Proofread licenses for contrib/tools/bison

And mark `GPL-3.0-or-later WITH Bison-exception-2.2` as it reads as follows:

```
As a special exception, you may create a larger work that contains
part or all of the Bison parser skeleton and distribute that work
under terms of your choice, so long as that work isn't itself a
parser generator using the skeleton or a modified version thereof
as a parser skeleton.
```

18 files changed, 32294 insertions, 2 deletions

diff --git a/contrib/tools/CMakeLists.txt b/contrib/tools/CMakeLists.txt
index c9f6133228..c47b2d5bde 100644
--- a/contrib/tools/CMakeLists.txt
+++ b/contrib/tools/CMakeLists.txt
@@ -6,5 +6,6 @@
 # original buildsystem will not be accepted.
 
 
+add_subdirectory(bison)
 add_subdirectory(flatc)
 add_subdirectory(protoc)
diff --git a/contrib/tools/bison/CMakeLists.txt b/contrib/tools/bison/CMakeLists.txt
new file mode 100644
index 0000000000..0bc73a6388
--- /dev/null
+++ b/contrib/tools/bison/CMakeLists.txt
@@ -0,0 +1,9 @@
+
+# This file was generated by the build system used internally in the Yandex monorepo.
+# Only simple modifications are allowed (adding source-files to targets, adding simple properties
+# like target_include_directories). These modifications will be ported to original
+# ya.make files by maintainers. Any complex modifications which can't be ported back to the
+# original buildsystem will not be accepted.
+
+
+add_subdirectory(bison)
diff --git a/contrib/tools/bison/bison/AUTHORS b/contrib/tools/bison/bison/AUTHORS
new file mode 100644
index 0000000000..fa4b1715a5
--- /dev/null
+++ b/contrib/tools/bison/bison/AUTHORS
@@ -0,0 +1,42 @@
+Authors of GNU Bison.
+
+Bison was written primarily by Robert Corbett.
+
+Richard Stallman made it Yacc-compatible.
+
+Wilfred Hansen of Carnegie Mellon University added multicharacter
+string literals and other features (Bison 1.25, 1995).
+
+Akim Demaille rewrote the parser in Bison, and changed the back end to
+use M4 (1.50, 2002).
+
+Paul Hilfinger added GLR support (Bison 1.50, 2002).
+
+Joel E. Denny contributed canonical-LR support, and invented and added
+IELR and LAC (Lookahead Correction) support (Bison 2.5, 2011).
+
+Paolo Bonzini contributed Java support (Bison 2.4, 2008).
+
+Alex Rozenman added named reference support (Bison 2.5, 2011).
+
+Paul Eggert fixed a million portability issues, arbitrary limitations,
+and nasty bugs.
+
+-----
+
+Copyright (C) 1998-2013 Free Software Foundation, Inc.
+
+This file is part of Bison, the GNU Compiler Compiler.
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
diff --git a/contrib/tools/bison/bison/CMakeLists.txt b/contrib/tools/bison/bison/CMakeLists.txt
new file mode 100644
index 0000000000..79bb19b008
--- /dev/null
+++ b/contrib/tools/bison/bison/CMakeLists.txt
@@ -0,0 +1,9 @@
+
+# This file was generated by the build system used internally in the Yandex monorepo.
+# Only simple modifications are allowed (adding source-files to targets, adding simple properties
+# like target_include_directories). These modifications will be ported to original
+# ya.make files by maintainers. Any complex modifications which can't be ported back to the
+# original buildsystem will not be accepted.
+
+
+add_subdirectory(induced)
diff --git a/contrib/tools/bison/bison/COPYING b/contrib/tools/bison/bison/COPYING
new file mode 100644
index 0000000000..94a9ed024d
--- /dev/null
+++ b/contrib/tools/bison/bison/COPYING
@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.  We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors.  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
+
+  To protect your rights, we need to prevent others from denying you
+these rights or asking you to surrender the rights.  Therefore, you have
+certain responsibilities if you distribute copies of the software, or if
+you modify it: responsibilities to respect the freedom of others.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must pass on to the recipients the same
+freedoms that you received.  You must make sure that they, too, receive
+or can get the source code.  And you must show them these terms so they
+know their rights.
+
+  Developers that use the GNU GPL protect your rights with two steps:
+(1) assert copyright on the software, and (2) offer you this License
+giving you legal permission to copy, distribute and/or modify it.
+
+  For the developers' and authors' protection, the GPL clearly explains
+that there is no warranty for this free software.  For both users' and
+authors' sake, the GPL requires that modified versions be marked as
+changed, so that their problems will not be attributed erroneously to
+authors of previous versions.
+
+  Some devices are designed to deny users access to install or run
+modified versions of the software inside them, although the manufacturer
+can do so.  This is fundamentally incompatible with the aim of
+protecting users' freedom to change the software.  The systematic
+pattern of such abuse occurs in the area of products for individuals to
+use, which is precisely where it is most unacceptable.  Therefore, we
+have designed this version of the GPL to prohibit the practice for those
+products.  If such problems arise substantially in other domains, we
+stand ready to extend this provision to those domains in future versions
+of the GPL, as needed to protect the freedom of users.
+
+  Finally, every program is threatened constantly by software patents.
+States should not allow patents to restrict development and use of
+software on general-purpose computers, but in those that do, we wish to
+avoid the special danger that patents applied to a free program could
+make it effectively proprietary.  To prevent this, the GPL assures that
+patents cannot be used to render the program non-free.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                       TERMS AND CONDITIONS
+
+  0. Definitions.
+
+  "This License" refers to version 3 of the GNU General Public License.
+
+  "Copyright" also means copyright-like laws that apply to other kinds of
+works, such as semiconductor masks.
+
+  "The Program" refers to any copyrightable work licensed under this
+License.  Each licensee is addressed as "you".  "Licensees" and
+"recipients" may be individuals or organizations.
+
+  To "modify" a work means to copy from or adapt all or part of the work
+in a fashion requiring copyright permission, other than the making of an
+exact copy.  The resulting work is called a "modified version" of the
+earlier work or a work "based on" the earlier work.
+
+  A "covered work" means either the unmodified Program or a work based
+on the Program.
+
+  To "propagate" a work means to do anything with it that, without
+permission, would make you directly or secondarily liable for
+infringement under applicable copyright law, except executing it on a
+computer or modifying a private copy.  Propagation includes copying,
+distribution (with or without modification), making available to the
+public, and in some countries other activities as well.
+
+  To "convey" a work means any kind of propagation that enables other
+parties to make or receive copies.  Mere interaction with a user through
+a computer network, with no transfer of a copy, is not conveying.
+
+  An interactive user interface displays "Appropriate Legal Notices"
+to the extent that it includes a convenient and prominently visible
+feature that (1) displays an appropriate copyright notice, and (2)
+tells the user that there is no warranty for the work (except to the
+extent that warranties are provided), that licensees may convey the
+work under this License, and how to view a copy of this License.  If
+the interface presents a list of user commands or options, such as a
+menu, a prominent item in the list meets this criterion.
+
+  1. Source Code.
+
+  The "source code" for a work means the preferred form of the work
+for making modifications to it.  "Object code" means any non-source
+form of a work.
+
+  A "Standard Interface" means an interface that either is an official
+standard defined by a recognized standards body, or, in the case of
+interfaces specified for a particular programming language, one that
+is widely used among developers working in that language.
+
+  The "System Libraries" of an executable work include anything, other
+than the work as a whole, that (a) is included in the normal form of
+packaging a Major Component, but which is not part of that Major
+Component, and (b) serves only to enable use of the work with that
+Major Component, or to implement a Standard Interface for which an
+implementation is available to the public in source code form.  A
+"Major Component", in this context, means a major essential component
+(kernel, window system, and so on) of the specific operating system
+(if any) on which the executable work runs, or a compiler used to
+produce the work, or an object code interpreter used to run it.
+
+  The "Corresponding Source" for a work in object code form means all
+the source code needed to generate, install, and (for an executable
+work) run the object code and to modify the work, including scripts to
+control those activities.  However, it does not include the work's
+System Libraries, or general-purpose tools or generally available free
+programs which are used unmodified in performing those activities but
+which are not part of the work.  For example, Corresponding Source
+includes interface definition files associated with source files for
+the work, and the source code for shared libraries and dynamically
+linked subprograms that the work is specifically designed to require,
+such as by intimate data communication or control flow between those
+subprograms and other parts of the work.
+
+  The Corresponding Source need not include anything that users
+can regenerate automatically from other parts of the Corresponding
+Source.
+
+  The Corresponding Source for a work in source code form is that
+same work.
+
+  2. Basic Permissions.
+
+  All rights granted under this License are granted for the term of
+copyright on the Program, and are irrevocable provided the stated
+conditions are met.  This License explicitly affirms your unlimited
+permission to run the unmodified Program.  The output from running a
+covered work is covered by this License only if the output, given its
+content, constitutes a covered work.  This License acknowledges your
+rights of fair use or other equivalent, as provided by copyright law.
+
+  You may make, run and propagate covered works that you do not
+convey, without conditions so long as your license otherwise remains
+in force.  You may convey covered works to others for the sole purpose
+of having them make modifications exclusively for you, or provide you
+with facilities for running those works, provided that you comply with
+the terms of this License in conveying all material for which you do
+not control copyright.  Those thus making or running the covered works
+for you must do so exclusively on your behalf, under your direction
+and control, on terms that prohibit them from making any copies of
+your copyrighted material outside their relationship with you.
+
+  Conveying under any other circumstances is permitted solely under
+the conditions stated below.  Sublicensing is not allowed; section 10
+makes it unnecessary.
+
+  3. Protecting Users' Legal Rights From Anti-Circumvention Law.
+
+  No covered work shall be deemed part of an effective technological
+measure under any applicable law fulfilling obligations under article
+11 of the WIPO copyright treaty adopted on 20 December 1996, or
+similar laws prohibiting or restricting circumvention of such
+measures.
+
+  When you convey a covered work, you waive any legal power to forbid
+circumvention of technological measures to the extent such circumvention
+is effected by exercising rights under this License with respect to
+the covered work, and you disclaim any intention to limit operation or
+modification of the work as a means of enforcing, against the work's
+users, your or third parties' legal rights to forbid circumvention of
+technological measures.
+
+  4. Conveying Verbatim Copies.
+
+  You may convey verbatim copies of the Program's source code as you
+receive it, in any medium, provided that you conspicuously and
+appropriately publish on each copy an appropriate copyright notice;
+keep intact all notices stating that this License and any
+non-permissive terms added in accord with section 7 apply to the code;
+keep intact all notices of the absence of any warranty; and give all
+recipients a copy of this License along with the Program.
+
+  You may charge any price or no price for each copy that you convey,
+and you may offer support or warranty protection for a fee.
+
+  5. Conveying Modified Source Versions.
+
+  You may convey a work based on the Program, or the modifications to
+produce it from the Program, in the form of source code under the
+terms of section 4, provided that you also meet all of these conditions:
+
+    a) The work must carry prominent notices stating that you modified
+    it, and giving a relevant date.
+
+    b) The work must carry prominent notices stating that it is
+    released under this License and any conditions added under section
+    7.  This requirement modifies the requirement in section 4 to
+    "keep intact all notices".
+
+    c) You must license the entire work, as a whole, under this
+    License to anyone who comes into possession of a copy.  This
+    License will therefore apply, along with any applicable section 7
+    additional terms, to the whole of the work, and all its parts,
+    regardless of how they are packaged.  This License gives no
+    permission to license the work in any other way, but it does not
+    invalidate such permission if you have separately received it.
+
+    d) If the work has interactive user interfaces, each must display
+    Appropriate Legal Notices; however, if the Program has interactive
+    interfaces that do not display Appropriate Legal Notices, your
+    work need not make them do so.
+
+  A compilation of a covered work with other separate and independent
+works, which are not by their nature extensions of the covered work,
+and which are not combined with it such as to form a larger program,
+in or on a volume of a storage or distribution medium, is called an
+"aggregate" if the compilation and its resulting copyright are not
+used to limit the access or legal rights of the compilation's users
+beyond what the individual works permit.  Inclusion of a covered work
+in an aggregate does not cause this License to apply to the other
+parts of the aggregate.
+
+  6. Conveying Non-Source Forms.
+
+  You may convey a covered work in object code form under the terms
+of sections 4 and 5, provided that you also convey the
+machine-readable Corresponding Source under the terms of this License,
+in one of these ways:
+
+    a) Convey the object code in, or embodied in, a physical product
+    (including a physical distribution medium), accompanied by the
+    Corresponding Source fixed on a durable physical medium
+    customarily used for software interchange.
+
+    b) Convey the object code in, or embodied in, a physical product
+    (including a physical distribution medium), accompanied by a
+    written offer, valid for at least three years and valid for as
+    long as you offer spare parts or customer support for that product
+    model, to give anyone who possesses the object code either (1) a
+    copy of the Corresponding Source for all the software in the
+    product that is covered by this License, on a durable physical
+    medium customarily used for software interchange, for a price no
+    more than your reasonable cost of physically performing this
+    conveying of source, or (2) access to copy the
+    Corresponding Source from a network server at no charge.
+
+    c) Convey individual copies of the object code with a copy of the
+    written offer to provide the Corresponding Source.  This
+    alternative is allowed only occasionally and noncommercially, and
+    only if you received the object code with such an offer, in accord
+    with subsection 6b.
+
+    d) Convey the object code by offering access from a designated
+    place (gratis or for a charge), and offer equivalent access to the
+    Corresponding Source in the same way through the same place at no
+    further charge.  You need not require recipients to copy the
+    Corresponding Source along with the object code.  If the place to
+    copy the object code is a network server, the Corresponding Source
+    may be on a different server (operated by you or a third party)
+    that supports equivalent copying facilities, provided you maintain
+    clear directions next to the object code saying where to find the
+    Corresponding Source.  Regardless of what server hosts the
+    Corresponding Source, you remain obligated to ensure that it is
+    available for as long as needed to satisfy these requirements.
+
+    e) Convey the object code using peer-to-peer transmission, provided
+    you inform other peers where the object code and Corresponding
+    Source of the work are being offered to the general public at no
+    charge under subsection 6d.
+
+  A separable portion of the object code, whose source code is excluded
+from the Corresponding Source as a System Library, need not be
+included in conveying the object code work.
+
+  A "User Product" is either (1) a "consumer product", which means any
+tangible personal property which is normally used for personal, family,
+or household purposes, or (2) anything designed or sold for incorporation
+into a dwelling.  In determining whether a product is a consumer product,
+doubtful cases shall be resolved in favor of coverage.  For a particular
+product received by a particular user, "normally used" refers to a
+typical or common use of that class of product, regardless of the status
+of the particular user or of the way in which the particular user
+actually uses, or expects or is expected to use, the product.  A product
+is a consumer product regardless of whether the product has substantial
+commercial, industrial or non-consumer uses, unless such uses represent
+the only significant mode of use of the product.
+
+  "Installation Information" for a User Product means any methods,
+procedures, authorization keys, or other information required to install
+and execute modified versions of a covered work in that User Product from
+a modified version of its Corresponding Source.  The information must
+suffice to ensure that the continued functioning of the modified object
+code is in no case prevented or interfered with solely because
+modification has been made.
+
+  If you convey an object code work under this section in, or with, or
+specifically for use in, a User Product, and the conveying occurs as
+part of a transaction in which the right of possession and use of the
+User Product is transferred to the recipient in perpetuity or for a
+fixed term (regardless of how the transaction is characterized), the
+Corresponding Source conveyed under this section must be accompanied
+by the Installation Information.  But this requirement does not apply
+if neither you nor any third party retains the ability to install
+modified object code on the User Product (for example, the work has
+been installed in ROM).
+
+  The requirement to provide Installation Information does not include a
+requirement to continue to provide support service, warranty, or updates
+for a work that has been modified or installed by the recipient, or for
+the User Product in which it has been modified or installed.  Access to a
+network may be denied when the modification itself materially and
+adversely affects the operation of the network or violates the rules and
+protocols for communication across the network.
+
+  Corresponding Source conveyed, and Installation Information provided,
+in accord with this section must be in a format that is publicly
+documented (and with an implementation available to the public in
+source code form), and must require no special password or key for
+unpacking, reading or copying.
+
+  7. Additional Terms.
+
+  "Additional permissions" are terms that supplement the terms of this
+License by making exceptions from one or more of its conditions.
+Additional permissions that are applicable to the entire Program shall
+be treated as though they were included in this License, to the extent
+that they are valid under applicable law.  If additional permissions
+apply only to part of the Program, that part may be used separately
+under those permissions, but the entire Program remains governed by
+this License without regard to the additional permissions.
+
+  When you convey a copy of a covered work, you may at your option
+remove any additional permissions from that copy, or from any part of
+it.  (Additional permissions may be written to require their own
+removal in certain cases when you modify the work.)  You may place
+additional permissions on material, added by you to a covered work,
+for which you have or can give appropriate copyright permission.
+
+  Notwithstanding any other provision of this License, for material you
+add to a covered work, you may (if authorized by the copyright holders of
+that material) supplement the terms of this License with terms:
+
+    a) Disclaiming warranty or limiting liability differently from the
+    terms of sections 15 and 16 of this License; or
+
+    b) Requiring preservation of specified reasonable legal notices or
+    author attributions in that material or in the Appropriate Legal
+    Notices displayed by works containing it; or
+
+    c) Prohibiting misrepresentation of the origin of that material, or
+    requiring that modified versions of such material be marked in
+    reasonable ways as different from the original version; or
+
+    d) Limiting the use for publicity purposes of names of licensors or
+    authors of the material; or
+
+    e) Declining to grant rights under trademark law for use of some
+    trade names, trademarks, or service marks; or
+
+    f) Requiring indemnification of licensors and authors of that
+    material by anyone who conveys the material (or modified versions of
+    it) with contractual assumptions of liability to the recipient, for
+    any liability that these contractual assumptions directly impose on
+    those licensors and authors.
+
+  All other non-permissive additional terms are considered "further
+restrictions" within the meaning of section 10.  If the Program as you
+received it, or any part of it, contains a notice stating that it is
+governed by this License along with a term that is a further
+restriction, you may remove that term.  If a license document contains
+a further restriction but permits relicensing or conveying under this
+License, you may add to a covered work material governed by the terms
+of that license document, provided that the further restriction does
+not survive such relicensing or conveying.
+
+  If you add terms to a covered work in accord with this section, you
+must place, in the relevant source files, a statement of the
+additional terms that apply to those files, or a notice indicating
+where to find the applicable terms.
+
+  Additional terms, permissive or non-permissive, may be stated in the
+form of a separately written license, or stated as exceptions;
+the above requirements apply either way.
+
+  8. Termination.
+
+  You may not propagate or modify a covered work except as expressly
+provided under this License.  Any attempt otherwise to propagate or
+modify it is void, and will automatically terminate your rights under
+this License (including any patent licenses granted under the third
+paragraph of section 11).
+
+  However, if you cease all violation of this License, then your
+license from a particular copyright holder is reinstated (a)
+provisionally, unless and until the copyright holder explicitly and
+finally terminates your license, and (b) permanently, if the copyright
+holder fails to notify you of the violation by some reasonable means
+prior to 60 days after the cessation.
+
+  Moreover, your license from a particular copyright holder is
+reinstated permanently if the copyright holder notifies you of the
+violation by some reasonable means, this is the first time you have
+received notice of violation of this License (for any work) from that
+copyright holder, and you cure the violation prior to 30 days after
+your receipt of the notice.
+
+  Termination of your rights under this section does not terminate the
+licenses of parties who have received copies or rights from you under
+this License.  If your rights have been terminated and not permanently
+reinstated, you do not qualify to receive new licenses for the same
+material under section 10.
+
+  9. Acceptance Not Required for Having Copies.
+
+  You are not required to accept this License in order to receive or
+run a copy of the Program.  Ancillary propagation of a covered work
+occurring solely as a consequence of using peer-to-peer transmission
+to receive a copy likewise does not require acceptance.  However,
+nothing other than this License grants you permission to propagate or
+modify any covered work.  These actions infringe copyright if you do
+not accept this License.  Therefore, by modifying or propagating a
+covered work, you indicate your acceptance of this License to do so.
+
+  10. Automatic Licensing of Downstream Recipients.
+
+  Each time you convey a covered work, the recipient automatically
+receives a license from the original licensors, to run, modify and
+propagate that work, subject to this License.  You are not responsible
+for enforcing compliance by third parties with this License.
+
+  An "entity transaction" is a transaction transferring control of an
+organization, or substantially all assets of one, or subdividing an
+organization, or merging organizations.  If propagation of a covered
+work results from an entity transaction, each party to that
+transaction who receives a copy of the work also receives whatever
+licenses to the work the party's predecessor in interest had or could
+give under the previous paragraph, plus a right to possession of the
+Corresponding Source of the work from the predecessor in interest, if
+the predecessor has it or can get it with reasonable efforts.
+
+  You may not impose any further restrictions on the exercise of the
+rights granted or affirmed under this License.  For example, you may
+not impose a license fee, royalty, or other charge for exercise of
+rights granted under this License, and you may not initiate litigation
+(including a cross-claim or counterclaim in a lawsuit) alleging that
+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
+
+  11. Patents.
+
+  A "contributor" is a copyright holder who authorizes use under this
+License of the Program or a work on which the Program is based.  The
+work thus licensed is called the contributor's "contributor version".
+
+  A contributor's "essential patent claims" are all patent claims
+owned or controlled by the contributor, whether already acquired or
+hereafter acquired, that would be infringed by some manner, permitted
+by this License, of making, using, or selling its contributor version,
+but do not include claims that would be infringed only as a
+consequence of further modification of the contributor version.  For
+purposes of this definition, "control" includes the right to grant
+patent sublicenses in a manner consistent with the requirements of
+this License.
+
+  Each contributor grants you a non-exclusive, worldwide, royalty-free
+patent license under the contributor's essential patent claims, to
+make, use, sell, offer for sale, import and otherwise run, modify and
+propagate the contents of its contributor version.
+
+  In the following three paragraphs, a "patent license" is any express
+agreement or commitment, however denominated, not to enforce a patent
+(such as an express permission to practice a patent or covenant not to
+sue for patent infringement).  To "grant" such a patent license to a
+party means to make such an agreement or commitment not to enforce a
+patent against the party.
+
+  If you convey a covered work, knowingly relying on a patent license,
+and the Corresponding Source of the work is not available for anyone
+to copy, free of charge and under the terms of this License, through a
+publicly available network server or other readily accessible means,
+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients.  "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+  If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
+patent license (a) in connection with copies of the covered work
+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Use with the GNU Affero General Public License.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
diff --git a/contrib/tools/bison/bison/ChangeLog-1998 b/contrib/tools/bison/bison/ChangeLog-1998
new file mode 100644
index 0000000000..f34e2a3734
--- /dev/null
+++ b/contrib/tools/bison/bison/ChangeLog-1998
@@ -0,0 +1,1500 @@
+1998-01-04  J.J. van der Heijden  <J.J.vanderHeijden@student.utwente.nl>
+
+	* src/files.c (openfiles) [_WIN32 && !__CYGWIN32__]: Use TEMP or
+	Temp to find a temporary directory, if possible.  Do not unlink
+	files while they are open.
+
+1997-08-25  Richard Stallman  <rms@psilocin.gnu.ai.mit.edu>
+
+	* src/reader.c (stack_offset;): Change some warni to warns.
+
+	* src/lex.c (literalchar): Use warns, not warni.
+
+1997-06-28  Richard Stallman  <rms@psilocin.gnu.ai.mit.edu>
+
+	* src/bison.simple: Add a Bison version comment.
+
+	* Makefile.in (bison_version): New variable.
+	(dist): Use that variable.
+	(bison.s1): Substitute the Bison version into bison.simple.
+
+	* src/main.c (fatal, warn, berror): Use program_name.
+
+1997-06-18  Richard Stallman  <rms@psilocin.gnu.ai.mit.edu>
+
+	* Makefile.in: new.h renamed to alloc.h.
+	* src/*.c: src/new.h renamed to src/alloc.h.
+
+	* src/alloc.h: Renamed from src/new.h.
+
+1997-06-15  Richard Stallman  <rms@psilocin.gnu.ai.mit.edu>
+
+	* src/main.c (fatal, warn, berror): Make error messages standard.
+	(toomany): Improve error message text.
+
+1997-05-24  Richard Stallman  <rms@psilocin.gnu.ai.mit.edu>
+
+	* src/lex.c (literalchar): Fix the code for escaping \, " and '.
+
+1997-05-23  Richard Stallman  <rms@psilocin.gnu.ai.mit.edu>
+
+	* src/lex.c (lex): Avoid trouble when there are many chars
+	to discard in a char literal with just several chars in it.
+
+1997-05-17  Richard Stallman  <rms@psilocin.gnu.ai.mit.edu>
+
+	* src/bison.simple: Use malloc, if using alloca is troublesome.
+	(YYSTACK_USE_ALLOCA): New flag macro.
+	Define it for some systems and compilers.
+	(YYSTACK_ALLOC): New macro.
+	(yyparse): Use YYSTACK_ALLOC to allocate stack.
+	If it was malloc'd, free it.
+
+1997-05-02  Richard Stallman  <rms@psilocin.gnu.ai.mit.edu>
+
+	* src/bison.simple [_AIX]: Don't include malloc.h.
+
+1997-04-23  Richard Stallman  <rms@psilocin.gnu.ai.mit.edu>
+
+	* src/bison.simple (alloca) [__hpux]: Always define as
+	__builtin_alloca.
+
+1997-04-22  Richard Stallman  <rms@psilocin.gnu.ai.mit.edu>
+
+	* src/bison.simple (__yy_memcpy): Declare arg `count' as unsigned
+	int.
+	(yyparse): Cast third arg to __yy_memcpy to unsigned int.
+
+	* src/bison.simple (alloca) [__hpux]: Include alloca.h (right for
+	HPUX 10) instead of declaring alloca (right for HPUX 9).
+
+1997-01-02  Richard Stallman  <rms@ethanol.gnu.ai.mit.edu>
+
+	* src/allocate.c [__STDC__ or _MSC_VER]:
+	Declare calloc and realloc to return void *.
+
+	* Makefile.in (dist): Explicitly check for symlinks, and copy them.
+
+1996-12-17  Paul Eggert  <eggert@twinsun.com>
+
+	* src/bison.simple (yyparse): If __GNUC__ and YYPARSE_PARAM are
+	both defined, declare yyparse to have a void * argument.
+
+1996-12-17  Richard Stallman  <rms@psilocin.gnu.ai.mit.edu>
+
+	* src/system.h [_MSC_VER]: Include stdlib.h and process.h.
+	[_MSC_VER] (getpid): Define as macro--translate it to _getpid.
+
+	* src/reduce.c (nbits): Add some casts.
+
+	* src/main.c (main): Return FAILURE as a value.
+	(printable_version): Declare arg as int, not char.
+
+	* src/files.c [_MSC_VER] (XPFILE, XPFILE1): Define, if not already
+	defined.
+
+1996-12-16  Richard Stallman  <rms@psilocin.gnu.ai.mit.edu>
+
+	* src/main.c (printable_version): Use type `int' for the arg.
+
+1996-08-12  Richard Stallman  <rms@psilocin.gnu.ai.mit.edu>
+
+	* src/bison.simple: Test _MSDOS as well as _MSDOS_.
+
+1996-07-31  Richard Stallman  <rms@psilocin.gnu.ai.mit.edu>
+
+	* src/bison.simple [__sun && __i386]: Include alloca.h.
+
+1996-07-30  Richard Stallman  <rms@psilocin.gnu.ai.mit.edu>
+
+	* src/bison.simple: Test _MSDOS_, not MSDOS.
+
+1996-06-01  Richard Stallman  <rms@psilocin.gnu.ai.mit.edu>
+
+	* All files: Insert `_' macro around many string constants.
+
+	* src/system.h [HAVE_LOCALE_H]: Include locale.h.
+	[! HAVE_LOCALE_H] (setlocale): Define as no-op.
+	[ENABLE_NLS]: Include libintl.h.
+	[ENABLE_NLS] (gettext): Define.
+	[! ENABLE_NLS] (bintextdomain, textdomain, _): Consolation definitions.
+	(N_, PACKAGE, LOCALEDIR): New macros.
+
+	* src/main.c (main): Call setlocale, bindtextdomain and textdomain.
+
+	* POTFILES.in: New file.
+
+	* Makefile.in (allocate.o): Define target explicitly.
+
+1996-06-01  Jim Meyering  <meyering@na-net.ornl.gov>
+
+	* Makefile.in (CFLAGS): Set to @CFLAGS@.
+	(LDFLAGS): Set to @LDFLAGS@.
+	(configure): Run autoconf only if preceding `cd' succeeds.
+	(src/bison.s1): Redirect output to temporary file then move the
+	temporary to the target, rather than redirecting directly to
+	src/bison.s1.
+	(clean): Remove config.status and config.log.
+	(distclean): Don't remove config.status here.
+
+1996-05-12  Jim Meyering  <meyering@na-net.ornl.gov>
+
+	* src/bison.simple (__yy_memcpy) [__cplusplus]: Reorder declarations
+	of variables f and t.
+
+1996-05-11  Richard Stallman  <rms@delasyd.gnu.ai.mit.edu>
+
+	* Version 1.25 released.
+
+	* Makefile.in (dist): Don't use $(srcdir).
+
+	* src/bison.simple (__yy_memcpy): Really reorder the args, as was
+	supposedly done on Feb 14 1995.
+	(yyparse): Calls changed accordingly.
+
+1996-01-24  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/output.c (output_rule_data): Test YYERROR_VERBOSE in the
+	conditional around the definition of ttyname.
+
+1995-12-28  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/bison.simple: Fix line numbers in #line commands.
+
+1995-12-24  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/bison.simple (YYPARSE_PARAM_DECL): In C++, make it always
+	null.
+	(YYPARSE_PARAM_ARG): New macro.
+	(yyparse): Use YYPARSE_PARAM_ARG.
+
+1995-10-15  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/version.c: Version now 1.25.
+
+	* src/main.c (warn): Set `failure'.
+
+1995-08-01   Wilfred J. Hansen  <wjh+@cmu.edu>
+
+	* src/bison.cld, src/getargs.c, src/vmsgetargs.c: Added -n, -k,
+	and -raw switches.
+	(noparserflag, toknumflag, rawtoknumflag): New variables.
+
+	* src/conflicts.c (resolve_sr_conflict): Remove use of alloca.
+
+	* src/files.c (openfiles, open_extra_files, done):  Add faction flag
+	and actfile file.  Handle noparserflag.  Both for -n switch.
+
+	* src/lex.c: Include getopt.h.  Add some extern decls.
+	(safegetc): New function to deal with EOF gracefully.
+	(literalchar); new function to deal with reading \ escapes.
+	(lex): Use literalchar.
+	(lex): Implemented "..." tokens.
+	(literalchar, lex, parse_percent_token): Made tokenbuffer
+	always contain the token.  This includes growing the token
+	buffer while reading an integer.
+	(parse_percent_token): Replaced if-else statement with percent_table.
+	(parse_percent_token): Added % declarations as another
+	way to specify the flags -n, -l, and -r.  Also added hooks for
+	-d, -k, -y, -v, -t, -p, -b, -o, but implementation requires
+	major changes to src/files.c.
+	(lex) Retain in the incoming stream a character following
+	an incorrect '/'.
+	(skip_white_space, lex):  Revised most error messages
+	and changed fatal to warn to avoid aborting.
+	(percent_table):  Added %thong declarations.
+
+	* src/lex.h: Added THONG and NOOP for alias processing.
+	Added SETOPT for the new code that allows setting options with %flags.
+
+	* src/main.c (main): If reader sees an error, don't process the
+	grammar.
+	(fatals): Updated to not use VARARGS1.
+	(printable_version, int_to_string, warn, warni, warns, warnss)
+	(warnsss): New error reporting functions.  Avoid abort for error.
+
+	* src/output.c (output_headers, output_trailers, output, output_gram)
+	(output_rule_data): Implement noparserflag variable.
+	Implement toknumflag variable.
+	(output): Call reader_output_yylsp to output LTYPESTR.
+
+	* src/reader.c (reader_output_yylsp): New function.
+	(readgram): Use `#if 0' around code that accepted %command inside
+	grammar rules: The documentation doesn't allow it, and it will
+	fail since the %command processors scan for the next %.
+	(parse_token_decl): Extended the %token declaration to allow a
+	multi-character symbol as an alias.
+	(parse_thong_decl): New function.
+	(read_declarations): Added %thong declarations.
+	(read_declarations): Handle NOOP to deal with allowing %
+	declarations as another means to specify the flags.
+	(readgram): Allow %prec prior to semantics embedded in a rule.
+	(skip_to_char, read_declarations, copy_definition)
+	(parse_token_decl, parse_start_decl, parse_type_decl)
+	(parse_assoc_decl, parse_union_decl, parse_expect_decl)
+	(get_type_name, copy_guard, copy_action, readgram)
+	(get_type, packsymbols): Revised most error messages.  Changed
+	`fatal' to `warnxxx' to avoid aborting for error.  Revised and use
+	multiple warnxxx functions to avoid using VARARGS1.
+	(read_declarations): Improve the error message for an invalid
+	character.  Do not abort.
+	(read_declarations, copy_guard, copy_action): Use
+	printable_version to avoid unprintable characters in printed
+	output.
+	(parse_expect_decl): Error if argument to %expect exceeds 10
+	digits.
+	(parse_token_decl, parse_assoc_decl, parse_type_decl, get_type):
+	Allow the type of a non-terminal can be given more than once, as
+	long as all specifications give the same type.
+
+	* src/reduce.c (reduce_grammar): Revise an error message.
+	(print_notices): Remove final `.' from error message.
+
+	* src/symtab.h (SALIAS): New #define for adding aliases to %token.
+	(struct bucket): Added `alias' field.
+
+1995-05-03  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/bison.simple: Change distribution terms.
+
+	* src/version.c: Version now 1.23.  No, 1.24.
+
+1995-02-23  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/files.c: Test __VMS_POSIX as well as VMS.
+
+1995-02-14  Jim Meyering <meyering@comco.com>
+
+	* src/bison.simple (__yy_memcpy): Renamed from __yy_bcopy to avoid
+	confusion.  Reverse FROM and TO arguments to be consistent with
+	those of memcpy.
+
+1994-11-10  David J. MacKenzie  <djm@duality.gnu.ai.mit.edu>
+
+	* Makefile.in (DISTFILES): Include install-sh, not install.sh.
+	Include NEWS.
+
+	* configure.in: Update to Autoconf v2 macro names.
+
+1994-10-04  David J. MacKenzie  <djm@duality.gnu.ai.mit.edu>
+
+	* Makefile.in (prefix, exec_prefix): Let configure set them.
+
+1994-09-28  David J. MacKenzie  <djm@duality.gnu.ai.mit.edu>
+
+	* Makefile.in: Set datadir to $(prefix)/share.
+
+1994-07-12  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/reader.c (reader): Rename undefined-token token to
+	`$undefined.'.
+
+1994-05-05  David J. MacKenzie  <djm@nutrimat.gnu.ai.mit.edu>
+
+	* Makefile.in (DISTFILES): Add install.sh.
+	(install): Remove chmod commands.
+
+1994-03-26  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/bison.simple: Fix #line commands.
+
+1994-03-24  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/conflicts.c (print_reductions): Increment both fp1 and fp2
+	while printing reductions in multi-rule case.
+
+1994-01-02  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* Makefile.in (LDFLAGS): Make it empty by default.
+	(bison): Use CFLAGS.
+
+1993-11-21  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/bison.simple (YYLEX): Take notice of YYLEX_PARAM.
+
+1993-10-18  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/bison.simple (YYPARSE_PARAM_DECL): Always define this.
+
+1993-10-14  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/bison.simple (yyparse): Support YYPARSE_PARAM.
+
+1993-09-13  Noah Friedman  <friedman@nutrimat.gnu.ai.mit.edu>
+
+	* Makefile.in (check): New target.
+
+1993-09-10  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/conflicts.c (alloca): #undef before defining.
+
+	* src/system.h (bcopy): Don't define if already defined.
+
+1993-09-06  Noah Friedman  <friedman@nutrimat.gnu.ai.mit.edu>
+
+	* Version 1.22 released.
+
+	* mkinstalldirs: New file.
+
+	* Makefile.in (dist): Use .gz for extension, not .z.
+	(DISTFILES): New variable.
+	(dist): Use it instead of explicit file list.
+	Try to link each file separately, then copy file if ln fails.
+	(installdirs): Use mkinstalldirs script.
+
+1993-07-29  David J. MacKenzie  <djm@wookumz.gnu.ai.mit.edu>
+
+	* Makefile.in (config.status): Run config.status --recheck, not
+	configure, to get the right args passed.
+
+1993-07-24  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/bison.simple (yyparse): Init yychar1 to avoid warning.
+
+1993-07-04  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/bison.simple (yyparse): Don't set yyval when yylen is 0.
+
+1993-06-26  David J. MacKenzie  <djm@wookumz.gnu.ai.mit.edu>
+
+	* src/getargs.c (getargs): Exit after printing the version number.
+	Add --help and -h options.
+	(usage): New function.
+
+1993-06-25  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/getargs.c (longopts): Allow `output' as an alternative.
+
+1993-06-16  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/bison.simple (yyparse): Conditionalize the entire call to
+	yyoverflow, not just two arguments in it.
+
+1993-06-03  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/bison.simple [__hpux] (alloca): Don't specify arg types.
+
+1993-05-07  Noah Friedman  <friedman@nutrimat.gnu.ai.mit.edu>
+
+	* Makefile.in (install): Depend on `uninstall' and `installdirs'.
+	(installdirs): New target.
+
+1993-04-28  Noah Friedman  <friedman@nutrimat.gnu.ai.mit.edu>
+
+	* src/reader.c:  Remove declaration of atoi.
+
+1993-04-23  Noah Friedman  <friedman@nutrimat.gnu.ai.mit.edu>
+
+	* src/new.h [!__STDC__] (FREE): Check x != 0.
+	Make expr to call `free' evaluate to 0.
+
+1993-04-20  David J. MacKenzie  <djm@kropotkin.gnu.ai.mit.edu>
+
+	* src/files.c [MSDOS]: Use xmalloc, not malloc.
+	* src/allocate.c (xmalloc): Renamed from mallocate.  Remove old
+	wrapper.
+	* src/conflicts.c, src/symtab.c, src/files.c, src/LR0.c,
+	src/new.h: Change callers.
+	* src/allocate.c (xrealloc): New function.
+	* src/new.h: Declare it.
+	* src/lex.c, src/reader.c: Use it.
+
+1993-04-18  Noah Friedman  <friedman@nutrimat.gnu.ai.mit.edu>
+
+	* Version 1.21 released.
+
+	* src/reader.c : Don't declare `realloc'.
+
+	* Makefile.in (bison.s1): use `rm -f' since it's quieter.
+	(dist): make gzipped tar file.
+
+1993-04-16  Noah Friedman  <friedman@nutrimat.gnu.ai.mit.edu>
+
+	* Makefile.in (Makefile, config.status, configure): New targets.
+
+1993-04-15  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/main.c: Don't declare `abort'.
+
+	* src/files.c: Don't declare `exit'.
+
+1993-04-15  Noah Friedman  <friedman@nutrimat.gnu.ai.mit.edu>
+
+	* configure.in: Add AC_CONST.
+
+1993-04-14  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* Makefile.in (all): Depend on bison.s1.
+
+1993-04-13  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* Version 1.20 released.
+
+1993-03-24  Richard Stallman  <rms@wookumz.gnu.ai.mit.edu>
+
+	* src/output.c (output_headers): Rename yynerrs if -p.
+
+1993-03-18  Noah Friedman  <friedman@nutrimat.gnu.ai.mit.edu>
+
+	* src/system.h: Don't try to include stdlib.h unless HAVE_STDLIB_H
+	is defined.
+
+	* configure.in: Check for stdlib.h.
+
+1993-03-17  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/bison.simple [__hpux, not __GNUC__]: Declare alloca.
+	(yyparse): When printing the expected token types for an error,
+	Avoid negative indexes in yycheck and yytname.
+
+1993-03-13  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* Makefile.in (files.o, .c.o): Put CPPFLAGS and CFLAGS last.
+
+1993-03-01  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/bison.simple: Test __sgi like __sparc.
+
+1993-02-17  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/conflicts.c (resolve_sr_conflict): Add extra parens in
+	alloca call.
+
+	* src/bison.simple [__GNUC__] (yyparse): Declare with prototype.
+
+1993-01-15  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/conflicts.c (print_reduction): Near end, increment fp2 when
+	mask recycles.
+
+1993-01-13  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* Makefile.in (bison.s1): New target.  Modifies bison.simple.
+	(install): Install bison.s1, without changing it.
+	(clean): Delete bison.s1.
+
+1993-01-04  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/reader.c (reader): Put Bison version in comment in output
+	file.
+
+1992-12-22  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/files.c (openfiles): Use .output, not .out, for outfile,
+	regardless of spec_name_prefix.
+
+1992-12-15  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/output.c (output_gram): Include yyrhs in the same #if as
+	yyprhs.
+
+1992-12-15  Noah Friedman  <friedman@nutrimat.gnu.ai.mit.edu>
+
+	* src/output.c (output): output directives checking for
+	__cplusplus as well as __STDC__ to determine when to define
+	"const" as an empty token.  (Patch from Wolfgang Glunz
+	<wogl@sun11a.zfe.siemens.de>)
+
+1992-12-08  David J. MacKenzie  <djm@kropotkin.gnu.ai.mit.edu>
+
+	* src/system.h, src/conflicts.c: Replace USG with HAVE_STRING_H
+	and HAVE_MEMORY_H.
+
+1992-11-21  David J. MacKenzie  <djm@goldman.gnu.ai.mit.edu>
+
+	* Makefile.in: Set and use $(MAKEINFO).
+
+1992-11-20  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/files.c (done) [MSDOS]: Delete the tmpdefsfile with the
+	rest.
+
+1992-10-08  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* Makefile.in (dist): Put configure.bat in the distribution.
+
+1992-10-01  David J. MacKenzie  <djm@goldman.gnu.ai.mit.edu>
+
+	* Makefile.in (install): cd to $(srcdir) before installing info
+	files.
+
+1992-09-30  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* Makefile.in (files.o): Supply $(DEFS), and $(CPPFLAGS).
+
+1992-09-25  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* Version 1.19 released.
+
+	* src/reader.c (parse_union_decl): Fix ending of C++ comment;
+	don't lose the char after the newline.
+
+	* configure.bat: New file.
+
+1992-09-24  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/conflicts.c: Check for using alloca.h as getopt.c does.
+
+1992-09-06  Karl Berry  <karl@hayley>
+
+	* src/files.c (openfiles): open `fdefines' after we have assigned
+	a name to `tmpdefsfile', and only if `definesflag' is set.
+	(done): only create the real .tab.h file if `definesflag' is set.
+	* src/reader.c (packsymbols): don't close `fdefines' here.
+
+1992-09-05  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/files.c (openfiles): Open fdefines as temp file, like
+	ftable.
+	(done): Copy temp defines file to real one, like main output file.
+
+1992-08-21  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* Makefile.in (dist): Don't release mergedir.awk
+	(install): Use sed, not awk.  Don't depend on mergedir.awk.
+	* mergedir.awk: File effectively deleted.
+
+1992-07-29  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/bison.simple: Test __sparc along with __sparc__.
+
+1992-07-11  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/lex.c (skip_white_space): Count \n just once at end of c++
+	comment.
+
+1992-06-26  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/bison.simple: Comment fix; #line command updated.
+
+1992-06-24  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* Makefile.in (install): Specify full new file name for the
+	executable.
+
+1992-06-22  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* Makefile.in (dist): Include bison.rnh in distribution.
+
+Sun Jun 21 22:42:13 1992 Eric Youngdale <youngdale@v6550c.nrl.navy.mil>
+
+	Clean up rough edges in VMS port of bison, add support for
+	remaining command line options.
+
+	* src/bison.cld: Add /version, /yacc, /file_prefix, and
+	/name_prefix switches.
+
+	* src/build.com: General cleanup: add logic to automatically sense
+	which C compiler is present; add code to cwd to the directory that
+	contains bison sources; do not define XPFILE, XPFILE1
+	(correct defaults are applied in src/file.c).
+
+	* src/files.c: Append _tab, not .tab when using /file_prefix under
+	VMS.
+
+	* src/system.h: Include string.h instead of strings.h (a la USG).
+
+	* src/vmsgetargs.c: Add support for all switches added to
+	src/bison.cld.
+
+1992-06-21  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* Makefile.in (install): Always specify new file name for install.
+	Redirect awk output to temp file and install that.
+
+1992-05-27  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/bison.simple (yyparse): Make yybackup and yyerrlab1 always
+	be used.
+
+1992-05-22  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* Makefile.in (dist): Depend on bison.info
+	(bison.info): Delete spurious <.
+
+1992-05-17  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* Makefile.in (.c.o): New rule.  Use $(DEFS) directly.
+	(CFLAGS): Use just -g by default.
+	(CDEBUG): Variable deleted.
+
+1992-05-07  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/reader.c (copy_guard): Fix typo skipping comment.
+
+1992-05-04  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* Version 1.18.
+
+	* src/getargs.c (getargs): Change '0' to 0 in case for long
+	options.
+
+1992-04-19  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/reader.c (packsymbols): Handle -p when declaring yylval.
+
+1992-04-18  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/output.c (output_gram): Output #endif properly at end of
+	decl.
+
+1992-03-30  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* Version 1.17.
+
+	* Makefile.in (clean): Don't delete configuration files or TAGS.
+	(distclean): New target; do delete those.
+
+1992-03-28  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/output.c (output_gram): Conditionalize yyprhs on YYDEBUG.
+
+	* src/LR0.c (augment_automaton): If copying sp->shifts to insert
+	new shift, handle case of inserting at end.
+
+1992-03-21  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/lex.c (skip_white_space): Handle C++ comments.
+	* src/reader.c (copy_definition, parse_union_decl, copy_guard):
+	(copy_action): Likewise.
+
+1992-03-08  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/bison.simple (YYPOPSTACK): Fix typo.
+
+1992-02-29  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* Makefile.in (install): Install bison.info* files one by one.
+
+1992-02-28  David J. MacKenzie  <djm@wookumz.gnu.ai.mit.edu>
+
+	* src/bison.1: Document long options as starting with `--', not
+	`+'.
+
+1992-02-01  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/getargs.c (getargs): Accept value 0 from getopt_long.
+
+1992-01-30  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* Makefile.in (mostlyclean): Renamed from `clean'.
+	(clean): Renamed from 'distclean'.  Dep on mostlyclean, not
+	realclean.
+	(realclean): Dep on clean.
+
+1992-01-27  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/bison.simple: Use malloc, not xmalloc, and handle failure
+	explicitly.
+
+1992-01-26  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/conflicts.c (total_conflicts): Delete unused arg to fprintf.
+
+1992-01-21  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* Version 1.16.
+
+1992-01-06  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* Makefile (distclean): Depend on clean, not realclean.  Don't rm
+	TAGS.
+	(realclean): rm TAGS here.
+
+	* src/symtab.c (free_symtab): Don't free the type names.
+
+1991-12-29  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/machine.h: MSDOS has 32-bit ints if __GO32__.
+
+1991-12-25  David J. MacKenzie  <djm@wookumz.gnu.ai.mit.edu>
+
+	* src/bison.simple [_AIX]: Indent `#pragma alloca', so old C
+	compilers don't choke on it.
+
+1991-12-23  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/getopt.c, src/getopt1.c, src/getopt.h: Link them to standard
+	source location.
+	* src/alloca.c: Likewise.
+	* Makefile.in (dist): Copy those files from current dir.
+
+	* src/getargs.c: Update usage message.
+
+	* src/LR0.c (augment_automaton): Put new shift in proper order.
+
+1991-12-20  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/conflicts.c: Use memcpy if ANSI C library.
+
+	* src/closure.c (set_fderives): Delete redundant assignment to
+	vrow.
+
+	* src/closure.c (print_firsts): Fix bounds and offset checking
+	tags.
+
+	* src/closure.c (tags): Declare just once at start of file.
+
+	* src/LR0.c (allocate_itemsets): Eliminate unused var max.
+	(augment_automaton): Test sp is non-null.
+
+	* src/lalr.c (initialize_LA): Make the vectors at least 1 element
+	long.
+
+	* src/reader.c (readgram): Remove separate YYSTYPE default for
+	MSDOS.
+
+1991-12-18  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/print.c (print_grammar): Don't print disabled rules.
+
+1991-12-17  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/lex.c (lex): Parse hex escapes properly.
+	Handle \v when filling token_buffer.
+
+	* src/lex.c: Include new.h.
+	(token_buffer): Change to a pointer.
+	(init_lex): Allocate initial buffer.
+	(grow_token_buffer): New function.
+	(lex, parse_percent_token): Use that.
+
+	* src/reader.c (read_declarations): Call open_extra_files just
+	once.
+	(parse_token_decl): Don't free previous typename value.  Don't
+	increment nvars if symbol is already a nonterminal.
+	(parse_union_decl): Catch unmatched close-brace.
+	(parse_expect_decl): Null-terminate buffer.
+	(copy_guard): Set brace_flag for {, not for }.
+
+	* src/reader.c: Fix %% in calls to fatal.
+
+	* src/reader.c (token_buffer): Just one extern decl, at top level.
+	Declare as pointer.
+
+	* src/symtab.c (free_symtab): Free type_name fields.  Free symtab
+	itself.
+
+1991-11-25  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/bison.simple: Handle alloca for AIX.
+
+	* Makefile.in (mandir): Compute default using manext.
+
+1991-11-02  David J. MacKenzie  <djm@wookumz.gnu.ai.mit.edu>
+
+	* Update all files to GPL version 2.
+
+1991-09-06  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/bison.simple (__yy_bcopy): Use builtin if GCC version 2.
+
+1991-08-26  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/reader.c (parse_assoc_decl): Error if same symbol gets two
+	precs.
+
+1991-08-26  David J. MacKenzie  <djm@pogo.gnu.ai.mit.edu>
+
+	* Makefile.in, configure: Only put $< in Makefile if using VPATH,
+	because older makes don't understand it.
+
+1991-08-23  David J. MacKenzie  <djm@apple-gunkies>
+
+	* src/conflicts.c [_AIX]: #pragma alloca.
+	* src/reduce.c: Don't define TRUE and FALSE if already defined.
+
+1991-08-12  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* Makefile.in: Add deps on system.h.
+	(install): Add some deps.
+
+1991-08-02  David J. MacKenzie  <djm@apple-gunkies>
+
+	* Makefile.in (dist): Include texinfo.tex.
+
+	* configure: Create config.status.  Remove it and Makefile if
+	interrupted while creating them.
+
+1991-08-01  David J. MacKenzie  <djm@apple-gunkies>
+
+	* configure: Check for +srcdir etc. arg and look for
+	Makefile.in in that directory.  Set VPATH if srcdir is not `.'.
+	* Makefile.in (prefix): Renamed from DESTDIR.
+
+1991-07-31  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/print.c (print_grammar): Make output prettier.  Break lines.
+
+1991-07-30  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/print.c (print_grammar): New function.
+	(verbose): Call it instead of printing token names here.
+
+1991-07-22  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/vmsgetargs.c (spec_name_prefix, spec_file_prefix): Define
+	variables.
+
+1991-07-10  David J. MacKenzie  <djm@wookumz.gnu.ai.mit.edu>
+
+	* configure, Makefile.in: $(INSTALLPROG) -> $(INSTALL),
+	$(INSTALLTEXT) -> $(INSTALLDATA).
+
+1991-07-09  David J. MacKenzie  <djm@wookumz.gnu.ai.mit.edu>
+
+	* src/bison.simple: Don't include malloc.h if __TURBOC__.
+
+1991-07-06  David J. MacKenzie  <djm@geech.gnu.ai.mit.edu>
+
+	* Replace Makefile with configure and Makefile.in.  Update README
+	with current compilation instructions.
+
+1991-07-01  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/reader.c (reader): Make the output define YYBISON.
+
+1991-06-20  David J. MacKenzie  <djm@geech.gnu.ai.mit.edu>
+
+	* Makefile (MANDIR, MANEXT): Install man page in
+	/usr/local/man/man1/bison.1 by default, instead of
+	/usr/man/manl/bison.l, for consistency with other GNU programs.
+	* Makefile: Rename BINDIR et al. to lowercase to conform to
+	GNU coding standards.
+	(install): Make man page non-executable.
+
+1991-05-31  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* Makefile (bison.info): New target.
+	(realclean): New target.
+
+1991-05-02  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/bison.simple: Use YYPRINT to print a token, if it's defined.
+
+1991-04-29  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/lalr.c (transpose): Rename R to R_arg.
+	(initialize_LA): Avoid shadowing variable j.
+
+	* src/reader.c (packsymbols): Avoid shadowing variable i.
+
+	* src/files.c: Declare exit and perror.
+
+	* src/machine.h: Define MAXSHORT and MINSHORT for the eta-10.
+
+1991-04-02  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* src/allocate.c (mallocate): Always allocate at least one byte.
+
+1991-03-19  Richard Stallman  <rms@mole.gnu.ai.mit.edu>
+
+	* Makefile (dist): Put alloca.c into distribution.
+
+1991-03-06  Richard Stallman  <rms@mole.ai.mit.edu>
+
+	* src/print.c (print_actions): Nicer output for final states.
+
+1991-02-21  Richard Stallman  <rms@mole.ai.mit.edu>
+
+	* src/output.c (output_rule_data): Break lines in yytline based on
+	hpos.
+
+1991-02-07  Richard Stallman  <rms@mole.ai.mit.edu>
+
+	* src/bison.simple (yyparse): Move decl of yylsa before use.
+
+1991-01-15  Richard Stallman  <rms@mole.ai.mit.edu>
+
+	* Version 1.14.
+
+	* src/output.c (output_rule_data): Handle NULL in tags[i].
+
+1991-01-11  Richard Stallman  <rms@mole.ai.mit.edu>
+
+	* src/bison.simple: On MSDOS, include malloc.h.
+
+1990-12-29  David J. MacKenzie  <djm@wookumz.ai.mit.edu>
+
+	* src/files.c: Use `mallocate' instead of `xmalloc' so no extra
+	decl is needed.
+
+1990-12-19  Richard Stallman  <rms@mole.ai.mit.edu>
+
+	* src/reader.c (readgram): Alternate YYSTYPE defn for MSDOS.
+	* src/files.c [MSDOS]: Declare xmalloc.
+
+1990-12-13  Richard Stallman  <rms@mole.ai.mit.edu>
+
+	* src/output.c (output_rule_data): Put all symbols in yytname.
+
+	* src/bison.simple (yyparse): Delete extra fprintf arg
+	when printing a result of reduction.
+
+1990-12-10  Richard Stallman  <rms@mole.ai.mit.edu>
+
+	* src/reader.c (packsymbols): Don't declare yylval if pure_parser.
+
+1990-10-30  Richard Stallman  <rms@mole.ai.mit.edu>
+
+	* Version 1.12.
+
+	* src/LR0.c (augment_automaton): Fix bugs adding sp2 to chain of
+	shifts.
+
+1990-10-23  Richard Stallman  <rms@mole.ai.mit.edu>
+
+	* src/bison.simple: Don't define alloca if already defined.
+
+1990-10-21  Richard Stallman  <rms@mole.ai.mit.edu>
+
+	* src/getopt.c: On VMS, use string.h.
+
+	* src/main.c (main): Return type int.
+
+1990-09-10  Richard Stallman  <rms@mole.ai.mit.edu>
+
+	* src/output.c (output_headers): Output macro defs for -p.
+
+	* src/reader.c (readgram): Handle consecutive actions.
+
+	* src/getargs.c (getargs): Rename -a to -p.
+	* src/files.c (openfiles): Change names used for -b.
+
+1990-08-27  Richard Stallman  <rms@mole.ai.mit.edu>
+
+	* src/reduce.c (reduce_grammar_tables): Don't map rlhs of disabled
+	rule.
+
+1990-08-26  Richard Stallman  <rms@mole.ai.mit.edu>
+
+	* src/closure.c (print_firsts, print_fderives): Use BITISSET to
+	test bits.
+
+1990-08-23  Richard Stallman  <rms@mole.ai.mit.edu>
+
+	* src/closure.c (print_firsts): vrowsize => varsetsize.
+	(print_fderives): rrowsize => rulesetsize.
+
+1990-08-10  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/bison.simple (alloca): Don't define if already defined.
+	(__yy_bcopy): Alternate definition for C++.
+
+1990-07-11  David J. MacKenzie  <djm@albert.ai.mit.edu>
+
+	* src/getargs.c (getargs): Mention +yacc in usage message.
+
+1990-07-10  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/reader.c (parse_token_decl, copy_action): Set
+	value_components_used if appropriate.
+	(readgram): Inhibit output of YYSTYPE definition in that case.
+
+1990-06-30  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/output.c (output_parser): Define YYPURE if pure, and not
+	otherwise.  Don't define YYIMPURE.
+	* src/bison.simple: Adjust conditionals accordingly.
+	* src/bison.simple (YYLEX): If locations not in use, don't pass
+	&yylloc.
+
+1990-06-28  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/getargs.c (longopts): Add `yacc'.
+
+1990-06-28  David J. MacKenzie  <djm@apple-gunkies>
+
+	* src/getargs.c (getargs): Add long options.
+	* Makefile: Link with getopt1.o and add getopt1.c and getopt.h to
+	dist.
+
+	* Move version number and description back into version.c from
+	Makefile and getargs.c.
+	* Makefile (dist): Extract version number from version.c.
+
+1990-06-26  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/output.c (output): Always call output_gram.
+	* src/bison.simple (yyparse): Print rhs and lhs symbols of
+	reduction rule.
+
+1990-06-21  David J. MacKenzie  <djm@albert.ai.mit.edu>
+
+	* src/main.c: New global var `program_name' to hold argv[0] for
+	error messages.
+	* src/allocate.c, src/files.c, src/getargs.c, src/reader.c: Use
+	`program_name' in messages instead of hardcoded "bison".
+
+1990-06-20  David J. MacKenzie  <djm@albert.ai.mit.edu>
+
+	* Makefile: Specify Bison version here.  Add rule to pass it to
+	version.c.  Encode it in distribution directory and tar file names.
+	* src/version.c: Use version number from Makefile.
+	* src/getargs.c (getargs): Print additional text that used to be
+	part of version_string in version.c.  Use -V instead of -version
+	to print Bison version info.  Print a usage message and exit if
+	given an invalid option.
+
+1990-06-19  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/bison.simple: Fix a #line.
+
+	* Makefile (INSTALL): New parameter.
+	(install): Use that.
+	(CFLAGS): Move definition to top.
+
+1990-06-17  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/reader.c (parse_type_decl): Ignore semicolon.
+	Remove excess % from error messages.
+
+1990-06-16  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* Version 1.11.
+
+	* Makefile (install): Ensure installed files readable.
+
+Tue Jun 12 12:50:56 EDT 1990 Jay Fenlason <hack@ai.mit.edu>
+
+	* src/getargs.c: Declare spec_file_prefix
+
+	* src/lex.c (lex): \a is '\007' instead of '007'
+
+	* src/reader.c: include machine.h
+
+	* src/files.h: Declare extern spec_name_prefix.
+
+	Trivial patch from Thorsten Ohl <td12@ddagsi3.bitnet>
+
+1990-05-31  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* Version 1.10.
+
+	* src/bison.simple (YYBACKUP, YYRECOVERING): New macros.
+	(YYINITDEPTH): This is what used to be YYMAXDEPTH.
+	(YYMAXDEPTH): This is what used to be YYMAXLIMIT.
+	If the value is 0, use the default instead.
+	(yyparse): Return 2 on stack overflow.
+
+1990-05-30  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/bison.simple (YYERROR): Jump to new label; don't print error
+	message.
+	(yyparse): Define label yyerrlab1.
+
+1990-05-16  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/files.c (openfiles): Support -b.
+	* src/getargs.c (getargs): Likewise.
+
+	* src/reader.c (readgram): Error if too many symbols.
+
+	* src/lex.c (lex): Handle \a.  Make error msgs more reliable.
+	* src/reader.c (read_declarations): Make error msgs more reliable.
+
+1990-05-13  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* Version 1.09.
+
+	* src/reduce.c (reduce_grammar_tables): Fix backward test.
+
+1990-05-12  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* Makefile (bison-dist.*): Rename targets and files to bison.*.
+	(bison.tar): Make tar file to unpack into subdirectory named `bison'.
+
+1990-04-30  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/reduce.c (reduce_grammar_tables): Set rlhs to -1 for useless
+	rules.
+	* src/nullable.c (set_nullable): Ignore those rules.
+	* src/derives.c (set_derives): Likewise.
+
+1990-04-23  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/bison.simple (yyparse): Mention rule number as well as line
+	number.
+
+1990-03-29  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/bison.simple (__yy_bcopy): New function.
+	(yyparse): Use that, not bcopy.
+
+1990-03-28  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/print.c (print_actions): Don't alter i and j spuriously when
+	errp==0.
+
+1990-03-12  Jim Kingdon  <kingdon@pogo.ai.mit.edu>
+
+	* src/bison.simple [__GNUC__]: Use builtin_alloca.
+
+1990-03-07  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* Makefile (install): Use mergedir.awk to process bison.simple
+	for installation.
+
+	* src/bison.simple (yyparse): New feature to include possible valid
+	tokens in parse error message.
+
+1990-03-03  Richard Stallman  <rms@geech>
+
+	* Version 1.08.
+
+1990-02-26  Jim Kingdon  <kingdon@pogo.ai.mit.edu>
+
+	* src/print.c (print_actions)
+	* src/conflicts.c (print_reductions): Change "shift %d" to
+	"shift, and go to state %d" and "reduce %d" to "reduce using rule %d"
+	and "goto %d" to "go to state %d".
+	* src/print.c (print_core): Change "(%d)" to "(rule %d)".
+
+1990-02-20  Jay Fenlason  <hack@wookumz.ai.mit.edu>
+
+	* src/bison.simple:  Comment out unused yyresume: label.
+
+1990-02-09  Jay Fenlason <hack@wookumz.ai.mit.edu>
+
+	* src/bison.simple : surround all declarations and (remaining)
+	uses of yyls* and yylloc with #ifdef YYLSP_NEEDED This will
+	significantly cut down on stack usage, and gets rid of
+	unused-variable msgs from GCC.
+
+1990-01-31  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/files.c (done) [VMS]: Don't delete files that weren't used.
+	[VMS]: Let user override XPFILE and XPFILE1.
+
+1990-01-03  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* Version 1.07.
+
+1989-12-16  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/gram.c (dummy): New function.
+
+	* src/reader.c (readgram): Detect error if two consec actions.
+
+1989-11-15  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/reduce.c (reduce_grammar_tables): Update rline like other
+	tables.
+
+	* Makefile (install): Install the man page.
+
+1989-11-11  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/output.c (output_rule_data): Write #if YYDEBUG around yyrline.
+
+1989-10-18  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* Version 1.06.
+
+	* src/vmsgetargs.c (getargs): Downcase specified output file name.
+
+1989-10-13  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/reader.c (readgram): Warn if there is no default to use for
+	$$ and one is needed.
+
+1989-09-29  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* Version 1.05.
+
+	* src/vmsgetargs.h (getargs): Process outfile option.
+
+1989-09-08  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* Version 1.04.
+
+	* src/reader.c (parse_union_decl): Count newlines even in
+	comments.
+
+1989-09-06  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/files.c (openfiles): short_base_length was always ==
+	base_length.
+
+1989-08-24  Richard Stallman  <rms@apple-gunkies.ai.mit.edu>
+
+	* Version 1.03.
+
+	* src/files.c (openfiles): Write output into same dir as input, by
+	default.
+
+1989-08-23  Jay Fenlason  <hack@gnu>
+
+	* Makefile: Include system.h in bison-dist.tar
+
+1989-08-15  Richard Stallman  <rms@hobbes.ai.mit.edu>
+
+	* version 1.03.
+
+	* src/reader.c (reader): Output LTYPESTR to fdefines
+	only after reading the grammar.
+
+1989-08-06  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/reader.c (read_declarations): Put space before comment
+	to avoid bug in Green Hills C compiler.
+
+1989-06-19  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/allocate.c (xmalloc): New function.
+
+1989-06-16  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/build.com: Compile and link reduce.c.
+
+1989-06-09  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/reduce.c (reduce_grammar_tables): Adjust start_symbol when
+	#s change.
+
+1989-05-27  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/reader.c (copy_definition, copy_guard): Don't object to
+	\-newline inside strings.
+
+1989-05-22  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/files.c (openfiles): Alternate file names for MSDOS.
+	(open_extra_files): Likewise.
+	(done): On MSDOS, unlink temp files here, not in openfiles.
+
+	* src/machine.h (BITS_PER_WORD): 16 on MSDOS.
+	(MAXTABLE): Now defined in this file.
+
+	* src/system.h: New file includes system-dependent headers.
+	All relevant .c files include it.
+
+1989-04-27  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/version.c: Version 1.01.
+
+1989-04-18  Randall Smith  <randy@apple-gunkies.ai.mit.edu>
+
+	* src/conflicts.c (total_conflicts): Fixed typo in yacc style
+	output; mention conflicts if > 0.
+
+1989-04-15  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/reader.c (packsymbols): Start new symbols after 256.
+
+1989-04-12  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/reader.c (reader): Always assign code 256 to `error' token.
+	Always set `translations' to 1 so this code gets handled.
+	* src/bison.simple (YYERRCODE): Define it.
+
+1989-04-11  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/conflicts.c: If GNU C, use builtin alloca.
+
+	* Makefile (install): Delete parser files before copying them.
+
+1989-03-30  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/getargs.c (getargs): Turn off checking of name Bison was
+	invoked by.
+
+	* Makefile (dist): Include ChangeLog in distrib.
+
+1989-03-23  Jay Fenlason  <hack@apple-gunkies.ai.mit.edu>
+
+	* src/LR0.c src/closure.c src/conflicts.c src/derives.c
+	src/files.c src/getargs.c src/lalr.c src/lex.c src/main.c
+	src/nullable.c src/output.c src/print.c src/reader.c src/reduce.c
+	src/symtab.c src/warshall.c: A first pass at getting gcc -Wall to
+	shut up.  Mostly declared functions as void, etc.
+
+	* src/reduce.c moved 'extern int fixed_outfiles;' into print_notices
+	where it belongs.
+
+1989-03-01  Randall Smith  <randy@apple-gunkies.ai.mit.edu>
+
+	* src/types.h, src/symtab.h, src/state.h, src/new.h,
+	src/machine.h, src/lex.h, src/gram.h, src/files.h, src/closure.c,
+	src/vmsgetargs.c, src/warshall.c, src/symtab.c, src/reduce.c,
+	src/reader.c, src/print.c, src/output.c, src/nullable.c,
+	src/main.c, src/lex.c, src/lalr.c, src/gram.c, src/getargs.c,
+	src/files.c, src/derives.c, src/conflicts.c, src/allocate.c,
+	src/LR0.c, Makefile, src/bison.simple: Changed copyright notices
+	to be in accord with the new General Public License.
+	* COPYING: Made a link to the new copying file.
+
+1989-02-22  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/new.h (FREE): Alternate definition for __STDC__ avoids error
+	if `free' returns void.
+
+1989-02-21  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/reader.c (read_declarations): Double a `%' in a format string.
+	(copy_definition, parse_start_decl, parse_token_decl): Likewise.
+	(parse_type_decl, parse_union_decl, copy_guard, readgram, get_type).
+	(copy_action): change a `fatal' to `fatals'.
+
+	* src/lalr.c (map_goto): Initial high-end of binary search was off
+	by 1.
+
+1989-02-18  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/bison.simple [sparc]: Include alloca.h.
+
+1989-02-15  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/reader.c (packsymbols): Write decl of yylval into .tab.h file.
+
+1989-01-28  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/bison.simple: Avoid comments on `#line' lines.
+
+	* src/reader.c (LTYPESTR): Rearrange to avoid whitespace after
+	\-newline.
+
+1989-01-09  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/conflicts.c (total_conflicts): if -y, use output syntax
+	POSIX wants.
+	* src/reduce.c (print_notices): likewise.
+
+	* src/lex.c (lex): Handle \v, and \x hex escapes.
+
+	* src/reader.c (reader): Merge output_ltype into here.  Don't
+	output YYLTYPE definition to .tab.h file unless the @ construct is
+	used.
+
+	* src/bison.simple: Define YYERROR, YYABORT, YYACCEPT here.
+	* src/reader.c (output_ltype): Don't output them here.
+
+	* src/bison.simple: YYDEBUG now should be 0 or 1.
+	* src/output.c (output): For YYDEBUG, output conditional to define it
+	only if not previously defined.
+
+1989-01-02  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/bison.simple (yyparse) [YYPURE]: Add local yynerrs.
+	(yydebug): Declare global, but don't initialize, regardless of
+	YYPURE.
+	(yyparse): Don't declare yydebug here.
+
+1988-12-22  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/reduce.c (print_notices): Typo in message.
+
+1988-12-11  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/output.c (pack_table): Free only nonzero the elts of froms &
+	tos.
+
+1988-12-08  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/gram.c (rprecsym): New vector indicates the %prec symbol for
+	a rule.
+	* src/reader.c (packgram): Allocate it and fill it in.
+	* src/reduce.c (inaccessable_symbols): Use it to set V1.
+	* src/reduce.c (print_results): Don't complain about useless token
+	if it's in V1.
+
+1988-12-05  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/machine.h (RESETBIT, BITISSET): New macros.
+	(SETBIT, WORDSIZE): Change to use BITS_PER_WORD.
+
+	* src/reduce.c: New file, by David Bakin.  Reduces the grammar.
+	* Makefile: Compile it, link it, put it in dist.
+
+	* src/main.c (main): Call reduce_grammar (in reduce.c).
+
+1988-11-17  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/conflicts.c: Don't declare alloca if including alloca.h.
+
+	* src/bison.cld: Define qualifiers `nolines', `debug'.
+	* src/vmsgetargs.c (getargs): Handle them.
+
+	* src/output.c (output_program): Notice `nolinesflag'.
+
+	* src/output.c (output_parser): Simplify logic for -l and #line.
+	Avoid writing EOF char into output.
+
+1988-10-12  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* Implement `-l' option.
+	* src/getopt.c: Set flag `nolinesflag'.
+	* src/reader.c (copy_definition, parse_union_decl, copy_guard,
+	copy_action) Obey that flag; don't generate #line.
+	* src/output.c (output_parser): Discard #line's when copying the
+	parser.
+
+1988-09-12  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/reader.c (copy_guard): Fix brace-counting for
+	brace-surrounded guard.
+
+1988-09-08  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/bison.simple: Correct number in #line command.
+	(yyparse): Call YYABORT instead of YYERROR, due to last change in
+	output_ltype.
+
+1988-09-05  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* Makefile: New variable LIBS.  Alternatives for USG.
+	* src/conflicts.c [USG]: Define bcopy.
+	* src/symtab.c [USG]: Include string.h instead of strings.h.
+
+	* src/conflicts.c [sparc]: Include alloca.h.
+
+1988-08-02  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/reader.c (parse_token_decl): Ignore commas.
+
+1988-06-25  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/reader.c (output_ltype): Make YYERROR yacc-compatible (like
+	YYFAIL).
+
+1988-06-24  Richard Stallman  <rms@sugar-bombs.ai.mit.edu>
+
+	* src/getargs.c (getargs): -t sets debugflag.
+	Eliminate upper case duplicate options.
+	* src/output.c (output): If debugflag, output `#define YYDEBUG'.
+
+1988-05-26  Richard Stallman  <rms@frosted-flakes.ai.mit.edu>
+
+	* src/allocate.c (mallocate): New name for `allocate' (which loses
+	in VMS).  Calls changed in LR0.c, conflicts.c, symtab.c, new.h.
+
+	* src/getargs.c (getargs): If argv[0] is "yacc", set fixed_outfiles.
+
+1988-05-17  Richard Stallman  <rms@frosted-flakes.ai.mit.edu>
+
+	* src/conflicts.c: Declare alloca.
+	* src/reader.c: Declare realloc.
+	* src/warshall.c (TC): Fix one arithmetic op that was omitted last
+	time.
+
+1988-05-05  Richard Stallman  <rms@frosted-flakes.ai.mit.edu>
+
+	* src/bison.simple: Conditionalize most refs to yylsp on
+	YYLSP_NEEDED.
+	* src/reader.c (copy_guard, copy_action): Notice if `@' is used.
+	(reader): If it was, output `#define YYLSP_NEEDED'.
+
+1988-04-18  Richard Stallman  <rms@rice-krispies.ai.mit.edu>
+
+	* src/bison.simple: New variable yynerr counts calls to yyerror.
+
+	* src/lex.c (lex, case '='): Update lineno when skipping a newline.
+
+	* src/reader.c (parse_expect_decl): ungetc the char that ends the
+	number; don't read any further.  This handles multi-line comments
+	right and avoids incorrect lineno.
+
+	* src/reader.c: Delete duplicate decl of symval.
+
+	* src/warshall.c (RTC, TC): Cast ptrs to char *, not unsigned, for
+	arith.
diff --git a/contrib/tools/bison/bison/ChangeLog-2012 b/contrib/tools/bison/bison/ChangeLog-2012
new file mode 100644
index 0000000000..458a9e55e2
--- /dev/null
+++ b/contrib/tools/bison/bison/ChangeLog-2012
@@ -0,0 +1,26741 @@
+2012-01-15  Akim Demaille  <demaille@gostai.com>
+
+	java: fix reduction traces.
+	* data/lalr1.java (yy_reduce_print): Fix state index.
+	Reported by Tim Landscheidt.
+
+2012-01-12  Jim Meyering  <meyering@redhat.com>
+
+	build: avoid warning from coverity about lbitset_elt_find
+	* lib/lbitset.c (lbitset_elt_find): Remove unnecessary test of "elt",
+	at a point where we know it is non-NULL, due to prior dereference.
+
+2012-01-13  Jim Meyering  <meyering@redhat.com>
+
+	maint: get fdl.texi from gnulib
+	* bootstrap.conf (gnulib_modules): Add fdl.
+	* doc/fdl.texi: Remove file.
+	* doc/.gitignore: Add it here.
+
+	maint: spell "file system" as two separate words
+	* doc/Doxyfile.in: Spell it "file system", to avoid a
+	"make syntax-check" failure.
+
+	maint: avoid "the the"
+	* djgpp/README.in: s/the the/the/
+	* src/parse-gram.c (lloc_default): Likewise.
+	* src/parse-gram.y (lloc_default): Likewise, and remove a
+	trailing space.
+
+2012-01-13  Akim Demaille  <akim@lrde.epita.fr>
+
+	maint: factor copyright year.
+	* configure.ac: Use $PACKAGE_COPYRIGHT_YEAR instead of repeating it.
+
+2012-01-13  Akim Demaille  <akim@lrde.epita.fr>
+
+	maint: catch missing gnulib macros.
+	* configure.ac: Add m4_pattern_forbid.
+
+2012-01-11  Tim Landscheidt  <tim@tim-landscheidt.de>
+
+	java: remove used variable.
+	* data/lalr1.java (yyresult): remove, unused.
+
+2012-01-11  Akim Demaille  <demaille@gostai.com>
+
+	scanner: fix typo.
+	* src/scan-skel.l (@`): s/emtpy/empty/.
+	Reported by Tim Landscheidt.
+
+2012-01-06  Jim Meyering  <meyering@redhat.com>
+
+	build: avoid warnings about set-but-not-used variables
+	* lib/bitset_stats.c (bitset_stats_list): Remove declaration
+	and set of unused local, "type".
+	* lib/ebitset.c (ebitset_init): Likewise, for "size".
+	* lib/lbitset.c (lbitset_not): Likewise, for "elt".
+
+2011-08-21  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	lalr1.cc: remove trailing comma from enumerator list.
+	* data/lalr1.cc (yy::parser): Here.  This suppresses a -pedantic
+	warning.
+
+2011-08-21  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	tests: add -pedantic for --enable-gcc-warnings.
+	This should help to avoid some portability problems.  For example,
+	it would have revealed the empty unions fixed by the last patch
+	* configure.ac (WARN_CFLAGS_TESTS, WARN_CXXFLAGS_TEST): Implement.
+	* tests/synclines.at (AT_TEST_SYNCLINE): Avoid -pedantic warning
+	about an empty translation unit.
+
+2011-08-21  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	tests: fix empty unions.
+	Empty unions are not accepted by the ISO C99 grammar or by at
+	least some versions of Sun Studio.  Reported by Wolfgang S. Kechel
+	at
+	<http://lists.gnu.org/archive/html/bug-bison/2011-08/msg00003.html>.
+	* NEWS (2.5.1): Document fix.
+	* THANKS (Wolfgang S. Kechel): Add.
+	* tests/existing.at (GNU Cim Grammar)
+	(GNU pic (Groff 1.18.1) Grammar.): Remove empty %union.
+
+2011-07-24  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	global: remove unnecessary horizontal tabs.
+	This change was made by applying emacs' untabify function to
+	nearly all files in Bison's repository.  Required tabs in make
+	files, ChangeLog, regexps, and test code were manually skipped.
+	Other notable exceptions and changes are listed below.
+	* bootstrap: Skip because we sync this with gnulib.
+	* data/m4sugar/foreach.m4
+	* data/m4sugar/m4sugar.m4: Skip because we sync these with
+	Autoconf.
+	* djgpp: Skip because I don't know how to test djgpp properly, and
+	this code appears to be unmaintained anyway.
+	* README-hacking (Hacking): Specify that tabs should be avoided
+	where not required.
+
+2011-07-10  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	build: avoid YACC typo inherited from Autoconf.
+	The typo shows up in the `configure --help' output.  Reported by
+	W.C.A. Wijngaards and Paul Eggert at
+	<http://lists.gnu.org/archive/html/bug-bison/2011-07/msg00000.html>.
+	* README-hacking (Release Procedure): Remind about updating
+	maintainer tools before a release.
+	* THANKS (W.C.A. Wijngaards): Add.
+	* configure.ac (AC_PREREQ): Set to 2.68, which fixes the YACC
+	typo.
+
+2011-07-10  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	build: create xz instead of bzip2 tarballs.
+	Suggested by Jim Meyering at
+	<http://lists.gnu.org/archive/html/bug-bison/2011-06/msg00012.html>.
+	* README-hacking (Release Procedure): Update example.
+	* configure.ac (AM_INIT_AUTOMAKE): Replace dist-bzip2 with
+	dist-xz.
+
+2011-05-29  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	doc: clean up references to `Locations Overview'.
+	* doc/bison.texinfo (Locations Overview): Rename node to...
+	(Locations): ... this, which is its section name.  Update menus to
+	match that and not to use the title `Tracking Locations', which is
+	a different section.
+
+2011-05-29  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	doc: clean up references to `Tracking Locations'.
+	* doc/bison.texinfo (Locations): Rename node to...
+	(Tracking Locations): ... this, which is its section name, and
+	update all cross references.  The trouble is that there is another
+	node about locations.  Its section name is `Locations', which was
+	easily confused with the node name of this node.  Moreover, its
+	node name is `Locations Overview', which was mistakenly used to
+	label some cross references to this node.
+
+2011-05-29  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	doc: clean up `Named References' a little.
+	* doc/bison.texinfo (Named References): Rename section to match
+	the node name, and update all cross references.  Don't use the
+	acronyms RHS and LHS given that we don't expand them anywhere in
+	the manual.  Try to use @samp and @code properly.  Mention that
+	named references are experimental as we've already stated in NEWS.
+	(Destructor Decl): Expand the only remaining use of RHS or LHS.
+
+2011-05-29  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	doc: motivate named references.
+	Suggested by Hans Aberg at
+	<http://lists.gnu.org/archive/html/bug-bison/2011-05/msg00008.html>.
+	* doc/bison.texinfo (Named References): Explain briefly how
+	they're better than the traditional positional references.
+
+2011-05-29  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	doc: discuss named references after locations.
+	Reported by Hans Aberg at
+	<http://lists.gnu.org/archive/html/bug-bison/2011-05/msg00008.html>.
+	* NEWS (2.5.1): Document.
+	* doc/bison.texinfo (Named References): Because it discusses
+	locations in addition to semantic values, move this subsection out
+	of the section `Defining Language Semantics', where locations have
+	not yet been introduced, to be a new section after the following
+	section, `Tracking Locations'.
+
+2011-05-29  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	Prepare for the possibility of a 2.5.1 release.
+	* NEWS (2.5.1): New heading.
+
+2011-05-14  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	Version 2.5.
+	* NEWS (2.5): Set date.
+
+2011-05-14  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	Don't use IF_LINT in Bison sources.
+	It creates unnecessary differences between the sources that Bison
+	maintainers build and test (given that maintainers normally
+	configure with --enable-gcc-warnings) and the sources that Bison
+	users build.  Instead, use PACIFY_CC, which doesn't.  This change
+	fixes compiler warnings reported by Tys Lefering at
+	<http://lists.gnu.org/archive/html/bison-patches/2011-05/msg00004.html>.
+	* configure.ac: Don't AC_DEFINE lint regardless of the configure
+	options.  This change affects imported gnulib sources, where
+	IF_LINT still appears and depends on lint.
+	* src/scan-gram.l, src/scan-skel.l: Replace uses of IF_LINT with
+	PACIFY_CC.
+	* src/system.h (IF_LINT): Remove cpp macro.
+	(PACIFY_CC): New cpp macro.
+
+2011-05-01  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	Fix precedence for end token.
+	Since Bison 2.3b, which restored the ability of precedence
+	directives to assign user token numbers, doing so for user token
+	number 0 has produced an assertion failure.
+	* NEWS (2.5): Document fix.
+	* src/symtab.c (symbol_user_token_number_set): In the case of the
+	end token, don't decrement ntokens if it was never incremented.
+	* tests/regression.at (Token number in precedence declaration):
+	Extend.
+
+2011-05-01  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	Pacify -DGNULIB_POSIXCHECK.
+	* bootstrap.conf (gnulib_modules): Add all modules suggested by
+	-DGNULIB_POSIXCHECK.
+	* src/files.c (file_name_split)
+	* src/getargs.c (getargs)
+	* src/location.c (boundary_set_from_string)
+	* src/output.c (output_skeleton)
+	* src/parse-gram.y (prologue_declaration)
+	* src/scan-gram.l (handle_syncline)
+	* src/symtab.c (symbol_new): Use mbschr and mbsrchr instead of
+	strchr and strrchr.  In the cases of command-line options, file
+	names, and thus locations, functionality may be improved.  In the
+	case of symbol names, there should be no functional difference as
+	all characters are ASCII, so the intended benefit is just warning
+	suppression.
+
+2011-05-01  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	* NEWS (2.5): Fix minor typos.
+
+2011-05-01  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	doc: clean up quotation style in NEWS.
+	* NEWS (2.5): For multi-character tokens in example grammar rules,
+	use "token" not 'token'.  In English, use a consistent quotation
+	style; we might as well follow the precedent seen in info pages:
+	`quote' not "quote".
+
+2011-04-16  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	tests: pacify gcc 4.6.0's -Wunused-but-set-variable.
+	Reported by Jim Meyering at
+	<http://lists.gnu.org/archive/html/bug-bison/2011-04/msg00002.html>.
+	* tests/actions.at
+	(Default %printer and %destructor for mid-rule values): Define
+	YYLLOC_DEFAULT so that it uses its Rhs argument.
+
+2011-04-16  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	glr.c: omit yyresolveLocations when locations are disabled.
+	This prevents gcc 4.6.0's -Wunused-but-set-variable from warning
+	about yyresolveLocations's local yyrhsloc.  When locations are
+	enabled, there's no such warning because YYLLOC_DEFAULT then uses
+	yyrhsloc.  Reported by Jim Meyering at
+	<http://lists.gnu.org/archive/html/bug-bison/2011-04/msg00002.html>.
+	* data/glr.c (yyresolveLocations): Omit definition when locations
+	are disabled.
+	(yyresolveValue): Omit yyresolveLocations invocation when
+	locations are disabled.
+
+2011-04-16  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	gnulib, autoconf: update.
+	* README-hacking (Updating a submodule): Give advice on how to
+	determine the versions of gnulib and autoconf to which we should
+	update.
+	(Release Procedure): Note that submodules should be updated.
+	* bootstrap.conf (gnulib_modules): Rename pipe to spawn-pipe as
+	suggested in updated gnulib NEWS.
+	* gnulib: Choose a stable snapshot according to advice in Bison's
+	README-hacking.
+	* po/POTFILES.in (lib/pipe.c): Rename to...
+	(lib/spawn-pipe.c): ... this.
+	* src/output.c: Update to include spawn-pipe.h.
+	* submodules/autoconf: Update to latest for improvement in m4.m4
+	that excludes M4 with buggy strstr.  The only other changes to
+	files that we use are copyright updates.
+
+2011-04-09  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	Fix missing updates to GPLv3.
+	Reported by Tys Lefering at
+	<http://lists.gnu.org/archive/html/bison-patches/2011-04/msg00000.html>.
+	* src/print-xml.c, src/print-xml.h: In these files.
+
+2011-03-27  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	Add -Wconflicts-sr and -Wconflicts-rr.
+	Thus, conflict reports are now affected by -Werror and -Wnone
+	(unless %expect or %expect-rr is specified).  Reported by George
+	Neuner at
+	<http://lists.gnu.org/archive/html/bug-bison/2010-08/msg00002.html>.
+	* NEWS (2.5): Document.
+	* doc/bison.texinfo (Bison Options): Document.
+	* src/complain.c, src/complain.h (set_warning_issued): Export
+	function.
+	* src/conflicts.c (conflicts_print): Suppress conflict report
+	based on -Wno-conflicts-sr and -Wno-conflicts-rr, and treat
+	conflicts as errors if -Werror.
+	* src/getargs.c (warnings_flag): Initialize with
+	warnings_conflicts_sr and warnings_conflicts_rr as well.
+	(warnings_args, warnings_types): Add entries for
+	warnings_conflicts_sr and warnings_conflicts_rr.
+	(usage): Update.
+	* src/getargs.h (enum warnings): Add entries for
+	warnings_conflicts_sr and warnings_conflicts_rr.
+	* tests/conflicts.at (-W versus %expect and %expect-rr): New test
+	group.
+	* tests/local.at (AT_BISON_CHECK_NO_XML): Update now that the
+	conflict report can produce a "warnings being treated as errors"
+	message.  Also, check that stderr is now fully scrubbed by -Wnone
+	when the exit status is 0.
+
+2011-03-27  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	Pacify maintainer-check-posix.
+	Adding command-line options after the grammar file name is not
+	permitted, so disable checks that do that when
+	maintainer-check-posix is running.
+	* tests/local.at (AT_BISON_CHECK_NO_XML): Don't run the
+	problematic checks when POSIXLY_CORRECT=1.  Also, for readability,
+	remove an unnecessary m4_if.
+
+2011-03-27  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	Add -Wother so -Wnone suppresses all warnings.
+	Reported by George Neuner at
+	<http://lists.gnu.org/archive/html/bug-bison/2010-08/msg00002.html>.
+	* NEWS (2.5): Document.
+	* THANKS (George Neuner): Add.
+	* doc/bison.texinfo (Bison Options): Document.
+	* src/complain.c, src/complain.h
+	(warn_at, warn_at_indent, warn): Suppress warning if -Wno-other.
+	(midrule_value_at): New warning function, similar to yacc_at in
+	that it's controlled by its own warning category.
+	* src/getargs.c (warnings_flag): Initialize to warnings_other.
+	(warnings_args, warnings_types): Add entry for warnings_other.
+	(usage): Update.
+	* src/getargs.h (enum warnings): Add entry for warnings_other.
+	* src/gram.c (grammar_rules_useless_report): If -Wno-other, then
+	don't print useless rules.
+	* src/reader.c (symbol_should_be_used): Rather than adjusting the
+	return value based on whether midrule value warnings are enabled,
+	accept a new parameter for telling the caller whether true is
+	being returned for a potential midrule warning.
+	(grammar_rule_check): Use midrule_value_at for midrule value
+	warnings, and continue to use warn_at for all other warnings.  Let
+	them check whether the warnings are enabled.
+	* tests/local.at (AT_BISON_CHECK): Update documentation.
+	(AT_BISON_CHECK_NO_XML): Check that -Wnone and --warnings=none
+	disable all warnings exercised in the test suite.
+
+2011-03-27  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	Don't let -Wnone disable -Werror.
+	Discussed at
+	<http://lists.gnu.org/archive/html/bison-patches/2010-08/msg00009.html>.
+	* NEWS (2.5): Document.
+	* src/getargs.c (flags_argmatch): Accept a new argument that
+	specifies what flags "all" and thus "none" affect.
+	(FLAGS_ARGMATCH): Update flags_argmatch invocation.
+	* tests/input.at (-Werror is not affected by -Wnone and -Wall):
+	New test group.
+
+2011-03-27  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	* NEWS (2.5): Document fix for -Wno-CATEGORY.
+
+2011-03-20  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	doc: fix confusing citation of LAC publication.
+	Suggested by Akim Demaille.
+	* doc/bison.texinfo (LAC): Here.
+
+2011-03-20  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	lr.default-reductions: rename "full" value to "most".
+	Unlike "consistent" and "accepting", "full" doesn't answer the
+	question of "which states".
+	* doc/bison.texinfo (%define Summary): Update.
+	(Default Reductions): Update.
+	* src/print.c (print_reductions): Update.
+	* src/reader.c (prepare_percent_define_front_end_variables):
+	Update.
+	* src/tables.c (action_row): Update.
+	* tests/input.at (%define enum variables): Update.
+	* tests/reduce.at (%define lr.default-reductions): Update.
+
+2011-03-13  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	* src/parse-gram.c, src/parse-gram.h: Regenerate.
+
+2011-03-09  Akim Demaille  <akim@lrde.epita.fr>
+
+	named references: fix double free.
+	In `rhs[name]: "a" | "b"', do not free "name" twice.
+	Reported by Tys Lefering.
+	<http://lists.gnu.org/archive/html/bug-bison/2010-06/msg00002.html>
+	* src/named-ref.h, src/named-ref.c (named_ref_copy): New.
+	* src/parse-gram.y (current_lhs): Rename as...
+	(current_lhs_symbol): this.
+	(current_lhs): New function.  Use it to free the current lhs
+	named reference.
+	* src/reader.c: Bind lhs to a copy of the current named reference.
+	* src/symlist.c: Rely on free (0) being valid.
+	* tests/named-refs.at: Test this.
+
+2011-03-09  Akim Demaille  <akim@lrde.epita.fr>
+
+	tests: style changes.
+	* tests/named-refs.at (Redundant words in LHS brackets)
+	(Unresolved references): here.
+
+2011-03-06  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	java: fix parser tracing bug.
+	* NEWS (2.5): Document.
+	* data/lalr1.java (YYParser::YYStack::print): Don't skip top
+	element.
+
+2011-03-06  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	java: finish fixing parser stack popping bug.
+	* NEWS (2.5): Document.
+	* data/lalr1.java (YYParser::YYStack::pop): Fix off-by-one error
+	in clearing the location stack.  Also fix pop function that
+	accepts no arguments.
+
+2011-03-06  Angelo Borsotti  <angelo.borsotti@gmail.com>  (tiny change)
+
+	java: fix parser stack popping bug.
+	Reported at
+	<http://lists.gnu.org/archive/html/bug-bison/2011-02/msg00005.html>.
+	* THANKS (Angelo Borsotti): Add.
+	* data/lalr1.java (YYParser::YYStack::pop): Fix off-by-one error
+	in clearing the value stack.  Previously, the top element of the
+	stack wasn't cleared and so the value was not garbage collected.
+
+2011-03-06  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	doc: cite publication for LAC.
+	* doc/bison.texinfo (LAC): Here.
+
+2011-03-06  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	doc: clean up terminology for mysterious conflicts.
+	* doc/bison.texinfo (Mystery Conflicts): Rename node to...
+	(Mysterious Conflicts): ... this, which is already the section
+	title and the name used in the index.  Update all cross-references
+	to this node.  Also, don't imply that R/R conflicts are the only
+	kind of mysterious conflict.
+
+2011-03-06  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	lr.default-reductions: rename "all" value to "full".
+	States that shift the error token do not have default reductions,
+	and GLR disables some default reductions, so "all" was a misnomer.
+	* doc/bison.texinfo (%define Summary): Update.
+	(Default Reductions): Update.
+	* src/print.c (print_reductions): Update.
+	* src/reader.c (prepare_percent_define_front_end_variables):
+	Update.
+	* src/tables.c (action_row): Update.
+	* tests/input.at (%define enum variables): Update.
+	* tests/reduce.at (%define lr.default-reductions): Update.
+
+2011-03-06  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	doc: create a new Tuning LR section in the manual.
+	And clean up all other documentation of the features described
+	there.
+	* NEWS (2.5): Tweak wording of lr.type and parse.lac entries a
+	bit, update the cross-references to the manual, and point out that
+	LAC has caveats.  Don't be so adamant that IELR+LAC=canonical LR.
+	That is, as the referenced section in the manual documents, LAC
+	does not fix infinite parsing loops on syntax errors.
+	* doc/bison.texinfo: Consistently drop the "(1)" suffix from LALR,
+	IELR, and LR in @cindex.
+	(%define Summary): Condense the entries for lr.default-reductions,
+	lr.keep-unreachable-states, lr.type, and parse.lac into brief
+	summaries, and cross-reference the appropriate subsections of
+	Tuning LR.  For parse.lac, mention that it's only implemented for
+	deterministic parsers in C.  In parse.error entry, mention LAC,
+	and add cross-reference to the LAC section.
+	(Error Reporting): When mentioning parse.error, mention LAC, and
+	add cross-reference to the LAC section.
+	(Tuning LR): New section with an extended version of the
+	documentation removed from %define Summary.  Change all
+	cross-references in the manual to point here instead of there.
+	(Calc++ Parser): When mentioning parse.error, mention LAC, and add
+	cross-reference to the LAC section.
+	(Table of Symbols): In %error-verbose entry, add cross-reference
+	to Error Reporting.
+	(Glossary): Capitalize entry titles consistently.  Add definitions
+	for "defaulted state" and "unreachable state".  Expand IELR
+	acronym in IELR's entry.
+
+2011-02-20  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	doc: add bibliography to manual.
+	* doc/bison.texinfo (Mystery Conflicts): Cross-reference
+	bibliography instead of citing publications directly.
+	(Generalized LR Parsing): Likewise.
+	(Bibliography): New section.  Not all entries are cross-referenced
+	yet, but that will come in future patches.
+
+2011-02-19  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	java: test and document previous bug fix.
+	* NEWS (2.5): Document it.
+	* tests/java.at (_AT_DATA_JAVA_CALC_Y): To one of the yyerror
+	invocations, pass a location that spans multiple tokens.  Change
+	yyerror to report all of a location rather than just the begin
+	position.  Extend yylex and Position to count tokens on a line.
+	Remove getHashCode as it's unused.  Update all expected output.
+
+2011-02-19  Bernd Kiefer  <kiefer@dfki.de>  (tiny change)
+
+	java: fix location handling bug.
+	Reported at
+	<http://lists.gnu.org/archive/html/bison-patches/2011-02/msg00005.html>.
+	* data/lalr1.java (YYParser::yylloc): For non-empty RHS, fix
+	reversed access to location stack.
+	* THANKS (Bernd Kiefer): Add.
+
+2011-02-13  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	doc: fix some minor inconsistencies.
+	* doc/bison.texinfo (%define Summary): Fix mislabeled entry for
+	lex_symbol.
+	(%code Summary): For consistency with the variable list in the
+	%define Summary, enclose the list of %code qualifiers in a table
+	instead of an itemize.
+
+2011-02-06  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	doc: clean up new subsections in manual.
+	* doc/bison.texinfo (%define Summary): Reword so it reads well as
+	a separate section.  For example, add an intro, and move most of
+	the text outside of the @deffn so it is not indented so far.
+	(%code Summary): Likewise.
+	(Table of Symbols): Reword %code entry to match the %code entry in
+	Decl Summary.
+
+2011-02-06  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	doc: finish splitting apart the manual's Decl Summary section.
+	Suggested by Akim Demaille at
+	<http://lists.gnu.org/archive/html/bison-patches/2009-05/msg00013.html>.
+	* doc/bison.texinfo (Decl Summary): Extract most of the %define
+	entry into...
+	(%define Summary): ... this new subsection, and update all
+	cross-references.  For readability of the patches, rewriting of
+	the text so it makes sense as a separate subsection will come in a
+	later patch.  Moreover, the majority of the text describing the
+	various new LR features should likely move to another new section
+	somewhere.
+
+2011-02-06  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	doc: begin to split apart the manual's Decl Summary section.
+	Discussed in thread starting at
+	<http://lists.gnu.org/archive/html/bison-patches/2009-05/msg00013.html>.
+	* doc/bison.texinfo (Decl Summary): Extract most of the %code
+	entry into...
+	(%code Summary): ... this new subsection, and update all
+	cross-references.  For readability of the patches, rewriting of
+	the text so it makes sense as a separate subsection will come in a
+	later patch.
+
+2011-02-06  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	doc: clean up naming of various Bison files.
+	The Bison manual's names for various files associated with a Bison
+	parser has devolved into inconsistency.  This patch makes the
+	naming consistent for the most important files.  First, it chooses
+	"grammar file" over "input file".  The former appears to be more
+	traditional in the Bison manual, and Bison has other input
+	files (skeletons).  Second, it chooses "parser implementation
+	file" over names like "parser file", "parser source file", "parser
+	source code file", and "parser output file".  The new name makes
+	it clearer where Bison generates the main parser implementation,
+	and it is easily distinguishable from "parser header file".
+	* doc/bison.texinfo: Implement throughout.
+
+2011-02-06  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	doc: give credit to more of Bison's developers.
+	* doc/bison.texinfo (Introduction): Don't imply that only Robert
+	Corbett, Richard Stallman, and Wilfred Hansen have contributed to
+	Bison.  However, I don't have time to write a full history, so
+	just point readers to THANKS and ChangeLog.
+
+2011-02-06  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	doc: document experimental features better.
+	* doc/bison.texinfo (Introduction): Say that IELR(1) and canonical
+	LR(1) are experimental.  Mention Java.  Normally experimental
+	features probably shouldn't be mentioned in the introduction.
+	However, if Bison's limitations to LALR(1), C, and C++ are so
+	important that they should be mentioned here, then it's important
+	to point out that Bison is beginning to escape those limitations.
+	Moreover, these particular experimental features have very little
+	chance of being removed.
+	* src/getargs.c (usage): Say that IELR(1) and canonical LR(1) are
+	experimental.
+
+2011-01-29  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	Do not allow identifiers that start with a dash.
+	This cleans up our previous fixes for a bug whereby Bison
+	discarded `.field' in `$-1.field'.  The previous fixes were less
+	restrictive about where a dash could appear in an identifier, but
+	the restrictions were hard to explain.  That bug was reported and
+	this final fix was originally suggested by Paul Hilfinger.  This
+	also fixes a remaining bug reported by Paul Eggert whereby Bison
+	parses `%token ID -123' as `%token ID - 123' and handles `-' as an
+	identifier.  Now, `-' cannot be an identifier.  Discussed in
+	threads beginning at
+	<http://lists.gnu.org/archive/html/bug-bison/2011-01/msg00000.html>,
+	<http://lists.gnu.org/archive/html/bug-bison/2011-01/msg00004.html>.
+	* NEWS (2.5): Update entry describing the dash extension to
+	grammar symbol names.  Also, move that entry before the named
+	references entry because the latter mentions the former.
+	* doc/bison.texinfo (Symbol): Update documentation for symbol
+	names.  As suggested by Paul Eggert, mention the effect of periods
+	and dashes on named references.
+	(Decl Summary): Update documentation for unquoted %define values,
+	which, as a side effect, can no longer start with dashes either.
+	* src/scan-code.l (id): Implement.
+	* src/scan-gram.l (id): Implement.
+	* tests/actions.at (Exotic Dollars): Extend test group to exercise
+	bug reported by Paul Hilfinger.
+	* tests/input.at (Symbols): Update test group, and extend to
+	exercise bug reported by Paul Eggert.
+	* tests/named-refs.at (Stray symbols in brackets): Update test
+	group.
+	($ or @ followed by . or -): Likewise.
+	* tests/regression.at (Invalid inputs): Likewise.
+
+2011-01-24  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	* data/yacc.c: Fix last apostrophe warning from xgettext.
+
+2011-01-09  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Fix minor problems encountered by a fresh bootstrap.
+	* data/glr.c, data/yacc.c: Do not use apostrophes in '#' comments,
+	as they confuse xgettext, which tries to parse them as C character
+	constants in a preprocessor directive.
+	* data/yacc.c (yy_lac): Don't use printf %d format on *yyesp, as
+	that expression might not promote to int on some platforms.
+	* src/parse-gram.c, src/parse-gram.h: Regenerate.
+
+2011-01-09  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	Improve error messages for `$' or `@' followed by `.' or `-'.
+	Previously, for this special case of an invalid reference, the
+	usual "symbol not found in production:" was printed.  However,
+	because the symbol name was parsed as the empty string, that
+	message was followed immediately by a newline instead of a symbol
+	name.  In reality, this is a syntax error, so the reference is
+	invalid regardless of the symbols actually appearing in the
+	production.  Discussed at
+	<http://lists.gnu.org/archive/html/bison-patches/2011-01/msg00012.html>.
+	* src/scan-code.l (parse_ref): Report the above case as a syntax
+	error.  Other than that, continue to handle this case like any
+	other invalid reference that Bison manages to parse because
+	"possibly meant" messages can still be helpful to the user.
+	* tests/named-refs.at ($ or @ followed by . or -): New test group.
+
+2011-01-08  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	doc: don't use @acronym.
+	Lately, many GNU packages are dropping it.  See
+	<http://lists.gnu.org/archive/html/bison-patches/2011-01/msg00003.html>.
+	* doc/bison.texinfo: Remove all uses.
+
+2011-01-05  Alex Rozenman  <rozenman@gmail.com>
+
+	Do not allow identifiers that start with a negative number.
+	Reported by Paul Hilfinger as a side effect of named references
+	support at
+	<http://lists.gnu.org/archive/html/bug-bison/2011-01/msg00000.html>.
+	Suggested by Paul Eggert.
+	* src/scan-code.l ({letter}, {id}): Adjust lexical definitions.
+	* src/scan-gram.l ({letter}, {id}): Likewise.
+
+2011-01-03  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	* ChangeLog (2011-01-02): improve description.
+
+2011-01-03  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	maint: don't update copyright years in bootstrap.
+	* .x-update-copyright: Add entry for bootstrap.
+	* bootstrap: Remove 2011 from copyright years.  The bootstrap
+	version we're currently using comes from an older version of
+	gnulib.
+	* bootstrap.conf (bootstrap_sync): Add comments explaining this
+	issue.
+
+2011-01-02  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	maint: run "make update-copyright".
+
+2011-01-02  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	maint: prepare to use year ranges in copyright notices.
+	* README (Copyright statements): New section explaining the range
+	notation.  The GNU maintainers document requires this explanation:
+	<http://www.gnu.org/prep/maintain/maintain.html#Copyright-Notices>.
+	I copied our explanation from coreutils.
+	* build-aux/update-b4-copyright: Revert 2010-06-17 changes that
+	disabled Bison's automated use of ranges.
+	* cfg.mk (update-copyright-env): Likewise.
+
+2011-01-02  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	Correct my email address.
+	* ChangeLog: In all recent entries.
+	* THANKS (Joel E. Denny): Here.
+
+2010-12-19  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	doc: cleanup.
+	* NEWS (2.5): Try to sort entries according to how interesting
+	users might find them.
+
+2010-12-19  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	doc: cleanup.
+	* NEWS (2.5): Make some minor improvements to wording, and format
+	entries more consistently.
+	* doc/bison.texinfo (Language and Grammar): Point out that IELR
+	and canonical LR are experimental features.
+	(Decl Summary): In list of %define variables, make wording more
+	consistent.  Improve discussion of using LALR for GLR.
+
+2010-12-19  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	parse.lac: document.
+	* NEWS (2.5): Add entry for LAC, and mention LAC in entry for
+	other corrections to verbose syntax error messages.
+	* doc/bison.texinfo (Decl Summary): Rewrite entries for
+	lr.default-reductions and lr.type to be clearer, to mention
+	%nonassoc's effect on canonical LR, and to mention LAC.  Add entry
+	for parse.lac.
+	(Glossary): Add entry for LAC.
+
+2010-12-11  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	parse.lac: implement exploratory stack reallocations.
+	* data/yacc.c: Rename %define variable parse.lac.es-capacity to
+	parse.lac.es-capacity-initial.  Accept parse.lac.memory-trace
+	with values of "failures" (default) or "full".
+	(b4_declare_parser_state_variables): Add yyesa, yyes, and
+	yyes_capacity variables.
+	(YYSTACK_USE_ALLOCA): Ignore it if LAC requested.
+	(YYSTACK_ALLOC, YYSTACK_FREE, YYSTACK_ALLOC_MAXIMUM): Define if
+	LAC requested.
+	(YYCOPY_NEEDED): New cpp macro.
+	(YYCOPY): Define if LAC requested.
+	(yy_lac_stack_realloc): New function implementing stack
+	reallocations.  Use YYMAXDEPTH for maximum stack size given that
+	the stack should never need to grow larger than the main state
+	stack needs to grow without LAC.
+	(YY_LAC_ESTABLISH): Update yy_lac invocation.
+	(yy_lac): Add arguments for exploratory stack memory data
+	recorded in the main parser.  Invoke yy_lac_stack_realloc when
+	reallocation is necessary.
+	(yysyntax_error): Add the same new arguments and pass them to
+	yy_lac.
+	(yypstate_delete): Free yyes if necessary.
+	(yyesa, yyes, yyes_capacity): #define these to yypstate members
+	in the case of push parsing.
+	(yyparse, yypush_parse): Initialize yyes and yyes_capacity.
+	Update yysyntax_error invocations.  At yyreturn, free yyes if
+	necessary.
+	* src/parse-gram.y: %define parse.lac full.
+	* tests/input.at (LAC: errors for %define): Extend for
+	parse.lac-memory-trace.
+	* tests/regression.at (LAC: Exploratory stack): Extend to check
+	that stack reallocs happen when expected.
+	(LAC: Memory exhaustion): Update to use YYMAXDEPTH and
+	parse.lac.es-capacity-initial.
+
+2010-12-11  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	parse.lac: implement as %define variable.
+	LAC = lookahead correction.  See discussion at
+	<http://lists.gnu.org/archive/html/bison-patches/2009-09/msg00034.html>.
+	However, one point there must be corrected: because of %nonassoc,
+	LAC is *not* always redundant for lr.type=canonical-lr.
+	* data/yacc.c: Accept values of "none" (default) or "full" for
+	parse.lac.  Accept %define parse.lac.es-capacity to specify
+	capacity of LAC's temporary exploratory stack.  It defaults to 20
+	and, for now, will not grow dynamically.
+	(b4_lac_flag, b4_lac_if): New m4 macros.  Evaluate as true for
+	parse.lac!=none.
+	(YYBACKUP): Invoke YY_LAC_DISCARD.
+	(YY_LAC_ESTABLISH, YY_LAC_DISCARD): New cpp macros that invoke
+	yy_lac and track when it needs to be invoked
+	(yy_lac): New function that, given the current stack, determines
+	whether a token can eventually be shifted.  Return status mimics
+	yyparse return status.
+	(yysyntax_error): Change yystate argument to yyssp so stack top
+	can be passed to yy_lac.  If LAC is requested, build expected
+	token list by invoking yy_lac for every token instead of just
+	checking the current state for lookaheads.  Return 2 if yy_lac
+	exhausts memory.
+	(yyparse, yypush_parse): Use local variable yy_lac_established and
+	cpp macros YY_LAC_ESTABLISH and YY_LAC_DISCARD to implement LAC.
+	Update yysyntax_error invocation.  Add yyexhaustedlab code if LAC
+	is requested.
+	* tests/conflicts.at (%nonassoc and eof): Extend to check the
+	effect of each of -Dlr.type=canonical-lr and -Dparse.lac=full.
+	(parse.error=verbose and consistent errors): Likewise.
+	(LAC: %nonassoc requires splitting canonical LR states): New test
+	group demonstrating how LAC can fix canonical LR.
+	* tests/input.at (LAC: Errors for %define): New test group.
+	* tests/regression.at (LAC: Exploratory stack): New test group.
+	(LAC: Memory exhaustion): New test group.
+
+2010-11-21  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	build: use gnulib's new bootstrap_sync option.
+	Now, whenever we update bison's copy of gnulib, bootstrap will
+	update itself the next time it's run.
+	* bootstrap: Copy from latest gnulib for bootstrap_sync support.
+	* bootstrap.conf (bootstrap_sync): Set to true.
+	* gnulib: Update to latest so bootstrap is in sync now.
+
+2010-11-07  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	yysyntax_error: fix for consistent error with lookahead.
+	* NEWS (2.5): Document.
+	* data/yacc.c (yysyntax_error): In a verbose syntax error
+	message while in a consistent state with a default action (which
+	must be an error action given that yysyntax_error is being
+	invoked), continue to drop the expected token list, but don't
+	drop the unexpected token unless there actually is no lookahead.
+	Moreover, handle that internally instead of returning 1 to tell
+	the caller to do it.  With that meaning of 1 gone, renumber
+	return codes more usefully.
+	(yyparse, yypush_parse): Update yysyntax_error usage.  Most
+	importantly, set yytoken to YYEMPTY when there's no lookahead.
+	* data/glr.c (yyreportSyntaxError): As in yacc.c, don't drop the
+	unexpected token unless there actually is no lookahead.
+	* data/lalr1.cc (yy::parser::parse): If there's no lookahead,
+	pass yyempty_ not yyla.type to yysyntax_error_.
+	(yy::parser::yysyntax_error_): Again, don't drop the unexpected
+	token unless there actually is no lookahead.
+	* data/lalr1.java (YYParser::parse): If there's no lookahead,
+	set yytoken to yyempty_ before invoking yysyntax_error.
+	(YYParser::yysyntax_error): Again, don't drop the unexpected
+	token unless there actually is no lookahead.
+	* tests/conflicts.at (parse.error=verbose and consistent
+	errors): Extend test group to further reveal how the previous
+	use of the simple "syntax error" message was too general.  Test
+	yacc.c, glr.c, lalr1.cc, and lalr1.java.  No longer an expected
+	failure.
+	* tests/java.at (AT_JAVA_COMPILE, AT_JAVA_PARSER_CHECK): Move
+	to...
+	* tests/local.at: ... here.
+	(_AT_BISON_OPTION_PUSHDEFS): Push AT_SKEL_JAVA_IF definition.
+	(AT_BISON_OPTION_POPDEFS): Pop it.
+	(AT_FULL_COMPILE): Extend to handle Java.
+
+2010-11-07  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	yysyntax_error: more preparation for readability of next patch.
+	There are no behavioral changes here.
+	* data/glr.c (yyreportSyntaxError): Reorganize.
+	* data/lalr1.cc (yy::parser::yysyntax_error_): Reorganize.
+	* tests/conflicts.at (parse.error=verbose and consistent errors):
+	Reorganize.
+
+2010-11-07  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	yysyntax_error: prepare for readability of next patches.
+	These are purely whitespace changes that result in ugly code
+	but that make the next couple of patches much easier to read.
+	* data/glr.c (yyreportSyntaxError): Reindent.
+	* data/lalr1.cc (yy::parser::yysyntax_error_): Reindent.
+	* data/lalr1.java (YYParser::yysyntax_error): Reindent.
+	* data/yacc.c (yysyntax_error): Reindent.
+
+2010-10-31  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	Fix memory leak.
+	* src/output.c (prepare_rules): Free temporary array.
+
+2010-10-31  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	yysyntax_error: improve invocation readability.
+	* data/yacc.c (yyparse, yypush_parse): For yysyntax_error
+	invocation, get rid of the while loop, which is misleading
+	because there are really at most two iterations.
+
+2010-10-31  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	* ChangeLog: Correct some errors in previous entries.
+
+2010-10-17  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	maint: re-anchor all .gitignore entries.
+	* bootstrap: Copy from gnulib's latest for the fix to
+	automatically anchor entries it constructs.
+	* gnulib: Update to latest just so it has the same bootstrap.
+	* .gitignore, build-aux/.gitignore, doc/.gitignore:
+	* lib/.gitignore, m4/.gitignore, po/.gitignore:
+	* runtime-po/.gitignore: Re-anchor all entries.
+
+2010-10-08  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Fix portability problem on OpenBSD 4.7.
+
+	Jim Meyering reported this in
+	<http://lists.gnu.org/archive/html/bug-bison/2010-10/msg00007.html>.
+	* data/yacc.c: Use EXIT_SUCCESS as a witness for stdlib.h,
+	not _STDLIB_H.  EXIT_SUCCESS has been defined by the standard
+	for quite some time.
+	* src/parse-gram.c, src/parse-gram.h: Regenerate.
+	* tests/regression.at: Tamper with the renamed witness.
+
+	Adjust to recent changes to gnulib bootstrap.
+
+	* .cvsignore, build-aux/.cvsignore, doc/.cvsignore, etc/.cvsignore:
+	* examples/calc++/.cvsignore, lib/.cvsignore, m4/.cvsignore:
+	* po/.cvsignore, runtime-po/.cvsignore, src/.cvsignore:
+	* tests/.cvsignore: Remove; I don't use CVS to maintain Bison
+	anymore and don't know of anybody else who does.  If someone needs
+	these files, they can resurrect them.
+	* .gitignore, build-aux/.gitignore, doc/.gitignore, lib/.gitignore:
+	* m4/.gitignore, po/.gitignore, runtime-po/.gitignore:
+	Omit leading '/', since bootstrap omits it.
+	Adjust file names to match current contents better.
+	* bootstrap: Sync from gnulib: this contains the new gnulib_mk_hook
+	installed just for us.
+	* bootstrap.conf (excluded_files): Don't exclude codeset.m4,
+	glibc21.m4, inttypes_h.m4, size_max.m4, xsize.m4, as they are now
+	needed somehow.  Don't have time to look into why.
+	(gnulib_modules): Change malloc to malloc-gnu.  Do we really assume
+	the GNU malloc behavior, where malloc (0) != NULL unless we're
+	out of storage?  If not, we can omit malloc-gnu; but for now I left
+	it in to be safe.
+	(vc_ignore): Remove.
+	(gnulib_mk_hook): New function.
+	* README-hacking: Renamed from HACKING, since gnulib bootstrap now
+	uses that convention.
+
+2010-09-09  Paul Hilfinger  <hilfinger@cs.berkeley.edu>
+
+	* data/glr.c (yySymbol): Define as int to avoid compiler warnings about
+	possible change of value.
+
+2010-09-08  Paul Hilfinger  <hilfinger@cs.berkeley.edu>
+
+	* data/glr.c (yy_reduce_print): Change yyrhsVals to yyvsp to remove
+	compiler errors when using %debug.
+	Add declaration of yylow when locations in use to avoid compilation
+	error.
+	(yyglrReduce): Conditionalize message "Parse ... rejected by rule..."
+	on whether we are in split mode, for consistency with behavior of
+	non-GLR parsing.
+
+2010-09-01  Akim Demaille  <demaille@gostai.com>
+
+	Address GCC warnings about shadowed local variables (yyflag).
+	* data/glr.c (YYCHK): Rename yyflag as yychk_flag.
+	(yyprocessOneStack): Reduce the scope of yyaction, yyconflicts,
+	yyrule, and yyflag.
+
+2010-08-05  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	Version 2.4.3.
+	* NEWS (2.4.3): Set date.
+
+2010-08-04  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	maint: add gettext version to release announcements.
+	Suggested by Paul Hilfinger at
+	<http://lists.gnu.org/archive/html/bison-patches/2010-07/msg00019.html>
+	<http://lists.gnu.org/archive/html/bison-patches/2010-08/msg00002.html>.
+	* cfg.mk (bootstrap-tools): Add gettext.
+
+2010-08-04  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	doc: fix -W and %expect documentation some.
+	* NEWS (2.4.3): Mention that there are documentation fixes.
+	* doc/bison.texinfo (Expect Decl): Make it clear that %expect
+	turns conflicts into errors not warnings.
+	(Shift/Reduce): Likewise.
+	(Bison Options): Don't mention -Wsyntax.  It doesn't exist.
+
+2010-08-01  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	-Werror: fix for rules useless in parser after conflicts.
+	* NEWS (2.4.3): Document fix.
+	* src/complain.c (error_message): Extend to handle incomplete
+	error messages so warn and warn_at can be used in more cases.
+	* src/gram.c (grammar_rules_useless_report): Use warn_at so that
+	-Werror is always obeyed.
+	* src/reduce.c (reduce_print): Use warn so that the "warnings
+	being treated as errors" message is printed consistently before
+	the first warning message.  This makes testing easier.
+	* tests/local.at (AT_BISON_WERROR_MSG): New macro.
+	(AT_BISON_CHECK_NO_XML): Extend to check -Werror and
+	--warnings=error when warnings appear in bison's stderr.
+
+2010-07-29  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	maint: enable gnits only at stable releases.
+	* configure.ac (AM_INIT_AUTOMAKE): Underscore or dash in a
+	version string should disable gnits.  Explain in comments.
+
+2010-07-28  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	i18n: update.
+	* po/POTFILES.in: Add src/graphviz.c.
+
+2010-07-28  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	i18n: fix for gnulib.
+	* po/POTFILES.in: Add remaining gnulib files that have
+	translatable strings.
+
+2010-07-25  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	build: fix our adjustments for gnulib files in lib.
+	* configure.ac: For prepending lib/ to the values of config
+	variables, fix detection of empty values.  Also, due to recent
+	gnulib changes, add LIBUNISTRING_UNITYPES_H and
+	LIBUNISTRING_UNIWIDTH_H to the list of those variables.
+
+2010-07-25  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	maint: use announce-gen's new --mail-headers.
+	* HACKING (Announce): Update instructions.
+	* cfg.mk (announcement_Cc_): Define.
+	* configure.ac (AM_GNU_GETTEXT_VERSION): Update to 0.18 as
+	required by latest gnulib.
+	* gnulib: Update to latest.
+
+2010-07-24  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	tests: handle Valgrind that complains about >&-.
+	* tests/output.at (AT_CHECK_OUTPUT): Extend to accept pre-tests.
+	(Output files: -dv >&-): Skip test group if running
+	maintainer-check-valgrind.
+
+2010-07-23  Paul Hilfinger  <hilfingr@EECS.Berkeley.EDU>
+
+	* NEWS: Describe new semantic-predicate feature.
+	* data/c.m4 (b4_predicate_case): New definition.
+	* data/java.m4 (b4_predicate_case): New definition.
+	* data/glr.c (yyimmediate): Add definition.
+	(yydoAction): Remove comment, now obsolete.
+	Do YY_REDUCE_PRINT here.
+	(yyglrReduce): Alter comment to indicate that semantic values
+	need not be deferred.
+	Remove YY_REDUCE_PRINT from here; done in yydoAction.
+	(yyprocessOneStack): Pass immediate flag.
+	Delete stacks rejected by predicates in newly split-off parsers.
+	Change handling of yyerr so that only current stack gets deleted
+	when semantic predicate fails.
+	(yyfillin): Don't crash if a semantic value is unresolved (as may
+	happen in predicate rules).
+	Copy lr state as well in debugging mode.
+	Update comment on setting of yysval to include yyloc as well.
+	(yy_reduce_print): Add yynormal argument.  Perform fillin properly.
+	Report unresolved RHS values.
+	(yyimmediate): New table.
+	* src/gram.h (struct rule): Add is_predicate field.
+	* src/output.c (user_actions_output): Use b4_predicate_case for
+	predicates.
+	(prepare_symbols): Output yyimmediate.
+	* src/scan-gram.l: Add %? token, SC_PREDICATE state.
+	* src/scan-code.l (code_props_rule_action_init): Add is_predicate
+	argument.
+	* src/scan-code.h (struct code_props): Add is_predicate field.
+	(code_props_rule_action_init): New interface.
+	* src/parse-gram.y (%?{...}): New token.
+	(rhs): Add %?{...} rule.
+	* src/parse-gram.c: Regenerate.
+	* src/parse-gram.h: Regenerate.
+	* src/reader.c (grammar_current_rule_action_append): Add
+	immediate argument.
+	(grammar_midrule_action): Use new interface for
+	code_props_rule_action_init.
+	(grammar_current_rule_action_append): Ditto.
+	(packgram): Transfer is_predicate value.
+	* src/reader.h (grammar_current_rule_action_append): New interface.
+	* doc/bison.texinfo: Document semantic predicates (%?).
+
+	* data/glr.c (yylhsNonterm, yyisDefaultedState,yyDefaultAction)
+	(yygetLRActions,yynewGLRStackItem,yyaddDeferredAction,yyinitStateSet)
+	(yyinitGLRStack,yyexpandGLRStack,yyupdateSplit,yymarkStackDeleted)
+	(yyundeleteLastStack,yyglrShift,yyglrShiftDefer,yydoAction,yyglrReduce)
+	(yyidenticalOptions,yymergeOptionSets,yyresolveStates,yyresolveAction)
+	(yyresolveLocations,yyresolveValue,yyreducePrint): Update parameter
+	names in comments and mention all parameters.
+	(struct yyGLRState): Fix description of yyposn field.
+	(yyresolveLocations): Correct comment so as not to imply action when
+	yyn1==0.
+
+2010-06-17  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Update from GFDL GFDL 1.2 to 1.3.
+	* doc/bison.texinfo: Update GFDL version number.
+	* doc/fdl.texi: Update to version 1.3, taken from:
+	http://www.gnu.org/licenses/fdl.texi
+
+	Do not use date ranges in copyright notices.
+	See http://www.gnu.org/prep/maintain/maintain.html#Copyright-Notices
+
+	* HACKING, Makefile.am, NEWS, PACKAGING, README, README-alpha:
+	* TODO, bootstrap, bootstrap.conf:
+	* build-aux/update-b4-copyright, cfg.mk, configure.ac:
+	* data/README, data/bison.m4, data/c++-skel.m4, data/c++.m4:
+	* data/c-skel.m4, data/c.m4, data/glr.c, data/glr.cc:
+	* data/java-skel.m4, data/java.m4, data/lalr1.cc:
+	* data/lalr1.java, data/local.mk, data/location.cc:
+	* data/stack.hh, data/variant.hh, data/xslt/bison.xsl:
+	* data/xslt/xml2dot.xsl, data/xslt/xml2text.xsl:
+	* data/xslt/xml2xhtml.xsl, data/yacc.c, djgpp/Makefile.maint:
+	* djgpp/README.in, djgpp/config.bat, djgpp/config.sed:
+	* djgpp/config.site, djgpp/config_h.sed, djgpp/djunpack.bat:
+	* djgpp/local.mk, djgpp/subpipe.c, djgpp/subpipe.h:
+	* djgpp/testsuite.sed, doc/bison.texinfo, doc/local.mk:
+	* doc/refcard.tex, etc/README, etc/bench.pl.in, etc/local.mk:
+	* examples/calc++/Makefile.am, examples/extexi:
+	* examples/local.mk, lib/abitset.c, lib/abitset.h:
+	* lib/bbitset.h, lib/bitset.c, lib/bitset.h:
+	* lib/bitset_stats.c, lib/bitset_stats.h, lib/bitsetv-print.c:
+	* lib/bitsetv-print.h, lib/bitsetv.c, lib/bitsetv.h:
+	* lib/ebitset.c, lib/ebitset.h, lib/get-errno.c:
+	* lib/get-errno.h, lib/lbitset.c, lib/lbitset.h:
+	* lib/libiberty.h, lib/local.mk, lib/main.c, lib/timevar.c:
+	* lib/timevar.def, lib/timevar.h, lib/vbitset.c:
+	* lib/vbitset.h, lib/yyerror.c, m4/bison-i18n.m4:
+	* m4/c-working.m4, m4/cxx.m4, m4/subpipe.m4, m4/timevar.m4:
+	* src/AnnotationList.c, src/AnnotationList.h:
+	* src/InadequacyList.c, src/InadequacyList.h, src/LR0.c:
+	* src/LR0.h, src/Sbitset.c, src/Sbitset.h, src/assoc.c:
+	* src/assoc.h, src/closure.c, src/closure.h, src/complain.c:
+	* src/complain.h, src/conflicts.c, src/conflicts.h:
+	* src/derives.c, src/derives.h, src/files.c, src/files.h:
+	* src/flex-scanner.h, src/getargs.c, src/getargs.h:
+	* src/gram.c, src/gram.h, src/graphviz.c, src/ielr.c:
+	* src/ielr.h, src/lalr.c, src/lalr.h, src/local.mk:
+	* src/location.c, src/location.h, src/main.c:
+	* src/muscle-tab.c, src/muscle-tab.h, src/named-ref.c:
+	* src/named-ref.h, src/nullable.c, src/nullable.h:
+	* src/output.c, src/output.h, src/parse-gram.y:
+	* src/print-xml.c, src/print-xml.h, src/print.c, src/print.h:
+	* src/print_graph.c, src/print_graph.h, src/reader.c:
+	* src/reader.h, src/reduce.c, src/reduce.h, src/relation.c:
+	* src/relation.h, src/scan-code.h, src/scan-code.l:
+	* src/scan-gram.h, src/scan-gram.l, src/scan-skel.h:
+	* src/scan-skel.l, src/state.c, src/state.h, src/symlist.c:
+	* src/symlist.h, src/symtab.c, src/symtab.h, src/system.h:
+	* src/tables.c, src/tables.h, src/uniqstr.c, src/uniqstr.h:
+	* tests/actions.at, tests/atlocal.in, tests/c++.at:
+	* tests/calc.at, tests/conflicts.at, tests/cxx-type.at:
+	* tests/existing.at, tests/glr-regression.at:
+	* tests/headers.at, tests/input.at, tests/java.at:
+	* tests/local.at, tests/local.mk, tests/named-refs.at:
+	* tests/output.at, tests/push.at, tests/reduce.at:
+	* tests/regression.at, tests/sets.at, tests/skeletons.at:
+	* tests/synclines.at, tests/testsuite.at, tests/torture.at:
+	Don't use date ranges in copyright notices.
+
+2010-05-11  Akim Demaille  <demaille@gostai.com>
+
+	lalrl1.cc: give a chance to user defined YYLLOC_DEFAULT.
+	* data/lalr1.cc (YYLLOC_DEFAULT): Move its definition from the
+	header file to the implementation file, after the user %code
+	sections.
+	* NEWS (2.5): Document this.
+
+2010-05-11  Akim Demaille  <demaille@gostai.com>
+
+	doc: please Emacs.
+	* doc/bison.texinfo (Local Variables): Move this after the
+	LocalWords, since the latter are looked for in the whole document,
+	while the former are looked for only at its end.
+	Require american spell checking.
+
+2010-05-10  Akim Demaille  <demaille@gostai.com>
+
+	doc: fix lalr1.cc documentation.
+	* doc/bison.texinfo (C++ Scanner Interface): Fix yylex signature.
+	(C++ Bison Interface): Fix lalr1.cc skeleton name.
+	(C++ Parser Interface): Fix semantic_type and location_type names.
+	Document yy::parser::token.
+	Reported by Jerry Quinn.
+
+2010-05-10  Akim Demaille  <demaille@gostai.com>
+
+	c++: use YYRHSLOC.
+	* data/lalr1.cc (YYRHSLOC): New.
+	(YYLLOC_DEFAULT): Use it.
+	* data/glr.cc: If location_type was user defined, do not include
+	location.hh, and do not produce location.hh and position.hh.
+	* tests/calc.at (YYLLOC_DEFAULT): Use YYRHSLOC.
+	Check that glr.cc supports user defined location_type.
+	* NEWS: Document this.
+
+2010-05-07  Akim Demaille  <demaille@gostai.com>
+
+	doc: fix typo.
+	* tests/synclines.at: here.
+
+2010-05-04  Akim Demaille  <demaille@gostai.com>
+
+	tests: enhance AT_SYNCLINES_COMPILE.
+	* tests/synclines.at (AT_SYNCLINES_COMPILE): More distcc patterns.
+	(AT_TEST_SYNCLINE): Remove GCC 4.5 protection which is already
+	taken care of in AT_SYNCLINES_COMPILE.
+
+2010-05-04  Akim Demaille  <demaille@gostai.com>
+
+	lalr1.cc: don't generate location.hh when location_type is defined
+	* data/bison.m4 (b4_percent_define_get): Accept a default value.
+	* data/c++.m4: Do not provide a default value for the %define
+	variable location_type, rather, use b4_percent_define_get with a
+	default argument where its value is needed.
+	* data/lalr1.cc: Do not load location.cc (which outputs both
+	location.hh and position.hh) if the user defined location_type.
+	Do not include location.hh either.
+
+2010-05-04  Akim Demaille  <demaille@gostai.com>
+
+	lalr1.cc: minor refactoring.
+	* data/lalr1.cc: Don't issue empty namespaces.
+
+2010-05-04  Akim Demaille  <demaille@gostai.com>
+
+	tests: fix %printer.
+	Currently, there is no check that %printer ... <foo> (nor
+	%destructor) is about an existing <foo> type.  This C++ test had
+	it wrong (<::std::string> vs. <std::string>).
+
+	* tests/c++.at (AT_CHECK_VARIANTS): In list.yy, redefine the
+	pretty-printing of lists into something better for parser traces.
+	Update the expected output.
+	Fix correspondance between %type/%token and %printer.
+
+2010-05-04  Akim Demaille  <demaille@gostai.com>
+
+	lalr1.cc: location_type: make sure we don't depend on loc.(begin|end).
+	* tests/calc.at (Span): Instead of begin/end, as in the built-in
+	location class, use first and last.
+	Define YYLLOC_DEFAULT to adjust to these changes.
+	* tests/local.at (_AT_BISON_OPTION_PUSHDEFS): Adjust to the
+	location_type changes.
+
+2010-05-01  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	tests: fix maintainer-xml-check.
+	* data/xslt/xml2dot.xsl (xsl:template match="bison-xml-report"):
+	Update output to include comments now produced by --graph.
+	(xsl:template match="automaton"): As for --graph, name the
+	digraph after the grammar file.
+	* src/print-xml.c (escape_bufs): Enlarge array.
+	(print_xml): Add bug-report and url attributes to
+	bison-xml-report element.
+
+2010-05-01  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	In DOT output, convert from "/*" comments to "//" comments.
+	This handles the possibility that a "*/" might appear in
+	variable portions of those comments at some point in the future.
+	* src/graphviz.c (start_graph): Implement.
+
+2010-04-30  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	Document that undefined %prec identifier warnings will remain.
+	* NEWS (2.4.3): Here.
+	(2.4.2): Here.
+
+2010-04-30  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	Revert 2009-12-30 change for undefined %prec token complaints.
+	That is, keep them as warnings because that should be sufficient
+	to satisfy POSIX without creating backward compatibility issues.
+	Suggested by Richard Stallman at
+	<http://lists.gnu.org/archive/html/bison-patches/2010-03/msg00033.html>.
+	* NEWS (2.5): Remove mention of complaint.
+	* src/reader.c (grammar_rule_check): Convert complaint back to
+	warning.
+	* tests/input.at (%prec's token must be defined): Update.
+
+2010-04-25  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	build: don't require src/bison during bootstrap.
+	Suggested by Eric Blake at
+	<http://lists.gnu.org/archive/html/bug-bison/2010-03/msg00003.html>.
+	* bootstrap.conf (bootstrap_epilogue): New function to make sure
+	src/parse-gram.[ch] are stamped later than src/parse-gram.y.
+
+2010-04-25  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	i18n: fix untranslatable string.
+	Reported by Goran Uddeborg at
+	<http://lists.gnu.org/archive/html/bug-bison/2010-03/msg00000.html>.
+	* src/muscle-tab.c (muscle_percent_define_insert): Here.
+
+2010-04-13  Akim Demaille  <demaille@gostai.com>
+
+	tests: calc: minor refactoring.
+	* tests/calc.at (_AT_DATA_CALC_Y): Simplify yylex.
+
+2010-04-13  Akim Demaille  <demaille@gostai.com>
+
+	tests: calc: simplify location management.
+	* tests/local.at (AT_LOC_PUSHDEF, AT_LOC_POPDEF): New.
+	(_AT_BISON_OPTION_PUSHDEFS, AT_BISON_OPTION_POPDEFS): Use them to
+	define the appropriate AT_LOC accessors.
+	* tests/calc.at: Use AT_LOC accessors.
+
+2010-04-13  Akim Demaille  <demaille@gostai.com>
+
+	test location_type.
+	* tests/local.at (_AT_BISON_OPTION_PUSHDEFS):
+	Define AT_LOCATION_TYPE_IF.
+	(_AT_BISON_OPTION_POPDEFS): Undefine AT_LOCATION_TYPE_IF.
+	* tests/calc.at (_AT_DATA_CALC_Y): When %define location_type is
+	used, provide a user location type and use it.
+	(Simple LALR1 C++ Calculator): Add a test case for location_type.
+
+2010-04-13  Akim Demaille  <demaille@gostai.com>
+
+	tests: check fclose's return value.
+	* tests/calc.at (_AT_DATA_CALC_Y): Check fclose's return status.
+
+2010-04-13  Akim Demaille  <demaille@gostai.com>
+
+	tests: don't depend on the actual location type.
+	* tests/calc.at: Use yy::parser::location_type rather than
+	yy::location, since the former is always right, and might point to
+	another type than the latter.
+
+2010-04-13  Akim Demaille  <demaille@gostai.com>
+
+	formatting changes.
+	* tests/calc.at: Formatting changes.
+
+2010-04-13  Akim Demaille  <demaille@gostai.com>
+
+	lalr1.cc: remove useless forward declaration.
+	* data/lalr1.cc: Include location.hh before stack.hh.
+	Remove the useless forward declarations of position and location.
+	Reported by Chris Morley.
+	* data/glr.cc: Likewise.
+
+2010-04-11  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	* NEWS (2.4.3): Mention fix for Sun Studio C++.
+
+2010-04-10  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	tests: fix for newer Sun Studio C++.
+	Reported by Dagobert Michelsen at
+	<http://lists.gnu.org/archive/html/bug-bison/2010-03/msg00023.html>.
+	* THANKS (Dagobert Michelsen): Add.
+	* configure.ac (AC_PREREQ): Set to 2.64 so we get the latest
+	Autoconf macro for handling the restrict keyword.
+	* gnulib: Update to latest, which no longer overrides that macro
+	from Autoconf.
+
+2010-04-03  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	portability: fix pointer arithmetic to conform to C standard.
+	Reported by Tys Lefering at
+	<http://lists.gnu.org/archive/html/bug-bison/2010-03/msg00035.html>.
+	This fix is already implemented in glr.c and does not apply to
+	lalr1.java.
+	* data/lalr1.cc (yy::parser::parse): Increase size of
+	yyerror_range and adjust subscripting so you don't have to
+	subtract one from the beginning of the array.
+	* data/yacc.c (b4_declare_parser_state_variables,
+	yyparse, yypush_parse): Likewise.
+
+2010-04-05  Akim Demaille  <demaille@gostai.com>
+
+	remove useless include.
+	* src/graphviz.h: Don't include stdbool.h.
+
+2010-04-05  Akim Demaille  <demaille@gostai.com>
+
+	graph: sign the output file.
+	* src/graphviz.c (start_graph): Issue comments about Bison.
+	Suggested by Tys Lefering.
+
+2010-03-31  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	portability: fix test suite for GCC 4.5's new #error message.
+	Reported by Tys Lefering at
+	<http://lists.gnu.org/archive/html/bug-bison/2010-03/msg00030.html>.
+	* NEWS (2.4.3): Mention.
+	* tests/synclines.at (AT_TEST_SYNCLINE): Implement.
+
+2010-03-30  Akim Demaille  <demaille@gostai.com>
+
+	fix comments.
+	* src/graphviz.h: Add missing license notice.
+	Document.
+
+2010-03-25  Akim Demaille  <demaille@gostai.com>
+
+	tests: fix 250: parse.error=verbose overflow.
+	* tests/regression.at (parse.error=verbose overflow): Avoid the
+	double inclusion of stdlib.h as it triggers hard errors.
+
+2010-03-23  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	portability: fix for BSD make.
+	Reported by Johan van Selst at
+	<http://lists.gnu.org/archive/html/bug-bison/2010-03/msg00016.html>.
+	* tests/local.mk ($(TESTSUITE)): Qualify package.m4 in
+	this dependency list as in package.m4's target rule.
+
+2010-03-23  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	portability: fix spawning on at least FreeBSD 8 and FreeBSD 9.
+	Reported by Johan van Selst at
+	<http://lists.gnu.org/archive/html/bug-bison/2010-03/msg00014.html>.
+	* NEWS (2.4.3): New.
+	* THANKS (Johan van Selst): Add.
+	* etc/prefix-gnulib-mk (prefix): Adjust regex for makefile
+	targets so that gnulib's new c++defs.h is matched.
+	* gnulib: Update to latest.
+
+2010-03-20  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	maint: update for changes to gnulib's announce-gen.
+	* HACKING (Announce): RELEASE_TYPE=major must now be written
+	RELEASE_TYPE=stable.
+
+2010-03-20  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Version 2.4.2.
+	* NEWS (2.4.2): Set version and date.  For the recent test suite
+	portability fixes, don't be so optimistic about their success
+	given the lack of feedback on the affected platforms.
+
+2010-02-22  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	tests: fix maintainer-xml-check for recent changes.
+	* tests/output.at (AT_CHECK_CONFLICTING_OUTPUT): Use
+	AT_BISON_CHECK_NO_XML rather than AT_BISON_CHECK because an
+	output file whose name conflicts with a previous output file
+	is now never generated.
+
+2010-02-22  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	portability: fix several issues with M4 subprocess.
+
+	M4's output pipe was not being drained upon fatal errors during
+	scan_skel.  As a result, broken-pipe messages from M4 were seen
+	on at least AIX, HP-UX, Solaris, and RHEL4, and this caused a
+	failure in the test suite.  The problem was that, on platforms
+	where the default disposition for SIGPIPE is ignore instead of
+	terminate, M4 sometimes saw fwrite fail with errno=EPIPE and
+	then reported it.  However, there's some sort of race condition,
+	because the new test group occasionally succeeded.
+	Reported by Albert Chin at
+	<http://lists.gnu.org/archive/html/bug-bison/2010-02/msg00004.html>.
+
+	There were also problems with the test suite livelocking on
+	Tru64 5.1b.  Reported by Didier Godefroy at
+	<http://lists.gnu.org/archive/html/bug-bison/2009-05/msg00005.html>.
+	Switching to create_pipe_bidi suggested by Akim Demaille.
+
+	To attempt to solve both of these problems, switch to gnulib's
+	create_pipe_bidi and register M4 process as a slave.  Along the
+	way, clean up file name conflict handling, which was affected by
+	the broken-pipe problem before the switch.
+	* NEWS (2.4.2): Document.
+	* THANKS (Didier Godefroy): Add.
+	* bootstrap.conf (gnulib_modules): Add pipe.
+	* gnulib: Update to latest to make sure we have all the latest
+	fixes.
+	* lib/local.mk (lib_libbison_a_SOURCES): Remove subpipe.h and
+	subpipe.c.
+	* po/POTFILES.in (lib/subpipe.c): Remove.
+	* src/files.c (compute_output_file_names): Update invocations
+	of output_file_name_check.
+	(output_file_name_check): In the case that the grammar file
+	would be overwritten, use complain instead of fatal, but replace
+	the output file name with /dev/null.  Use the /dev/null solution
+	for the case of two conflicting output files as well because it
+	seems safer in case Bison one day tries to open both files at
+	the same time.
+	* src/files.h (output_file_name_check): Update prototype.
+	* src/output.c (output_skeleton): Use create_pipe_bidi and
+	wait_subprocess.  Assert that scan_skel completely drains the
+	pipe.
+	* src/scan-skel.l (at_directive_perform): Update
+	output_file_name_check invocation.
+	* tests/output.at (AT_CHECK_CONFLICTING_OUTPUT): Check that the
+	grammar file actually isn't overwritten.
+	(Conflicting output files: -o foo.y): Update expected output.
+	* tests/skeletons.at (Fatal errors but M4 continues producing
+	output): New test group.
+
+2010-02-04  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Update POTFILES.
+	* HACKING (Release Procedure): Add reminder about keeping
+	POTFILES files up-to-date.
+	* po/POTFILES.in (src/muscle-tab.c, src/scan-skel.l): Add.
+
+2010-02-01  Joel E. Denny  <jdenny@clemson.edu>
+
+	Code cleanup.
+	* tests/atlocal.in (abs_top_srcdir): Remove shell variable,
+	which is already defined in atconfig.
+
+2010-01-22  Joel E. Denny  <jdenny@clemson.edu>
+
+	tests: fix missing include caught by g++ 4.4.1.
+	Reported by Tys Lefering.
+	* HACKING (Release checks): Add note about trying a recent GCC.
+	* tests/regression.at (_AT_DATA_DANCER_Y): For C++, include
+	cstdlib for abort.
+	(_AT_DATA_EXPECT2_Y): Likewise.
+
+2010-01-21  Joel E. Denny  <jdenny@clemson.edu>
+
+	* cfg.mk (gnulib_dir): Assume gnulib is a subdirectory.
+
+2010-01-21  Joel E. Denny  <jdenny@clemson.edu>
+
+	maint: automate PACKAGE_COPYRIGHT_YEAR update, and update it.
+	* HACKING (Release Procedure): Update notes on copyright years.
+	* Makefile.am (update-package-copyright-year): New target rule.
+	* build-aux/update-package-copyright-year: New file.
+	* cfg.mk (update-copyright): Add update-package-copyright-year
+	as a dependency.
+
+2010-01-19  Joel E. Denny  <jdenny@clemson.edu>
+
+	* bootstrap: Import improvements from latest gnulib.
+
+2010-01-19  Joel E. Denny  <jdenny@clemson.edu>
+
+	build: require Automake 1.11.1 to avoid a security flaw.
+	* HACKING (Release Procedure): Don't document Automake security
+	flaw here.
+	* configure.ac (AM_INIT_AUTOMAKE): Require 1.11.1, and explain
+	why here.
+
+2010-01-19  Joel E. Denny  <jdenny@clemson.edu>
+
+	gnulib: update to latest.
+
+2010-01-19  Joel E. Denny  <jdenny@clemson.edu>
+
+	ChangeLog (2006-09-15): add Odd Arild Olsen's role for push.c.
+
+2010-01-15  Joel E. Denny  <jdenny@clemson.edu>
+
+	Thank the developer of the initial push parser implementation.
+	This unfortunate oversight is several years old.
+	* THANKS (Odd Arild Olsen): Add.
+
+2010-01-04  Joel E. Denny  <jdenny@clemson.edu>
+
+	Fix some comments concerning LR(0) versus LALR(1).
+
+	Stop equating LR(0) with nondeterminism and LALR(1) with
+	determinism.  That is, if all states are consistent, then LR(0)
+	tables are deterministic.  On the other hand, LALR(1) tables
+	might be nondeterministic before conflict resolution, and GLR
+	permits LALR(1) tables to remain nondeterministic.
+	* src/LR0.c, src/LR0.h: Here.
+	* src/lalr.c, src/lalr.h: Here.
+	* src/main.c (main): Here.
+	* src/state.c, src/state.h: Here.
+
+	* src/ielr.h (ielr): In preconditions, expect LR(0) not LALR(1)
+	parser tables.
+
+2010-01-04  Joel E. Denny  <jdenny@clemson.edu>
+
+	maint: run "make update-copyright"
+
+2009-12-30  Joel E. Denny  <jdenny@clemson.edu>
+
+	POSIX: complain if %prec's token was not defined.
+	* NEWS (2.5): Document.
+	* src/reader.c (grammar_rule_check): Convert warning to
+	complaint.
+	* tests/input.at (%prec's token must be defined): Update.
+
+2009-12-30  Joel E. Denny  <jdenny@clemson.edu>
+
+	POSIX: warn if %prec's token was not defined.
+	Reported by Florian Krohm at
+	<http://lists.gnu.org/archive/html/bug-bison/2009-12/msg00005.html>.
+	* NEWS (2.4.2): Document.
+	* src/reader.c (grammar_rule_check): Implement.
+	(grammar_current_rule_prec_set): Add comments explaining that we
+	here assume a %prec identifier is a token, but we still manage
+	to support POSIX.
+	* tests/input.at (%prec's token must be defined): New test
+	group.
+
+2009-12-31  Joel E. Denny  <jdenny@clemson.edu>
+
+	* HACKING (Release Procedure): Recommend a secure automake.
+
+2009-12-29  Joel E. Denny  <jdenny@clemson.edu>
+
+	portability: `<' and `>' are not always defined on addresses.
+	Specifically, don't sort objects by their memory addresses when
+	they're not allocated in the same array or other object.  Though
+	I haven't found a test case where that fails on my platform, C
+	says the behavior is undefined.
+	* src/AnnotationList.c (AnnotationList__insertInto): Remove
+	FIXME.  Use new id field of InadequacyList nodes rather than
+	their memory addresses when sorting.
+	(AnnotationList__compute_from_inadequacies): Add
+	inadequacy_list_node_count argument to pass to
+	InadequacyList__new_conflict.
+	* src/AnnotationList.h
+	(AnnotationList__compute_from_inadequacies): Update prototype
+	and documentation for new argument.
+	* src/InadequacyList.c (InadequacyList__new_conflict): Add
+	node_count argument and use it to assign a unique ID.
+	* src/InadequacyList.h (InadequacyListNodeCount): New typedef.
+	(InadequacyList): Add id field.
+	(InadequacyList__new_conflict): Update prototype and
+	documentation for new argument.
+	* src/ielr.c (ielr_compute_annotation_lists): Update
+	AnnotationList__compute_from_inadequacies invocation.
+
+2009-12-20  Joel E. Denny  <jdenny@clemson.edu>
+
+	Fix handling of yychar manipulation in user semantic actions.
+	The problem was that yacc.c didn't always update the yychar
+	translation afterwards.  However, other skeletons appear to be
+	fine.  glr.c appears to already translate yychar before every
+	use.  lalr1.cc does not define yychar and does not document its
+	replacement, yyla, for users.  It does provide yyclearin, but
+	that does not manipulate yyla and thus requires no translation
+	update.  In lalr1.java, yychar is out of scope during semantic
+	actions.
+	* NEWS (2.5): Document.
+	* data/yacc.c (YYBACKUP): Don't bother translating yychar into
+	yytoken here.
+	(yyparse, yypush_parse): Instead, translate before every use of
+	yytoken, and add comments explaining this approach.
+	* tests/actions.at (Destroying lookahead assigned by semantic
+	action): New test group checking that translation happens before
+	lookahead destructor calls at parser return.  Previously,
+	incorrect destructors were called.
+	* tests/conflicts.at (parse.error=verbose and consistent
+	errors): New test group checking that translation happens at
+	syntax error detection before the associated verbose error
+	message and the associated lookahead destructor calls.  While
+	the destructor call is fixed by this patch, the verbose error
+	message is currently incorrect due to another bug (see
+	comments in test group), so this is an expected failure for now.
+
+2009-12-21  Joel E. Denny  <jdenny@clemson.edu>
+
+	YYFAIL: warn about uses and remove from lalr1.java.
+	* NEWS (2.5): Document.
+	* data/lalr1.java (YYParser::YYFAIL): Rename to YYERRLAB,
+	and make it private.  Update all uses.
+	* src/scan-code.l (SC_RULE_ACTION): Implement warning.
+
+2009-12-21  Joel E. Denny  <jdenny@clemson.edu>
+
+	YYFAIL: deprecate.
+	* NEWS (2.4.2): Document deprecation and the phase-out plan.
+	* data/lalr1.java (YYParser::YYFAIL): Add comment about
+	deprecation.
+	* data/yacc.c (YYFAIL): Likewise, and suppress warnings about
+	YYFAIL from GCC cpp's -Wunused-macros.
+	* doc/bison.texinfo (Java Action Features): Remove YYFAIL
+	documentation.
+	(LocalWords): Remove YYFAIL.
+
+2009-12-20  Joel E. Denny  <jdenny@clemson.edu>
+
+	tests: cleanup.
+	* tests/c++.at (Syntax error discarding no lookahead): Don't
+	ignore stderr.  Instead, eliminate remaining warnings.
+
+2009-12-18  Joel E. Denny  <jdenny@clemson.edu>
+
+	lalr1.cc: don't discard non-existent lookahead on syntax error.
+	* data/lalr1.cc (yy::parser::parse): Check yyempty first.
+	* tests/c++.at (Syntax error discarding no lookahead): New test
+	group.
+
+2009-12-17  Joel E. Denny  <jdenny@clemson.edu>
+
+	Code cleanup.
+	* src/symtab.c, src/symtab.h (symbol_class_get_string): Remove
+	function, which is no longer used.
+
+2009-12-16  Joel E. Denny  <jdenny@clemson.edu>
+
+	Add gcc's -Wundef to test suite and fix another warning from it.
+	* NEWS (2.4.2): Update description of -Wundef fix.
+	* configure.ac (WARN_CXXFLAGS_TEST): New substitution.
+	(WARN_CFLAGS_TEST): New substitution.
+	* data/glr.c: Avoid warning about __STRICT_ANSI__.
+	* tests/atlocal.in (CFLAGS): Use WARN_CFLAGS_TEST instead of
+	WARN_CFLAGS.
+	(NO_WERROR_CFLAGS): Likewise.
+	(CXXFLAGS): Use WARN_CXXFLAGS_TEST instead of WARN_CXXFLAGS.
+
+2009-12-16  Joel E. Denny  <jdenny@clemson.edu>
+
+	* data/yacc.c: Reformat m4 a little.
+
+2009-12-16  Joel E. Denny  <jdenny@clemson.edu>
+
+	Document gcc -Wundef fix.
+	* NEWS (2.4.2): Here.
+	* THANKS (Jonathan Nieder): Add.
+
+2009-12-15  Jonathan Nieder  <jrnieder@gmail.com>  (tiny change)
+
+	Simplify y.tab.c when location tracking is disabled.
+	* data/yacc.c: Do not check YYLTYPE_IS_TRIVIAL if location
+	tracking is not enabled.  Instead, unconditionally define
+	YY_LOCATION_PRINT as a no-op for backward compatibility.
+
+2009-12-15  Jonathan Nieder  <jrnieder@gmail.com>  (tiny change)
+
+	Avoid warnings from gcc -Wundef y.tab.c.
+	* data/glr.c: Check if YYENABLE_NLS and YYLTYPE_IS_TRIVIAL are
+	defined before using them.
+	* data/lalr1.cc: Likewise.
+	* data/yacc.c: Likewise.
+
+2009-12-15  Joel E. Denny  <jdenny@clemson.edu>
+
+	autoconf: update to latest for fix of M4 detection.
+	Reported by Eric Blake.
+	* submodules/autoconf: Update.
+
+2009-12-15  Joel E. Denny  <jdenny@clemson.edu>
+
+	portability: use -DGNULIB_POSIXCHECK.
+	Reported by Eric Blake.  See discussions at
+	<http://lists.gnu.org/archive/html/bug-bison/2009-09/msg00008.html>
+	and
+	<http://lists.gnu.org/archive/html/bug-gnulib/2009-10/msg00108.html>.
+	* HACKING (Release checks): Suggest -DGNULIB_POSIXCHECK.
+	* bootstrap.conf (gnulib_modules): Add all the printf modules
+	suggested by -DGNULIB_POSIXCHECK.  Add realloc-posix as
+	suggested by -DGNULIB_POSIXCHECK for gnulib's own vasnprintf.c.
+	(excluded_files): Remove m4/printf-posix.m4.
+	* tests/atlocal.in (LIBS): As for LDADD in src/local.mk, add
+	lib/libbison.a so gnulib libraries can be linked.
+
+2009-12-15  Joel E. Denny  <jdenny@clemson.edu>
+
+	gnulib: update for fix of fprintf-posix, which we'll use soon.
+	* etc/prefix-gnulib-mk (prefix): Adjust regex for make file
+	targets so that gnulib's new arg-nonnull.h and link-warning.h
+	are matched.
+	* gnulib: Update.
+
+2009-12-14  Joel E. Denny  <jdenny@clemson.edu>
+
+	Enable assertion output and --disable-assert for configure.
+	* bootstrap.conf (gnulib_modules): Add assert module.
+	* src/system.h (aver): Define as assert, and summarize the
+	discussion on this issue.
+
+2009-12-14  Joel E. Denny  <jdenny@clemson.edu>
+
+	Expand GLR acronym in summary of Bison.
+	Based on discussion with Akim Demaille starting at
+	<http://lists.gnu.org/archive/html/bison-patches/2009-04/msg00087.html>.
+	* doc/bison.texinfo (Introduction): Here.
+	* src/getargs.c (usage): Here.
+
+2009-10-03  Alex Rozenman  <rozenman@gmail.com>
+
+	Document named references.
+	* doc/bison.texinfo (Actions): Add new example and xref to
+	Using Named References node.
+	(Using Named References): New node.
+
+2009-10-16  Joel E. Denny  <jdenny@clemson.edu>
+
+	cleanup.
+	* src/Sbitset.c (Sbitset__new_on_obstack): Use Sbitset instead
+	of char*.
+	(Sbitset__isEmpty): Use Sbitset instead of char*.
+	* src/Sbitset.h (Sbitset): Make it a pointer to unsigned char
+	instead of char.  This helps to avoid casting errors.
+	(Sbitset__or): Use Sbitset instead of char*.
+
+2009-10-16  Joel E. Denny  <jdenny@clemson.edu>
+
+	portability: don't assume 8-bit bytes.
+	That is, use CHAR_BIT and UCHAR_MAX instead of 8 and 0xff.
+	* src/Sbitset.h (Sbitset__nbytes): Here.
+	(Sbitset__byteAddress): Here.
+	(Sbitset__bit_mask): Here.
+	(Sbitset__last_byte_mask): Here.
+	(Sbitset__ones): Here.
+	(SBITSET__FOR_EACH): Here.
+
+2009-10-11  Joel E. Denny  <jdenny@clemson.edu>
+
+	portability: use va_start and va_end in the same function.
+	* src/complain.c (error_message): Move va_end from here...
+	(ERROR_MESSAGE): ... to here.
+
+2009-10-08  Joel E. Denny  <jdenny@clemson.edu>
+
+	* data/bison.m4: Update comments for rename to muscle-tab.h.
+
+2009-10-07  Joel E. Denny  <jdenny@clemson.edu>
+
+	Minor code cleanup.
+	* src/muscle-tab.c (MUSCLE_USER_NAME_CONVERT): Remove macro and
+	replace all uses with UNIQSTR_CONCAT.
+	* src/uniqstr.c (uniqstr_vsprintf): New function.
+	* src/uniqstr.h (uniqstr_vsprintf): Add prototype.
+	(UNIQSTR_CONCAT, UNIQSTR_GEN_FORMAT, UNIQSTR_GEN_FORMAT_): New
+	macros.
+
+2009-10-06  Joel E. Denny  <jdenny@clemson.edu>
+
+	* TODO (Complaint submessage indentation): New.
+
+2009-10-04  Joel E. Denny  <jdenny@clemson.edu>
+
+	Minor code cleanup.
+	* src/parse-gram.y: Clean up sorting of declarations.
+	Use types to simplify %printer declarations where possible.
+	Provide %printer for BRACKETED_ID and symbol.prec.
+	* src/symtab.c: Whitespace change.
+
+2009-10-04  Joel E. Denny  <jdenny@clemson.edu>
+
+	tests: skip tests of file names that platform does not support.
+	Reported by Michael Raskin at
+	<http://lists.gnu.org/archive/html/bug-bison/2009-09/msg00001.html>.
+	* THANKS (Michael Raskin): Add.
+	* tests/output.at (AT_CHECK_OUTPUT_FILE_NAME): Fix.  Cygwin used
+	to fail at least for file names containing ":" or "\".
+
+2009-09-23  Joel E. Denny  <jdenny@clemson.edu>
+
+	yysyntax_error: avoid duplicate lookahead collection.
+	Except when memory reallocation is required, this change
+	eliminates the need to invoke yysyntax_error twice and thus to
+	repeat the collection of lookaheads.  It also prepares for
+	future extensions that will make those repetitions more
+	expensive and that will require additional memory management in
+	yysyntax_error.  Finally, it fixes an obscure bug already
+	exercised in the test suite.
+	* data/yacc.c (yysyntax_error): Add arguments for message
+	buffer variables stored in the parser.  Instead of size, return
+	status similar to yyparse status but indicating success of
+	message creation.  Other than the actual reallocation of the
+	message buffer, import and clean up memory management code
+	from...
+	(yyparse, yypush_parse): ... here.
+	* tests/regression.at (parse.error=verbose overflow): No longer
+	an expected failure.
+
+2009-09-23  Joel E. Denny  <jdenny@clemson.edu>
+
+	yysyntax_error: test memory management more.
+	* tests/atlocal.in (NO_WERROR_CFLAGS): New cpp macro.
+	* tests/regression.at (parse.error=verbose and
+	YYSTACK_USE_ALLOCA): New test group.
+	(parse.error=verbose overflow): New test group that reveals an
+	obscure bug.  Expected fail for now.
+
+2009-10-04  Joel E. Denny  <jdenny@clemson.edu>
+
+	benchmarks: use %debug consistently among grammars.
+	* etc/bench.pl.in (generate_grammar_triangular): Do not activate
+	%debug by default.  It can affect the timings even if yydebug=0.
+	(generate_grammar_calc): For consistency with other grammars,
+	use YYDEBUG environment variable to set yydebug.
+
+2009-10-03  Joel E. Denny  <jdenny@clemson.edu>
+
+	Remove dead code.
+	* src/symtab.c (symbol_pack): Here because every symbol's number
+	is always defined by this time.
+
+2009-10-03  Alex Rozenman  <rozenman@gmail.com>
+
+	Add additional space after periods in NEWS.
+	* NEWS (2.5): here.
+
+2009-09-29  Joel E. Denny  <jdenny@clemson.edu>
+
+	Use the correct conversion specifier for size_t.
+	Reported by Jim Meyering.
+	* src/Sbitset.h (SBITSET__INDEX__CONVERSION_SPEC): New, "zu"
+	because Sbitset__Index is size_t.
+	* src/Sbitset.c (Sbitset__fprint): Use it instead of %d.
+
+2009-09-27  Joel E. Denny  <jdenny@clemson.edu>
+
+	tests: don't abuse AT_BISON_CHECK.
+	* tests/regression.at (parse-gram.y: LALR = IELR): Move
+	additional shell commands outside of AT_BISON_CHECK.
+
+2009-09-26  Joel E. Denny  <jdenny@clemson.edu>
+
+	tests: check that parse-gram.y's IELR and LALR are identical.
+	* tests/atlocal.in (abs_top_srcdir): New shell variable.
+	* tests/regression.at (parse-gram.y: LALR = IELR): New test
+	group.
+
+2009-09-19  Alex Rozenman  <rozenman@gmail.com>
+
+	Keep sub-messages aligned. Fix strings for translation.
+	* src/location.h (location_print): Add return value.
+	* src/location.c (location_print): Return number of printed
+	characters.
+	* src/complain.h (complain_at_indent, warn_at_indent): Prototype
+	new functions.
+	* src/complain.cpp (indent_ptr): New static variable.
+	(error_message, complain_at_indent, warn_at_indent): Implement
+	the alignment mechanism.
+	* src/scan-code.l (parse_ref, show_sub_messages): Fix strings
+	for translations. Use new alignment mechanism.
+	* tests/named-ref.at: Adjust test-cases.
+	* NEWS (2.5): Add an announcement about named references.
+
+2009-09-17  Akim Demaille  <demaille@gostai.com>
+
+	doc: fixes.
+	* doc/bison.texinfo: here.
+	Reported by Alex Rozenman.
+
+2009-09-16  Akim Demaille  <demaille@gostai.com>
+
+	doc: lalr1.cc and variants.
+	* doc/bison.texinfo (Decl Summary): Document the "lex_symbol" and
+	"variant" %define variables.
+	(C++ Semantic Values): Split into...
+	(C++ Unions, C++ Variants): these.
+	The latter is new.
+	(C++ Parser Interface): Fix type names.
+	Document parser::syntax_error.
+	Document the fact that locations are not mandatory.
+	(C++ Scanner Interface): Split into...
+	(Split Symbols, Complete Symbols): these.
+	The later is new.
+	(Calc++ Parsing Driver): Use variants.
+	Add more comments.
+	Adjust style.
+	(Calc++ Parser): Declare all the tokens, no
+	longer accept raw characters.
+	Remove %union.
+	Adjust types and printers.
+	Remove destructors.
+	(Calc++ Scanner): Use make_<SYMBOL> functions.
+	Use strerror in error message.
+
+2009-09-16  Akim Demaille  <demaille@gostai.com>
+
+	doc: spell checking.
+	* doc/bison.texinfo: here.
+
+2009-09-16  Akim Demaille  <demaille@gostai.com>
+
+	doc: comment changes.
+	* doc/bison.texinfo: Comment changes.
+
+2009-09-16  Akim Demaille  <demaille@gostai.com>
+
+	lalr1.cc: factor the yytranslate_ invocation in make_SYMBOLS.
+	* data/c++.m4, data/lalr1.cc (parser::symbol_type): Change the
+	constructor to take a token_type instead of the (internal) symbol
+	number.
+	Call yytranslate_.
+	* data/variant.hh (b4_symbol_constructor_define_): Therefore,
+	don't call yytranslate_ here.
+
+2009-09-16  Akim Demaille  <demaille@gostai.com>
+
+	TODO: statistics.
+	* TODO (Figures): New.
+
+2009-09-13  Joel E. Denny  <jdenny@clemson.edu>
+
+	tests: clean up push.at test group titles.
+	* tests/push.at: Remove "Push Parsing: " from test group titles
+	because these are already under the banner "Push Parsing Tests".
+
+2009-09-12  Alex Rozenman  <rozenman@gmail.com>
+
+	Provide an additional sub-message for clarity.
+	Add "symbol not found in production" error message when
+	an "invalid reference" is detected in named references
+	resolution.
+	* src/scan-code.l: Update "invalid reference" case.
+	* tests/named-ref.at: Adjust test-cases.
+
+2009-09-10  Joel E. Denny  <jdenny@clemson.edu>
+
+	Clean up yacc.c a little.
+	* data/yacc.c: Clean up M4 for readability, and make output
+	whitespace more consistent.  For the main parse function
+	comment, instead of saying "yyparse or yypush_parse", say either
+	"yyparse" or "yypush_parse" depending on which it actually is.
+
+2009-09-10  Joel E. Denny  <jdenny@clemson.edu>
+
+	Fix --enable-gcc-warnings.
+	* src/parse-gram.y (%printer <param>): Handle param_none.
+
+2009-09-09  Akim Demaille  <demaille@gostai.com>
+
+	lalr1.cc: syntax_error as exceptions.
+	It is common to use sort of factories in the user actions.  These
+	factories may check some "syntactic" constraints that are not
+	enforced by the grammar itself.  This is possible using YYERROR
+	within the action itself.  Provide the user with a means to throw
+	a syntax_error exception.
+
+	* data/c++.m4 (b4_public_types_declare, b4_public_types_define):
+	Declare and define yy::parser::syntax_error.
+	* data/lalr1.cc: Include stdexcept.
+	(yy::parser::parse): Wrap the user action within a try/catch.
+	* data/glr.cc: Include stdexcept.
+
+2009-09-09  Akim Demaille  <demaille@gostai.com>
+
+	lalr1.cc: add missing "inline".
+	* data/c++.m4 (b4_public_types_define): Add missing inline to
+	implementations provided in headers.
+
+2009-09-09  Akim Demaille  <demaille@gostai.com>
+
+	%param: documentation.
+	* NEWS (2.6): Document %param, %lex-param, and %parse-param
+	changes.
+	* doc/bison.texinfo: Document that %lex-param and %parse-param
+	are n-ary.
+	Changes some examples to demonstrate it.
+	(Calc++ Parser): Use %param.
+
+2009-09-09  Akim Demaille  <demaille@gostai.com>
+
+	Regen.
+
+2009-09-09  Akim Demaille  <demaille@gostai.com>
+
+	style changes.
+	* src/parse-gram.y (add_param): Scope changes.
+
+2009-09-09  Akim Demaille  <demaille@gostai.com>
+
+	%parse: support several arguments.
+	* src/parse-gram.y (current_param): New.
+	(param_type): Add param_none.
+	(params): New nonterminal.
+	Use it.
+
+2009-09-09  Akim Demaille  <demaille@gostai.com>
+
+	Regen.
+
+2009-09-09  Akim Demaille  <demaille@gostai.com>
+
+	%param.
+	Provide a means to factor lex-param and parse-param common
+	declarations.
+
+	* src/parse-gram.y (param_type): New.
+	Define a %printer for it.
+	(add_param): Use it.
+	(%parse-param, %lex-param): Merge into...
+	(%parse): this new token.
+	Adjust the grammar to use it.
+	* src/scan-gram.l (RETURN_VALUE): New.
+	(RETURN_PERCENT_FLAG): Use it.
+	(RETURN_PERCENT_PARAM): New.
+	Use it to support %parse-param, %lex-param and %param.
+
+2009-09-03  Joel E. Denny  <jdenny@clemson.edu>
+
+	Use aver not assert.
+	* src/output.c: Don't include assert.h.
+	(output_skeleton): Use aver not assert.
+	* src/system.h (aver): In documentation of why, add links to
+	Paul Eggert's explanations in the mailing lists.
+
+2009-09-05  Alex Rozenman  <rozenman@gmail.com>
+
+	Use "Unresolved reference" error message when no symbols were found
+	in a symbolic reference resolution. Remove .expr and -expr from
+	the shown reference when the reference is unresolved.
+	* src/scan-code.l: Change the error message, adjust location columns,
+	rename variable "exact_mode" to "explicit_bracketing".
+	* tests/named-ref.at: Adjust existing tests and add a new one.
+
+2009-09-04  Akim Demaille  <demaille@gostai.com>
+
+	Adjust synclines in src/parse-gram.[ch].
+	* tests/bison.in: Do some magic (including working around issues
+	with ylwrap) when this wrapper is used to compile
+	src/parse-gram.y.
+
+2009-09-03  Joel E. Denny  <jdenny@clemson.edu>
+
+	Complain about unused %define variables and %code qualifiers.
+	* NEWS (2.5): Document.
+	* data/bison.m4 (b4_check_user_names): Complain instead of warn.
+	* doc/bison.texinfo (Decl Summary): Document complaint, and
+	improve %define documentation a little otherwise.
+	* tests/input.at (Reject unused %code qualifiers): Update.
+	(%define errors): Update.
+	(%define, --define, --force-define): Update.
+	(%define backward compatibility): Update.
+	(Unused %define api.pure): Update.
+	* tests/push.at (Push Parsing: Unsupported Skeletons): Update.
+
+2009-09-03  Joel E. Denny  <jdenny@clemson.edu>
+
+	Don't suppress warnings about unused parse.error.
+	* data/bison.m4 (b4_error_verbose_flag): Don't examine value of
+	%define variable parse.error unless b4_error_verbose_flag is
+	actually expanded in a skeleton.
+
+2009-09-03  Akim Demaille  <demaille@gostai.com>
+
+	* NEWS (2.4.2): Add "Internationalization" item.
+
+2009-09-03  Akim Demaille  <demaille@gostai.com>
+
+	bootstrap: fix/improve find_tool.
+	* bootstrap (find_tool): Improve error messages.
+	Fix typo about find_tool_names.
+
+2009-08-29  Joel E. Denny  <jdenny@clemson.edu>
+
+	Fix gcc 3.4.4 shadowing warning reported by Eric Blake.
+	See
+	<http://lists.gnu.org/archive/html/bison-patches/2009-08/msg00093.html>.
+	* src/scan-code.h (code_props_rule_action_init): Rename
+	named_ref arg to name so it doesn't shadow named_ref type.  This
+	makes it consistent with the function definition in scan-code.l
+	anyway.
+
+2009-08-28  Joel E. Denny  <jdenny@clemson.edu>
+
+	%define: accept unquoted values.
+	* NEWS (2.5): Group all %define changes together, and document
+	this one.  Remove quotes in IELR and canonical LR entry.
+	* doc/bison.texinfo: Remove quotes in most examples throughout.
+	(Decl Summary): Update %define documentation.
+	(Table of Symbols): Likewise.
+	* src/ielr.c (LrType): Update documentation.
+	* src/parse-gram.y (content.opt): Add production for ID.
+	* tests/actions.at: Remove quotes in most tests.
+	* tests/calc.at: Likewise.
+	* tests/existing.at: Likewise.
+	* tests/input.at: Likewise.
+	* tests/local.at: Likewise.
+	* tests/push.at: Likewise.
+	* tests/reduce.at: Likewise.
+	* tests/torture.at: Likewise.
+
+2009-08-28  Joel E. Denny  <jdenny@clemson.edu>
+
+	%define lr.type: make values lowercase IDs.
+	That is, "LALR" => "lalr", "IELR" => "ielr", and
+	"canonical LR" => "canonical-lr".
+	* NEWS (2.5): Update documentation.
+	* doc/bison.texinfo (Decl Summary): Likewise.
+	* src/ielr.c (ielr): Use new values.
+	* src/ielr.h (ielr): Update documentation.
+	* src/reader.c (prepare_percent_define_front_end_variables): Use
+	and validate new values.
+	* tests/existing.at (AT_TEST_EXISTING_GRAMMAR): Update test
+	grammars.
+	* tests/reduce.at (AT_TEST_LR_TYPE): Likewise.
+
+2009-08-27  Eric Blake  <ebb9@byu.net>
+
+	scan-gram: avoid portability trap with ctype usage.
+	* src/scan-gram.l (<SC_ESCAPED_STRING,SC_ESCAPED_CHARACTER>):
+	Avoid compiler warning.
+
+2009-08-27  Joel E. Denny  <jdenny@clemson.edu>
+
+	tests: use perl for printing special sequences to files.
+	And skip tests if perl is not available.  This is better than
+	playing tricks with shell portability.  Suggested by Akim
+	Demaille.
+	* tests/input.at (Bad character literals): Use it here for
+	omitting final newlines.
+	(Bad escapes in literals): Use it here for special characters.
+
+2009-08-26  Joel E. Denny  <jdenny@clemson.edu>
+
+	tests: show a use of %define lr.default-reductions "consistent"
+	* tests/conflicts.at (%nonassoc and eof): Extend to test that it
+	prevents the omission of expected tokens for %error-verbose.
+
+2009-08-26  Akim Demaille  <demaille@gostai.com>
+
+	tests: portability fix.
+	* tests/input.at (Bad escapes in literals): Don't expect "echo
+	'\0'" to output \ then 0.
+
+2009-08-26  Joel E. Denny  <jdenny@clemson.edu>
+
+	Actually handle the yytable zero value correctly this time.
+	* data/bison.m4 (b4_integral_parser_tables_map): Don't mention
+	zero values in the YYTABLE comments.
+	* data/glr.c (yytable_value_is_error): Don't check for zero
+	value.
+	* data/lalr1.cc (yy_table_value_is_error_): Likewise.
+	* data/yacc.c (yytable_value_is_error): Likewise.
+	* data/lalr1.java (yy_table_value_is_error_): Likewise.
+	(yysyntax_error): Fix typo in code: use yytable_ not yycheck_.
+	* src/tables.h: In header comments, explain why it's useless to
+	check for a zero value in yytable.
+
+2009-08-25  Joel E. Denny  <jdenny@clemson.edu>
+
+	More fixes related to last two patches.
+	* data/bison.m4 (b4_integral_parser_tables_map): Fix YYTABLE
+	comments: zero indicates syntax error not default action.
+	* data/c.m4 (b4_table_value_equals): Comment that YYID must be
+	defined.
+	* data/glr.c (yyis_pact_ninf): Rename to...
+	(yypact_value_is_default): ... this.
+	(yyisDefaultedState): Update for rename.
+	(yyis_table_ninf): Rename to...
+	(yytable_value_is_error): ... this, and check for value zero
+	besides just YYTABLE_NINF.
+	(yygetLRActions): Check for default value from yypact.  It
+	appears that this check is always performed before this function
+	is invoked, and so adding the check here is probably redundant.
+	However, the code may evolve after this subtlety is forgotten.
+	Also, update for rename to yytable_value_is_error.  Because that
+	macro now checks for zero, a different but equivalent branch of
+	the if-then-else here is evaluated.
+	(yyreportSyntaxError): Update for rename to
+	yytable_value_is_error.  The zero condition was mishandled
+	before.
+	(yyrecoverSyntaxError): Update for renames.  No behavioral
+	changes.
+	* data/lalr1.cc, data/lalr1.java (yy_pact_value_is_default_):
+	New function.
+	(yy_table_value_is_error_): New function.
+	(parse): Use new functions where possible.  No behavioral
+	changes.
+	(yysyntax_error_, yysyntax_error): Use yy_table_value_is_error_.
+	The zero condition was mishandled before.
+	* data/yacc.c (yyis_pact_ninf): Rename to...
+	(yypact_value_is_default): ... this.
+	(yyis_table_ninf): Rename to...
+	(yytable_value_is_error): ... this, and check for value zero
+	besides just YYTABLE_NINF.
+	(yysyntax_error): Update for rename to yytable_value_is_error.
+	The zero condition was mishandled before.
+	(yyparse): Update for renames.  No behavioral changes.
+	* src/tables.h: Improve comments about yypact, yytable, etc.
+	more.  Most importantly, say yytable value of zero means syntax
+	error not default action.
+
+2009-08-25  Joel E. Denny  <jdenny@clemson.edu>
+
+	Fix %error-verbose for conflicts resolved by %nonassoc.
+	* NEWS (2.5): Document.
+	* data/glr.c (yyreportSyntaxError): Fix this by checking
+	yyis_table_ninf.
+	* data/yacc.c (yysyntax_error): Likewise.
+	* data/lalr1.cc (yysyntax_error_): Fix this by checking
+	yytable_ninf_.
+	* data/lalr1.java (yysyntax_error): Likewise.
+	* tests/conflicts.at (%nonassoc and eof): Update expected output
+	and remove FIXME.
+
+2009-08-25  Joel E. Denny  <jdenny@clemson.edu>
+
+	Some code and documentation improvements.
+	* data/c.m4 (b4_table_value_equals): New macro to capture
+	some repeated code.
+	* data/glr.c (yyis_pact_ninf): Use it here.
+	(yyis_table_ninf): Likewise.
+	(yyreportSyntaxError): Improve internal comments.
+	* data/yacc.c (yyis_pact_ninf): New macro copied from glr.c.
+	Use it everywhere possible.
+	(yyis_table_ninf): Likewise.
+	(yysyntax_error): Improve internal comments.
+	* data/lalr1.cc (yysyntax_error_): Likewise.
+	* data/lalr1.java (yysyntax_error): Likewise.
+	* src/tables.h: Improve comments about yypact, yytable, etc.
+
+2009-08-21  Joel E. Denny  <jdenny@clemson.edu>
+
+	Use locale when quoting.
+	* src/scan-gram.l (SC_ESCAPED_STRING, SC_ESCAPED_CHARACTER): Use
+	quote rather than implementing quoting here.
+
+2009-08-20  Eric Blake  <ebb9@byu.net>
+
+	Make previous patch more robust.
+	* src/output.c (ARRAY_CARDINALITY): New macro, copied from
+	argmatch.h.
+	(output_skeleton): Use it.
+	Suggested by Akim Demaille.
+
+	Import latest m4/m4.m4.
+	* submodules/autoconf: Update to autoconf 2.64.
+	* configure.ac (M4_GNU_OPTION): New define.
+	* src/output.c (output_skeleton): Use it to resolve FIXME.
+	* NEWS: Mention this.
+
+2009-08-19  Joel E. Denny  <jdenny@clemson.edu>
+
+	Fix complaints about escape sequences.
+	Discussed starting at
+	<http://lists.gnu.org/archive/html/bison-patches/2009-08/msg00036.html>.
+	* src/scan-gram.l (SC_ESCAPED_STRING, SC_ESCAPED_CHARACTER):
+	For a \0 and similar escape sequences meaning the null
+	character, report an invalid escape sequence instead of an
+	invalid null character because the latter does not actually
+	appear in the user's input.
+	In all escape sequence complaints, don't escape the initial
+	backslash, and don't quote when the sequence appears at the end
+	of the complaint line unless there's whitespace that quotearg
+	won't escape.
+	Consistently say "invalid" not "unrecognized".
+	Consistently prefer "empty character literal" over "extra
+	characters in character literal" warning for invalid escape
+	sequences; that is, consistently discard those sequences.
+	* tests/input.at (Bad escapes in literals): New.
+
+2009-08-19  Akim Demaille  <demaille@gostai.com>
+
+	doc: fixes.
+	* doc/bison.texinfo: Fix minor Texinfo errors.
+
+2009-08-19  Akim Demaille  <demaille@gostai.com>
+
+	tests: distcc compliance.
+	* tests/synclines.at (AT_SYNCLINES_COMPILE): Discard distcc's
+	error messages from the output.
+
+2009-08-19  Akim Demaille  <demaille@gostai.com>
+
+	variables: simplify the upgrade of namespace into api.namespace.
+
+	This patch simplifies "variables: rename namespace as
+	api.namespace", commit 67501061076ba46355cfd9f9361c7eed861b389c.
+	Suggested by Joel E. Denny in
+	http://lists.gnu.org/archive/html/bison-patches/2009-07/msg00006.html
+
+	* src/muscle-tab.c (muscle_percent_variable_update): New.
+	(muscle_percent_define_insert): Use it in replacement of the
+	previous tr invocation.
+	Remove variable_tr, no longer needed.
+	* data/bison.m4 (b4_percent_define_copy_, b4_percent_define_copy):
+	Remove.
+	* data/c++.m4: No longer handle namespace -> api.namespace.
+	* tests/input.at (%define backward compatibility): Check that
+	namespace is treated as api.namespace.
+
+2009-08-19  Akim Demaille  <demaille@gostai.com>
+
+	doc: %initial-action to initialize yylloc.
+	Reported by Bill Allombert.
+	* doc/bison.texinfo: Set fill-column to 76.
+	(Location Type): Document the use of %initial-action to initialize
+	yylloc.
+
+2009-08-19  Akim Demaille  <demaille@gostai.com>
+
+	lalr1.cc: use state_type.
+	* data/lalr1.cc (yysyntax_error_): Use state_type.
+	Move argument names into yy*.
+
+2009-08-19  Akim Demaille  <demaille@gostai.com>
+
+	lalr1.cc: get rid of yyparse's yystate.
+	yystate and yystack_[0].state are equal, keep only the latter.
+	The former was also used as a temporary variable to compute the
+	post-reduction state.  Move this computation into an auxiliary
+	function.
+
+	* data/glr.c (yyLRgotoState): Fuse variable definition and first
+	assignment.
+	* data/lalr1.cc (yy_lr_goto_state_): New.
+	(yyparse): Use it.
+	Replace remaining uses of yystate by yystate_[0].state.
+	Remove the former.
+
+2009-08-19  Akim Demaille  <demaille@gostai.com>
+
+	lalr1.cc: destroy $$ when YYERROR is called.
+	* data/lalr1.cc (yyreduce): Compute the resulting state before
+	running the user action so that yylhs is a valid symbol.
+	(yyerrorlab): Since yylhs is complete (it knows its type), we can
+	simply call yy_destroy_ to destroy $$ on YYERROR invocations.
+	* tests/c++.at (AT_CHECK_VARIANTS): Test YYERROR with variants.
+
+2009-08-18  Joel E. Denny  <jdenny@clemson.edu>
+
+	maint: update for gnulib's recent update-copyright changes
+	* gnulib: Update.
+	* .x-update-copyright (COPYING): Add as it's no longer implied
+	when .x-update-copyright is present.
+	* cfg.mk (update-copyright-local): Remove, now ignored.
+	(update-copyright): Declare update-b4-copyright as a dependency.
+
+2009-08-17  Akim Demaille  <demaille@gostai.com>
+
+	build: require gettext 0.17.
+
+	Suggested by Bruno Haible.
+	http://lists.gnu.org/archive/html/bug-bison/2009-08/msg00009.html
+	* configure.ac: require gettext 0.17 to ensure compatibility with
+	gnulib.
+
+2009-08-17  Akim Demaille  <demaille@gostai.com>
+
+	build: lower gettext requirements.
+
+	Bison was uselessly requiring the formatstring macros from
+	gettext, which resulted in mo files not being installed on systems
+	that perfectly supported Bison mo files.  Lower the requirement.
+	http://lists.gnu.org/archive/html/bug-bison/2009-08/msg00006.html
+
+	* configure.ac: Require need-ngettext instead of
+	need-formatstring-macros.
+	Reported by Martin Jabocs.
+	Suggested by Bruno Haible.
+	* INSTALL: Restructure.
+	(Internationalization): New.
+
+2009-08-14  Joel E. Denny  <jdenny@clemson.edu>
+
+	maint: fix use of copyright year intervals.
+	* gnulib: Update.
+	* bootstrap.conf (gnulib_modules): Update getopt to getopt-gnu
+	as now recommended in gnulib/NEWS.
+	* build-aux/update-b4-copyright: Fix.
+	* cfg.mk (update-copyright-env): Configure update-copyright.
+
+2009-08-13  Joel E. Denny  <jdenny@clemson.edu>
+
+	Make it easier to write deterministic tests.
+	Continues Akim's work from his 2009-06-10 commits.
+	* src/reader.c (check_and_convert_grammar): Don't add any
+	symbols after the first symbols_do invocation.
+	* src/symtab.c (symbols_sorted): New static global.
+	(user_token_number_redeclaration): Update comments.
+	(symbol_from_uniqstr): If a new symbol is being created, assert
+	that symbols_sorted hasn't been allocated yet.
+	(symbols_free): Free symbols_sorted.
+	(symbols_cmp, symbols_cmp_qsort): New functions.
+	(symbols_do): Sort symbol_table into symbols_sorted on first
+	invocation.
+	* tests/input.at (Numbered tokens): Recombine tests now that the
+	output should be deterministic across multiple numbers.
+
+2009-08-12  Akim Demaille  <demaille@gostai.com>
+
+	tests: GCC 4.5 compliance.
+	* tests/synclines.at (AT_SYNCLINES_COMPILE): Adjust to GCC 4.5's
+	messages about #error.
+
+2009-08-12  Akim Demaille  <demaille@gostai.com>
+
+	build: fix the generation of the documentation.
+	Some of our targets use "bison --help", but they can't depend on
+	"bison" itself (to avoid additional requirements on the user), so
+	they used to call "make src/bison" in the commands.  Then
+	concurrent builds may fail: one make might be aiming one of its
+	jobs at compiling src/bison, and another job at generating the man
+	page.  If the latter is faster than the former, then we have two
+	makes that concurrently try to compile src/bison.
+
+	This might also be a more convincing explanation for the failure
+	described in the patch "build: fix paths".
+
+	* Makefile.am (SUFFIXES): Initialize.
+	* build-aux/move-if-change: New, symlink to gnulib's.
+	* build-aux/local.mk: Ship it.
+	* doc/common.x: Remove, merged into...
+	* doc/bison.x: here.
+	* doc/local.mk (doc/bison.help): New.
+	($(CROSS_OPTIONS_TEXI)): Depend on it.
+	Use src/bison.
+	(.x.1): Replace with...
+	(doc/bison.1): this explicit, simpler, target.
+	(common_dep): Remove, inlined where appropriate.
+	(SUFFIXES, PREPATH): Remove, unused.
+
+2009-08-12  Akim Demaille  <demaille@gostai.com>
+
+	gnulib: improve prefixing.
+	* configure.ac (gl_PREFIXED_LIBOBJS): Don't rename it, rather,
+	change the value of...
+	(gl_LIBOBJS): this.
+	Adjust more variables.
+	* etc/prefix-gnulib-mk (prefix_assignment): Don't rename
+	gl_LIBOBJS.
+	(prefix): Also transform rules whose targets have slashes.
+	Use $prefix liberally.
+	Map @MKDIR_P@ to $(MKDIR_P).
+	Prefix directories that are mkdir'd.
+
+2009-08-12  Akim Demaille  <demaille@gostai.com>
+
+	build: fix paths.
+	When using $(top_builddir) inconsistently, Make (including GNU
+	Make) is sometimes confused.  As a result it may want to build
+	lib/libbison.la and $(top_builddir)/lib/libbison.la (the same
+	file, different names) concurrently, which, amusingly enough,
+	might end with:
+
+	  ranlib lib/libbison.a
+	  ranlib lib/libbison.a
+	  make[2]: *** [lib/libbison.a] Segmentation fault
+
+	on OS X.
+
+	* doc/local.mk, src/local.mk: Do not use $(top_builddir) when not
+	needed.
+
+2009-08-12  Akim Demaille  <demaille@gostai.com>
+
+	distcheck: fix.
+
+	* examples/calc++/Makefile.am: (EXTRA_DIST): Ship calc.stamp.
+
+2009-08-10  Joel E. Denny  <jdenny@clemson.edu>
+
+	* tests/local.mk (TESTSUITE_AT): Add named-refs.at.
+
+2009-08-10  Joel E. Denny  <jdenny@clemson.edu>
+
+	Miscellaneous code readability improvements.
+
+	* src/reader.c (reader): Move %define front-end variable
+	defaults and checking into...
+	(prepare_percent_define_front_end_variables): ... this new
+	function.
+
+	* src/scan-gram.l (INITIAL): For consistency with string
+	literals, don't store open quote on character literal.  It's
+	discarded before returning anyway.
+	(SC_ESCAPED_CHARACTER): Similarly, don't store close quote.
+	Make length test more readable, and make the character stored
+	for an empty literal more obvious while consistent with the
+	previous behavior.
+
+	* src/symtab.c, src/symtab.h: Rename USER_NUMBER_ALIAS to
+	USER_NUMBER_HAS_STRING_ALIAS throughout.
+	* src/symtab.c (symbol_make_alias): Remove comment from symtab.c
+	that is repeated in symtab.h.  Improve argument names to make it
+	clear which side of the symbol-string alias pair is which.
+	(symbol_check_alias_consistency): Improve local variable names
+	for the same purpose.
+	* src/symtab.h (struct symbol): Make comments about aliases
+	clearer.
+	(symbol_make_alias): Improve comments and argument name.
+	* src/output.c (token_definitions_output): Update for rename to
+	USER_NUMBER_HAS_STRING_ALIAS and improve comments about aliases.
+
+2009-08-08  Alex Rozenman  <rozenman@gmail.com>
+
+	Convert "misleading reference" messages to warnings.
+	* src/scan-code.l: New function 'show_sub_messages', more
+	factoring.
+	* tests/named-ref.at: Adjust tests.
+
+2009-08-06  Joel E. Denny  <jdenny@clemson.edu>
+
+	maint: run "make update-copyright"
+
+2009-08-06  Joel E. Denny  <jdenny@clemson.edu>
+
+	maint: make update-b4-copyright easier to use
+	* build-aux/update-b4-copyright: In warnings, report line
+	numbers rather than character positions.
+	* cfg.mk (update-copyright-local): Set to update-b4-copyright so
+	that update-copyright runs it.
+	* gnulib: Update.
+
+2009-08-05  Joel E. Denny  <jdenny@clemson.edu>
+
+	maint: clean up update-b4-copyright code
+	* build-aux/update-b4-copyright: Do not accept 2-digit
+	UPDATE_COPYRIGHT_YEAR, which was not handled correctly.
+	Don't accept a `[' in a b4_copyright argument.
+	Format code more consistently.
+	Don't assume b4*copyright never occurs.
+
+2009-08-04  Joel E. Denny  <jdenny@clemson.edu>
+
+	maint: automate b4_copyright updates.
+	* Makefile.am (update-b4-copyright): New target rule.
+	* build-aux/local.mk (EXTRA_DIST): Add update-b4-copyright.
+	* build-aux/update-b4-copyright: New.
+	* data/yacc.c: Remove stray characters around b4_copyright
+	invocations.
+
+2009-08-04  Joel E. Denny  <jdenny@clemson.edu>
+
+	maint: automate annual package-wide copyright-year update.
+	* .x-update-copyright: New.
+	* Makefile.am (EXTRA_DIST): Remove maint.mk.
+	* bootstrap.conf (gnulib_modules): Add maintainer-makefile and
+	update-copyright.  Remove gnumakefile, which is implied by
+	maintainer-makefile.
+	* cfg.mk (bootstrap-tools): Copy from old maint.mk.
+	* gnulib: Update.
+	* maint.mk: Remove, now copied from gnulib.
+	* examples/extexi: Add missing "(C)" in copyright statement so
+	update-copyright can recognize it.
+	* src/LR0.h: Likewise.
+	* src/print.h: Likewise.
+	* src/print_graph.h: Likewise.
+	* src/gram.c: Add missing comma in copyright statement.
+	* src/gram.h: Likewise.
+
+2009-08-04  Joel E. Denny  <jdenny@clemson.edu>
+
+	Fix "make distcheck".
+	* examples/calc++/Makefile.am: Say $(srcdir)/calc.stamp instead
+	of just calc.stamp.
+
+2009-08-01  Joel E. Denny  <jdenny@clemson.edu>
+
+	Pacify "gcc -Wunused" for the input function from Flex.
+	Reported by Alex Rozenman.  This warning shows up with gcc-4.3.0
+	and later.
+	* src/scan-code.l: Add "%option noinput", which I cannot find in
+	the Flex manual, but which Flex has supported since at least as
+	far back as 2.5.4.  However, if any of our developers still use
+	Flex 2.5.4, they'll need to stop configuring with
+	--enable-gcc-warnings because "%option noinput" didn't work
+	correctly until Flex 2.5.6.
+	* src/scan-gram.l: Likewise.
+	* src/scan-skel.l: Likewise.
+
+2009-07-31  Alex Rozenman  <rozenman@gmail.com>
+
+	Fix --enable-gcc-warnings problems.
+	* src/reader.c: Adjust variable names.
+	* src/scan-code.l: Fix prototypes and adjust names.
+	* src/named-ref.c: Remove redundant "if".
+
+2009-07-29  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Fix a --enable-gcc-warnings problem.
+	* src/scan-gram.l (SC_ESCAPED_CHARACTER): Actually use length
+	variable.
+
+2009-07-24  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Warn about character literals not of length one.
+	* NEWS (2.5): Document.
+	* src/scan-gram.l (INITIAL): Remove comment that we don't check
+	the length.
+	(SC_ESCAPED_CHARACTER): Warn if length is wrong.
+	* tests/input.at (Bad character literals): New test group.
+
+2009-07-24  Alex Rozenman  <rozenman@gmail.com>
+
+	Fix some memory leaks.
+	* src/named-ref.c: Add a pointer check (named_ref_free).
+	* src/scan-code.l: New function (variant_table_free). Called in
+	code_scanner_free.
+	* src/symlist.c: Call to named_ref_free (symbol_list_free).
+
+2009-07-24  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* src/lalr.c (state_lookahead_tokens_count): Correct comment.
+
+2009-07-22  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Some M4 cleanup in the testsuite.
+	Suggested by Eric Blake at
+	<http://lists.gnu.org/archive/html/bison-patches/2009-04/msg00083.html>.
+	* tests/existing.at (_AT_TEST_EXISTING_GRAMMAR): Do not
+	complicate the code by distinguishing between a missing value
+	and an empty string value for an optional argument.  This fix is
+	allowed by the similar fix in AT_TEST_TABLES_AND_PARSE below.
+	* tests/local.at (_AT_TEST_TABLES_AND_PARSE): Merge into...
+	(AT_TEST_TABLES_AND_PARSE): ... this now that the special
+	arguments are not needed because of the following changes.
+	Fix stale comments.
+	Bison developers should use GNU M4 and should not use
+	POSIXLY_CORRECT when building the test suite, so do not
+	complicate the code by avoiding $10 and above.
+	Do not quote an empty string value for an optional argument, and
+	do not distinguish between a missing value and an empty string
+	value.
+
+2009-07-15  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Revert unnecessary column realignment in --help output.
+	Reported by Akim Demaille at
+	<http://lists.gnu.org/archive/html/bison-patches/2009-06/msg00010.html>.
+	* src/getargs.c (usage): Here.
+
+2009-07-04  Alex Rozenman  <rozenman@gmail.com>
+
+	Alphabetical order in src/local.mk.
+	* src/local.mk: Adjust.
+
+2009-07-04  Alex Rozenman  <rozenman@gmail.com>
+
+	Style changes and factoring.
+	* src/named-ref.h: Add comments.
+	* src/parse-gram.y: Readability and style changes.
+	* src/reader.c: Factoring: assign_named_ref function.
+	* src/scan-code.l: Factoring and style changes. Rename
+	parse_named_ref to parse_ref. Use "c-ctype.h" from gnulib.
+	Use "unsigned" type for variant index. Improve readablity.
+	* src/scan-gram.l: Change error messages and add comments.
+	* src/symlist.h: symbol_list_null: New function decl.
+	* src/symlist.c: symbol_list_null: Implement here.
+	* tests/named-refs.at: Adjust for new error messages.
+
+2009-06-29  Eric Blake  <ebb9@byu.net>
+
+	scan-code: avoid compiler warnings
+	* src/scan-code.l (parse_named_ref): Use correct specifiers.
+
+2009-06-29  Akim Demaille  <demaille@gostai.com>
+
+	build: avoid concurrent extraction of calc++.
+	* examples/calc++/Makefile.am (calc.stamp): New.
+	Depend on it to create the sources of calc++ so that concurrent
+	builds don't launch several "extexi" in parallel.
+	Not only this is inefficient, this also builds incorrect sources
+	with several extractions mixed together.
+
+2009-06-29  Akim Demaille  <demaille@gostai.com>
+
+	parse.error: fix.
+	* data/bison.m4: Move code related to specific variables after the
+	definition of the variable-maintaining macros so that we don't
+	"invoke" b4_percent_define_check_values before it is defined.
+
+2009-06-29  Akim Demaille  <demaille@gostai.com>
+
+	variables: parse.error
+
+	Implement, document, and test the replacement of %error-verbose
+	by %define parse.error "verbose".
+	* data/bison.m4 (b4_error_verbose_if): Reimplement to track the
+	values of the parse.error variable.
+	Make "simple" its default value.
+	Check the valid values.
+	* src/parse-gram.y: Use %define parse.error.
+	(PERCENT_ERROR_VERBOSE): New token.
+	Support it.
+	* src/scan-gram.l: Support %error-verbose.
+
+	* doc/bison.texinfo (Decl Summary): Replace the documentation of
+	%define error-verbose by that of %define parse.error.
+	* NEWS: Document it.
+
+	* tests/actions.at, tests/calc.at: Use parse.error instead of
+	%error-verbose.
+
+2009-06-27  Alex Rozenman  <rozenman@gmail.com>
+
+	Implement support for named symbol references.
+	* src/parse-gram.y: Add new syntax (named_ref.opt).
+	* src/reader.c: Store named refs in symbol lists.
+	* src/reader.h: New argument for symbol_append and
+	action_append functions.
+	* src/scan-code.h: Add new field (named_ref) into
+	code_props data structure. Keeps named ref of midrule
+	actions.
+	* src/scan-code.l: Support for named refs in semantic
+	action code. New function 'parse_named_ref'.
+	* src/scan-gram.l: Support bracketed id.
+	* src/symlist.c: Store named refs in symbol lists.
+	* src/symlist.h: New field in symbol list: named_ref.
+	* src/named-ref.h: New file, a struct for named_ref.
+	* src/named-ref.cp: New file, named_ref_new function.
+	* src/local.mk: Add two new files.
+	* tests/testsuite.at: Include new test group:
+	* tests/named-refs.at: this new file.
+
+2009-06-25  Akim Demaille  <demaille@gostai.com>
+
+	hash: check insertion for memory exhaustion.
+	* src/uniqstr.c (uniqstr_new): New.
+
+2009-06-24  Akim Demaille  <demaille@gostai.com>
+
+	variables: rename namespace as api.namespace.
+	Discussed in
+	http://lists.gnu.org/archive/html/bison-patches/2009-04/msg00033.html
+
+	* data/bison.m4 (b4_percent_define_copy_, b4_percent_define_copy):
+	New.
+	(b4_percent_define_use): New.
+	Use it where applicable.
+	* data/c++.m4: Replace uses of the variable "namespace" by
+	"api.namespace".
+	Default the latter to the former.
+	* doc/bison.texinfo (Decl Summary): Document "namespace" as
+	obsolete.
+	Document api.namespace.
+	Use @samp to document %define uses, keep @code for identifiers.
+	* NEWS: Likewise.
+	* tests/c++.at, tests/input.at: Test api.namespace instead of
+	namespace. (The tests passed with namespace.)
+
+2009-06-11  Akim Demaille  <demaille@gostai.com>
+
+	style changes.
+	* data/xslt/xml2dot.xsl, data/xslt/xml2xhtml.xsl: Space changes.
+	* src/print-xml.c: Style changes.
+	* tests/conflicts.at: Comment changes.
+
+2009-06-11  Akim Demaille  <demaille@gostai.com>
+
+	xml: beware of user strings used to give a %prec to rules.
+	* tests/conflicts.at (%prec with user strings): New.
+	* src/gram.c (grammar_rules_print_xml): Escape the precedence for
+	XML output.
+
+2009-06-11  Akim Demaille  <demaille@gostai.com>
+
+	hash: check insertion for memory exhaustion.
+	* src/muscle-tab.c (muscle_insert, muscle_grow)
+	* src/state.c (state_hash_insert): Check the return value of
+	hash_insert.
+
+2009-06-11  Akim Demaille  <demaille@gostai.com>
+
+	tests: honor TESTSUITEFLAGS in every check target.
+	* tests/local.mk (RUN_TESTSUITE): New.
+	(check-local, installcheck-local, maintainer-check-g++)
+	(maintainer-check-posix, maintainer-check-valgrind): Use it.
+
+2009-06-10  Akim Demaille  <demaille@gostai.com>
+
+	deterministic test suite.
+	Some consistency checks on symbols are performed after all the
+	symbols were read, by an iteration over the symbol table.  This
+	traversal is nondeterministic, which can be a problem for test
+	cases.
+	Avoid this.
+	Addresses another form of nondeterminism reported by Joel E. Denny.
+	http://lists.gnu.org/archive/html/bison-patches/2009-05/msg00023.html
+
+	* tests/input.at (Numbered tokens): Split the hexadecimal/decimal
+	test in two.
+	Use different file names for the three tests to make the
+	maintenance easier.
+
+2009-06-10  Akim Demaille  <demaille@gostai.com>
+
+	gnulib: update.
+	* gnulib: Update to latest.
+	* lib/.cvsignore, lib/.gitignore, m4/.cvsignore,
+	* m4/.gitignore: Regen.
+	* src/symtab.c (symbol_from_uniqstr, semantic_type_from_uniqstr):
+	Call xalloc_die on hash_insert failures.
+	Requested by the new __warn_unused_result__ attribute of
+	hash_insert.
+
+2009-06-10  Akim Demaille  <demaille@gostai.com>
+
+	deterministic user-token-number redeclaration errors.
+	Address nondeterminism reported by Joel E. Denny.
+	http://lists.gnu.org/archive/html/bison-patches/2009-05/msg00023.html
+
+	* src/uniqstr.h: Comment changes.
+	* src/location.h (boundary_cmp, location_cmp): New.
+	* src/symtab.c (user_token_number_redeclaration): New.
+	(symbol_translation): Use it.
+	* tests/input.at (Numbered tokens): Adjust the expected output.
+
+2009-05-25  Akim Demaille  <demaille@gostai.com>
+
+	build: avoid ignored errors.
+	* doc/local.mk ($(CROSS_OPTIONS_TEXI)): Don't generate ignored
+	errors, they pollute the output.
+
+2009-05-22  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Convert multiple variable definition warnings to complaints.
+	* NEWS (2.5): Add a new entry for that change.
+	* doc/bison.texinfo (Decl Summary): Update %define entry.
+	(Bison Options): Update -D/--define/-F/--force-define entry.
+	* src/muscle-tab.c (muscle_percent_define_insert): Implement.
+	* src/muscle-tab.h (muscle_percent_define_insert): Update
+	comments.
+	* tests/input.at (`%define errors'): Update.
+	(`%define, --define, --force-define'): Update.
+
+2009-05-22  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	-F/--force-define and relative %define/-D/--define priorities.
+	* NEWS (2.5): Add documentation to -D/--define entry.
+	* build-aux/cross-options.pl: Hard-code association of
+	--force-define with %define.
+	* doc/bison.texinfo (Decl Summary): In %define entry,
+	cross-reference command-line options.
+	(Bison Options): Add documentation to -D/--define entry.
+	(Option Cross Key): Widen column for --force-define row.
+	* src/getargs.c (usage): Document -F/--force-define.  Realign
+	options in output.
+	(short_options, long_options, getargs): Parse -F/--force-define,
+	and update muscle_percent_define_insert invocations.
+	* src/muscle-tab.h (muscle_percent_define_how): New enum type.
+	(muscle_percent_define_insert): Add argument with that type.
+	* src/muscle-tab.c (muscle_percent_define_insert): Implement
+	-F/--force-define behavior and priorities.
+	(muscle_percent_define_ensure): Update
+	muscle_percent_define_insert invocation.
+	* src/parse-gram.y (prologue_declaration): Update
+	muscle_percent_define_insert invocations.
+	* tests/input.at (`%define, --define'): Rename to...
+	(`%define, --define, --force-define'): ... this and extend.
+
+2009-05-22  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Update some comments to make sense for -D.
+	* data/bison.m4 (b4_check_user_names): In header comments, say
+	"user occurrence" instead of "grammar occurrence".
+	* src/muscle-tab.h (muscle_percent_define_insert): Likewise.
+	(muscle_percent_code_grow): Likewise just for consistency.
+
+2009-05-20  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* data/c++.m4 (b4_namespace_close): Simplify slightly.
+
+2009-05-19  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Handle a trailing `:' in a user-supplied C++ namespace better.
+	* data/c++.m4 (b4_namespace_close): Don't let it be printed
+	among the closing braces here.  This fix might make the
+	generated code easier to debug, but otherwise it should be
+	insignificant because a trailing `:' is a C++ error already.
+
+2009-05-19  Akim Demaille  <demaille@gostai.com>
+
+	remove useless variable.
+	* src/getargs.c (skeleton_arg): Remove now useless variable.
+	Should help the compiler see that this printf-like call is sane.
+
+2009-05-15  Akim Demaille  <demaille@gostai.com>
+
+	Rename token.prefix as api.tokens.prefix.
+	Discussed here.
+	http://lists.gnu.org/archive/html/bison-patches/2009-05/msg00024.html.
+
+	* NEWS, data/bison.m4, data/c.m4, data/java.m4, doc/bison.texinfo,
+	* tests/c++.at, tests/calc.at, tests/java.at, tests/local.at
+	(token.prefix): Rename as...
+	(api.tokens.prefix): this.
+
+2009-05-11  Akim Demaille  <demaille@gostai.com>
+
+	doc: use C++ headers.
+	* doc/bison.texinfo (Calc++ Scanner): Prefer C++ headers to C
+	headers.
+
+2009-05-11  Akim Demaille  <demaille@gostai.com>
+
+	doc: token.prefix
+	* doc/bison.simple (Decl Summary): Document token.prefix.
+	(Calc++ Parser): Various fixes.
+	Formatting changes.
+	Use token.prefix.
+	Introduce a macro TOKEN to shorten the code and make it more
+	readable.
+	(Calc++ Scanner): Adjust.
+	* NEWS (Variable token.prefix): New.
+
+2009-05-04  Akim Demaille  <demaille@gostai.com>
+
+	bison: catch bad symbol names.
+	* src/scan-gram.l({int}{id}): Report as an invalid identifier.
+	* tests/input.at: Adjust.
+
+2009-05-04  Akim Demaille  <demaille@gostai.com>
+
+	identifiers: dashes are letters.
+	Dashes can now start identifiers (symbols and directives).
+
+	* src/scan-gram.l ({letter}): Add dash.
+	({id}): Remove it.
+	* tests/input.at (Symbols): Adjust.
+	Remove stray comment.
+	* tests/regression.at (Invalid inputs): Adjust error message.
+	* doc/bison.texinfo (Symbols): Update.
+
+2009-05-01  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Declare %code to be a permanent feature.
+	* NEWS (2.4.2): Here.
+	* doc/bison.texinfo (Prologue Alternatives): Don't say it's
+	experimental.
+	(Decl Summary): Likewise.
+
+2009-04-30  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Convert underscores to dashes in some %define variable names.
+	For now, just api.push-pull and lr.keep-unreachable-states.
+	Maintain old names for backward compatibility.
+	* NEWS (2.5): Document.
+	* data/c.m4 (b4_identification): Update comment.
+	* data/yacc.c: Update access.
+	* doc/bison.texinfo: Update.
+	* etc/bench.pl.in (bench_push_parser): Update use.
+	* src/files.c (tr): Move to...
+	* src/getargs.c, src/getargs.h (tr): ... here because I can't
+	think of a better place to expose it.  My logic is that, for all
+	uses of tr so far, command-line arguments can be involved, and
+	getargs.h is already included.
+	* src/main.c (main): Update access.
+	* src/muscle_tab.c (muscle_percent_define_insert): Convert old
+	variable names to new variable names before assigning value.
+	* src/reader.c (reader): Update setting default.
+	* tests/calc.at: Update uses.
+	* tests/conflicts.at (Unreachable States After Conflict
+	Resolution): Update use.
+	* tests/input.at (%define enum variables): Update use.
+	(%define backward compatibility): New test group.
+	* tests/push.at: Update uses.
+	* tests/reduce.at: Update uses.
+	* tests/torture.at: Update uses.
+
+2009-04-30  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Set all front-end %define defaults in one place.
+	* src/main.c (main): Move lr.keep_unreachable_states default...
+	* src/reader.c (reader): ... to here.
+
+2009-04-29  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Rename lr.default_reductions to lr.default-reductions.
+	* NEWS (2.5): Here.
+	* doc/bison.texinfo: Here.
+	* src/lalr.c (initialize_LA): Here.
+	* src/print.c (print_reductions): Here.
+	* src/reader.c (reader): Here.
+	* src/tables.c (action_row): Here.
+	* tests/input.at (%define enum variables): Here.
+	* tests/reduce.at (AT_TEST_LR_DEFAULT_REDUCTIONS): Here.
+
+2009-04-29  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Pacify ./configure --enable-gcc-warnings.
+	* tests/input.at (Symbols): Prototype yyerror and yylex.
+
+2009-04-29  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Document how `%define "var" "value"' is not M4-friendly.
+	* src/parse-gram.y (variable): In comments here.
+
+2009-04-24  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Clean up recent patches a little.
+	Reported by Akim Demaille.
+	* doc/bison.texinfo (Understanding): Fix typos.
+	* src/print.c (print_reductions): Don't use negated variable.
+
+2009-04-24  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	List accepted values for a %define enum variable with an invalid value.
+	Suggested by Akim Demaille at
+	<http://lists.gnu.org/archive/html/bison-patches/2009-04/msg00082.html>.
+	* data/bison.m4 (_b4_percent_define_check_values): Implement.
+	* src/muscle-tab.c (muscle_percent_define_check_values): Implement.
+	* tests/input.at (%define lr.default_reductions invalid values): Merge
+	into...
+	(%define enum variables): ... here, and update output.
+
+2009-04-23  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Rename "default rule" to "default reduction".
+	This includes changing variable names in code, changing
+	comments, and renaming %define lr.default_rules to %define
+	lr.default_reductions.
+	* NEWS (2.5): Update IELR documentation.
+	* data/bison.m4 (b4_integral_parser_tables_map): Adjust YYDEFACT
+	documentation.
+	* data/glr.c, data/lalr1.java: Sync copyright dates.
+	* doc/bison.texinfo (Decl Summary): Adjust lr.default_reductions
+	and lr.type documentation.  Make some other wording
+	improvements.
+	(Glossary): Adjust cross-references and Default Reduction
+	definition.
+	* src/lalr.c (state_lookahead_tokens_count): Adjust code.
+	Remove a confusing comment pointed out by Akim Demaille.
+	(initialize_LA): Adjust code.
+	* src/print-xml.c (print_reductions): Adjust code.
+	* src/print.c (print_reductions): Adjust code.
+	* src/reader.c (reader): Adjust code.
+	* src/tables.c (action_row): Adjust code.
+	(token_actions): Adjust code.
+	* src/tables.h: Adjust YYDEFACT documentation.
+	* tests/input.at (%define lr.default_rules invalid values):
+	Rename test group to...
+	(%define lr.default_reductions invalid values): ... this, and
+	update grammar file and expected output.
+	* tests/reduce.at (AT_TEST_LR_DEFAULT_RULES): Rename to...
+	(AT_TEST_LR_DEFAULT_REDUCTIONS): ... this, and update.
+
+2009-04-21  Akim Demaille  <demaille@gostai.com>
+
+	tests: check the use of dashes and periods in symbols.
+	* tests/input.at (Symbol): New test group.
+
+2009-04-21  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Document %define lr.type and lr.default_rules.
+	* NEWS (2.5): Add an entry.
+	* src/getargs.c (usage): Mention IELR(1) and canonical LR(1)
+	besides just LALR(1) and GLR(1).
+	* doc/bison.texinfo (Introduction): Likewise.
+	(Language and Grammar): Bison is no longer limited to LALR(1)
+	restrictions.
+	(GLR parsing): Say deterministic or LR(1) rather than LALR(1)
+	when trying to distinguish from GLR.  Talk about LR(1) grammars
+	rather than LALR(1) grammars.
+	(Decl Summary): In %define api.push_pull entry, say it applies
+	to deterministic parsers in C rather than LALR(1) parsers in C.
+	Add lr.default_rules entry.
+	Add lr.type entry.
+	(Mystery Conflicts): Bison is no longer limited to LALR(1)
+	restrictions.
+	(Generalized LR Parsing): Same changes as for the previous GLR
+	section.
+	(Memory Management): Say deterministic rather than LALR(1).
+	(Understanding): Correct some bison output.
+	Index discussion of "accepting state".
+	Say deterministic rather than LALR(1).
+	(Bison Options): In --yacc entry, say deterministic rather than
+	LALR(1).
+	In --report, --graph, and --xml entries, just don't mention
+	LALR(1).
+	(C++ Parsers): Say deterministic rather than LALR(1).
+	(Table of Symbols): Likewise in YYSTACK_USE_ALLOCA entry.
+	(Glossary): Add Accepting State, Consistent State, Default Rule,
+	and IELR(1) definitions.
+	In Generalized LR (GLR) definition, make same changes as in
+	previous GLR sections.
+	In LALR(1) definition, say Bison uses LALR(1) by default rather
+	than implying Bison is limited to LALR(1).
+	(LocalWords): Add IELR.
+
+2009-04-21  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Finish implementing %define lr.type.
+	Its value can be "LALR", "IELR", or "canonical LR".
+	* lib/timevar.def (TV_IELR_PHASE1): New var.
+	(TV_IELR_PHASE2): New var.
+	(TV_IELR_PHASE3): New var.
+	(TV_IELR_PHASE4): New var.
+	* src/Makefile.am (bison_SOURCES): Add AnnotationList.c,
+	AnnotationList.h, InadequacyList.c, InadequacyList.h, Sbitset.c,
+	Sbitset.h, ielr.h, and ielr.c.
+	* src/getargs.h, src/getargs.c (enum trace, trace_args,
+	trace_types): Add trace_ielr.
+	* src/lalr.h, src/lalr.c (ngotos): Export it.
+	(F): Rename to...
+	(goto_follows): ... this, update all uses, and export it.
+	(set_goto_map): Export it.
+	(map_goto): Export it.
+	(compute_lookahead_tokens): Don't free goto_follows yet.  Now
+	handled in ielr.
+	(initialize_LA): Export it.  Move lookback allocation to...
+	(lalr): ... here because, for canonical LR, initialize_LA must
+	be invoked but lookback and much of the rest of LALR isn't
+	needed.
+	* main.c (main): Instead of lalr, invoke ielr, which invokes
+	lalr.
+	* src/reader.c (reader): Default lr.type to "LALR".
+	Default lr.default_rules to "accepting" if lr.type is "canonical
+	LR".  Leave the default as "all" otherwise.
+	Check for a valid lr.type value.
+	* src/state.h, src/state.c (struct state_list): Add state_list
+	member.
+	(state_new): Initialize state_list member to NULL.
+	(state_new_isocore): New function, exported.
+	* tests/existing.at (AT_TEST_EXISTING_GRAMMAR): New macro that
+	exercises all values of lr.type.
+	(GNU AWK Grammar): Rename test group to...
+	(GNU AWK 3.1.0 Grammar): ... this, and extend to use
+	AT_TEST_EXISTING_GRAMMAR.
+	(GNU Cim Grammar): Extend to use AT_TEST_EXISTING_GRAMMAR.
+	(GNU pic Grammar): Rename test group to...
+	(GNU pic (Groff 1.18.1) Grammar): ... this, and extend to use
+	AT_TEST_EXISTING_GRAMMAR.
+	* tests/reduce.at (AT_TEST_LR_TYPE): New macro that exercises
+	all values of lr.type.
+	(Single State Split): New test groups using AT_TEST_LR_TYPE.
+	(Lane Split): Likewise.
+	(Complex Lane Split): Likewise.
+	(Split During Added Lookahead Propagation): Likewise.
+
+2009-04-21  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Add new files for IELR and canonical LR implementation.
+	* src/AnnotationList.c: New.
+	* src/AnnotationList.h: New.
+	* src/InadequacyList.c: New.
+	* src/InadequacyList.h: New.
+	* src/Sbitset.c: New.
+	* src/Sbitset.h: New.
+	* src/ielr.c: New.
+	* src/ielr.h: New.
+
+2009-04-20  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Implement %define lr.default_rules.
+	Its value describes the states that are permitted to contain
+	default rules: "all", "consistent", or "accepting".
+	* src/reader.c (reader): Default lr.default_rules to "all".
+	Check for a valid lr.default_rules value.
+	* src/lalr.c (state_lookahead_tokens_count): If lr.default_rules
+	is "accepting", then only mark the accepting state as
+	consistent.
+	(initialize_LA): Tell state_lookahead_tokens_count whether
+	lr.default_rules is "accepting".
+	* src/tables.c (action_row): If lr.default_rules is not "all",
+	then disable default rules in inconsistent states.
+	* src/print.c (print_reductions): Use this opportunity to
+	perform some assertions about whether lr.default_rules was
+	obeyed correctly.
+	* tests/local.at (AT_TEST_TABLES_AND_PARSE): New macro that
+	helps with checking the parser tables for a grammar.
+	* tests/input.at (%define lr.default_rules invalid values): New
+	test group.
+	* tests/reduce.at (AT_TEST_LR_DEFAULT_RULES): New macro using
+	AT_TEST_TABLES_AND_PARSE.
+	(`no %define lr.default_rules'): New test group generated by
+	AT_TEST_LR_DEFAULT_RULES.
+	(`%define lr.default_rules "all"'): Likewise.
+	(`%define lr.default_rules "consistent"'): Likewise.
+	(`%define lr.default_rules "accepting"'): Likewise.
+
+2009-04-20  Akim Demaille  <demaille@gostai.com>
+
+	Formatting change.
+
+2009-04-20  Akim Demaille  <demaille@gostai.com>
+
+	bison: factoring.
+	* src/output.c (token_definitions_output): Use symbol_id_get
+	instead of duplicating its logic.
+	* TODO (YYERRCODE): Extend.
+
+2009-04-20  Akim Demaille  <demaille@gostai.com>
+
+	variables: prefer error-verbose to error_verbose.
+	* data/bison.m4 (b4_error_verbose_if): Based on error-verbose
+	instead of error_verbose.
+	* src/scan-gram.l (%error-verbose): Map to the error-verbose
+	variable.
+	* doc/bison.texinfo: Promote %define error-verbose instead of
+	%error-verbose.
+	* tests/actions.at: Prefer %define error-verbose to %error-verbose.
+
+2009-04-15  Akim Demaille  <demaille@gostai.com>
+
+	variables: accept dashes.
+	* data/bison.m4 (b4_percent_define_if_define_): Also map dashes to
+	underscores.
+	* src/scan-gram.l ({id}): Also accept dashes after the initial
+	letter.
+	({directive}): Use {id}.
+	* src/parse-gram.y: Comment and formatting changes.
+	* doc/bison.texinfo (Symbols): Adjust the lexical definitions of
+	symbols.
+	* src/complain.h, src/complain.c (yacc_at): New.
+	* src/symtab.c (symbol_new): Use yacc_at to report inappropriate
+	symbol names.
+	* src/output.c (token_definitions_output): Do not #define token
+	names with dashes.
+
+2009-04-20  Akim Demaille  <demaille@gostai.com>
+
+	Consistently refer to Yacc, not YACC.
+	* src/getargs.c (usage, warnings_args): s/YACC/Yacc/.
+
+2009-04-17  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Pacify make maintainer-check-posix.
+	* tests/input.at (%define, --define): Move bison command-line
+	options before grammar file name.
+
+2009-04-04  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Document semicolon warnings.
+	* NEWS (2.5): Here.
+
+2009-04-14  Akim Demaille  <demaille@gostai.com>
+
+	variables: use `parse.assert' instead of `assert'.
+	* TODO (assert): Remove.
+	* data/bison.m4 (b4_assert_if): Replace with...
+	(b4_parse_assert_if): this.
+	* data/lalr1.cc, data/variant.hh, tests/c++.at: Adjust.
+	* doc/bison.texinfo (Decl Summary): Document parse.assert.
+
+2009-04-14  Akim Demaille  <demaille@gostai.com>
+
+	variables: use `parse.trace' instead of `debug'.
+	* src/getargs.c (getargs): Map -t to %define trace.parse.
+	* src/scan-gram.l (%debug): Map to %define trace.parse.
+	* data/bison.m4 (b4_percent_define_if_define): Map `.' in variable
+	names to `_' in macro names.
+	(b4_debug_if): Replace with...
+	(b4_parse_trace_if): this.
+	* data/glr.c, data/glr.cc, data/lalr1.cc, data/lalr1.java,
+	* data/yacc.c: Adjust.
+	* doc/bison.texinfo (Decl Summary): Document %debug as obsoleted.
+	Use @code to label the variable list.
+	Document the variable parse.trace.
+	(Tracing): Promote the parse.trace variable.
+	* TODO: %printer is not documented.
+
+2009-04-14  Akim Demaille  <demaille@gostai.com>
+
+	doc: minor fixes.
+	* doc/bison.texinfo (Decl Summary): Fix entry about %debug.
+	(Table of Symbols): Remove duplicate entry for %debug.
+
+2009-04-10  Eric Blake  <ebb9@byu.net>
+
+	submodules: update to latest
+	* submodules/autoconf: Use latest upstream Autoconf.
+
+2009-04-06  Eric Blake  <ebb9@byu.net>
+
+	Work around autoconf 2.63b bug in testsuite.
+	* tests/output.at (AT_CHECK_OUTPUT_FILE_NAME): Avoid tripping
+	autoconf bug related to # in test.
+
+2009-04-06  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* NEWS (2.5): New section.  Describe new -D/--define feature.
+
+2009-04-06  Akim Demaille  <demaille@gostai.com>
+
+	Regen.
+	* src/parse-gram.h, src/parse-gram.c: Regen.
+
+2009-04-06  Akim Demaille  <demaille@gostai.com>
+
+	rename muscle_tab.* as muscle-tab.* for consistency.
+	* src/muscle_tab.h, src/muscle_tab.c: Rename as...
+	* src/muscle-tab.h, src/muscle-tab.c: these.
+	* src/getargs.c, src/local.mk, src/main.c, src/output.c,
+	* src/parse-gram.y, src/reader.c, src/scan-code.l: Adjust.
+
+2009-04-06  Akim Demaille  <demaille@gostai.com>
+
+	Makefile: introduce $(BISON).
+	* src/local.mk (BISON): New.
+	(YACC): Use it.
+
+2009-04-06  Akim Demaille  <demaille@gostai.com>
+
+	parser: handle %locations as %define locations.
+	* src/getargs.h, src/getargs.c (locations_flag): Remove.
+	* src/getargs.c, src/scan-code.l: Use muscle_percent_define_ensure
+	to set "locations" to true.
+	* src/output.c (prepare): Don't output "locations".
+	* src/scan-gram.l (%locations): Handle it as a %<flag>.
+	* src/parse-gram.y: It's no longer a token.
+	Don't handle it.
+	* data/bison.m4 (b4_locations_if): Define it with
+	b4_percent_define_if_define.
+	* data/c.m4, data/glr.cc: Adjust.
+
+2009-04-06  Akim Demaille  <demaille@gostai.com>
+
+	Regen.
+	* src/parse-gram.c: Regen.
+
+2009-04-06  Akim Demaille  <demaille@gostai.com>
+
+	muscle: factor the handling of obsolete of obsolete directives.
+	Suggested by Joel E. Denny.
+
+	* src/muscle_tab.h, src/muscle_tab.c (muscle_percent_define_ensure):
+	New, extracted from...
+	* src/parse-gram.y (prologue_declaration: pure-parser): here.
+	Remove it.
+	(prologue_declaration: "%<flag>"): Use
+	muscle_percent_define_ensure.
+	(%error-verbose, %pure-parser): No longer tokens.
+	* src/scan-gram.l (pure-parser): Return as a %<flag>.
+
+2009-04-06  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Fix options documentation.
+	* build-aux/cross-options.pl: As in --help output, write optional
+	arguments as [=ARG] not =[ARG].
+	* doc/bison.texinfo (Bison Options): Add -W/--warnings argument.
+
+2009-04-04  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Replace BISON_PROG_GNU_M4 with Autoconf's AC_PROG_GNU_M4.
+	If the first m4 in $PATH is wrong, it keeps looking.  Moreover, its
+	requirements for a correct m4 are stricter.
+	* m4/m4.m4: Make it a symbolic link to submodules/autoconf/m4/m4.m4.
+	* configure.ac: Update to use AC_PROG_GNU_M4.
+	Reported by Eric Blake.
+
+2009-04-03  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Help with updating web manual.
+	* HACKING: Incorporate instructions from gnulib/doc/README.
+	* bootstrap.conf (gnulib_modules): Add gendocs.
+
+2009-04-03  Akim Demaille  <demaille@gostai.com>
+
+	Regen.
+	* src/parse-gram.h, src/parse-gram.c: Regen.
+
+2009-04-03  Akim Demaille  <demaille@gostai.com>
+
+	Factor %FLAG at scan level.
+	* src/parse-gram.y (PERCENT_DEBUG, PERCENT_ERROR_VERBOSE): Token
+	definitions and associated rules, replaced by....
+	(PERCENT_FLAG): this new token type, and rule.
+	* src/scan-gram.l (RETURN_PERCENT_FLAG): New.
+	Use it for %debug and %error-verbose.
+
+2009-04-03  Akim Demaille  <demaille@gostai.com>
+
+	Regen.
+	* src/parse-gram.h, src/parse-gram.c: Regen.
+
+2009-04-03  Akim Demaille  <demaille@gostai.com>
+
+	Treat %debug as %define debug.
+	* data/bison.m4 (b4_debug_if): New.
+	* data/glr.c, data/glr.cc, data/lalr1.cc, data/yacc.c,
+	* data/lalr1.java: Use it instead of b4_debug_flag.
+	* src/getargs.h, src/getargs.c (debug_flag): Remove.
+	* src/output.c (prepare): Don't output it.
+	* src/parse-gram.y: Treat %debug as %define debug.
+
+2009-04-03  Akim Demaille  <demaille@gostai.com>
+
+	Treat %error-verbose as %define error_verbose.
+	This allows to pass -Derror_verbose on the command line.  Better
+	yet, it allows to pass -Derror_verbose=$(ERROR_VERBOSE), with
+	ERROR_VERBOSE being defined as false or true.
+	* data/bison.m4 (b4_percent_define_if_define): Instead of relying
+	on b4_percent_define_ifdef, for does not check the defined value,
+	but only whether the symbol is defined, rely on
+	b4_percent_define_flag_if, so that a value of "false" is processed
+	as a false.
+	If not defined, define the flag to "false".
+	(b4_error_verbose_if): New.
+	* data/glr.c, data/lalr1.cc, data/yacc.c: Use it instead of
+	b4_error_verbose_flag.
+	* src/getargs.h, src/getargs.c (error_verbose_flag): Remove.
+	* src/output.c (prepare): Don't output it.
+	* src/parse-gram.y (%error-verbose): Treat as %define error_verbose.
+
+2009-04-03  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Fix strange %define locations for default values.
+	Reported by Akim Demaille at
+	<http://lists.gnu.org/archive/html/bug-bison/2007-12/msg00001.html>
+	and discussed again starting at
+	<http://lists.gnu.org/archive/html/bison-patches/2008-11/msg00102.html>.
+	* data/bison.m4 (b4_percent_define_default): Leave syncline blank
+	because location information is bogus.
+	Use angle brackets to delimit fake file name because square brackets
+	look like underexpanded m4.  Choose a better fake file name.
+	Use negative line numbers.
+	* src/muscle_tab.c (muscle_percent_define_default): Likewise.
+	* src/location.c (location_print): If line for a boundary is negative,
+	only print that boundary's file name.
+	* src/location.h: Document that.
+	* tests/skeletons.at (%define Boolean variables: invalid skeleton
+	defaults): Update output.
+
+2009-04-03  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Pacify ./configure --enable-gcc-warnings.
+	* Makefile.am (AM_CFLAGS): Remove $(WERROR_CFLAGS) because many files
+	in lib won't compile with it.
+	* src/local.mk (src_bison_CFLAGS): Use $(WERROR_CFLAGS) here only.
+
+2009-03-31  Akim Demaille  <demaille@gostai.com>
+
+	bootstrap: --help to stdout.
+	* bootstrap (usage): Don't send --help to stderr.
+	Use a here doc instead of a long string.
+
+2009-03-31  Akim Demaille  <demaille@gostai.com>
+
+	bootstrap: README-hacking no longer exists
+	* bootstrap (checkout_only_file): Set to HACKING.
+
+2009-03-26  Akim Demaille  <demaille@gostai.com>
+
+	doc: merge HACKING and README-hacking.
+	Two files is confusing.
+	Reported by Alexandre Duret-Lutz.
+
+	* README-hacking: Merge into...
+	* HACKING (Working from the repository): here.
+
+2009-03-26  Akim Demaille  <demaille@gostai.com>
+
+	doc: update README-hacking.
+	* README-hacking: We now use git and git submodules.
+	Reported by Ralf Wildenhues and Alexandre Duret-Lutz.
+
+2009-03-26  Akim Demaille  <demaille@gostai.com>
+
+	lalr1.cc: avoid GCC 4.3 warnings.
+	GCC 4.3 now warns about "a || b && c" and asks for explicit
+	parentheses.
+	Reported by Alexandre Duret-Lutz.
+	* data/location.cc: Update copyright years.
+	(Position::operator==): Use parens to make precedence explicit.
+	Compare lines and columns first, as they are more likely to be
+	different, and they are faster to compare.
+
+2009-03-26  Akim Demaille  <demaille@gostai.com>
+
+	gnulib: update.
+	* gnulib: Update to latest.
+	* src/local.mk (AM_CFLAGS): Move to...
+	* Makefile.am: here.
+	* etc/prefix-gnulib-mk (prefix_assignment): Also transform
+	AM_CFLAGS.
+
+2009-03-02  Akim Demaille  <demaille@gostai.com>
+
+	Comment changes.
+
+2009-03-02  Akim Demaille  <demaille@gostai.com>
+
+	Share b4_yytranslate_define.
+	* data/lalr1.cc (b4_yytranslate_define): Move to...
+	* data/c++.m4: here.
+
+2009-03-02  Akim Demaille  <demaille@gostai.com>
+
+	Use locations in the variant example.
+	Yes, this obfuscates the point of this example, variants only.
+	But glr.cc cannot work (yet?) without locations.  This change
+	makes it easier to use this example with glr.cc.
+
+	* examples/variant.yy (assert): %define it.
+	(locations): Request them.
+	(yylex): Bind the location to the stage.
+
+2009-03-02  Akim Demaille  <demaille@gostai.com>
+
+	Dub make_TOKEN as a public type interface.
+	* data/c++.m4 (b4_symbol_constructor_declare)
+	(b4_symbol_constructor_define): New empty stubs.
+	(b4_public_types_declare, b4_public_types_define): Use them.
+	* data/lalr1.cc (b4_symbol_constructor_declare)
+	(b4_symbol_constructor_declare_)
+	(b4_symbol_constructor_define_, b4_symbol_constructor_define):
+	Move to...
+	* data/variant.hh: here.
+	Remove the "b4_variant_if" parts, as variant.hh is loaded only if
+	needed.
+	* data/lalr1.cc: No longer invoke b4_symbol_constructor_define and
+	b4_symbol_constructor_declare, as it is now done by
+	b4_public_types_define and b4_public_types_declare.
+
+2009-03-02  Akim Demaille  <demaille@gostai.com>
+
+	Coding style changes.
+	* data/lalr1.cc (b4_symbol_constructor_declaration_)
+	(b4_symbol_constructor_declarations)
+	(b4_symbol_constructor_definition_)
+	(b4_symbol_constructor_definitions)
+	(b4_yytranslate_definition): Rename as...
+	(b4_symbol_constructor_declare_)
+	(b4_symbol_constructor_declare)
+	(b4_symbol_constructor_define_)
+	(b4_symbol_constructor_define)
+	(b4_yytranslate_define): these.
+	* data/variant.hh (b4_variant_definition): Rename as...
+	(b4_variant_define): this.
+
+2009-03-02  Akim Demaille  <demaille@gostai.com>
+
+	Factor b4_assert_if, b4_lex_symbol_if, and b4_variant_if.
+	* data/bison.m4 (b4_percent_define_if_define): New.
+	* data/c++.m4 (b4_variant_if): Move to...
+	* data/bison.m4: Here, using b4_percent_define_if_define.
+	* data/lalr1.cc (b4_assert_if, b4_lex_symbol_if): Move to...
+	* data/bison.m4: Here, using b4_percent_define_if_define.
+
+2009-03-02  Akim Demaille  <demaille@gostai.com>
+
+	Dub symbol_type_base as a public type.
+	* data/c++.m4 (b4_public_types_declare): Now define
+	symbol_type_base and symbol_type.
+	(b4_public_types_define): New.
+	In both cases, the definitions are taken verbatim from lalr1.cc.
+	* data/lalr1.cc: Adjust.
+
+2009-03-02  Akim Demaille  <demaille@gostai.com>
+
+	b4_public_types_declare.
+	* data/c++.m4 (b4_public_types_declare): New.
+	* data/glr.cc, data/lalr1.cc: Use it.
+
+2009-03-02  Akim Demaille  <demaille@gostai.com>
+
+	b4_semantic_type_declare.
+	* data/c++.m4 (b4_semantic_type_declare): New.
+	Factors and generalizes what was in glr.cc and lalr1.cc.
+	* data/variant.hh (b4_semantic_type_declare): Redefine it for
+	variants.
+	* data/lalr1.cc, data/glr.cc: Use it.
+
+2009-02-26  Akim Demaille  <demaille@gostai.com>
+
+	Upgrade gnulib.
+	* gnulib: Upgrade from master.
+	* lib/.cvsignore, lib/.gitignore, m4/.cvsignore, m4/.gitignore:
+	Regen.
+
+2009-02-25  Akim Demaille  <demaille@gostai.com>
+
+	Remove useless arguments.
+	* data/glr.c (yy_reduce_print): $$ and @$ are not used and not
+	relevant.
+
+2009-02-25  Akim Demaille  <demaille@gostai.com>
+
+	Comment changes.
+	* data/lalr1.cc: here.
+
+2009-02-25  Akim Demaille  <demaille@gostai.com>
+
+	Fix glr.cc's debug level handling.
+	* data/glr.cc (yydebug_): Remove, as it is actually yydebug from
+	glr.c which is used.
+	(debug_level, set_debug_level): Adjust.
+
+2009-02-25  Akim Demaille  <demaille@gostai.com>
+
+	Copyright years.
+	* data/glr.c: Add 2007 and 2008 here, consistenly with the comments.
+
+2009-02-25  Akim Demaille  <demaille@gostai.com>
+
+	Style changes.
+	* etc/bench.pl.in (generate_grammar_list): Consitently use
+	location_type, not yy::location.
+
+2009-02-25  Akim Demaille  <demaille@gostai.com>
+
+	Comment change.
+	* data/lalr1.cc: here.
+
+2009-02-19  Akim Demaille  <demaille@gostai.com>
+
+	Make yyparser::error public.
+	* data/lalr1.cc: here.
+	There is no good reason to keep it private (and it is convenient
+	to use it from the scanner for instance).  It is already public in
+	glr.cc.
+
+2009-02-19  Akim Demaille  <demaille@gostai.com>
+
+	Comment changes.
+	* data/glr.cc: here.
+
+2009-02-19  Akim Demaille  <demaille@gostai.com>
+
+	Remove trailing blanks.
+	The epilogue has its own ending \n, no need to add another.
+
+	* data/glr.c, data/lalr1.java, data/yacc.c: dnl when outputing the
+	epilogue.
+	* data/glr.cc: dnl when extending the epilogue.
+	Remove stray "private:".
+
+2009-02-19  Akim Demaille  <demaille@gostai.com>
+
+	Use b4_c_modern.
+	* data/c.m4 (b4_c_function_decl): Here.
+
+2009-02-19  Akim Demaille  <demaille@gostai.com>
+
+	Comment changes.
+	* data/lalr1.cc: here.
+
+2009-02-19  Akim Demaille  <demaille@gostai.com>
+
+	Extract variant.hh
+	* data/variant.hh: New, extracted from...
+	* data/lalr1.cc: here.
+	Adjust.
+	* data/local.mk: Adjust.
+
+2009-02-19  Akim Demaille  <demaille@gostai.com>
+
+	Extract stack.hh from lalr1.cc.
+	* data/stack.hh: New.
+	* data/lalr1.cc: Extract from here.
+	* data/local.mk: Adjust.
+
+2009-02-03  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Add reminder about uploading public key to keys.gnupg.net.
+	* HACKING (Release Procedure): Here.
+
+2009-01-28  Akim Demaille  <demaille@gostai.com>
+
+	* NEWS: Update information about 2.4.1 and 2.4.2.
+
+2008-11-04  Akim Demaille  <demaille@gostai.com>
+
+	Reformat NEWS.
+	* NEWS: Use more outline-mode markup.
+	Suggested by Jim Meyering.
+
+2009-01-08  Akim Demaille  <demaille@gostai.com>
+
+	Fix grep portability issues.
+	Grep on Solaris does not support -q.
+	Reported by Summum Bonum.
+
+	* NEWS: Add a stub for 2.4.2.
+	* THANKS: Add Summum Bonum.
+	* tests/atlocal.in (EGREP): New.
+	(CC, CXX, XSLTPROC): Make it possible to override them via
+	envvars.
+	* tests/java.at: Use $EGREP instead of egrep.
+	Use AT_CHECK's ignore instead of grep's -q.
+
+2008-12-11  Akim Demaille  <demaille@gostai.com>
+
+	Pass the token type to yysyntax_error.
+	* data/yacc.c (yysyntax_error): Take the transated token instead
+	of the raw number.
+	Adjust callers.
+	* TODO: Update.
+
+2008-12-11  Akim Demaille  <demaille@gostai.com>
+
+	Formatting changes.
+	* data/glr.c: Formatting changes.
+
+2008-12-11  Akim Demaille  <demaille@gostai.com>
+
+	Propagate i18n changes into glr.c.
+	* TODO: Update.
+	* data/glr.c (yyreportSyntaxError): Use "switch" instead of
+	building the error message format dynamically.
+	* data/lalr1.java: Formatting changes.
+
+2008-12-11  Akim Demaille  <demaille@gostai.com>
+
+	Use testsuite -C.
+	* tests/local.mk: Replace "cd && testsuite" by "testsuite -C".
+	Solves problems when top_srcdir is an absolute path.
+	Suggested by Eric Blake.
+	* configure.ac: Require Autoconf 2.62.
+
+2008-12-11  Akim Demaille  <demaille@gostai.com>
+
+	Simplify the i18n of the error messages.
+	* data/lalr1.cc: Comment changes.
+	* data/yacc.c (yysyntax_error): Rewrite, using a switch as in
+	lalr1.cc instead of building dynamically the format string.
+
+2008-12-08  Akim Demaille  <demaille@gostai.com>
+
+	Fix portability issue in the test suite.
+	* tests/local.at (AT_MATCHES_CHECK): New.
+	Based on Perl instead of Sed.  Sed has too many portability
+	pitfalls, not ever Sed is GNU Sed.
+	* tests/actions.at (Fix user actions without a trailing semicolon):
+	Use it.
+
+2008-12-08  Akim Demaille  <demaille@gostai.com>
+
+	Update data/README.
+	* data/README: Document glr.cc, lalr1.java, m4sugar and xslt.
+
+2008-12-08  Akim Demaille  <demaille@gostai.com>
+
+	Install autoconf as a submodule to get m4sugar.
+	* .gitmodules: Add submodules/autoconf.
+	* data/m4sugar/foreach.m4, data/m4sugar/m4sugar.m4: Now links into
+	submodules/autoconf.
+
+2008-12-08  Akim Demaille  <demaille@gostai.com>
+
+	Test token.prefix in all the skeletons.
+	* data/java.m4 (b4_token_enum): Use the token.prefix.
+	* tests/local.at (AT_BISON_OPTION_PUSHDEFS): Define AT_TOKEN_PREFIX.
+	* tests/calc.at (_AT_DATA_CALC_Y): Use it.
+	Add checks for yacc.c, glr.c, lalr1.cc and glr.cc.
+	* tests/java.at: Comment changes.
+	(AT_CHECK_JAVA_MINIMAL): Define the END token.
+	(Java parser class and package names): Add token.prefix check.
+
+2008-12-08  Akim Demaille  <demaille@gostai.com>
+
+	Fix regeneration of atconfig.
+	* tests/local.mk (tests/atconfig): The rule was incorrect, but
+	remove it: now that there is no tests/Makefile.am, the top-level
+	Makefile properly updates atconfig when needed.
+
+2008-12-07  Di-an Jan  <dianj@freeshell.org>
+
+	Implement the FIXME that ends an user action with a semicolon
+	if it seems necessary.
+	* src/scan-code.l (flex rules section): Flag cpp directive from
+	any `#' to the first unescaped end-of-line.  Semicolon is not
+	needed after `;', `{', '}', or cpp directives and is needed after
+	any other token (whitespaces and comments have no effect).
+	* tests/actions.at (Fix user actions without a trailing semicolon):
+	New test.
+	* tests/input.at (AT_CHECK_UNUSED_VALUES): Add semicolons to
+	to make user actions complete statements.
+	Adjust column numbers in error messages.
+	* tests/regression.at (Fix user actions without a trailing semicolon):
+	Remove.  Covered by new test.
+
+2008-12-07  Akim Demaille  <demaille@gostai.com>
+
+	Update gnulib.
+	* gnulib: Update from master.
+
+2008-12-05  Eric Blake  <ebb9@byu.net>
+
+	Avoid compiler warning.
+	* src/output.c (muscle_insert_item_number_table): Delete unused
+	function.
+
+2008-12-02  Eric Blake  <ebb9@byu.net>
+
+	Build testsuite with newer autoconf.
+	* tests/output.at (m4_expand): Don't override in newer autoconf,
+	where the underlying implementation changed.
+	* tests/cxx-type.at (_AT_RESOLVED_GLR_OUTPUT)
+	(_AT_RESOLVED_GLR_OUTPUT_WITH_LOC, _AT_AMBIG_GLR_OUTPUT)
+	(_AT_AMBIG_GLR_OUTPUT_WITH_LOC, _AT_GLR_STDERR)
+	(_AT_VERBOSE_GLR_STDERR): Expand to double-quoted strings,
+	since some of them contain unbalanced ')'.
+
+2008-12-01  Akim Demaille  <demaille@gostai.com>
+
+	Use b4_symbol for printers and destructors everywhere.
+	* data/bison.m4 (b4_symbol_action_location): New.
+	* data/c.m4 (b4_symbol_actions): Remove.
+	Adjust all callers to use by b4_symbol_foreach and the corresponding
+	b4_symbol_printer/destructor macro.
+	* data/glr.cc: Adjust.
+	* data/lalr1.java: Adjust the %destructor sanity check.
+	* src/output.c (symbol_code_props_output): Remove, we no longer
+	need the b4_symbol_printers/destructors tables.
+
+2008-12-01  Akim Demaille  <demaille@gostai.com>
+
+	Use b4_symbol_case_.
+	* data/lalr1.cc, data/bison.m4 (b4_symbol_action): Use
+	b4_symbol_case_.
+
+2008-12-01  Akim Demaille  <demaille@gostai.com>
+
+	Move b4_symbol based macro to bison.m4.
+	* data/lalr1.cc (b4_symbol_, b4_symbol, b4_symbol_if)
+	(b4_symbol_action, b4_symbol_destructor, b4_symbol_printer)
+	(b4_symbol_case_, b4_symbol_foreach, b4_type_action_)
+	(b4_type_foreach): Move to...
+	* data/bison.m4: Here.
+	* data/lalr1.cc (b4_symbol_action): Specialize for C++: use
+	b4_symbol_value_template instead of b4_symbol_value.
+
+2008-12-01  Akim Demaille  <demaille@gostai.com>
+
+	b4_symbol/type_foreach.
+	* data/lalr1.cc (b4_symbol_foreach, b4_type_foreach): New.
+	Use them.
+
+2008-12-01  Akim Demaille  <demaille@gostai.com>
+
+	Use the symbol properties to output the printer/destructor for lalr1.cc.
+	Instead of defining complex list of tuples to define various
+	properties of the symbols, we now prefer to define symbols as
+	"structs" in m4: using the symbol key (its number), and the
+	property name, b4_symbol gives it value.  Use this to handle
+	destructors and printers.
+
+	* src/output.c (CODE_PROP): New.
+	(prepare_symbol_definitions): Use it to define the printer and
+	destructor related attributes of the symbols.
+	* data/lalr1.cc (b4_symbol_actions): Rename as...
+	(b4_symbol_action): this.
+	Use b4_symbol instead of 6 arguments.
+	(b4_symbol_printer, b4_symbol_destructor): New.
+	Use them instead of b4_symbol_actions.
+
+2008-12-01  Akim Demaille  <demaille@gostai.com>
+
+	Avoid capturing variables too easily.
+	* src/muscle_tab.h (MUSCLE_INSERT_BOOL, MUSCLE_OBSTACK_SGROW): Use
+	v__ and p__ instead of v and p.
+
+2008-12-01  Akim Demaille  <demaille@gostai.com>
+
+	Remove spurious empty line before syncline.
+	* data/bison.m4 (b4_syncline): Don't output an empty line before
+	the output.
+
+2008-11-26  Akim Demaille  <demaille@gostai.com>
+
+	Convert lib/Makefile.am into lib/local.mk.
+	The real problem is rather gnulib.mk, which itself is extracted
+	from a Makefile.am that gnulib expects to the "recursive".  The
+	tool prefix-gnulib-mk converts such a gnulib.mk to be
+	non-recursive.  Also, some AC_SUBST variables need to be adjusted.
+
+	* etc/prefix-gnulib-mk: New.
+	* bootstrap (slurp): Use it to convert further gnulib.mk.
+	No longer try to avoid re-creation of lib/gnulib.mk as the changes
+	are deeper.
+	* lib/Makefile.am: Rename as...
+	* lib/local.mk: this.
+	Adjust to be prefixed.
+	* Makefile.am, configure.ac: Adjust.
+	* src/local.mk (AM_CPPFLAGS): Extend it, don't define it.
+
+2008-11-26  Akim Demaille  <demaille@gostai.com>
+
+	s/_FLAGS/FLAGS/.
+	* tests/local.mk (TESTSUITE_FLAGS, AUTOTEST_FLAGS): Rename as...
+	(TESTSUITEFLAGS, AUTOTESTFLAGS): these to compy with the GCS.
+	Reported by Eric Blake.
+
+2008-11-26  Akim Demaille  <demaille@gostai.com>
+
+	Use b4_parser_tables_define in glr.cc.
+	* data/glr.c: Use b4_parser_tables_define instead of defining the
+	(deterministic integral) tables by hand.
+
+2008-11-26  Akim Demaille  <demaille@gostai.com>
+
+	Use b4_parser_tables_define in Java.
+	* data/java.m4 (b4_typed_parser_table): Rename as...
+	(b4_typed_parser_table_define): this, for consistency.
+	Accept a comment as $4.
+	Move $2 into yy*_.
+	(b4_integral_parser_table): Rename as...
+	(b4_integral_parser_table_define): this.
+	* data/lalr1.java: Adjust all uses.
+	Use b4_parser_tables_define instead of generation by hand.
+
+2008-11-26  Akim Demaille  <demaille@gostai.com>
+
+	Prepare the convergence bw C style and Java table generation.
+	* data/bison.m4 (b4_tables_map, b4_tables_declare)
+	(b4_tables_define): Rename as...
+	(b4_integral_parser_tables_map, b4_parser_tables_declare)
+	(b4_parser_tables_define): these.
+	* data/c.m4 (b4_table_define): Rename as...
+	(b4_integral_parser_table_define): this.
+	* data/lalr1.cc: Adjust.
+	(b4_table_define, b4_table_declare): Rename as...
+	(b4_integral_parser_table_define)
+	(b4_integral_parser_table_declare): these.
+	(yyrline_): Move the comment where it is actually used.
+	* data/yacc.c: Adjust.
+	(yyrline): Use b4_integral_parser_table_define.
+
+2008-11-26  Akim Demaille  <demaille@gostai.com>
+
+	Regen.
+	* src/parse-gram.h, src/parse-gram.c: Regen.
+
+2008-11-26  Akim Demaille  <demaille@gostai.com>
+
+	Factor the generation of the (integral) tables bw yacc.c and lalr1.cc.
+	* data/lalr1.cc (b4_tables_map): Move to...
+	* data/bison.m4: here.
+	Update the comment for yytable during the flight.
+	(b4_tables_declare, b4_tables_define): New.
+	* data/lalr1.cc: Use them.
+	* data/c.m4 (b4_table_define): New.
+	* data/yacc.c: Use b4_tables_define instead of output the tables
+	by hand.
+	* tests/regression.at (Web2c Actions): Adjust the expected output,
+	the order of the tables changed.
+
+2008-11-26  Akim Demaille  <demaille@gostai.com>
+
+	Get rid of (yy)rhs and (yy)prhs.
+	These tables are no longer needed in the parsers, and they don't seem to
+	be useful.  They are not documented either.
+
+	* src/output.c (prepare_rules): Get rid of rhs and prhs.
+	Adjust the computation of (yy)r2.
+
+2008-11-26  Akim Demaille  <demaille@gostai.com>
+
+	Rule length is unsigned.
+	* src/gram.h, src/gram.c (rule_rhs_length): Return a size_t.
+
+2008-11-26  Akim Demaille  <demaille@gostai.com>
+
+	Get rid of lalr1-split.cc.
+	It was no longer maintainer.
+
+	* data/lalr1-split.cc: Remove.
+	* etc/bench.pl.in (bench_fusion_parser): Remove.
+	Adjust.
+
+2008-11-26  Akim Demaille  <demaille@gostai.com>
+
+	Use yy* consistently.
+	* data/glr.c: Now that yyrhs no longer exists as a global
+	variable, rename local "rhs" variables into "yyrhs" for
+	consistency.
+
+2008-11-25  Akim Demaille  <demaille@gostai.com>
+
+	Get rid of yyrhs and yyprhs in glr.c.
+	* data/glr.c (yyrhs, yyprhs): Remove.
+	Instead, use the state stack and yystos.
+
+2008-11-25  Akim Demaille  <demaille@gostai.com>
+
+	Flag glr tests.
+	* tests/local.at (_AT_BISON_OPTION_PUSHDEFS): If glr, declare it
+	as an Autotest keyword.
+
+2008-11-25  Akim Demaille  <demaille@gostai.com>
+
+	Prefer TESTSUITE_FLAGS.
+	TESTSUITEFLAGS is barely readable.
+
+	* tests/local.mk (TESTSUITE_FLAGS): Default to $(TESTSUITEFLAGS)
+	for backward compatibility.
+	Use the former instead of the latter.
+
+2008-11-25  Akim Demaille  <demaille@gostai.com>
+
+	Get rid of yyrhs and yyprhs in larl1.java.
+	* data/lalr1.java (yyrhs_, yyprhs_): Remove.
+	(yy_reduce_print): Rather, use yystos_ and the state stack.
+
+2008-11-25  Akim Demaille  <demaille@gostai.com>
+
+	Formatting changes.
+
+2008-11-25  Akim Demaille  <demaille@gostai.com>
+
+	Get rid of yyrhs and yyprhs in yacc.c.
+	They were used to get the symbol types, given a rule number, when
+	displaying the top of the stack before a reduction.  But the
+	symbol type is available from the state stack.  This has two be
+	benefits: two tables less in the parser (making it smaller), and a
+	more consistent use of the three stacks which will help to fuse
+	them.
+
+	* data/yacc.c (yyprhs, yyrhs): Remove.
+	(YY_REDUCE_PRINT): Pass yyssp to yy_reduce_print.
+	(yy_reduce_print): Take yyssp as argument.
+	Use it, together with yystos, to get the symbol type.
+	* tests/regression.at (Web2c Report): Remove these tables from the
+	expected output.
+
+2008-11-25  Akim Demaille  <demaille@gostai.com>
+
+	b4_tables_map.
+	The point is to factor the generation of the tables across skeletons.
+	This is language dependant.
+
+	* data/c.m4 (b4_comment_): New.
+	Should be usable to define how to generate tables independently of
+	the language.
+	(b4_c_comment): New.
+	(b4_comment): Bounce to b4_c_comment.
+	Now support $2 = [PREFIX] for indentation.
+	* data/lalr1.cc (b4_table_declare): Don't output a comment if
+	there is no comment.
+	Indent it properly when there is one.
+	Output the ending semicolon.
+	(b4_table_define): Space changes.
+	Output the ending semicolon.
+	(b4_tables_map): New.
+	Use it twice instead of declaring and defining the (integral)
+	tables by hand.
+
+2008-11-25  Akim Demaille  <demaille@gostai.com>
+
+	b4_table_declare.
+	* data/lalr1.cc (b4_table_declare): New.
+	Use it to declare the tables defined with b4_table_define.
+	(b4_table_define): Declare a third arg to match b4_table_declare
+	signature.
+	Move all the comments around invocations of b4_table_define into
+	the invocations itselves.
+	Move things around to have the order for declarations and
+	definitions.
+
+2008-11-25  Akim Demaille  <demaille@gostai.com>
+
+	Formatting changes.
+	* data/lalr1.java: here.
+
+2008-11-25  Akim Demaille  <demaille@gostai.com>
+
+	b4_args is more general than only C++.
+	* data/lalr1.cc (b4_args, _b4_args): Move to...
+	* data/bison.m4: here.
+
+2008-11-21  Di-an Jan  <dianj@freeshell.org>
+
+	Implement no-XXX arguments for --warnings, --report, --trace.
+	* src/getargs.c (flags_argmatch): Handles no-XXX.
+	Fix typo in doxygen comment.
+
+2008-11-21  Akim Demaille  <demaille@gostai.com>
+
+	Display the changes in cross-options.texi.
+	* build-aux/cross-options.pl ($sep): New, to separate items.
+	* doc/local.mk ($(CROSS_OPTIONS_TEXI)): Use diff to display the
+	changes.
+
+2008-11-20  Di-an Jan  <dianj@freeshell.org>
+
+	Improves options in the manual.
+	* doc/bison.texinfo (-g, -x): Add space before argument.
+	(Option Cross Key): Implement FIXME: listing directives also.
+	* build-aux/cross-options.pl:  Read from <STDIN> rather than <>.
+	(Short Option): Special case -d.  Put arguments inside @option.
+	(Bison Directive): Add column, automatically extracted from
+	src/scan-gram.l (actual name passed as the first argument)
+	with special case for %define.
+	* doc/local.mk (doc/cross-options.texi): Pass src/scan-gram.l
+	to build-aux/cross-options.pl.
+	* src/getargs.c (usage): Document limitations of cross-options.pl.
+	* src/scan-gram.l: Likewise.
+
+2008-11-18  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Fix unexpanded macros in GLR defines file.
+	Reported by Csaba Raduly at
+	<http://lists.gnu.org/archive/html/bug-bison/2008-11/msg00048.html>.
+	* THANKS (Csaba Raduly): Add.
+	* data/glr.c: Fix overquoting on b4_prefix for yylval and yylloc.
+	* tests/calc.at (_AT_DATA_CALC_Y): If %defines is specified, generate
+	lexer in a separate module that includes the defines file.
+	(AT_CHECK_CALC): From AT_FULL_COMPILE, request compilation of lexer
+	source.
+	* tests/local.at (_AT_BISON_OPTION_PUSHDEFS): Push AT_DEFINES_IF.
+	Adjust AT_LOC and AT_VAL to use AT_NAME_PREFIX.
+	(AT_BISON_OPTION_POPDEFS): Pop AT_DEFINES_IF.
+	(AT_DATA_SOURCE_PROLOGUE): New.
+	(AT_DATA_GRAMMAR_PROLOGUE): Use AT_DATA_SOURCE_PROLOGUE.
+	(AT_DATA_SOURCE): New.
+	(AT_FULL_COMPILE): Extend to support an additional source file.
+
+2008-11-18  Akim Demaille  <demaille@gostai.com>
+
+	More TODO.
+	* TODO: More short term issues.
+
+2008-11-18  Akim Demaille  <demaille@gostai.com>
+
+	Regen.
+	* src/parse-gram.h, src/parse-gram.c: Regen.
+
+2008-11-18  Akim Demaille  <demaille@gostai.com>
+
+	Use b4_subtract where possible.
+	* data/lalr1.cc (b4_subtract): Move to...
+	* data/bison.m4: here.
+	* data/glr.c (b4_rhs_data): Use it.
+	* data/yacc.c (b4_rhs_value, b4_rhs_location): Use it.
+
+2008-11-18  Akim Demaille  <demaille@gostai.com>
+
+	Remove incorrect mode specification.
+	* data/glr.cc: Don't pretend it's C code.
+
+2008-11-17  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Simplify last patch slightly.
+	* src/getargs.c (getargs): Here.
+
+2008-11-17  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Fix last warning from --enable-gcc-warnings.
+	* src/getargs.c (getargs): Don't assign const address to non-const
+	pointer.
+
+2008-11-17  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Don't let maintainer-*-check targets force a version update.
+	* cfg.mk (_is-dist-target): Implement.  maintainer-check* was already
+	handled.
+
+2008-11-17  Di-an Jan  <dianj@freeshell.org>
+
+	* doc/bison.texinfo: Synchronize ``Detail Node Listing''.
+	Align menus.  Adjust word wrapping.  Use node names for menu names.
+	(Examples): Don't abbreviate node names.
+	(LocalWords): Remove abbreviations.
+	(Copying): Make description a sentence.
+	(Java Action Features): Remove period to match the rest of menu.
+
+2008-11-17  Di-an Jan  <dianj@freeshell.org>
+
+	Handles several --enable-gcc-warnings.
+	* src/getargs.c (command_line_location): Set parameters to void.
+	* src/output.c (symbol_type_name_cmp): Make static.
+	(symbols_by_type_name): Set parameters to void.
+	(symbol_definitions_output): Remove unused parameter.  Rename as...
+	(prepare_symbol_definitions): this.
+	(muscles_output): Move symbol_definitions_output to...
+	(output): here as prepare_symbol_definitions.
+	* tests/c++.at (AT_CHECK_VARIANTS): Remove unused parameters of main.
+	(AT_CHECK_NAMESPACE): Make unused parameter lloc unnamed.
+
+2008-11-17  Di-an Jan  <dianj@freeshell.org>
+
+	* tests/c++.at (AT_CHECK_VARIANTS): Fixes tests 198-202.
+	Use AT_DATA_GRAMMAR instead of AT_DATA for compiled tests.
+
+2008-11-16  Akim Demaille  <demaille@gostai.com>
+
+	Add missing $(EXEEXT).
+	* doc/local.mk ($(CROSS_OPTIONS_TEXI)): The target is
+	"src/bison$(EXEEXT)".
+	Reported by Di-an Jan.
+
+2008-11-15  Akim Demaille  <demaille@gostai.com>
+
+	* TODO: Update.
+
+2008-11-15  Akim Demaille  <demaille@gostai.com>
+
+	Formatting changes.
+	* tests/input.at: here.
+
+2008-11-15  Akim Demaille  <demaille@gostai.com>
+
+	Remove duplicate header inclusion.
+	* src/LR0.c: here.
+
+2008-11-15  Akim Demaille  <demaille@gostai.com>
+
+	* src/parse-gram.h, src/parse-gram.c: Regen.
+
+2008-11-15  Akim Demaille  <demaille@gostai.com>
+
+	Support parametric types.
+
+	There are two issues to handle: first scanning nested angle
+	bracket pairs to support types such as std::pair< std::string,
+	std::list<std::string> > >.
+
+	Another issue is to address idiosyncracies of C++: do not glue two
+	closing angle brackets together (otherwise it's operator>>), and
+	avoid sticking blindly a TYPE to the opening <, as it can result
+	in '<:' which is a digraph for '['.
+
+	* src/scan-gram.l (brace_level): Rename as...
+	(nesting): this.
+	(SC_TAG): New.
+	Implement support for complex tags.
+	(tag): Accept
+	, but not <.
+	* data/lalr1.cc (b4_symbol_value, b4_symbol_value_template)
+	(b4_symbol_variant): Leave space around types as parameters.
+	* examples/variant.yy: Use nested template types and leading ::.
+	* src/parse-gram.y (TYPE, TYPE_TAG_ANY, TYPE_TAG_NONE, type.opt):
+	Rename as...
+	(TAG, TAG_ANY, TAG_NONE, tag.opt): these.
+	* tests/c++.at: Test parametric types.
+
+2008-11-15  Akim Demaille  <akim@betelgeuse.gostai.ensta.fr>
+
+	Test token.prefix.
+	This is not sufficient, but we test at least that the make_SYMBOL
+	interface is not affected by token.prefix.  A more general test
+	will be implemented when the support of token.prefix is generalized
+	to more skeletons.
+
+	* tests/c++.at: One more variant test, using token.prefix.
+
+2008-11-15  Akim Demaille  <akim@betelgeuse.gostai.ensta.fr>
+
+	Test the make_TOKEN interface.
+	* tests/c++.at (AT_CHECK_VARIANTS): Require and use locations.
+	Factor the common code in yylex.
+	Use it to test "%define lex_symbol".
+
+2008-11-15  Akim Demaille  <akim@betelgeuse.gostai.ensta.fr>
+
+	Formatting change.
+
+2008-11-15  Akim Demaille  <akim@betelgeuse.gostai.ensta.fr>
+
+	Simplify code for variants bench marks.
+	* etc/bench.pl.in (&generate_grammar_list): Define and use
+	location_type.
+	Factor the common code in yylex.
+
+2008-11-15  Akim Demaille  <demaille@gostai.com>
+
+	Better error message.
+	* bootstrap (find_tool): Fix the error message.
+
+2008-11-15  Akim Demaille  <demaille@gostai.com>
+
+	Update variant.yy to newest interface.
+	* examples/variant.yy: Define lex_symbol.
+	Adjust.
+
+2008-11-15  Akim Demaille  <demaille@gostai.com>
+
+	Don't use locations in variant.yy.
+	* examples/variant.yy: Adjust to not using locations.
+
+2008-11-15  Akim Demaille  <demaille@gostai.com>
+
+	Comment changes.
+	* data/local.mk, etc/local.mk, examples/local.mk: Use Automake
+	comments for the license.
+
+2008-11-15  Akim Demaille  <demaille@gostai.com>
+
+	Remove tests/Makefile.am.
+	* tests/Makefile.am: Rename as...
+	* tests/local.mk: this.
+	* Makefile.am, configure.ac: Adjust.
+	* Makefile.am (DISTCLEANFILES): Define.
+	(maintainer-check, maintainer-xml-check, maintainer-push-check):
+	Remove, we no longer need to bounce to the real targets.
+
+2008-11-15  Akim Demaille  <demaille@gostai.com>
+
+	Comment changes.
+
+2008-11-15  Akim Demaille  <demaille@gostai.com>
+
+	djgpp/local.mk.
+	* Makefile.am (EXTRA_DIST): Move djgpp related part to...
+	* djgpp/local.mk: this new file.
+
+2008-11-15  Akim Demaille  <demaille@gostai.com>
+
+	Remove doc/Makefile.am.
+	* doc/Makefile.am: Rename as...
+	* doc/local.mk: this.
+	Adjust paths
+	* Makefile.am, configure.ac: Adjust.
+	* Makefile.am (MOSTLYCLEANFILES): New.
+	* src/local.mk: Adjust.
+
+2008-11-15  Akim Demaille  <demaille@gostai.com>
+
+	Move sc_tight_scope into maint.mk.
+	It does not work, and I don't know how it was supposed to work: it
+	seems to be looking for sources in the build tree.  I just moved
+	it at a better place, fixing it is still required.
+
+	* src/local.mk (echo): Remove.
+	(sc_tight_scope): Move to...
+	* maint.mk: here.
+
+2008-11-15  Akim Demaille  <demaille@gostai.com>
+
+	Regen.
+	* src/parse-gram.h, src/parse-gram.h: Regen.
+
+2008-11-15  Akim Demaille  <demaille@gostai.com>
+
+	Remove src/Makefile.am.
+	* src/Makefile.am: Rename as...
+	* src/local.mk: this.
+	Prefix all the paths with src/.
+	(AUTOMAKE_OPTIONS): Build object files in the sub dirs.
+	(AM_CPPFLAGS): Find find in builddir/src.
+	(YACC): Move the flags into...
+	(AM_YFLAGS): here.
+	* maint.mk (sc_tight_scope): Disable.
+	It used to bounce to the version in src/Makefile.am which is now
+	part of this very Makefile.
+	* Makefile.am, configure.ac: Adjust.
+	* src/scan-code-c.c, src/scan-code.l: We can no longer rely on
+	include "..." to find files "here": we are no longer in src/, so
+	qualify the includes with src/.
+	* doc/Makefile.am (PREPATH): No longer include the top_builddir
+	prefix.
+	(.x.1): Adjust to be able to create src/foo from the top level
+	Makefile, instead of going bounce to src/Makefile the creation of
+	foo.
+
+2008-11-15  Akim Demaille  <demaille@gostai.com>
+
+	Remove useless variable.
+	* doc/Makefile.am (srcsrcdir): Remove.
+
+2008-11-15  Akim Demaille  <demaille@gostai.com>
+
+	Remove data/Makefile.am.
+	* data/Makefile.am: Rename as...
+	* data/local.mk: this.
+	Adjust paths.
+	* Makefile.am, configure.ac: Adjust.
+
+2008-11-15  Akim Demaille  <demaille@gostai.com>
+
+	Remove etc/Makefile.am.
+	* etc/Makefile.am: Rename as...
+	* etc/local.mk: this.
+	Adjust.
+	* Makefile.am, configure.ac: Adjust.
+
+2008-11-15  Akim Demaille  <demaille@gostai.com>
+
+	Remove examples/local.mk.
+	examples/calc++/Makefile.am might be interesting to keep as is, since
+	it is an example in itself.
+
+	* examples/Makefile.am: Rename as...
+	* examples/local.mk: this.
+	Adjust.
+	* Makefile.am, configure.ac: Adjust.
+
+2008-11-15  Akim Demaille  <demaille@gostai.com>
+
+	Remove build-aux/Makefile.am.
+	Recursive Makefiles are really way too slow, let's get rid of some of
+	them.
+
+	* build-aux/Makefile.am: Rename as...
+	* build-aux/local.mk: this.
+	Adjust paths.
+	* Makefile.am, configure.ac: Adjust.
+
+2008-11-15  Akim Demaille  <demaille@gostai.com>
+
+	Provide convenience constructors for locations and positions.
+	* data/location.cc (position::position): Accept file, line and
+	column as arguments with default values.
+	Always qualify initial line and column literals as unsigned.
+	(location::location): Provide convenience constructors.
+
+2008-11-15  Akim Demaille  <demaille@gostai.com>
+
+	Instead of using make_symbol<TOK_FOO>, generate make_FOO for each
+	token type.
+	Using template buys us nothing, and makes it uselessly complex to
+	construct a symbol.  Besides, it could not be generalized to other
+	languages, while make_FOO would work in C/Java etc.
+
+	* data/lalr1.cc (b4_symbol_): New.
+	(b4_symbol): Use it.
+	(b4_symbol_constructor_declaration_)
+	(b4_symbol_constructor_definition_): Instead of generating
+	specializations of an overloaded template function, just generate
+	several functions whose names are forged from the token names
+	without the token.prefix.
+	(b4_symbol_constructor_declarations): Generate them for all the
+	symbols, not just by class of symbol type, now that instead of
+	specializing a function template by the token, we generate a
+	function named after the token.
+	(b4_symbol_constructor_specialization_)
+	(b4_symbol_constructor_specializations): Remove.
+	* etc/bench.pl.in: Adjust to this new API.
+
+2008-11-13  Akim Demaille  <demaille@gostai.com>
+
+	%define token.prefix.
+	Provide a means to add a prefix to the name of the tokens as
+	output in the generated files.  Because of name clashes, it is
+	good to have such a prefix such as TOK_ that protects from names
+	such as EOF, FILE etc.  But it clutters the grammar itself.
+
+	* data/bison.m4 (token.prefix): Empty by default.
+	* data/c.m4 (b4_token_enum, b4_token_define): Use it.
+	* data/lalr1.cc (b4_symbol): Ditto.
+
+2008-11-13  Akim Demaille  <demaille@gostai.com>
+
+	Compute at M4 time some of the subtractions.
+	* data/lalr1.cc (b4_subtract): New.
+	(b4_rhs_data): Use it.
+
+2008-11-13  Akim Demaille  <demaille@gostai.com>
+
+	symbol::token.
+	This allows the user to get the type of a token returned by yylex.
+
+	* data/lalr1.cc (symbol::token): New.
+	(yytoknum_): Define when %define lex_symbol, independently of
+	%debug.
+	(yytoken_number_): Move into...
+	(symbol::token): here, since that's the only use.
+	The other one is YYPRINT which was not officially supported
+	by lalr1.cc, and anyway it did not work since YYPRINT uses this
+	array under a different name (yytoknum).
+
+2008-11-13  Akim Demaille  <demaille@gostai.com>
+
+	YYERRCODE.
+	* TODO (YYERRCODE): Mention the case of $undef.
+
+2008-11-13  Akim Demaille  <demaille@gostai.com>
+
+	TODO: YYPRINT.
+	* TODO (YYPRINT): New.
+
+2008-11-13  Akim Demaille  <demaille@gostai.com>
+
+	Comment changes.
+	* data/lalr1.cc, data/yacc.c: Fix the description of the
+	yytranslate and yytoknum tables.
+
+2008-11-13  Akim Demaille  <demaille@gostai.com>
+
+	Define make_symbol in the header.
+	To reach good performances these functions should be inlined (yet
+	this is to measure precisely).  To this end they must be available
+	to the caller.
+
+	* data/lalr1.cc (b4_symbol_constructor_definition_): Qualify
+	location_type with the class name.
+	Since will now be output in the header, declare "inline".
+	No longer use b4_symbol_constructor_specializations, but
+	b4_symbol_constructor_definitions in the header.
+	Don't call it in the *.cc file.
+
+2008-11-13  Akim Demaille  <demaille@gostai.com>
+
+	Define yytranslate in the header for lex_symbol.
+	* data/lalr1.cc: Move the invocation of b4_yytranslate_definition
+	into the header file when using %define lex_symbol.
+	(yytranslate_): Declare inline.
+
+2008-11-13  Akim Demaille  <demaille@gostai.com>
+
+	Define the constructors of symbol_type in
+	b4_symbol_constructor_definitions.
+	The constructors are called by the make_symbol functions, which a
+	forthcoming patch will move elsewhere.  Hence the interest of
+	putting them together.
+
+	The stack_symbol_type does not need to be moved, it is used only
+	by the parser.
+
+	* data/lalr1.cc: Move symbol_type and symbol_base_type
+	constructors into...
+	(b4_symbol_constructor_definitions): here.
+	Adjust.
+
+2008-11-13  Akim Demaille  <demaille@gostai.com>
+
+	Make it easier to move the definition of yytranslate_.
+	Forthcoming changes will make it possible to use yytranslate_
+	from outside the parser implementation file.
+
+	* data/lalr1.cc (b4_yytranslate_definition): New.
+	Use it.
+
+2008-11-13  Akim Demaille  <demaille@gostai.com>
+
+	Remove useless class specification.
+	* data/lalr1.cc (b4_symbol_constructor_specialization_): No need
+	to refer to the class name to use a type defined by the class for
+	arguments of member functions.
+
+2008-11-13  Akim Demaille  <demaille@gostai.com>
+
+	Finer input type for yytranslate.
+	This patch is debatable: the tradition expects yylex to return an int
+	which happens to correspond to token_number (which is an enum).  This
+	allows for instance to return characters (such as '*' etc.).  But this
+	goes against the stronger typing I am trying to have with the new
+	lex interface which return a symbol_type.  So in this case, feed
+	yytranslate_ with a token_type.
+
+	* data/lalr1.cc (yytranslate_): When in %define lex-symbol,
+	expect a token_type.
+
+2008-11-13  Akim Demaille  <demaille@gostai.com>
+
+	Honor lex-params in %define lex_symbol mode.
+	* data/lalr1.cc: Use b4_lex_param.
+
+2008-11-13  Akim Demaille  <demaille@gostai.com>
+
+	Simplify names.
+	* src/output.c (symbol_definitions_output): Rename symbol
+	attributes type_name and has_type_name as type and has_type.
+	* data/lalr1.cc: Adjust uses.
+
+2008-11-13  Akim Demaille  <demaille@gostai.com>
+
+	Use b4_type_names for the union type.
+	The union used to compute the size of the variant used to iterate
+	over the type of all the symbols, with a lot of redundancy.  Now
+	iterate over the lists of symbols having the same type-name.
+
+	* data/lalr1.cc (b4_char_sizeof_): New.
+	(b4_char_sizeof): Use it.
+	Adjust to be called with a list of numbers instead of a single
+	number.
+	Adjust its caller for new-line issues.
+
+2008-11-13  Akim Demaille  <demaille@gostai.com>
+
+	Define the "identifier" of a symbol.
+	Symbols may have several string representations, for instance if
+	they have an alias.  What I call its "id" is a string that can be
+	used as an identifier.  May not exist.
+
+	Currently the symbols which have the "tag_is_id" flag set are
+	those that don't have an alias.  Look harder for the id.
+
+	* src/output.c (is_identifier): Move to...
+	* src/symtab.c (is_identifier): here.
+	* src/symtab.h, src/symtab.c (symbol_id_get): New.
+	* src/output.c (symbol_definitions_output): Use it to define "id"
+	and "has_id".
+	Remove the definition of "tag_is_id".
+	* data/lalr1.cc: Use the "id" and "has_id" whereever "tag" and
+	"tag_is_id" were used to produce code.
+	We still use "tag" for documentation.
+
+2008-11-11  Akim Demaille  <demaille@gostai.com>
+
+	Locations are no longer required by lalr1.cc.
+	* data/lalr1.cc (_b4_args, b4_args): New.
+	Adjust all uses of locations to make them optional.
+	* tests/c++.at (AT_CHECK_VARIANTS): No longer use the locations.
+	(AT_CHECK_NAMESPACE): Check the use of locations.
+	* tests/calc.at (_AT_DATA_CALC_Y): Adjust to be usable with or
+	without locations with lalr1.cc.
+	Test these cases.
+	* tests/output.at: Check lalr1.cc with and without location
+	support.
+	* tests/regression.at (_AT_DATA_EXPECT2_Y, _AT_DATA_DANCER_Y):
+	Don't use locations.
+
+2008-11-11  Akim Demaille  <demaille@gostai.com>
+
+	AT_FULL_COMPILE.
+	* tests/local.at (AT_FULL_COMPILE): New.
+	* tests/actions.at, tests/calc.at, tests/regression.at: Use it.
+
+2008-11-11  Akim Demaille  <demaille@gostai.com>
+
+	Support parens in calc++.
+	* doc/bison.texinfo (Calc++ Scanner, Calc++ Parser): Support parens.
+	* examples/calc++/test (run): Check the expected output.
+	Adjust callers.
+	Check parens too.
+
+2008-11-11  Akim Demaille  <demaille@gostai.com>
+
+	Simplify lalr1.cc since %defines is mandatory.
+	* data/lalr1.cc: Remove useless calls to b4_defines_if.
+
+2008-11-11  Akim Demaille  <demaille@gostai.com>
+
+	TODO: yyfmt.
+	* TODO (yysyntax_error): New item.
+
+2008-11-11  Akim Demaille  <demaille@gostai.com>
+
+	Prefer M4 to CPP.
+	* data/lalr1.cc: Use b4_error_verbose_if instead of #if
+	YYERROR_VERBOSE.
+
+2008-11-11  Akim Demaille  <demaille@gostai.com>
+
+	Support i18n of the parse error messages.
+	* TODO (lalr1.cc/I18n): Remove.
+	* data/lalr1.cc (yysyntax_error_): Support the translation of the
+	error messages, as done in yacc.c.
+	Stay within the yy* pseudo namespace.
+
+2008-11-11  Akim Demaille  <demaille@gostai.com>
+
+	More TODO.
+	* TODO (single stack, yysyntax_error): New.
+
+2008-11-11  Akim Demaille  <demaille@gostai.com>
+
+	Make it possible to return a symbol_type from yylex.
+	* data/lalr1.cc (b4_lex_symbol_if): New.
+	(parse): When lex_symbol is defined, expected yylex to return the
+	complete lookahead.
+	* etc/bench.pl.in (generate_grammar_list): Extend to support this
+	yylex interface.
+	(bench_variant_parser): Exercise it.
+
+2008-11-11  Akim Demaille  <demaille@gostai.com>
+
+	Remove useless bench case.
+	* etc/bench.pl.in (bench_variant_parser): VARIANT_DESTROY is
+	no longer used.
+
+2008-11-11  Akim Demaille  <demaille@gostai.com>
+
+	Improve display of directives.
+	* etc/bench.pl.in (parse_term): Don't add useless eol.
+
+2008-11-11  Akim Demaille  <demaille@gostai.com>
+
+	Use string_cast in the bench.
+	* etc/bench.pl.in (generate_grammar_list): Define and use
+	string_cast.
+
+2008-11-11  Akim Demaille  <demaille@gostai.com>
+
+	Replace yychar with a Boolean.
+	* data/lalr1.cc (parse::yychar): Replace by...
+	(parse::yyempty): this.
+
+2008-11-11  Akim Demaille  <demaille@gostai.com>
+
+	Factor the tables.
+	* TODO: New item.
+
+2008-11-11  Akim Demaille  <demaille@gostai.com>
+
+	Let yytranslate handle the eof case.
+	* data/lalr1.cc (yytranslate_): Handle the EOF case.
+	Adjust callers.
+	No longer expect yychar to be equal to yyeof_, rather, test the
+	lookahead's (translated) kind.
+
+2008-11-11  Akim Demaille  <demaille@gostai.com>
+
+	yychar cannot be empty in yyerrlab.
+	* TODO (yychar == yyempty_): New.
+	* data/lalr1.cc: Remove the handling of this case.
+	This eases forthcoming changes related to yychar and yytranslate.
+
+2008-11-11  Akim Demaille  <demaille@gostai.com>
+
+	Bench: syntactic sugar for %define/#define.
+	* etc/bench.pl.in (parse_dirs): Support %d and #d with arguments.
+	(&bench_push_parser, bench_variant_parser): Use this feature.
+	(&eat): New.
+	Use it.
+
+2008-11-11  Akim Demaille  <demaille@gostai.com>
+
+	Less memory pressure on the "list" bench.
+	* etc/bench.pl.in (generate_grammar_list): Do not accumulate all
+	the values, to limit memory pressure.
+
+2008-11-11  Akim Demaille  <demaille@gostai.com>
+
+	Introduce make_symbol.
+	make_symbol provides a means to construct a full symbol (kind,
+	value, location) in a single shot.  It is meant to be a Symbol
+	constructor, parameterized by the symbol kind so that overloading
+	would prevent incorrect kind/value pairs.  Unfortunately
+	parameterized constructors do not work well in C++ (unless the
+	parameter also appears as an argument, which is not acceptable),
+	hence the use of a function instead of a constructor.
+
+	* data/lalr1.cc (b4_symbol_constructor_declaration_)
+	(b4_symbol_constructor_declarations)
+	(b4_symbol_constructor_specialization_)
+	(b4_symbol_constructor_specializations)
+	(b4_symbol_constructor_definition_)
+	(b4_symbol_constructor_definitions): New.
+	Use them where appropriate to generate declaration, declaration of
+	the specializations, and implementations of the templated
+	overloaded function "make_symbol".
+	(variant::variant): Always define a default ctor.
+	Also provide a copy ctor.
+	(symbol_base_type, symbol_type): New ctor overloads for value-less
+	symbols.
+	(symbol_type): Now public, so that functions such as yylex can use
+	it.
+
+2008-11-11  Akim Demaille  <demaille@gostai.com>
+
+	Inform m4 whether a tag is a valid id.
+	* src/output.c (is_identifier): New.
+	(symbol_definitions_output): Use it to define tag_is_id.
+	But maybe this should be done at m4 level?
+
+2008-11-11  Akim Demaille  <demaille@gostai.com>
+
+	Test 214 was failing: it greps with a pattern containing [     ]*
+	which obviously meant to catch spaces and tabs, but contained only
+	spaces. Tabulations in sources are a nuisance, so to simplify the
+	matter, get rid of all the tabulations in the Java sources.  The
+	other skeletons will be treated equally later.
+
+	* data/java.m4, data/lalr1.java: Untabify.
+	* tests/java.at: Simplify AT_CHECK_JAVA_GREP invocations:
+	tabulations are no longer generated.
+
+2008-11-11  Paolo Bonzini  <bonzini@gnu.org>
+
+	* bootstrap.conf: Replace m4/warning.m4 with warnings module.
+	* configure.ac: Adjust usage.
+	* lib/Makefile.am: Replace $(WARNING_CFLAGS) with $(WARN_CFLAGS).
+	* src/Makefile.am: Replace $(WARNING_CFLAGS) with $(WARN_CFLAGS).
+	* tests/atlocal.in: Replace $(WARNING_*FLAGS) with $(WARN_*FLAGS).
+
+2008-11-10  Di-an Jan  <dianj@freeshell.org>
+
+	Workaround Java's ``code too large'' problem for parser tables
+	in most cases, by using one function per initialization.
+	* data/java.m4 (b4_typed_parser_table, b4_integral_parser_table): New.
+	* data/lalr1.java (yypact_, yydefact_, yypgoto_, yydefgoto_,
+	yytable_, yycheck_, yystos_, yytoken_number_, yyr1_, yyr2_, yyrhs_
+	yyprhs_, yyrline_, yytranslate_table_): Use b4_integral_parser_table.
+	(yytname_): Use b4_typed_parser_table.
+	* doc/bison.texinfo (Java Bison Interface): Add note on Java's
+	``code too large'' error.
+
+2008-11-10  Di-an Jan  <dianj@freeshell.org>
+
+	* NEWS: Document them.
+
+	General Java skeleton improvements.
+	* configure.ac (gt_JAVACOMP): Request target of 1.4, which allows
+	using gcj < 4.3 in the testsuite, according to comments in
+	gnulib/m4/javacomp.m4.
+	* data/java.m4 (stype, parser_class_name, lex_throws, throws,
+	location_type, position_type): Remove extraneous brackets from
+	b4_percent_define_default.
+	(b4_lex_param, b4_parse_param): Remove extraneous brackets from
+	m4_define and m4_define_default.
+	* data/lalr1.java (b4_pre_prologue): Change to b4_user_post_prologue,
+	which marks the end of user code with appropriate syncline, like all
+	the other skeletons.
+	(b4_user_post_prologue): Add.  Don't silently drop.
+	(yylex): Remove.
+	(parse): Inline yylex.
+	* doc/bison.texinfo (bisonVersion, bisonSkeleton): Document.
+	(%{...%}): Fix typo of %code imports.
+	* tests/java.at (AT_JAVA_COMPILE): Add "java" keyword.
+
+	Support annotations on parser class with %define annotations.
+	* data/lalr1.java (annotations): Add to parser class modifier.
+	* doc/bison.texinfo (Java Parser Interface): Document
+	%define annotations.
+	(Java Declarations Summary): Document %define annotations.
+	* tests/java.at (Java parser class modifiers): Test annotations.
+
+	Do not generate code for %error-verbose unless requested.
+	* data/lalr1.java (errorVerbose): Rename to yyErrorVerbose.
+	Make private.  Make conditional on %error-verbose.
+	(getErrorVerbose, setErrorVerbose): New.
+	(yytnamerr_): Make conditional on %error-verbose.
+	(yysyntax_error): Make some code conditional on %error-verbose.
+	* doc/bison.texinfo (Java Bison Interface): Remove the parts
+	about %error-verbose having no effect.
+	(getErrorVerbose, setErrorVerbose): Document.
+
+	Move constants for token names to Lexer interface.
+	* data/lalr1.java (Lexer): Move EOF, b4_token_enums(b4_tokens) here.
+	* data/java.m4 (b4_token_enum): Indent for move to Lexer interface.
+	(parse): Qualify EOF to Lexer.EOF.
+	* doc/bison.texinfo (Java Parser Interface): Move documentation of
+	EOF and token names to Java Lexer Interface.
+	* tests/java.at (_AT_DATA_JAVA_CALC_Y): Remove Calc qualifier.
+
+	Make yyerror public.
+	* data/lalr1.java (Lexer.yyerror): Use longer parameter name.
+	(yyerror): Change to public.  Add Javadoc comments.  Use longer
+	parameter names.  Make the body rather than the declarator
+	conditional on %locations.
+	* doc/bison.texinfo (yyerror): Document.  Don't mark as protected.
+
+	Allow user to add code to the constructor with %code init.
+	* data/java.m4 (b4_init_throws): New, for %define init_throws.
+	* data/lalr1.java (YYParser.YYParser): Add b4_init_throws.
+	Add %code init to the front of the constructor body.
+	* doc/bison.texinfo (YYParser.YYParser): Document %code init
+	and %define init_throws.
+	(Java Declarations Summary): Document %code init and
+	%define init_throws.
+	* tests/java.at (Java %parse-param and %lex-param): Adjust grep.
+	(Java constructor init and init_throws): Add tests.
+
+2008-11-10  Akim Demaille  <demaille@gostai.com>
+
+	Update TODO.
+	* TODO (-D): is implemented.
+	(associativity): Same precedence must have the same associativity.
+	For instance, how can a * b / c be parsed if * is %left and / is
+	%right?
+	(YYERRORCODE, YYFAIL, YYBACKUP): New.
+
+2008-11-10  Akim Demaille  <demaille@gostai.com>
+
+	Formatting changes.
+
+2008-11-10  Akim Demaille  <demaille@gostai.com>
+
+	More information about the symbols.
+	* src/output.c (type_names_output): Document all the symbols,
+	including those that don't have a type-name.
+	(symbol_definitions_output): Define "is_token" and
+	"has_type_name".
+	* data/lalr1.cc (b4_type_action_): Skip symbols that have an empty
+	type-name, now that they are defined too in b4_type_names.
+
+2008-11-10  Akim Demaille  <demaille@gostai.com>
+
+	Regen.
+
+2008-11-10  Akim Demaille  <demaille@gostai.com>
+
+	Make parser::yytranslate static.
+	Small speedup (1%) on the list grammar.  And makes yytranslate_
+	available in non member functions.
+
+	* data/lalr1.cc (yytranslate_): Does not need to be a instance
+	function.
+
+2008-11-10  Akim Demaille  <demaille@gostai.com>
+
+	Avoid trailing spaces.
+	* data/c.m4: b4_comment(TEXT): Don't indent empty lines.
+	* data/lalr1.cc: Don't indent before rule and symbol actions, as
+	they can be empty, and anyway this incorrectly indents the first
+	action.
+
+2008-11-10  Akim Demaille  <demaille@gostai.com>
+
+	Comment changes.
+
+2008-11-10  Akim Demaille  <demaille@gostai.com>
+
+	Use "enum" for integral constants.
+	This is just nicer to read, I observed no speedup.
+
+	* data/lalr1.cc (yyeof_, yylast_, yynnts_, yyempty_, yyfinal_)
+	(yterror_, yyerrcode_, yyntokens_): Define as members of an enum.
+	(yyuser_token_number_max_, yyundef_token_): Move into...
+	(yytranslate_): here.
+
+2008-11-10  Akim Demaille  <demaille@gostai.com>
+
+	Shortcuts in bench directives.
+	* etc/bench.pl.in (parse_dirs): New.
+	Use it.
+	(bench_variant_parser, bench_fusion_parser): Use %s and %d.
+	Create the benches in "benches/".
+
+2008-11-10  Akim Demaille  <demaille@gostai.com>
+
+	Formatting changes.
+	* data/lalr1.cc: here.
+
+2008-11-10  Akim Demaille  <demaille@gostai.com>
+
+	Adjust verbose message to using emacs.
+	* etc/bench.pl.in: Inform compilation-mode when we change the
+	directory.
+	(generate_grammar_list): Recognize %define "variant" in addition
+	to %define variant.
+
+2008-11-10  Akim Demaille  <demaille@gostai.com>
+
+	Classify symbols by type-name.
+	* src/uniqstr.h (UNIQSTR_CMP): New.
+	* src/output.c (symbol_type_name_cmp, symbols_by_type_name)
+	(type_names_output): New.
+	(muscles_output): Use it.
+	* data/lalr1.cc (b4_symbol_action_): Remove.
+	(b4_symbol_case_, b4_type_action_): New.
+	Adjust uses of b4_symbol_action_ to use b4_type_action_.
+
+2008-11-10  Akim Demaille  <demaille@gostai.com>
+
+	Change the handling of the symbols in the skeletons.
+	Before we were using tables which lines were the symbols and which
+	columns were things like number, tag, type-name etc.  It is was
+	difficult to extend: each time a column was added, all the numbers had
+	to be updated (you asked for colon $2, not for "tag").  Also, it was
+	hard to filter these tables when only a subset of the symbols (say the
+	tokens, or the nterms, or the tokens that have and external number
+	*and* a type-name) was of interest.
+
+	Now instead of monolithic tables, we define one macro per cell.  For
+	instance "b4_symbol(0, tag)" is a macro name which contents is
+	self-decriptive.  The macro "b4_symbol" provides easier access to
+	these cells.
+
+	* src/output.c (type_names_output): Remove.
+	(symbol_numbers_output, symbol_definitions_output): New.
+	(muscles_output): Call them.
+	(prepare_symbols): Define b4_symbols_number.
+
+2008-11-10  Akim Demaille  <demaille@gostai.com>
+
+	--trace=muscles
+	* src/getargs.h, src/getargs.c (trace_muscle): New.
+	(trace_types, trace_args): Support it.
+	* src/output.c (output_skeleton): Use it.
+
+2008-11-10  Akim Demaille  <demaille@gostai.com>
+
+	muscles_output.
+	* src/output.c (muscles_output): New, extracted from...
+	(output_skeleton): here.
+	Adjust.
+
+2008-11-10  Akim Demaille  <demaille@gostai.com>
+
+	Formatting changes.
+
+2008-11-10  Akim Demaille  <demaille@gostai.com>
+
+	Update the variant example.
+	* examples/variant.yy: Formatting changes.
+	One stage build.
+
+2008-11-10  Akim Demaille  <demaille@gostai.com>
+
+	Support constructor with an argument.
+	This improves the "list" bench by 2%.
+
+	* data/lalr1.cc (variant::build): Add an overloaded version with
+	an argument.
+	* tests/c++.at (AT_CHECK_VARIANT): Check it.
+
+2008-11-10  Akim Demaille  <demaille@gostai.com>
+
+	Test variants.
+	* tests/c++.at (AT_CHECK_VARIANTS): New.
+	Use it with and without %define assert.
+
+2008-11-10  Akim Demaille  <demaille@gostai.com>
+
+	Add %precedence support.
+	Unfortunately it is not possible to reuse the %prec directive.  This
+	is because to please POSIX, we do not require to end the rules with a
+	semicolon.  As a result,
+
+	foo: bar %prec baz
+
+	is ambiguous: either a rule which precedence is that of baz, or a rule,
+	and then a declaration of the precedence of the token baz.
+
+	* doc/bison.texinfo: Document %precedence.
+	(Precedence Only): New.
+	* src/assoc.h, src/assoc.c (precedence_assoc): New.
+	* src/conflicts.c (resolve_sr_conflict): Support it.
+	* src/scan-gram.l, src/parse-gram.y (%precedence): New token.
+	Parse it.
+	* tests/calc.at: Use %precedence for NEG.
+	* tests/conflicts.at (%precedence does not suffice)
+	(%precedence suffices): New tests.
+
+2008-11-09  Akim Demaille  <demaille@gostai.com>
+
+	Make benches in a sub dirs.
+	* etc/bench.pl.in ($dir): New.
+	Use it.
+	Check the use of constructors with an argument.
+	(bench_variant_parser): Fix.
+
+2008-11-09  Akim Demaille  <demaille@gostai.com>
+
+	fix eof condition
+
+2008-11-09  Akim Demaille  <demaille@gostai.com>
+
+	Fix --help.
+
+2008-11-09  Akim Demaille  <demaille@gostai.com>
+
+	Require the generation of parse-gram.output.
+	* src/Makefile.am (YACC): Pass --report=all.
+
+2008-11-09  Akim Demaille  <demaille@gostai.com>
+
+	Formatting changes.
+
+2008-11-09  Akim Demaille  <demaille@gostai.com>
+
+	Update TODO.
+	* TODO: Remove obsolete items.
+	Update others.
+
+2008-11-09  Akim Demaille  <demaille@gostai.com>
+
+	Enhance bench.pl.
+	* etc/bench.pl.in (parse, parse_expr, parse_term, parse_fact)
+	(@token, $grammar, $bench): New.
+	(generate_grammar_variant): Rename as...
+	(generate_grammar_list): this.
+	(generate_grammar): Adjust.
+	(bench_grammar): Rename as...
+	(bench): this.
+	Use it in the various bench-marking routines.
+	(-b, -g): New options.
+
+2008-11-09  Akim Demaille  <demaille@gostai.com>
+
+	Use a static hierarchy for symbols in the C++ parser.
+	* data/lalr1.cc (symbol_base_type, symbol_type)
+	(stack_symbol_type): Make it a static hierarchy.
+	Adjust dependencies.
+
+2008-11-09  Akim Demaille  <demaille@gostai.com>
+
+	bench.pl -d, --directive.
+	* etc/bench.pl.in (@directive): New.
+	(&bench_grammar): Use it.
+	(&bench_list_grammar): New, to provide access to the "variant"
+	grammar.
+	Use it.
+	(getopts): Support -d, --directive.
+
+2008-11-09  Akim Demaille  <demaille@gostai.com>
+
+	Use inline for small operations.
+	* data/lalr1.cc (symbol_base_type, symbol_type)
+	(stack_symbol_type): Declare constructor and other operations as
+	inline.
+	(yy_destroy_): Inline.
+
+2008-11-09  Akim Demaille  <demaille@gostai.com>
+
+	Introduce a hierarchy for symbols.
+	* data/lalr1.cc (symbol_base_type, symbol_type): New.
+	(data_type): Rename as...
+	(stack_symbol_type): this.
+	Derive from symbol_base_type.
+	(yy_symbol_value_print_): Merge into...
+	(yy_symbol_print_): this.
+	Rename as...
+	(yy_print_): this.
+	(yydestruct_): Rename as...
+	(yy_destroy_): this.
+	(b4_symbols_actions, YY_SYMBOL_PRINT): Adjust.
+	(parser::parse): yyla is now of symbol_type.
+	Use its type member instead of yytoken.
+
+2008-11-09  Akim Demaille  <demaille@gostai.com>
+
+	Rename data_type and stack_symbol_type.
+	* data/lalr1.cc (data_type): Rename as...
+	(stack_symbol_type): this.
+
+2008-11-09  Akim Demaille  <demaille@gostai.com>
+
+	Handle semantic value and location together.
+	* data/lalr1.cc (b4_symbol_actions): Bounce $$ and @$ to
+	yydata.value and yydata.location.
+	(yy_symbol_value_print_, yy_symbol_print_, yydestruct_)
+	(YY_SYMBOL_PRINT): Now take semantic value and location as a
+	single arg.
+	Adjust all callers.
+	(yydestruct_): New overload for a stack symbol.
+
+2008-11-09  Akim Demaille  <demaille@gostai.com>
+
+	Push a complete symbol, not connected parts.
+	* data/lalr1.cc (yypush_): Take a data_type&, not disconnected
+	state, value and location.
+	Adjust callers.
+
+2008-11-09  Akim Demaille  <demaille@gostai.com>
+
+	Agregate yylval and yylloc.
+	* data/lalr1.cc (parser::yylval, parser::yylloc): Replace by...
+	(parser::yyla): this.
+
+2008-11-09  Akim Demaille  <demaille@gostai.com>
+
+	Rely on the state stack to display reduction traces.
+	To display rhs symbols before a reduction, we used information
+	about the rule reduced, which required the tables yyrhs and
+	yyprhs.  Now use rely only on the state stack to get the same
+	information.
+
+	* data/lalr1.cc (b4_rhs_data, b4_rhs_state): New.
+	Use them.
+	(parser::yyrhs_, parser::yyprhs_): Remove.
+	(parser::yy_reduce_print_): Use the state stack.
+
+2008-11-09  Akim Demaille  <demaille@gostai.com>
+
+	Fuse yyval and yyloc into yylhs.
+	* data/lalr1.cc (b4_lhs_value, b4_lhs_location): Adjust to using
+	yylhs.
+	(parse): Replace yyval and yyloc with yylhs.value and
+	yylhs.location.
+	After a user action, compute yylhs.state earlier.
+	(yyerrlab1): Do not play tricks with yylhs.location, rather, use a
+	fresh error_token.
+
+2008-11-09  Di-an Jan  <dianj@freeshell.org>
+
+	Remove unused variable.
+	* src/output.c (type_names_output): Remove unused variable sep.
+
+2008-11-09  Paolo Bonzini  <bonzini@gnu.org>
+
+	Change tests/output.at quoting.
+	* tests/output.at (AT_CHECK_OUTPUT): Use conventional m4 quoting when
+	expanding arguments.
+
+2008-11-07  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Don't add a semicolon to actions for %skeleton or %language.
+	It breaks Java test cases as reported by Akim Demaille.
+	* src/scan-code.l: Implement.
+
+2008-11-07  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Clean up %skeleton and %language priority implementation.
+	* src/getargs.c (skeleton_prio): Use default_prio rather than 2, and
+	remove static qualifier because others will soon need to see it.
+	(language_prio): Likewise.
+	(getargs): Use command_line_prio rather than 0.
+	* src/getargs.h (command_line_prio, grammar_prio, default_prio): New
+	enum fields.
+	(skeleton_prio): Extern it.
+	(language_prio): Extern it.
+	* src/parse-gram.y: Use grammar_prio rather than 1.
+
+2008-11-07  Akim Demaille  <demaille@gostai.com>
+
+	Moving push traces into yypush_.
+	* data/lalr1.cc (yypush_): Now takes a optional trace message.
+	Adjust all uses.
+
+2008-11-07  Akim Demaille  <demaille@gostai.com>
+
+	The single-stack C++ parser is now the standard one.
+	* data/lalr1.cc: Rename as...
+	* data/lalr1-split.cc: this.
+	* data/lalr1-fusion.cc: Rename as...
+	* data/lalr1.cc: this.
+	* etc/bench.pl.in: Adjust.
+
+2008-11-07  Akim Demaille  <demaille@gostai.com>
+
+	Avoid empty-if warnings.
+	Reported by Quentin Hocquet.
+
+	* data/lalr1-fusion.cc (YY_SYMBOL_PRINT, YY_REDUCE_PRINT)
+	(YY_STACK_PRINT): Provide some contents even when !YYDEBUG.
+
+2008-11-07  Akim Demaille  <demaille@gostai.com>
+
+	Pass command line location to skeleton_arg and language_argmatch.
+	* src/getargs.h, src/getargs.c (skeleton_arg, language_argmatch):
+	The location argument is now mandatory.
+	Adjust all dependencies.
+	(getargs): Use command_line_location.
+
+2008-11-07  Akim Demaille  <demaille@gostai.com>
+
+	-D, --define.
+	* src/getargs.c (usage): Document -D.
+	Fix help string for --locations.
+	(command_line_location): New.
+	(short_options, long_options, getargs): Support -D, --define.
+	(getargs): Move -d support at the right place.
+	* doc/bison.texinfo (Bison Options): Update.
+	* tests/input.at (%define, --define): New.
+
+2008-11-07  Akim Demaille  <demaille@gostai.com>
+
+	Initialize the muscle table before parsing the command line.
+	* src/getargs.c (quotearg.h, muscle_tab.h): Include.
+	(getargs): Define file_name.
+	* src/main.c (main): Initialize muscle_tab before calling
+	getargs.
+	* src/muscle_tab.c (muscle_init): No longer define file_name, as
+	its value is not available yet.
+
+2008-11-07  Akim Demaille  <demaille@gostai.com>
+
+	Locations without columns for command line arguments.
+	* src/location.c (location_print): Don't display negative columns.
+	* src/location.h: Document this.
+
+2008-11-07  Akim Demaille  <demaille@gostai.com>
+
+	Fix --help.
+	* src/getargs.c (usage): Fix help string for -W.
+
+2008-11-07  Akim Demaille  <demaille@gostai.com>
+
+	Handle more general types of option arguments.
+	* build-aux/cross-options.pl: The argument ends at the first
+	space, not the first non-symbol character.
+	Use @var for each word appearing the argument description.
+
+2008-11-07  Akim Demaille  <demaille@gostai.com>
+
+	Destroy the variants that remain on the stack in case of error.
+	* data/lalr1-fusion.cc (yydestruct_): Invoke the variant's
+	destructor.
+	Display the value only if yymsg is nonnull.
+	(yyreduce): Invoke yydestruct_ when popping lhs symbols.
+
+2008-11-07  Akim Demaille  <demaille@gostai.com>
+
+	Add "%define assert" to variants.
+	This is used to help the user catch cases where some value gets
+	ovewritten by a new one.  This should not happen, as this will
+	probably leak.
+
+	Unfortunately this uncovered a bug in the C++ parser itself: the
+	lookahead value was not destroyed between two calls to yylex.  For
+	instance if the previous lookahead was a std::string, and then an int,
+	then the value of the std::string was correctly taken (i.e., the
+	lookahead was now an empty string), but std::string structure itself
+	was not reclaimed.
+
+	This is now done in variant::build(other&) (which is used to take the
+	value of the lookahead): other is not only stolen from its value, it
+	is also destroyed.  This incurs a new performance penalty of a few
+	percent, and union becomes faster again.
+
+	* data/lalr1-fusion.cc (variant::build(other&)): Destroy other.
+	(b4_variant_if): New.
+	(variant::built): New.
+	Use it whereever the status of the variant changes.
+	* etc/bench.pl.in: Check the penalty of %define assert.
+
+2008-11-07  Akim Demaille  <demaille@gostai.com>
+
+	Use "%define variant" in bench.pl.
+	* etc/bench.pl.in: No longer use the pseudo directive %variants,
+	just use %define variants.
+
+2008-11-07  Akim Demaille  <demaille@gostai.com>
+
+	Regen.
+	* src/parse-gram.h, src/parse-gram.c: Regen.
+
+2008-11-04  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Fix user actions without a trailing semicolon.
+	Reported by Sergei Steshenko at
+	<http://lists.gnu.org/archive/html/bug-bison/2008-11/msg00001.html>.
+	* THANKS (Sergei Steshenko): Add.
+	* src/scan-code.l (SC_RULE_ACTION): Fix it.
+	* tests/regression.at (Fix user actions without a trailing semicolon):
+	New test case.
+
+2008-11-04  Akim Demaille  <demaille@gostai.com>
+
+	Use b4_copyright_years.
+	* data/yacc.c (b4_copyright_years): New.
+	Fix its value according to the comments in the file.
+	Use it and undefine it.
+
+2008-11-04  Akim Demaille  <demaille@gostai.com>
+
+	Formatting changes.
+	* data/lalr1-fusion.cc, src/parse-gram.y: here.
+
+2008-11-04  Akim Demaille  <demaille@gostai.com>
+
+	Formatting changes.
+	* data/lalr1-fusion.cc: here.
+
+2008-11-04  Akim Demaille  <demaille@gostai.com>
+
+	Use strict on bench.pl.
+	* etc/bench.pl.in (&run, &generate_grammar): New.
+	Rename the grammar generating functions for consistency.
+	Change the interface so that the list of benches to run is passed
+	as (optionless) arguments.
+	(&compile): Use &run.
+
+2008-11-04  Akim Demaille  <demaille@gostai.com>
+
+	Remove spurious initial empty lines.
+	* data/glr.c, data/glr.cc, data/lalr1.cc, data/lalr1.java,
+	* data/yacc.c: End the @output lines with an @.
+
+2008-11-04  Akim Demaille  <demaille@gostai.com>
+
+	Improve the display of sizes.
+	* etc/bench.p.in: Higher precision.
+	Sort by decreasing size.
+
+2008-11-04  Akim Demaille  <demaille@gostai.com>
+
+	Don't memcpy C++ structures.
+	* data/lalr1-fusion.cc (b4_symbol_variant): Adjust additional
+	arguments.
+	(variant::build): New overload for
+	copy-construction-that-destroys.
+	(variant::swap): New.
+	(parser::yypush_): Use it in variant mode.
+
+2008-11-04  Akim Demaille  <demaille@gostai.com>
+
+	Better defaults for bench.pl.
+	* etc/bench.pl.in ($verbose, $cflags, $iterations): Change the
+	default values.
+	Adjust &verbose uses.
+	(-q, --quiet): New.
+
+2008-11-04  Akim Demaille  <demaille@gostai.com>
+
+	Make variant.yy more complex.
+	std::list cannot be copied via memcpy, they are more demanding than
+	std::string.  Use one std::list to strengthen the test.
+
+	* examples/variant.yy: Use lalr1-fusion.cc, not lalr1.cc.
+	Adjust.
+	Create a list of strings, instead of a single large string.
+
+2008-11-04  Akim Demaille  <demaille@gostai.com>
+
+	bench.pl --bench.
+	* etc/bench.pl.in (--bench, $bench): New.
+
+2008-11-04  Akim Demaille  <demaille@gostai.com>
+
+	Sort methods.
+	* data/lalr1-fusion.cc (destroy): Use as() in its definition.
+	Define it after as().
+
+2008-11-04  Akim Demaille  <demaille@gostai.com>
+
+	Useless parens.
+	* data/lalr1-fusion.cc (b4_rhs_location): Remove useless parens.
+
+2008-11-04  Akim Demaille  <demaille@gostai.com>
+
+	Issue missing synclines after user actions.
+	* data/c.m4 (b4_case): Issue synclines on the output file.
+
+2008-11-04  Akim Demaille  <demaille@gostai.com>
+
+	Remove trailing empty line.
+	* data/lalr1-fusion.cc: Don't add an empty line after the user's
+	epilogue.
+
+2008-11-04  Akim Demaille  <demaille@gostai.com>
+
+	Fix output of copyright years.
+	* data/bison.m4 (b4_copyright): Fix the indentation of the
+	copyright year paragraph.
+	Use b4_copyright_years when no years are given.
+	* data/lalr1.cc, data/lalr1-fusion.cc, data/location.cc
+	(b4_copyright_years): New.
+	Use it.
+
+2008-11-04  Akim Demaille  <demaille@gostai.com>
+
+	Avoid the spurious initial empty line.
+	* data/lalr1-fusion.cc, data/location.cc: Put a trailing "@" at
+	the end of @output request to suppress the empty line that
+	results.
+
+2008-11-04  Akim Demaille  <demaille@gostai.com>
+
+	Remove parser::rhs_number_type.
+	* data/lalr1-fusion.cc (rhs_number_type): No longer define it.
+	(yyrhs_): Use b4_table_define.
+
+2008-11-04  Akim Demaille  <demaille@gostai.com>
+
+	Fix iteration type.
+	* data/lalr1-fusion.cc: Use an int to iterate up to an int.
+
+2008-11-04  Akim Demaille  <demaille@gostai.com>
+
+	Factor the declaration of the integer tables.
+	* data/lalr1-fusion.cc (b4_table_define): New.
+	Use it.
+
+2008-11-03  Akim Demaille  <demaille@gostai.com>
+
+	Fix indentation of tables in lalr1.cc
+	* data/lalr1-fusion.cc: Fix the indentation.
+
+2008-11-03  Akim Demaille  <demaille@gostai.com>
+
+	Destroy the lhs symbols after reduction.
+	* data/lalr1-fusion.cc (parse): After the user action, when in
+	variant mode, destroy the lhs symbols.
+
+2008-11-03  Akim Demaille  <demaille@gostai.com>
+
+	Simplify yysyntax_error_ use.
+	* data/lalr1-fusion.cc (yysyntax_error_): Always pass it the token
+	type, but make it unnamed in the declaration when it is not used.
+
+2008-11-03  Akim Demaille  <demaille@gostai.com>
+
+	Let yy::variant::build return an lvalue.
+	* data/lalr1-fusion.cc (variant::build): Return a reference to the
+	object.
+
+2008-11-03  Akim Demaille  <demaille@gostai.com>
+
+	Define yy::variant only when needed.
+	* data/lalr1-fusion.cc (yy::variant): Define only if variants are
+	used.
+
+2008-11-03  Akim Demaille  <demaille@gostai.com>
+
+	Bench the three-stack lalr1.cc.
+	* etc/bench.pl.in: Bench the three-stack lalr1.cc vs. the
+	one-stack one.
+
+2008-11-03  Akim Demaille  <demaille@gostai.com>
+
+	Fail on parse error in calc++.
+	* doc/bison.texinfo (calc++.cc): Propagate failures to the exit
+	status.
+	* examples/calc++/test ($me, $number, $exit, run): New.
+	Use them to propagate errors to the exit status.
+
+2008-11-03  Akim Demaille  <demaille@gostai.com>
+
+	Don't specify the skeleton twice in the example.
+	* examples/calc++/Makefile.am: Don't pass -S to Bison, the grammar
+	file does what is needed.
+
+2008-11-03  Akim Demaille  <demaille@gostai.com>
+
+	bench: Improve output.
+	* etc/bench.pl.in (bench_grammar): Tune the printf format.
+
+2008-11-03  Akim Demaille  <demaille@gostai.com>
+
+	bench: check impact of %debug on variants.
+	* etc/bench.pl.in (variant_grammar): Fix the computation of
+	$variant.
+	Generate a grammar file that can work with or without %debug.
+	Do use the @directive.
+	(bench_variant_parser): Check impact of %debug.
+	(@directives): Rename all the occurrences to...
+	(@directive): this, for consistency.
+
+2008-11-03  Akim Demaille  <demaille@gostai.com>
+
+	bench: report the size too.
+	* etc/bench.pl.in ($iterations): Defaults to -3.
+	(&bench_grammar): Require hireswallclock.
+	Compute and display the size of the result.
+	More comments.
+
+2008-11-03  Akim Demaille  <demaille@gostai.com>
+
+	bench: More use of the verbosity level.
+	* etc/bench.pl.in ($verbose, &verbose): New.
+	Use them.
+	More POD documentation.
+
+2008-11-03  Akim Demaille  <demaille@gostai.com>
+
+	bench.pl: a command line interface
+	* etc/bench.pl.in: More doc.
+	Some fixes in the documentation.
+	($cflags, $iterations, &help, &getopt): New.
+	Use them.
+	(&variant_grammar): Let the number of stages be 10 times what is
+	specified.
+
+2008-11-03  Akim Demaille  <demaille@gostai.com>
+
+	Bench the use of Boost.Variants.
+	* etc/bench.pl.in ($cxx, &variant_grammar, &bench_variant_parser):
+	New.
+	(&compile): Be ready to compile C++ parsers.
+	(&bench_push_parser): Move debug information to the outermost
+	level.
+	* THANKS: Add Michiel De Wilde.
+
+2008-11-03  Akim Demaille  <demaille@gostai.com>
+
+	bench.pl: Pass directives as a list instead of as a string.
+	* etc/bench.pl.in (&directives): New.
+	(&triangular_grammar, &calc_grammar): Use it to format the Bison
+	directives.
+	(&triangular_grammar): Do use the directives (were ignored).
+	(&bench_grammar, &bench_push_parser): Adjust to pass lists of
+	directives.
+
+2008-11-03  Akim Demaille  <demaille@gostai.com>
+
+	Improve genericity of bench.pl.
+	* etc/bench.pl.in (&bench_grammar): Take the set of benches as
+	argument.
+	(&bench_push_parser): New.
+	Call it.
+
+2008-11-03  Akim Demaille  <demaille@gostai.com>
+
+	Add documentation to bench.pl.
+	* etc/bench.pl.in: Comment changes.
+
+2008-11-03  Akim Demaille  <demaille@gostai.com>
+
+	Fuse the three stacks into a single one.
+
+	In order to make it easy to perform benchmarks to ensure that
+	there are no performance loss, lalr1.cc is forked into
+	lalr1-fusion.cc.  Eventually, lalr1-fusion.cc will replace
+	lalr1.cc.
+
+	Meanwhile, to make sure that lalr1-fusion.cc is correctly
+	exercized by the test suite, the user must install a symbolic link
+	from lalr1.cc to it.
+
+	Instead of having three stacks (state, value, location), use a
+	stack of triples.  This considerably simplifies the code (and it
+	will be easier not to require locations as currently does the C++
+	parser), and also gives a 10% speedup according to
+	etc/bench (probably mainly since memory allocation is done once
+	instead of three times).
+
+	Another motivation is to make it easier to destruct properly
+	semantic values: now that they are bound to their state (hence
+	symbol type) it will be easier to call the appropriate destructor.
+
+	These changes should probably benefit the C parser too.
+
+	* data/lalr1.cc: Copy as...
+	* data/lalr1-fusion.cc: this new file.
+	(b4_rhs_value, b4_rhs_location): New definitions overriding those
+	from c++.m4.
+	(state_stack_type, semantic_stack_type, location_stack_type)
+	(yystate_stack_, yysemantic_stack_, yylocation_stack_): Remove.
+	(data_type, stack_type, yystack_): New.
+	(YYLLOC_DEFAULT, yypush_): Adjust.
+	(yyerror_range): Now based on data_type, not location_type.
+
+2008-11-03  Akim Demaille  <demaille@gostai.com>
+
+	Push the state, value, and location at the same time.
+	This is needed to prepare a forthcoming patch that fuses the three
+	stacks into one.
+
+	* data/lalr1.cc (parser::yypush_): New.
+	(parser::yynewstate): Change the semantics: instead of arriving to
+	this label when value and location have been pushed, but yystate
+	is to be pushed on the state stack, now the three of them must
+	have been pushed before.  yystate still must be the new state.
+	This allows to use yypush_ everywhere instead of individual
+	handling of the stacks.
+
+2008-11-03  Akim Demaille  <demaille@gostai.com>
+
+	Prefer references to pointers.
+	* data/lalr1.cc (b4_symbol_actions): New, overrides the default C
+	definition to use references instead of pointers.
+	(yy_symbol_value_print_, yy_symbol_print_, yydestruct_):
+	Take the value and location as references.
+	Adjust callers.
+
+2008-11-03  Akim Demaille  <demaille@gostai.com>
+
+	stack::size instead of stack::height.
+	* data/lalr1.cc (stack::height): Rename as...
+	(stack::size): this.
+	Fix the output type.
+	Comment changes.
+
+2008-11-03  Akim Demaille  <demaille@gostai.com>
+
+	Use variants to support objects as semantic values.
+	This patch was inspired by work by Michiel De Wilde.  But he used
+	Boost variants which (i) requires Boost on the user side, (ii) is
+	slow, and (iii) has useless overhead (the parser knows the type of
+	the semantic value there is no reason to duplicate this
+	information as Boost.Variants do).
+
+	This implementation reserves a buffer large enough to store the
+	largest objects.  yy::variant implements this buffer.  It was
+	implemented with Quentin Hocquet.
+
+	* src/output.c (type_names_output): New.
+	(output_skeleton): Invoke it.
+	* data/c++.m4 (b4_variant_if): New.
+	(b4_symbol_value): If needed, provide a definition for variants.
+	* data/lalr1.cc (b4_symbol_value, b4_symbol_action_)
+	(b4_symbol_variant, _b4_char_sizeof_counter, _b4_char_sizeof_dummy)
+	(b4_char_sizeof, yy::variant): New.
+	(parser::parse): If variants are requested, define
+	parser::union_type, parser::variant, change the definition of
+	semantic_type, construct $$ before running the user action instead
+	of performing a default $$ = $1.
+	* examples/variant.yy: New.
+	Based on an example by Michiel De Wilde.
+
+2008-11-03  Akim Demaille  <demaille@gostai.com>
+
+	Parameterize the extraction of semantic values.
+	To make future changes easier, no longer rely on ".TYPE" being the
+	way to get a semantic value.
+
+	* data/c.m4 (b4_symbol_value): New.
+	Use it.
+	* data/c++.m4, data/yacc.c: Use it.
+	* data/glr.c: Use b4_symbol_value.
+	(b4_rhs_data): New.
+	Use it.
+
+2008-11-03  Akim Demaille  <demaille@gostai.com>
+
+	Prepare easier M4 changes.
+	* data/lalr1.cc: Use escaped [] instead of literals to prepare
+	future changes.
+
+2008-11-02  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Initiate further development.
+	* NEWS: Create an empty section for new entries.
+	* gnulib: Update submodule to HEAD.
+
+2008-11-02  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* NEWS: Version 2.4.
+
+2008-11-02  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Prepare for next release.
+	* NEWS: Briefly mention changes since 2.3b.
+	* README: Say GNU m4 1.4.6, which we've been requiring in release
+	announcements already, not 1.4.3, which breaks the build.
+
+2008-11-02  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Say %language is experimental.
+	We're thinking of extending it's effect on output file naming.  See the
+	thread at
+	<http://lists.gnu.org/archive/html/bison-patches/2008-10/msg00003.html>.
+	* NEWS: Say it's experimental.
+	* doc/bison.texinfo (Decl Summary): Say it's experimental, and so don't
+	recommend it over %skeleton for now.
+	(Bison Options): Likewise.
+	(C++ Bison Interface): Use %skeleton not %language.
+	(Calc++ Parser): Use %skeleton not %language.
+	* src/getargs.c (usage): Say it's experimental.
+
+2008-11-01  Di-an Jan  <dianj@freeshell.org>
+	    Paolo Bonzini  <bonzini@gnu.org>
+
+	Support all Java parser class modifiers.
+	* data/java.m4 (b4_percent_define_get3): New.
+	(b4_final_if, b4_strictfp_if): New.
+	* data/lalr1.java (final, strictfp, extends, implements): Support.
+	* doc/bison.texinfo (final, strictfp, extends, implements): Add
+	documentation.
+	* tests/java.at (AT_CHECK_JAVA_MINIMAL): New.
+	(AT_CHECK_JAVA_MINIMAL_W_LEXER): New.
+	(AT_CHECK_JAVA_GREP): New.
+	(Java parser class modifiers): New test.
+	(Java parser class extends and implements): New test.
+
+	Model exception propagation better with throws and lex_throws.
+	* data/java.m4 (b4_list2): New.
+	(throws): Change default.
+	* data/lalr1.java (yyaction): Add throws.
+	(parse): Add lex_throws in addition to throws.
+	* doc/bison.texinfo (throws, lex_throws): Add documentation.
+	* tests/java.at (Java throws specifications): New test.
+
+	Improve documentation for Java parsers.
+	* doc/bison.texinfo (Java Parsers): Add subsections.
+	Don't quote first argument of %define.
+	(Java Bison Interface): Document output files.  Move documentation
+	of parser class and merge into Java Parser Interface.  Document
+	features that error out.  Document directives with no effect.
+	Move note about Javadoc higher.
+	(Java Semantic Values): Explicitly mention stype.
+	Document that generic types cannot be used.
+	(Java Location Values): Use @deftypeivar.  Document constructors.
+	Correct return value for toString.
+	(Java Parser Interface): List undocumented constants/fields.
+	Move documentation of fields added by %parse-param closer to list
+	of members.  Document that token names are added as fields.
+	Document constructors accurately.  Remove error method.
+	(Java Scanner Interface): Move note on %pure-parser to Java Bison
+	Interface.  Describe %code lexer and yylex accutately.
+	Remove documentation that does not match the code.
+	(Java Action Features): New.
+	(Java Differences): Add reference.  Add item on semantic values.
+	Add note about @{ ... @}.  Clarify %% epilogue placement.
+	(Java Declarations Summary): New.
+
+	Fix Java skeleton.
+	* data/java.m4 (b4_prefix): Correct quoting for m4_define_default.
+	(b4_remove_comma): Quote test argument.
+	(b4_identification): Remove "bison" field.
+	* tests/java.at (Java parser class and package names): New test.
+	(Java %parse-param and %lex-param): New test.
+	(Java stype, position_class and location_class): New test.
+
+2008-10-31  Di-an Jan  <dianj@freeshell.org>
+
+	* data/lalr1.jave: Update copyright years.
+	(YYParser): Correct name of "generated from" file in Javadoc:
+	use b4_file_name instead of @ofile@.
+	(Location constructor): Correct Javadoc parameter name.
+	(yylloc): Add missing opening m4 quote after b4_location_if.
+	This removes a stray [ in the Javadoc of Lexer.getStartPos.
+	(Lexer.yyerror): Fix incorrect m4 and Javadoc.
+	(YYParser constructor): Correct Javadoc parameter name.
+
+2008-10-30  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Always put auxiliary code files in the same dir as other output files.
+	* src/files.c (compute_file_name_parts): When the user specifies
+	--output but not --file-prefix, extract the directory prefix from the
+	file prefix not from the grammar file name.  This affects the location
+	of files like location.hh generated by the C++ skeleton.  The includes
+	in the other output files require this fix.
+	* tests/output.at (AT_CHECK_OUTPUT): Automatically create directories
+	for expected output files.
+	(Output files): Add a test for the above.
+
+2008-10-29  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* gnulib: Update submodule to HEAD.
+
+2008-10-28  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Update copyright year.
+	* src/files.c: Here.
+
+2008-10-28  Di-an Jan  <dianj@freeshell.org>  (tiny change)
+
+	Don't overwrite the input file.
+	* src/files.c (output_file_name_check): Fatal error if using input file
+	for output.
+	* tests/output.at: (AT_CHECK_CONFLICTING_OUTPUT): Add return status
+	argument.
+	(Conflicting output files): Add test.
+
+2008-10-28  Akim Demaille  <demaille@gostai.com>
+
+	Space changes.
+	* data/lalr1.cc: Formatting changes.
+
+2008-10-28  Akim Demaille  <demaille@gostai.com>
+
+	Don't define debugging functions when !YYDEBUG.
+	* data/lalr1.cc (debug_stream, set_debug_stream)
+	(debug_level_type, debug_level, set_debug_level): Don't
+	declare them when YYDEBUG is not defined.
+	The implementation are already YYDEBUG-aware.
+
+2008-10-28  Akim Demaille  <demaille@gostai.com>
+
+	Prefer "continue" for empty loop bodies.
+	* etc/bench.pl.in: Use "continue" instead of {}.
+
+2008-10-28  Akim Demaille  <demaille@gostai.com>
+
+	Space and comments changes.
+	* data/c++.m4, data/glr.c, data/lalr1.cc: Copyright year changes.
+	* data/c.m4, data/lalr1.cc: Space changes.
+
+2008-10-28  Akim Demaille  <demaille@gostai.com>
+
+	Make gnulib a submodule.
+	* gnulib: New.
+	* .gitmodules (gnulib): New.
+
+2008-10-18  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Fix yyerror_range for user-defined location type in C++.  Reported by
+	Georg Sauthoff at
+	<http://lists.gnu.org/archive/html/bug-bison/2008-08/msg00008.html>.
+	* data/lalr1.cc (parse): Change type of yyerror_range to location_type.
+	* THANKS (Georg Sauthoff): Add.
+
+2008-10-18  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Update several administrative files mainly to facilitate releasing.
+	* HACKING (Administrivia): Make the git-merge-changelog notes more
+	helpful.
+	(Test suite): Don't say lalr1.cc is not exercised in the test suite.
+	(Release Procedure): Update for git and add numerous details that were
+	previously missing.
+	* Makefile.am (EXTRA_DIST): Remove Makefile.cfg and Makefile.maint.
+	* maint.mk (announcement): Don't list bison as a bootstrap tool so
+	that announcements don't claim we bootstrapped with whatever bison
+	happened to be in PATH.  Add flex as a bootstrap tool.
+	* Makefile.maint: Remove, previously replaced by maint.mk.
+	* Makefile.cfg: Remove, and migrate settings to...
+	* cfg.mk: ... here for the sake of `make announcement'.
+	* bootstrap.conf (gnulib_modules): Add announce-gen.
+	* README: Say GNU Bison instead of just Bison.  Suggested by Karl
+	Berry.
+
+2008-10-08  Di-an Jan  <dianj@freeshell.org>  (tiny change)
+
+	Small but important bugfixes for the Java skeleton.
+	* data/lalr1.java (yyerror): Change Location to b4_location_type.
+	(yy_symbol_print): Call toString on yyvaluep.
+
+2008-08-29  Akim Demaille  <demaille@gostai.com>
+
+	Clarify UPDATED use.
+	* doc/bison.texinfo: It refers to the last edition of this file,
+	not to the release date of Bison.
+	Reported by Joel E. Denny.
+
+2008-08-29  Akim Demaille  <demaille@gostai.com>
+
+	* README: Update FAQ pointer.
+	Reported by Joel E. Denny.
+
+2008-08-27  Eric Blake  <ebb9@byu.net>
+
+	Resync m4sugar from autoconf.
+	* data/m4sugar/m4sugar.m4 (m4_defn, m4_popdef, m4_undefine)
+	(m4_init): Adjust to latest m4.git changes.
+	(m4_mapall_sep, _m4_list_cmp, m4_version_compare): Reduce side
+	effects.
+	* data/m4sugar/foreach.m4 (_m4_shiftn): Fix off-by-one bug.
+	(_m4_list_cmp): Reduce side effects.
+
+2008-08-27  Akim Demaille  <demaille@gostai.com>
+
+	Check yyerrok in calc.at.
+	* tests/calc.at (calc.y): Use yyerrok on "( error )".
+	(AT_CHECK_CALC): Add a check that ensures that yyerrok works as
+	expected.
+
+2008-08-27  Akim Demaille  <demaille@gostai.com>
+
+	Support yyerrok in lalr1.cc.
+	YYBACKUP is still to import back into lalr1.cc.
+	* data/lalr1.cc (yyerrork, yyclearin, YYRECOVERING): Define.
+
+2008-08-26  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	For maintainer-check*, don't recompile for a $(VERSION) update.
+	* cfg.mk: New file.
+	(_is-dist-target): Override the one in GNUmakefile.
+	* Makefile.am (EXTRA_DIST): Add cfg.mk.
+
+2008-08-26  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Update for recent change to gnulib.
+	* src/parse-gram.y: Don't include strverscmp.h.  It comes from
+	string.h now.
+
+2008-08-15  Eric Blake  <ebb9@byu.net>
+
+	Remaining m4sugar merge from autoconf.
+	* data/m4sugar/m4sugar.m4: Copy entire file from autoconf.
+	* data/m4sugar/foreach.m4: New file, copied from autoconf.
+	* data/Makefile.am (dist_m4sugar_DATA): Distribute it.
+	* src/output.c (output_skeleton): Tell m4 how to find it.
+
+	Partial m4sugar merge from autoconf: m4_map.
+	* data/m4sugar/m4sugar.m4 (m4_fst): Delete.
+	(m4_map, m4_map_sep, _m4_map): Rewrite more efficiently.
+	(m4_apply, _m4_apply, m4_mapall, m4_mapall_sep): New macros.
+	* data/java.m4 (b4_token_enums): Use more efficient short-circuit
+	for empty list.
+	* data/c.m4 (b4_token_defines, b4_token_enums, b4_c_ansi_formals):
+	Likewise.
+	(b4_parse_param_for): Avoid m4_fst, now that autoconf no longer
+	declares it.
+
+2008-08-07  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Keep .version and PACKAGE_VERSION in sync.
+	* Makefile.am ($(top_srcdir)/.version): Declare configure as a
+	dependency, and add comments justifying this in more detail.  Discussed
+	starting at
+	<http://lists.gnu.org/archive/html/bison-patches/2008-07/msg00022.html>.
+
+2008-08-06  Eric Blake  <ebb9@byu.net>
+
+	Partial m4sugar merge from autoconf: m4_shiftn.
+	* data/m4sugar/m4sugar.m4 (m4_shiftn): Faster implementation.
+	(m4_shift2, m4_shift3): New macros.
+	(m4_case, m4_bmatch, m4_bpatsubsts, m4_join): Adjust clients.
+	* data/c.m4 (b4_c_function_def, b4_c_ansi_function_def)
+	(b4_c_ansi_function_decl, b4_c_function_call): Likewise.
+	* data/java.m4 (b4_remove_comma): Likewise.
+
+	Partial m4sugar merge from autoconf: m4_wrap vs. m4 1.6.
+	* data/m4sugar/m4sugar.m4 (m4_unquote, m4_wrap_lifo): New macros.
+	(m4_wrap): Guarantee FIFO order, in spite of m4 1.6.
+	(m4_init): Consolidate wrapped text into single m4_wrap.
+	* data/bison.m4 (b4_check_user_names_wrap): Stick with LIFO order
+	in wrapped text.
+
+2008-08-05  Eric Blake  <ebb9@byu.net>
+
+	Partial m4sugar merge from autoconf: builtins, version.m4.
+	* data/m4sugar/m4sugar.m4 (changeword): Nuke.
+	(m4_prepend): Remove, as it is unused and inherently quadratic,
+	whereas m4_append is linear in newer m4.
+	(m4_mkstemp): New builtin.
+	(m4_symbols): Make rename conditional.
+	(m4_version_prereq): Ensure fatal error if used in bison, which
+	intentionally lacks version.m4.
+
+	Fix comments in m4sugar.
+	* data/m4sugar/m4sugar.m4: Comment changes, borrowed from autoconf.
+
+2008-08-02  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Update for recent .gitignore fix in Gnulib.
+	* bootstrap: Back out 2008-07-18 hack now that gnulib-tool creates
+	anchored .gitignore entries.
+
+2008-08-02  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Set gnu or gnits strictness.
+	* configure.ac (AM_INIT_AUTOMAKE): Set gnu strictness during
+	development and gnits strictness for releases.  Based on Eric Blake's
+	suggestion at
+	<http://lists.gnu.org/archive/html/bug-bison/2008-07/msg00019.html>.
+
+2008-07-31  Paolo Bonzini  <bonzini@gnu.org>
+
+	* NEWS: Clarify documentation of %language.
+
+2008-07-31  Paolo Bonzini  <bonzini@gnu.org>
+
+	Support usage of git-merge-changelog.
+	* .gitattributes: New.
+	* HACKING: Document usage of git-merge-changelog.
+	* bootstrap: Install git-merge-changelog entries in .git/config
+	if appropriate.
+
+2008-07-27  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Remove remaining dependence on CVS Id keyword.
+	* ChangeLog: For the sake of people still using CVS, don't use dollars
+	when mentioning Id.
+	* data/xslt/bison.xsl: Remove Id from header comments, where it was
+	unusual anyway.
+	* data/xslt/xml2dot.xsl: Likewise.
+	* data/xslt/xml2text.xsl: Likewise.
+	* data/xslt/xml2xhtml.xsl: Likewise.
+	* doc/Doxyfile.in (PROJECT_NUMBER): Don't use ID.
+	* doc/Makefile.am (neutralize): Remove, no longer needed.
+	(.x.1): Don't use neutralize.
+	(edit): Don't substitute for ID.
+	(Doxyfile): Don't define Id, and thus don't depend on ChangeLog.
+
+2008-07-27  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Fix dependence on computed configure variables.
+	* doc/Makefile.am (common_dep): Depend on $(top_srcdir)/configure not
+	$(top_srcdir)/configure.ac so that changes to computed variables, such
+	as PACKAGE_VERSION, are seen.
+	* tests/Makefile.am ($(srcdir)/package.m4): Likewise.
+
+2008-07-20  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Update copyright dates for recent changes.
+	* Makefile.am: Here.
+	* src/Makefile.am: Here.
+	* src/reduce.c: Here.
+	* tests/reduce.at: Here.
+
+2008-07-18  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Use git-version-gen for version names between releases.
+	* .cvsignore (.tarball-version, GNUmakefile, *~): Add.
+	* .gitignore (/.tarball-version, /GNUmakefile, /*~): Add.
+	* .prev-version: New.
+	* .version.in: Remove.
+	* ChangeLog: Remove the Id previously used for capturing the CVS
+	revision.
+	* GNUmakefile: Remove, now copied from Gnulib.
+	* Makefile.am: Add code suggested by comments in
+	build-aux/git-version-gen.
+	(EXTRA_DIST): Remove GNUmakefile, handled by Gnulib.  Add maint.mk,
+	.prev-version, and .version.
+	* NEWS (2.3b+): Rename to...
+	(?.?): ... this because we're dropping the "+" version naming scheme,
+	but, in general, we still can't be sure of our next release name.
+	* bootstrap: Add a quick hack to remove from .gitignore the
+	GNUmakefile entry that gnulib adds.  We already have a /GNUmakefile
+	entry.  This should really be fixed in gnulib instead.
+	* bootstrap.conf (gnulib_modules): Add gnumakefile.
+	* configure.ac (AC_INIT): Set version name by invoking
+	build-aux/git-version-gen.
+	(AC_CONFIG_FILES): Remove .version, now generated by
+	build-aux/git-version-gen.
+	* maint.mk: New, copied from coreutils.
+	* doc/.cvsignore (bison.1): Add.
+	* doc/.gitignore (/bison.1): Add.
+	* doc/bison.1: Remove, generated.
+	* src/.cvsignore (revision.c): Remove.
+	* src/.gitignore (/revision.c): Remove.
+	* src/Makefile.am (bison_SOURCES): Remove revision.c and revision.h.
+	(BUILT_SOURCES): Remove revision.c.
+	(revision.c): Remove.
+	* src/getargs.c (version): Don't print revision after the VERSION.
+	* src/revision.h: Remove.
+
+2008-07-16  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Fix untranslatable composition of sentences.  Reported by Goran
+	Uddeborg at
+	<http://lists.gnu.org/archive/html/bug-bison/2008-06/msg00000.html>.
+	* THANKS (Goran Uddeborg): Add.
+	* src/reduce.c (reduce_print): Report the number of nonterminals and
+	rules useless in the grammar in separate sentences.
+	* tests/reduce.at (Useless Rules): Update output.
+	(Reduced Automaton): Likewise.
+	(Underivable Rules): Likewise.
+	(Empty Language): Likewise.
+
+2008-07-15  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Fix some .gitignore and .cvsignore problems.
+	* bootstrap (insert_sorted_if_absent): Replace all uses with...
+	(insert_vc_ignore): ... this new function, which prepends `/' to all
+	.gitignore entries before passing them to insert_sorted_if_absent.
+	* bootstrap.conf (vc_ignore): Set to '.cvsignore .gitignore' so that
+	.cvsignore files are maintained even though Bison developers run
+	bootstrap while using Git.
+	* .cvsignore (*.patch *.log log patches applied): Remove, apparently
+	unneeded by Bison.
+	(gnulib): Add.
+	* .gitignore (/*.patch *.log log patches applied): Remove, broken and
+	unneeded.  Reported by Eric Blake.
+	* lib/.gitignore (/*~): Add.
+	* po/.cvsignore, runtime-po/.cvsignore: Sync with .gitignore.
+	* examples/calc++/.gitignore (/calc++.exe): Add.  Reported by Eric
+	Blake.
+	* src/.gitignore (/bison.exe): Add.  Reported by Eric Blake.
+
+2008-07-15  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Improve forward-compatibility with GNU M4.  Reported by Eric Blake at
+	<http://lists.gnu.org/archive/html/bug-bison/2008-07/msg00000.html>.
+	* bootstrap.conf (gnulib_modules): Add unsetenv.
+	* lib/.gitignore, lib/.cvsignore (/unsetenv.c): Add.
+	* m4/.gitignore, m4/.cvsignore (/environ.m4): Add.
+	(/setenv.m4): Add.
+	* src/output.c (output_skeleton): For the m4 invocation, pass -dV as
+	the first argument because it may become position-dependent, and unset
+	POSIXLY_CORRECT so Bison's skeletons have access to GNU M4 extensions.
+	Add comments explaining these issues in more detail.
+
+2008-07-14  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Add .gitignore everywhere based on .cvsignore.
+	* .gitignore: New.
+	* build-aux/.gitignore: New.
+	* data/.gitignore: New.
+	* doc/.gitignore: New.
+	* etc/.gitignore: New.
+	* examples/.gitignore: New.
+	* examples/calc++/.gitignore: New.
+	* lib/.gitignore: New.
+	* m4/.gitignore: New.
+	* po/.gitignore: New.
+	* runtime-po/.gitignore: New.
+	* src/.gitignore: New.
+	* tests/.gitignore: New.
+
+2008-05-27  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* NEWS (2.3b+): New section, empty for now.
+	* configure.ac (AC_INIT): 2.3b -> 2.3b+.
+
+2008-05-27  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* NEWS (2.3b): Update release date since there has been a delay in
+	getting the announcements and tarballs out.
+
+2008-05-23  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* NEWS: Version 2.3b.
+	* configure.ac (AC_INIT): Likewise.
+	(PACKAGE_COPYRIGHT_YEAR): Update to 2008.
+
+2008-05-23  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* HACKING: Don't say don't mention HACKING in the ChangeLog.  We've
+	been doing it for years.
+	(Test suite): Mention maintainer-push-check and maintainer-xml-check.
+	(Release Procedure): Add FIXME about make alpha being unmaintained.
+
+2008-05-13  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* data/yacc.c: Reformat m4 a little for readability.
+	* src/lalr.c (build_relations): Correct comment.
+
+2008-05-12  Juan Manuel Guerrero  <juan.guerrero@gmx.de>
+
+	DJGPP specific issue.
+	* djgpp/config.sed: Fixes required to run configure scripts generated
+	by autoconf 2.62.
+
+2008-05-07  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* HACKING (Release Procedure): translation@iro.umontreal.ca is now
+	coordinator@translationproject.org.
+
+2008-05-06  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* THANKS: Add Eric Blake.
+
+2008-04-23  Eric Blake  <ebb9@byu.net>
+
+	Revert prior patch, by working around autoconf regression.
+	* tests/output.at (m4_expand): Add workaround for autoconf 2.62.
+	("Output file name: ("): Uncomment test.
+	("Output file name: )"): Likewise.
+	Based on an idea from Noah Misch.
+
+2008-04-21  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Work-around an Autoconf 2.62 AT_SETUP bug that was not present in
+	2.61.  Reported by Juan Manuel Guerrero at
+	<http://lists.gnu.org/archive/html/bug-bison/2008-04/msg00011.html>.
+	* tests/output.at ("Output file name: ("): Comment out test case for
+	now.
+	("Output file name: )"): Likewise.
+
+2008-04-21  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* GNUmakefile: Update git-version-gen invocation so make dist
+	succeeds.
+
+2008-04-21  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Update to the current gnulib CVS repository, and fix trigraph handling
+	in Bison.
+	* bootstrap: Update gnulib CVS repository URL.
+	(symlink_to_dir): Encapsulate the code that guarantees the destination
+	directory exists into...
+	(check_dst_dir): ... this new function, and...
+	(cp_mark_as_generated): ... reuse it here so that bootstrap doesn't
+	fail when copying files into lib/uniwidth/.
+	* src/output.c (prepare_symbols): When writing yytname muscles, where
+	symbol names will be encoded in C-string literals, tell quotearg to
+	escape trigraphs.  This used to be the default in gnulib.
+	* tests/regression.at (Token definitions): Because of the change in
+	gnulib's quotearg behavior, string_as_id in parse-gram.y no longer
+	escapes trigraphs in symbol names.  Thus, yytname no longer has
+	trigraphs unnecessarily doubly escaped.  Update test case output.
+	Extend test case to be sure Bison's own error messages will no longer
+	have trigraphs in symbol names unnecessarily escaped once.
+
+2008-04-20  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Fix make dist infinite loop reported by Juan Manuel Guerrero at
+	<http://lists.gnu.org/archive/html/bug-bison/2008-01/msg00009.html>.
+	* .cvsignore: Add .version.
+	* .version.in: New.
+	* bootstrap.conf (gnulib_modules): Add git-version-gen.
+	* configure.ac (AC_CONFIG_FILES): Add .version.
+	* build-aux/.cvsignore: Add git-version-gen.
+
+2008-03-08  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* NEWS (2.3a+): Mention that -g now takes an argument.
+	* doc/bison.texinfo (Bison Options): Reword -W entry a little for
+	consistency.  Update the -g and -x entries now that they take
+	arguments.  Use brackets to indicate optional arguments.
+	* src/getargs.c (usage): Explain the relationship between arguments of
+	long and short options more completely.  Document --defines and -d
+	separately since the former takes an argument but, for POSIX Yacc, the
+	latter does not.
+	(short_options): Let -W take an optional argument like --warnings.
+	(getargs): Sort cases.
+
+2008-02-28  Akim Demaille  <demaille@gostai.com>
+
+	* doc/bison.texinfo: Fix a few typos.
+
+2008-02-28  Akim Demaille  <akim@epita.fr>
+
+	* doc/bison.texinfo (Bison Options): Document -W.
+	Based on Joel E. Denny's NEWS entry, and Automake's documentation.
+
+2008-02-28  Akim Demaille  <akim@epita.fr>
+
+	* src/getargs.c (short_options): Split and sort for readability.
+	-g and -x take optional arguments, just like their long options.
+	* build-aux/cross-options.pl: Use /x to make the regexp easier to
+	understand.
+	Fix the handling of $opt which resulted in all the argument to be
+	considered as optional.
+
+2008-02-22  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* NEWS (2.3a+): Don't say %language is experimental.  Mention Java and
+	say its interface is experimental.
+	* doc/bison.texinfo (Decl Summary): In the %language entry, mention
+	Java.
+	(Bison Options): In the -L and --language entry, mention Java.
+	(Java Bison Interface): Say the interface is experimental.
+	* src/getargs.c (usage): Mention -L and --language.
+
+	* NEWS (2.3a+): Say the push parsing interface is experimental.
+	* doc/bison.texinfo (Push Decl): Likewise.
+	(Decl Summary): Likewise in the "%define api.push_pull" entry.
+	(Push Parser Function): Likewise.
+	(Pull Parser Function): Likewise.
+	(Parser Create Function): Likewise.
+	(Parser Delete Function): Likewise.
+	(Table of Symbols): Likewise in the yypstate_delete, yypstate_new,
+	yypull_parse, and yypush_parse entries.
+
+	* NEWS (2.3a+): Mention XML support, and say the schema is
+	experimental.
+	* doc/bison.texinfo (Bison Options): Mention -x and --xml.
+	* src/getargs.c (usage): Say the XML schema is experimental.
+
+	* NEWS (2.3a+): Say option instead of flag.
+
+2008-02-21  Wojciech Polak  <polak@gnu.org>
+
+	* data/xslt/xml2xhtml.xsl (xsl:template match="/"): Change footer
+	text.
+
+2008-02-20  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Fix impure push parser compile error reported by Bob Rossi at
+	<http://lists.gnu.org/archive/html/help-bison/2008-02/msg00023.html>.
+	* data/yacc.c: Clean up whitespace in the output a little.
+	(yypstate_allocated): Define for impure push parsers regardless of
+	whether the pull interface is also requested.
+	* tests/push.at (Push Parsing: Multiple impure instances): Extend to
+	check impure push parsers without the pull interface.
+
+	* data/yacc.c (yypstate_new): Don't try to invoke yyerror since
+	yyerror takes arguments specified by %parse-param while yypstate_new
+	does not.
+	* doc/bison.texinfo (Parser Create Function): Document that
+	yypstate_new returns 0 for multiple impure parser instances.
+	* tests/push.at (Push Parsing: Multiple impure instances): Update
+	expected stderr output.
+
+2008-02-19  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* runtime-po/POTFILES.in (push.c): Remove.
+
+2008-02-17  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* data/Makefile.am (dist_pkgdata_DATA): Remove push.c.
+	* data/push.c: Rename to...
+	* data/yacc.c: ... this, overwriting it.
+	* etc/bench.pl.in (bench_grammar): `%pure-parser'-> `%define api.pure'.
+	`%push-pull-parser' -> `%define api.push_pull "both"'.
+	Remove old yacc.c tests, and update push.c tests to yacc.c.
+
+2008-02-17  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* data/bison.m4 (b4_percent_code_get): Output %code block comments like
+	`"%code top" blocks' instead of `%code "top" blocks'.
+	* data/push.c: Import yacc.c changes from 2008-01-09 and 2007-08-03.
+	Clean up whitespace in the output a little.
+
+2008-02-16  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Fix documentation problems reported by Tim Josling at
+	<http://lists.gnu.org/archive/html/bug-bison/2008-01/msg00013.html>.
+	* NEWS (2.3a+): Mention removal of --no-parser, -n, and %no-parser.
+	* doc/bison.texinfo (Token Decl): Token numbers are *nonnegative*
+	integers.  Explain the effect of literal string aliases on error
+	messages.  Copy token 0 documentation from the C++ skeleton
+	documentation.
+
+2008-02-16  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Accept a token number in a %left, %right, or %nonassoc for POSIX
+	conformance.  Reported by Tim Josling at
+	<http://lists.gnu.org/archive/html/bug-bison/2008-01/msg00010.html>.
+	* NEWS (2.3a+): Mention.
+	* doc/bison.texinfo (Precedence Decl): Describe how literal strings
+	and code numbers are treated by precedence declarations.
+	* src/parse-gram.y (precedence_declaration): Use symbols.prec instead
+	of symbols.1.
+	(symbols.prec): New, just like symbols.1 but uses symbol.prec instead
+	of symbol.
+	(symbol.prec): New, just like symbol but allows INT.
+	* src/symtab.c (symbol_user_token_number_set): Remove an aver that no
+	longer holds.
+	* tests/regression.at (Token number in precedence declaration): New
+	test case.
+
+2008-02-06  Juan Manuel Guerrero  <juan.guerrero@gmx.de>
+
+	DJGPP specific issues.
+	* djgpp/config.bat: Add filenames that are not 8.3 clean and that must
+	be changed.  Copyright timestamp adjusted.
+	* djgpp/config.sed: Add filenames that are not 8.3 clean and that must
+	be changed.  Copyright timestamp adjusted.
+	* djgpp/config.site: Copyright timestamp adjusted.
+	* djgpp/config_h.sed: Copyright timestamp adjusted.
+	* djgpp/djunpack.bat: Copyright timestamp adjusted.
+	* djgpp/fnchnage.lst: Add filenames that are not 8.3 clean to the
+	filename translation list.
+	* djgpp/subpipe.c (init_subpipe): Check the environment variables
+	TMPDIR, TMP and TEMP, in that order, to determinate where the temp
+	files shall be created.  Before trying to use the temp dir where the
+	environment variable points to check that the dir really exists. If
+	not default to the cwd as temp dir.  Copyright timestamp adjusted.
+	* djgpp/subpipe.h: Copyright timestamp adjusted.
+	* djgpp/testsuite.sed: Copyright timestamp adjusted.
+
+2008-01-30  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* doc/bison.texinfo: Update Back-Cover text to reflect new GNU wording.
+
+2008-01-09  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/yacc.c (yyparse): Correct the comment when locations aren't used.
+	Problem reported by Claudio Saavedra in
+	<http://lists.gnu.org/archive/html/bug-bison/2008-01/msg00003.html>.
+
+2008-01-05  Wojciech Polak  <polak@gnu.org>
+
+	* data/xslt/xml2xhtml.xsl (xsl:template match="/"): Precede an XHTML
+	document's title with the input grammar file name.
+
+2007-12-22  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Automate regression testing of the XML/XSLT implementation.  Discussed
+	starting at
+	<http://lists.gnu.org/archive/html/bison-patches/2007-11/msg00021.html>.
+	* configure.ac (XSLTPROC): New substitution.
+	* Makefile.am (maintainer-xml-check): New phony target invoking...
+	* tests/Makefile.am (maintainer-xml-check): ... this new phony target
+	invoking make maintainer-check with BISON_TEST_XML=1.
+	* tests/atlocal.in (XSLTPROC): New.
+	* tests/local.at (AT_BISON_CHECK): New macro to (1) instruct Valgrind
+	not to report reachable memory when Bison is expected to have a
+	non-zero exit status and (2) to compare XML/XSLT output with --graph
+	and --report=all output for every working grammar when
+	BISON_TEST_XML=1.
+	(AT_BISON_CHECK_NO_XML): Likewise, but skip XML checks.
+	(AT_BISON_CHECK_XML): New.
+	(AT_QUELL_VALGRIND): New.
+	* tests/testsuite.at (ORIGINAL_AT_CHECK): Remove this and...
+	(AT_CHECK): ... don't redefine this since this was the old way to
+	quell Valgrind.
+	* tests/actions.at: Rewrite all AT_CHECK invocations for bison as
+	AT_BISON_CHECK invocations.
+	* tests/c++.at: Likewise.
+	* tests/calc.at: Likewise.
+	* tests/conflicts.at: Likewise.
+	* tests/cxx-type.at: Likewise.
+	* tests/existing.at: Likewise.
+	* tests/glr-regression.at: Likewise.
+	* tests/headers.at: Likewise.
+	* tests/input.at: Likewise.
+	* tests/java.at: Likewise.
+	* tests/output.at: Likewise.
+	* tests/push.at: Likewise.
+	* tests/reduce.at: Likewise.
+	* tests/regression.at: Likewise.
+	* tests/sets.at: Likewise.
+	* tests/skeletons.at: Likewise.
+	* tests/synclines.at: Likewise.
+	* tests/torture.at: Likewise.
+	(Big triangle): Use AT_BISON_CHECK_NO_XML instead since this grammar
+	tends to hang xsltproc.
+	(Big horizontal): Likewise.
+
+2007-12-08  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	In XML output, remove redundant class attribute on symbol element.
+	* data/xslt/bison.xsl (xsl:key name="bison:symbolByName"): New.
+	* data/xslt/xml2xhtml.xsl (xsl:template match="symbol"): Use it to
+	look up a symbol to determine whether it's a nonterminal or terminal.
+	* src/gram.c (rule_rhs_print_xml): Remove class attribute.
+	* src/state.c (state_rule_lookahead_tokens_print_xml): Likewise.
+
+	Add prec/assoc information to XML output.
+	* src/gram.c (grammar_rules_print_xml): For each rule that has a
+	%prec, add a percent_prec attribute.
+	* src/print-xml.c (print_grammar): For each terminal that has a
+	precedence or associativity, add a prec or assoc attribute.
+	(xml_indent): New.
+	(xml_puts): Use xml_indent.
+	(xml_printf): Use xml_indent.
+	* src/print-xml.h (xml_indent): Prototype.
+
+	* tests/existing.at (GNU pic Grammar): Fix a rule miscopied from
+	<http://lists.gnu.org/archive/html/bug-bison/2003-04/msg00026.html>.
+
+2007-12-08  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* data/xslt/bison.xsl (bison:ruleNumber): Rename to...
+	(bison:ruleByNumber): ... this for clarity.
+	* data/xslt/xml2dot.xsl (xsl:template match="item"): Update.
+	* data/xslt/xml2text.xsl (xsl:template match="item"): Update.
+	(xsl:template match="reduction"): Update.
+	(xsl:template match="item"): Update.
+	(xsl:template match="reduction"): Update.
+
+	In the XML output, don't print the list of rules where symbols appear.
+	Compute it in XSLT instead.  Discussed at
+	<http://lists.gnu.org/archive/html/bison-patches/2007-09/msg00024.html>.
+	* data/xslt/bison.xsl (bison:ruleByLhs): New.
+	(bison:ruleByRhs): New.
+	* data/xslt/xml2text.xsl (xsl:template match="terminal"): Use
+	bison:ruleByRhs.
+	(xsl:template match="terminal/rule"): Remove.
+	(xsl:template match="nonterminal"): Use bison:ruleByLhs and
+	bison:ruleByRhs.
+	(xsl:template match="nonterminal/left/rule|nonterminal/right/rule"):
+	Remove.
+	* data/xslt/xml2xhtml.xsl (xsl:template match="terminal"): Use
+	bison:ruleByRhs and mode="number-link" for rule template.
+	(xsl:template match="terminal/rule"): Remove.
+	(xsl:template match="nonterminal"): Use bison:ruleByLhs and
+	bison:ruleByRhs and mode="number-link" for rule template.
+	(xsl:template match="nonterminal/left/rule|nonterminal/right/rule"):
+	Rewrite as...
+	(xsl:template match="rule" mode="number-link"): ... this.
+	* src/print-xml.c (print_grammar): Don't print the list of rules.
+
+2007-12-01  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Don't let --report affect XML output; always print all information.
+	Discussed at
+	<http://lists.gnu.org/archive/html/bison-patches/2007-09/msg00020.html>.
+	* src/conflicts.c (log_resolution): Implement.
+	* src/print-xml.c (print_core): Implement.
+	(print_state): Implement.
+	(print_xml): Implement.
+
+	* NEWS (2.3a+): Fix quotes.
+	* src/parse-gram.y (prologue_declaration): For consistency with -v,
+	don't let %verbose clear the list specified by --report.
+
+2007-11-26  Akim Demaille  <akim@epita.fr>
+
+	* data/Makefile.am (dist_pkgdata_DATA): Ship and install bison.xsl.
+
+2007-11-24  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	In the XML output, list useless and unused symbols and rules with the
+	useful ones and add a "usefulness" attribute.  Discussed starting at
+	<http://lists.gnu.org/archive/html/bison-patches/2007-09/msg00017.html>.
+	* src/gram.c (grammar_rules_partial_print_xml): Remove.
+	(grammar_rules_print_xml): Print all rules instead of just those
+	useful in the grammar, and add a "usefulness" attribute.
+	* src/gram.h (grammar_rules_partial_print_xml): Remove prototype.
+	* src/print-xml.c (print_rules_useless_in_parser): Remove.
+	(print_grammar): Print all nonterminals instead of just useful ones,
+	and add a "usefulness" attribute to nonterminals and terminals.
+	(print_xml): Don't print a separate "reductions" or
+	"rules-useless-in-parser" element.
+	* src/reduce.c (reduce_output): Use reduce_token_unused_in_grammar.
+	(reduce_xml): Remove.
+	(reduce_token_unused_in_grammar): New.
+	(reduce_nonterminal_useless_in_grammar): New.
+	* src/reduce.h (reduce_xml): Remove prototype.
+	(reduce_token_unused_in_grammar): Add prototype.
+	(reduce_nonterminal_useless_in_grammar): Add prototype.
+	* data/xslt/xml2text.xsl: Update for XML changes.
+	* data/xslt/xml2xhtml.xsl: Update for XML changes.
+	* tests/reduce.at (Useless Terminals): Update output.
+	(Useless Rules): Update output.
+	(Reduced Automaton): Update output.
+
+	Say "Terminals unused in grammar" instead of "Unused terminals".
+	* NEWS (2.3a+): Update.
+	* doc/bison.texinfo (Understanding): Update example output.
+	* src/reduce.c (reduce_output): Implement.
+	* data/xslt/xml2text.xsl: Implement.
+	* data/xslt/xml2xhtml.xsl: Implement.
+
+2007-11-18  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Accept --report-file=FILE to override the default `.output' filename.
+	* NEWS (2.3a+): Mention.
+	* doc/bison.texinfo (Bison Options): Add an entry.
+	* src/files.c (compute_output_file_names): Don't override
+	spec_verbose_file if already set.
+	* src/getargs.c (usage): Document --report-file.
+	(REPORT_FILE_OPTION): New anonymous enum member.
+	(long_options): Add entry for it.
+	(getargs): Add case for it setting spec_verbose_file.
+
+	* build-aux/cross-options.pl: Don't record a short option just because
+	there's an arg.
+	* doc/.cvsignore: Add yacc.1.
+
+2007-11-14  Akim Demaille  <akim@epita.fr>
+
+	* doc/yacc.1.in: New.
+	* configure.ac, doc/Makefile.am: Adjust.
+	* configure.ac (PACKAGE_COPYRIGHT_YEAR): New substitution, and new
+	config.h symbol.
+	Use AC_SUBST for assignments too.
+	* src/getargs.c (version): Use PACKAGE_COPYRIGHT_YEAR.
+
+2007-11-10  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* src/gram.c: Remove comments that duplicate comments in gram.h.
+
+	When reporting useless rules and nonterminals, say "useless in grammar"
+	instead of "useless", and say "useless in parser" instead of "never
+	reduced".  Discussed starting at
+	<http://lists.gnu.org/archive/html/bison-patches/2007-10/msg00033.html>.
+	* NEWS (2.3a+): Mention this change.
+	* data/xslt/xml2text.xsl: Update output text and expected input XML
+	element names to match changes below.
+	* data/xslt/xml2xhtml.xsl: Likewise.
+	(xsl:template match="bison-xml-report"): Add missing entry in Table of
+	Contents: "Rules useless in parser due to conflicts".
+	* doc/bison.texinfo (Decl Summary): Reword a little.
+	(Understanding): Update example output for changes below.
+	* src/gram.c: (rule_useful_p): Rename to...
+	(rule_useful_in_grammar_p): ... this.
+	(rule_useless_p): Rename to...
+	(rule_useless_in_grammar_p): ... this.
+	(rule_never_reduced_p): Rename to...
+	(rule_useless_in_parser_p): ... this.
+	(grammar_rules_print): Update for renames.
+	(grammar_rules_print_xml): Update for renames.
+	(grammar_rules_never_reduced_report): Rename to...
+	(grammar_rules_useless_report): ... this since it is used for either
+	kind of useless rule.
+	* src/gram.h: Reword comments and update function names in prototypes.
+	* src/main.c (main): Say "rule useless in parser due to conflicts".
+	* src/print-xml.c (print_rules_never_reduced): Rename to...
+	(print_rules_useless_in_parser): ... this, and rename output XML
+	element "rules-never-reduced" to "rules-useless-in-parser".
+	(print_xml): Update for rename.
+	* src/print.c (print_results): Say "Rules useless in parser due to
+	conflicts".
+	* src/reduce.c (reduce_grammar_tables): Say "rule useless in grammar".
+	(nonterminals_reduce): Say "nonterminal useless in grammar".
+	(reduce_output): Say "Nonterminals useless in grammar".
+	Say "Rules useless in grammar".
+	(reduce_xml): Rename output XML element "useless" to
+	"useless-in-grammar".
+	(reduce_print): Don't report the count of grammatically useless rules
+	as "rules never reduced" just because %yacc is specified.
+	In the correct report of this count, say nonterminal(s) and rule(s)
+	"useless in grammar".
+	* tests/conflicts.at (S/R in initial): Update expected output.
+	(Defaulted Conflicted Reduction): Likewise.
+	(Unreachable States After Conflict Resolution): Likewise.
+	* tests/existing.at (GNU pic Grammar): Likewise.
+	* tests/reduce.at (Useless Nonterminals): Likewise.
+	(Useless Rules): Likewise.
+	(Reduced Automaton): Likewise.
+	(Underivable Rules): Likewise.
+	(Empty Language): Likewise.
+
+2007-11-09  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* data/bison.m4 (b4_cat): Put a newline after the end delimiter of the
+	here document and before the EOF so that BSD's implementation of Bourne
+	shell doesn't parse the delimiter as part of the here document.
+	* doc/.cvsignore: Add cross-options.texi.
+	* src/getargs.c (usage): Add a blank line after the warning categories.
+
+2007-11-08  Paolo Bonzini  <bonzini@gnu.org>
+
+	* data/lalr1.java (Lexer): Remove usage of b4_pure_if.
+
+2007-11-05  Akim Demaille  <akim@epita.fr>
+
+	Remove Id: from bison.1.
+	* doc/Makefile.am (remove_time_stamp): Include the sed invocation.
+	(perl -0777 -pi -e 's/\.PP\nId): New.
+	(.x.1): Use it to ignore the version control revision.
+
+2007-11-05  Akim Demaille  <demaille@gostai.com>
+
+	* build-aux/Makefile.am: Ship cross-options.pl.
+	* doc/Makefile.am: Always refer to cross-options.texi with
+	$(srcdir).
+	(MAINTAINERCLEANFILES): Add it.
+
+2007-11-04  Akim Demaille  <demaille@gostai.com>
+
+	Generate the long/short option cross-table.
+	* build-aux/cross-options.pl: New.
+	* doc/Makefile.am (cross-options.texi): New.
+	* doc/bison.texinfo: Use it.
+
+2007-11-04  Akim Demaille  <demaille@gostai.com>
+
+	Generate bison.1 using help2man.
+	* doc/common.x, doc/bison.x: New.
+	* doc/Makefile.am (bison.1, .x.1): New.
+	The code is taken from autoconf-2.61/man/Makefile.am.
+	* configure.ac: Look for help2man.
+
+2007-11-04  Akim Demaille  <demaille@gostai.com>
+
+	Complete --help.
+	* src/getargs.c (usage): Document -W, make it clear that -d,
+	-g and -x have optional arguments.
+
+2007-11-04  Akim Demaille  <demaille@gostai.com>
+
+	Find sha1sum when named gsha1sum.
+	* bootstrap (find_tool): New.
+	($SHA1SUM): New.
+
+2007-10-28  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Deprecate %pure-parser and add `%define api.pure'.  Discussed starting
+	at
+	<http://lists.gnu.org/archive/html/bison-patches/2007-09/msg00006.html>.
+	* NEWS (2.3a+): Mention.
+	* data/bison.m4 (b4_pure_if): Don't define it here.
+	* data/c.m4 (b4_identification): Depend on individual skeletons to
+	define b4_pure_flag, b4_push_flag, or b4_pull_flag if they use the
+	values of the %define variables api.pure or api.push_pull.  Define
+	YYPURE, YYPUSH, and YYPULL accordingly.
+	* data/glr.c: Define b4_pure_if based on `%define api.pure' unless
+	glr.cc has already defined b4_pure_flag.
+	* data/push.c: Define b4_pure_if based on `%define api.pure'.
+	Remove YYPUSH and YYPULL since they're back in b4_identification again.
+	* data/yacc.c: Define b4_pure_if based on `%define api.pure'.
+	* doc/bison.texinfo (Pure Decl): Update.
+	(Push Decl): Update.
+	(Decl Summary): Add api.pure to %define entry.
+	In %pure-parser entry, say it's deprecated and reference %define.
+	(Pure Calling): Update.
+	(Error Reporting): Update.
+	(C++ Scanner Interface): Update.
+	(How Can I Reset the Parser): Update.
+	(Table of Symbols): In %pure-parser entry, say it's deprecated and
+	reference %define.
+	* src/getargs.c (pure_parser): Remove global variable.
+	* src/getargs.h (pure_parser): Remove extern.
+	* src/output.c (prepare): Don't define pure_flag muscle.
+	* src/parse-gram.y (prologue_declaration): Implement %pure-parser as a
+	wrapper around `%define api.pure'.
+	* tests/calc.at (Simple LALR Calculator): Update.
+	(Simple GLR Calculator): Update.
+	* tests/cxx-type.at (GLR: Resolve ambiguity, pure, no locations):
+	Update.
+	(GLR: Resolve ambiguity, pure, locations): Update.
+	(GLR: Merge conflicting parses, pure, no locations): Update.
+	(GLR: Merge conflicting parses, pure, locations): Update.
+	* tests/glr-regression.at (Uninitialized location when reporting
+	ambiguity): Update
+	* tests/input.at (Unused %define api.pure): New test case.
+	* tests/local.at (_AT_BISON_OPTION_PUSHDEFS): Update definition for
+	AT_PURE_IF and AT_PURE_AND_LOC_IF.
+	* tests/push.at (Push Parsing: Memory Leak for Early Deletion): Update.
+
+2007-10-28  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	%define push_pull -> %define api.push_pull.  Discussed starting at
+	<http://lists.gnu.org/archive/html/bison-patches/2007-09/msg00005.html>.
+	* data/push.c: Expect the new name.
+	* data/yacc.c: Likewise.
+	* doc/bison.texinfo (Push Decl): Update.
+	(Decl Summary): Update %define entry.
+	(Push Parser Function): Update.
+	(Pull Parser Function): Update.
+	(Parser Create Function): Update.
+	(Parser Delete Function): Update.
+	* tests/calc.at (Simple LALR Calculator): Update.
+	* tests/input.at (%define enum variables): Update.
+	* tests/push.at (Push Parsing: Memory Leak for Early Deletion): Update.
+	(Push Parsing: Multiple impure instances): Update.
+	(Push Parsing: Unsupported Skeletons): Update.
+	* tests/torture.at (Exploding the Stack Size with Alloca): Update.
+	(Exploding the Stack Size with Malloc): Update.
+
+	* NEWS (2.3a+): Add an entry for the push parser, and clean up the
+	other entries some.
+
+2007-10-27  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	For the XML output's terminal element, rename @number to @token-number,
+	and add @symbol-number.  In the nonterminal element, rename @number to
+	@symbol-number.  Discussed starting at
+	<http://lists.gnu.org/archive/html/bison-patches/2007-10/msg00040.html>.
+	* data/xslt/xml2text.xsl (xsl:template match="terminal"): Update for
+	renames.
+	(xsl:template match="nonterminal"): Likewise.
+	* data/xslt/xml2xhtml.xsl (xsl:template match="terminal"): Likewise.
+	(xsl:template match="nonterminal"): Likewise.
+	* src/print-xml.c (print_grammar): Implement.
+
+2007-10-21  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* data/xslt/xml2dot.xsl (xsl:template match="automaton/state"): After
+	2007-10-11 change, the child elements here are items not rules.
+	(xsl:template match="item"): New.
+	(xsl:template match="rule"): Update for new reduced itemset.
+	(xsl:template match="point"): Remove.
+	(xsl:template match="empty"): For consistency with --graph, don't
+	output "/* empty */".
+	* data/xslt/xml2text.xsl (xsl:template match="terminal"): When invoking
+	line-wrap, don't pass a negative value as first-line-length since this
+	won't work with the following changes.
+	(xsl:template name="line-wrap"): Simplify slightly.
+	(xsl:template name="ws-search"): Eliminate recursion.
+	* src/print_graph.c (print_core): Don't print a reduction's lookahead
+	set next to an item whose dot is not at the end of the RHS even if it
+	happens to be associated with the same rule.
+
+2007-10-19  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Add %define lr.keep_unreachable_states.
+	* NEWS (2.3a+): Mention it in the entry for unreachable state removal.
+	* doc/bison.texinfo (Decl Summary): Mention it in the %define entry.
+	* src/main.c (main): Implement it.
+	* tests/conflicts.at (Unreachable States After Conflict Resolution):
+	Extend to test it, and fix a typo.
+
+2007-10-19  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* NEWS (2.3a+): Add entry for recent .output file lookahead set fix.
+	* doc/bison.texinfo (Understanding): Remove a bogus lookahead set in
+	the example .output text.
+	* tests/regression.at (Extra lookahead sets in report): Improve wording
+	of comments.
+
+2007-10-17  Wojciech Polak  <polak@gnu.org>
+
+	* src/print-xml.c (print_grammar): Renamed
+	<terminal> and <nonterminal> attributes:
+	"type" to "number" and "symbol" to "name".
+	* data/xslt/xml2text.xsl (xsl:template match="terminal"):
+	Use new attribute names.
+	(xsl:template match="nonterminal"): Likewise.
+	* data/xslt/xml2xhtml.xsl: Likewise.
+
+2007-10-17  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* doc/bison.texinfo (Bison Options): Add entry for --print-datadir.
+	(Option Cross Key): Likewise.
+
+	* src/print-xml.c (print_core): Don't print a reduction's lookahead set
+	next to an item whose dot is not at the end of the RHS even if it
+	happens to be associated with the same rule.
+	* src/print.c (print_core): Likewise.
+	* tests/conflicts.at (Unresolved SR Conflicts): Update output.
+	(Resolved SR Conflicts): Update output.
+	* tests/regression.at (Extra lookahead sets in report): New test case.
+
+2007-10-11  Wojciech Polak  <polak@gnu.org>
+
+	* src/print-xml.c (print_core): Remove item set
+	redundancy.
+	* data/xslt/bison.xsl (bison:ruleNumber): New key.
+	Improve processing time. Suggested by Joel E. Denny.
+	* data/xslt/xml2dot.xsl (xsl:template name="escape"):
+	Write xsl:param "required" attribute as comment.
+	* data/xslt/xml2text.xsl (xsl:template match="item"): New.
+	(xsl:template match="rule"): Support new reduced itemset.
+	(xsl:template match="point"): Remove.
+	* data/xslt/xml2xhtml.xsl: Likewise.
+
+2007-10-09  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* src/getargs.c (version): Update copyright year.
+
+2007-10-09  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Make xml2dot.xsl and --graph produce the same output.
+	* data/xslt/xml2dot.xsl (xsl:template match="rule"): Use a `&#10;'
+	instead of a `\n'.  That is, don't add escapes yet or they'll be doubly
+	escaped later.
+	(xsl:template name="output-node"): Use the new escape template instead
+	of the string-replace template directly.
+	(xsl:template name="output-edge"): Likewise.
+	(xsl:template name="escape"): New, escapes backslashes and newlines in
+	addition to quotation marks.
+	* src/graphviz.c (start_graph, output_node, output_edge): Add
+	whitespace to output for legibility.
+
+	Make xml2text.xsl and --report produce the same output, and remove the
+	XML "conflicts" element since a conflict summary is easily extracted
+	from the automaton.
+	* data/xslt/bison.xsl: New.
+	(xsl:template match="state" mode="bison:count-conflicts): New.
+	* data/xslt/xml2text.xsl: Import bison.xsl.
+	(xsl:template match="bison-xml-report"): Instead of styling the
+	"conflicts" element, style the "automaton" element with mode
+	"conflicts".  Unlike the former, the latter lists S/R and R/R
+	conflicts for a state on the same line.
+	(xsl:template match="conflicts"): Remove.
+	(xsl:template match="conflict"): Remove.
+	(xsl:template match="terminal"): Line-wrap the list of rules in which
+	the terminal is used.
+	(xsl:template match="nonterminal"): Likewise for nonterminals.
+	(xsl:template match="automaton" mode="conflicts"): New.
+	(xsl:template match="state" mode="conflicts"): New.
+	(xsl:template name="line-wrap"): New.
+	(xsl:template name="ws-search"): New.
+	* data/xslt/xml2xhtml.xsl: Import bison.xsl.
+	(xsl:template match="bison-xml-report"): Instead of styling the
+	"conflicts" element, style the "automaton" element with mode
+	"conflicts."
+	(xsl:template match="conflicts"): Remove.
+	(xsl:template match="conflict"): Remove.
+	(xsl:template match="automaton" mode="conflicts"): New.
+	(xsl:template match="state" mode="conflicts): New.
+	* src/conflicts.c (conflicts_output_xml): Remove.
+	* src/conflicts.h (conflicts_output_xml): Remove prototype.
+	* src/print-xml.c (print_xml): Don't invoke conflicts_output_xml.
+	* src/print.c (print_grammar): Consistently wrap at the 66th column so
+	the corresponding XSLT is easier.  Also, never wrap between a word and
+	the comma that follows it.
+
+2007-10-08  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Improve C++ namespace support.  Discussed starting at
+	<http://lists.gnu.org/archive/html/help-bison/2007-09/msg00016.html>.
+	* data/c++.m4: (b4_namespace_ref, b4_namespace_open,
+	b4_namespace_close): New macros that interpret the %define variable
+	"namespace" so its value can contain "::" to indicate nested
+	namespaces.
+	* data/glr.cc (b4_namespace): Don't define, and replace all uses with
+	the above macros.
+	* data/lalr1.cc (b4_namespace): Likewise.
+	* data/location.cc (b4_namespace): Likewise.
+	* doc/bison.texinfo (Decl Summary): Move `%define push_pull' entry
+	inside a new table in the general %define entry.  Document `%define
+	namespace' there as well.  Point the %name-prefix entry to it since it
+	explains it more completely in the case of C++.
+	(C++ Bison Interface): Mention `%define namespace' instead of
+	%name-prefix.
+	(Table of Symbols): Remove the `%define push_pull' entry.  The %define
+	entry suffices.
+	* tests/c++.at (Relative namespace references): New test case.
+	(Absolute namespace references): New test case.
+	(Syntactically invalid namespace references): New test case.
+	* tests/input.at (C++ namespace reference errors): New test case.
+
+2007-10-08  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Add syncline support and location accessor to internal %define
+	interfaces.
+	* data/bison.m4 (b4_percent_define_get_loc): New.
+	(b4_percent_define_get_syncline): New.
+	(b4_percent_define_flag_if): Use b4_percent_define_get_loc.
+	(b4_percent_define_default): Record defining location as line 1 rather
+	than 0 for the sake of synchronizing #line's, and define
+	b4_percent_define_syncline(VARIABLE).
+	(b4_percent_define_check_values): Use b4_percent_define_get_loc.
+	* src/muscle_tab.c (muscle_syncline_grow): New.
+	(muscle_code_grow): Use muscle_syncline_grow.
+	(muscle_percent_define_insert): Use muscle_percent_define_get_loc, and
+	define b4_percent_define_syncline(VARIABLE).
+	(muscle_percent_define_get_loc): New.
+	(muscle_percent_define_get_syncline): New.
+	(muscle_percent_define_flag_if): Use muscle_percent_define_get_loc, and
+	remove some unused variables.
+	(muscle_percent_define_default): Record defining location as line 1
+	rather than 0 for the sake of synchronizing #line's, and define
+	b4_percent_define_syncline(VARIABLE).
+	(muscle_percent_define_check_values): Use
+	muscle_percent_define_get_loc.
+	* src/muscle_tab.h (muscle_percent_define_get_loc): Prototype.
+	(muscle_percent_define_get_syncline): Prototype.
+	* tests/skeletons.at (%define Boolean variables: invalid skeleton
+	defaults): Update output for location change.
+	(Complaining during macro argument expansion): Extend to test
+	b4_percent_define_get_loc and b4_percent_define_get_syncline errors.
+
+2007-10-07  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Fix some error-reporting macro bugs.
+	* data/bison.m4 (b4_cat): New.
+	(b4_error, b4_error_at): Use b4_cat to send error directives directly
+	to stdout so they don't become arguments to other macros.  Update
+	comments and add examples.
+	(b4_warn, b4_warn_at, b4_complain, b4_complain_at): Update comments and
+	add examples.
+	(b4_fatal, b4_fatal_at): Likewise, and invoke m4_exit(1) immediately
+	after printing the error directive so that M4 doesn't report subsequent
+	problems that are induced by this problem.
+	* src/scan-skel.l: Recognize @` digraph outside of directive arguments
+	instead of just in them.  Recognize @\n in both places.  Both expand to
+	the empty string.  Needed by b4_cat.
+	* tests/skeletons.at (Complaining during macro argument expansion):
+	New test case.
+	(Fatal errors make M4 exit immediately): New test case.
+
+2007-10-04  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Implement --print-datadir.
+	* src/getargs.c (usage): Mention.
+	(PRINT_DATADIR_OPTION): New anonymous enum member.
+	(long_options): Add entry for it.
+	(getargs): Add case for it calling compute_pkgdatadir.
+	* src/output.c (output_skeleton): Encapsulate data directory
+	computation from here...
+	(prepare): ... and from here...
+	(compute_pkgdatadir): ... into this new function.
+	* src/output.h (compute_pkgdatadir): Prototype.
+
+2007-09-29  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* src/print-xml.c (escape_bufs): New static global variable
+	replacing...
+	(xml_escape_n): ... the static local variable buf here.
+	(print_xml): Free memory for escape_bufs.
+	* src/reduce.c (reduce_xml): XML-escape terminal symbol tags.
+
+2007-09-25  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Replace `%push-parser' and `%push-pull-parser' with
+	`%define push_pull "push"' and `%define push_pull "both"'.
+	`%define push_pull "pull"' is the default.
+	* doc/bison.texinfo (Push Decl, Push Parser Function,
+	Pull Parser Function, Parser Create Function, Parser Delete Function):
+	Update declarations.
+	(Decl Summary, Table of Symbols): Replace %push-parser and
+	%push-pull-parser entries with a %define push_pull entry.
+	* data/bison.m4 (b4_percent_define_check_values): New macro.
+	(b4_pull_if, b4_push_if, b4_use_push_for_pull_if): Move these
+	definitions...
+	* data/c.m4 (b4_identification): ... and the YYPUSH and YYPULL cpp
+	definitions...
+	* data/push.c: ... to here and compute them from the value of the
+	%define variable push_pull.
+	* data/c-skel.m4: Instead of choosing the push.c skeleton for push
+	parsing requests here...
+	* data/yacc.c: ... hack this to switch to push.c any time
+	b4_use_push_pull_flag or the %define variable push_pull is set.  This
+	will go away when we mv push.c yacc.c.
+	* data/c++-skel.m4, data/glr.c, data/java-skel.m4: Don't report that
+	push parsing is not supported since unused %define variables are
+	reported anyway.
+	* src/getargs.c, src/getargs.h (pull_parser, push_parser): Remove.
+	* src/muscle_tab.h (muscle_percent_define_check_values): Update
+	comments for consistency with b4_percent_define_check_values.
+	* src/output.c (prepare): Don't insert b4_pull_flag and b4_push_flag
+	muscles.
+	* src/parse-gram.y (PERCENT_PUSH_PARSER, PERCENT_PUSH_PULL_PARSER):
+	Remove.
+	(prologue_declaration): Remove %push-parser and %push-pull-parser
+	rules.
+	* src/scan-gram.l (%push-parser, %push-pull-parser): Remove rules.
+	* tests/calc.at: Update declarations.
+	* tests/input.at (%define enum variables): New test case.
+	* tests/push.at (Push Parsing: Memory Leak for Early Deletion): Update
+	declaration.
+	(Push Parsing: Multiple impure instances): Update declaration.
+	(Push Parsing: Unsupported Skeletons): New test case.
+	* tests/torture.at (Exploding the Stack Size with Alloca): Update
+	declaration.
+	(Exploding the Stack Size with Malloc): Update declaration.
+
+2007-09-24  Wojciech Polak  <polak@gnu.org>
+
+	Add XSLT transformations.
+
+	* data/xslt/xml2dot.xsl: Transform XML into DOT.
+	* data/xslt/xml2text.xsl: Transform XML into plain text.
+	* data/xslt/xml2xhtml.xsl: Transform XML into XHTML.
+	* data/Makefile.am (xsltdir): New variable.
+	(dist_xslt_DATA): Add xslt/*.xsl files.
+
+2007-09-23  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* src/conflicts.c (log_resolution): Fix indenting bugs I introduced.
+	Problem reported by Wojciech Polak.
+	* src/print-xml.c (xml_puts): Work even if LEVEL exceeds INT_MAX/2.
+	(xml_printf): Undo change I made on 21 September; that is,
+	indent 2 spaces, not 1.
+
+2007-09-23  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Pacify ./configure --enable-gcc-warnings.
+	* src/print-xml.c, src/print-xml.h (xml_puts): Make third argument
+	`char const *' instead of `char *'.
+	* src/state.c (state_rule_lookahead_tokens_print_xml): Remove unused
+	local variable `sep'.
+
+2007-09-21  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* src/gram.c (rule_rhs_print_xml): Now static, since it isn't used
+	elsewhere.
+	* src/print-xml.c: Prefer "const" after types; that's more consistent.
+	(xml_printf): Indent just 1 space for level.
+	(e_char, xlate_char): Remove.
+	(xml_escape_string): Rewrite to avoid undefined behavior (used
+	storage that was freed from the stack).
+	(xml_escape_n): Don't bother checking for subscript error.
+
+2007-09-21  Wojciech Polak  <polak@gnu.org>
+
+	Add Bison XML Automaton Report.
+
+	Add support for an -x option to generate an XML report.
+	It is not documented yet.
+	* src/print-xml.c: New file.
+	* src/print-xml.h: Likewise.
+	* lib/timevar.def (TV_XML): New var.
+	* src/Makefile.am (bison_SOURCES): Add print-xml.c, print-xml.h.
+	* src/conflicts.c: Include print-xml.h.
+	(solved_conflicts_xml_obstack): New var.
+	(log_resolution, conflicts_solve, conflicts_free):
+	Add support for XML report.
+	(conflicts_output_val): New function.
+	* src/conflicts.h (conflicts_output_val): New decl.
+	* src/files.c (spec_xml_file): New var.
+	(compute_output_file_names, output_file_names_free): Add XML support.
+	* src/files.h (spec_xml_file): New decl.
+	* src/getargs.c (xml_flag): New var.
+	(usage, short_options, long_options, getargs): Add XML support.
+	* src/getargs.h (xml_flag): New decl.
+	* src/gram.c: Include print-xml.h.
+	(rule_lhs_print_xml, rule_rhs_print_xml):
+	(grammar_rules_partial_print_xml, grammar_rules_print_xml):
+	New functions.
+	* src/gram.h: Declare external ones.
+	* src/main.c: Include print-xml.h.
+	(main): Add XML support.
+	* src/reduce.c: Include print-xml.h.
+	(reduce_xml): New function.
+	* src/reduce.h: Declare it.
+	* src/state.c: Include print-xml.h.
+	(state_new): Add XML support.
+	(state_rule_lookahead_tokens_print_xml): New function.
+	* src/state.h: Declare it.
+	(struct state): New member solved_conflicts_xml.
+	* src/symtab.c (symbol_class_get_string): New function.
+	* src/symtab.h: Declare it.
+
+2007-09-21  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* GNUmakefile: Switch to coreutils's version.
+	* bootstrap: Likewise.
+	* Makefile.cfg: Adjust to new GNUmakefile.
+	* README-hacking: Likewise.
+
+	Import from gnulib:
+
+	2006-08-18  Paul Eggert  <eggert@cs.ucla.edu>
+		    Bruno Haible  <bruno@clisp.org>
+
+	* m4/bison-i18n.m4 (BISON_I18N): Also handle the case where yacc exists
+	and is a script that invokes bison. Tighten the code. Add comments.
+
+2007-08-28  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Spell "boolean" as "Boolean".  Reported by Akim Demaille.
+	* data/bison.m4 (b4_percent_define_flag_if): Fix complaint.
+	* doc/bison.texinfo (Decl Summary): Fix.
+	* src/muscle_tab.c (muscle_percent_define_flag_if): Fix complaint.
+	* tests/input.at (Boolean %define variables): Update output.
+	* tests/skeletons.at (%define boolean variables: invalid skeleton
+	defaults): Rename to...
+	(%define Boolean variables: invalid skeleton defaults): ... this and
+	update output.
+
+2007-08-17  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	In impure push mode, don't allow more than one yypstate to be allocated
+	since multiple impure parsers would corrupt yynerrs.
+	* data/push.c (yypstate_allocated): New static global variable
+	initialized to 0.
+	(yypull_parse): If yypstate_new returns 0, don't report it as memory
+	exhaustion if yypstate_allocated is 1, but still return 2.
+	(yypstate_new): Invoke yyerror and return 0 if yypstate_allocated is
+	already 1.  Otherwise, set it to 1.
+	(yypstate_delete): Set it to 0.
+	* tests/push.at (Push Parsing: Multiple impure instances): New test
+	case.
+
+2007-08-17  Bob Rossi  <bob@brasko.net>
+
+	* doc/bison.texinfo (Push Decl): Document the push parser.
+	(Table of Symbols): Ditto.
+	(Pure Decl): Ditto.
+	(Decl Summary): Ditto.
+	(Multiple Parsers, Push Parser Function, Pull Parser Function,
+	Parser Create Function, Parser Delete Function):
+	Add new push parser symbols.
+	(Table of Symbols): Document push-parser, push-pull-parser,
+	yypush_parse, yypull_parse, yypstate_new and yypstate_delete.
+
+2007-08-15  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Update to GPLv3.
+	* doc/gpl-3.0.texi: New file.
+	* doc/gpl.texi: Remove.
+	* COPYING, GNUmakefile, HACKING, Makefile.am, Makefile.cfg:
+	* Makefile.maint, NEWS, PACKAGING, README, README-alpha:
+	* README-hacking, TODO, bootstrap, bootstrap.conf:
+	* configure.ac, data/Makefile.am, data/README, data/bison.m4:
+	* data/c++-skel.m4, data/c++.m4, data/c-skel.m4, data/c.m4:
+	* data/glr.c, data/glr.cc, data/java-skel.m4, data/java.m4:
+	* data/lalr1.cc, data/lalr1.java, data/location.cc:
+	* data/push.c, data/yacc.c, data/m4sugar/m4sugar.m4:
+	* djgpp/Makefile.maint, djgpp/README.in, djgpp/config.bat:
+	* djgpp/config.sed, djgpp/config.site, djgpp/config_h.sed:
+	* djgpp/djunpack.bat, djgpp/subpipe.c, djgpp/subpipe.h:
+	* djgpp/testsuite.sed, doc/Makefile.am, doc/bison.texinfo:
+	* doc/fdl.texi, doc/refcard.tex, etc/Makefile.am, etc/README:
+	* etc/bench.pl.in, examples/Makefile.am, examples/extexi:
+	* examples/calc++/Makefile.am, lib/Makefile.am, lib/abitset.c:
+	* lib/abitset.h, lib/bbitset.h, lib/bitset.c, lib/bitset.h:
+	* lib/bitset_stats.c, lib/bitset_stats.h, lib/bitsetv-print.c:
+	* lib/bitsetv-print.h, lib/bitsetv.c, lib/bitsetv.h:
+	* lib/ebitset.c, lib/ebitset.h, lib/get-errno.c:
+	* lib/get-errno.h, lib/lbitset.c, lib/lbitset.h:
+	* lib/libiberty.h, lib/main.c, lib/subpipe.c, lib/subpipe.h:
+	* lib/timevar.c, lib/timevar.def, lib/timevar.h:
+	* lib/vbitset.c, lib/vbitset.h, lib/yyerror.c:
+	* m4/c-working.m4, m4/cxx.m4, m4/m4.m4, m4/subpipe.m4:
+	* m4/timevar.m4, src/LR0.c, src/LR0.h, src/Makefile.am:
+	* src/assoc.c, src/assoc.h, src/closure.c, src/closure.h:
+	* src/complain.c, src/complain.h, src/conflicts.c:
+	* src/conflicts.h, src/derives.c, src/derives.h, src/files.c:
+	* src/files.h, src/flex-scanner.h, src/getargs.c:
+	* src/getargs.h, src/gram.c, src/gram.h, src/graphviz.c:
+	* src/lalr.c, src/lalr.h, src/location.c, src/location.h:
+	* src/main.c, src/muscle_tab.c, src/muscle_tab.h:
+	* src/nullable.c, src/nullable.h, src/output.c, src/output.h:
+	* src/parse-gram.c, src/parse-gram.h, src/parse-gram.y:
+	* src/print.c, src/print.h, src/print_graph.c:
+	* src/print_graph.h, src/reader.c, src/reader.h, src/reduce.c:
+	* src/reduce.h, src/relation.c, src/relation.h:
+	* src/revision.h, src/scan-code.h, src/scan-code.l:
+	* src/scan-gram.h, src/scan-gram.l, src/scan-skel.h:
+	* src/scan-skel.l, src/state.c, src/state.h, src/symlist.c:
+	* src/symlist.h, src/symtab.c, src/symtab.h, src/system.h:
+	* src/tables.c, src/tables.h, src/uniqstr.c, src/uniqstr.h:
+	* tests/Makefile.am, tests/actions.at, tests/c++.at:
+	* tests/calc.at, tests/conflicts.at, tests/cxx-type.at:
+	* tests/existing.at, tests/glr-regression.at:
+	* tests/headers.at, tests/input.at, tests/java.at:
+	* tests/local.at, tests/output.at, tests/push.at:
+	* tests/reduce.at, tests/regression.at, tests/sets.at:
+	* tests/skeletons.at, tests/synclines.at, tests/testsuite.at:
+	* tests/torture.at:
+	Update to GPLv3.
+
+2007-08-11  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Get rid of broken %no-parser, -n, and --no-parser implementation and
+	documentation.
+	* TODO: Don't mention them.
+	* doc/bison.1: Likewise.
+	* doc/bison.texinfo (Decl Summary): Likewise.
+	(Bison Options): Likewise.
+	(Option Cross Key): Likewise.
+	* src/getargs.c (no_parser_flag): Remove global variable.
+	(usage): Don't print description of -n and --no-parser.
+	(long_options): Remove --no-parser entry here.
+	(getargs): Remove -n case in the switch here.
+	* src/getargs.h (no_parser_flag): Remove extern.
+	* tests/regression.at (Web2c Actions): Remove comment that mentions
+	--no-parser.
+
+2007-08-11  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* tests/push.at (Push Parsing: Memory Leak for Early Deletion): Do not
+	name user variables starting with `yy'.  Just pass NULL instead of a
+	dummy local &yylval to yypush_parse.
+	* tests/torture.at (AT_DATA_STACK_TORTURE): Do not name user variables
+	starting with `yy'.
+
+2007-08-03  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* data/yacc.c (yyexhaustedlab): Define it when YYERROR_VERBOSE is
+	true since it's then always used regardless of whether yyoverflow is
+	defined.  Reported by Christian Burger at
+	<http://lists.gnu.org/archive/html/bug-bison/2007-07/msg00031.html>.
+	* THANKS: Add Christian Burger.
+
+	* ChangeLog: For changes in doc/bison.texinfo, consistently reference
+	node names: say "Decl Summary" not "Bison Declaration Summary".
+
+2007-07-28  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* src/muscle_tab.c (muscle_percent_define_flag_if): In order to
+	determine whether this function has already complained about an invalid
+	value for a %define boolean variable, don't check whether Bison has
+	ever examined the value.  As written, the check was a tautology.
+	Instead, record and check for this complaint using a separate muscle.
+
+2007-07-27  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Fix push parsing memory leak reported by Brandon Lucia at
+	<http://lists.gnu.org/archive/html/bug-bison/2007-07/msg00032.html>.
+	* THANKS: Add Brandon Lucia.
+	* data/push.c (yypstate_delete): Free the stack if it was reallocated
+	but the parse never completed and thus freed it.
+	* tests/Makefile.am (TESTSUITE_AT): Add push.at.
+	* tests/testsuite.at: Include push.at.
+	* test/push.at: New.
+	(Push Parsing: Memory Leak for Early Deletion): New test case.
+
+2007-07-17  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Improve handling of multiple S/R conflicts in the same state and of S/R
+	conflicts involving multiple reductions.
+	* src/conflicts.c (resolve_sr_conflict): Don't assign the error action
+	set for a state here or Bison will abort if it is reassigned on a
+	later conflicted reduction in the same state.
+	Similarly, don't finalize and assign the solved conflicts report here
+	or it will be lost if it is reassigned on a later conflicted reduction
+	in the same state.
+	(set_conflicts): Instead, assign them both here after all S/R conflicts
+	in the state have been fully examined.
+	* src/print.c (shift_set): Rename to...
+	(no_reduce_set): ... this.
+	(print_reductions): Update for rename, and add %nonassoc error action
+	tokens to no_reduce_set so that, when printing the first remaining
+	reduction on an error action token, the reduction is enclosed in
+	brackets.
+	(print_results): Update for rename.
+	* tests/conflicts.at (Solved conflicts report for multiple reductions
+	in a state): New test case.
+	(%nonassoc error actions for multiple reductions in a state): New test
+	case.
+
+	* src/main.c (main): Don't depend on C99 features.
+
+2007-07-16  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* build-aux/.cvsignore: Add compile.
+	* lib/.cvsignore: Add charset.alias, ref-add.sed, ref-del.sed, and
+	uniwidth.
+
+2007-07-10  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* bootstrap (slurp): Create target directories that don't exist.
+	Specifically, we need lib/uniwidth/ because of recent Gnulib changes.
+
+2007-07-09  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* LR0.c (new_itemsets): Fix wording in comments: say item index rather
+	than item number.
+	* closure.c (closure): Likewise.
+	* state.h (reductions): Comment sorting of rules.
+	(state): Comment sorting of items.
+
+2007-07-02  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Fix C++ test cases after recent Gnulib changes.  Discussed starting at
+	<http://lists.gnu.org/archive/html/bug-bison/2007-07/msg00000.html>.
+	* examples/calc++/Makefile.am (DEFAULT_INCLUDES): Override Automake's
+	definition in order to avoid Gnulib headers since we don't use config.h
+	here.
+	* tests/output.at (AT_CHECK_OUTPUT_FILE_NAME): Use AT_DATA_GRAMMAR
+	rather than AT_DATA so that config.h is included.
+
+2007-07-01  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* data/glr.c (yy_yypstack, yypstates, yypdumpstack): Use YYFPRINTF
+	instead of fprintf.  Guard these functions with #if YYDEBUG instead of
+	#ifdef YYDEBUG for consistency with all other uses of YYDEBUG in Bison
+	and so that YYFPRINTF is guaranteed to be defined here.
+
+2007-05-29  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* src/muscle_tab.c (muscle_percent_define_invalid_value): Replace
+	with...
+	(muscle_percent_define_check_values): ... this more helpful function.
+	Again, it's not used yet, but it will be.
+	* src/muscle_tab.h: Likewise.
+
+	Improve some comments in parser table construction.
+	* src/LR0.c (new_itemsets): Explain sorting of itemset and kernel_base.
+	(generate_states): Don't mention ruleset, which is internal to closure.
+	* src/closure.c (closure): Explain sorting of core and itemset, which
+	is required for this function to behave correctly.
+	* src/closure.h (closure): Mention sorting.
+
+2007-05-28  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* src/lalr.c (state_lookahead_tokens_count): For code readability,
+	move the check for disabled transitions to an aver since conflict
+	resolution hasn't happened yet.
+
+	* src/lalr.c (state_lookahead_tokens_count): Remove the check that
+	labels a state as inconsistent just because it has error transitions.
+	The original form of this check appeared in revision 1.1 of lalr.c,
+	which was committed on 1991-12-21.  Now (at least), changing the
+	consistency label on such a state appears to have no useful effect in
+	any of the places it is examined, which I enumerate below.  The key
+	point to understanding each item in this enumeration is that a state
+	with an error transition is labelled consistent in the first place only
+	if it has no rules, so the check cannot matter for states that have
+	rules.  (1) Labelling a state as inconsistent will cause set_conflicts
+	to try to identify its conflicts, and a state must have *rules* to have
+	conflicts.  (2) Labelling a state as inconsistent will affect how
+	action_row sets the default *rule* for the state.  (3) Labelling a
+	state as inconsistent will cause build_relations to add lookback edges
+	to *rules* in that state.
+	* src/state.h (struct state): Word the comment for member consistent
+	more carefully.
+
+2007-05-27  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Don't depend on C99 features.
+	* src/conflicts.c (conflicts_update_state_numbers): Fix for-loop.
+	* src/lalr.c (lalr_update_state_numbers): Fix for-loop.
+	* src/reader.c (check_and_convert_grammar): Fix for-loop.
+	* src/state.c (state_mark_reachable_states): Fix for-loop.
+	(state_remove_unreachable_states): Fix for-loop.
+
+	Don't widen struct state with member reachable just to temporarily
+	record reachability.  Instead, use a local bitset.
+	* src/state.h (struct state): Remove member.
+	* src/state.c (state_new): Don't initialize it.
+	(state_mark_reachable_states): Rename to...
+	(state_record_reachable_states): ... this, and use bitset.
+	(state_remove_unreachable_states): Use bitset.
+
+2007-05-26  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* src/Makefile.am (yacc): Quote target action commands properly so
+	that the yacc script isn't corrupt.  Reported by Hans Aberg at
+	<http://lists.gnu.org/archive/html/bug-bison/2007-05/msg00003.html>.
+
+	* data/glr.c (yylval): As in yacc.c, don't extern in the header for
+	the case of pure parsers.  Reported by Frans Englich at
+	<http://lists.gnu.org/archive/html/help-bison/2007-05/msg00018.html>.
+	* THANKS: Add Frans Englich.
+
+	* NEWS (2.3a+): In the %code entry, reference section `Bison
+	Declaration Summary' from the manual now since the %code summary has
+	moved there.
+	* doc/bison.texinfo (Prologue Alternatives): Mention that directives
+	in the rules section must be terminated by semicolons.
+
+2007-05-20  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Extend the front-end API for %define variables to more completely
+	mirror the back-end.  This will be useful in the future.
+	* data/bison.m4 (b4_percent_define_get, b4_percent_define_ifdef):
+	Update comments to mention the new front-end counterparts of these
+	macros.
+	* src/muscle_tab.c (MUSCLE_COMMON_DECODE): New macro with common code
+	for muscle_string_decode and muscle_location_decode.
+	(muscle_string_decode): New static function.
+	(muscle_location_decode): Use MUSCLE_COMMON_DECODE.
+	(muscle_percent_define_get, muscle_percent_define_ifdef): New
+	functions.
+	(muscle_percent_define_flag_if): Use muscle_percent_define_ifdef and
+	muscle_percent_define_get to mimic the b4_percent_define_flag_if
+	implementation more closely.
+	(muscle_percent_define_invalid_value): New function.
+	* src/muscle_tab.h (muscle_percent_define_get,
+	muscle_percent_define_ifdef, muscle_percent_define_invalid_value):
+	Prototype.
+
+2007-05-07  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* NEWS (2.3a+): Mention yesterday's state-removal change.
+	(2.3a): Remove the %language entry, which was added after 2.3a.
+	* src/LR0.c, src/closure.c, src/closure.h, src/conflicts.c,
+	src/conflicts.h, src/lalr.c, src/lalr.h, src/print.c,
+	src/print_graph.c, src/state.c, src/state.h, tests/conflicts.at,
+	tests/existing.at: Update copyright date.
+
+2007-05-06  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	If conflict resolution makes states unreachable, remove those states,
+	report rules that are then unused, and don't report conflicts in those
+	states.
+	* src/conflicts.c, src/conflicts.h (conflicts_update_state_numbers):
+	New global function.
+	* src/lalr.c, src/lalr.h (lalr_update_state_numbers): New global
+	function.
+	* src/main.c (main): After conflict resolution, remove the unreachable
+	states and update all data structures that reference states by number.
+	* src/state.c (state_new): Initialize each state's reachable member to
+	false.
+	(state_mark_reachable_states): New static function.
+	(state_remove_unreachable_states): New global function.
+	* src/state.h (struct state): Add member bool reachable.
+	(state_remove_unreachable_states): Prototype.
+	* tests/conflicts.at (Unreachable States After Conflict Resolution):
+	New test case.
+	* tests/existing.at (GNU pic Grammar): Update test case output now that
+	an unused rule is discovered.
+
+2007-05-06  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Minor code cleanup in parser table construction.
+	* src/LR0.c (new_itemsets): Use item_number_is_symbol_number.
+	(new_itemsets, save_reductions): Update for rename to nitemset.
+	* src/closure.c (nritemset): Rename to...
+	(nitemset): ... this since the "r" appears to meaningless and isn't
+	used in the comments.
+	(closure): Update for rename.
+	* src/closure.h (nritemset): Update extern to...
+	(nitemset): ... this.
+	* src/lalr.c (LA): Fix a typo in comments.
+	* src/print.c (print_core): Update for rename to nitemset.
+	* src/print_graph.c (print_graph): Likewise.
+	* src/state.h: Fix some typos in header comments.
+
+2007-04-04  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* THANKS: Use ASCII for Sebastien Fricker's name.  Bison source
+	still sticks to ASCII.  Sorry!
+
+	* README-hacking: New file, taken mostly from coreutils, with changes
+	for Bison.  Contains much of the contents of:
+	* README-cvs: Remove.
+	* bootstrap: Sync from gnulib.
+	* build-aux/.cvsignore: Remove *.t, mkinstalldirs.
+	* lib/.cvsignore: Add wchar.h, wctype.h.  Remove exit.h.
+
+2007-03-10  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* doc/bison.texinfo (Destructor Decl): Fix typo reported by Sebastian
+	Setzer.
+	(Java Differences): Fix some typos.
+	* THANKS: Add Sebastian Setzer.
+
+2007-03-07  Paolo Bonzini  <bonzini@gnu.org>
+
+	* data/java.m4 (b4_single_class_if): Remove.
+	(b4_abstract_if): Look at "%define abstract".
+	(b4_lexer_if): New.
+	(b4_union_name): Rename...
+	(b4_yystype): ... to this.  Map to "%define stype".
+	(b4_rhs_value, b4_parse_param_decl, b4_lex_param_decl,
+	b4_maybe_throws): Fix quoting.
+	(b4_lex_param_call): Move below to keep b4_*_param_decl close.
+	* data/lalr1.java (Lexer interface): Always define.
+	(Lexer interface within parser class): Remove.
+	(YYLexer class): New, used when "%code lexer" is present.
+	(constructor): When "%code lexer" is used, pass %lex-param
+	to the lexer constructor.
+	(yylex, yyparse): Remove %lex-param from method invocations
+	(YYStack, yyaction, yyparse): Rename b4_union_name to b4_yystype.
+
+	* doc/bison.texinfo (Java Bison Interface): Mention "%define
+	abstract".  Rename "%define union_name" to "%define stype".
+	Rename method names according to previous patch.
+	(Java Scanner Interface): Describe "%code lexer" instead of
+	"%pure-parser" and "%define single_class".
+	(Java Differences): Mention "%code lexer".
+
+	* tests/java.at (_AT_DATA_JAVA_CALC_Y): Remove final argument.
+	Include scanner here, using macros from tests/local.at.
+	(AT_DATA_CALC_Y): Remove final argument.
+	(_AT_CHECK_JAVA_CALC): Likewise.
+	(AT_CHECK_JAVA_CALC): Likewise.  Test all four combinations
+	of %locations and %error-verbose.
+	(main): Test with and without %lex-param.
+	* tests/local.at (_AT_BISON_OPTION_PUSHDEFS): Push AT_LEXPARAM_IF.
+	(AT_BISON_OPTION_POPDEFS): Pop it.
+
+2007-03-07  Juan Manuel Guerrero  <juan.guerrero@gmx.de>
+
+	DJGPP spefic issue.  Inhibit the use of disallowed characters for
+	file name genertion on Win98, WinXP, etc.  These are |<>":?*\
+	and concern testsuite case 46.
+	* Makefile.am: djgpp/testsuite.sed added to EXTRA_DIST
+	* djgpp/testsuite.sed: Inhibit the use of disallowed characters.
+	* djgpp/config.bat: Inhibit the use of disallowed characters.
+
+2007-03-02  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Miscellaneous %define and %code cleanup.
+	* data/bison.m4 (b4_percent_define_flag_if): Correct comments on how
+	values are interpreted.
+	* doc/bison.texinfo (Decl Summary): Clean up and extend %define
+	documentation a little more.
+	* src/muscle_tab.c (MUSCLE_USER_NAME_CONVERT,
+	muscle_percent_define_insert, muscle_percent_code_grow): New
+	functions/macros.
+	* src/muscle_tab.h (muscle_percent_define_insert,
+	muscle_percent_code_grow): Prototype.
+	* src/parse-gram.y (prologue_declaration): Use
+	muscle_percent_define_insert and muscle_percent_code_grow when parsing
+	%define and %code directives.
+
+	Make it easy to share %define boolean variables between the front-end
+	and back-end.  Though not used yet, this will be useful in the future.
+	* data/bison.m4 (b4_check_user_names): Rewrite comments to talk about
+	Bison uses of names rather than just skeleton uses of names.
+	(b4_percent_define_get, b4_percent_define_ifdef): Rename
+	b4_percent_define_skeleton_variables(VARIABLE) to
+	b4_percent_define_bison_variables(VARIABLE).
+	(b4_percent_code_get, b4_percent_code_ifdef): Rename
+	b4_percent_code_skeleton_qualifiers(QUALIFIER) to
+	b4_percent_code_bison_qualifiers(QUALIFIER).
+	(b4_check_user_names_wrap): Update for renames.
+	* src/muscle_tab.c, src/muscle_tab.h (muscle_percent_define_flag_if,
+	muscle_percent_define_default): New functions mimicking
+	b4_percent_define_flag_if and b4_percent_define_default.
+
+	For %define variables, report locations for invalid values and
+	redefinitions.
+	* data/bison.m4 (b4_percent_define_flag_if): Read
+	b4_percent_define_loc(VARIABLE) to report the location of an invalid
+	value for VARIABLE.
+	(b4_percent_define_default): Save a special location in
+	b4_percent_define_loc(VARIABLE) in case the default value for VARIABLE
+	must later be reported as invalid.
+	* src/muscle_tab.c (muscle_location_grow, muscle_location_decode): New
+	functions.
+	(muscle_percent_define_insert): Record the location of VARIABLE in
+	muscle percent_define_loc(VARIABLE), and use it to report the previous
+	location for a redefinition.
+	(muscle_percent_define_flag_if): Update like b4_percent_define_flag_if.
+	(muscle_percent_define_default): Update like b4_percent_define_default.
+	(muscle_grow_user_name_list): Rename to...
+	(muscle_user_name_list_grow): ... this for consistency and use
+	muscle_location_grow.
+	* src/muscle_tab.h (muscle_location_grow): Prototype.
+	* tests/input.at (%define errors): Update expected output.
+	* tests/skeletons.at (%define boolean variables: invalid skeleton
+	defaults): New test case.
+
+2007-02-28  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* src/print.c (lookahead_set, state_default_rule): Remove.
+	(print_reductions): Replace state_default_rule invocation with
+	equivalent use of yydefact, which was computed in token_actions in
+	tables.c.
+	(print_results): Don't allocate lookahead_set.
+
+2007-02-27  Paolo Bonzini  <bonzini@gnu.org>
+
+	* data/lalr1.java: Prefix all private members with yy.
+
+2007-02-24  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Use YYFPRINTF instead of fprintf where appropriate.  Reported by
+	Sebastien Fricker at
+	<http://lists.gnu.org/archive/html/bug-bison/2007-02/msg00035.html>.
+	* THANKS: Add Sebastien Fricker.
+	* data/glr.c, data/push.c, data/yacc.c (yy_reduce_print): Implement.
+	* doc/bison.texinfo (Tracing): Make it clearer that YYFPRINTF must
+	accept a variable number of arguments.
+
+2007-02-19  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* bootstrap: Remove occurrences of .#bootmp from lib/Makefile.
+
+2007-02-13  Juan Manuel Guerrero  <juan.guerrero@gmx.de>
+
+	* djgpp/config.bat: Adjustments concerning the use of autoconf 2.61.
+	* djgpp/config.sed: Adjustments concerning the use of autoconf 2.61.
+	* djgpp/config.site: Adjustments concerning the use of autoconf 2.61.
+
+2007-02-11  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Undo my 2007-02-07 change, switching back to the c-strcase module
+	introduced in the 2007-02-03 change.  Bruno Haible reported that
+	the 2007-02-07 change would be dangerous in Turkish if we add a
+	language whose name contains "i", since "i" is not lowercase "I"
+	in Turkish.
+	* bootstrap.conf (gnulib_modules): Add c-strcase.  Remove strcase.
+	* lib/.cvsignore: Add c-ctype.c, c-ctype.h, c-strcase.h,
+	c-strcasecomp.c, c-strncasecmp.c.  Remove strcasecmp.c, strncasecmp.c.
+	* m4/.cvsignore: Remove strcase.m4.
+	* src/getargs.c: Revert 2007-02-07 change, as follows.
+	Include c-strcase.h.
+	(language_argmatch): Use c_strcasecmp rather than strcasecmp.
+
+2007-02-11  Bruno Haible  <bruno@clisp.org>
+
+	Enable the Java related testsuite tests when the only Java compiler
+	found is a gcj < 4.3.  Discussed at
+	<http://lists.gnu.org/archive/html/bug-bison/2007-02/msg00016.html>.
+	* configure.ac (gt_JAVACOMP): Don't specify a target_version.
+
+2007-02-11  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* data/Makefile.am: Update copyright date.
+	* data/push.c (yypull_parse): Report memory exhaustion and return 2 if
+	yypstate_new returns NULL.
+	(yypstate_new): Return NULL if malloc does.
+	* src/reader.c (packgram): Move translation of rule actions from the
+	beginning of packgram to...
+	(check_and_convert_grammar): ... here right before packgram is invoked
+	so it's easier to write more complete comments, and remove redundant
+	code.
+
+2007-02-10  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	As in semantic actions, make @$ in %initial-action, %destructor, and
+	%printer imply %locations.
+	* src/scan-code.l (SC_SYMBOL_ACTION): Set locations_flag = true when
+	scanning @$.
+	* tests/actions.at (AT_CHECK_ACTION_LOCATIONS): New macro supporting...
+	(@$ in %initial-action implies %locations,
+	@$ in %destructor implies %locations,
+	@$ in %printer implies %locations): ... these new test cases.
+
+2007-02-07  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Undo most of the 2007-02-03 change, switching to the strcase module
+	now that gnulib strcase has been fixed.
+	* bootstrap.conf (gnulib_modules): Remove c-strcase.  Add strcase.
+	* lib/.cvsignore: Remove c-ctype.c, c-ctype.h, c-strcase.h,
+	c-strcasecomp.c, c-strncasecmp.c.  Add strcasecmp.c, strncasecmp.c
+	* m4/.cvsignore: Add strcase.m4.
+	* src/getargs.c: Revert 2007-02-03 change, as follows.
+	Don't include c-strcase.h.
+	(language_argmatch): Use strcasecmp rather than c_strcasecmp.
+	strcasecmp has "unspecified behavior" outside the POSIX locale,
+	but it works fine in practice if at least one argument is ASCII,
+	as is the case in Bison.
+
+2007-02-07  Paolo Bonzini  <bonzini@gnu.org>
+
+	* tests/java.at: Skip tests if only one of javac/java is present.
+	Reported by Joel E. Denny.
+	* tests/atlocal.in: Adjust copyright years.
+
+2007-02-05  Paolo Bonzini  <bonzini@gnu.org>
+
+	* data/lalr1.java (Stack): Work around old verifiers that disallow
+	access to the private fields of an inner class, from the outer class.
+	We can make Stack's fields public because user code doesn't have access
+	to the instance of Stack used by parse().  Reported by Paul Eggert.
+
+2007-02-03  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* .cvsignore: Add javacomp.sh, javaexec.sh.  Is this really
+	the right spot for these files?
+	* bootstrap.conf (gnulib_modules): Add c-strcase.
+	* lib/.cvsignore: Add c-ctype.c c-ctype.h, c-strcasecomp.c,
+	c-strncasecmp.c.
+	* src/getargs.c: Include c-strcase.h.
+	(language_argmatch): Use c_strcasecmp rather than strcasecmp,
+	to avoid unspecified behavior.
+
+2007-02-01  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* doc/bison.texinfo (Decl Summary): Correct typo.
+
+2007-01-30  Paolo Bonzini  <bonzini@gnu.org>
+
+	* data/bison.m4 (b4_percent_define_flag_if): Don't treat 0 as false.
+	Complain if the value does not match empty, "true" or "false".
+	* data/c++.m4: Adjust default definitions of %define variables.
+	* data/java.m4: Adjust default definitions of %define variables.
+	* doc/bison.texinfo (Decl Summary): Adjust the %define entry according
+	to above behavior.
+	* tests/input.at (Boolean %define variables): Test new behavior.
+
+2007-01-29  Paolo Bonzini  <bonzini@gnu.org>
+
+	* NEWS: Mention java.
+	* TODO: Remove things that are done.
+	* bootstrap.conf: Add javacomp-script and javaexec-script.
+	* configure.ac: Invoke gt_JAVACOMP and gt_JAVAEXEC.
+
+	* data/Makefile.am: Add new files.
+	* data/java-skel.m4: New.
+	* data/java.m4: New.
+	* data/lalr1.java: New.
+
+	* doc/bison.texinfo: Put "A Complete C++ Example" under
+	C++ Parsers.  Add Java Parsers.  Put C++ Parsers and Java Parsers
+	under Other Languages.
+
+	* src/getargs.c (valid_languages): Add Java.
+	* src/getargs.h (struct bison_language): Update size of string fields.
+
+	* tests/Makefile.am: Add java.at.
+	* tests/atlocal.in: Add CONF_JAVA and CONF_JAVAC.
+	* tests/java.at: New.
+	* tests/testsuite.at: Include it.
+
+2007-01-28  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Clean up.
+	* src/scan-skel.l (at_directive_perform): Add at_directive_argc and
+	at_directive_argv arguments so these no longer have to be global
+	variables.  Also, update the implementation for the following changes.
+	(fail_for_at_directive_too_many_args,
+	fail_for_at_directive_too_few_args): Add at_directive_name argument.
+	(at_directive_name): Remove as at_directive_argv[0] will be used for
+	this now.
+	(AT_DIRECTIVE_ARGC_MAX): Increment to make space in at_directive_argv
+	for the directive name.
+	(at_directive_argc, at_directive_argv): Make these local within
+	skel_lex instead of global.
+	(INITIAL): Update directive start action for above changes.
+	(SC_AT_DIRECTIVE_ARG): Rename to...
+	(SC_AT_DIRECTIVE_ARGS): ... this, and update for above changes.
+	(SC_AT_DIRECTIVE_SKIP_WS): Update.
+	(scan_skel): Move yylex_destroy to...
+	(skel_scanner_free): ... here.
+	* tests/skeletons.at (installed skeleton file name): Rename to...
+	(installed skeleton file names): ... this.
+
+2007-01-27  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* ChangeLog: For changes in doc/bison.texinfo, consistently reference
+	node names: say "Table of Symbols" not "Bison Symbols", and say "Decl
+	Summary" not "Directives".
+	* doc/bison.texinfo (Decl Summary, Calc++ Parser): Cross-reference the
+	%code entry in "Decl Summary" rather than the one in "Table of Symbols"
+	since the former is now the more complete one.
+	(Prologue Alternatives): Likewise and do the same for %defines.
+	(Table of Symbols): Add summary of %code, add summary of %define, and
+	move full %code documentation to...
+	(Decl Summary): ... here for consistency with other entries in these
+	sections.
+	Move %define entry in order to keep this list alphabetized.
+	Reword %define entry a little to put less emphasis on the skeleton
+	concept, which most users shouldn't have to think about.
+
+2007-01-26  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Adjust to recent gnulib changes.
+	* lib/.cvsignore: Remove stpcpy.h, strndup.h, strnlen.h.
+	Add string.h, string_.h, unistd_.h, wchar_.h.
+	* m4/.cvsignore: Add gnulib-common.m4, string_h.m4, wchar.m4.
+	* src/system.h: Don't include <stpcpy.h>; this is now done by
+	<string.h>.
+
+2007-01-23  Paolo Bonzini  <bonzini@gnu.org>
+
+	Simplify implementation of unqualified %code, implement macros for
+	uniform treatment of boolean %define flags.  Document %define.
+	* data/bison.m4 (b4_percent_define_ifdef, b4_percent_define_flag_if,
+	b4_percent_code_ifdef): New.
+	(b4_percent_code_get): Map unqualified %code to b4_percent_code().
+	* data/c++.m4: Define default value for global_tokens_and_yystype.
+	* data/glr.cc: Likewise.
+	* data/location.cc: Use b4_percent_define_flag_if.
+
+	* doc/bison.texinfo (Decl Summary): Document %define.
+
+	* src/parse-gram.y (Unqualified %code): Change muscle name to
+	b4_percent_code().
+	(content.opt): Default to empty.
+
+2007-01-17  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Implement support for relative and absolute skeleton file names.
+	Discussed starting at
+	<http://lists.gnu.org/archive/html/bison-patches/2006-12/msg00071.html>.
+	* doc/bison.texinfo (Decl Summary): Document in %skeleton entry.
+	(Bison Options): Document in --skeleton entry.
+	* src/output.c (output_skeleton): Use strncpy rather than strcpy since
+	full_skeleton can't necessarily hold all of pkgdatadir.
+	If the specified skeleton file name contains a `/', don't prepend
+	pkgdatadir.
+	* src/parse-gram.y (prologue_declaration): If the specified skeleton
+	file name contains a `/', prepend the grammar file directory.
+	* tests/Makefile.am (TESTSUITE_AT): Add skeletons.at.
+	* skeletons.at: New file.
+	(relative skeleton file names): New test case.
+	(installed skeleton file names): New test case.
+	* tests/testsuite.at: Include skeletons.at.
+
+	* bootstrap: Update copyright to 2007.
+
+2007-01-17  Paolo Bonzini  <bonzini@gnu.org>
+
+	* bootstrap: Remove occurrences of .#bootmp from the files.
+
+2007-01-17  Akim Demaille  <akim@epita.fr>
+
+	* doc/bison.texinfo (Calc++ Parser): Don't try to alias
+	nonterminals.
+	Use per-type %printer.
+
+2007-01-17  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* NEWS, data/c++-skel.m4, data/c++.m4, data/c-skel.m4, data/c.m4,
+	data/glr.c, data/glr.cc, data/lalr1.cc, data/location.cc,
+	djgpp/config.site, src/files.c, src/files.h, src/main.c,
+	src/muscle_tab.c, src/muscle_tab.h, src/parse-gram.y, src/reader.h,
+	src/scan-skel.h, src/scan-skel.l, tests/actions.at, tests/calc.at,
+	tests/glr-regression.at, tests/input.at, tests/local.at,
+	tests/output.at, tests/torture.at: Update copyright to 2007.
+
+2007-01-16  Akim Demaille  <akim@epita.fr>
+
+	* doc/bison.texinfo (Calc++ Parsing Driver): Let "parse" return an
+	error code.
+	(Calc++ Scanner): Exit with failure if we can't open the input
+	file.
+	Accept "-" standing for stdin.
+	(Calc++ Top Level): Print the result only if the parsing was
+	successful.
+
+2007-01-16  Akim Demaille  <akim@epita.fr>
+
+	* data/lalr1.cc (yy_reduce_print_): Add a missing end-of-line.
+
+2007-01-15  Paolo Bonzini  <bonzini@gnu.org>
+	and Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Clean up %define and %code implementation in M4 some.  Most
+	importantly, rename all related macros to be in the b4_percent_define
+	and b4_percent_code namespaces.  Also, complete support for `.' in
+	%define variable names and %code qualifiers.
+	* data/bison.m4 (b4_check_user_names): Check for special
+	"SKELETON-NAMESPACE(name)" macros instead of using two nested
+	m4_foreach loops.
+	(b4_get_percent_define, b4_get_percent_code): Rename to...
+	(b4_percent_define_get, b4_percent_code_get): ... these.
+	Extend documentation with examples.
+	For SKELETON-NAMESPACE (as documented for b4_check_user_names), use
+	b4_percent_define_skeleton_variables and
+	b4_percent_code_skeleton_qualifiers.
+	Expect any value for the %define variable `foo' to be stored in the
+	macro named `b4_percent_define(foo)'; expect any %code blocks for the
+	qualifier `foo' to be stored in a macro named `b4_percent_code(foo)';
+	expect any unqualified %code blocks to be stored in a macro named
+	`b4_percent_code_unqualified'.
+	Use m4_indir so that %define variable names and %code qualifiers can
+	contain `.', which is allowed by the grammar parser.
+	(b4_percent_define_default): New macro to set a default value for a
+	%define variable.
+	(m4_wrap): Update wrapped code, and fix some underquoting.
+	(b4_check_user_names_wrap): Update and define outside the m4_wrap.
+	Expect grammar uses of %define variables and %code qualifiers to be
+	defined in b4_percent_define_user_variables and
+	b4_percent_code_user_qualifiers.
+	* data/c++.m4: Use b4_percent_define_default rather than
+	m4_define_default.  Fix some underquoting.  Skeleton usage of %define
+	variable define_location_comparison now implies skeleton usage of
+	%define variable filename_type.
+	* data/glr.c, data/glr.cc, data/lalr1.cc, data/location.cc,
+	data/push.c, data/yacc.c: Update macro names.
+	* src/parse-gram.y (prologue_declaration, grammar_declaration): Update
+	muscle names.
+
+2007-01-14  Juan Manuel Guerrero  <juan.guerrero@gmx.de>
+
+	DJGPP specific issues.
+
+	* djgpp/config.site: Set ac_cv_path_mkdir to a sane DJGPP specific
+	default.  Set gl_cv_absolute_wctype_h to a sane DJGPP specific default.
+
+2007-01-09  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* tests/glr-regression.at: Use AT_PARSER_CHECK rather than AT_CHECK to
+	run parsers in all tests so that Valgrind is invoked during
+	maintainer-check-valgrind.
+	(Duplicate representation of merged trees): Free all semantic values.
+	(Duplicated user destructor for lookahead): Likewise.
+
+2007-01-09  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* tests/local.at (AT_PARSER_CHECK): Add a PRE argument to specify a
+	command-line prefix.
+	* tests/torture.at (Exploding the Stack Size with Alloca): Stderr is
+	ignored, so use that PRE to set --log-fd=1 in VALGRIND_OPTS so we don't
+	miss Valgrind messages.
+	(Exploding the Stack Size with Malloc): Likewise.
+
+2007-01-09  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Ignore YYSTACK_USE_ALLOCA for push parsers since the stacks can't be
+	locals.  Reported by Juan Manuel Guerrero at
+	<http://lists.gnu.org/archive/html/bug-bison/2007-01/msg00000.html>.
+	* data/push.c: Enclose the #ifdef YYSTACK_USE_ALLOCA in b4_push_if.
+	Fix some indentation also.
+	* tests/torture.at (Exploding the Stack Size with Alloca): Add comment
+	explaining this issue.
+
+2007-01-09  Paolo Bonzini  <bonzini@gnu.org>
+	and Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Simplify union and prologue handling, and escape union and lex/parse
+	params with digraphs.
+	* data/bison.m4 (b4_pre_prologue, b4_post_prologue): Set their default
+	values to the empty string since these are no longer guaranteed
+	initialized by the front-end.
+	* data/glr.c, data/glr.cc, data/lalr1.cc, data/push.c, data/yacc.c: Add
+	braces around b4_user_stype since this is no longer done by the
+	front-end.
+	* src/files.c, src/files.h (pre_prologue_obstack,
+	post_prologue_obstack): Remove.
+	* src/muscle_tab.c (muscle_pair_list_grow): Don't duplicate header
+	comments here.  Use MUSCLE_OBSTACK_SGROW so that values are escaped
+	with digraphs.  This fixes lex params and parse params.
+	* src/muscle_tab.h (muscle_pair_list_grow): Update comments.
+	* src/output.c (prepare): Remove muscle insertion of the prologues.
+	(output): Remove freeing of pre_prologue_obstack and
+	post_prologue_obstack.
+	* src/parse-gram.y (prologue_declaration): Use muscle_code_grow rather
+	than prologue_augment for prologue parsing so you don't need prologue
+	obstacks.
+	(grammar_declaration): For %union RHS, use `braceless' instead of
+	"{...}" so that braces are already stripped and code is escaped with
+	digraphs.
+	* src/reader.c (prologue_augment): Remove.
+	(reader): Remove initialization of pre_prologue_obstack and
+	post_prologue_obstack.
+	* src/reader.h (prologue_augment): Remove.
+
+	* data/c.m4: Remove stray parenthesis.
+
+2007-01-08  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Remove quotes from variables names in %define directives and from
+	qualifiers in %code directives, and restrict the characters that are
+	allowed in them to M4-friendly ones.  For %define, continue to support
+	the quoted form as a deprecated feature.  Discussed starting at
+	<http://lists.gnu.org/archive/html/bison-patches/2007-01/msg00023.html>.
+	* NEWS (2.3a+): Add entry for the change to %define.  Update entry for
+	%code.
+	* doc/bison.texinfo (Prologue Alternatives): Update.
+	(Decl Summary): In %defines entry, update mention of `%code requires'
+	and `%code provides'.
+	(C++ Location Values): Update %define uses.
+	(Calc++ Parser Interface): Likewise.
+	(Calc++ Parser): Likewise, and update `%code requires' uses.
+	(Table of Symbols): Update %code documentation.
+	* src/parse-gram.y (prologue_declaration): For %define variables, use
+	`variable' instead of `STRING'.
+	(grammar_declaration): For %code qualifiers, use `ID' instead of
+	`STRING'.
+	(variable): New nonterminal that takes an `ID' or a `STRING'.
+	* tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Update %code
+	and %define uses.
+	* tests/calc.at (_AT_DATA_CALC_Y): Update %define use.
+	* tests/input.at (Reject unused %code qualifiers): Update %code uses.
+	(%define errors): Update %define uses.
+
+2007-01-08  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* src/parse-gram.y (prologue_declaration): Use MUSCLE_INSERT_STRING
+	instead of muscle_insert for %define values so that M4-special
+	characters are replaced with digraphs.
+	* tests/input.at (%define errors): Extend to check weird values.
+
+2007-01-08  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Instead of having skeletons declare all valid %define variables and
+	%code qualifiers, provide macros that retrieve the associated values
+	and build these lists automatically.  Thus Bison will now warn when a
+	variable or qualifier is not used by the skeleton in the current
+	invocation regardless of whether it might sometimes be used by that
+	skeleton in other invocations.  Also, move all %define value macros to
+	the b4_percent_define_ namespace, and remove the %define "NAME" {CODE}
+	form, which is replaced by %code.
+	* data/bison.m4 (b4_check_for_unrecognized_names): Rename to...
+	(b4_check_user_names): ... this, and change the series of valid name
+	arguments to a single list argument for names used in the skeleton
+	similar to the existing list argument for names used in the grammar.
+	Warn instead of complaining.
+	(b4_get_percent_define, b4_get_percent_code): New to retrieve %define
+	values and %code code, to format %code code properly, and to build
+	lists of all %define variables and %code qualifiers used in the
+	skeleton: b4_skeleton_percent_define_variables and
+	b4_skeleton_percent_code_qualifiers.
+	(b4_check_percent_define_variables, b4_check_percent_code_qualifiers):
+	Remove, and...
+	(m4_wrap): ... m4_wrap b4_check_user_names invocations instead so that
+	the skeleton names lists can finish building first.  In place of
+	b4_used_percent_define_variables and b4_used_percent_code_qualifiers,
+	expect the lists b4_user_percent_define_variables and
+	b4_user_percent_code_qualifiers.
+	* data/c++.m4: Where setting default values for b4_parser_class_name,
+	b4_location_type, b4_filename_type, b4_namespace, and
+	b4_define_location_comparison, update their names to the
+	b4_percent_define_ namespace.
+	* data/glr.c: Don't use b4_check_percent_define_variables and
+	b4_check_percent_code_qualifiers.  Use b4_get_percent_code.
+	* data/glr.cc, data/lalr1.cc: Likewise, and use b4_get_percent_define.
+	(b4_parser_class_name, b4_namespace): Define these using
+	b4_get_percent_define for parser_class_name and namespace.
+	* data/location.cc: Use b4_get_percent_define.
+	* data/push.c: Don't use b4_check_percent_define_variables and
+	b4_check_percent_code_qualifiers.  Use b4_get_percent_code.
+	* data/yacc.c: Likewise, and don't call m4_exit in
+	b4_use_push_for_pull_if or m4_wrap code will never execute.
+	* src/muscle_tab.c, src/muscle_tab.h (muscle_grow_used_name_list):
+	Rename to...
+	(muscle_grow_user_name_list): ... this for consistency with the
+	terminology used in bison.m4.
+	* src/parse-gram.y (prologue_declaration): Prepend "percent_define_" to
+	%define variable names, and rename muscle used_percent_define_variables
+	to user_percent_define_variables.
+	(grammar_declaration): Rename muscle used_percent_code_qualifiers to
+	user_percent_code_qualifiers.
+	(content): Remove.
+	(content.opt): Replace content RHS with STRING RHS so %define "NAME"
+	{CODE} form is no longer accepted.
+	* tests/input.at (Reject bad %code qualifiers): Rename to...
+	(Reject unused %code qualifiers): ... this, and update test output.
+	(%define error): Update test output.
+
+2007-01-07  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Check for unrecognized %define variables similar to checking for
+	unrecognized %code qualifiers.  Check for redefined %define variables.
+	* data/bison.m4 (b4_check_for_unrecognized_names): New macro that
+	generalizes...
+	(b4_check_percent_code_qualifiers): ... this, which now wraps it.
+	(b4_check_percent_define_variables): New, also wraps it.
+	* data/glr.c: Unless glr.cc is wrapping glr.c, declare no valid %define
+	variables using b4_check_percent_define_variables.
+	* data/glr.cc, data/lalr1.cc: Declare the valid %define variables as
+	all those exercised in the test suite and all those listed in the
+	`Default values' section of c++.m4.  Are there others?
+	* data/push.c, data/yacc.c: Declare no valid %define variables.
+	* src/muscle_tab.c, src/muscle_tab.h (muscle_find_const): New function,
+	similar to muscle_find, but it works even when the muscle stores a
+	const value.
+	(muscle_grow_used_name_list): New function for constructing the used
+	name list muscles that b4_check_for_unrecognized_names requires.
+	* src/parse-gram.y (prologue_declaration): Warn if a variable is
+	%define'd more than once.  Define the b4_used_percent_define_variables
+	muscle with muscle_grow_used_name_list.
+	(grammar_declaration): Abbreviate %code code with
+	muscle_grow_used_name_list.
+	* tests/input.at (%define errors): New.
+
+2007-01-06  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Provide warn_at, complain_at, and fatal_at function callbacks to the
+	skeletons, and use this for %code qualifier complaints.
+	* data/bison.m4 (b4_error_at): New, invoked by...
+	(b4_warn_at, b4_complain_at, b4_fatal_at): ... these new macros to wrap
+	the skeleton scanner's new @warn_at(...@), @complain_at(...@), and
+	@fatal_at(...@) directives.
+	(b4_check_percent_code_qualifiers): Rewrite to expect locations for
+	qualifiers in b4_used_percent_code_qualifiers and to use
+	b4_complain_at.
+	* src/location.c, src/location.h (boundary_set_from_string): New global
+	function.
+	* src/muscle_tab.c, src/muscle_tab.h (muscle_boundary_grow): New global
+	function.
+	* src/parse-gram.y (grammar_declaration): Add locations for qualifiers
+	to b4_used_percent_code_qualifiers.
+	* src/scan-skel.l (fail_for_at_directive_too_few_args): New static
+	function.
+	(AT_DIRECTIVE_ARGC_MAX): Increase for boundary arguments.
+	(lineno): Rename to...
+	(out_lineno): ... this so I don't misunderstand it again.
+	(SC_AT_DIRECTIVE_SKIP_WS): Don't increment out_lineno for newlines
+	here; these newlines are in the input but not the output file.
+	(SC_AT_DIRECTIVE_ARG): Likewise.  Extract directive execution to...
+	(at_directive_perform): ... this new static function, and add handling
+	of new @warn_at(...@), @complain_at(...@), and @fatal_at(...@)
+	directives.
+	* tests/input.at (Reject bad %code qualifiers): Update test output with
+	locations and extend.
+
+	* tests/output.at (Output file name: [, Output file name: ]): Remove
+	bogus comment about these tests failing.
+
+2007-01-06  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Clean up b4_check_percent_code_qualifiers a little.
+	* data/bison.m4 (b4_check_percent_code_qualifiers): Expect qualifiers
+	in b4_used_percent_code_qualifiers to be double-M4-quoted.  Rewrite
+	documentation and add examples.
+	* src/parse-gram.y (grammar_declaration): Double-M4-quote those
+	qualifiers here.
+
+2007-01-05  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Don't use m4_divert since it makes m4_divert_push and m4_divert_pop
+	unreliable -- especially when they're hidden inside another macro.
+	* data/bison.m4, data/c++-skel.m4, data/c++.m4, data/c-skel.m4,
+	data/c.m4: Remove m4_divert(-1).
+	* data/glr.c, data/glr.cc, data/lalr1.cc, data/location.cc,
+	data/push.c, data/yacc.c: Likewise, and replace m4_divert(0) with
+	m4_divert_push(0) and m4_divert_pop(0).
+	* src/output.c (output_skeleton): Don't add an m4_divert_push(0) and
+	an m4_wrap([m4_divert_pop(0)]) to the M4.  Diversion -1, which is
+	pushed and popped by m4sugar, should be first on the stack.
+
+	Provide warn, complain, and fatal function callbacks to the skeletons.
+	This provides more flexibility than m4_fatal, improves the error
+	message format, and captures messages for translation.  Discussed
+	starting at
+	<http://lists.gnu.org/archive/html/bison-patches/2006-12/msg00063.html>.
+	* data/bison.m4 (b4_error): New, invoked by...
+	(b4_warn, b4_complain, b4_fatal): ... these new macros to wrap the
+	skeleton scanner's new @warn(...@), @complain(...@), and @fatal(...@)
+	directives.  Because these M4 macros might be called when the current
+	diversion is -1 or 0, m4_divert_push and m4_divert_pop is used; thus
+	the previous removal of uses of m4_divert, which caused trouble.
+	(b4_check_percent_code_qualifiers): Use b4_complain instead of
+	m4_fatal to report unrecognized %code qualifiers.
+	* data/c++-skel.m4: Use b4_complain instead of m4_fatal to report C++
+	push parser requests.
+	* data/glr.c: Use b4_complain instead of m4_fatal to report
+	non-deterministic push parser requests.
+	Update @output usage to @output(...@) form.
+	* data/glr.cc, data/lalr1.cc: Use b4_fatal instead of m4_fatal to
+	report missing %defines.  Update @output usage to @output(...@) form.
+	* data/location.cc, data/push.c, data/yacc.c: Update @output usage to
+	@output(...@) form.
+	* src/main.c (main): Invoke skel_scanner_free.
+	* src/scan-skel.h (skel_scanner_free): Prototype new function.
+	* src/scan-skel.l (FLEX_NO_OBSTACK): Don't define; we now need the
+	obstack_for_string from flex-scanner.h.
+	(YY_DECL): Use to declare skel_lex static.
+	(decode_at_digraphs): Remove; now handled in the new
+	SC_AT_DIRECTIVE_ARG start condition.
+	(fail_for_at_directive_too_many_args, fail_for_invalid_at): New static
+	functions.
+	(at_directive_name, AT_DIRECTIVE_ARGC_MAX, at_directive_argc,
+	at_directive_argv): New static globals.
+	(INITIAL): Use fail_for_invalid_at.
+	Don't parse `@output file_name\n' or `@basename(...@)'.  Instead,
+	recognize the start of a generalized `@directive(...@)' form and
+	start...
+	(SC_AT_DIRECTIVE_ARG): ... this new start condition to parse the
+	directive args (using the new obstack_for_string), to decode the
+	contained @ diagraphs, and to perform the directive.  It recognizes
+	@basename(...@), @warn(...@), @complain(...@), @fatal(...@), and
+	@output(...@).
+	(SC_AT_DIRECTIVE_SKIP_WS): New start condition started by
+	SC_AT_DIRECTIVE_ARG to skip whitespace after the argument delimiter,
+	`@,'.
+	(scan_skel): Initialize obstack_for_string on the first call.
+	(skel_scanner_free): New function to free obstack_for_string.
+	* tests/input.at (Reject bad %code qualifiers): Update test output.
+
+2007-01-04  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Consolidate the 4 prologue alternative directives (%code, %requires,
+	%provides, and %code-top) into a single %code directive with an
+	optional qualifier field.  Discussed at
+	<http://lists.gnu.org/archive/html/bison-patches/2007-01/msg00012.html>.
+	* NEWS (2.3a+): Rewrite the existing entry for the prologue
+	alternatives.
+	* doc/bison.texinfo (Prologue Alternatives): Update.
+	(Decl Summary): Update to %code "requires" and %code "provides".
+	(Calc++ Parser): Update to %code "requires".
+	(Table of Symbols): Remove entries for %requires, %provides, and
+	%code-top.  Rewrite %code entry, and add a %code "QUALIFIER" entry.
+	* data/bison.m4 (b4_user_provides, b4_user_requires): Remove as these
+	are replaced by b4_percent_code_provides and b4_percent_code_requires,
+	which are skeleton-specific.
+	(b4_check_percent_code_qualifiers): New.  A skeleton can use this to
+	declare what %code qualifiers it supports and to complain if any other
+	qualifiers were used in the grammar.
+	* data/glr.cc: Update to use b4_user_code([b4_percent_code_requires])
+	and b4_user_code([b4_percent_code_provides]) in place of
+	b4_user_requires and b4_user_provides.
+	* data/glr.c, data/lalr1.cc, data/push.c, data/yacc.c: Likewise.
+	Add b4_user_code([b4_percent_code_top]) and
+	b4_user_code([b4_percent_code]).
+	Invoke b4_check_percent_code_qualifiers.
+	* src/parse-gram.y (PERCENT_CODE_TOP, PERCENT_PROVIDES,
+	PERCENT_REQUIRES): Remove.
+	(grammar_declaration): Remove RHS's for %code-top, %provides, and
+	%requires.  Rewrite the %code RHS as the unqualified form defining the
+	muscle b4_percent_code.  Add another RHS for the qualified %code form,
+	which defines muscles of the form b4_percent_code_QUALIFIER and the
+	b4_used_percent_code_qualifiers muscle.
+	* src/scan-gram.l (PERCENT_CODE_TOP, PERCENT_PROVIDES,
+	PERCENT_REQUIRES): Remove.
+	* tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Update to use
+	%code "requires" and %code "provides".
+	* tests/input.at (Reject bad %code qualifiers): New.
+
+2007-01-03  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Use the new code_props interface for destructors and printers.
+	* src/symtab.h (symbol, semantic_type): Remove destructor_location and
+	printer_location members, and change the type of the destructor and
+	printer members to code_props.
+	(symbol_destructor_set, symbol_destructor_get, symbol_printer_set,
+	symbol_printer_get, semantic_type_destructor_set,
+	semantic_type_printer_set, default_tagged_destructor_set,
+	default_tagless_destructor_set, default_tagged_printer_set,
+	default_tagless_printer_set): Use code_props in arguments and return
+	types in place of char const * and location.
+	(symbol_destructor_location_get, symbol_printer_location_get): Remove
+	since the locations are now contained in the return of
+	symbol_destructor_get and symbol_printer_get.
+	* src/output.c (symbol_destructors_output, symbol_printers_output):
+	Replace with...
+	(symbol_code_props_output): ... this to eliminate duplicate code.
+	(output_skeleton): Update to use symbol_code_props_output.
+	* src/reader.c (symbol_should_be_used): Update use of
+	symbol_destructor_get.
+	* src/symlist.c (symbol_list_destructor_set, symbol_list_printer_set):
+	Update uses of the various _destructor_set and _printer_set functions.
+	* src/symtab.c: (default_tagged_destructor_location,
+	default_tagless_destructor_location, default_tagged_printer_location,
+	default_tagless_printer_location): Remove since we...
+	(default_tagged_destructor, default_tagless_destructor,
+	default_tagged_printer, default_tagless_printer): ... change the type
+	of these to code_props.
+	(symbol_new, semantic_type_new, symbol_destructor_set,
+	semantic_type_destructor_set, symbol_destructor_get,
+	symbol_printer_set, semantic_type_printer_set, symbol_printer_get,
+	symbol_check_alias_consistency, default_tagged_destructor_set,
+	default_tagless_destructor_set, default_tagged_printer_set,
+	default_tagless_printer_set): Update.
+	(symbol_destructor_location_get, symbol_printer_location_get): Remove.
+	(SYMBOL_CODE_PRINT): New similar to SYMBOL_ATTR_PRINT but for
+	code_props members.
+	(symbol_print): Use SYMBOL_CODE_PRINT.
+
+2007-01-03  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Use the new code_props interface for rule actions.
+	* src/symlist.h (symbol_list): Replace action, action_location, and
+	used members with a code_props action_props member.
+	* src/reader.c (symbol_should_be_used, grammar_rule_check,
+	grammar_midrule_action, grammar_current_rule_merge_set,
+	grammar_current_rule_symbol_append, packgram): Update.
+	* src/scan-code.h (translate_rule_action): Remove, no longer used.
+	* src/scan-code.l (handle_action_dollar): Update.
+	(translate_rule_action): Remove, no longer used.
+	* src/symlist.c (symbol_list_sym_new, symbol_list_syms_print): Update.
+
+2007-01-02  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Use the new code_props interface in parse-gram.y.
+	* src/parse-gram.y (prologue_declaration, braceless, epilogue.opt):
+	Update all uses of translate_* functions to use the new code_props
+	interface and to use gram_scanner_last_string_free and
+	code_scanner_last_string_free where possible.
+	(grammar_declaration): symbol_list_destructor_set and
+	symbol_list_printer_set now perform the translation, so don't do it
+	here.  Use gram_scanner_last_string_free where possible.
+	* src/scan-code.h, src/scan-code.l (translate_symbol_action,
+	translate_code): Remove, no longer used.
+	* src/symlist.h, src/symlist.c (symbol_list_destructor_set,
+	symbol_list_printer_set): Perform code translation here rather than
+	depending on the caller to do so.
+
+	* src/symlist.h (struct symbol_list): Correct some documentation typos.
+	* src/scan-gram.h (gram_last_string): Remove declaration.
+	* src/scan-gram.l (last_string): Declare it static.
+
+2007-01-02  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Encapsulate code properties and related functionality for the various
+	destructors, printers, and actions into a code_props structure and
+	interface.  This patch merely implements code_props in scan-code.h and
+	scan-code.l.  Future patches will rewrite other modules to use it.
+	Discussed starting at
+	<http://lists.gnu.org/archive/html/bison-patches/2006-11/msg00020.html>.
+	* src/location.h (EMPTY_LOCATION_INIT): Define so that it's easier to
+	consistently initialize const structs that have an empty location
+	field.
+	* src/location.c (empty_location): Initialize with EMPTY_LOCATION_INIT
+	to ensure consistency.
+	* src/scan-code.h (code_props): New structure.
+	(code_props_none_init, CODE_PROPS_NONE_INIT, code_props_none): New
+	function, macro, and const global variable for initializing a
+	code_props with no code.
+	(code_props_plain_init, code_props_symbol_action_init,
+	code_props_rule_action_init, code_props_translate_code): The rest of
+	the new code_props functional interface.  Among other things, the init
+	functions set the code_props kind field so that
+	code_props_translate_code will know whether to behave like
+	translate_symbol_action, translate_rule_action, or translate_code.
+	These old translate functions must remain until all other modules are
+	updated to use the new code_props interface.
+	(code_scanner_last_string_free): New function similar to
+	gram_scanner_last_string_free.
+	(code_scanner_free): Add documentation.
+	* src/scan-code.l: Implement the new interface.
+	(code_lex): Make it static, add a code_props* argument, and remove the
+	rule argument.
+	(last_string): New static global similar to the one in scan-gram.l.
+	(SC_RULE_ACTION): Update to use the code_props* argument to code_lex
+	instead of rule.
+	(SC_SYMBOL_ACTION): For $$, set the is_value_used member of the
+	code_props since Bison may one day use this information for destructors
+	and printers.
+	(<*><<EOF>>): Use STRING_FINISH so that last_string is set.
+	(handle_action_dollar): Use symbol_list_n_get and set used flag
+	directly since symbol_list_n_used_set is removed.
+	(translate_action): Add a code_props* argument and remove the rule,
+	action, and location arguments.  Pass the code_props* on to code_lex.
+	(translate_rule_action, translate_symbol_action, translate_code):
+	Rewrite as wrappers around the new code_props interface.
+	* src/symlist.h, src/symlist.c (symbol_list_n_used_set): Remove since
+	it would eventually need to break the encapsulation of code_props.
+
+2007-01-01  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* etc/.cvsignore: New.
+
+2007-01-01  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Add maintainer-push-check to run maintainer-check using push parsing in
+	place of pull parsing where available.
+	* Makefile.am (maintainer-push-check): New.
+	* data/bison.m4 (b4_use_push_for_pull_if): New.
+	* data/push.c: Redefine b4_push_if and b4_use_push_for_pull_if
+	appropriately based on their existing values.
+	(yypush_parse): Don't print push-parser-specific diagnostics if push
+	parsing is being used in place of pull parsing.
+	* data/yacc.c: If push parsing should replace pull parsing, redirect to
+	push.c.
+	* src/output.c (prepare): Check BISON_USE_PUSH_FOR_PULL environment
+	variable, and insert b4_use_push_for_pull_flag into muscles.
+	* tests/Makefile.am (maintainer-push-check): New.
+
+2006-12-31  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* data/push.c (yypush_parse): Set yynew = 1 at the end of a parse
+	(whether successful or failed) so that yypush_parse can be invoked
+	again to start a new parse using the same yypstate.
+	* tests/torture.at (AT_DATA_STACK_TORTURE): For push mode, extend to
+	check multiple yypull_parse invocations on the same yypstate.  For pull
+	mode, extend to check multiple yyparse invocations.
+	(Exploding the Stack Size with Alloca): Extend to try with
+	%push-pull-parser.
+	(Exploding the Stack Size with Malloc): Likewise.
+
+	* tests/calc.at (Simple LALR Calculator): Don't specify
+	%skeleton "push.c" since %push-pull-parser implies that now.
+	* tests/headers.at (export YYLTYPE): Don't check for the push
+	declarations.  Otherwise, this test case can't be used to see if push
+	mode can truly emulate pull mode.
+	* tests/input.at (Torturing the Scanner): Likewise.
+	* tests/local.at (AT_YACC_OR_PUSH_IF, AT_PUSH_IF): Remove.
+	(AT_YYERROR_SEES_LOC_IF): Rather than AT_YACC_OR_PUSH_IF, use
+	AT_YACC_IF, which now includes the case of push mode since %skeleton
+	need not be used for push mode.  This will be more intuitive once
+	push.c is renamed to yacc.c.
+
+2006-12-31  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	For push mode, convert yyparse from a macro to a function, invoke yylex
+	instead of passing a yylexp argument to yypull_parse, and don't
+	generate yypull_parse or yyparse unless %push-pull-parser is declared.
+	Discussed starting at
+	<http://lists.gnu.org/archive/html/bison-patches/2006-12/msg00163.html>.
+	* data/bison.m4 (b4_pull_if): New.
+	* data/c.m4 (b4_identification): Define YYPULL similar to YYPUSH.
+	* data/push.c: Improve M4 quoting a little.
+	(b4_generate_macro_args, b4_parenthesize): Remove.
+	(yyparse): If there's a b4_prefix, #define this to b4_prefix[parse]
+	any time a pull parser is requested.
+	Don't #define this as a wrapper around yypull_parse.  Instead, when
+	both push and pull are requested, make it a function that does that
+	same thing.
+	(yypull_parse): If there's a b4_prefix, #define this to
+	b4_prefix[pull_parse] when both push and pull are requested.
+	Don't define this as a function unless both push and pull are
+	requested.
+	Remove the yylexp argument and hard-code yylex invocation instead.
+	* etc/bench.pl.in (bench_grammar): Use %push-pull-parser instead of
+	%push-parser.
+	* src/getargs.c (pull_parser): New global initialized to true.
+	* getargs.h (pull_parser): extern it.
+	* src/output.c (prepare): Insert pull_flag muscle.
+	* src/parse-gram.y (PERCENT_PUSH_PULL_PARSER): New token.
+	(prologue_declaration): Set both push_parser and pull_parser = true for
+	%push-pull-parser.  Set push_parser = true and pull_parser = false for
+	%push-parser.
+	* src/scan-gram.l: Don't accept %push_parser as an alternative to
+	%push-parser since there's no backward-compatibility concern here.
+	Scan %push-pull-parser.
+	* tests/calc.at (Simple LALR(1) Calculator): Use %push-pull-parser
+	instead of %push-parser.
+	* tests/headers.at (export YYLTYPE): Make yylex static, and don't
+	prototype it in the module that calls yyparse.
+	* tests/input.at (Torturing the Scanner): Likewise.
+	* tests/local.at (AT_PUSH_IF): Check for %push-pull-parser as well.
+
+2006-12-26  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Update etc/bench.pl.  Optimize push mode a little (the yyn change
+	deserves most of the credit).
+	* Makefile.am (SUBDIRS): Add etc subdirectory.
+	* configure.ac (AC_CONFIG_FILES): Add etc/bench.pl and etc/Makefile.
+	* data/push.c (b4_declare_parser_state_variables): Move yyn, yyresult,
+	yytoken, yyval, and yyloc declarations to...
+	(yyparse or yypush_parse): ... here to improve performance.  For
+	yypush_parse invocations after the first, be sure to assign yyn its old
+	value again.
+	(yypstate_new): Don't bother initializing the yyresult field since the
+	initial value isn't used.
+	(yyn, yyresult, yytoken, yyval, yyloc): For each NAME in this list,
+	remove the #define that, in push mode, set it to yyps->NAME.
+	* etc/Makefile.am: New.
+	* etc/bench.pl: Remove and build it instead from...
+	* etc/bench.pl.in: ... this new file.  Use @abs_top_builddir@ to invoke
+	"tests/bison" from the build directory by default rather than just
+	invoking "bison" from $PATH.
+	(calc_grammar): Update push parser code: don't declare yylval globally,
+	don't define yyparse_wrapper, and don't #define yyparse.
+	(bench_grammar): Update to check all working combinations of yacc.c,
+	push.c, impure, pure, pull, and push.
+
+2006-12-25  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	For push mode, add pull wrappers around yypush_parse.
+	* data/push.c: (b4_generate_macro_args, b4_parenthesize): New macros.
+	(yypull_parse): New function wrapping yypush_parse.
+	(yyparse): New #define wrapping yypull_parse.
+	* tests/calc.at (_AT_DATA_CALC_Y): Call yyparse even when %push-parser
+	is declared.
+	* tests/headers.at (export YYLTYPE): Make yylex global.  For push mode,
+	prototype yylex in the module that calls yyparse, and don't prototype
+	yyparse there.  Otherwise, the yyparse expansion won't compile.
+	* tests/input.at (Torturing the Scanner): Likewise.
+
+2006-12-25  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Enable push parsers to operate in impure mode.  Thus, %push-parser no
+	longer implies %pure-parser.  The point of this change is to move
+	towards being able to test the push parser code by running the entire
+	test suite as if %push-parser had been declared.
+	* data/push.c (yypush_parse): For impure mode, remove the
+	yypushed_char, yypushed_val, and yypushed_loc arguments.
+	Instead, declare these as local variables initialized to the global
+	yychar, yylval, and yylloc.
+	For the first yypush_parse invocation only, restore the initial values
+	of these global variables when it's time to read a token since they
+	have been overwritten.
+	* src/parse-gram.y (prologue_declaration): Don't set pure_parser for
+	%push-parser.
+	* tests/calc.at (Simple LALR(1) Calculator): Always declare
+	%pure-parser along with %push-parser since this test case was designed
+	for pure push parsers.
+	* tests/local.at (AT_PURE_OR_PUSH_IF): Remove unused.
+	(AT_YACC_OR_PUSH_IF): New.
+	(AT_YYERROR_SEES_LOC_IF): Fix enough that the test suite passes, but
+	add a note that it's still wrong for some cases (as it has been for a
+	while).
+	(AT_PURE_LEX_IF): Use AT_PURE_IF instead of AT_PURE_OR_PUSH_IF since
+	%push-parser no longer implies %pure-parser.
+
+2006-12-20  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Remove some unnecessary differences between the pull parser code and
+	the push parser code.  This patch enables yynerrs in push mode.
+	* data/push.c: Reformat M4 a little.
+	(b4_yyerror_range): Remove and convert all uses to just yyerror_range.
+	(b4_declare_scanner_communication_variables): Don't omit yynerrs just
+	because push mode is on.  Instead, if pure mode is on, move yynerrs
+	to...
+	(b4_declare_parser_state_variables): ... here.
+	(yynerrs, yyerror_range): For push mode, #define each NAME in this list
+	to yyps->NAME so it can be used in yypush_parse.
+	(yypush_parse): Don't omit uses of yynerrs in push mode.
+
+2006-12-20  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Fix bug such that the first pushed token's value and location are
+	sometimes overwritten (sometimes by %initial-action) before being used.
+	* data/push.c (yypush_parse): Rename arguments yynchar, yynlval, and
+	yynlloc to yypushed_char, yypushed_val, and yypushed_loc for clarity.
+	For the first yypush_parse invocation, initialize yychar to YYEMPTY to
+	more closely mimic the pull parser logic.
+	Don't copy the pushed token to yychar, yylval, and yylloc until it's
+	time to read a token, which is after any initialization of yylval and
+	yylloc.
+	(gottoken): Rename label to...
+	(yyread_pushed_token): ... for clarity and to avoid infringing on the
+	user namespace.
+
+2006-12-20  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Rearrange initialization of the parser state variables so that the
+	skeleton doesn't have to have a copy for pull mode and another for push
+	mode.  This patch also fixes at least a bug such that yylloc was not
+	initialized (with b4_location_initial_line and
+	b4_location_initial_column) upon calling yypush_parse.  However, that
+	initialization now overwrites the first token's location;
+	%initial-action assigning @$ already did the same thing, and both bugs
+	will be fixed in a later patch.
+	* data/push.c (b4_yyssa): Remove and convert all uses to just yyssa.
+	(b4_declare_parser_state_variables): Remove initialization of yytoken,
+	yyss, yyvs, yyls, and yystacksize.
+	(yypstate_new): Remove initialization of some yypstate fields: yystate,
+	yyerrstatus, yytoken, yyss, yyvs, yyls, yystacksize, yyssp, yyvsp, and
+	yylsp.
+	(yyssa, yyvsa, yylsa): For push mode, #define each NAME in this list to
+	yyps->NAME so it can be used in yypush_parse.
+	(yyparse or yypush_parse): For yypush_parse, don't print the
+	"Starting parse" diagnostic for invocations after the first.
+	Add initialization of yytoken, yyss, yyvs, yyls, and yystacksize; for
+	yypush_parse, only do it for the first invocation.
+	Allow yystate, yyerrstatus, yyssp, yyvsp, yylsp, and yylloc
+	initialization to occur in yypush_parse but only on the first
+	invocation.
+
+2006-12-19  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* data/push.c: Add CPP guards around push parser declarations in both
+	the header and the code file.
+	In the code file, move the push parser declarations to the same place
+	they appear in the header file.
+	Clean up the M4 some, especially the inconsistent underquoting in
+	some b4_c_function_def and b4_c_function_decl uses.
+
+2006-12-19  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Encapsulate the push parser state variables into an M4 macro so the
+	push skeleton doesn't have to list them again for pull mode's yyparse.
+	For push mode, remove yypush_parse's local equivalents of these
+	variables to eliminate unnecessary copying between the two sets at
+	run-time.  This patch also fixes at least a bug related to multiple
+	%initial-action invocations in push mode.
+	* data/push.c (b4_declare_parser_variables): Rename to...
+	(b4_declare_scanner_communication_variables): ... this for clarity and
+	update both uses.
+	(b4_declare_yyparse_variables): Remove and move its contents to the one
+	spot where it was invoked.
+	(b4_declare_parser_state_variables): New macro containing the parser
+	state variables required by push mode.
+	(struct yypstate): Replace all fields but yynew with
+	b4_declare_parser_state_variables.
+	(yystate, yyn, yyresult, yyerrstatus, yytoken, yyss, yyssp, yyvs,
+	yyvsp, yyls, yylsp, yystacksize, yyval, yyloc): For push mode, #define
+	each NAME in this list to yyps->NAME so it can be used in yypush_parse.
+	(yyparse or yypush_parse): For yyparse in pull mode, replace local
+	parser state variable declarations with
+	b4_declare_parser_state_variables.
+	Don't initialize parser state variables when calling yypush_parse since
+	yypstate_new already does that.
+	Invoke the user's initial action only upon the first yypush_parse
+	invocation.
+	Remove all code that copies between the local parser state variables
+	and the yypstate.
+
+2006-12-19  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* data/push.c (union yyalloc): Rename yyss, yyvs, and yyls fields to
+	prevent a name collision in a future patch where these names will
+	sometimes be #define'd.
+	(YYSTACK_RELOCATE): Add an argument to select a union yyalloc field
+	since it no longer has the same name as the existing argument.
+	(yyparse or yypush_parse): Update all uses of YYSTACK_RELOCATE.
+
+2006-12-19  Paolo Bonzini  <bonzini@gnu.org>
+	and Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* doc/bison.texinfo (Decl Summary): In the %language entry, mention
+	that the argument is case-insensitive, and there's no `=' here.
+	For the %skeleton entry, mention that %language is better.
+	(Bison Options): Likewise for --language and --skeleton.  Move the
+	--skeleton entry so that the `Tuning the parser' section is sorted
+	alphabetically on long options.
+	(C++ Bison Interface): Don't use the word skeleton.  Don't explain the
+	%language directive in detail here; cross-reference the %language
+	documentation instead.
+	(Calc++ Parser): Use `%require "@value{VERSION}"' rather than
+	`%require "2.3b"' so that the example is always up-to-date.
+	(Table of Symbols): Add entries for %language and %skeleton.
+	* examples/extexi (normalize): Instead of replacing every %require
+	argument with the current Bison version, just substitute for
+	`@value{VERSION}'.  This guarantees that we're testing what actually
+	appears in the documentation.
+	* examples/calc++/Makefile.am ($(calc_extracted)): Use `$(VERSION)'
+	rather than `@VERSION@'.
+
+2006-12-18  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* NEWS: Reword the %language news a bit, and put it earlier.
+
+	* src/getargs.c (skeleton_arg): Last arg is now location const *.
+	Rewrite to simplify the logic.
+	(language_argmatch): Likewise.
+	(program_name): We now own this var.
+	* src/getargs.h (struct bison_language): Use char[] rather than
+	const char *.
+
+	* doc/bison.texinfo (Decl Summary, Bison Options): Don't claim
+	Java is supported.
+	* src/complain.c (program_name): Remove decl; no longer needed.
+	* src/main.c (program_name): Remove; now belongs to getargs.
+
+2006-12-18  Paolo Bonzini  <bonzini@gnu.org>
+
+	* NEWS: Document %language.
+
+	* data/Makefile.am (dist_pkgdata_DATA): Add c-skel.m4, c++-skel.m4.
+
+	* data/c-skel.m4, data/c++-skel.m4: New files.
+	* data/glr.c: Complain on push parsers.
+
+	* doc/bison.texinfo (C++ Parser Interface): Prefer %language
+	over %skeleton.
+	(Decl Summary): Document %language and %skeleton.
+	(Command line): Document -L.
+
+	* examples/extexi: Rewrite %require directive.
+	* examples/calc++/Makefile.am: Pass VERSION to extexi.
+
+	* src/files.c (compute_exts_from_gc): Look in language structure
+	for .y extension.
+	(compute_file_name_parts): Check whether .tab should be added.
+	* src/getargs.c (valid_languages, skeleton_prio, language_prio):
+	(language, skeleton_arg, language_argmatch): New.
+	(long_options): Add --language.
+	(getargs): Use skeleton_arg, add -L/--language.
+	* src/getargs.h: Include location.h.
+	(struct bison_language, language, skeleton_arg, language_argmatch): New.
+	* src/output.c (prepare): Pick default skeleton from struct language.
+	Don't dispatch C skeletons here.
+	* src/parse-gram.y (PERCENT_LANGUAGE): New.
+	(prologue_declaration): Add "%language" rule, use skeleton_arg.
+	* src/scan-gram.l ("%language"): New rule.
+
+	* tests/calc.at: Test %skeleton and %language.
+	* tests/local.at (AT_SKEL_CC_IF): Look for %language.
+	(AT_GLR_IF): Look for %skeleton "glr.cc".
+	(AT_LALR1_CC_IF, AT_GLR_CC_IF): Rewrite.
+	(AT_YACC_IF): Reject %language.
+
+2006-12-18  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* src/symtab.h (struct semantic_type): Remove the tag 'semantic_type',
+	since it wasn't used; only the typedef name 'semantic_type' is needed.
+	Also, omit trailing white space.
+
+	* bootstrap: Sync from coreutils.
+	(gnulib_extra_files): Add build-aux/announce.gen.
+	(slurp): Adjust .gitignore files like .cvsignore files.
+	* build-aux/announce-gen: Remove from CVS, since bootstrap
+	now creates this.
+
+2006-12-16  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Make %push-parser imply %pure-parser.  This fixes several bugs; see
+	<http://lists.gnu.org/archive/html/bison-patches/2006-12/msg00148.html>.
+	* src/parse-gram.y (prologue_declaration): For %push-parser, also set
+	pure_parser = true.
+	* data/push.c: Don't bother testing b4_push_if when deciding whether
+	to expand b4_declare_parser_variables globally.
+	(yypush_parse): Likewise in here.
+
+	* data/push.c (yypush_parse): Add b4_parse_param to arguments.
+	(yy_reduce_print): Reformat M4 for readability.
+
+2006-12-15  Bob Rossi  <bob@brasko.net>
+	and Joel Denny  <jdenny@ces.clemson.edu>
+
+	* data/push.c (yypstate): Add typedef, and update all uses of
+	struct yypstate to just yypstate.
+	* tests/calc.at (_AT_DATA_CALC_Y): Update here as well.
+
+2006-12-14  Bob Rossi  <bob@brasko.net>
+
+	* data/push.c (yypush_parse): Declare prototype regardless of
+	%locations option.
+
+2006-12-14  Bob Rossi  <bob@brasko.net>
+
+	* data/push.c (yyparse): Remove the prototype and the #define when in
+	push-parser mode.
+
+2006-12-13  Bob Rossi  <bob@brasko.net>
+
+	* data/push.c (yypstate_init): Rename to...
+	(yypstate_new): ... this and use b4_c_function_def.
+	(yypstate_delete): New.
+	(yypush_parse): Change parameters yynval and yynlloc to be const.
+	* tests/calc.at (_AT_DATA_CALC_Y): Use new yypstate_new and
+	yypstate_delete functions.
+
+2006-12-13  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* configure.ac (AC_PREREQ): Require Autoconf 2.61 because of our
+	strange test case titles.  Reported by Bob Rossi.
+
+2006-12-13  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* TODO: Add pointer to Sylvain Schmitz's work on static detection
+	of potential ambiguities in GLR grammers.
+
+2006-12-12  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* tests/testsuite.at (AT_CHECK): When checking if $1 starts with
+	`bison ', use m4_index instead of m4_substr since chopping up a string
+	containing M4-special characters causes problems here.
+
+	Fix a couple of bugs related to special characters in user-specified
+	file names, and make it easier for skeletons to compute output file
+	names with the same file name prefix as Bison-computed output file
+	names.
+	* data/glr.cc, data/push.c, data/yacc.c: In @output, use
+	b4_parser_file_name and b4_spec_defines_file instead of
+	@output_parser_name@ and @output_header_name@, which are now redundant.
+	* data/glr.c, data/lalr1.cc: Likewise.  Also, in header #include's, use
+	b4_parser_file_name, b4_spec_defines_file, and the new
+	@basename(FILENAME@) instead of @output_parser_name@ and
+	@output_header_name@, which inappropriately escaped the file names as
+	C string literals.
+	* src/files.c (all_but_ext): Remove static qualifier.
+	(compute_output_file_names): Move `free (all_but_ext)' to...
+	(output_file_names_free): ... here since all_but_ext is needed later.
+	* src/files.h (all_but_ext): Extern.
+	* src/muscle_tab.h (MUSCLE_INSERT_STRING_RAW): New macro that does
+	exactly what MUSCLE_INSERT_STRING used to do.
+	(MUSCLE_INSERT_STRING): Use MUSCLE_OBSTACK_SGROW so that M4-special
+	characters are escaped properly.
+	* src/output.c (prepare): Define muscle file_name_all_but_ext as
+	all_but_ext.
+	For pkgdatadir muscle, maintain previous functionality by using
+	MUSCLE_INSERT_STRING_RAW instead of MUSCLE_INSERT_STRING.  The problem
+	is that b4_pkgdatadir is used inside m4_include in the skeletons, so
+	digraphs would never be expanded.  Hopefully no one has M4-special
+	characters in his Bison installation path.
+	* src/scan-skel.l: Don't parse @output_header_name@ and
+	@output_parser_name@ anymore since they're now redundant.
+	In @output, use decode_at_digraphs.
+	Parse a new @basename command that invokes last_component.
+	(decode_at_digraphs): New.
+	(BASE_QPUTS): Remove unused.
+	* tests/output.at (AT_CHECK_OUTPUT_FILE_NAME): New macro.
+	(Output file name): New tests.
+
+2006-12-09  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Warn about output files that are generated by the skeletons and that
+	conflict with other output files.
+	* data/glr.c: Don't generate the header file here when glr.cc does.
+	* src/files.c (file_names, file_names_count): New static globals.
+	(compute_output_file_names): Invoke output_file_name_check for files
+	not generated by the skeletons and remove existing checks.
+	(output_file_name_check): New function that warns about conflicting
+	output file names.
+	(output_file_names_free): Free file_names.
+	* src/files.h (output_file_name_check): Declare.
+	* src/scan-skel.l: Invoke output_file_name_check for files generated by
+	the skeletons.
+	* tests/output.at (AT_CHECK_CONFLICTING_OUTPUT): New.
+	(Conflicting output files): New tests.
+
+2006-12-09  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>
+
+	* doc/bison.texinfo: Fix a couple of typos.
+
+2006-12-08  Bob Rossi  <bob@brasko.net>
+
+	* data/push.c: (yypvarsinit, yypvars, struct yypvars, yypushparse):
+	Rename to...
+	(yypstate_init, yypstate, struct yypstate, yypush_parse): ... these and
+	update all uses.
+	(b4_yyssa, b4_yyerror_range, yypstate_init): Rename pv to yyps.
+	(yypush_parse): Rename yypvars argument to yyps and remove redundant
+	local pv.
+	(yypstate_init, yypush_parse): Declare in Bison-generated header file.
+	* tests/calc.at (_AT_DATA_CALC_Y): Use newly named functions.
+
+2006-12-07  Bob Rossi  <bob@brasko.net>
+	and Joel Denny  <jdenny@ces.clemson.edu>
+
+	* data/push.c (yypvarsinit): Change return type from void* to struct
+	yypvars*. No longer cast to void* on return.
+	(struct yypvars): Remove yylen since it need not be remembered between
+	yypushparse invocations.
+	(yypushparse): Don't copy between yylen and pv->yylen.
+
+2006-12-05  Bob Rossi  <bob@brasko.net>
+
+	* data/push.c (yychar_set, yylval_set, yylloc_set): Delete.
+	(yypushparse): Add yynchar, yynlval, yynlloc parameters.
+	(b4_declare_parser_variables): Do not declare yynerrs for push mode.
+	(struct yypvars): Remove b4_declare_parser_variables.
+	(yypvarsinit): Remove init code for removed variables.
+	(global scope): Do not declare b4_declare_parser_variables if
+	push or pure mode.
+	(yypushparse): Add b4_declare_parser_variables.
+	Init new local variables, and remove init code for removed
+	yypvars variables.
+	(yyparse): Delete.
+	* tests/calc.at (_AT_DATA_CALC_Y): Call yypushparse for push mode
+	and yyparse for other modes.
+	(AT_CHECK_CALC_LALR): Added '%skeleton "push.c"' for push tests.
+	* tests/local.at (AT_PUSH_IF, AT_PURE_OR_PUSH_IF): Added.
+	(AT_YYERROR_SEES_LOC_IF): push-parser makes this false.
+	(AT_PURE_LEX_IF): True if pure or push parser.
+
+2006-12-05  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Document Yacc prologue alternatives and default %destructor's and
+	%printer's as experimental.  Don't mention Java yet.  Discussed at
+	<http://lists.gnu.org/archive/html/bison-patches/2006-12/msg00002.html>.
+	* NEWS (2.3a+): Say they're experimental.  Remove any mention of Java.
+	(2.3a): Annotate this entry to say the old forms of these features were
+	also experimental.
+	* doc/bison.texinfo (Prologue Alternatives, Freeing Discarded Symbols,
+	Table of Symbols): Say they're experimental.  Comment out any mention
+	of Java (we'll want this back eventually).
+
+2006-12-01  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Support a file name argument to %defines.  Deprecate `=' in
+	%file-prefix, %name-prefix, and %output.  Discussed at
+	<http://lists.gnu.org/archive/html/help-bison/2006-09/msg00001.html>.
+	* NEWS (2.3a+): Mention.
+	* doc/bison.texinfo (Decl Summary, Table of Symbols): Add entry for new
+	form of %defines, and remove `=' from entries for %file-prefix,
+	%name-prefix, and %output.
+	* src/parse-gram.y (prologue_declaration): Implement.
+	* tests/calc.at (Simple LALR Calculator, Simple GLR Calculator, Simple
+	LALR1 C++ Calculator, Simple GLR C++ Calculator): Remove the `=' from
+	all but one occurrence of %name-prefix.
+	* tests/headers.at (export YYLTYPE): Remove the `=' from %name-prefix.
+	* tests/local.at (_AT_BISON_OPTION_PUSHDEFS): Likewise.
+	* tests/output.at (AT_CHECK_OUTPUT): Remove the `=' from all but one
+	occurrence of each of %file-prefix and %output.  Add check for %defines
+	with argument.
+	* tests/reduce.at (Useless Terminals, Useless Nonterminals,
+	Useless Rules, Reduced Automaton, Underivable Rules, Empty Language):
+	Remove the `=' from %output.
+
+2006-11-21  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Don't escape $ in test case titles since Autoconf 2.61 now does that
+	correctly.
+	* tests/actions.at (Default %printer and %destructor are not for error
+	or $undefined): Here.
+	(Default %printer and %destructor are not for $accept): Here.
+	* tests/input.at (Invalid $n and @n): Here.
+
+2006-11-20  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Rename <!> to <>.  Discussed starting at
+	<http://lists.gnu.org/archive/html/bison-patches/2006-11/msg00039.html>.
+	* NEWS (2.3a+): Update.
+	* doc/bison.texinfo (Freeing Discarded Symbols, Table of Symbols):
+	Update.
+	* src/parse-gram.y (TYPE_TAG_NONE, generic_symlist_item): Implement.
+	* src/scan-gram.l (INITIAL): Implement.
+	* src/symlist.c (symbol_list_default_tagless_new): Update comment.
+	* src/symlist.h (symbol_list, symbol_list_default_tagless_new): Update
+	comment.
+	* tests/actions.at (Default tagless %printer and %destructor,
+	Default tagged and per-type %printer and %destructor,
+	Default %printer and %destructor are not for error or $undefined,
+	Default %printer and %destructor are not for $accept,
+	Default %printer and %destructor for mid-rule values): Update.
+	* tests/input.at (Default %printer and %destructor redeclared,
+	Unused values with default %destructor): Update.
+
+2006-11-17  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Don't let %prec take a nonterminal.
+	* src/reader.c (grammar_current_rule_prec_set): Make the %prec symbol a
+	token.
+	* tests/input.at (%prec takes a token): New test checking that %prec
+	won't take a nonterminal.
+
+2006-11-10  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* tests/testsuite.at (AT_CHECK): Don't miss an exit value of 0 because
+	it was double-quoted.
+	* src/Makefile.am (YACC): Use --warnings=all,error so that Bison's own
+	grammar is maintained with Bison's highest standards.
+	* src/getargs.c: Fix some typos in Doxygen comments.
+
+2006-11-10  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Fix memory leaks in scanners generated by at least Flex 2.5.9 and
+	later.  Reported by Paul Eggert in
+	<http://lists.gnu.org/archive/html/bison-patches/2006-11/msg00014.html>.
+	* src/flex-scanner.h (yylex_destroy): Define for Flex before 2.5.9.
+	* src/scan-code.l (translate_action): Don't bother invoking
+	yy_delete_buffer (YY_CURRENT_BUFFER) before creating the first buffer.
+	(code_scanner_free): Instead of invoking
+	yy_delete_buffer (YY_CURRENT_BUFFER) directly, invoke yylex_destroy,
+	which frees more.
+	* src/scan-gram.l (gram_scanner_free): Likewise.
+	* src/scan-skel.l (scan_skel): Likewise.
+
+2006-11-09  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* src/files.c (tr): Change return type to void.
+	* src/muscle_tab.c (muscle_insert): Free storage in case muscle_grow
+	has been called previously for the same key.
+	(muscle_find): Return storage instead of value so that
+	--enable-gcc-warnings doesn't produce warnings that the return discards
+	const.  aver that the value and storage are the same since storage
+	could potentially be NULL when value is not.
+	* tests/testsuite.at (AT_CHECK): Treat an unspecified exit value the
+	same as 0.
+
+2006-11-08  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* bootstrap.conf (excluded_files): Exclude m4/codeset.m4 (undoing
+	the earlier change today), m4/intl.m4, m4/intldir.m4.  This gives
+	us a slightly cleaner distribution, and also works.
+	* m4/.cvsignore: Add inline.m4, wint_t.m4 to accommodate recent
+	gnulib changes.
+
+2006-11-08  Joel E. Denny  <jdenny@ces.clemson.edu>
+	and Paul Eggert  <eggert@cs.ucla.edu>
+
+	Don't let Bison leak memory except when it complains.
+	* src/files.h (parser_file_name, spec_verbose_file, spec_graph_file):
+	(spec_defines_file, dir_prefix): Now char *, not const char *,
+	since they are freed.
+	* src/files.c: Likewise.
+	(all_but_ext, all_but_tab_ext, src_extension, header_extension):
+	Likewise.
+	(tr): Now operates in-place.  All uses changed.
+	(compute_exts_from_gf, compute_exts_from_src): Don't leak temporary
+	values.
+	(compute_file_name_parts, compute_output_file_names): Don't store
+	read-only data in variables that will be freed.
+	(compute_output_file_names): Free all_but_ext, all_but_tab_ext,
+	src_extension, and header_extension.
+	(output_file_names_free): New public function to free
+	spec_verbose_file, spec_graph_file, spec_defines_file,
+	parser_file_name, and dir_prefix.
+	* src/getargs.c (getargs): Don't store read-only data in variables that
+	will be freed.
+	* src/main.c (main): Invoke output_file_names_free, code_scanner_free
+	(which previously existed but was unused), and quotearg_free.
+	* src/muscle_tab.h (muscle_insert): value arg is now a `char const *'.
+	* src/muscle_tab.c: Likewise.
+	(muscle_entry): Make the value char const *,
+	and add a new storage member that is char * and can be freed.
+	(muscle_entry_free): New private function.
+	(muscle_init): Use it instead of free.
+	(muscle_insert, muscle_grow): Update and use new storage member.
+	(muscle_code_grow): Free the string passed to muscle_grow
+	since it's not needed anymore.
+	* src/parse-gram.y (%union): Make `chars' member a `char const *', and
+	add a new `char *code' member.
+	("{...}"): Declare semantic type as code.
+	* src/scan-code.h (translate_rule_action):
+	(translate_symbol_action, translate_code, translate_action): Return
+	`char const *' rather than `char *' since external code should not free
+	these strings.
+	* src/scan-code.l: Likewise.
+	* src/scan-gram.l (<SC_BRACED_CODE>): Use val->code for BRACED_CODE,
+	which is "{...}" in the parser.
+	* tests/Makefile.am (maintainer-check-valgrind): Set
+	VALGRIND_OPTS='--leak-check=full --show-reacheable=yes' before invoking
+	Valgrind.
+	* tests/calc.at (_AT_DATA_CALC_Y): fclose the FILE* so Valgrind doesn't
+	complain.
+	* tests/testsuite.at (AT_CHECK): Redefine so that running Bison and
+	expecting a non-zero exit status sets --leak-check=summary and
+	--show-reachable=no for Valgrind.  Bison unabashedly leaks memory in
+	this case, and we don't want to hear about it.
+
+2006-11-08  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* bootstrap (runtime-po/Makevars): Derive from po/Makevars
+	instead of from the template, to simplify configuration a bit.
+	* bootstrap.conf (excluded_files): Don't exclude m4/codeset.m4
+	and m4/wint_t.m4, as they are needed with the latest gnulib.
+
+2006-10-31  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Disable unset/unused mid-rule value warnings by default, and recognize
+	--warnings=midrule-values to enable them.  Discussed starting at
+	<http://lists.gnu.org/archive/html/help-bison/2006-10/msg00030.html>.
+	* NEWS (2.3a+): Mention.
+	* src/getargs.c, src/getargs.h (warnings_args, warnings_types, enum
+	warnings): Add entry for midrule-values subargument.
+	* src/reader.c (symbol_should_be_used): Don't return true just because
+	the value is a set/used mid-rule value unless
+	--warnings=midrule-values was specified.
+	* tests/input.at (Unused values, Unused values before symbol
+	declarations): Run tests with and without --warnings=midrule-values.
+
+	* src/reader.c (check_and_convert_grammar): Use symbol_list_free rather
+	than LIST_FREE directly.
+
+2006-10-31  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Finish implementing --warnings=error, which should not be implied by
+	--warnings=all (or by its synonyms -W and --warnings without
+	subarguments).
+	* src/complain.c (set_warning_issued): New function to report that
+	warnings are being treated as errors and to record an error if so.
+	Invoke...
+	(warn_at, warn): ... here.
+	* src/getargs.c (warnings_args, warnings_types): Reorder so that
+	"error - warnings are errors" does not appear above "all - all of the
+	above".
+	(getargs): For -W and --warnings without subarguments, don't let
+	FLAGS_ARGMATCH set warnings_error in warnings_flag.
+	* src/getargs.h (enum warnings): Unset warnings_error in warnings_all.
+
+2006-10-31  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* src/getargs.c (flags_argmatch): Don't cause segmentation fault for
+	empty subargument list.  For example: `bison  --warnings=  parser.y'.
+
+2006-10-21  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* data/push.c, data/yacc.c: Make sure there's a newline at the end of
+	the parser header file so that gcc doesn't warn.
+
+2006-10-21  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Split the default %destructor/%printer into two kinds: <*> and <!>.
+	Discussed starting at
+	<http://lists.gnu.org/archive/html/bison-patches/2006-09/msg00060.html>.
+	* NEWS (2.3a+): Mention.
+	* doc/bison.texinfo (Freeing Discarded Symbols): Document this and the
+	previous change today related to mid-rules.
+	(Table of Symbols): Remove %symbol-default and add <*> and <!>.
+	* src/parse-gram.y (PERCENT_SYMBOL_DEFAULT): Remove.
+	(TYPE_TAG_ANY): Add as <*>.
+	(TYPE_TAG_NONE): Add as <!>.
+	(generic_symlist_item): Remove RHS for %symbol-default and add RHS's
+	for <*> and <!>.
+	* src/scan-gram.l (PERCENT_SYMBOL_DEFAULT): Remove.
+	(TYPE_TAG_ANY, TYPE_TAG_NONE): Add.
+	* src/symlist.c (symbol_list_default_new): Split into tagged and
+	tagless versions.
+	(symbol_list_destructor_set, symbol_list_printer_set): Split
+	SYMLIST_DEFAULT case into SYMLIST_DEFAULT_TAGGED and
+	SYMLIST_DEFAULT_TAGLESS.
+	* src/symlist.h: Update symbol_list_default*_new prototypes.
+	(symbol_list.content_type): Split enum value SYMLIST_DEFAULT into
+	SYMLIST_DEFAULT_TAGGED and SYMLIST_DEFAULT_TAGLESS.
+	* src/symtab.c (default_destructor, default_destructor_location,
+	default_printer, default_printer_location): Split each into tagged and
+	tagless versions.
+	(symbol_destructor_get, symbol_destructor_location_get,
+	symbol_printer_get, symbol_printer_location_get): Implement tagged
+	default and tagless default cases.
+	(default_destructor_set, default_printer_set): Split each into tagged
+	and tagless versions.
+	* src/symtab.h: Update prototypes.
+	* tests/actions.at (Default %printer and %destructor): Rename to...
+	(Default tagless %printer and %destructor): ... this, and extend.
+	(Per-type %printer and %destructor): Rename to...
+	(Default tagged and per-type %printer and %destructor): ... this, and
+	extend.
+	(Default %printer and %destructor for user-defined end token): Extend.
+	(Default %printer and %destructor are not for error or $undefined):
+	Update.
+	(Default %printer and %destructor are not for $accept): Update.
+	(Default %printer and %destructor for mid-rule values): Extend.
+	* tests/input.at (Default %printer and %destructor redeclared): Extend.
+	(Unused values with default %destructor): Extend.
+
+2006-10-21  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Don't apply the default %destructor/%printer to an unreferenced midrule
+	value.  Mentioned at
+	<http://lists.gnu.org/archive/html/bison-patches/2006-09/msg00104.html>.
+	* src/symtab.c (dummy_symbol_get): Name all dummy symbols initially
+	like $@n instead of just @n so that the default %destructor/%printer
+	logic doesn't see them as user-defined symbols.
+	(symbol_is_dummy): Check for both forms of the name.
+	* src/reader.c (packgram): Remove the `$' from each midrule symbol
+	name for which the midrule value is referenced in any action.
+	* tests/actions.at (Default %printer and %destructor for mid-rule
+	values): New test.
+	* tests/regression.at (Rule Line Numbers, Web2c Report): Update output
+	for change to dummy symbol names.
+
+2006-10-20  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Warn about unset midrule $$ if the corresponding $n is used.
+	* src/reader.c (symbol_should_be_used): Check midrule parent rule for
+	$n usage.
+	(packgram): Before invoking grammar_rule_check on any rule, make sure
+	all actions have already been scanned in order to set `used' flags.
+	Otherwise, checking that a midrule's $$ is set will not always work
+	properly because the midrule check must forward-reference the midrule's
+	parent rule.
+	* tests/input.at (AT_CHECK_UNUSED_VALUES): Extend to check the new
+	warning.
+
+2006-10-20  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	More improvements to the documentation of the prologue alternatives:
+	* NEWS (2.3a+): Mention the new `Prologue Alternatives' section in the
+	Bison manual.
+	* doc/bison.texinfo (Prologue Alternatives): Correct some errors.  Add
+	some text to clarify the relative importance of the new directives and
+	to show how these directives may be viewed as code labels.
+
+2006-10-16  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Similar to the recently removed %before-header, add %code-top as the
+	alternative to the pre-prologue.  Mentioned at
+	<http://lists.gnu.org/archive/html/bison-patches/2006-10/msg00063.html>.
+	Also, let the prologue alternatives appear in the grammar section.
+	* src/parse-gram.y (PERCENT_CODE_TOP): New token.
+	(prologue_declaration): Move the existing prologue alternatives to...
+	(grammar_declaration): ... here and add %code-top.
+	* src/scan-gram.l (PERCENT_CODE_TOP): New token.
+
+	Clean up and extend documentation for the prologue alternatives.
+	* NEWS (2.3a+): Describe prologue alternatives.
+	* doc/bison.texinfo (Prologue): Move discussion of prologue
+	alternatives to...
+	(Prologue Alternatives): ... this new section, and extend it to discuss
+	all 4 directives in detail.
+	(Table of Symbols): Clean up discussion of prologue alternatives and
+	add %code-top.
+
+2006-10-16  Juan Manuel Guerrero  <juan.guerrero@gmx.de>
+
+	DJGPP specific issues.
+
+	* djgpp/config.bat: config.hin has been moved to lib. Adjust
+	config.bat accordingly.
+	* djgpp/config.sed: Adjust config.sed for the use of autoconf 2.60.
+	* djgpp/config.site: Likewise.
+
+2006-10-16  Paolo Bonzini  <bonzini@gnu.org>
+
+	Replace %*-header with %provides, %requires, %code.  See discussion at
+	http://lists.gnu.org/archive/html/bison-patches/2006-10/msg00002.html
+
+	* data/bison.m4 (b4_user_requires, b4_user_provides): New.
+	(b4_user_start_header): Remove.
+	* data/glr.c: Use new macros instead of b4_*start_header
+	and b4_*end_header.
+	* data/glr.cc: Likewise.
+	* data/lalr1.cc: Likewise.
+	* data/push.c: Likewise.
+	* data/yacc.c: Likewise.
+
+	* doc/bison.texinfo: Remove %before-header, rename
+	%{start,end,after}-header to %requires, %provides, %code.
+
+	* src/parse-gram.y: Likewise (also rename token names accordingly).
+	* src/scan-gram.l: Likewise.
+	* tests/actions.at: Likewise.
+
+2006-10-14  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* lib/Makefile.am (AM_CFLAGS): Remove $(WERROR_CFLAGS).
+	Problem reported by Joel E. Denny.
+
+2006-10-14  Jim Meyering  <jim@meyering.net>
+
+	(Sync from coreutils.)
+	Work also when the working directory (with e.g. coreutils sources)
+	is version controlled with git, rather than CVS.
+	* bootstrap (CVS_only_file): Test for the existence of README-cvs,
+	rather than CVS.
+	In messages and comments, say e.g., "checked-out sources",
+	rather than "CVS sources".
+	(version_controlled_file): New function.  Work for git as well as
+	for CVS.  Don't use grep's -q option.
+	(slurp): Call it here, in place of CVS-specific code.
+
+2006-10-14  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Fix testsuite for ./configure --enable-gcc-warnings:
+	* configure.ac (gcc-warnings): Move -Wall before -Wno-sign-compare.
+	Otherwise, gcc 4.1.0 (at least) warns about sign comparisons in
+	__AT_CHECK_PRINTER_AND_DESTRUCTOR in tests/actions.at.
+	* test/input.at (Torturing the Scanner): #include <stdlib.h> for abort.
+	* test/regression.at (Diagnostic that expects two alternatives):
+	Likewise.
+
+2006-10-12  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* bootstrap.conf (gnulib_modules): Add config-h.
+	* djgpp/subpipe.c: Include <config.h> unconditionally; don't
+	worry about HAVE_CONFIG_H.
+	* lib/abitset.c: Likewise.
+	* lib/bitset.c: Likewise.
+	* lib/bitset_stats.c: Likewise.
+	* lib/bitsetv-print.c: Likewise.
+	* lib/bitsetv.c: Likewise.
+	* lib/ebitset.c: Likewise.
+	* lib/get-errno.c: Likewise.
+	* lib/lbitset.c: Likewise.
+	* lib/subpipe.c: Likewise.
+	* lib/timevar.c: Likewise.
+	* lib/vbitset.c: Likewise.
+	* lib/bitset.c: Include "bitset.h" first, to test interface.
+	* lib/bitset_stats.c: Include "bitset_stats.h" first.
+	* lib/bitsetv-print.c: Include "bitsetv-print.h" first.
+	* lib/bitsetv.c: Include "bitsetv.h" first.
+	* lib/get-errno.c: Include "get-errno.h" first.
+	* m4/.cvsignore: Add config-h.m4.
+	* tests/actions.at (Default %printer and %destructor for ...):
+	Adjust expected line numbers in output to reflect removal of #if
+	HAVE_CONFIG_H lines.
+	* tests/glr-regression.at (Missed %merge type warnings when ...):
+	Likewise.
+	* tests/regression.at (Braced code in declaration in rules section):
+	Likewise.
+	* tests/atlocal.in (CPPFLAGS): Don't define HAVE_CONFIG_H.
+	* tests/local.at (AT_DATA_GRAMMAR_PROLOGUE):
+	Include <config.h> unconditionally.
+
+	* bootstrap: Sync from coreutils, as follows:
+
+	2006-10-11  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* bootstrap (symlink_to_gnulib): Fix bug: the dot_dots shell
+	variable was sometimes used without being initialized.  This
+	messed up the installation of the INSTALL file in some cases.
+
+	2006-10-09  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* bootstrap (usage, main program, symlink_to_gnulib): Add option
+	--copy.  Inspired by a suggestion from Bruno Haible.
+
+	2006-10-03  Jim Meyering  <jim@meyering.net>
+
+	* bootstrap: Undo last change to this file, since now gnulib-tool
+	sticks with the automake default in generating dependencies.
+
+2006-10-12  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* configure.ac: Use AC_PROG_CC_STDC; this is more modern than
+	the old AC_PROG_CC / AM_PROG_CC_STDC combination.
+
+	* doc/bison.1: Add copyright notice.
+
+	* data/glr.c: Don't include <stdarg.h>; not used.
+
+	* NEWS: The -g and --graph options now output graphs in Graphviz
+	DOT format, not VCG format.
+	* doc/bison.1: Likewise.
+	* doc/bison.texinfo (Understanding, Bison Options): Likewise.
+	* THANKS: Add Satya Kiran Popuri, who proposed the initial version
+	of this change in
+	<http://lists.gnu.org/archive/html/bison-patches/2006-09/msg00158.html>.
+	* TODO: Remove Graphviz entry.
+	* src/Makefile.am (bison_SOURCES): Add graphviz.c and graphviz.h;
+	remove vcg.c, vcg.h, vcg_defaults.h.
+	* src/vcg.c, src/vcg.h, src/vcg_defaults.h: Remove.
+	* src/graphviz.c, src/graphviz.h: New files.
+	* src/files.c (compute_output_file_names): Output .dot, not .vcg.
+	* src/files.h: Make comment more generic.
+	* src/main.c (main): Likewise.
+	* src/print_graph.h: Likewise.
+	* src/getargs.c (usage): Make usage description more generic.
+	* src/print_graph.c: Include graphviz.h rather than vcg.h.
+	(static_graph, fgraph): Remove.  All uses changed to pass
+	arguments instead of sharing a static var.
+	(print_core, print_actions, print_state, print_graph):
+	Output graphviz format rather than VCG format.
+	* tests/.cvsignore: Remove *.vcg; add *.dot.
+	* tests/output.at: Expect *.dot files, not *.vcg files.
+
+	* data/Makefile.am (dist_pkgdata_DATA): Add bison.m4; this
+	accommodates the 2006-10-08 change.
+
+2006-10-11  Bob Rossi  <bob@brasko.net>
+
+	* data/push.c (yypushparse, yypvarsinit, yypvars): Wrap in b4_push_if.
+	(b4_yyssa, b4_yyerror_range): New macros.
+	(struct yypvars): Remove yyssa_ptr and yyerror_range_ptr fields.
+	(yypvarsinit): Remove init of removed fields.
+	(yypushparse): Remove use of removed fields; use new macros instead.
+
+2006-10-11  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/push.c (yypushparse): Fix memory leak if yymsg is malloced
+	in a push parser.  Reindent slightly to match yacc.c better.
+
+2006-10-11  Bob Rossi  <bob@brasko.net>
+
+	* data/push.c (struct yypvars): Remove yymsgbuf, yymsgbuf_ptr, yymsg,
+	yymsg_alloc fields.
+	(yypvarsinit, yypushparse): Remove init of removed fields.
+	(yypushparse): Use yymsgbuf instead of yymsgbuf_ptr.
+
+2006-10-09  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* THANKS: Add Paolo Bonzini and Bob Rossi.
+
+2006-10-08  Paolo Bonzini  <bonzini@gnu.org>
+
+	* data/c.m4 (b4_copyright, b4_epilogue, b4_location_initial_column,
+	b4_location_initial_line, p4_parse_param, b4_ints_in, b4_flag_if,
+	b4_define_flag_if and uses, b4_basename, b4_syncline, b4_user_code,
+	b4_define_user_cde and uses): Remove.
+	(b4_comment, b4_prefix, b4_sync_start): New.
+	* data/bison.m4: New file, with most of the content removed from c.m4.
+	* src/muscle_tab.h: Use "do {...} while(0)" throughout.
+	* src/output.c (output_skeleton): Pass bison.m4.
+	(prepare): Pass glr_flag and nondeterministic_flag.  Pass prefix
+	only if specified.
+
+2006-10-05  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Fix test failure reported by Tom Lane in
+	<http://lists.gnu.org/archive/html/bug-bison/2006-10/msg00000.html>
+	and try to make such failures easier to catch in the future.
+	* data/glr.c (YYTRANSLATE): Don't check for nonpositive arg;
+	that's now the caller's responsibility.
+	(yyprocessOneStack, yyrecoverSyntaxError, yyparse):
+	Set yychar = YYEOF if it's negative.
+	* tests/actions.at (yylex): Abort if asked to read past EOF.
+	* tests/conflicts.at (yylex): Likewise.
+	* tests/cxx-type.at (yylex): Likewise.
+	* tests/glr-regression.at (yylex): Likewise.
+	* tests/input.at (yylex): Likewise.
+	* tests/regression.at (yylex): Likewise.
+	* tests/torture.at (yylex): Likewise.
+
+2006-10-01  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Fix problems with translating English-language diagnostics.
+	* bootstrap: Fix bug introduced in recent bootstrap changes, with
+	respect to bison-runtime pot generation.  The YY_ stuff
+	wasn't being captured.
+	* bootstrap.conf (XGETTEXT_OPTIONS_RUNTIME): New var.
+	* po/POTFILES.in: Add src/location.c, src/scan-code.l.
+	* runtime-po/POTFILES.in: Add data/push.c.
+
+2006-09-29  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Merge bootstrap changes from coreutils.
+
+	2006-09-28  Jim Meyering  <jim@meyering.net>
+
+	Automatically generated dependencies are important even
+	when all of the sources in a directory come from gnulib.
+	* bootstrap (gnulib_tool): Remove the "no-dependencies" automake
+	option that gnulib-tool adds to what becomes our lib/gnulib.mk.
+
+	2006-09-23  Jim Meyering  <jim@meyering.net>
+
+	* bootstrap (gnulib_tool_options): Add "--local-dir gl".
+
+	2006-09-20  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* bootstrap: Add support for --force.
+	(usage): New function.  Describe usage less tersely.
+	(CVS_only_file): New var.
+
+2006-09-21  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/push.c (YYPUSH_MORE): Make it an enum instead.
+	(yypushparse): Use YYPUSH_MORE instead of the mystery constant.
+	Adjust white space and comments to match GNU style better.
+
+2006-09-20  Bob Rossi  <bob@brasko.net>
+
+	* data/push.c (yyresult_get): Remove function.
+	(YYPUSH_MORE): Add #define.
+	(yypushparse): Modify return value.
+
+2006-09-20  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* stamp-h.in: Remove; no longer needed.
+	* .cvsignore: Replace autom4te.cache and config.cache with *.cache.
+	Remove config.h, config.hin, intl (no longer created).
+	* lib/.cvsignore: Add config.h, config.hin, configmake.h, inttypes.h,
+	stamp-h1.
+
+	Sync bootstrap from coreutils, as follows:
+
+	2006-09-18  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* bootstrap (symlink_to_gnulib): New function.
+	(cp_mark_as_generated): Use it, to prefer symlinks-to-gnulib
+	to copies-of-gnulib.
+	(cp_mark_as_generated, slurp, gnulib_files):
+	Avoid making a copy if it's the same as the old version.
+	(gnulib_files): Add support for this variable (used by Bison).
+
+2006-09-20  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* src/getargs.c (usage): Rework to use conventions similar to
+	coreutils, to make translation a bit easier and the code a bit
+	smaller.  Problem reported by Tim Van Holder.
+
+2006-09-15  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Use some of gnulib's new modules, taken from coreutils.
+
+	* bootstrap: Sync from coreutils, except add support for gnulib_files.
+	* bootstrap.conf: New file.
+	(gnulib_modules): Add configmake, inttypes, unistd.
+	(XGETTEXT_OPTIONS): Add complain, complain_at,
+	fatal, fatal_at, warn, warn_at, unexpected_end.
+	* configure.ac (AC_CONFIG_HEADERS): config.h is now in lib, not here.
+	(gl_USE_SYSTEM_EXTENSIONS): Remove; gl_EARLY now does this.
+	(gl_EARLY): Add.
+	(AM_STDBOOL_H): Remove; gl_INIT now dows this.
+	(gl_INIT): Add
+	(GNULIB_AUTOCONF_SNIPPET): Remove.
+	(AM_GNU_GETTEXT): Add; require formatstring macros since that's
+	the pickiest.
+	* lib/.cvsignore: Add inttypes_.h.
+	* lib/Makefile.am: Include gnulib.mk first so we can append to it.
+	(AM_CFLAGS): Add WERROR_CFLAGS, to be more like coreutils.
+	(BUILT_SOURCES, EXTRA_DIST, MOSTLYCLEANFILES): Remove
+	no-longer-necessary initializations.
+	(lib_SOURCES): Remove, replacing by libbison_a_SOURCES.
+	* lib/subpipe.c: Include <unistd.h> unconditionally, now that we
+	use the unistd module.
+	* src/system.h: Likewise.
+	* m4/.cvsignore: Remove *_gl.m4, gnulib.m4, inttypes_h.m4, uintmax_t.m4,
+	ulonglong.m4.  Add gettext.m4, gnulib-cache.m4, gnulib-comp.m4,
+	gnulib-tool.m4, inttypes-h.m4, inttypes-pri.m4, inttypes.m4.
+	* src/Makefile.am (DEFS): Remove, since configmake does this for us.
+	(AM_CPPFLAGS): Remove -I../lib, since Automake does that for us.
+	* src/system.h: Include inttypes.h unconditionally, now that we
+	use the inttypes module.  Don't bother to include stdint.h, since
+	inttypes.h now does that for us.
+	(LOCALEDIR): Remove, now that we use the configmake module.
+	* src/getargs.c: Include configmake.h.
+	* src/main.c: Likewise.
+	* src/output.c: Likewise.
+	* tests/atlocal.in (CPPFLAGS): Include from $abs_top_builddir/lib,
+	not from $abs_top_builddir, since config.h moved.
+
+
+	Port to GCC 2.95.  First two problems reported by Michael Deutschmann in
+	<http://lists.gnu.org/archive/html/bug-bison/2006-09/msg00018.html>.
+
+	* src/parse-gram.y (symbol_declaration): Don't put statements
+	before declarations; it's not portable to C89.
+	* src/scan-code.l (handle_action_at): Likewise.
+
+	* src/scan-code.l: Always initialize braces_level; the old code
+	left it uninitialized and therefore had undefined behavior.
+
+	Don't attempt to redefine 'assert', since it runs afoul of
+	systems where standard headers (mistakenly) include <assert.h>.
+	Instead, define and use our own alternative, called 'aver'.
+	* src/reader.c: Don't include assert.h, since we no longer
+	use assert.
+	* src/scan-code.l: Likewise.
+	* src/system.h (assert): Remove, replacing with....
+	(aver): New function, taking a bool arg.  All uses changed.
+	* src/tables.c (pack_vector): Ensure that aver arg is bool,
+	not merely an integer.
+
+2006-09-15  Bob Rossi  <bob@brasko.net>
+
+	Add support for push parsing.  Based on the original work of
+	Odd Arild Olsen <oao@fibula.no>.
+	* data/Makefile.am (dist_pkgdata_DATA): Add push.c.
+	* data/c.m4 (YYPUSH): New.
+	(b4_push_if): New macro.  Use it instead of #ifdef YYPUSH.
+	* data/push.c: New file.
+	* src/getargs.c (push_parser): New var.
+	* src/getargs.h (push_parser): New declaration.
+	* src/output.c (prepare): Add macro insertion of `push_flag'.
+	* src/parse-gram.y (PERCENT_PUSH_PARSER): New token.
+	(prologue_declaration): Parse %push-parser.
+	* src/scan-gram.l: Scan new PERCENT_PUSH_PARSER token.
+	* tests/calc.at (_AT_CHECK_CALC_ERROR): Add "Return" and "Now" to
+	list of removed lines from the traces observed.
+	(AT_CHECK_CALC_LALR): Added push parser tests.
+
+2006-09-13  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* NEWS: Version 2.3a.
+	* configure.ac (AC_INIT): Likewise.
+
+	* tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Remove
+	"#define YYSTYPE int" that caused "make maintainer-check" to fail
+	due to header ordering dependencies.  I don't know why the #define
+	was there.
+
+	Fix glr.cc and lalr1.cc's use of YYDEBUG so that there's zero
+	runtime cost when YYDEBUG is not defined, and so that some tests
+	that used to fail now work.  Problem and initial suggestion by
+	Paolo Bonzini.
+	* data/c++.m4 (b4_parse_param_cons): Omit leading ','.
+	* data/glr.cc (b4_parser_class_name):
+	Initialize yycdebug_ only if YYDEBUG.  Also, initialize yydebug_.
+	(debug_level, set_debug_level): Affect yydebug_, not ::yydebug.
+	(yydebug_) [YYDEBUG]: New member.
+	(yycdebug_): Now defined only if YYDEBUG.
+	* data/lalr1.cc (yydebug_, yycdebug_): Now defined only if YYDEBUG.
+	(YYCDEBUG) [!YYDEBUG]: Don't use yydebug_ and yycdebug_.
+	(b4_parser_class_name): Initialize yydebug_ and yycdebug_ only
+	if YYYDEBUG.
+	(debug_stream, set_debug_stream, debug_level, set_debug_level):
+	Define only if YYDEBUG.
+	* tests/calc.at (_AT_DATA_CALC_Y) [!YYDEBUG]: Omit call to
+	set_debug_level.
+	* tests/regression.at (_AT_DATA_DANCER_Y) [!YYDEBUG]: Likewise.
+	* tests/calc.at (AT_CHECK_CALC_GLR_CC): Uncomment calls to
+	AT_CHECK_CALC_GLR_CC that are working now.
+
+2006-09-12  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/glr.cc (YYERROR_VERBOSE, YYTOKEN_TABLE): Remove.
+	We don't need them in glr.cc, and glr.c defines them.
+	Defining YYERROR_VERBOSE to 0 here breaks glr.c, since glr.c
+	assumes that defining it to anything is the same as defining
+	it to 1.  Problem reported by Paolo Bonzini.
+
+2006-09-12  Paolo Bonzini  <bonzini@gnu.org>  (tiny change)
+
+	* data/c.m4 (b4_null, b4_case): Define.
+	* src/output.c (prepare_symbols): Use b4_null.
+	(user_actions_output): Use b4_case.
+
+2006-09-11  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/glr.c (b4_shared_declarations): Put start-header first,
+	before any #includes that we generate, so that feature-test
+	macros work.  Problem reported by Michael Deutschmann in
+	<http://lists.gnu.org/archive/html/bug-bison/2006-09/msg00004.html>.
+	* data/lalr1.cc: Likewise.
+	* doc/bison.texinfo (Prologue): Document that feature-test macros
+	should be defined before any Bison declarations.
+	* tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Put defns
+	that depend on location.hh after, not before, Bison decls, since
+	we now include location.hh after the first user prologue.
+
+	* doc/bison.texinfo (Calc++ Parser): Fix memory leak reported by
+	Sander Brandenburg in
+	<http://lists.gnu.org/archive/html/bug-bison/2006-09/msg00002.html>.
+	Also, fix minor white space and comment issues.
+	(Prologue): Mention that it's better to define feature-test macros
+	before Bison declarations.  Problem reported by Michael Deutschmann.
+
+	* README-cvs: Fix typo: "&" should be "&&".  Problem reported
+	by Jim Meyering.
+	* m4/.cvsignore: Add argmatch.m4.  Remove obstack.m4, strerror_r.m4.
+	This adjusts to recent gnulib changes.
+
+2006-09-04  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Finish implementation of per-type %destructor/%printer.  Discussed
+	starting at
+	<http://lists.gnu.org/archive/html/bison-patches/2006-02/msg00064.html>
+	and
+	<http://lists.gnu.org/archive/html/bison-patches/2006-06/msg00091.html>.
+	* NEWS (2.3+): Add a description of this feature to the default
+	%destructor/%printer description.
+	* doc/bison.texinfo (Freeing Discarded Symbols): Likewise.
+	* src/symlist.c (symbol_list_destructor_set, symbol_list_printer_set):
+	Invoke semantic_type_destructor_set or semantic_type_printer_set when a
+	list node contains a semantic type.
+	* src/symtab.c, src/symtab.h: Extend with a table that associates
+	semantic types with their %destructor's and %printer's.
+	(semantic_type_from_uniqstr, semantic_type_get,
+	semantic_type_destructor_set, semantic_type_printer_set): New functions
+	composing the public interface of that table.
+	(symbol_destructor_get, symbol_destructor_location_get,
+	symbol_printer_get, symbol_printer_location_get):  If there's no
+	per-symbol %destructor/%printer, look up the per-type before trying
+	the default.
+	* tests/actions.at (Per-type %printer and %destructor): New test case.
+	* tests/input.at (Default %printer and %destructor redeclared):
+	Extend to check that multiple occurrences of %symbol-default in a
+	single %destructor/%printer declaration is an error.
+	(Per-type %printer and %destructor redeclared, Unused values with
+	per-type %destructor): New test cases.
+
+2006-09-04  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Require default %destructor/%printer to be declared using
+	%symbol-default instead of an empty symbol list, and start working on
+	new per-type %destructor/%printer.  Discussed at
+	<http://lists.gnu.org/archive/html/bison-patches/2006-09/msg00007.html>.
+	* NEWS (2.3+): Add %symbol-default to example.
+	* bison.texinfo (Freeing Discarded Symbols): Likewise.
+	(Table of Symbols): Add entry for %symbol-default.
+	* src/parse-gram.y (PERCENT_SYMBOL_DEFAULT): New token.
+	(generic_symlist, generic_symlist_item): New nonterminals for creating
+	a list in which each item is a symbol, semantic type, or
+	%symbol-default.
+	(grammar_declaration): Use generic_symlist in %destructor and %printer
+	declarations instead of symbols.1 or an empty list.
+	(symbol_declaration, precedence_declaration, symbols.1): Update actions
+	for changes to symbol_list.
+	* src/reader.c: Update for changes to symbol_list.
+	* src/scan-code.l: Likewise.
+	* src/scan-gram.l: Scan new PERCENT_SYMBOL_DEFAULT token.
+	* src/symlist.c, src/symlist.h: Extend such that a list node may
+	represent a semantic type or a %symbol-default in addition to just an
+	ordinary symbol.  Add switched functions for setting %destructor's and
+	%printer's.
+	* tests/actions.at, tests/input.at: Add %symbol-default to all default
+	%destructor/%printer declarations.
+
+2006-08-23  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Whether the default %destructor/%printer applies to a particular symbol
+	isn't a question of whether the user *declares* that symbol (in %token,
+	for example).  It's a question of whether the user by any means
+	*defines* the symbol at all (by simply using a char token, for
+	example).  $end is defined by Bison whereas any other token with token
+	number 0 is defined by the user.  The error token is always defined by
+	Bison regardless of whether the user declares it with %token, but we
+	may one day let the user define error as a nonterminal instead.
+	* NEWS (2.3+): Say "user-defined" instead of "user-declared".
+	* doc/bison.texinfo (Freeing Discarded Symbols): Likewise, and document
+	the meaning of "user-defined".
+	* tests/actions.at (Default %printer and %destructor for user-declared
+	end token): Rename to...
+	(Default %printer and %destructor for user-defined end token): ...
+	this.
+
+	* src/symtab.c (symbol_destructor_get, symbol_printer_get): In the
+	computation of whether to apply the default, don't maintain a list of
+	every Bison-defined symbol.  Instead, just check for a first character
+	of '$', which a user symbol cannot have, and check for the error token.
+
+2006-08-21  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Don't apply the default %destructor or %printer to the error token,
+	$undefined, or $accept.  This change fits the general rule that the
+	default %destructor and %printer are only for user-declared symbols,
+	and it solves several difficulties that are described in the new test
+	cases listed below.
+	* src/symtab.c (symbol_destructor_get, symbol_printer_get): Implement.
+	* tests/actions.at (Default %printer and %destructor are not for error
+	or $undefined, Default %printer and %destructor are not for $accept):
+	New test cases.
+
+2006-08-19  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Allow %start after the first rule.
+	* src/reader.c (grammar_current_rule_begin): Don't set the start symbol
+	when parsing the first rule.
+	(check_and_convert_grammar): Search for it here after all grammar
+	declarations have been parsed.  Skip midrules, which have dummy LHS
+	nonterminals.
+	* src/symtab.c (symbol_is_dummy): New function.
+	* src/symtab.h (symbol_is_dummy): Declare it.
+	* tests/input.at (%start after first rule): New test.
+
+2006-08-18  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Redo some of the previous commit: add back the ability to use
+	non-aliased/undeclared string literals since it might be useful to
+	those declaring %token-table.
+	* src/reader.c (check_and_convert_grammar): Undo changes in previous
+	commit: don't worry about complaints from symbols_pack.
+	* src/symtab.c (symbol_new, symbol_class_set,
+	symbol_check_alias_consistency): Undo changes in previous commit: count
+	each string literal as a new symbol and token, assign it a symbol
+	number, and don't complain about non-aliased string literals.
+	(symbols_pack): Since symbol_make_alias still does not decrement symbol
+	and token counts but does still set aliased tokens to the same number,
+	symbol_pack_processor now leaves empty slots in the symbols array.
+	Remove those slots.
+	* tests/regression.at (Undeclared string literal): Remove test case
+	added in previous commit since non-aliased string literals are allowed
+	again.
+	(Characters Escapes, Web2c Actions): Undo changes in previous commit:
+	remove unnecessary string literal declarations.
+	* tests/sets.at (Firsts): Likewise.
+
+2006-08-18  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Don't allow an undeclared string literal, but allow a string literal to
+	be used before its declaration.
+	* src/reader.c (check_and_convert_grammar): Don't invoke packgram if
+	symbols_pack complained.
+	* src/symtab.c (symbol_new): Don't count a string literal as a new
+	symbol.
+	(symbol_class_set): Don't count a string literal as a new token, and
+	don't assign it a symbol number since symbol_make_alias does that.
+	(symbol_make_alias): It's not necessary to decrement the symbol and
+	token counts anymore.  Don't assume that an alias declaration occurs
+	before any uses of the identifier or string, and thus don't assert that
+	one of them has the highest symbol number so far.
+	(symbol_check_alias_consistency): Complain if there's a string literal
+	that wasn't declared as an alias.
+	(symbols_pack): Bail if symbol_check_alias_consistency failed since
+	symbol_pack asserts that every token has been assigned a symbol number
+	although undeclared string literals have not.
+	* tests/regression.at (String alias declared after use, Undeclared
+	string literal): New test cases.
+	(Characters Escapes, Web2c Actions): Declare string literals as
+	aliases.
+	* tests/sets.at (Firsts): Likewise.
+
+2006-08-14  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	In the grammar scanner, STRING_FINISH unclosed constructs and return
+	them to the parser in order to improve error messages.
+	* src/scan-gram.l (SC_ESCAPED_STRING, SC_ESCAPED_CHARACTER,
+	SC_BRACED_CODE, SC_PROLOGUE): Implement.
+	* tests/input.at (Unclosed constructs): New test case.
+	* tests/regression.at (Invalid inputs): Update now that unclosed %{ is
+	seen.
+
+	* src/scan-gram.h, src/scan-gram.l (gram_last_braced_code_loc): Remove
+	unused global.
+
+2006-08-13  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Handle string aliases for character tokens correctly.
+	* src/symtab.c (symbol_user_token_number_set): If the token has an
+	alias, check and set its alias's user token number instead of its own,
+	which is set to indicate the alias.  Previously, every occurrence of
+	the character token in the grammar overwrote that alias indicator with
+	the character code.
+	* tests/input.at (String aliases for character tokens): New test.
+
+2006-08-12  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* src/parse-gram.y: Add `%expect 0' so we don't overlook conflicts.
+
+2006-08-11  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* bootstrap: Put in need-ngettext argument to AM_GNU_GETTEXT,
+	to prevent failures when building on older platforms.
+	Check for autopoint failure.
+	Set XGETTEXT_OPTIONS to values that check for C format strings,
+	so that translators are warned about them (this also helps
+	prevent core dumps).
+
+	* lib/subpipe.c (create_subpipe): Use new gnulib pipe_safer
+	function, since it simplifies our code a bit.
+
+	* configure.ac (AC_ARG_ENABLE): Use -Wextra -Wno-sign-compare
+	rather than -W, so we don't get bogus warnings about sign comparisons.
+	Add -Wpointer-arith, since that warning is useful (it reports code
+	that does not conform to C89 and that some compilers reject).
+	* data/c.m4, data/glr.c, data/lalr1.cc, data/yacc.c: Undo latest change,
+	since it's no longer needed.
+
+2006-08-10  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Clean up scanners a bit.
+	* src/flex-scanner.h (FLEX_NO_OBSTACK): New macro that blocks obstack
+	definitions so gcc won't warn when obstack_for_string is unused.
+	* src/scan-code.l: config.h and system.h are already #include'd by
+	scan-code-c.c, so get rid of them here.
+	* src/scan-gram.l: Likewise.
+	* src/scan-skel.l: Likewise, and use flex-scanner.h without obstack
+	definitions rather than duplicating the rest of it.
+	* src/scan-gram-c.c, scan-skel-c.c: #include "system.h".
+
+2006-08-09  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Suppress signed/unsigned comparison warnings for yycheck.
+	* data/c.m4 (b4_safest_int_type): New macro.
+	* data/glr.c, data/lalr1.cc: Wherever you compare yycheck[i] against
+	a signed int type, cast it to b4_safest_int_type first.
+	* data/yacc.c: Likewise.
+	(b4_safest_int_type): Overwrite the one from c.m4 since b4_int_type is
+	also overwritten.
+
+2006-08-09  Ralf Wildenhues <Ralf.Wildenhues@gmx.de>  (tiny change)
+
+	* doc/bison.texinfo: Fix some typos.
+
+2006-08-02  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* m4/.cvsignore: Add inttypes_h.m4,lib-ld.m4, lib-prefix.m4,
+	po.m4, stdint_h.m4, uintmax_t.m4, ulonglong.m4, warning.m4.
+
+	* bootstrap (gnulib_tool): Stop using --assume-autoconf;
+	the latest gnulib does this a different way.
+	(get_translations): Sharuzzaman Ahmat Raslan reported that the ms
+	translation was patched, so stop omitting it.
+
+2006-07-29  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Enable declaration of default %printer/%destructor.  Make the parser
+	use these for all user-declared grammar symbols for which the user does
+	not declare a specific %printer/%destructor.  Thus, the parser uses it
+	for token 0 if the user declares it but not if Bison generates it as
+	$end.  Discussed starting at
+	<http://lists.gnu.org/archive/html/bison-patches/2006-02/msg00064.html>,
+	<http://lists.gnu.org/archive/html/bison-patches/2006-06/msg00091.html>,
+	and
+	<http://lists.gnu.org/archive/html/bison-patches/2006-07/msg00019.html>.
+	* NEWS (2.3+): Mention.
+	* doc/bison.texinfo (Actions in Mid-Rule): It's no longer impossible to
+	declare a %destructor for a mid-rule's semantic value.  It's just
+	impossible to declare one specific to it.
+	(Freeing Discarded Symbols): Mention that @$ can be used in %destructor
+	code.  Describe default %destructor form.
+	* src/parse-gram.y (grammar_declaration): Parse default
+	%printer/%destructor declarations.
+	* src/output.c (symbol_destructors_output): Use symbol_destructor_get
+	and symbol_destructor_location_get rather than accessing the destructor
+	and destructor_location members of struct symbol.
+	(symbol_printers_output): Likewise but for %printer's.
+	* src/reader.c (symbol_should_be_used): Likewise but for %destructor's
+	again.
+	* src/symtab.c (default_destructor, default_destructor_location,
+	default_printer, default_printer_location): New static global
+	variables to record the default %destructor and %printer.
+	(symbol_destructor_get, symbol_destructor_location_get,
+	symbol_printer_get, symbol_printer_location_get): New functions to
+	compute the appropriate %destructor and %printer for a symbol.
+	(default_destructor_set, default_printer_set): New functions to set the
+	default %destructor and %printer.
+	* src/symtab.h: Prototype all those new functions.
+	* tests/actions.at (Default %printer and %destructor): New test to
+	check that the right %printer and %destructor are called, that they're
+	not called for $end, and that $$ and @$ work correctly.
+	(Default %printer and %destructor for user-declared end token): New
+	test to check that the default %printer and %destructor are called for
+	a user-declared end token.
+	* tests/input.at (Default %printer and %destructor redeclared, Unused
+	values with default %destructor): New tests to check related grammar
+	warnings and errors.
+
+2006-07-29  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Clean up handling of %destructor for the end token (token 0).
+	Discussed starting at
+	<http://lists.gnu.org/archive/html/bison-patches/2006-07/msg00019.html>
+	and
+	<http://lists.gnu.org/archive/html/help-bison/2006-07/msg00013.html>.
+
+	Make the skeletons consistent in how they pop the end token and invoke
+	its %destructor.
+	* data/glr.c (yyrecoverSyntaxError, yyparse): Don't pop the start
+	state, which has token number 0, since this would invoke the
+	%destructor for the end token.
+	* data/lalr1.cc (yy::parser::parse): Don't check for the final state
+	until after shifting the end token, or else it won't be popped.
+	* data/yacc.c (yyparse): Likewise.
+
+	* data/glr.c (yyparse): Clear the lookahead after shifting it even when
+	it's the end token.  Upon termination, destroy an unshifted lookahead
+	even when it's the end token.
+	* data/lalr1.cc (yy::parser::parse): Likewise.
+	* data/yacc.c (yyparse): Likewise.
+
+	* src/reader.c (packgram): Don't check rule 0.  This suppresses unused
+	value warnings for the end token when the user gives the end token a
+	%destructor.
+
+	* tests/actions.at (Printers and Destructors): Test all the above.
+
+2006-07-24  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Update to latest gnulib and gettext versions.
+	* bootstrap (gnulib-modules): Remove hard-locale, stdio-safer.
+	Add fopen-safer.
+	(gnulib_files): Add m4/warning.m4.  Don't worry about files
+	overwritten by autopoint.
+	Replace gt_INTL_SUBDIR_CORE with an empty body in m4/gettext_gl.m4.
+	Suppress "id", "ms", "tr" translations for now, since gettext 0.15
+	rejects them.
+	Don't use autoreconf; instead, invoke autopoint etc. by hand,
+	so that we can remove the intl files at a better time.
+	(intl_files_to_remove): Remove aclocal.m4, since it gets
+	rebuilt anyway.  Remove m4/inttypes_h.m4, m4/inttypes.m4,
+	m4/isc-posix.m4, m4/lib-ld.m4, m4/lib-prefix.m4, m4/po.m4,
+	m4/stdint_h.m4, m4/uintmax_t.m4, m4/ulonglong.m4.
+	Add m4/inttypes-h.m4, m4/lock.m4, m4/visibility.m4.
+	Remove datarootdir hack; no longer needed.
+	* configure.ac: Use gl_WARNING_CFLAGS rather than BISON_WARNING.
+	(AM_GNU_GETTEXT_VERSION): Bump from 0.12 to 0.15.
+	* lib/.cvsignore: Remove hard-locale.c, hard-locale.h, strdup.c,
+	strdup.h.
+	* m4/.cvsignore: Remove hard-locale.m4, strdup.m4.
+	* m4/warning.m4: Remove from CVS, since we now use gnulib's version.
+
+2006-07-20  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* bootstrap: Adjust to today's change to gnulib-tool by invoking
+	it with --assume-autoconf='latest-stable'.
+
+2006-07-13  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* src/parse-gram.y (grammar_declaration): Don't confuse Doxygen (at
+	least 1.4.7 and 1.4.4) by putting a #line between `typedef union
+	YYSTYPE' and `{'.
+	* src/muscle_tab.h (muscle_grow): Replace the header comments with
+	those from muscle_tab.c since the old ones are misleading.
+
+2006-07-13  Akim Demaille  <akim@epita.fr>
+
+	Support %define "KEY" {VALUE}.
+	* src/scan-code.h, src/scan-code.l (translate_action)
+	(translate_rule_action, translate_symbol_action, translate_code):
+	Return char *, not const char *.
+	* src/parse-gram.y (declaration): Rename as...
+	(prologue_declaration): this.
+	(string_content): Remove this nonterminal, use STRING.
+	(braceless, content, content.opt): New nonterminal.
+	Use them.
+	(%define): Now accept content.opt, i.e., accept also BRACED_CODE
+	as value.
+	* src/scan-gram.l (getargs.h): Don't include it.
+
+2006-07-12  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/lalr1.cc (YYCDEBUG): Use 'if (yydebug_) (*yycdebug_)'
+	rather than a for-loop that declares a local bool variable.  This
+	should work around a compatibility problem with a Cray x1e C++
+	compiler reported by Hung Nguyen in
+	<http://lists.gnu.org/archive/html/help-bison/2006-07/msg00022.html>.
+	The for-loop was introduced in the 2004-11-17 change but I don't
+	know why it was needed.
+
+2006-07-12  Akim Demaille  <akim@epita.fr>
+
+	* data/c.m4: Comment changes.
+
+2006-07-10  Akim Demaille  <akim@lrde.epita.fr>
+
+	* src/complain.c (error_message, ERROR_MESSAGE): New.
+	To factor...
+	(fatal_at, fatal, warn_at, warn, complain_at, complain): these.
+	* src/complain.h, src/complain.c (warning_issued): Remove, unused.
+
+2006-07-09  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* NEWS: Instead of %union, you can define and use your own union type
+	YYSTYPE if your grammar contains at least one <type> tag.
+	Your YYSTYPE need not be a macro; it can be a typedef.
+	* doc/bison.texinfo (Value Type, Multiple Types, Location Type):
+	(Union Decl, Decl Summary): Document this.
+	* data/glr.c (YYSTYPE): Implement this.
+	* data/glr.cc (YYSTYPE): Likewise.
+	* data/lalr1.cc (YYSTYPE): Likewise.
+	* data/yacc.c (YYSTYPE): Likewise.
+	* src/output.c (prepare): Output tag_seen_flag.
+	* src/parse-gram.y (declaration, grammar_declaration):
+	Use 'union_seen' rather than 'typed' to determine whether
+	%union has been seen, since grammars can now be typed without
+	%union.
+	(symbol_declaration, type.opt, symbol_def):
+	Keep track of whether a tag has been seen.
+	* src/reader.c (union_seen, tag_seen): New vars.
+	(typed): remove.
+	* src/reader.h (union_seen, tag_seen, typed): Likewise.
+	* src/scan-code.l (untyped_var_seen): New variable.
+	(handle_action_dollar): Adjust to above changes.
+	(handle_action_dollar, handle_action_at):
+	Improve overflow checking for outlandish numbers.
+	* tests/input.at (AT_CHECK_UNUSED_VALUES): Redo test to
+	avoid new diagnostics generated by above changes.
+	* tests/regression.at (YYSTYPE typedef): Add test to check
+	for type tags without %union.
+
+	* src/symlist.c (symbol_list_length): Return int, not unsigned
+	int, since callers expect int.  This may need to get revisited
+	once we have proper integer overflow checking.
+
+	* src/scan-gram.h (gram_scanner_cursor): Remove decl, since this
+	object is now static.
+
+	* src/getargs.c (flags_argmatch): Return void, not int,
+	to pacify ./configure --enable-gcc-warnings.
+
+	* src/flex-scanner.h (STRING_FREE): Don't use FLEX_PREFIX (last_string)
+	since last_string is already defined to FLEX_PREFIX (last_string).
+
+2006-07-09  Akim Demaille  <akim@lrde.epita.fr>
+
+	Implement --warnings/-W.
+	* src/getargs.c (report_argmatch, trace_argmatch): Remove,
+	replaced by...
+	(flags_argmatch, FLAGS_ARGMATCH): this new function and macro.
+	Adjust callers.
+	* src/getargs.h, src/getargs.c (warnings, warnings_flags)
+	(warnings_args, warnings_types): New.
+	(getargs, short_options, long_options): Accept -W/--warnings.
+	Sort the options by alphabetical order, upper case letter right
+	before its lower case.
+
+2006-07-09  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Change %merge result type clash warnings to errors.  Discussed at
+	<http://lists.gnu.org/archive/html/bison-patches/2006-07/msg00026.html>.
+	* src/reader.c (record_merge_function_type): Use complain_at.
+	* tests/glr-regression.at (Missed %merge type warnings when LHS type is
+	declared later): Update test case results.
+
+2006-07-09  Akim Demaille  <akim@lrde.epita.fr>
+
+	* src/getargs.h, src/getargs.c: Swap --report and --trace handling
+	to be in alphabetical order.
+	(trace_args): Spelling fixes.
+
+2006-07-09  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/yacc.c (YYID, yy_stack_print): Prefix local vars with "yy"
+	so they don't collide with user-defined macros.
+	(yy_stack_print): Don't assume that yytype_int16 promotes to int;
+	this was never guaranteed, and now that we're using gnulib stdint,
+	which defines int_fast16_t to long int, the problem is exposed.
+
+2006-07-08  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/c.m4 (b4_basename): Simplify a bit, since we don't
+	need the full POSIX semantics (and weren't implementing them
+	anyway).
+
+	Adjust to Autoconf 2.60 and today's gnulib.
+	* bootstrap (gnulib_modules): Add stdint.
+	Remove special case for m4/onceonly_2_57.m4, since gnulib-tool
+	no longer copies it.
+	(intl_files_to_remove): Remove m4/longlong.m4 and m4/wchar_t.m4,
+	since stdint needs the former and wcwidth (which is now required
+	by mbswidth) needs the latter.
+	Append 'datarootdir = @datarootdir@' to po/Makefile.in.in, to
+	work around a compatibility glitch between gettext 0.14.6 and
+	Autoconf 2.60.
+	* configure.ac (AC_PREREQ): Require Autoconf 2.60.
+	Do not check for uintptr_t, since new stdint module does the right
+	thing.
+	* lib/.cvsignore: Remove alloca.c, alloca.h, alloca_.h.
+	Add stdint.h, stdint_.h, wcwidth.h.
+	* m4/.cvsignore: Remove alloca.m4, onceonly.m4.
+	Add absolute-header.m4, double-slash-root.m4, longlong.m4,
+	stdint.m4, wchar_t.m4, wcwidth.m4.
+	* src/files.c: Include <dirname.h> and <stdio-safer.h> in the
+	usual order for ../lib/*.h files.
+	(file_name_split): Use last_component, not base_name, to adjust
+	to gnulib changes.
+	* src/parse-gram.h: Include <strverscmp.h> in the usual order
+	for ../lib/*.h files.
+	(YYTYPE_INT16, YYTYPE_INT8, YYTYPE_UINT16, YYTYPE_UINT8):
+	Define unconditionally, since we now assume the stdint module.
+	* src/scan-skel.l: Include <dirname.h>.
+	(BASE_QPUTS): Use last_component, not base_name.
+	* src/system.h: Include <unlocked-io.h> in the usual order
+	for ../lib/*.h files.  Include <stdint.h> unconditionally,
+	since we now use the stdint module.
+	(uintptr_t): Declare if UINTPTR_MAX is not defined, not
+	HAVE_UINTPTR_T, since we now use the stdint module.
+	(base_name): Remove decl, since files now include <dirname.h>
+	to get the decl.
+
+2006-07-08  Akim Demaille  <akim@lrde.epita.fr>
+
+	* data/c.m4 (b4_location_initial_column, b4_location_initial_line):
+	New, default to 1.
+	* data/yacc.c, data/glr.c, data/location.cc: Use them.
+	* NEWS, doc/bison.texinfo: The initial column and line are 1 by
+	default.
+	* tests/calc.at: Adjust.
+
+2006-07-08  Akim Demaille  <akim@lrde.epita.fr>
+
+	* data/c.m4 (b4_basename): New.
+	(b4_syncline): Also output the location of its invocation (from
+	the skeleton).
+	(b4_user_action, b4_define_user_action, b4_user_actions)
+	(b4_user_initial_action, b4_user_post_prologue,	b4_user_start_header)
+	(b4_user_stype): New.
+	* data/yacc.c, data/glr.c, data/lalr1.cc, data/glr.cc: Use them.
+
+2006-07-07  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	In the grammar file, the first column is 1 not 0 on the first line as
+	on every other line.
+	* src/parse-gram.y (%initial-action): Initialize @$ correctly.
+	* tests/input.at (Torturing the Scanner): Update output.
+
+	* src/scan-gram.l (scanner_cursor): Declare it static.
+
+2006-07-07  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	In warnings, say "previous declaration" rather than "first
+	declaration".
+	* src/symtab.c (redeclaration): Do that here.
+	* src/reader.c (record_merge_function_type): In the case of a result
+	type clash, report the previous declaration rather than the very first
+	one in the grammar file.
+	* tests/glr-regression.at (Missed %merge type warnings when LHS type is
+	declared later): Add a third declaration to check this behavior.
+	* tests/input.at (Incompatible Aliases): Update output.
+
+2006-06-27  Akim Demaille  <akim@epita.fr>
+
+	* doc/Doxyfile.in: New.
+	* doc/Makefile.am: Use it.
+	* src/lalr.h, src/symtab.h: Initial doxygenation.
+
+2006-06-26  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Don't miss %merge result type warnings just because the LHS types are
+	declared after the %merge.  This continues the effort of the previous
+	patch.
+	* src/reader.c (get_merge_function): Don't set the merger type yet.
+	(record_merge_function_type): New function for setting the merger type
+	and checking for clashes.
+	(grammar_current_rule_merge_set): Set the location of the %merge for
+	the current rule.
+	(packgram): Invoke record_merge_function_type for each rule now that
+	all symbol type declarations have been parsed.
+	* src/reader.h (merger_list.type_declaration_location): New member
+	storing the location of the first %merge from which the type for this
+	merging function was derived.
+	* src/symlist.h (symbol_list.merger_declaration_location): New member
+	storing the location of a rule's %merge, if any.
+	* tests/glr-regression.at (Missed %merge type warnings when LHS type is
+	declared later): New test to catch the error fixed by the above patch.
+
+2006-06-26  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Get action warnings (grammar_rule_check) right even when symbol
+	declarations appear after the rules.  Discussed at
+	<http://lists.gnu.org/archive/html/bison-patches/2006-06/msg00108.html>
+	and
+	<http://lists.gnu.org/archive/html/bison-patches/2006-06/msg00151.html>.
+	Don't mistake the type of $$ in a midrule to be that of its parent
+	rule's $$.
+	* src/reader.c (grammar_current_rule_end): Don't invoke
+	grammar_rule_check yet since not all symbol declarations may have been
+	parsed yet.
+	(grammar_midrule_action): Likewise.
+	Don't record whether the midrule's $$ has been used yet since actions
+	haven't been translated yet.
+	Record the midrule's parent rule and its RHS index within the parent
+	rule.
+	(grammar_current_rule_action_append): Don't translate the action yet
+	since not all symbol declarations may have been parsed yet and, thus,
+	warnings about types for $$, $n, @$, and @n can't be reported yet.
+	(packgram): Translate the action and invoke grammar_rule_check now that
+	all symbol declarations have been parsed.
+	* src/scan-code.l (handle_action_dollar): Now that this is invoked
+	after parsing the entire grammar file, the symbol list here in the case
+	of a midrule is actually the midrule's empty RHS, so reference its
+	parent rule's RHS where necessary.
+	On the other hand, now that you can already know it's a midrule, you
+	aren't forced to think $$ has the same type as its parent rule's $$.
+	(handle_action_at): In the case of a midrule, reference the parent rule
+	where necessary.
+	* src/symlist.c (symbol_list_new): Initialize new midrule-related
+	members.
+	(symbol_list_length): Now that this is invoked after all rules have
+	been parsed, a NULL symbol (rather than a NULL symbol list node)
+	terminates a rule.  symbol_list_print already does this correctly.
+	* src/symlist.h (symbol_list.midrule_parent_rule,
+	symbol_list.midrule_parent_rhs_index): New members so that midrules can
+	remember their relationships with their parents.
+	* tests/input.at (Type Clashes): Extend to catch the midrule $$ error
+	fixed by the above patch.
+	(_AT_UNUSED_VALUES_DECLARATIONS, AT_CHECK_UNUSED_VALUES): New m4 macros
+	implementing...
+	(Unused values): ... this old test case and...
+	(Unused values before symbol declarations): ... this new test case.
+	This one is the same as `Unused values' except that all symbol
+	declarations appear after the rules in order to catch the rest of the
+	errors fixed by the above patch.
+
+2006-06-26  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	More cleanup.
+	* src/reader.c (current_rule): Declare it static since it's no longer
+	used outside this file.
+	(grammar_current_rule_action_append): Remove redundant arguments from
+	translate_rule_action invocation.
+	* src/reader.h (current_rule): Remove this unused extern.
+	* src/scan-code.h (translate_rule_action): Remove redundant arguments.
+	* src/scan-code.l (translate_rule_action): Likewise.
+
+2006-06-25  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Clean up yesterday's patch.
+	* parse-gram.y (rhs): Move grammar_midrule_action invocation from here
+	to...
+	* src/reader.c (grammar_current_rule_action_append): ... here for
+	consistency with grammar_current_rule_symbol_append.
+	* tests/regression.at (Braced code in declaration in rules section):
+	Make yyerror and yylex static as usual.
+
+2006-06-24  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Fix bug that mistakes braced code in a declaration in the rules section
+	to be a rule action.  Mentioned at
+	<http://lists.gnu.org/archive/html/bison-patches/2006-06/msg00105.html>.
+	* src/scan-gram.l: Move midrule action detection from the start of the
+	scanning of any braced code to...
+	* src/parse-gram.y (rhs): ... the parsing of braced code as a rule
+	action.  For readability, use $2 and @2 rather than the equivalent
+	global variables.
+	* tests/regression.at (Braced code in declaration in rules section):
+	New test to catch the error fixed by the above patch.
+
+	Work on code readability some.
+	* src/scan-code.l (current_rule): Get rid of this misleading and
+	redundant declaration: it's actually extern'ed in reader.h.
+	(YY_DECL, code_lex, handle_action_dollar, handle_action_at,
+	translate_action): Add a rule argument and use it instead of the global
+	current_rule.
+	(translate_rule_action): This already receives current_rule through an
+	argument, so pass it on to translate_action instead of assigning
+	current_rule to current_rule.
+	(translate_symbol_action, translate_code): Pass rule = NULL to
+	translate_action.
+
+2006-06-23  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Rename %before-definitions to %start-header and %after-definitions to
+	%end-header.  Don't use these declarations to separate pre-prologue
+	blocks from post-prologue blocks.  Add new order-independent
+	declarations %before-header and %after-header as alternatives to the
+	traditional Yacc pre-prologue and post-prologue blocks.  Discussed at
+	<http://lists.gnu.org/archive/html/bison-patches/2006-06/msg00110.html>.
+	* NEWS (2.3+): Update for these changes.
+	* data/glr.c (b4_before_definitions): Update to...
+	(b4_start_header): ... this.
+	(b4_after_definitions): Update to...
+	(b4_end_header): ... this.
+	* data/glr.cc: Likewise.
+	* data/lalr1.cc: Likewise.
+	* data/yacc.c: Likewise.
+	* doc/bison.texinfo (The prologue): Update names, and replace remaining
+	prologue blocks with %*-header declarations.
+	(Calc++ Parser): Likewise.
+	(Decl Summary): Update names.
+	(Table of Symbols): Update description.
+	* src/parse-gram.y (PERCENT_AFTER_DEFINITIONS): Update to...
+	(PERCENT_END_HEADER): ... this.
+	(PERCENT_BEFORE_DEFINITIONS): Update to...
+	(PERCENT_START_HEADER): ... this.
+	(PERCENT_AFTER_HEADER, PERCENT_BEFORE_HEADER): New tokens.
+	(declaration): Update token names and m4 macro names.
+	When parsing %end-header and %start-header, invoke translate_code
+	before muscle_code_grow, and no longer set global booleans to remember
+	whether these declarations have been seen.
+	Parse new %after-header and %before-header.
+	* src/reader.c (before_definitions, after_definitions): Remove.
+	(prologue_augment): Accept a new bool argument to specify whether to
+	augment the pre-prologue or post-prologue.
+	* src/reader.h (before_definitions, after_definitions): Remove these
+	extern's.
+	(prologue_augment): Add new bool argument.
+	* src/scan-gram.l (PERCENT_AFTER_DEFINITIONS): Update to...
+	(PERCENT_END_HEADER): ... this.
+	(PERCENT_BEFORE_DEFINITIONS): Update to...
+	(PERCENT_START_HEADER): ... this.
+	(PERCENT_AFTER_HEADER, PERCENT_BEFORE_HEADER): New tokens.
+	* tests/actions.at (Printers and Destructors): Update names.
+
+2006-06-22  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Add comparison operators for C++ location classes.  Discussed at
+	<http://lists.gnu.org/archive/html/bison-patches/2006-06/msg00092.html>.
+	* data/c++.m4 (b4_define_location_comparison): New boolean %define
+	declaration indicating whether filename_type has an operator==.  If
+	filename_type is `std::string', it defaults to `1', `0' otherwise.
+	* data/location.cc: Iff b4_define_location_comparison is `1', add
+	operator== and operator!= for class position and for class location.
+
+	Some minor fixes.
+	* src/scan-action.l: Remove unused file.
+	* src/symtab.c (symbol_printer_set): Use printer_location not
+	destructor_location.
+	* src/symtab.h (struct symbol): Replace incorrect source comment for
+	printer members.
+	* tests/input.at (Incompatible Aliases): Update output with correct
+	printer location.
+
+2006-06-20  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Don't put the pre-prologue in the header file.  For the yacc.c code
+	file and the glr.c header and code files, move the pre-prologue before
+	the token definitions.  Add new %before-definitions and
+	%after-definitions to declare code that will go in both the header file
+	and code file.  Discussed at
+	<http://lists.gnu.org/archive/html/bison-patches/2005-12/msg00000.html>,
+	<http://lists.gnu.org/archive/html/bison-patches/2006-01/msg00016.html>,
+	and
+	<http://lists.gnu.org/archive/html/bison-patches/2006-06/msg00055.html>.
+	* NEWS (2.3+): Describe these changes.
+	* data/glr.c (b4_pre_prologue): Move from within to before...
+	(b4_shared_declarations): ... this.
+	Add new b4_before_definitions before b4_token_enums.
+	Add new b4_after_definitions at the end.
+	* data/glr.cc (b4_pre_prologue): Replace with...
+	(b4_before_definitions): ... this in the header file.
+	(b4_after_definitions): New near the end of the header file.
+	* data/lalr1.cc (b4_pre_prologue): Move from the header file to the
+	code file right before including the header file.
+	(b4_before_definitions): New in the previous position of
+	b4_pre_prologue in the header file.
+	(b4_after_definitions): New near the end of the header file.
+	* data/yacc.c: Clean up some m4 quoting especially in the header file.
+	(b4_token_enums_defines): In the code file, move to right before
+	YYSTYPE for consistency with the header file.
+	(b4_before_definitions): New right before b4_token_enums_defines in
+	both the header and code file.
+	(b4_after_definitions): New right after YYLTYPE and yylloc in both the
+	header and code file.
+	* doc/bison.texinfo (Prologue): Show use of %before-definitions instead
+	of prologues for %union dependencies.
+	(Decl Summary): In %defines description, mention the effect of
+	%before-definitions and %after-definitions on the header file.
+	(Calc++ Parser): Forward declare driver in a %before-definitions rather
+	than in the pre-prologue so that make check succeeds.
+	(Table of Symbols): Add entries for %before-definitions and
+	%after-definitions.
+	* src/parse-gram.y (PERCENT_BEFORE_DEFINITIONS): New token for
+	%before-definitions.
+	(PERCENT_AFTER_DEFINITIONS): New token for %after-definitions.
+	(declaration): Parse those declarations and append to
+	b4_before_definitions and b4_after_definitions, respectively.
+	* src/reader.c (before_definitions, after_definitions): New bools to
+	track whether those declarations have been seen.
+	(prologue_augment): Add to the post-prologue if %union,
+	%before-definitions, or %after-definitions has been seen.
+	* src/reader.h (before_definitions, after_definitions): New extern's.
+	* src/scan-gram.l: Scan the new declarations.
+	* tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Place the second
+	prologue block in a %before-definitions or a %after-definitions based
+	on whether the %union is declared.
+	* tests/regression.at (Early token definitions with --yacc, Early token
+	definitions without --yacc): Move tests for token definitions into the
+	post-prologue since token names are no longer defined in the
+	pre-prologue.
+
+2006-06-20  Akim Demaille  <akim@epita.fr>
+
+	* src/symtab.h, src/symtab.c (symbol_from_uniqstr): New.
+	(symbol_get): Use it.
+	* src/parse-gram.y: Use it.
+
+2006-06-19  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* src/scan-gram.l: Remove unused declaration of last_string_1 so the
+	build succeeds when configured with --enable-gcc-warnings.
+
+2006-06-19  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* src/parse-gram.y (char_name): New function.
+	(CHAR, STRING, string_content): For %printer, properly escape.
+	(ID): Prefer fputs to fprintf.
+	(id): Reindent to be consistent with other rules.
+	Properly quote char.
+
+	The Translation Project changed its way of publishing translations
+	to maintainers.  I haven't received any responses to my request
+	for supporting the old way, or for documenting the new way.  I
+	have modified 'bootstrap' to use screen scraping
+	(in this case, HTML scraping).  This is unreliable and inelegant,
+	but I don't see any better way.  Yuck.
+	* bootstrap (TP_URL, WGET_COMMAND): New vars.
+	(get_translations): New function, which uses HTML scraping to
+	deduce locations of latest translations.
+	Use this function to grab both bison and bison-runtime .po files.
+	Don't bother priming the pump for the runtime-po domain any more,
+	as it's now translated better than bison is.
+
+2006-06-19  Akim Demaille  <akim@epita.fr>
+
+	* src/scan-gram.l: No longer "parse" things after `%union' until
+	`{'.  Rather, return a single "%union" token.
+	No longer make symbols: return strings, and leave the conversion
+	to symbols to the parser.
+	(SC_PRE_CODE, token_type): Remove.
+	* src/parse-gram.y (%union): New field `character'.
+	Sort tokens.
+	(CHAR): New token.
+	(ID, ID_COLON): Now that the scanner no longer makes them
+	identifiers, adjust all uses to invoke symbol_get.
+	(id_colon): New, wraps the conversion from string to symbol.
+	(%union): Accept a possible union_name.
+	(symbol): Now can be a char.
+	* data/c.m4 (b4_union_name): Leave a default value.
+	* data/glr.c, data/yacc.c: Use it.
+
+2006-06-11  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	For associating token numbers with token names for "yacc.c", don't use
+	#define statements unless `--yacc' is specified; always use enum
+	yytokentype.  Most important discussions start at:
+	<http://lists.gnu.org/archive/html/bison-patches/2005-09/msg00053.html>,
+	<http://lists.gnu.org/archive/html/bison-patches/2005-12/msg00052.html>,
+	and
+	<http://lists.gnu.org/archive/html/bison-patches/2006-06/msg00043.html>.
+	* NEWS (2.3+): Mention.
+	* data/c.m4 (b4_yacc_if): New.
+	(b4_token_enums_defines): Use b4_yacc_if to decide whether to add the
+	token #define's.
+	* doc/bison.texinfo (Bison Options): Describe the effect of `--yacc'
+	on token name definitions.
+	* src/getargs.c (usage): Capitalize `Yacc' in English.
+	* src/output.c (prepare): Define b4_yacc_flag.
+	* tests/regression.at (Early token definitions): Test that tokens names
+	are defined before the pre-prologue not just before the post-prologue.
+	Remove this test case and copy to...
+	(Early token definitions with --yacc): ... this to test #define's.
+	(Early token definitions without --yacc): ... and this to test enums.
+
+2006-06-11  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* NEWS: Reword the post-2.3 change to not be so optimistic about
+	removing the old "look-ahead" spelling.
+	Update previous look-ahead/lookahead change reports.
+	* REFERENCES: look-ahead -> lookahead (since that's
+	what he actually wrote).
+	* doc/refcard.tex: look ahead -> lookahead,
+	look-ahead -> lookahead
+
+2006-06-09  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	For consistency, use `lookahead' instead of `look-ahead' or
+	`look_ahead'.  Discussed starting at
+	<http://lists.gnu.org/archive/html/bison-patches/2006-01/msg00049.html>
+	and then at
+	<http://lists.gnu.org/archive/html/bison-patches/2006-06/msg00017.html>.
+	* NEWS: For the next release, note the change to `--report'.
+	* TODO, doc/bison.1: Update English.
+	* doc/bison.texinfo: Update English.
+	(Understanding Your Parser, Bison Options): Document as
+	`--report=lookahead' rather than `--report=look-ahead'.
+	* src/conflicts.c: Update English in comments.
+	(lookahead_set): Rename from look_ahead_set.
+	(flush_reduce): Rename argument look_ahead_tokens to lookahead_tokens.
+	(resolve_sr_conflict): Rename local look_ahead_tokens to
+	lookahead_tokens, and update other uses.
+	(flush_shift, set_conflicts, conflicts_solve, count_sr_conflicts,
+	count_rr_conflicts, conflicts_free): Update uses.
+	* src/getargs.c (report_args): Move "lookahead" before alternate
+	spellings.
+	(report_types): Update uses.
+	(usage): For `--report' usage description, state `lookahead' spelling
+	rather than `look-ahead'.
+	* src/getargs.h (report.report_lookahead_tokens): Rename from
+	report_look_ahead_tokens.
+	* src/lalr.c: Update English in comments.
+	(compute_lookahead_tokens): Rename from compute_look_ahead_tokens.
+	(state_lookahead_tokens_count): Rename from
+	state_look_ahead_tokens_count.
+	Rename local n_look_ahead_tokens to n_lookahead_tokens.
+	(lookahead_tokens_print): Rename from look_ahead_tokens_print.
+	Rename local n_look_ahead_tokens to n_lookahead_tokens.
+	Update other uses.
+	Update English in output.
+	(add_lookback_edge, initialize_LA, lalr, lalr_free): Update uses.
+	* src/print.c: Update English in comments.
+	(lookahead_set): Rename from look_ahead_set.
+	(print_reduction): Rename argument lookahead_token from
+	look_ahead_token.
+	(print_core, state_default_rule, print_reductions, print_results):
+	Update uses.
+	* src/print_graph.c: Update English in comments.
+	(print_core): Update uses.
+	* src/state.c: Update English in comments.
+	(reductions_new): Update uses.
+	(state_rule_lookahead_tokens_print): Rename from
+	state_rule_look_ahead_tokens_print, and update other uses.
+	* src/state.h: Update English in comments.
+	(reductions.lookahead_tokens): Rename from look_ahead_tokens.
+	(state_rule_lookahead_tokens_print): Rename from
+	state_rule_look_ahead_tokens_print.
+	* src/tables.c: Update English in comments.
+	(conflict_row, action_row): Update uses.
+	* tests/glr-regression.at
+	(Incorrect lookahead during deterministic GLR,
+	Incorrect lookahead during nondeterministic GLR): Rename
+	print_look_ahead to print_lookahead.
+	* tests/torture.at: Update English in comments.
+	(AT_DATA_LOOKAHEAD_TOKENS_GRAMMAR): Rename from
+	AT_DATA_LOOK_AHEAD_TOKENS_GRAMMAR.
+	(Many lookahead tokens): Update uses.
+	* data/glr.c: Update English in comments.
+	* lalr1.cc: Likewise.
+	* yacc.c: Likewise.
+	* src/conflicts.h: Likewise.
+	* src/lalr.h: Likewise.
+	* src/main.c: Likewise.
+	* src/output.c: Likewise.
+	* src/parse-gram.c: Likewise.
+	* src/tables.h: Likewise.
+	* tests/calc.at: Likewise.
+
+2006-06-08  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* src/flex-scanner.h (yytext): Remove stray `*/' in #define.
+
+2006-06-07  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* TODO: Add request from Nelson H. F. Beebe to be able to install
+	Bison without installing the yacc script.
+
+2006-06-07  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* src/flex-scanner.h: For the sake of Flex 2.5.4, don't #define yyleng
+	and yytext if they're already #define'd.
+	* src/flex-scanner.h, src/location.h: Move #include "system.h" to...
+	* src/scan-code-c.c: ... here.
+	* src/scan-code.l, src/scan-gram.l: ... and here.  Also #include
+	<config.h>.
+
+2006-06-07  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Get Bison to build again when configured with --enable-gcc-warnings.
+	* src/location.c, src/location.h, src/main.c, src/scan-code.l: Add some
+	missing #include's.
+	* src/scan-code.l (handle_action_dollar, handle_action_at): Rename
+	loc argument as it shadows a global.
+	* src/scan-gram.l: Remove stray comma that prevents boundary_set
+	invocation.
+
+	* src/.cvsignore: Add scan-code.c.
+
+2006-06-07  Akim Demaille  <akim@epita.fr>
+
+	* src/scan-gram.l: Move the "add a trailing ; to actions" code
+	to...
+	* src/scan-code.l: here.
+	* tests/input.at (Torturing the Scanner): Fix another location
+	error.
+
+2006-06-07  Akim Demaille  <akim@epita.fr>
+
+	* src/Makefile.am (BUILT_SOURCES): Fix the trailing backslash.
+
+2006-06-06  Akim Demaille  <akim@epita.fr>
+
+	Extract the parsing of user actions from the grammar scanner.
+	As a consequence, the relation between the grammar scanner and
+	parser is much simpler.  We can also split "composite tokens" back
+	into simple tokens.
+	* src/gram.h (ITEM_NUMBER_MAX, RULE_NUMBER_MAX): New.
+	* src/scan-gram.l (add_column_width, adjust_location): Move to and
+	rename as...
+	* src/location.h, src/location.c (add_column_width)
+	(location_compute): these.
+	Fix the column count: the initial column is 0.
+	(location_print): Be robust to ending column being 0.
+	* src/location.h (boundary_set): New.
+	* src/main.c: Adjust to scanner_free being renamed as
+	gram_scanner_free.
+	* src/output.c: Include scan-code.h.
+	* src/parse-gram.y: Include scan-gram.h and scan-code.h.
+	Use boundary_set.
+	(PERCENT_DESTRUCTOR, PERCENT_PRINTER, PERCENT_INITIAL_ACTION)
+	(PERCENT_LEX_PARAM, PERCENT_PARSE_PARAM): Remove the {...} part,
+	which is now, again, a separate token.
+	Adjust all dependencies.
+	Wherever actions with $ and @ are used, use translate_code.
+	(action): Remove this nonterminal which is now useless.
+	* src/reader.c: Include assert.h, scan-gram.h and scan-code.h.
+	(grammar_current_rule_action_append): Use translate_code.
+	(packgram): Bound check ruleno, itemno, and rule_length.
+	* src/reader.h (gram_in, gram__flex_debug, scanner_cursor)
+	(last_string, last_braced_code_loc, max_left_semantic_context)
+	(scanner_initialize, scanner_free, scanner_last_string_free)
+	(gram_out, gram_lineno, YY_DECL_): Move to...
+	* src/scan-gram.h: this new file.
+	(YY_DECL): Rename as...
+	(GRAM_DECL): this.
+	* src/scan-code.h, src/scan-code.l, src/scan-code-c.c: New.
+	* src/scan-gram.l (gram_get_lineno, gram_get_in, gram_get_out):
+	(gram_get_leng, gram_get_text, gram_set_lineno, gram_set_in):
+	(gram_set_out, gram_get_debug, gram_set_debug, gram_lex_destroy):
+	Move these declarations, and...
+	(obstack_for_string, STRING_GROW, STRING_FINISH, STRING_FREE):
+	these to...
+	* src/flex-scanner.h: this new file.
+	* src/scan-gram.l (rule_length, rule_length_overflow)
+	(increment_rule_length): Remove.
+	(last_braced_code_loc): Rename as...
+	(gram_last_braced_code_loc): this.
+	Adjust to the changes of the parser.
+	Move all the handling of $ and @ into...
+	* src/scan-code.l: here.
+	* src/scan-gram.l (handle_dollar, handle_at): Remove.
+	(handle_action_dollar, handle_action_at): Move to...
+	* src/scan-code.l: here.
+	* src/Makefile.am (bison_SOURCES): Add flex-scanner.h,
+	scan-code.h, scan-code-c.c, scan-gram.h.
+	(EXTRA_bison_SOURCES): Add scan-code.l.
+	(BUILT_SOURCES): Add scan-code.c.
+	(yacc): Be robust to white spaces.
+
+	* tests/conflicts.at, tests/input.at, tests/reduce.at,
+	* tests/regression.at: Adjust the column numbers.
+	* tests/regression.at: Adjust the error message.
+
+2006-06-06  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* src/getargs.c (usage): Mention GLR not just LALR(1) in --help output.
+	Use Akim's wording from
+	<http://lists.gnu.org/archive/html/bison-patches/2006-05/msg00056.html>.
+
+2006-06-06  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Between Bison releases, manually append `+' to the previous Bison
+	release number, and use that as a signal to automatically print the
+	ChangeLog's CVS Id keyword from --version.  Discussed starting at
+	<http://lists.gnu.org/archive/html/bison-patches/2006-05/msg00028.html>.
+	* ChangeLog: Add Id header.
+	* configure.ac (AC_INIT): Append `+' to `2.3'.
+	* src/.cvsignore: Add revision.c.
+	* src/Makefile.am (bison_SOURCES): Add revision.c and revision.h.
+	(BUILT_SOURCES): Add revision.c.
+	(revision.c): New target rule.  This file defines a new global variable
+	named revision.  It initializes it with either the Id from ChangeLog
+	or, if VERSION doesn't contain `+', with the empty string.
+	* src/getargs.c (version): Print the value of revision.
+	* src/revision.h: Extern revision.
+
+2006-06-05  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* NEWS: Version 2.3.
+	* configure.ac (AC_INIT): Likewise.
+
+2006-05-30  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/glr.c (YYRECOVERING): Define to be a function-like macro
+	with no arguments, not as an object-like macro.  This is for
+	compatibility with data/yacc.c.  Problem reported by John P. Hartmann in
+	<http://lists.gnu.org/archive/html/bug-bison/2006-05/msg00059.html>.
+	* doc/bison.texinfo (Action Features, Error Recovery, Table of Symbols):
+	Document this.
+
+2006-05-30  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* src/getargs.c (usage): Back out yesterday's modification of the
+	--help output so that we don't have to wait for translation before
+	releasing 2.3.
+
+2006-05-29  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* doc/bison.texinfo (Introduction): Don't say "GLR grammar".
+	Problem reported by Akim Demaille.
+
+2006-05-29  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* src/getargs.c (usage): Mention GLR not just LALR(1) in --help output.
+
+2006-05-26  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/yacc.c (yy_reduce_print): Omit trailing white space in
+	generated source code.  Problem reported by Frans Englich in
+	<http://lists.gnu.org/archive/html/bug-bison/2006-05/msg00049.html>.
+
+2006-05-22  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* Makefile.maint (gzip_rsyncable, GZIP_ENV): Compute within the
+	shell, not within 'make', so that 'make' by an ordinary builder
+	(using GNU make) does not worry about configuring gzip.  This also
+	works around a bug reported independently by Keith Thompson and by
+	Georg Schwarz, whereby gzip 1.2.4 --help would output usage on
+	stderr rather than stdout, messing up the build logs.
+
+2006-05-21  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* data/yacc.c (yyparse): Wrap the final return from yyparse inside YYID
+	to make sure that YYID will never be unused.  This fixes a 'make
+	maintainer-check' failure caused by the recent changes to the 'Trivial
+	grammars' test case, which caused g++ 4.1.0 to complain that YYID was
+	not used.
+	* data/glr.c (yyparse): Wrap yyparse's return inside YYID just in case.
+
+2006-05-21  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* data/glr.c (yyresolveLocations): Remove bogus YYASSERT that the
+	state before an empty RHS is always resolved here.  Only the location
+	of that state is guaranteed to be resolved, and that's enough.  This
+	fixes the remaining bug reported by Derek M. Jones in
+	<http://lists.gnu.org/archive/html/bug-bison/2006-05/msg00027.html>.
+	* tests/glr-regression.at (Uninitialized location when reporting
+	ambiguity): Test the above case.
+	Also, the embedded comments in this test case claim it checks the case
+	of an empty RHS that has inherited the initial location.  However, the
+	corresponding LHS was already resolved, so yyresolveLocations didn't
+	actually have reason to modify it.  Fix this by forcing
+	nondeterministic operation at the beginning of the parse.
+
+2006-05-20  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/c.m4 (b4_yy_symbol_print_generate):
+	(b4_yy_symbol_print_generate): Use 'YYSTYPE const' rather than
+	'const YYSTYPE', and similarly for YYLTYPE.  This fixes one
+	of the bugs reported today by Derek M Jones in
+	<http://lists.gnu.org/archive/html/bug-bison/2006-05/msg00027.html>.
+	* doc/bison.texinfo (Value Type): Document that YYSTYPE must be
+	defined to be a type name without parens or brackets.
+	(Location Type): Similarly for YYLTYPE.
+	* tests/regression.at (Trivial grammars): Put in a test for this
+	bug that will be caught by 'make maintainer-check' (though not,
+	alas, by 'make check' unless your compiler is picky).
+
+2006-05-19  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* NEWS: Version 2.2.
+	* configure.ac (AC_INIT): Likewise.
+
+2006-05-17  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* data/glr.c (yyreportTree): Make room in yystates for the state
+	preceding the RHS.  This fixes the segmentation fault reported by Derek
+	M. Jones in
+	<http://lists.gnu.org/archive/html/help-bison/2006-05/msg00035.html>.
+	(yyreportTree, yypdumpstack): Subtract 1 from yyrule before printing
+	to the user.  Reported for yyreportTree by Derek M. Jones later in the
+	same thread.
+	* THANKS: Add Derek M. Jones.
+	Update my email address.
+	Fix typo in Steve Murphy's name.
+
+2006-05-14  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/glr.c (yyreportSyntaxError): Fix off-by-one error in
+	checking against YYLAST that caused the parser to miss a potential
+	alternative in its diagnostic.
+	Problem reported by Maria Jose Moron Fernandez in
+	<http://lists.gnu.org/archive/html/bug-bison/2006-05/msg00024.html>.
+	* data/lalr1.cc (yysyntax_error_): Likewise.
+	* data/yacc.c (yysyntax_error): Likewise.
+	* tests/regression.at (_AT_DATA_DANCER_Y): Use static array for
+	tokens, in case we run into an older C compiler.
+	(_AT_DATA_EXPECT2_Y, AT_CHECK_EXPECT2): New macros.
+	Use them to check for the off-by-one error fixed above.
+
+	* data/yacc.c (yytnamerr): Fix typo: local var should be of type
+	YYSIZE_T, not size_t.
+	* tests/regression.at (Trivial grammars): New test, to catch
+	the error fixed by the above patch.
+
+2006-05-14  Akim Demaille  <akim@lrde.epita.fr>
+
+	* doc/bison.texinfo (C++ Bison Interface): Clarify the naming
+	scheme.
+	Reported by Steve Murphy.
+
+2006-05-14  Akim Demaille  <akim@lrde.epita.fr>
+
+	* data/glr.cc, data/lalr1.cc: Using %defines is mandatory.
+	* data/glr.cc: b4_location_flag is now b4_locations_flag.
+
+2006-05-14  Akim Demaille  <akim@lrde.epita.fr>
+
+	Implement --trace=m4.
+	* src/getargs.c (trace_types, trace_args): Accept trace_m4.
+	* src/output.c (output_skeleton): When set, pass -dV to m4.
+
+	Factor the handling of flags in m4.
+	* src/output.c (prepare): Rename the muscle names debug, defines,
+	error_verbose to debug_flag, defines_flag, error_verbose_flag.
+	* data/c.m4: Adjust.
+	(_b4_define_flag_if, b4_define_flag_if, b4_defines_if): New.
+	Use b4_define_flag_if to define other b4_FLAG_if macros.
+	(b4_location_if): As a consequence, rename as...
+	(b4_locations_if): this, for consistency.
+	Adjust all the skeletons.
+
+2006-05-14  Akim Demaille  <akim@lrde.epita.fr>
+
+	* etc/bench.pm: Shorten bench names.
+
+2006-05-14  Akim Demaille  <akim@lrde.epita.fr>
+
+	* src/output.h, src/output.c (error_verbose): Move to...
+	* src/getargs.h, src/getargs.c: here.
+	Sort the flags.
+	Adjust dependencies.
+
+2006-05-13  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/c.m4 (b4_copyright): Put the special exception for Bison
+	skeletons here, so we don't have to put it in each skeleton.  All
+	uses changed.  Suggested by Akim Demaille.  Also, wrap the
+	copyright notice, in case it is longer than 80 columns.  Replace
+	comma by newline after title.
+
+2006-05-11  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* doc/bison.texinfo (Calc++ Scanner): The flex behavior is an
+	incompatibility, not a bug.  Mention that it wasn't fixed as of
+	flex 2.5.33.
+
+2006-05-11  Akim Demaille  <akim@lrde.epita.fr>
+
+	* examples/extexi: Enforce the precedence of concatenation over
+	>>.
+	Reported by Tommy Nordgren.
+
+2006-05-11  Akim Demaille  <akim@lrde.epita.fr>
+
+	* data/lalr1.cc (yytranslate_): Rename token as t to avoid clashes
+	with the member "token".
+	Reported by Martin Nylin.
+
+2006-05-08  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/glr.c: Switch to Bison 2.2 special-exception language in
+	the copyright notice.  Use more-regular format for titles and
+	copyright notices.
+	* data/glr.cc: Likewise.
+	* data/location.cc: Likewise.
+	* data/yacc.cc: Likewise.
+	* doc/bison.texinfo (Conditions): Document this.
+	* NEWS: likewise.  Upgrade version to 2.2.
+
+2006-04-27  Akim Demaille  <akim@lrde.epita.fr>
+
+	* data/glr.cc: Remove dead code.
+
+2006-04-25  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* bootstrap: Comment out the AM_CPPFLAGS line, since we don't use
+	that variable and the line breaks the bootstrap.  Problem reported
+	by Juan M. Guerrero.
+
+2006-04-24  Akim Demaille  <akim@lrde.epita.fr>
+
+	* doc/bison.texinfo (Multiple start-symbols): New.
+
+2006-04-24  Akim Demaille  <akim@lrde.epita.fr>
+
+	* etc/README, etc/bench.pl: New.
+
+2006-04-03  Akim Demaille  <akim@lrde.epita.fr>
+
+	* src/scan-gram.l: Be robust to BRACED_CODE appearing before any
+	rule.
+	Reported by Mickael Labau.
+	* tests/input.at (Torturing the Scanner): Test it.
+
+2006-03-16  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* doc/bison.texinfo (Decl Summary): Don't mention yylloc twice.
+	Problem reported by Bob Rossi.
+
+2006-03-13  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* doc/bison.texinfo: Remove @shorttitlepage stuff; it wasn't used
+	and didn't really work.
+	For the index, use @ifnotinfo, not @iftex.
+	Minor cleanups of spacing and terminology.
+
+2006-03-12  Akim Demaille  <akim@lrde.epita.fr>
+
+	* tests/local.at (_AT_BISON_OPTION_PUSHDEFS): Fix the definition
+	of AT_NAME_PREFIX when %name-prefix is not used.
+
+2006-03-12  Akim Demaille  <akim@lrde.epita.fr>
+
+	Apply --prefix to C++ skeletons too: they change the namespace.
+	The test suite already exercize these cases.
+	* data/c++.m4 (b4_namespace): New.
+	* data/lalr1.cc, data/glr.cc, data/location.cc: Use it instead of `yy'.
+	* data/lalr1.cc (yytnameerr_): Move its definition into the namespace.
+	* data/yacc.c, data/glr.c: Remove a useless `[]'.
+	* doc/bison.texinfo: Document it.
+	(Option Cross Key): Use @multitable in all formats.  It looks
+	nicer, even in TeX outputs.
+	(Rules): Use the same code whatever the output type is.
+	* tests/local.at (_AT_BISON_OPTION_PUSHDEFS)
+	(_AT_BISON_OPTION_POPDEFS): Support AT_NAME_PREFIX.
+	* tests/calc.at: Use it, instead of hard coding `yy'.
+
+2006-03-10  Akim Demaille  <akim@lrde.epita.fr>
+
+	* TODO: Remove dead items.
+
+2006-03-10  Akim Demaille  <akim@lrde.epita.fr>
+
+	* doc/FAQ: Remove, merged into...
+	* doc/bison.texinfo (FAQ): this.
+	* doc/Makefile.am (EXTRA_DIST): Adjust.
+
+2006-03-10  Akim Demaille  <akim@lrde.epita.fr>
+
+	* data/c.m4 (b4_token_enum): Always define the enum of tokens,
+	even if empty.
+	* data/lalrl1.cc, data/glr.cc (parser::token_type): New.
+	* doc/bison.texinfo (Calc++ Scanner): Use it.
+
+2006-03-09  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Fix two nits reported by twlevo, plus one more that I discovered.
+
+	* src/assoc.h (assoc_to_string): Give a name to the arg, as
+	this is the usual Bison style.
+	* src/location.h (location_print): Likewise.
+
+	* src/reader.h (token_name): Likewise.
+
+2006-03-08  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Fix some nits reported by twlevo.
+	* doc/FAQ: Remove ancient Y2K FAQ, replacing it with "secure"
+	and "POSIX".  Use more-modern syntax for URLs.  Mention C++
+	and ask for Java.  Don't hardwire OS version numbers.  Add
+	copyright notice.
+	* m4/.cvsignore: Add unistd_h.m4, for latest gnulib.
+	* src/conflicts.c (solved_conflicts_obstack): Now static.
+
+2006-03-08  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* doc/bison.texinfo (Introduction): Mention GLR and C++ as on the web
+	page.  Say "you can use it" not "you may use it" as on the web page;
+	we're describing capabilities not granting permission.
+
+2006-03-06  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/glr.c (yyresolveLocations): Rename local variables to avoid
+	shadowing warnings.  Use usual patter for iterating through RHS.
+	* tests/glr-regression.at
+	(Uninitialized location when reporting ambiguity):
+	Modify yylex so that it uses its argument, rather than trying
+	to rely on ARGSUSED (which doesn't work for gcc with warnings).
+	const char -> char const.
+
+	* tests/Makefile.am ($(srcdir)/package.m4, maintainer-check-valgrind):
+	Don't use tabs inside commands; it messes up 'ps'.
+	Problem reported by twlevo.
+
+2006-03-06  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* tests/glr-regression.at (Uninitialized location when reporting
+	ambiguity): New test case.
+	* data/glr.c (yyresolveLocations): New function, which uses
+	YYLLOC_DEFAULT.
+	(yyresolveValue): Invoke yyresolveLocations before reporting an
+	ambiguity.
+	* doc/bison.texinfo (Default Action for Locations): Note
+	YYLLOC_DEFAULT's usage for ambiguity locations.
+	(GLR Semantic Actions): Cross-reference those notes.
+
+2006-03-04  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* tests/glr-regression.at (Leaked semantic values when reporting
+	ambiguity): Remove unnecessary union and type declarations.
+	(Leaked lookahead after nondeterministic parse syntax error): New test
+	case.
+	* data/glr.c (yyparse): Check for zero stacks remaining before
+	attempting to shift the lookahead so that you don't lose it.
+
+2006-03-02  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Avoid memory leaks by not invoking longjmp in yyreportAmbiguity.
+	* tests/glr-regression.at (Leaked semantic values when reporting
+	ambiguity): New test case.
+	* data/glr.c (yyreportAmbiguity): Invoke yyyerror directly and return
+	yyabort rather than invoking yyFail, which invokes longjmp.  Remove the
+	now unnecessary yystackp parameter.
+	(yyresolveValue): Return yyreportAmbiguity's result.  Now the necessary
+	destructors can be called.
+
+	* tests/glr-regression.at: Don't invoke bison with `-t' unnecessarily
+	in existing testcases.
+
+2006-03-02  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Don't leak semantic values for parent RHS when a user action cuts the
+	parser, and clean up related code a bit.
+	* tests/glr-regression.at (Leaked merged semantic value if user action
+	cuts parse): Rename to...
+	(Leaked semantic values if user action cuts parse): ... this.  Add check
+	for leaked parent RHS values.
+	* data/glr.c (yydestroyGLRState): In debugging output, distinguish
+	between an unresolved state (non-empty chain of semantic options) and
+	an incomplete one (signaled by an empty chain).
+	(yyresolveStates): Document the interface.  Move all manipulation of a
+	successfully or unsuccessfully resolved yyGLRState to...
+	(yyresolveValue): ... here so that yyresolveValue always leaves a
+	yyGLRState with consistent data and thus is easier to understand.
+	Remove the yyvalp and yylocp parameters since they are always just
+	taken from the yys parameter.  When reporting a discarded merged value
+	in debugging output, note that it is incompletely merged.  Document the
+	interface.
+	(yyresolveAction): If resolving any of the RHS states fails, destroy
+	them all rather than leaking them.  Thus, as long as user actions are
+	written to clean up the RHS correctly, yyresolveAction always cleans up
+	the RHS of a semantic option.  Document the interface.
+
+2006-02-27  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/glr.c (yyexpandGLRStack): Catch an off-by-one error that
+	led to a segmentation fault in GNU Pascal.  Problem reported
+	by Waldek Hebisch.
+
+2006-02-21  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* doc/bison.texinfo (Mid-Rule Actions): Explain how to bury a
+	mid-rule action inside a nonterminal symbol in order to declare a
+	destructor for its semantic value.
+
+2006-02-16  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/yacc.c [(! defined yyoverflow || YYERROR_VERBOSE) && !
+	YYSTACK_USE_ALLOCA && ! defined YYSTACK_ALLOC && defined
+	__cplusplus && ! defined _STDLIB_H && !
+	((defined YYMALLOC || defined malloc) && (defined YYFREE ||
+	defined free))]: Include <stdlib.h> rather than rolling our own
+	declarations of malloc and free, to avoid problems with
+	incompatible declarations (using 'throw') C++'s stdlib.h.  This
+	should fix Debian bug 340012
+	<http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=340012>,
+	reported by Guillaume Melquiond.
+
+2006-02-13  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* NEWS: Clarify symbols versus types in unused-value warnings.
+
+	* configure.ac (AC_INIT): Bump version number.
+
+2006-02-13  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* NEWS: Version 2.1a.
+	* tests/headers.at (AT_TEST_CPP_GUARD_H): Declare yyerror and yylex,
+	since C99 requires this.
+
+2006-02-11  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* m4/c-working.m4: New file.
+	* configure.ac (BISON_TEST_FOR_WORKING_C_COMPILER): Use it.
+
+2006-02-10  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* Makefile.maint: Merge from coreutils.
+
+2006-02-09  Paul Eggert  <eggert@cs.ucla.edu>
+
+	More portability fixes for problems summarized by Nelson H. F. Beebe.
+
+	* m4/cxx.m4 (BISON_TEST_FOR_WORKING_CXX_COMPILER): Catch a
+	configuration screwup "./configure CC=/opt/SUNWspro/bin/c89
+	CFLAGS="-xarch=generic64" CXX=/opt/SUNWspro/bin/CC
+	LDFLAGS="-xarch=generic64" with Sun C 5.7 on Solaris 10; this
+	messes up because C++ code is compiled in 32-bit mode but linked
+	in 64-bit mode.
+
+2006-02-08  Paul Eggert  <eggert@cs.ucla.edu>
+
+	More portability fixes for problems summarized by Nelson H. F. Beebe.
+
+	* doc/bison.texinfo (Calc++ Scanner): Work around a bug in flex
+	2.5.31.  This resembles the 2005-10-10 patch to src/scan-skel.l.
+
+	* examples/calc++/Makefile.am (check_PROGRAMS): Renamed from
+	nodist_PROGRAMS, since we don't need to actually compile the
+	example if we're just doing a plain 'make'.  This avoids bothering
+	the installer unnecessarily about problems due to weird C++
+	compilers.
+
+2006-02-06  Paul Eggert  <eggert@cs.ucla.edu>
+
+	More portability fixes for problems summarized by Nelson H. F. Beebe.
+
+	* tests/headers.at (AT_TEST_CPP_GUARD_H): Use #include <...> rather
+	than #include "...", and compile with -I'.'.  The old method was
+	not portable, according to Posix and the C standard, and it does
+	not work with Sun C 5.7, where previous #line directives affect
+	the working directory used in later #include "..." directives.
+
+2006-02-06  Juan Manuel Guerrero  <juan.guerrero@gmx.de>
+
+	Various DJGGP specific issues in /djgpp
+
+2006-02-02  Paul Eggert  <eggert@cs.ucla.edu>
+
+	More portability fixes for problems summarized by Nelson H. F. Beebe.
+
+	* m4/cxx.m4 (BISON_TEST_FOR_WORKING_CXX_COMPILER): Check that
+	'#include <map>' works and that you can apply ++ to iterators.
+
+2006-02-01  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Work around portability problems summarized by Nelson H. F. Beebe in
+	<http://lists.gnu.org/archive/html/bug-bison/2005-09/msg00021.html>.
+
+	* m4/cxx.m4 (BISON_TEST_FOR_WORKING_CXX_COMPILER): Check
+	that '#include <string>' works.
+
+	* data/lalr1.cc (yytranslate_): No longer inline, to work around a
+	porting problem to g++ 3.4.3 on Darwin 7.9.0, where g++ complained
+	"warning: sorry: semantics of inline function static data `const
+	unsigned char translate_table[262]' are wrong (you'll wind up with
+	multiple copies)".
+
+	* lib/bbitset.h (struct bitset_vtable): Rename members not, and,
+	or, xor to not_, and_, or_, and xor_, respectively.  This works
+	around a bug in GCC 3.4.3 on Irix 6.5, which apparently has a
+	random system header somewhere that includes the equivalent of
+	<iso646.h>.
+
+	* tests/headers.at (AT_TEST_CPP_GUARD_H): Don't assume that "$CC
+	-E" works; it apparently doesn't work with PathScale EKO Compiler
+	Suite Version 2.0.
+
+2006-01-30  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	During deterministic GLR operation, user actions should be able to
+	influence the parse by changing yychar.  To make this easier to fix and
+	to make glr.c easier to evolve in general, don't maintain yytoken in
+	parallel with yychar; just compute yytoken when needed.
+	* tests/glr-regression.at (Incorrect lookahead during deterministic
+	GLR): Check that setting yychar in a user action has the intended
+	effect.
+	* data/glr.c (yyGLRStack): Remove yytokenp member.
+	(yyclearin): Don't set *yytokenp.
+	(yyprocessOneStack, yyreportSyntaxError, yyrecoverSyntaxError): Examine
+	yychar rather than *yytokenp to determine the current lookahead.
+	Compute yytoken locally when needed.
+	(yyparse): Likewise.  Remove the local yytoken that yytokenp used to
+	point to.
+
+	* doc/bison.texinfo (Bison Options): Remove stray sentence fragment
+	after `--report' documentation.
+
+2006-01-30  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* src/parse-gram.y (grammar_declaration): Location of printer
+	symbol is @1, not list->location.  Bug reported by twlevo.
+	* tests/input.at (Incompatible Aliases): Adjust to above change.
+
+2006-01-29  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* tests/input.at (AT_CHECK_UNUSED_VALUES): Remove.  Instead, do
+	all the test at once.  This makes the output easier to read in the
+	normal case.
+
+	Fix a longstanding bug uncovered by bro-0.9a9/src/parse.y, which I
+	got from <http://bro-ids.org/download.html>.  The bug is that
+	when two actions appeared in succession, the second one was
+	scanned before the first one was added to the grammar rule
+	as a midrule action.  Bison then output the incorrect warning
+	"parse.y:905.17-906.36: warning: unused value: $3".
+	* src/parse-gram.y (BRACED_CODE, action): These are no longer
+	associated with a value.
+	(rhs): Don't invoke grammar_current_rule_action_append.
+	(action): Invoke it here instead.
+	* src/reader.c (grammar_midrule_action): Now extern.
+	(grammar_current_rule_action_append): Don't invoke
+	grammar_midrule_action; that is now the scanner's job.
+	* src/reader.h (last_string, last_braced_code_loc):
+	(grammar_midrule_action): New decls.
+	* src/scan-gram.l (last_string): Now extern, sigh.
+	(last_braced_code_loc): New extern variable.
+	(<INITIAL>"{"): Invoke grammar_midrule_action if the current
+	rule already has an action.
+	(<SC_BRACED_CODE>"}"): Set last_braced_code_loc before returning.
+	* tests/input.at (AT_CHECK_UNUSED_VALUES):
+	Add some tests to check that the above changes fixed the bug.
+
+2006-01-27  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* src/reader.c (symbol_should_be_used): Renamed from symbol_typed_p.
+	All used changed.  Check whether the symbol has a destructor,
+	not whether it is typed.
+	* tests/input.at (AT_CHECK_UNUSED_VALUES): Add a destructor, so
+	that the values are still reported as unused.  All line numbers
+	adjusted.
+
+2006-01-23  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Work around a bug in bro 0.8, which underparenthesizes its
+	definition of YYLLOC_DEFAULT.
+	* data/glr.c: Change all uses of YYLLOC_DEFAULT to parenthesize
+	their arguments.
+	* data/lalr1.cc: Likewise.
+	* data/yacc.cc: Likewise.
+
+2006-01-22  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Work around a bug in Pike 7.0, and give the Pike folks a
+	better way to override the usual int widths.
+	* data/yacc.c (b4_int_type): Use yytype_uint8, etc., so that the
+	user can override the types.
+	(short): #undef, to work around a bug in Pike 7.0.
+	(yytype_uint8, yytype_int8, yytype_uint16, yytype_int16): New types.
+	(union yyalloc.yyss): Use yytype_int16 rather than short.
+	All uses changed.
+	(yysigned_char): Remove.
+	* src/parse-gram.y (YYTYPE_UINT8, YYTYPE_INT8, YYTYPE_UINT16):
+	(YYTYPE_INT16): New macros, to test the new facility in yacc.c.
+	* tests/regression.at (Web2c Actions): Adjust to above changes.
+
+	* src/reader.c (check_and_convert_grammar): New function.
+	(reader): Close the input file even if something went wrong during
+	parsing.  Minor file descriptor leak reported by twlevo.
+
+	* src/assoc.c (assoc_to_string): Use a default: abort (); case
+	to pacify gcc -Wswitch-default.
+	* src/scan-gram.l (adjust_location): Use a default: break; case
+	to pacify gcc -Wswitch-default.
+	* src/scan-skel.h (skel_get_lineno, skel_get_in, skel_get_out):
+	(skel_get_leng, skel_get_text, skel_set_lineno, skel_set_in):
+	(skel_set_out, skel_get_debug, skel_set_debug, skel_lex_destroy):
+	Move these decls to scan-skel.l, since they don't need to be
+	visible elsewhere.
+	* src/scan-skel.l: Accept the above decls.
+	(skel_lex): New decl, to pacify GCC when unpatched flex 2.5.31
+	is used.
+
+2006-01-21  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* Makefile.cfg (local-checks-to-skip): Add changelog-check,
+	since we don't want to insist on a version number at the start
+	of the changelog every time.
+	* Makefile.maint: Sync from coreutils a bit better.
+	(sc_trailing_blank): Renamed from sc_trailing_space.
+	All uses changed.
+	(sc_no_if_have_config_h, sc_require_config_h):
+	(sc_prohibit_assert_without_use): New rules.
+	(sc_obsolete_symbols): Don't catch Makefile.maint itself.
+	(sc_dd_max_sym_length): Fix leading spaces in rule.
+	(sc_system_h_headers): Prefix with @.
+	(sc_useless_cpp_parens, m4-check): Output line numbers.
+	(changelog-check): Allow version only in head.
+	* data/c.m4: Use "defined FOO" instead of "defined (FOO)", to
+	satisfy new Makefile.maint rule.
+	* data/glr.c: Likewise.
+	* data/glr.cc: Likewise.
+	* data/lalr1.cc: Likewise.
+	* data/yacc.c: Likewise.
+	* lib/ebitsetv.c: Likewise.
+	* lib/lbitset.c: Likewise.
+	* lib/subpipe.c: Likewise.
+	* lib/timevar.c: Likewise.
+	* src/system.h: Likewise.
+	* data/yacc.c (YYSTYPE): Don't generate trailing spaces in output.
+	* djgpp/Makefile.maint: Add copyright notice.
+	* djgpp/README.in: Likewise.
+	* djgpp/config.bat: Likewise.
+	* djgpp/config.site: Likewise.
+	* djgpp/config_h.sed: Likewise.
+	* djgpp/djunpack.bat: Likewise.
+	* djgpp/config.sed: Fix copyright notice to match standard format.
+	* djgpp/subpipe.h: Likewise.
+	* lib/bitsetv-print.c: Likewise.
+	* lib/bitsetv.c: Likewise.
+	* lib/subpipe.h: Likewise.
+	* lib/timevar.c: Likewise.
+	* lib/timevar.h: Likewise.
+	* djgpp/subpipe.c: Use standard recipe for config.h.
+	* lib/abitset.c: Likewise.
+	* lib/bitset.c: Likewise.
+	* lib/bitset_stats.c: Likewise.
+	* lib/bitsetv-print.c: Likewise.
+	* lib/bitsetv.c: Likewise.
+	* lib/ebitsetv.c: Likewise.
+	* lib/get-errno.c: Likewise.
+	* lib/lbitset.c: Likewise.
+	* lib/subpipe.c: Likewise.
+	* lib/timevar.c: Likewise.
+	* lib/vbitset.c: Likewise.
+	* tests/local.at: Likewise.
+	* src/scan-gram.l: Don't include verify.h, since system.h does
+	that for us.
+	* .x-sc_require_config_h: New file.
+	* .x-sc_unmarked_diagnostics: New file.
+
+2006-01-20  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Be a bit more systematic about using 'abort'.
+	* lib/abitset.c (abitset_test): Remove ATTRIBUTE_UNUSED; not needed.
+	* lib/bitset.c (bitset_bytes, bitset_init, bitset_op4_cmp):
+	Put 'default: abort ();' before some other case, to satisfy older
+	pedantic compilers.
+	* lib/bitset_stats.c (bitset_stats_init): Likewise.
+	* lib/ebitset.c (ebitset_elt_find, ebitset_op3_cmp): Likewise.
+	* lib/lbitset.c (lbitset_elt_find, lbitset_op3_cmp): Likewise.
+	* src/conflicts.c (resolve_sr_conflict): Likewise.
+	* src/vcg.c (get_color_str, get_textmode_str, get_shape_str):
+	(get_decision_str, get_orientation_str, get_node_alignment_str):
+	(get_arrow_mode_str, get_crossing_type_str, get_view_str):
+	(get_linestyle_str, get_arrowstyle_str): Likewise.
+	* src/conflicts.c (resolve_sr_conflict):
+	Use a default case rather than one for the one remaining enum
+	value, to catch invalid enum values as well.
+	* src/lalr.c (set_goto_map, map_goto):
+	Prefer "assert (FOO);" to "if (!FOO) abort ();".
+	* src/nullable.c (nullable_compute, token_definitions_output):
+	Likewise.
+	* src/reader.c (packgram, reader): Likewise.
+	* src/state.c (transitions_to, state_new, state_reduction_find):
+	Likewise.
+	* src/symtab.c (symbol_user_token_number_set, symbol_make_alias):
+	(symbol_pack): Likewise.
+	* src/tables.c (conflict_row, pack_vector): Likewise.
+	* src/scan-skel.l (QPUTS): Remove unnecessary parens.
+	(BASE_QPUTS, "@output ".*\n): Remove unnecessary asserts.
+	* src/system.h: Don't include <assert.h>.
+	(assert): New macro.
+
+	* doc/bison.texinfo (Prologue, Rules, Actions, Union Decl, Action Decl):
+	(Destructor Decl, Parser Function, Pure Calling):
+	Describe rules for braces inside C code more carefully.
+
+2006-01-19  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Fix some porting glitches found by Nelson H. F. Beebe.
+	* lib/abitset.c (abitset_resize): Rewrite to avoid warnings from
+	compilers that don't understand that abort () does not return.
+	* src/state.c (transitions_to): Likewise.
+	* m4/cxx.m4 (BISON_TEST_FOR_WORKING_CXX_COMPILER): Check
+	that '#include <cstdlib>' works.
+	* src/system.h (INT8_MIN, INT16_MIN, INT32_MIN, INT8_MAX):
+	(INT16_MAX, UINT8_MAX, INT32_MAX, UINT16_MAX, UINT32_MAX):
+	#undef if ! defined __STDC_VERSION__ || __STDC_VERSION__ < 199901,
+	for the benefit of some pre-C99 compilers.
+
+	* bootstrap: Undo changes to gnulib files that autoreconf made.
+
+	Minor fixups to get 'make maintainer-check' to work.
+	* configure.ac: Don't use -Wnested-externs, as it's incompatible
+	with the new verify.h implementation.
+	* data/c.m4 (b4_yy_symbol_print_generate): YYUSE (yyoutput).
+	* data/glr.c (YYUSE): Depend on __GNUC__ as well.
+	* data/yacc.c (YYUSE): Likewise.
+	* data/lalr1.cc (yysyntax_error_): YYUSE (yystate).
+	* lib/subpipe.c (end_of_output_subpipe): The args are unused.
+	* src/parse-gram.y (declaration): Don't pass a string constant
+	to a function that expects char *, since GCC might complain
+	about the constant value.
+	* src/reader.c (symbol_typed_p): Add parens to pacify GCC.
+	* tests/cxx-type.at (_AT_TEST_GLR_CXXTYPES): #undef yylloc and yylval
+	before #defining them.
+	* tests/glr-regression.at
+	(Incorrectly initialized location for empty right-hand side in GLR):
+	In yyerror, use the msg arg.
+	(Corrupted semantic options if user action cuts parse):
+	(Incorrect lookahead during deterministic GLR):
+	(Incorrect lookahead during nondeterministic GLR):
+	Don't name a local var 'index'; it shadows string.h's 'index'.
+
+2006-01-19  Akim Demaille  <akim@epita.fr>
+
+	* tests/calc.at (_AT_DATA_CALC_Y): Initialize the whole initial
+	location, not just parts of it.
+
+2006-01-18  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* NEWS: Document the fact that multiple %unions are now allowed.
+	* doc/bison.texinfo (Union Decl): Likewise.
+	* TODO: This feature is now implemented, so remove it from
+	the wishlist.
+
+	* Makefile.maint: Merge with coreutils Makefile.maint.
+	(CVS_LIST): Use build-aux version if available.
+	(VERSION_REGEXP): New macro.
+	(syntax-check-rules): Add sc_no_if_have_config_h,
+	sc_prohibit_assert_without_use, sc_require_config_h,
+	sc_useless_cpp_parens.
+	(sc_obsolete_symbols): Check for O_NDELAY.
+	(sc_dd_max_sym_length): Track coreutils.
+	(sc_unmarked_diagnostics): Look in all files, not just *.c.
+	(sc_useless_cpp_parens): New rule.
+	(news-date-check): Look for version or today's date.
+	(changelog-check): Don't require version number near head.
+	(copyright-check): Use current year instead of hardwiring 2005.
+	(my-distcheck): Depend on $(release_archive_dir)/$(prev-tgz).
+	(announcement): Add --gpg-key-ID.
+
+	* djgpp/config.sed: Add copyright notice, and replace "filesystem"
+	with "file system".
+
+	Avoid undefined behavior that addressed just before the start of an
+	array.  Problem reported by twlevo.
+	* src/reader.c (packgram): Prepend a new sentinel before ritem.
+	* src/lalr.c (build_relations): Rely on new sentinel.
+	* src/gram.c (gram_free): Adjust to new sentinel.
+
+2006-01-12  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* data/glr.c (yyGLRStateSet): Rename yylookaheadStatuses to
+	yylookaheadNeeds.  All uses updated.
+	(yysplitStack): Rename local yynewLookaheadStatuses to
+	yynewLookaheadNeeds.
+	* data/glr-regression.at (Incorrect lookahead during nondeterministic
+	GLR): In comments, change `lookahead status' to `lookahead need'.
+
+2006-01-11  Paul Hilfinger  <hilfingr@tully.CS.Berkeley.EDU>
+
+	* data/glr.c (yysplitStack): A little stylistic rewrite.
+
+2006-01-11  Paul Hilfinger  <hilfingr@tully.CS.Berkeley.EDU>
+
+	* data/glr.c (yyaddDeferredAction): Flesh out the comment.
+
+2006-01-11  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* doc/bison.texinfo: Fix some typos.
+	(GLR Semantic Actions): New subsection discussing special
+	considerations because GLR semantic actions might be deferred.
+	(Actions): Mention look-ahead usage of yylval.
+	(Actions and Locations): Mention look-ahead usage of yylloc.
+	(Special Features for Use in Actions): Add YYEOF entry and mention it
+	in the yychar entry.
+	In the yychar entry, remove mention of the local yychar case (pure
+	parser) since this is irrelevant information when writing semantic
+	actions and since it's already discussed in `Table of Symbols' where
+	yychar is otherwise described as an external variable.
+	In the yychar entry, don't call it the `current' look-ahead since it
+	isn't when semantic actions are deferred.
+	In the yychar and yyclearin entries, add note about deferred semantic
+	actions.
+	Add yylloc and yylval entries discussing look-ahead usage.
+	(Look-Ahead Tokens): When discussing yychar, don't call it the
+	`current' look-ahead, and do mention yylval and yylloc.
+	(Error Recovery): Cross-reference `Action Features' when mentioning
+	yyclearin.
+	(Table of Symbols): In the yychar entry, don't call it the `current'
+	look-ahead.
+	In the yylloc and yylval entries, mention look-ahead usage.
+
+2006-01-08  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* tests/glr-regression.at: Update copyright year to 2006.
+
+2006-01-06  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* data/glr.c (yyGLRStateSet): Add yybool* yylookaheadStatuses member to
+	use during nondeterministic operation to track which stacks have
+	actually needed the current lookahead.
+	(yyinitStateSet, yyfreeStateSet, yyremoveDeletes, yysplitStack):
+	Allocate, deallocate, resize, and otherwise shuffle space for
+	yylookaheadStatuses in parallel with yystates member of yyGLRStateSet.
+	(yysplitStack, yyprocessOneStack, yyparse): Set lookahead status
+	appropriately during nondeterministic operation.
+	(yySemanticOption): Add int yyrawchar, YYSTYPE yyval, and YYLTYPE yyloc
+	members to store the current lookahead to be used by the deferred
+	user action.
+	(yyaddDeferredAction): Add size_t yyk parameter specifying the stack
+	from which the RHS is taken.  Set the lookahead members of the new
+	yySemanticOption according to the lookahead status for stack yyk.
+	(yyglrShiftDefer, yyglrReduce): Pass yyk parameter on to
+	yyaddDeferredAction.
+	(yyresolveAction): Set yychar, yylval, and yylloc to the lookahead
+	members of yySemanticOption before invoking yyuserAction, and then set
+	them back to their current values afterward.
+	(yyparse): Set yychar = YYEMPTY where yytoken = YYEMPTY.
+	(yyreportAmbiguity): Add /*ARGSUSED*/ to pacify lint.
+	* tests/glr-regression.at: Remove `.' from the ends of recent test case
+	titles for consistency.
+	(Leaked merged semantic value if user action cuts parse): In order to
+	suppress lint warnings, use arguments in merge function, and assign
+	char value < 128 in main.
+	(Incorrect lookahead during deterministic GLR): New test case.
+	(Incorrect lookahead during nondeterministic GLR): New test case.
+
+2006-01-06  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* data/c.m4 (b4_yy_symbol_print_generate): In yy_symbol_print, accept
+	!yyvaluep as signal that no semantic value is available to print.
+	* data/glr.c (yydestroyGLRState): If state is not resolved, don't try
+	to print a semantic value.
+
+2006-01-06  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* tests/glr-regression.at: For consistency with my newer test cases,
+	don't thank myself.
+
+2006-01-05  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* data/glr.c (yyresolveValue): When merging semantic options, if at
+	least one user action succeeds but a later one cuts the parse, then
+	destroy the semantic value before returning rather than leaking it.
+	(yyresolveStates): If a user action cuts the parse and thus
+	yyresolveValue fails, ignore the (unset) semantic value rather than
+	corrupting the yyGLRState, and empty the semantic options list since
+	the user actions should have called all necessary destructors.
+	Simplify code with YYCHK.
+	* tests/glr-regression.at (Corrupted semantic options if user action
+	cuts parse): New test case.
+	(Undesirable destructors if user action cuts parse): New test case.
+	Before applying any of this patch, this test case never actually failed
+	for me... but only because the corrupted semantic options usually
+	masked this bug.
+	(Leaked merged semantic value if user action cuts parse): New test
+	case.
+
+2006-01-05  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c, src/symlist.h, src/symlist.c: s/mid_rule/midrule/.
+
+2006-01-04  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/c.m4 (b4_c_modern): New macro, with a new provision for
+	_MSC_VER.  Problem reported by Cenzato Marco.
+	(b4_c_function_def): Use it.
+	* data/yacc.c (YYMODERN_C): Remove.  All uses replaced by
+	b4_c_modern.
+	(yystrlen, yystpcpy, yyparse): Use b4_c_function... macros rather
+	than rolling our own.
+
+2006-01-04  Akim Demaille  <akim@epita.fr>
+
+	Also warn about non-used mid-rule values.
+	* src/symlist.h, src/symlist.c (symbol_list): Add a mid_rule
+	member.
+	(symbol_list_new): Adjust.
+	* src/reader.c (symbol_typed_p): New.
+	(grammar_rule_check): Use it.
+	(grammar_midrule_action): Bind a mid-rule LHS to its rule.
+	Check its rule.
+	* tests/input.at (AT_CHECK_UNUSED_VALUES): New.
+	Use it.
+	* tests/actions.at (Exotic Dollars): Adjust.
+
+2006-01-04  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (grammar_midrule_action): If $$ is set in a
+	mid-rule, move the `used' bit to its lhs.
+	* tests/input.at (Unused values): New.
+	* tests/actions.at (Exotic Dollars): Adjust: exp is not typed.
+
+2006-01-03  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* doc/bison.texinfo (Bison Options): Say more accurately what
+	--yacc does.
+	* src/parse-gram.y (rules_or_grammar_declaration): Don't complain
+	about declarations in the grammar when in Yacc mode, as POSIX does
+	not require a diagnostic when the grammar uses extensions.
+
+	* src/reduce.c (reduce_grammar): Remove unnecessary cast to bool.
+
+	Warn about dubious constructions like "%token T T".
+	Reported by twlevo.
+	* src/symtab.h (struct symbol.declared): New member.
+	* src/symtab.c (symbol_new): Initialize it to false.
+	(symbol_class_set): New arg DECLARING, specifying whether
+	this is a declaration that we want to warn about, if there
+	is more than one of them.  All uses changed.
+
+	* data/glr.c, data/glr.cc, data/lalr1.cc, data/yacc.c:
+	Allow multiple %union directives, whose contents concatenate.
+	* src/parse-gram.y (grammar_declaration): Likewise.
+	Use muscle_code_grow, so that we don't need stype_line any more.
+	All uses changed.
+
+	* src/muscle_tab.c (muscle_grow): Fix comment.
+
+	* ChangeLog, data/c.m4, data/glr.c, data/glr.cc, data/location.cc:
+	* data/yacc.c, src/getargs.c, src/output.c, tests/cxx-type.at:
+	Update copyright year to 2006.
+
+2006-01-03  Akim Demaille  <akim@epita.fr>
+
+	Have glr.cc pass (some of) the calc.at tests.
+	* data/glr.cc (b4_parse_param_orig): New.
+	(b4_parse_param): Improve its definition, and bound it more
+	clearly in the skeleton.
+	(b4_epilogue): Append, instead of prepending, in order to keep
+	#line consistency.
+	Simplify the generation of auxiliary functions: locations and
+	purity are mandated.
+	(b4_global_tokens_and_yystype): Honor it.
+	* data/location.cc (c++.m4): Don't include it.
+	* tests/local.at (_AT_BISON_OPTION_PUSHDEFS): Define AT_GLR_CC_IF
+	and AT_SKEL_CC_IF.
+	* tests/calc.at (AT_CHECK_CALC): Rely on AT_SKEL_CC_IF instead of
+	AT_LALR1_CC_IF.
+	Be sure to initialize the first position's filename.
+	(AT_CHECK_CALC_LALR1_CC): Add %location and %defines, they are
+	mandated anyway.
+	(AT_CHECK_CALC_GLR_CC): New.
+	Use it to exercise glr.cc as a lalr1.cc drop-in replacement.
+
+2006-01-02  Akim Demaille  <akim@epita.fr>
+
+	* src/output.c (output_skeleton): Don't hard wire the inclusion of
+	c.m4.
+	* data/c++.m4, data/glr.c, data/yacc.c: Include c.m4.
+	* data/glr.cc: Do not include stack.hh.
+
+2006-01-02  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* data/glr.c: Reformat whitespace with tabs.
+	(b4_lpure_formals): Remove this unused m4 macro.
+	* tests/cxx-type.at: Reformat whitespace with tabs.
+	(_AT_TEST_GLR_CXXTYPES): In union Node, rename node_info to nodeInfo
+	since it's a member.  Rename type to isNterm for clarity.
+
+2005-12-29  Akim  <akim@sulaco.local>
+
+	Let glr.cc catch up with symbol_value_print.
+	* data/glr.cc (b4_yysymprint_generate): Replace by...
+	(b4_yy_symbol_print_generate): this.
+	(yy_symbol_print, yy_symbol_value_print): Declare them.
+
+2005-12-28  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* src/location.h (boundary): Note that a line or column equal
+	to INT_MAX indicates an overflow.
+	* src/scan-gram.l: Include verify.h.  Don't include get-errno.h.
+	(rule_length_overflow, increment_rule_length, add_column_width):
+	New functions.
+	(<INITIAL>{id}, <SC_ESCAPED_STRING>"\"", <SC_ESCAPED_CHARACTER>"'"):
+	(<SC_BRACED_CODE>"}"):
+	Use increment_rule_length rather than incrementing it by hand.
+	(adjust_location, handle_syncline): Diagnose overflow.
+	(handle_action_dollar, handle_action_at):
+	Fix bug with monstrosities like $-2147483648.
+	Remove now-unnecessary checks.
+	(scan_integer): Verify assumptions and remove now-unnecessary checks.
+	(convert_ucn_to_byte): Verify assumptions.
+	(handle_syncline): New arg LOC.  All callers changed.
+	Don't store through a value derived from char const * pointer.
+
+	* src/reader.c (grammar_rule_check): Rewrite slightly to avoid
+	GCC warnings.
+
+2005-12-27  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* src/reader.c (grammar_midrule_action, grammar_symbol_append):
+	Remove unnecessary forward static decls.
+
+2005-12-27  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (grammar_current_rule_check): Also check that $$
+	is used.
+	Take the rule to check as argument, hence rename as...
+	(grammar_rule_check): this.
+	* src/reader.h, src/reader.c (grammar_rule_begin, grammar_rule_end):
+	Rename as...
+	(grammar_rule_begin, grammar_rule_end): these, for consistency.
+	(grammar_midrule_action, grammar_symbol_append): Now static.
+	* tests/torture.at (input): Don't rely on the default action
+	being always performed.
+	* tests/calc.at: "Set" $$ even when the action is "cut" with
+	YYERROR or other.
+	* tests/actions.at (Exotic Dollars): Instead of using unused
+	values, check that the warning is issued.
+
+2005-12-22  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* NEWS: Improve wording for unused-value warnings.
+
+2005-12-22  Akim Demaille  <akim@epita.fr>
+
+	* data/lalr1.cc, data/yacc.c, data/glr.c, data/c.m4
+	(b4_yysymprint_generate): Rename as...
+	(b4_yy_symbol_print_generate): this.
+	Generate yy_symbol_print instead of yysymprint.
+	Generate also yy_symbol_value_print, and use it.
+
+2005-12-22  Akim Demaille  <akim@epita.fr>
+
+	* NEWS: Warn about unused values.
+	* src/symlist.h, src/symlist.c (symbol_list, symbol_list_new): Add
+	a `used' member.
+	(symbol_list_n_get, symbol_list_n_used_set): New.
+	(symbol_list_n_type_name_get): Use symbol_list_n_get.
+	* src/scan-gram.l (handle_action_dollar): Flag used symbols.
+	* src/reader.c (grammar_current_rule_check): Check that values are
+	used.
+	* src/symtab.c (symbol_print): Accept 0.
+	* tests/existing.at: Remove the type information.
+	Empty the actions.
+	Remove useless actions (beware of mid-rule actions: perl -000
+	-pi -e 's/\s*\{\}(?=[\n\s]*[|;])//g').
+	* tests/actions.at (Exotic Dollars): Use unused values.
+	* tests/calc.at: Likewise.
+	* tests/glr-regression.at (No users destructors if stack 0 deleted):
+	Likewise.
+
+	* src/gram.c (rule_useful_p, rule_never_reduced_p): Use
+	rule_useful_p.
+
+2005-12-21  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Undo 2005-12-01 tentative license wording change.  The wording is
+	still being reviewed by the lawyers, and we don't want to wait for
+	them before publishing a test release.  For now, revert to the
+	previous wording.
+	* NEWS: Undo 2005-12-01 change.
+	* data/glr.c: Revert to previous license wording.
+	* data/glr.cc: Likewise.
+	* data/lalr1.cc: Likewise.
+	* data/location.cc: Likewise.
+	* data/yacc.c: Likewise.
+
+	* NEWS: Reword %destructor vs YYABORT etc.
+	* data/glr.c: Use American spacing, for consistency.
+	* data/glr.cc: Likewise.
+	* data/lalr1.cc: Likewise.
+	* data/yacc.c: Likewise.
+	* data/yacc.c: Reformat comments slightly.
+	* doc/bison.texinfo: Replace "non-" with "non" when that makes sense,
+	for consistency.  Fix some spelling errors and reword recently-included
+	text slightly.
+	* tests/cxx-type.at: Cast results of malloc, for C++.
+
+2005-12-21  Joel E. Denny  <address@hidden>
+
+	* tests/cxx-type.at: Construct a tree, count the parents of shared
+	nodes, and free each node once and only once.  Previously, the memory
+	for semantic values was leaked instead.
+
+2005-12-21  Joel E. Denny  <address@hidden>
+
+	* data/glr.c (struct yyGLRStack): If pure, add yyval and yyloc members.
+	(yylval, yylloc): If pure, #define to yystackp->yyval and
+	yystackp->yyloc similar to yychar and yynerrs.
+	(yyparse): If pure, remove local yylval and yylloc. Add local
+	yystackp to accommodate pure definitions of yylval and yylloc.
+	(b4_lex_param, b4_lyyerror_args, b4_lpure_args): If pure, change
+	yylvalp and yyllocp to &yylval and &yylloc.
+	(nerrs, char, lval, lloc): If pure, add #define's for b4_prefix[]
+	namespace. Previously, nerrs and char were missing, but lval and lloc
+	weren't necessary.
+	(yyprocessOneStack, yyreportSyntaxError, yyrecoverSyntaxError): Remove
+	yylvalp and yyllocp parameters since, if pure, these are now always
+	accessible through yystackp.  If not pure, they are still accessible
+	globally.
+	* data/glr.c, data/yacc.c (YYLLOC_DEFAULT): Change `if (N)' to
+	`if (YYID (N))' to pacify lint.
+
+2005-12-21  Akim Demaille  <akim@epita.fr>
+
+	YYACCEPT, YYERROR, and YYABORT, as user actions, should not
+	destroy the RHS symbols of a rule.
+	* data/yacc.c (yylen): Initialize to 0.
+	Keep its value to the number of items to possibly shift.
+	In particular, a regular successful parse that ends on YYFINAL by
+	a (internal) YYACCEPT must not have yylen != 0.
+	(yyerrorlab, yyreturn): Pop the RHS.
+	Reorder a bit to emphasize the `shifting' bits of code.
+	(YYPOPSTACK): Now accept a number of items to pop.
+	* data/lalr1.cc: Likewise.
+	* data/glr.c: Formatting changes.
+	Use goto instead of fall through.
+	* doc/bison.texinfo (Destructor Decl): Complete.
+
+2005-12-20  Juan Manuel Guerrero  <juan.guerrero@gmx.de>
+
+	* Makefile.am: DJGPP specific files added to EXTRA_DIST.
+	* djgpp/Makefile.maint: Fix PACKAGE variable computation.
+	* djgpp/config.bat: Replace every occurrence of the file name
+	scan-gram-c.c with c-scan-gram.c. The same for scan-skel-c.c with
+	c-scan-skel.c to conform with the 8.3 file name restriction on MSDOS.
+	* djgpp/config.sed: Replace every occurrence of the file name
+	scan-gram-c.c with c-scan-gram.c. The same for scan-skel-c.c with
+	c-scan-skel.c to conform with the 8.3 file name restriction on MSDOS.
+	* djgpp/djunpack.bat: DJGPP specific file.
+	* djgpp/fnchange.lst: DJGPP specific file.
+	* djgpp/README.in: Add new information about how to unpack the bison
+	source on MSDOS and other systems which have 8.3 file name restrictions
+	using djunpack.bat and fnchange.lst.
+
+2005-12-12  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* bootstrap (build_cvs_prefix): Remove; unused.
+	(CVS_PREFIX): Adjust to yesterday's Savannah reorganization
+	when getting gnulib.
+
+2005-12-12  "Joel E. Denny" <jdenny@ces.clemson.edu>
+
+	* data/glr.c: Reorder typedef declarations for structs to match order
+	of struct declarations.
+	Rename yystack everywhere to yystackp except in yyparse where it's not
+	a pointer.
+	(yyglrShift): Change parameter YYSTYPE yysval to YYSTYPE* yyvalp for
+	consistency.
+	(yyis_table_ninf): Change 0 to YYID (0) to pacify lint.
+	(yyreportSyntaxError): Add /*ARGSUSED*/ to pacify lint.
+	(yyparse): Change while (yytrue) to while ( YYID (yytrue)) to pacify
+	lint.
+
+2005-12-09  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* tests/sets.at (Accept): Fix typos in regular expression used to
+	sed out the final state number.
+
+	Work around portability problem on Solaris 10: flex-generated
+	files include <stdio.h> before <config.h>, which messes up
+	because the latter defines __EXTENSIONS__.  Address the problem
+	by creating two new little files that include <config.h> first,
+	then include the flex-generated files.  Rewrite everyone else
+	to include <config.h> first, as well.
+	* lib/timevar.c: Always include "config.h".
+	* src/Makefile.am (bison_SOURCES): Replace scan-gram.l with
+	scan-gram-c.c, and scan-skel.l with scan-skel-c.c.
+	(EXTRA_bison_SOURCES): New macro.
+	* src/scan-gram-c.c, src/scan-skel-c.c: New files.
+	* src/system.h: Don't include config.h.
+	* src/LR0.c: Include <config.h> first.
+	* src/assoc.c: Likewise.
+	* src/closure.c: Likewise.
+	* src/complain.c: Likewise.
+	* src/conflicts.c: Likewise.
+	* src/derives.c: Likewise.
+	* src/files.c: Likewise.
+	* src/getargs.c: Likewise.
+	* src/gram.c: Likewise.
+	* src/lalr.c: Likewise.
+	* src/location.c: Likewise.
+	* src/main.c: Likewise.
+	* src/muscle_tab.c: Likewise.
+	* src/nullable.c: Likewise.
+	* src/output.c: Likewise.
+	* src/parse-gram.y: Likewise.
+	* src/print.c: Likewise.
+	* src/print_graph.c: Likewise.
+	* src/reader.c: Likewise.
+	* src/reduce.c: Likewise.
+	* src/relation.c: Likewise.
+	* src/state.c: Likewise.
+	* src/symlist.c: Likewise.
+	* src/symtab.c: Likewise.
+	* src/tables.c: Likewise.
+	* src/uniqstr.c: Likewise.
+	* src/vcg.c: Likewise.
+
+	* src/parse-gram.y: Fix minor problems uncovered by lint.
+	(current_lhs, current_lhs_location): Now static.
+	(current_assoc): Remove unused variable.
+
+	Cleanups so that Bison-generated parsers have less lint.
+	* data/c.m4 (b4_yydestruct_generate, b4_yysymprint_generate):
+	Prepend /*ARGSUSED*/, for lint's sake.
+	* data/glr.c (YYUSE): Properly parenthesize, and use an alternate
+	definition if 'lint' is defined.
+	(YYID): New macro (or function, if lint).
+	All uses of /*CONSTCOND*/0 replaced by YYID(0).
+	* data/yacc.c: Likewise.
+	* data/glr.c (yyuserAction, yyuserMerge, yy_reduce_print):
+	(yyrecoverSyntaxError): Prepend /*ARGSUSED*/.
+	* data/glr.cc (YYLLOC_DEFAULT): Omit /*CONSTCOND*/ since this code
+	is C++ only.
+	* data/lalr1.cc (YYUSE): Just use a cast, since this code is C++ only.
+	* data/yacc.c (YYSTACK_FREE) [defined YYSTACK_ALLOC]:
+	Use YYID(0) rather than 0, for lint.
+	(yystrlen): Rewrite to avoid lint warning about ptrdiff_t overflow.
+	(yysyntax_error): Rewrite to avoid lint warnings about parenthesization.
+
+2005-12-07  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* tests/glr-regression.at
+	(Improper handling of embedded actions and dollar(-N) in GLR parsers):
+	Close memory leak reported by twlevo.
+
+2005-12-06  "Joel E. Denny" <jdenny@ces.clemson.edu>
+
+	* data/glr.c (yyprocessOneStack, yyparse): Synchronize the shift for
+	all stacks.
+	(yyparse): Iterate another stack in order to call user destructors.
+	* tests/glr-regression.at (No users destructors if stack 0 deleted):
+	New test case.
+	(Duplicated user destructor for lookahead): This test now is expected
+	to succeed.
+
+2005-12-01  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* NEWS: Document the following change.
+	* data/yacc.c: Say "parser skeleton" rather than "file", since
+	it's no longer just a file.
+	* data/glr.c: Grant a special exception for C GLR parsers, that
+	reads like the already-existing exception for C LALR(1) parsers.
+	* data/glr.cc: Likewise.
+	* data/lalr1.cc: Likewise.
+	* data/location.cc: Likewise.
+	* data/yacc.c: Reword the "written by" statement to clarify that
+	it was the parser skeleton, not the entire output file.
+	* data/glr.c: Written by Paul Hilfinger.
+	* data/glr.cc: Written by Akim Demaille.
+	* data/lalr1.cc: Likewise.
+
+2005-11-18  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/yacc.c (yy_reduce_print, YY_REDUCE_PRINT):
+	Fix typos in previous change that broke 'make check'.
+	YY_REDUCE_PRINT cannot be a pseudo-varargs macro; that isn't
+	supported in C.
+	* tests/calc.at (_AT_CHECK_CALC,_AT_CHECK_CALC_ERROR):
+	Don't check NUM-STDERR-LINES, since the output format is fluctuating.
+	We can revert this once things settle down.
+
+	* src/conflicts.c (conflicts_print): Don't print file name twice
+	when %expect fails because there were no conflicts.
+	* doc/bison.texinfo (Expect Decl): Tighten up wording in previous
+	change.
+	* tests/conflicts.at (%expect not enough, %expect too much):
+	(%expect with reduce conflicts): Adjust to new behavior.
+
+2005-11-18  Akim Demaille  <akim@epita.fr>
+
+	* src/conflicts.c (conflicts_print): Unsatisfied %expectation are
+	errors.
+	* NEWS: Document this.
+	* doc/bison.texinfo (Expect Decl): Likewise.
+
+2005-11-16  Akim Demaille  <akim@epita.fr>
+
+	Generalize the display of semantic values and locations in traces.
+	* data/glr.c (yy_reduce_print): Fix indices (again).
+	* data/c++.m4 (b4_rhs_value, b4_rhs_location): Don't expect
+	literal integers.
+	* data/lalr1.cc (yyreduce_print): Rename as...
+	(yy_reduce_print): this.
+	Display values and locations.
+	* data/yacc.c (yy_reduce_print): Likewise.
+	(YY_REDUCE_PRINT): Adjust to pass the required arguments.
+	(yysymprint): Move higher to be visible from yy_reduce_print).
+	(yyparse): Adjust.
+	* tests/calc.at: Adjust the expected length of the traces.
+
+2005-11-14  Akim Demaille  <akim@epita.fr>
+
+	* data/glr.c (yy_reduce_print): The loop was quite wrong: type are
+	from 1 to N, while values and location start at 0.
+	(b4_rhs_location, b4_rhs_value): Add parens around $1 and $2.
+
+2005-11-14  Akim Demaille  <akim@epita.fr>
+
+	* data/glr.c (yy_reduce_print): Fix the $ number.
+
+2005-11-14  Akim Demaille  <akim@epita.fr>
+
+	"Use" parse parameters.
+	* data/c.m4 (b4_parse_param_for, b4_parse_param_use): New.
+	* data/glr.c, data/glr.cc: Use them.
+	* data/glr.c (YYUSE): Have a C++ definition that supports
+	non-pointer types.
+
+2005-11-14  Akim Demaille  <akim@epita.fr>
+
+	* data/glr.c (yyexpandGLRStack): Declare only if defined.
+
+2005-11-14  Akim Demaille  <akim@epita.fr>
+
+	* data/glr.cc: New.
+	* data/m4sugar/m4sugar.m4 (m4_prepend): New.
+
+2005-11-12  Akim Demaille  <akim@epita.fr>
+
+	Let position and location be PODs.
+	* data/location.cc (position::initialize, location::initialize): New.
+	(position::position, location::location): Define only if
+	b4_location_constructors is defined.
+	* data/lalr1.cc (b4_location_constructors): Define it for backward
+	compatibility.
+	* doc/bison.texinfo (Initial Action Decl): Use initialize.
+
+2005-11-12  Akim Demaille  <akim@epita.fr>
+
+	* data/lalr1.cc: Move the body of the ctor and dtor into the
+	parser file (instead of the header).
+	Wrap the implementations in a "namespace yy".
+
+2005-11-12  Akim Demaille  <akim@epita.fr>
+
+	Have glr.c include its header file when created.
+	* data/glr.c (b4_shared_declarations): New.
+	Output them verbatim in the parser if !%defines, otherwise
+	output then in the header file, and include it instead.
+
+2005-11-11  Akim Demaille  <akim@epita.fr>
+
+	* data/glr.c: Comment changes.
+
+2005-11-11  Akim Demaille  <akim@epita.fr>
+
+	When yydebug, report semantic and location values for reductions.
+	* data/glr.c (yy_reduce_print): Report the semantic values and the
+	locations.
+	(YY_REDUCE_PRINT): Adjust.
+	(yyglrReduce): Use them.
+	(b4_rhs_value, b4_rhs_location): Remove m4_eval invocations.
+	* data/c.m4 (b4_yysymprint_generate): Specify the const arguments.
+	* tests/calc.at (_AT_CHECK_CALC_ERROR): Remove the reduction
+	traces.
+
+2005-11-10  Akim Demaille  <akim@epita.fr>
+
+	* data/glr.c (yynewGLRStackItem, YY_RESERVE_GLRSTACK): New.
+	(yyaddDeferredAction, yyglrShift, yyglrShiftDefer): Use them.
+	(yyexpandGLRStack, YYRELOC): Define only when YYSTACKEXPANDABLE.
+
+2005-11-09  Albert Chin-A-Young  <china@thewrittenword.com>
+
+	* m4/cxx.m4, examples/Makefile.am: Don't build
+	examples/calc++ if no C++ compiler is available.  (trivial change)
+
+2005-11-09  Akim Demaille  <akim@epita.fr>
+
+	* src/scan-skel.l: Use a couple of asserts.
+
+2005-11-03  Akim Demaille  <akim@epita.fr>
+
+	In some (weird) cases, the final state number is incorrect.
+	Reported by Alexandre Duret-Lutz.
+	* src/LR0.c (state_list_append): Remove the computation of
+	final_state.
+	(save_reductions): Do it here.
+	(get_state): Alpha conversion.
+	(generate_states): Use a for loop.
+	* src/gram.h (item_number_is_rule_number)
+	(item_number_is_symbol_number): New.
+	* src/state.c: Use assert.
+	* src/system.h: Include assert.h.
+	* tests/sets.at (Accept): New.
+
+2005-10-30  Paul Hilfinger  <hilfingr@tully.CS.Berkeley.EDU>
+
+	* data/glr.c (yyfill): Adjust comment.
+	(yyresolveAction): Initialize default location properly
+	for empty right-hand sides.
+	(yydoAction): Ditto.
+	Add comment explaining apparently dead code.
+	* tests/glr-regression.at
+	(Incorrectly initialized location for empty right-hand side in GLR):
+	New test.
+
+2005-10-30  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* bootstrap (cleanup_gnulib): New function.  Use it to clean up
+	gnulib when interrupted.  This fixes some race conditions and
+	works around some portability problems (one noted by Paul
+	Hilfinger).
+
+2005-10-22  Akim  <akim@epita.fr>
+
+	* Makefile.cfg: Adjust to config -> build-aux.
+	Reported by twledo.
+
+2005-10-21  Akim Demaille  <akim@epita.fr>
+
+	* data/c.m4 (b4_yydestruct_generate, b4_yysymprint_generate): Pass
+	the %parse-params.
+	* data/glr.c (YY_SYMBOL_PRINT, yydestroyGLRState): Adjust.
+	* data/yacc.c (b4_Pure_if): Rename as...
+	(b4_yacc_pure_if): this.
+	(YY_SYMBOL_PRINT, yyparse): Adjust.
+	* doc/bison.texinfo: Formatting changes.
+
+2005-10-21  Akim Demaille  <akim@epita.fr>
+
+	Finish the transition config -> build-aux.
+	* configure.ac, Makefile.am: Use build-aux.
+	* config/prev-version, config/announce-gen, config/Makefile.am:
+	Move to...
+	* build-aux/prev-version, build-aux/announce-gen,
+	* build-aux/Makefile.am: here.
+
+2005-10-14  Akim Demaille  <akim@epita.fr>
+
+	* examples/calc++/test: Use set -x only when VERBOSE.
+
+2005-10-13  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* NEWS: Bison now warns if it finds a stray `$' or `@' in an action.
+	* src/scan-gram.l (<SC_BRACED_CODE>[$@]): Implement this.
+
+2005-10-13  Akim Demaille  <akim@epita.fr>
+
+	* src/scan-skel.l: Output the base name parts of the parser and
+	header file names.
+	* tests/output.at (AT_CHECK_OUTPUT): Support subdirectories, and
+	additional checks.
+	Use this to exercise C++ outputs in subdirs.
+	Reported by Oleg Smolsky.
+
+2005-10-12  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/c.m4 (b4_c_function_def): Look at __C99_FUNC__, not at
+	__STDC_VERSION__, as IBM cc 7.0 doesn't define the latter either.
+	Problem reported by John P. Hartmann.
+	* data/yacc.c (YYMODERN_C): Likewise.  Don't define if the user has
+	already defined it.
+
+2005-10-12  Akim Demaille  <akim@epita.fr>
+
+	* src/parse-gram.y (version_check): Exit 63 to please missing
+	(stands for "version mismatch).
+	* tests/input.at, doc/bison.texinfo: Adjust.
+
+2005-10-10  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Work around portability problems with Visual Age C compiler
+	(xlc and xlC_r) reported by John P. Hartmann.
+	* data/location.cc (initial_column, initial_line): Remove.
+	All uses replaced by 0 and 1.
+	* src/scan-gram.l (gram_wrap): Redefine to avoid bug in flex 2.5.31
+	that xlc complains about.
+	* src/scan-skel.l (skel_wrap): Likewise.
+	* data/c.m4 (b4_c_function_def): Look at __STDC_VERSION__ as well
+	as __STDC__.
+	* data/yacc.c (YYMODERN_C): New macro, which also looks at
+	__STDC_VERSION__.  Use it everywhere instead of looking at
+	__STDC__ and __cplusplus.
+
+2005-10-10  Akim Demaille  <akim@epita.fr>
+
+	* examples/calc++/test: Be quiet unless VERBOSE.
+
+2005-10-05  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/c.m4 (yydestruct, yysymprint):
+	Use YYUSE instead of casting to void.
+	* data/glr.c (YYUSE): New macro.
+	(yyuserMerge, yyreportAmbiguity, yyreportSyntaxError):
+	Use it instead of rolling our own.
+	(YYLLOC_DEFAULT, YYCHK, YYDPRINTF, YY_SYMBOL_PRINT, YY_REDUCE_PRINT):
+	(YYCHK1):
+	Use /*CONSTCOND*/ to suppress lint warnings.
+	* data/lalr1.cc (YYLLOC_DEFAULT, YY_SYMBOL_PRINT, YY_REDUCE_PRINT):
+	(YY_STACK_PRINT): Use 'false' not '0'.
+	(YYUSE): New macro.
+	(yysymprint_, yydestruct_): Use it instead of rolling our own.
+	* data/yacc.c (YYUSE): New macro.
+	(YYCOPY, YYSTACK_RELOCATE, YYBACKUP, YYLLOC_DEFAULT):
+	(YYDPRINTF, YY_SYMBOL_PRINT, YY_STACK_PRINT, YY_REDUCE_PRINT):
+	(yyerrorlab): Use /*CONSTCOND*/ to suppress lint warnings.
+
+
+	* data/m4sugar/m4sugar.m4 (_m4_map): New macro.
+	(m4_map, m4_map_sep): Use it.  Handle the empty list correctly.
+
+2005-10-04  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Undo the parts of the unlocked-I/O change that substituted
+	putc or puts for printf.  This might hurt performance a bit,
+	but some people prefer the printf style.
+	* data/c.m4 (yysymprint): Prefer printf to puts and putc.
+	* data/glr.c (YYFPUTC, YYFPUTS, YYDPUTS): Remove.
+	All uses replaced by YYFPRINTF and YYDPRINTF.
+	* data/yacc.c: Likewise.
+	* lib/bitset.c (bitset_print): Likewise.
+	* lib/bitsetv.c (bitsetv_dump, debug-bitsetv): Prefer printf to
+	putc and puts.
+	* lib/lbitset.c (debug_lbitset): Likewise.
+	* src/closure.c (print_firsts, print_fderives): Likewise.
+	* src/gram.c (grammar_dump): Likewise.
+	* src/lalr.c (look_ahead_tokens_print): Likewise.
+	* src/output.c (escaped_output): Likewise.
+	(user_actions_output): Break apart two printfs.
+	* src/parse-gram.y (%printer): Prefer printf to putc and puts.
+	* src/reduce.c (reduce_print): Likewise.
+	* src/state.c (state_rule_look_ahead_tokens_print): Likewise.
+	* src/system.h: Include unlocked-io.h rathe than stdio.h.
+
+	* data/glr.c (yyuserMerge, yyreportAmbiguity, yyreportSyntaxError):
+	Use assignments rather than casts-to-void to suppress
+	unused-variable warnings.  This pacifies 'lint'.
+	* data/lalr1.cc (yysymprint_, yydestruct_): Use a call to suppress
+	unused-variable warnings.
+
+2005-10-03  Juan Manuel Guerrero  <juan.guerrero@gmx.de>
+
+	* Makefile.am: DJGPP specific files added to EXTRA_DIST.
+
+2005-10-02  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Use unlocked I/O for a minor performance improvement on hosts like
+	GNU/Linux and Solaris that support unlocked I/O.  The basic idea
+	is to use the gnlib unlocked-io module, and to prefer putc and
+	puts to printf when either will work (since the latter doesn't
+	come in an unlocked flavor).
+	* bootstrap (gnulib_modules): Add unlocked-io.
+	* data/c.m4 (yysymprint): Prefer puts and putc to printf.
+	* data/glr.c (YYFPUTC, YYFPUTS, YYDPUTS): New macros.
+	Prefer them to YYFPRINTF and YYDPRINTF if either will do,
+	and similarly for puts and putc and printf.
+	* data/yacc.c: Likewise.
+	* lib/bitset.c (bitset_print): Likewise.
+	* lib/bitset.h [USE_UNLOCKED_IO]: Include unlocked-io.h.
+	* lib/bitsetv.c (bitsetv_dump, debug-bitsetv): Prefer putc and puts
+	to printf.
+	* lib/lbitset.c (debug_lbitset): Likewise.
+	* src/closure.c (print_firsts, print_fderives): Likewise.
+	* src/gram.c (grammar_dump): Likewise.
+	* src/lalr.c (look_ahead_tokens_print): Likewise.
+	* src/output.c (escaped_output): Likewise.
+	(user_actions_output): Coalesce two printfs.
+	* src/parse-gram.y (%printer): Prefer putc and puts to printf.
+	* src/reduce.c (reduce_print): Likewise.
+	* src/state.c (state_rule_look_ahead_tokens_print): Likewise.
+	* src/system.h: Include unlocked-io.h rather than stdio.h.
+
+	* data/lalr1.cc: Don't put an unmatched ' in a dnl comment, as
+	this confuses xgettext.
+
+2005-10-02  Akim Demaille  <akim@epita.fr>
+
+	* bootstrap (gnulib_modules): Add strverscmp.
+	* lib/.cvsignore: Add strverscmp.c, strverscmp.h.
+	* m4/.cvsignore: Add strverscmp.m4.
+	* src/parse-gram.y (%require): New token, new rule.
+	(version_check): New.
+	* src/scan-gram.l (%require): Adjust.
+	* tests/input.at (AT_REQUIRE): New.
+	Use it.
+	* doc/bison.texinfo (Require Decl): New.
+	(Calc++ Parser): Use %require.
+
+2005-10-02  Akim Demaille  <akim@epita.fr>
+
+	* data/location.cc: New.
+
+2005-10-02  Paul Eggert  <eggert@cs.ucla.edu>,
+	    Akim Demaille  <akim@epita.fr>
+
+	Make sure -odir/foo.cc creates dir/location.hh etc.
+	* src/files.h (spec_outfile, parser_file_name, spec_name_prefix)
+	(spec_file_prefix, spec_verbose_file, spec_graph_file)
+	(spec_defines_file): Now const.
+	(dir_prefix): New.
+	(short_base_name): Remove.
+	* src/files.c: Adjust.
+	(dirname.h): Include.
+	(base_name): Don't prototype it.
+	(finput): Remove, duplicates gram_in.
+	(full_base_name, short_base_name): Replace by...
+	(all_but_ext, all_but_tab_ext): these.
+	(compute_base_names): Rename as...
+	(compute_file_name_parts): this.
+	Update to compute the new variables, including dir_prefix.
+	Adjust dependencies.
+	* src/output.c (prepare): Output them.
+	* src/reader.c: Adjust to use gram_in, not finput.
+	* src/scan-skel.l (@dir_prefix@): New.
+
+2005-10-02  Juan Manuel Guerrero  <juan.guerrero@gmx.de>
+
+	* lib/subpipe.c: New function end_of_output_subpipe() added
+	to allow support for non-posix systems. This is a no-op function
+	for posix systems.
+
+	* lib/subpipe.h: New function end_of_output_subpipe() added
+	to allow support for non-posix systems. This is a no-op function
+	for posix systems.
+
+	* src/output.c (output_skeleton): Use end_of_output_subpipe() to
+	handle the lack of pipe/fork functionality on non-posix systems.
+
+	* djgpp/Makefile.maint: DJGPP specific file.
+
+	* djgpp/README.in: DJGPP specific file.
+
+	* djgpp/config.bat: DJGPP specific configuration file.
+
+	* djgpp/config.sed: DJGPP specific configuration file.
+
+	* djgpp/config.site: DJGPP specific configuration file.
+
+	* djgpp/config_h.sed: DJGPP specific configuration file.
+
+	* djgpp/subpipe.c: DJGPP specific replacement file for lib/subpipe.c.
+
+	* djgpp/subpipe.h: DJGPP specific replacement file for lib/subpipe.h.
+
+2005-10-02  Akim Demaille  <akim@epita.fr>
+
+	* data/location.cc: New, extract from...
+	* data/lalr1.cc: here.
+	(location.hh): Include it after the user prologue, in case the
+	filename type is defined by the user.
+	Forward declation location and position before the pre-prologue.
+	(yyresult_): Rename as...
+	(yyresult): this, it's a local variable, not an attribute.
+	* data/Makefile.am (dist_pkgdata_DATA): Adjust.
+
+2005-10-01  Akim Demaille  <akim@epita.fr>
+
+	* examples/extexi: Restore the #line generation.
+
+2005-09-30  Akim Demaille  <akim@epita.fr>,
+	    Alexandre Duret-Lutz <adl@gnu.org>
+
+	Move the token type and YYSTYPE in the parser class.
+	* data/lalr1.cc (stack.hh, location.hh): Include earlier.
+	(parser::token): New, from the moved free definition of tokens.
+	(parser::semantic_value): Now a full definition instead of an
+	indirection to YYSTYPE.
+	(b4_post_prologue): No longer included in the header file, but
+	in the implementation file.
+	* doc/bison.texi (C+ Language Interface): Update.
+	* src/parse-gram.y: Support unary %define.
+	* tests/actions.at: Define global_tokens_and_yystype for backward
+	compatibility until we update the tests.
+	* tests/calc.at: Idem.
+	(first_line, first_column, last_line, last_column): Define for lalr1.cc
+	to simplify the code.
+
+2005-09-29  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Port to SunOS 4.1.4, which lacks strtoul and strerror.
+	Ah, the good old days!  Problem reported by Peter Klein.
+	* bootstrap (gnulib_modules): Add strerror, strtoul.
+	* lib/.cvsignore: Add strerror.c, strtol.c, strtoul.c
+	* m4/.cvsignore: Add strerror.m4, strtol.m4, strtoul.m4.
+
+2005-09-29  Akim Demaille  <akim@epita.fr>
+
+	* data/c.m4 (b4_error_verbose_if): New.
+	* data/lalr1.cc: Use it.
+	(YYERROR_VERBOSE_IF): Remove.
+	(yyn_, yylen_, yystate_, yynerrs_, yyerrstatus_): Remove as
+	parser members, replaced by...
+	(yyn, yylen, yystate, yynerss, yyerrstatus): these parser::parse
+	local variables.
+	(yysyntax_error_): Takes the state number as argument.
+	(yyreduce_print_): Use the argument yyrule, not the former
+	attribute yyn_.
+
+2005-09-26  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* bootstrap (gnulib_modules): Add verify.
+	* lib/.cvsignore: Add verify.h.
+	* src/getargs.c: Use ARGMATCH_VERIFY rather than verify.
+	* src/system.h (verify): Remove.
+	Include verify.h instead.
+	* src/tables.c (tables_generate): Use new API for 'verify'.
+
+2005-09-21  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* tests/local.at (_AT_BISON_OPTION_PUSHDEFS): Do not use
+	local variables whose names begin with 'yy'.
+	* tests/calc.at (_AT_DATA_CALC_Y): Likewise.
+	Trivial changes from Joel E. Denny.
+
+	* bootstrap (gnulib_modules): Remove alloca.  Bison doesn't need
+	it itself.
+	* src/main.c (main) [C_ALLOCA]: Don't flush alloca'ed memory; we
+	don't use alloca any more.
+
+	* data/yacc.c [YYSTACK_USE_ALLOCA && !defined __GNUC__ && ! defined
+	__BUILTIN_VA_ARG_INCR && ! defined _AIX && ! defined _MSC_VER &&
+	defined _ALLOCA_H]: Don't include <stdlib.h>; not needed in this case.
+	* tests/torture.at (Exploding the Stack Size with Alloca): Adjust
+	to match yacc.c, to test more hosts.
+
+2005-09-20  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/yacc.c (YYSIZE_T): Reindent to make it clearer.  This
+	doesn't affect behavior.
+	(YYSTACK_ALLOC) [YYSTACK_USE_ALLOCA]: Improve support for
+	Solaris, AIX, MSC.
+	(_STDLIB_H): Renamed from YYINCLUDED_STDLIB_H.  All uses changed.
+	This works a bit better with glibc, if user code has already included
+	stdlib.h.
+	* doc/bison.texinfo (Bison Parser): Document that users can't
+	arbitrarily use malloc and free for other purposes.  Document
+	that <alloca.h> and <malloc.h> might be included.
+	(Table of Symbols): Under YYSTACK_USE_ALLOCA, Don't claim that the
+	user must declare alloca.
+
+	* HACKING (release): Forwarn the Translation Project about
+	stable releses.
+
+2005-09-20  Akim Demaille  <akim@epita.fr>
+
+	* data/glr.c: Use b4_token_enums, not b4_token_enums_defines.
+
+2005-09-19  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/yacc.c (YYSIZE_MAXIMUM): New macro.
+	(YYSTACK_ALLOC_MAXIMUM): Use it.
+	(yysyntax_error): New function.
+	(yyparse) [YYERROR_VERBOSE]: Don't leak memory indefinitely if
+	multiple syntax errors are reported, and alloca is being used.
+	Instead, reallocate buffers twice as big each time, so that
+	we waste at most half the allocated memory.  Start with a small
+	(128-byte) buffer that will suffice in most cases anyway.
+	Use yysyntax_error to do most of the work.
+
+	* doc/bison.texinfo (Error Reporting, Table of Symbols):
+	yynerrs is the number of errors reported, not the number of
+	errors encountered.
+
+	* tests/glr-regression.at (Duplicated user destructor for lookahead):
+	Mark it as expected to fail.
+	Cast result of malloc; problem reported by twlevo@xs4all.nl.
+	* tests/actions.at, tests/calc.at, tests/glr-regression.at:
+	Don't start user-code symbols with "yy", to avoid name space problems.
+
+2005-09-19  Akim Demaille  <akim@epita.fr>
+
+	Remove the traits, failed experiment.
+	It never proved useful, and anyway because of the current
+	definition, it was not possible to have several specialization of
+	this traits, making it useless.
+	* data/lalr1.cc (yy:traits): Remove.
+	Inline its definitions in the parser class.
+
+2005-09-19  Akim Demaille  <akim@epita.fr>
+
+	* tests/atlocal.in (LIBS): Pass INTLLIBS to address failures on at
+	least Mac OSX with a /usr/local install of gettext.
+
+2005-09-19  Akim Demaille  <akim@epita.fr>
+
+	* data/lalr1.cc (yyparse): Rename yylooka and yyilooka as yychar
+	and yytoken for similarity with the other skeletons.
+
+2005-09-19  Akim Demaille  <akim@epita.fr>
+
+	* NEWS, configure.ac: update version number to 2.1a.
+
+2005-09-16  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* NEWS: Version 2.1.
+
+	* NEWS: Remove notice of yytname change, since it was never in an
+	official release.
+	* data/glr.c (yydestroyGLRState): Rename local var to avoid shadowing
+	diagnostic.
+	* src/output.c (prepare): Likewise.
+	* data/lalr1.cc (YYERROR_VERBOSE_IF): New macro.
+	(yysyntax_error_): Use it to avoid GCC warning when YYERROR_VERBOSE
+	is not defined.  This is an awful hack, but it's enough for now.
+	All callers changed.
+	* tests/glr-regression-at (make_value): Args are const pointers now,
+	to avoid GCC warning.
+	(Duplicated user destructor for lookahead): New test.  Currently
+	skipped.  It fails on my host but I'm not sure it'll always fail.
+
+2005-09-16  Akim Demaille  <akim@epita.fr>
+
+	* src/symtab.h (struct symbol): Declare the printer and destructor
+	as const, to avoid accidental calls to free.
+	(symbol_destructor_set, symbol_printer_set): Adjust.
+	* src/symtab.c: Adjust.
+
+2005-09-16  Akim Demaille  <akim@epita.fr>
+
+	* data/c.m4 (b4_token_enums): New.
+	(b4_token_defines): Rename as...
+	(b4_token_enums_defines): this.
+	(b4_token_defines): New, output only the #defines.
+	* data/yacc.c, data/glr.c: Adjust.
+	* data/lalr1.cc: Use b4_token_enums instead of b4_token_enums_defines.
+	* data/c.m4 (b4_yydestruct_generate, b4_yysymprint_generate): Define
+	as default values.
+
+2005-09-16  Akim Demaille  <akim@epita.fr>
+
+	* data/lalr1.cc (yylex_): Remove, inline its code.
+	(yyreport_syntax_error_): Remove, replaced by...
+	(yysyntax_error_): this which returns a string and leaves to the
+	caller the call to the users' error function.
+	(yylooka_, yyilooka_, yylval, yylloc, yyerror_range_, yyval, yyloc):
+	Move from members of the parser object...
+	(yylooka, yyilooka, yylval, yylloc, yyerror_range, yyval, yyloc):
+	to local variables of the parse function.
+
+2005-09-16  Akim Demaille  <akim@epita.fr>
+
+	* doc/bison.texinfo (Calc++ Parser): Don't promote defining YYEOF
+	since it's in Bison's name space.
+
+2005-09-15  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/glr.c (yyresolveValue): Add default case to pacify
+	gcc -Wswitch-default.  Problem reported by twlevo@xs4all.nl.
+
+	* NEWS: Document when yyparse started to return 2.
+	* doc/bison.texinfo (Parser Function): Document when yyparse
+	returns 2.
+
+	* data/lalr1.cc: Revert part of previous change, as it's incompatible.
+	(b4_filename_type): Renamed back from b4_file_name_type.  All uses
+	changed.
+	(class position): file_name -> filename (reverting).  All uses changed.
+
+2005-09-14  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* examples/calc++/Makefile.am ($(calc_sources_generated)): Don't
+	do anything if $@ exists.  This reverts part of the 2005-07-07
+	patch.
+
+2005-09-11  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* Makefile.am (EXTRA_DIST): Do not distribute REFERENCES; it
+	contains obsolete information and isn't worth distributing as a
+	separate file anyway.
+	* data/glr.c [defined YYSETJMP]: Don't include <setjmp.h>.
+	(YYJMP_BUF, YYSETJMP, YYLONGJMP) [!defined YYSETJMP]: New macros.
+	All uses of jmp_buf, setjmp, longjmp changed to use these instead.
+	(yyparse): Abort if user code uses longjmp to throw an unexpected
+	value.
+
+2005-09-09  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/c.m4 (b4_identification): Define YYBISON_VERSION.
+	Suggested by twlevo@xs4all.nl.
+
+	* data/glr.c (YYCHK1): Do not assume YYE is in range.
+	This avoids a diagnostic from gcc -Wswitch-enum.
+	Problem reported by twlevo@xs4all.nl.
+
+	* doc/bison.texinfo: Don't use "filename", as per GNU coding
+	standards.  Use "file name" or "file" or "name", depending on
+	the context.
+	(Invocation): The output of "bison hack/foo.y" goes to foo.tab.c,
+	not to hack/foo.tab.c.
+	(Calc++ Top Level): 2nd arg of main is not const.
+	* data/glr.c: b4_filename -> b4_file_name.
+	* data/lalr1.cc: Likewise.  Also, b4_filename_type -> b4_file_name_type.
+	All uses changed.
+	(class position): filename -> file_name.  All uses changed.
+	* data/yacc.c: b4_filename -> b4_file_name.
+	* lib/bitset.h: filename -> file_name in local vars.
+	* lib/bitset_stats.c: Likewise.
+	* src/files.c: Likewise.
+	* src/scan-skel.l ("@output ".*\n): Likewise.
+	* src/files.c (file_name_split): Renamed from filename_split.
+	* src/muscle_tab.c (muscle_init): Output b4_file_name, not b4_filename.
+
+2005-09-08  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* lib/.cvsignore: Add pipe-safer.c, stdio--.h, unistd--.h,
+	to accommodate latest gnulib.
+
+	* tests/glr-regression.at (Duplicate representation of merged trees):
+	Add casts to pacify g++.  Problem reported by twlevo@xs4all.nl.
+
+	* bootstrap: Add comment as to why the AM_LANGINFO_CODESET hack is
+	needed.
+
+2005-08-26  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/glr.c (yydestroyGLRState): Renamed from yydestroyStackItem.
+	All uses changed.  Invoke user destructor after an error during a
+	split parse (trivial change from Joel E. Denny).
+
+	* tests/glr-regression.at
+	(User destructor after an error during a split parse):  New test case.
+	Problem reported by Joel E. Denny in:
+	http://lists.gnu.org/archive/html/bison-patches/2005-08/msg00029.html
+
+2005-08-25  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* README-cvs: Give URLs for recommended tools.
+	Mention Gzip version problem, and bootstrapping issues.
+	Remove troubleshooting section, as it's somewhat obsolete.
+
+	* bootstrap (no_cache): New var, to accommodate different wget
+	variants.  Use it instead of '-C off'.  Problem reported by
+	twlevo@xs4all.nl.
+
+	* data/glr.c (yydestroyStackItem): New function.
+	(yyrecoverSyntaxError, yyreturn): Use it to improve quality of
+	debugging information.  Problem reported by Joel E. Denny.
+
+2005-08-25  Akim Demaille  <akim@epita.fr>
+
+	* tests/local.at (AT_COMPILE_CXX): Pass $LINKS too.
+
+2005-08-24  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/glr.c (yyrecoverSyntaxError, yyreturn):
+	Don't invoke destructor on unresolved entries.
+	* tests/glr-regression.at
+	(User destructor for unresolved GLR semantic value): New test case.
+	Problem reported by Joel E. Denny in:
+	http://lists.gnu.org/archive/html/bison-patches/2005-08/msg00016.html
+
+2005-08-21  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* lib/.cvsignore: Remove realloc.c, strncasecmp.c, xstrdup.c.
+	Add strnlen.c.
+	* m4/.cvsignore: Remove codeset.m4, gettext.m4, lib-ld.m4,
+	lib-prefix.m4, po.m4.
+
+	* data/glr.c (yyreturn): Use "Cleanup:" rather than "Error:"
+	in yydestruct diagnostic, since it might not be an error.
+	Problem reported by Joel Denny near end of
+	<http://lists.gnu.org/archive/html/help-bison/2005-07/msg00040.html>.
+	* data/lalr1.cc (yyerturn): Likewise.
+	* data/yacc.c (yyreturn): Likewise.
+	* tests/calc.at (_AT_CHECK_CALC_ERROR): Adjust to the above change.
+
+	* src/files.c: Remove obsolete FIXME comment.
+
+	* data/glr.c (YY_SYMBOL_PRINT): Append a newline, for consistency
+	with the other templates, and to fix bogus run-on messages such
+	as the one reported at the end of
+	<http://lists.gnu.org/archive/html/help-bison/2005-07/msg00040.html>.
+	All callers changed to avoid the newline.
+	(yyprocessOneStack): Output two lines rather than one, to accommodate
+	the above change.  This changes the debug output format slightly.
+
+	* data/glr.c (yyresolveValue): Fix redundant parse tree problem
+	reported by Joel E. Denny in
+	<http://lists.gnu.org/archive/html/bison-patches/2005-08/msg00004.html>
+	(trivial change).
+	* tests/glr-regression.at (Duplicate representation of merged trees):
+	New test, from Joel E. Denny in:
+	<http://lists.gnu.org/archive/html/help-bison/2005-07/msg00013.html>.
+	* THANKS: Add Joel E. Denny.
+
+	* configure.ac (AC_INIT): Bump to 2.0c.
+
+2005-07-24  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* NEWS: Version 2.0b.
+
+	* Makefile.am (SUBDIRS): Put examples before tests, so that
+	"make check" doesn't finish with "All 1 tests passed".
+
+	* tests/regression.at (Token definitions): Don't rely on
+	AT_PARSER_CHECK for data that contains backslashes.  It currently
+	uses 'echo', and 'echo' isn't portable if its argument contains
+	backslashes.  Problem found on OpenBSD 3.4.  Also, do not assume
+	that the byte '\0xff' is not printable in the C locale; it is,
+	under OpenBSD 3.4 (!).  Luckily, '\0x80' through '\0x9e' are
+	not printable, so use '\0x81' to test.
+
+	* data/glr.c (YYOPTIONAL_LOC): Define even if it's not a recent
+	version of GCC, since the macro is used with non-GCC compilers.
+
+	Fix core dump reported by Pablo De Napoli in
+	<http://lists.gnu.org/archive/html/bug-bison/2005-07/msg00053.html>.
+	* tests/regression.at (Invalid inputs with {}): New test.
+	* src/parse-gram.y (token_name): Translate type before using
+	it as an index.
+
+	* data/glr.c (ATTRIBUTE_UNUSED): Remove, since it infringes on
+	the user's name space.  All uses changed to __attribute__
+	((__unused__)).
+	(yyFail, yyMemoryExhausted, yyreportAmbiguity):
+	Add __attribute__ ((__noreturn__)).
+
+	* etc/clcommit: Remove.  We weren't using it, and it failed
+	"make maintainer-distcheck".
+	* Makefile.maint: Merge from coreutils.
+	(CVS_LIST, CVS_LIST_EXCEPT): New macros.
+	(syntax-check-rules): Change list of rules as described below.
+	(sc_cast_of_alloca_return_value, sc_dd_max_sym_length):
+	(sc_file_system, sc_obsolete_symbols, sc_prohibit_atoi_atof):
+	(sc_prohibit_jm_in_m4, sc_root_tests, sc_tight_scope):
+	(sc_trailing_space): New rules.
+	(sc_xalloc_h_in_src): Remove.
+	(sc_cast_of_argument_to_free, sc_cast_of_x_alloc_return_value):
+	(sc_space_tab, sc_error_exit_success, sc_changelog):
+	(sc_system_h_headers, sc_sun_os_names, sc_unmarked_diagnostics):
+	(makefile-check, po-check, author_mark_check):
+	(makefile_path_separator_check, copyright-check):
+	Use grep -n, to make it easier to find violations.
+	Use CVS_LIST and CVS_LIST_EXCEPT.
+	(header_regexp, h_re): Remove.
+	(dd_c): New macro.
+	(sc_dd_max_sym_length, .re-list, news-date-check): New rules.
+	(my-distcheck): Use more-modern GCC flags.
+	(signatures, %.asc): Remove.
+	(rel-files, announcement): Remove signatures.
+	Restore old updating code, even though we don't use it, so
+	that we're the same as coreutils.
+	(alpha, beta, major): Depend on news-date-check.
+	Make the upload commands.
+
+	* data/c.m4, data/lalr1.cc, data/yacc.c: Normalize white space.
+	* lib/abitset.h, lib/bbitset.h, lib/bitset.h: Likewise.
+	* lib/bitset_stats.c, lib/ebitset.h, lib/lbitset.c: Likewise.
+	* lib/libitset.h, lib/timevar.c, lib/vbitset.h: Likewise.
+	* src/Makefile.am, src/gram.c, src/muscle_tab.h: Likewise.
+	* src/parse-gram.y, src/system.h, src/tables.c, src/vcg.c: Likewise.
+	* src/vcg_defaults.h, tests/cxx-type.at, tests/existing.at: Likewise.
+	* tests/sets.at: Likewise.
+
+	* data/m4sugar/m4sugar.m4: Sync from Autoconf, except that
+	we comment out the Autoconf version number.
+	* doc/bison.texinfo (Calc++ Scanner): Don't use atoi, as
+	it's error-prone and "make maintainer-distcheck" rejects it.
+
+	* lib/subpipe.c: Include <fcntl.h> without checking for HAVE_FCNTL_H.
+	Indent calls to "error" to pacify "make maintainer-distcheck",
+	when the calls are not intended to be translated.
+	* m4/subpipe.m4 (BISON_PREREQ_SUBPIPE): Don't check for fcntl.h.
+
+	* src/Makefile.am (DEFS): Use +=, to pacify
+	"make maintainer-distcheck".
+	(bison_SOURCES): Add scan-skel.h.
+	(sc_tight_scope): New rule, from coreutils.
+
+	* src/files.c (src_extension, header_extension):
+	Now static, not extern.
+	* src/getargs.c (short_options): Likewise.
+	* src/muscle_tab.c (muscle_table): Likewise.
+	* src/parse-gram.y (current_class, current_type, current_prec):
+	Likewise.
+	* src/reader.c (grammar_end, previous_rule_end): Likewise.
+	* src/getargs.h: Redo comments to pacify "make maintainer-distcheck".
+	* src/main.c (main): Cast bindtextdomain and textdomain calls to
+	void, to avoid warning when NLS is disabled.
+	* src/output.c: Include scan-skel.h.
+	(scan_skel): Remove decl, since scan-skel.h does this.
+	(output_skeleton):
+	Indent calls to "error" to pacify "make maintainer-distcheck".
+	* src/print_graph.c: Don't include <obstack.h>, as system.h does this.
+	* src/reader.h (gram_end, gram_lineno): New decls to pacify
+	"make maintainer-distcheck".
+	* src/scan-skel.l (skel_lex, skel_get_lineno, skel_get_in):
+	(skel_get_out, skel_get_leng, skel_get_text, skel_set_lineno):
+	(skel_set_in, skel_set_out, skel_get_debug, skel_set_debug):
+	(skel_lex_destroy, scan_skel): Move these decls to...
+	* src/scan-skel.h: New file.
+	* src/uniqstr.c (uniqstr_assert):
+	Indent calls to "error" to pacify "make maintainer-distcheck".
+
+	* tests/Makefile.am ($(srcdir)/package.m4): Use $(VAR),
+	not @VAR@.
+
+	* tests/torture.at: Revamp to avoid misuse of atoi that
+	"make maintainer-distcheck" complained about.
+
+	* examples/extexi (message): Don't print a message more than once,
+	and omit line-number decoration that makes Emacs compile think
+	that informative messages are worth worrying about.
+
+2005-07-22  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* configure.ac: Update version number.
+
+	* Makefile.am (SUBDIRS): Add examples; somehow this got removed
+	accidentally.
+	* examples/calc++/calc++-parser.yy: Remove from CVS, as it's
+	autogenerated by the maintainer.
+	* examples/calc++/.cvsignore: Add *.yy.
+
+	* lib/bitset.c (bitset_alloc): Don't cast xcalloc result.
+	* lib/bitset_stats.c (bitset_stats_init): Likewise.
+	* lib/bitsetv.c (bitsetv_alloc): Likewise.
+
+	* po/POTFILES.in: Add lib/xalloc-die.c; remove lib/xmalloc.c.
+
+	* src/relation.c (relation_transpose): Rewrite to avoid bogus complaint
+	from maintainer-distcheck about casting the argument of 'free'.
+
+	* NEWS: Mention recent yytname changes.
+	* THANKS: Add Anthony Heading, twlevo@xs4all.nl.
+
+	* bootstrap: For translations that have not yet been upgraded to
+	the new runtime-po domain, prime the pump by extracting the
+	relevant strings from the obsolete translations.  This code can be
+	removed once the bison-runtime domain has been translated by each
+	team.
+
+	* src/scan-gram.l (<SC_PRE_CODE>.): Don't double-quote token names,
+	now that token names are already quoted.
+
+	Fix problem reported by Anthony Heading.
+	* data/glr.c (YYTOKEN_TABLE): New macro.
+	(yytname): Define if YYTOKEN_TABLE.
+	* data/yacc.c (YYTOKEN_TABLE, yytname): Likewise.
+	* data/lalr1.cc (YYTOKEN_TABLE, yytname_): Likewise.
+	(YYERROR_VERBOSE): Define the same way the other skeletons do.
+	* src/output.c (prepare_symbols): Output token_table_flag.
+
+2005-07-21  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/glr.c (yyinitGLRStack, yyreturn): Don't call malloc
+	again if the first call fails.
+
+	* data/glr.c (yytnamerr): New function.
+	(yyreportSyntaxError): Use it to dequote most string literals.
+	* data/lalr1.c (yytname_): Renamed from yyname_, for compatibility
+	with other skeletons.  All uses changed.
+	(yytnameerr_): New function.
+	(yyreport_syntax_error): Use it to dequote most string literals.
+	* data/yacc.c (yytnamerr): New function.
+	(yyerrlab): Use it to decode most string literals.
+	* doc/bison.texinfo (Decl Summary, Calling Convention):
+	Clarify quoting convention of yytname.
+	* src/output.c (prepare_symbols): Quote all names.  This undoes
+	the 2005-04-17 change, which is now accomplished (mostly) via
+	changes in the parsers as described above.
+	* tests/regression.at (Token definitions, Web2c Actions):
+	Undo most 2005-04-17 change here, too.
+
+2005-07-20  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Fix more problems reported by twlevo@xs4all.nl.
+	* tests/cxx-type.at: Don't pipe output of ./types through sed to
+	remove trailing spaces.  This loses the exit status of ./types,
+	and isn't needed since ./types shouldn't be emitting trailing
+	spaces.
+	* data/glr.c (yyreturn): Don't pop stack if yyinitStateSet failed,
+	as the stack isn't valid in that case.
+
+	* src/scan-gram.l (gram_get_lineno, gram_get_in, gram_get_out):
+	(gram_get_leng, gram_get_text, gram_set_lineno, gram_set_in):
+	(gram_set_out, gram_get_debug, gram_set_debug, gram_lex_destroy):
+	Add declarations to pacify "gcc -Wmissing-prototypes" when flex 2.5.31
+	is used.
+	* src/scan-skel.l (skel_get_lineno, skel_get_in, skel_get_out):
+	(skel_get_leng, skel_get_text, skel_set_lineno, skel_set_in):
+	(skel_set_out, skel_get_debug, skel_set_debug, skel_lex_destroy):
+	Likewise.
+
+	* tests/cxx-type.at (_AT_TEST_GLR_CXXTYPES): Work even with
+	overly-picky compilers that reject 'char *foo = "bar";'.
+
+	* src/symtab.c (SYMBOL_ATTR_PRINT, symbol_print): Direct output
+	to FILE * parameter, not to stderr.  This fixes a typo introduced
+	in the 2005-07-12 change.
+
+	* lib/subpipe.c (create_subpipe): Rewrite slightly to avoid
+	warnings from GCC 4.
+
+	* data/glr.c (yyexpandGLRStack, yyaddDeferredAction, yyexpandGLRStack):
+	(yyglrShiftDefer, yysplitStack):
+	Remove unused parameters b4_pure_formals.  All uses changed.
+	(yyglrShift): Remove unused parameters b4_user_formals.
+	All uses changed.
+	(yyglrReduce): Removed unused parameter yylocp.  All uses changed.
+
+2005-07-18  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Destructor cleanups and regularization among the three skeletons.
+	* NEWS: Document the behavior changes.
+	* data/glr.c (yyrecoverSyntaxError): Don't bother to pop the
+	stack before failing, as the cleanup code will do it for us now.
+	* data/lalr1.cc (yyerrlab): Likewise.
+	* data/glr.c (yyparse): Pop everything off the stack before
+	freeing it, so that destructors get called properly.
+	* data/lalr1.cc (yyreturn): Likewise.
+	* data/yacc.c (yyreturn): Pop and destroy the start symbol, too.
+	This is more consistent.
+	* doc/bison.texinfo (Destructor Decl): Mention more reasons
+	why destructors might be called.  1.875 -> 2.1.
+	(Destructor Decl, Decl Summary, Table of Symbols):
+	Some English-language cleanups for %destructor.
+	* tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR):
+	Add output line for destructor of start symbol.
+	* tests/calc.at (AT_CHECK_CALC): Add one to line counts,
+	because of that same extra output line.
+
+	* NEWS: Document minor wording changes in diagnostics of
+	Bison-generated parsers.
+	* data/glr.c (yyMemoryExhausted): Renamed from yyStackOverflow.
+	Remove unused formals.  All uses changed.
+	(yyreportAmbiguity): "ambiguity detected" -> "syntax is ambiguous".
+	(yyparse): Rename yyoverflowlab to yyexhaustedlab.
+	* data/yacc.c (yyparse): "parser stack overflow" -> "memory exhausted".
+	Rename yyoverflowab to yyexhaustedlab.
+	When memory exhaustion occurs during syntax-error reporting,
+	report it separately rather than in a single diagnostic; this
+	eases translation.
+	* doc/bison.texinfo (Memory Management): Renamed from Stack Overflow.
+	(Memory Exhausted): Renamed from Parser Stack Overflow.
+	Revamp wording slightly to prefer "memory exhaustion".
+	* tests/actions.at: "parser stack overflow" -> "memory exhausted".
+
+	* data/c.m4 (b4_yysymprint_generate): Use YYFPRINTF, not fprintf.
+
+	Add i18n support to the GLR skeleton.  Partially fix the C++
+	skeleton; a C++ expert needs to finish this.  Remove debugging
+	msgids; there's little point to having them translated, since they
+	can be understood only by someone who can read the
+	(English-language) source code.
+
+	Generate runtime-po/bison-runtime.pot automatically, so that we
+	don't have to worry about garbage getting in that file.  We'll
+	make sure after the next official release that old msgids don't
+	get lost.  See
+	<http://lists.gnu.org/archive/html/bison-patches/2005-07/msg00119.html>.
+
+	* runtime-po/Makefile.in.in, runtime-po/bison-runtime.pot: Remove.
+	Now auto-generated.
+	* PACKAGING: Don't claim that Gawk, GCC, Perl use this method yet.
+	Fix typos in explanations of the runtime file.
+	* bootstrap: Change gettext keyword from YYI18N to YY_.
+	Use standard Makefile.in.in in runtime-po, since we'll arrange
+	for backward-compatible bison-runtime.po files in a different way.
+	* data/glr.c (YY_): New macro, from yacc.c.
+	(yyuserAction, yyreportAmbiguity, yyreportSyntaxError, yyparse):
+	Translate messages intended for users.
+	(yyreportSyntaxError): Change "virtual memory" to "memory" to match
+	the wording in the other skeletons.  We don't know that the memory
+	is virtual.
+	* data/lalr1.cc (YY_): Renamed from _.  All uses changed.
+	Use same method that yacc.c uses.
+	Don't translate debugging messages.
+	(yy::yyreport_syntax_error): Put in a FIXME for the i18n stuff;
+	it doesn't work (yet), and requires C++ expertise to fix.
+	* data/yacc.c (YY_): Renamed from YY18N.  All uses changed.
+	Move defn to a more logical place, to be consistent with other
+	skeletons.
+	Don't translate debugging messages.
+	Don't assume line numbers fit in unsigned int; use unsigned long fmts.
+	* doc/bison.texinfo: Mention <libintl.h>.  Change glibc cross reference
+	to gettext cross reference.  Add indexing terms.  Mention YYENABLE_NLS.
+	* runtime-po/POTFILES.in: Add data/glr.c, data/lalr1.cc.
+
+	Fix yyerror / yylex test glitches noted by twlevo@xs4all.nl.
+	* tests/cxx-type.at (_AT_TEST_GLR_CXXTYPES): Have yyerror return
+	void, not int.
+	* tests/glr-regression.at (Badly Collapsed GLR States):
+	Likewise.
+	(Improper handling of embedded actions and dollar(-N) in GLR parsers):
+	yylex should return 0 at EOF rather than aborting.
+
+	Improve tests for stack overflow in GLR parser.
+	Problem reported by twlevo@xs4all.nl.
+	* data/glr.c (struct yyGLRStack): Remove yyerrflag member.
+	All uses removed.
+	(yyStackOverflow): Just longjmp, but with value 2 so that caller
+	can handle the problem.
+	(YYCHK1): Use goto (a la yacc.c) rather than setting a flag.
+	(yyparse): New local variable yyresult to record the result.
+	Use result of setjmp to set it, rather than storing itinto
+	struct.
+	(yyDone): Remove label.
+	(yyacceptlab, yyabortlab, yyoverflowlab, yyreturn): New labels,
+	to mimic yacc.c.  Do not discard lookahead if it's EOF (possible
+	if YYABORT is used).
+	* tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Exit with
+	yyparse status; put status > 1 into diagnostic.
+	Check that status==2 works.
+	* tests/calc.at, tests/cxx-type.at, tests/glr-regression.at:
+	Use exit status 3 for failure to open (which shouldn't happen).
+
+2005-07-17  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* tests/conflicts.at (%nonassoc and eof):  Don't exit with status
+	1 on syntax error; just let yyparse do its thing.
+	* tests/glr-regression.at (Badly Collapsed GLR States): Likewise.
+	* tests/torture.at (AT_DATA_STACK_TORTURE): Likewise.
+	(Exploding the Stack Size with Alloca):
+	(Exploding the Stack Size with Malloc):
+	Expect exit status 2, not 1, since the parser is supposed to blow
+	its stack.  Problem reported by twlevo@xs4all.nl.
+
+	* data/glr.c (yyparse): Don't assume that the initial calls
+	to YYMALLOC succeed; in that case, yyparse incorrectly returned 0.
+	Print a stack-overflow message and fail instead.
+	Initialize the line-number information before creating the stack,
+	so that the stack-overflow message can report line zero safely.
+
+2005-07-14  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Fix problems reported by twlevo@xs4all.nl.
+	* data/glr.c (YYSTACKEXPANDABLE): Don't define if already defined.
+	(yyuserMerge): Provide a default case if b4_mergers is empty.
+	* tests/cxx-type.at (_AT_TEST_GLR_CXXTYPES): Define YYSTACKEXPANDABLE.
+	* tests/glr-regression.at
+	(Improper handling of embedded actions and dollar(-N) in GLR parsers):
+	Add casts to pacify C++ compilers.
+	* tests/glr-regression.at (Improper merging of GLR delayed action
+	sets): Declare yylex before using it.
+	* tests/Makefile.am (maintainer-check-g++): Fix a stray
+	$(GXX) that escaped the renaming of GXX to CXX.  Remove bogus
+	test for valgrind; valgrind is independent of g++.
+	(maintainer-check-posix): Add _POSIX2_VERSION=200112, to check
+	for compatibility with POSIX 1003.1-2001 (if running coreutils).
+	* tests/cxx-type.at (_AT_TEST_GLR_CXXTYPES): Port to stricter C++.
+	Use a destructor, so that we can expand the stack.  Change
+	YYSTYPE to char * so that we can free it.  Cast result of malloc.
+
+2005-07-13  Paul Hilfinger  <hilfingr@CS.Berkeley.EDU>
+
+	* data/glr.c (yyuserAction): Fix uninitialized variable that caused
+	a valgrind failure.  Problem reported by twlevo@xs4all.nl.
+
+2005-07-13  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* PACKAGING: New file, suggested by Bruno Haible and taken from
+	similar wording in gettext's PACKAGING file.
+	* NEWS: Mention PACKAGING.
+	* Makefile.am (EXTRA_DIST): Add PACKAGING.
+
+2005-07-12  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* NEWS: Document recent i18n improvements.
+	* bootstrap: Get runtime translations into runtime-po.
+	Create runtime-po files automatically, if possible.
+	* configure.ac: Invoke BISON_I18N, so that we eat our own dog food.
+	* data/yacc.c: Rewrite inclusion of <libintl.h> so that ENABLE_NLS
+	does not infringe on the user's name space.
+	(YYENABLE_NLS): Renamed from ENABLE_BISON_NLS.
+	* doc/bison.texinfo (Internationalization): Revamp the English
+	and Texinfo syntax a bit, to try to make it clearer.
+	(Bison Options, Option Cross Key): Mention --print-localedir.
+	* m4/bison-i18n.m4 (BISON_I18N): Rename ENABLE_BISON_NLS to
+	YYENABLE_NLS.  Quote a bit more.
+	* runtime-po/.cvsignore: New file.
+	* runtime-po/Makefile.in.in (mostlyclean): Remove *.old.pot.
+	* runtime-po/Rules-quot: Remove; now created by bootstrap.
+	* runtime-po/quot.sed: Likewise.
+	* runtime-po/boldquot.sed: Likewise.
+	* runtime-po/en@quot.header: Likewise.
+	* runtime-po/en@boldquot.header: Likewise.
+	* runtime-po/insert-header.sin: Likewise.
+	* runtime-po/remove-potcdate.sin: Likewise.
+	* runtime-po/Makevars: Likewise.
+	* runtime-po/LINGUAS: Likewise.
+	* runtime-po/de.po: Likewise; we will rely on the translation project
+	to maintain this, so "bootstrap" should get it.
+	* src/getarg.c (PRINT_LOCALEDIR_OPTION): Let the C compiler determine
+	its value.
+	* src/main.c (main): Bind the bison-runtime domain, too.
+
+2005-07-12  Bruno Haible  <bruno@clisp.org>
+
+	* data/yacc.c: Include <libintl.h> when NLS is enabled.
+	(YYI18N): Renamed from _. Use dgettext when NLS is enabled.
+	* po/POTFILES.in: Remove autogenerated file src/parse-gram.c.
+	* runtime-po: New directory.
+	* runtime-po/Makefile.in.in: New file, copied from po/, with modified
+	$(DOMAIN).pot-update rule, so that old messages are never dropped.
+	* runtime-po/Rules-quot: New file, copied from po/.
+	* runtime-po/quot.sed: Likewise.
+	* runtime-po/boldquot.sed: Likewise.
+	* runtime-po/en@quot.header: Likewise.
+	* runtime-po/en@boldquot.header: Likewise.
+	* runtime-po/insert-header.sin: Likewise.
+	* runtime-po/remove-potcdate.sin: Likewise.
+	* runtime-po/Makevars: New file.
+	* runtime-po/POTFILES.in: New file.
+	* runtime-po/LINGUAS: New file.
+	* runtime-po/bison-runtime.pot: New file.
+	* runtime-po/de.po: New file.
+	* m4/bison.m4: New file.
+	* Makefile.am (SUBDIRS): Add runtime-po.
+	(aclocaldir, aclocal_DATA): New variables.
+	* configure.ac: Add AC_CONFIG_FILES of runtime-po/Makefile.in.
+	Define aclocaldir.
+	* src/getargs.c (usage): Document --print-localedir option.
+	(PRINT_LOCALEDIR_OPTION): New enum item.
+	(long_options): Add --print-localedir option.
+	(getargs): Handle --print-localedir option.
+	* doc/bison.texinfo (Bison Parser): Remove paragraph about _().
+	(Internationalization): New section.
+
+2005-07-12  Akim Demaille  <akim@epita.fr>
+
+	* src/symtab.h, src/symtab.c (symbol_print): Swap the arguments,
+	for consistency with the rest of the code.
+	* src/symlist.h, src/symlist.c (symbol_list_print): Ditto.
+	Add separators.
+
+2005-07-12  Akim Demaille  <akim@epita.fr>
+
+	* src/parse-gram.y: Use %printer instead of YYPRINT.
+
+2005-07-12  Akim Demaille  <akim@epita.fr>
+
+	* src/symtab.h, src/symtab.c (symbol_print): New.
+	* src/symlist.h, src/symlist.c (symbol_list_print): New.
+	* src/symlist.c (symbol_list_n_type_name_get): Report the culprit.
+
+2005-07-12  Akim Demaille  <akim@epita.fr>
+
+	* data/glr.c (b4_syncline): Fix (swap) the definitions of
+	b4_at_dollar and b4_dollar_dollar.
+
+2005-07-11  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* doc/bison.texinfo (Mystery Conflicts): Add reference to DeRemer
+	and Pennello's paper.
+
+2005-07-09  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/yacc.c (yyparse): Undo previous patch.  Instead,
+	set yylsp[0] and yyvsp[0] only if the initial action
+	sets yylloc and yylval, respectively.
+
+	* data/yacc.c (yyparse): In the initial action, set
+	yylsp[0] and yyvsp[0] rather than yylloc and yylval.
+	This avoids the use of undefined variables if the initial
+	action does not set yylloc and/or yylval.
+
+2005-07-07  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* examples/calc++/calc++-driver.cc, examples/calc++/calc++-driver.hh:
+	* examples/calc++/calc++-scanner.ll, examples/calc++/calc++.cc:
+	Remove from CVS.  These files are automatically generated.
+	* examples/extexi: Clarify that this file is now part of Bison,
+	not GNU M4, and that it works with any POSIX-compatible Awk.
+	* examples/calc++/Makefile.am (run_extexi): Remove; not used.
+	($(calc_extracted)): Renamed from $(calc_sources_extracted),
+	so that we also get calc++-parser.yy.  Geneate it.
+	Use $(AWK), not gawk, since any conforming Awk will do.
+	Put comment before action, since older 'make' can't handle comment
+	in action.
+	$(BUILT_SOURCES): List all built sources, not just some of them.
+	$(MAINTAINERCLEANFILES): Remove *.stamp, and all built sources.
+	$($(srcdir)/calc++-parser.stamp): Work even if POSIXLY_CORRECT.
+	$($(calc_sources_generated)): Remove unnecessary test for existence
+	of target.  (This had a shell syntax error anyway; a stray "x".)
+	(calc_extracted): List $(srcdir)/calc++-parser.yy, not
+	calc++-parser.yy.
+	* examples/.cvsignore, examples/calc++/.cvsignore: New files.
+
+	* bootstrap (gnulib_modules): Add gettext, now that it's no longer
+	implied by the other modules.
+
+2005-07-06  Akim Demaille  <akim@epita.fr>
+
+	Bind examples/calc++ to the package.
+	* examples/calc++/Makefile: Remove, replaced by...
+	* examples/calc++/Makefile.am: ... this new file.
+	* examples/calc++/test: Remove input.
+	* examples/calc++/compile: Remove.
+	* examples/Makefile.am: New.
+	* configure.ac, Makefile.am: Adjust.
+	* doc/Makefile.am (clean-local): New, for more recent texi2dvis.
+
+2005-07-05  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/glr.c (yyFail): Drastically simplify; since the format argument
+	never had any % directives, we can simply pass it to yyerror.
+	(yyparse): Use "t a; a=b;" rather than "t a = b;" when a will
+	be modified later, as that is the usual style in glr.c.
+	Problems reported by Paul Hilfinger.
+
+	Rewrite GLR parser to catch more buffer overrun, storage exhaustion,
+	and size overflow errors.
+	* data/glr.c: Include <stdio.h> etc. after user prolog, not before,
+	in case the user prolog sets feature-test macros like _GNU_SOURCE.
+	(YYSIZEMAX): New macro.
+	(yystpcpy): New function, taken from yacc.c.
+	(struct yyGLRStack.yyspaceLeft): Now size_t, not int.
+	(yyinitGLRStack, yyfreeGLRstack): Remove unnecessary forward decls,
+	so that we don't have to maintain their signatures.
+	(yyFail): Check for buffer overflow, by using vsnprintf rather
+	than vsprintf.  Allocate a bigger buffer if possible.
+	Report an error if buffer allocation fails.
+	(yyStackOverflow): New function.
+	(yyinitStateSet, yyinitGLRStack): Return a boolean indicating whether
+	the initialization was successful.  It might fail if storage was
+	exhausted.
+	(yyexpandGLRStack): Add more checks for storage allocation failure.
+	Use yyStackOverflow to report failures.
+	(yymarkStackDeleted, yyglrShift, yyglrShiftDefer, yydoAction):
+	(yysplitStack, yyprocessOneStack, yyparse, yypstack):
+	Don't assume stack number fits in int.
+	(yysplitStack): Check for storage allocation failure.
+	(yysplitStack, yyprocessOneStack): Add pure_formals, so that we
+	can print diagnostics on storage allocation failure.  All callers
+	changed.
+	(yyresolveValue): Use yybool for boolean.
+	(yyreportSyntaxError): Check for size-calculation overflow.
+	This code is taken from yacc.c.
+	(yyparse): Check for storage allocation errors when allocating
+	the initial stack.
+
+2005-07-05  Akim Demaille  <akim@epita.fr>
+
+	Extract calc++ from the documentation.
+	* doc/bison.texinfo (Calc++): Add the extraction marks.
+	* examples/extexi: New, from the aborted GNU Programming 2E.
+	Separate the different paragraph of a file with empty lines.
+	* examples/Makefile: Use it to extract the whole calc++ example.
+
+2005-06-24  Akim Demaille  <akim@epita.fr>
+
+	* doc/bison.texinfo (C++ Parser Interface): Use defcv to define
+	class typedefs.
+
+2005-06-22  Akim Demaille  <akim@epita.fr>
+
+	* doc/bison.texinfo (C++ Language Interface): First stab.
+	(C++ Parsers): Remove.
+
+2005-06-22  Akim Demaille  <akim@epita.fr>
+
+	* data/lalr1.cc (yylex_): Honor %lex-param.
+
+2005-06-22  Akim Demaille  <akim@epita.fr>
+
+	Start a set of simple examples.
+	* examples/calc++/Makefile, examples/calc++/calc++-driver.cc,
+	* examples/calc++/calc++-driver.hh,
+	* examples/calc++/calc++-parser.yy,
+	* examples/calc++/calc++-scanner.ll, examples/calc++/calc++.cc,
+	* examples/calc++/compile, examples/calc++/test: New.
+
+2005-06-09  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/yacc.c (malloc, free) [defined __cplusplus]: Wrap inside
+	extern "C" {}.  This fixes a problem reported by Paul Hilfinger,
+	which stems from the 2005-05-27 patch.
+
+2005-06-06  Paul Hilfinger  <hilfingr@tully.CS.Berkeley.EDU>
+
+	* data/glr.c: Modify treatment of unused parameters to permit use
+	of g++ (which doesn't allow __attribute__ ((unused)) for parameters).
+
+2005-05-30  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Fix infringement on user name space reported by Janos Zoltan Szabo.
+	* data/yacc.c (yyparse): strlen -> yystrlen.
+
+2005-05-30  Akim Demaille  <akim@epita.fr>
+
+	* data/lalr1.cc (_): New.
+	Translate the various messages.
+
+2005-05-27  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Fix infringement on user name space reported by Bruno Haible.
+	* data/yacc.c (YYSIZE_T): Define first, so that later decls can use it.
+	Prefer GCC's __SIZE_TYPE__ if available, so that we don't infringe on
+	the user's name space.
+	(alloca): Include <stdlib.h> to get it, if it's not built in.
+	(YYMALLOC, YYFREE): Define only if needed.
+	(malloc, free): Declare, but only if needed, as this infringes on
+	the user name space.
+
+2005-05-25  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Fix BeOS, FreeBSD, MacOS porting problems reported by Bruno Haible.
+	* lib/bitset.c (bitset_print): Don't assume size_t can be printed
+	with %d format.
+	* lib/ebitset.c (min, max): Undef before defining.
+	* lib/vbitset.c (min, max): Likewise.
+	* lib/subpipe.c (create_subpipe): Save local variables in case
+	vfork clobbers them.
+
+2005-05-24  Bruno Haible  <bruno@clisp.org>
+
+	* tests/synclines.at (AT_SYNCLINES_COMPILE): Add support for the
+	error message syntax used by gcc-4.0.
+
+2005-05-23  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* README: Mention m4 1.4.3.  Remove obsolete advice about
+	Sun Forte Developer 6 update 2, VMS, and MS-DOS.
+
+	* bootstrap: Remove workaround for problem I encountered with
+	gettext 0.14.1; it seems to be fixed now.
+
+2005-05-22  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* NEWS: Version 2.0a.
+
+	* src/files.c: Include "stdio-safer.h"; this fixes a typo in
+	the previous change.
+
+	Various maintainer cleanups.
+	* .cvsignore: Add a.exe, a.out, b.out,, conf[0-9]*, confdefs*,
+	conftest*, for benefit of CVS commands run at the same time as
+	"configure".  Add build-aux, since "bootstrap" now creates it and
+	its subfiles.
+	* Makefile.cfg (move_if_change): Remove.
+	* Makefile.maint: Remove the update stuff; we now use "bootstrap".
+	(ftp-gnu, www-gnu, move_if_change, local_updates, update):
+	(po_repo, do-po-update, po-update, wget_files, get-targets):
+	(config.guess-url_prefix, config.sub-url_prefix):
+	(ansi2knr.c-url_prefix, texinfo.tex-url_prefix):
+	(standards.texi-url_prefix, make-stds.texi-url_prefix, taget, url):
+	($(get-targets), cvs-files, automake_repo, wget-update, cvs-update):
+	Remove.
+	* configure.ac (AC_CONFIG_AUX_DIR): Change from config to build-aux;
+	this is now the recommended name.
+	* config/.cvsignore: Remove config.guess, config.rpath, config.sub,
+	depcomp, install-sh, mdate-sh, missing, mkinstalldirs, texinfo.tex,
+	ylwrap.  These files now go into build-aux.
+	* config/move-if-change: Remove.
+	* config/prev-version.txt: Bump from 1.75 to 2.0.
+
+	* bootstrap: Add stdio-safer, unistd-safer modules.
+	Remove m4/glibc2.m4 (introduced by latest gnulib, but
+	we don't need it).
+	* lib/.cvsignore: Add dup-safer.c, fd-safer.c,
+	fopen-safer.c, stdio-safer.h, unistd-safer.h.
+	* lib/subpipe.c: Include "unistd-safer.h".
+	(create_subpipe): Make sure all the newly-created
+	file descriptors are > 2, so that diagnostics don't
+	get sent down them (which might cause Bison to hang, in theory).
+	* m4/.cvsignore: Add stdio-safer.m4, unistd-safer.m4.
+	* src/files.c (xfopen): Use fopen_safer, not fopen.
+
+	* data/lalr1.cc (yy::]b4_parser_class_name[::parse): Port
+	yesterday's yacc.c fix.
+
+2005-05-21  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/glr.c, data/lalr1.cc: Update copyright date.
+
+	Fix a destructor bug reported by Wolfgang Spraul in
+	<http://lists.gnu.org/archive/html/bug-bison/2005-05/msg00042.html>.
+	* data/yacc.c (yyabortlab): Don't call destructor, and
+	don't set yychar to EMPTY.
+	(yyoverflowlab): Don't call destructor.
+	(yyreturn): Call destructor, if yychar is neither YYEOF nor YYEMPTY.
+	* tests/calc.at (AT_CHECK_CALC): Expect one fewer output lines,
+	since we no longer output the message "discarding lookahead token
+	end of input ()".
+
+2005-05-20  Paul Hilfinger  <hilfingr@CS.Berkeley.EDU>
+
+	* data/glr.c (YY_SYMBOL_PRINT): Don't print newline at end to
+	fix a small glitch in debugging output.
+	(yyprocessOneStack, yyrecoverSyntaxError, yyparse): Print newline
+	after YY_SYMBOL_PRINT where needed.
+
+	(struct yyGLRState): Add some comments.
+	(struct yySemanticOption): Add some comments.
+	(union yyGLRStackItem): Add comment.
+
+	(yymergeOptionSets): Correct this to properly perform the union,
+	avoiding infinite reported by Michael Rosien.
+	Update comment.
+
+	* tests/glr-regression.at: Add test for GLR merging error reported
+	by M. Rosien.
+
+2005-05-13  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* COPYING, ChangeLog, GNUmakefile, HACKING, Makefile.am,
+	Makefile.cfg, Makefile.maint, NEWS, README, README-alpha,
+	README-cvs, TODO, bootstrap, configure.ac, data/Makefile.am,
+	data/README, data/c.m4, data/glr.c, data/lalr1.cc, data/yacc.c,
+	data/m4sugar/m4sugar.m4, doc/Makefile.am, doc/bison.texinfo,
+	doc/fdl.texi, doc/gpl.texi, doc/refcard.tex, lib/Makefile.am,
+	lib/abitset.c, lib/abitset.h, lib/bbitset.h, lib/bitset.c,
+	lib/bitset.h, lib/bitset_stats.c, lib/bitset_stats.h,
+	lib/bitsetv-print.c, lib/bitsetv-print.h, lib/bitsetv.c,
+	lib/bitsetv.h, lib/ebitset.c, lib/ebitset.h, lib/get-errno.c,
+	lib/get-errno.h, lib/lbitset.c, lib/lbitset.h, lib/libiberty.h,
+	lib/main.c, lib/subpipe.c, lib/subpipe.h, lib/timevar.c,
+	lib/timevar.def, lib/timevar.h, lib/vbitset.c, lib/vbitset.h,
+	lib/yyerror.c, m4/cxx.m4, m4/m4.m4, m4/subpipe.m4, m4/timevar.m4,
+	m4/warning.m4, src/LR0.c, src/LR0.h, src/Makefile.am, src/assoc.c,
+	src/assoc.h, src/closure.c, src/closure.h, src/complain.c,
+	src/complain.h, src/conflicts.c, src/conflicts.h, src/derives.c,
+	src/derives.h, src/files.c, src/files.h, src/getargs.c,
+	src/getargs.h, src/gram.c, src/gram.h, src/lalr.c, src/lalr.h,
+	src/location.c, src/location.h, src/main.c, src/muscle_tab.c,
+	src/muscle_tab.h, src/nullable.c, src/nullable.h, src/output.c,
+	src/output.h, src/parse-gram.c, src/parse-gram.h,
+	src/parse-gram.y, src/print.c, src/print.h, src/print_graph.c,
+	src/print_graph.h, src/reader.c, src/reader.h, src/reduce.c,
+	src/reduce.h, src/relation.c, src/relation.h, src/scan-gram.l,
+	src/scan-skel.l, src/state.c, src/state.h, src/symlist.c,
+	src/symlist.h, src/symtab.c, src/symtab.h, src/system.h,
+	src/tables.c, src/tables.h, src/uniqstr.c, src/uniqstr.h,
+	src/vcg.c, src/vcg.h, src/vcg_defaults.h, tests/Makefile.am,
+	tests/actions.at, tests/c++.at, tests/calc.at, tests/conflicts.at,
+	tests/cxx-type.at, tests/existing.at, tests/glr-regression.at,
+	tests/headers.at, tests/input.at, tests/local.at, tests/output.at,
+	tests/reduce.at, tests/regression.at, tests/sets.at,
+	tests/synclines.at, tests/testsuite.at, tests/torture.at:
+	Update FSF postal mail address.
+
+2005-05-11  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* tests/local.at (AT_COMPILE_CXX): Treat LDFLAGS like AT_COMPILE does.
+	Problem reported by Ralf Menzel.
+
+2005-05-01  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* tests/actions.at: Test that stack overflow invokes destructors.
+	From Marcus Holland-Moritz.
+	* data/yacc.c (yyerrlab): Move the code that destroys the stack
+	from here....
+	(yyreturn): to here.  That way, destructors are called properly
+	even if the stack overflows, or the user calls YYACCEPT or
+	YYABORT.  Stack-overflow problem reported by Marcus Holland-Moritz.
+	(yyoverflowlab): Destroy the lookahead.
+
+2005-04-24  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/yacc.c (YYSTACK_ALLOC_MAXIMUM): Add more-descriptive comment.
+
+2005-04-17  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* NEWS: Bison-generated C parsers no longer quote literal strings
+	associated with tokens.
+	* src/output.c (prepare_symbols): Don't escape strings,
+	since users don't want to see C escapes.
+	* tests/calc.at (AT_CHECK_CALC): Adjust to lack of quotes
+	in diagnostics.
+	* tests/input.at (Torturing the Scanner): Likewise.
+	* tests/regression.at (Token definitions, Web2c Actions): Likewise.
+
+2005-04-16  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* tests/torture.at (AT_INCREASE_DATA_SIZE): Skip the test if
+	the data size is known to be too small and we can't increase it.
+	This works around an HP-UX 11.00 glitch reported by Andrew Benham.
+
+2005-04-15  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* src/parse-gram.y: Include quotearg.h.
+	(string_as_id): Quote $1 before using it as a key, since the
+	lexer no longer quotes it for us.
+	(string_content): Don't strip quotes, since lexer no longer
+	quotes it for us.
+	* src/scan-gram.l: Include quotearg.h.
+	("\""): Omit quote.
+	("'"<SC_ESCAPED_CHARACTER>): Quote symbol before using it as
+	a key, since the rest of the lexer doesn't quote it.
+	* src/symtab.c (symbol_get): Don't quote symbol; caller does it now.
+	* tests/regression.at (Token definitions): Check for backslashes
+	in token strings.
+
+	* data/yacc.c (YYSTACK_ALLOC_MAXIMUM): New macro.
+	(YYSIZE_T): Define to unsigned long int when using an older compiler.
+	(yyparse): Revamp code to generate long syntax error message, to
+	make it easier to translate, and to avoid problems with arithmetic
+	overflow.  Change "virtual memory" to "memory" in diagnostic, since
+	we don't know whether the memory is virtual.
+
+2005-04-13  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* NEWS: Bison-generated C parsers now use the _ macro to
+	translate strings.
+	* data/yacc.c (_) [!defined _]: New macro.
+	All English strings wrapped inside this macro.
+	* doc/bison.texinfo (Bison Parser): Document _.
+	* po/POTFILES.in: Include src/parse-gram.c, since it now
+	includes translateable strings that parse-gram.y doesn't.
+
+2005-04-12  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* src/symtab.c (symbol_make_alias): Call symbol_type_set,
+	reverting the 2004-10-11 change to this function.
+	(symbol_check_alias_consistency): Don't call symbol_type_set
+	if the type name is already correct.
+	* tests/input.at (Typed symbol aliases): New test, from Tim Van Holder.
+
+2005-03-25  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* tests/regression.at (Token definitions): Don't use a token named
+	c, as that generates a "#define c ..." that runs afoul of buggy
+	stdlib.h that uses the identifier c as a member of struct
+	drand48_data.  Problem reported by Horst Wente.
+
+2005-03-21  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* bootstrap: Change translation URL from
+	http://www2.iro.umontreal.ca/~gnutra/po/maint/bison/ to
+	http://www.iro.umontreal.ca/translation/maint/bison/ to avoid
+	redirection glitches.  Problem reported by twlevo@xs4all.nl.
+
+2005-03-20  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* tests/local.at (AT_COMPILE, AT_COMPILE_CXX): Don't put options
+	after operands; POSIX says this isn't portable for the c99 command.
+
+2005-03-18  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* tests/glr-regression.at (glr-regr2a.y): Try to dump core
+	immediately if a data overrun has occurred; this may help us track
+	down what may be a spurious failure on MacOS.
+
+2005-03-17  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Respond to problems reported by twlevo@xs4all.nl.
+
+	* bootstrap: Use "trap - 0" rather than the unportable "trap 0".
+
+	* src/vcg.h: Comment fix.
+	* src/vcg_defaults.h: Parenthesize macro bodies to make them safe.
+	(G_CMAX): Change to -1 instead of INT_MAX.
+
+	* data/yacc.c (yyparse): Omit spaces before #line.
+
+2005-03-15  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* src/tables.c (state_number_to_vector_number): Put it inside an
+	"#if 0", since it's not currently used.  Problem reported by
+	Roland McGrath.
+
+2005-03-06  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* src/output.c (escaped_output): Renamed from
+	escaped_file_name_output, since we now use it for symbol tags as
+	well.  All uses changed.
+	(symbol_destructors_output, symbol_printers_output):
+	Escape symbol tags too.
+	Problem reported by Matyas Forstner in
+	<http://lists.gnu.org/archive/html/bug-bison/2005-03/msg00009.html>.
+
+	* src/muscle_tab.c (muscle_code_grow): Don't quote numbers; it's
+	not needed.
+	* src/output.c (user_actions_output, token_definitions_output,
+	symbol_destructors_output, symbol_printers_output): Likewise.
+	* src/reader.c (prologue_augment): Likewise.
+	* src/scan-gram.l (handle_action_dollar, handle_action_at): Likewise.
+
+	* src/vcg.c (output_edge): Don't quote linestyle arg.
+	Problem reported by twlevo@xs4all.nl.
+
+2005-02-28  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* doc/bison.texinfo (Semantic Tokens): Fix scoping problem in
+	example, reported by Derek M Jones.  Also, make the example even
+	more outrageous, to better illustrate how bad the problem is.
+
+2005-02-24  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* doc/bison.texinfo (Mfcalc Symtab): Correct the prototype for
+	putsym.  Typo reported by Sebastian Piping.
+
+2005-02-23  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* doc/bison.texinfo (Language and Grammar): some -> same
+	(Epilogue): int he -> in the
+	Typos reported by Sebastian Piping via Justin Pence.
+
+2005-02-07  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* tests/glr-regression.at (Improper handling of embedded actions
+	and dollar(-N) in GLR parsers): Renamed from "Improper handling of
+	embedded actions and $-N in GLR parsers", work around an Autoconf bug
+	with dollar signs in test names.
+	* tests/input.at (Invalid dollar-n): Renamed from "Invalid \$n",
+	for a similar reason.
+
+2005-01-28  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* src/vcg.c (output_graph): G_VIEW -> normal_view in case someone
+	wants to redefine G_VIEW.
+
+2005-01-27  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* src/vcg.c (get_view_str): Remove case for normal_view.
+	Problem reported by twlevo@xs4all.nl.
+
+2005-01-24  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* configure.ac (O0CFLAGS, O0CXXFLAGS): Fix quoting bug.
+	Problem reported by twlevo@xs4all.nl.
+
+	* doc/bison.texinfo: Change @dircategory from "GNU programming
+	tools" to "Software development".  Requested by Richard Stallman
+	via Karl Berry.
+
+2005-01-23  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* tests/c++.at (AT_CHECK_DOXYGEN): Don't use options after operands.
+	Problem reported by twlevo@xs4all.nl.
+
+2005-01-21  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/yacc.c (YYCOPY, yystpcpy, yyparse): Remove "register"
+	keyword; it's not needed with modern compilers, and it doesn't
+	affect correctness with older compilers.  Suggested by
+	twlevo@xs4all.nl.
+
+2005-01-17  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/glr.c (yyuserAction): Add "default: break;" case to pacify
+	gcc -Wswitch-default.
+	* data/lalr1.cc (yy::]b4_parser_class_name[::parse): Likewise.
+	* data/yacc.c (yyparse): Likewise.
+
+2005-01-12  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* src/system.h (OUTPUT_EXT, TAB_EXT): Define only if not defined
+	already.  Let config.h define any nonstandard values.
+
+2005-01-10  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* tests/calc.at (_AT_DATA_CALC_Y): Use alarm (100), not alarm (10),
+	for the benefit of slower hosts.  Problem reported by
+	Nelson H. F. Beebe.
+
+2005-01-07  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/yacc.c (yyparse): Pacify non-GCC compilers about yyerrorlab
+	being defined and not used.
+	* data/lalr1.cc (yyparse): Likewise.
+	Use "if (false)" rather than "if (0)".
+
+2005-01-05  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* TODO: Mention that we should allow NUL bytes in tokens.
+
+2005-01-02  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* src/scan-skel.l (<<EOF>>): Don't close standard output.
+	Problem reported by Hans Aberg.
+
+2005-01-01  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* src/getargs.c (version): Happy new year; update overall
+	program copyright date from 2004 to 2005.
+
+	* src/scan-skel.l ("@output ".*\n): Don't close standard output.
+	Problem reported by Hans Aberg.
+	* tests/output.at (AT_CHECK_OUTPUT): New arg SHELLIO.
+	(Output file names.): Add a test for the case when standard output
+	is closed.
+
+2004-12-26  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* doc/bison.texinfo (@copying): Update FDL version number to 1.2,
+	to fix an oversight in the Bison 2.0 manual.
+
+2004-12-25  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* NEWS: Version 2.0.  Reformat the existing news items since
+	1.875, so that related items are grouped together.
+	* configure.ac (AC_INIT): Bump version to 2.0.
+	* src/parse-gram.c, src/parse-gram.h: Regenerate with 2.0.
+
+	* tests/torture.at (Exploding the Stack Size with Alloca): Set
+	YYSTACK_USE_ALLOCA to 1 if __GNUC__ or alloca are defined;
+	otherwise, we're not testing alloca.  Unfortunately there's no
+	simple way to consult HAVE_ALLOCA here.
+
+	* data/lalr1.cc (yydestruct_): Pacify unused variable warning
+	for yymsg, too.
+
+	* src/LR0.c (new_itemsets): Use memset rather than zeroing by
+	hand.  This avoids a warning about comparing int to size_t when
+	GCC warnings are enabled.
+
+2004-12-22  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* NEWS: Bison-generated parsers no longer default to using the
+	alloca function (when available) to extend the parser stack, due
+	to widespread problems in unchecked stack-overflow detection.
+	* data/glr.c (YYMAXDEPTH): Remove undef when zero.  It's the user's
+	responsibility to set it to a positive value.  This lets the user
+	specify a value that is not a preprocessor constant.
+	* data/yacc.c (YYMAXDEPTH): Likewise.
+	(YYSTACK_ALLOC): Define only if YYSTACK_USE_ALLOCA is nonzero.
+	* doc/bison.texinfo (Stack Overflow): YYMAXDEPTH no longer needs
+	to be a compile-time constant.  However, explain the constraints on it.
+	Also, explain the constraints on YYINITDEPTH.
+	(Table of Symbols): Explain that alloca is no longer the default.
+	Explain the user's responsibility if they define YYSTACK_USE_ALLOCA
+	to 1.
+
+	* doc/bison.texinfo (Location Default Action): Mention that n must
+	be zero when k is zero.  Suggested by Frank Heckenbach.
+
+2004-12-22  Akim Demaille  <akim@epita.fr>
+
+	* data/lalr1.cc (parser::token_number_type, parser::rhs_number_type)
+	(parser::state_type, parser::semantic_type, parser::location_type):
+	Private, not public.
+	(parser::parse): Return ints, not bool.
+	Returning a bool introduces a problem: 0 corresponds to false, and
+	it seems weird to return false on success.  Returning true changes
+	the conventions for yyparse.
+	Alternatively we could return void and send an exception.
+	There is no clear consensus (yet?).
+	(state_stack, semantic_stack, location_stack): Rename as...
+	(state_stack_type, semantic_stack_type, location_stack_type): these.
+	Private, not public.
+	* tests/c++.at: New.
+	* tests/testsuite.at, tests/Makefile.am: Adjust.
+
+2004-12-21  Akim Demaille  <akim@epita.fr>
+
+	* data/lalr1.cc (parser::parse): Return a bool instead of an int.
+
+2004-12-21  Akim Demaille  <akim@epita.fr>
+
+	Don't impose std::string for filenames.
+
+	* data/lalr1.cc (b4_filename_type): New.
+	(position::filename): Use it.
+	(parser.hh): Move the inclusion of stack.hh and location.hh below
+	the user code, so that needed headers for the filename type can be
+	included first.
+	Forward declare them before the user code.
+	* tests/Makefile.am (check-local, installcheck-local): Pass
+	TESTSUITEFLAGS to the TESTSUITE.
+
+2004-12-20  Akim Demaille  <akim@epita.fr>
+
+	Use more STL like names: my_class instead of MyClass.
+
+	* data/lalr1.cc (LocationStack, LocationType, RhsNumberType)
+	(SemanticStack, SemanticType, StateStack, StateType)
+	(TokenNumberType, Stack, Slice, Traits, Parser::location)
+	(Parser::value): Rename as...
+	(location_stack, location_type, rhs_number_type, semantic_stack)
+	(semantic_type, state_stack, state_type, token_number_type, stack)
+	(slice, traits, parser::yylloc, parser::yylval): these.
+
+	* tests/calc.at, tests/regression.at, tests/actions.at: Adjust.
+
+2004-12-19  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/glr.c (YYLLOC_DEFAULT): Use GNU spacing conventions.
+	* data/yacc.c (YYLLOC_DEFAULT): Likewise.
+
+2004-12-17  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Remove uses of 'short int' and 'unsigned short int'.  This raises
+	some arbitrary limits.  It uses more memory but nowadays that's
+	not much of an issue.
+
+	This change does not affect the generated parsers; that's a different
+	task, as some users will want to conserve memory there.
+
+	Ideally we should use size_t to represent all object counts, and
+	something like ptrdiff_t to represent signed differences of object
+	counts; but that will require more code-cleanup than I have the
+	time to do right now.
+
+	* src/LR0.c (allocate_itemsets, new_itemsets, save_reductions):
+	Use size_t, not int or short int, to count objects.
+	* src/closure.c (nritemset, closure): Likewise.
+	* src/closure.h (nritemset, closure): Likewise.
+	* src/nullable.c (nullable_compute): Likewise.
+	* src/print.c (print_core): Likewise.
+	* src/print_graph.c (print_core): Likewise.
+	* src/state.c (state_compare, state_hash): Likewise.
+	* src/state.h (struct state): Likewise.
+	* src/tables.c (default_goto, goto_actions): Likewise.
+
+	* src/gram.h (rule_number, rule): Use int, not short int.
+	* src/output.c (prepare_rules): Likewise.
+	* src/state.h (state_number, STATE_NUMBER_MAXIMUM, transitions,
+	errs, reductions): Likewise.
+	* src/symtab.h (symbol_number, SYMBOL_NUMBER_MAXIMUM, struct symbol):
+	Likewise.
+	* src/tables.c (vector_number, tally, action_number,
+	ACTION_NUMBER_MINIMUM): Likewise.
+	* src/output.c (muscle_insert_short_int_table): Remove.
+
+2004-12-17  Akim Demaille  <akim@epita.fr>
+
+	* data/lalr1.cc: Extensive Doxygenation.
+	(error_): Rename as...
+	(error): this, since it is visible to the user.
+	Adjust callers.
+	(Parser::message): Now an automatic variable from...
+	(Parser::yyreport_syntax_error_): here.
+	* tests/actions.at, tests/calc.at, tests/regression.at: Adjust to
+	Parser::error.
+	* tests/input.at: Escape $.
+
+2004-12-16  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/glr.c (b4_lhs_value, b4_rhs_value, b4_rhs-location):
+	Parenthesize rhs to avoid obscure problems with mistakes like
+	"foo$$bar = foo$1bar;".  Problem reported by twlevo at xs4all.
+	* data/lalr1.cc (b4_lhs_value, b4_rhs_value, b4_lhs_location,
+	b4_rhs_location): Likewise.
+	* data/yacc.c (b4_lhs_value, b4_rhs_value, b4_lhs_location,
+	b4_rhs_location): Likewise.
+
+2004-12-16  Akim Demaille  <akim@epita.fr>
+
+	* data/lalr1.cc (yyreport_syntax_error_): Catch up with glr.c and
+	yacc.c: be sure to stay within yycheck_.
+	* tests/actions.at: Re-enable C++ tests.
+
+2004-12-16  Akim Demaille  <akim@epita.fr>
+
+	* src/print_graph.c (print_graph): Remove layoutalgorithm uses for
+	real.
+
+2004-12-16  Akim Demaille  <akim@epita.fr>
+
+	Use #define to handle the %name-prefix.
+
+	* data/glr.c, data/yacc.c: Comment changes.
+	* data/lalr1.cc (yylex): Use #define to select the name of yylex,
+	so that one can refer to yylex in the parser file, and have it
+	renamed, as is the case with other skeletons.
+
+2004-12-16  Akim Demaille  <akim@epita.fr>
+
+	Move lalr1.cc internals into yy*.
+
+	* data/lalr1.cc (semantic_stack_, location_stack_, state_stack_)
+	(semantic_stack_, location_stack_, pact_, pact_ninf_, defact_)
+	(pgoto_, defgoto_, table_, table_ninf_, check_, stos_, r1_, r2_)
+	(name_, rhs_, prhs_, rline_, token_number_, eof_, last_, nnts_)
+	(empty_, final_, terror_, errcode_, ntokens_)
+	(user_token_number_max_, undef_token_, n_, len_, state_, nerrs_)
+	(looka_, ilooka_, error_range_, nerrs_):
+	Rename as...
+	(yysemantic_stack_, yylocation_stack_, yystate_stack_)
+	(yysemantic_stack_, yylocation_stack_, yypact_, yypact_ninf_)
+	(yydefact_, yypgoto_, yydefgoto_, yytable_, yytable_ninf_)
+	(yycheck_, yystos_, yyr1_, yyr2_, yyname_, yyrhs_, yyprhs_)
+	(yyrline_, yytoken_number_, yyeof_, yylast_, yynnts_, yyempty_)
+	(yyfinal_, yyterror_, yyerrcode_, yyntokens_)
+	(yyuser_token_number_max_, yyundef_token_, yyn_, yylen_, yystate_)
+	(yynerrs_, yylooka_, yyilooka_, yyerror_range_, yynerrs_):
+	these.
+
+2004-12-15  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Fix some problems reported by twlevo at xs4all.
+	* src/symtab.c (symbol_new): Report an error if the input grammar
+	contains too many symbols.  This is better than calling abort() later.
+	* src/vcg.h (enum layoutalgorithm): Remove.  All uses removed.
+	(struct node, struct graph):
+	Rename member expand to stretch.  All uses changed.
+	(struct graph): Remove member layoutalgorithm.  All uses removed.
+	* src/vcg.c (get_layoutalgorithm_str): Remove.  All uses removed.
+	* src/vcg_defaults.h (G_STRETCH): Renamed from G_EXPAND.
+	All uses changed.
+	(N_STRETCH): Rename from N_EXPAND.  All uses changed.
+
+2004-12-15  Akim Demaille  <akim@epita.fr>
+
+	* data/lalr1.cc: Normalize /** \brief ... */ to ///.
+	Add more Doxygen comments.
+	(symprint_, stack_print_, reduce_print_, destruct_, pop)
+	(report_syntax_error_, translate_): Rename as...
+	(yysymprint_, yystack_print_, yyreduce_print_, yydestruct_)
+	(yypop_, yyreport_syntax_error_, yytranslate_): this.
+
+2004-12-15  Akim Demaille  <akim@epita.fr>
+
+	* data/lalr1.cc (lex_): Rename as...
+	(yylex_): this.
+	Move the trace here.
+	Take the %name-prefix into account.
+	Reported by Alexandre Duret-Lutz.
+
+2004-12-15  Akim Demaille  <akim@epita.fr>
+
+	Simplify the C++ parser constructor.
+
+	* data/lalr1.cc (debug_): Rename as...
+	(yydebug_): so that the parser's internals are always in the yy*
+	pseudo namespace.
+	Adjust uses.
+	(b4_parse_param_decl): Remove the leading comma as it is now only
+	called as unique argument list.
+	(Parser::Parser): Remove the constructor accepting a location and
+	an initial debugging level.
+	Remove from the other ctor the argument for the debugging level.
+	(debug_level_type, debug_level, set_debug_level): New.
+
+	* tests/actions.at, tests/calc.at, tests/regression.at: Adjust
+	constructor calls.
+
+2004-12-15  Akim Demaille  <akim@epita.fr>
+
+	Remove b4_root related material: failure experiment
+	(which goal was to allow to derive from a class).
+
+	* data/lalr1.cc (b4_root, b4_param, b4_constructor): Remove
+	definitions and uses.
+
+2004-12-14  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/glr.c (struct yyGLRStack): yyerror_range now has 3 items,
+	not 2, since it's not portable to subtract 1 from the start of an
+	array.  The new item 0 is never set or used.  All uses changed.
+
+	(yyrecoverSyntaxError): Use YYLLOC_DEFAULT instead of assuming
+	the default definition of YYLLOC_DEFAULT.  Problem reported
+	by Frank Heckenbach.
+
+2004-12-12  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/glr.c (YYRHSLOC): Don't have two definitions, one for
+	the normal case and one for the error case.  Just use the
+	first one uniformly.  Problem reported by Frank Heckenbach.
+	(YYLLOC_DEFAULT): Use the conventions of yacc.c, so we can
+	use exactly the same macro in both places.
+	(yyerror_range): Now of type yyGLRStackItem, not YYLTYPE,
+	so that the normal-case YYRHSLOC works for the error case too.
+	All uses changed.
+	* data/yacc.c (YYRHSLOC): New macro, taken from glr.c.
+	(YYLLOC_DEFAULT): Use the same macro as glr.c.
+	* doc/bison.texinfo (Location Default Action): Don't claim that
+	we have an array of locations.  Use the same macro for both glr
+	and lalr parsers.  Mention YYRHSLOC.  Mention what happens when
+	the index is 0.
+
+2004-12-10  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* HACKING: Update email addresses to send announcements to.
+
+	* configure.ac (AC_INIT): Bump version to 1.875f.
+
+2004-12-10  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* NEWS: Version 1.875e.
+	* src/parse-gram.c, src/parse-gram.h: Regenerate with 1.875e.
+
+	* src/scan-skel.l: Include "complain.h", for "fatal".
+
+	* src/relation.h (relation_print, relation_digraph):
+	Relation sizes are of type relation_node, not size_t (this is
+	merely a doc fix, since the two types are equivalent).
+	(relation_transpose): Relation sizes are of type relation_node,
+	not int.
+	* src/relation.c: Likewise.
+	(top, infinity): Now of type relation_node, not int.
+	(traverse, relation_transpose): Use relation_node, not int.
+
+	* data/glr.c (yyuserAction, yyrecoverSyntaxError): Mark args
+	with ATTRIBUTE_UNUSED if they're not used, to avoid GCC warning.
+	(yyparse): Remove unused local introduced in 2004-10-25 patch.
+
+	* tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): New arg
+	specifying whether the test should be skipped.  Use it tp
+	specify that the [%defines %skeleton "lalr1.cc"] tests currently
+	fail on some hosts, and should be skipped.
+
+2004-12-08  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* src/system.h (CALLOC, MALLOC, REALLOC): Remove.  All callers
+	changed to use xcalloc, xnmalloc, xnrealloc, respectively,
+	unless otherwise specified below.
+
+	* src/LR0.c (allocate_itemsets): Use xnmalloc, not xcalloc,
+	to allocate kernel_base, kernel_items, kernel_size, since
+	they needn't be initialized to 0.
+	(allocate_storgae): Likewise, for shiftset, redset, shift_symbol.
+	* src/closure.c (new_closure): Likewise, for itemset.
+	* src/derives.c (derives_compute): Likewise, for delts, derives, q.
+	* src/lalr.c (set_goto_map): Likewise, for temp_map.
+	(initialize_F): Likewise, for reads, edge, reads[i], includes[i].
+	(build_relations): Likewise for edge, states1, includes.
+	* src/nullable.c (nullable_compute): Likewise, for squeue, relts.
+	* src/reader.c (packgram): Likewise, for ritem, rules.
+	* src/reduce.c (nonterminals_reduce): Likewise for nontermmap.
+	* src/relation.c (relation_digraph): Likewise for VERTICES.
+	(relation_transpose): Likewise for new_R, end_R.
+	* src/symtab.c (symbols_token_translations_init): Likewise for
+	token_translations.
+	* src/tables.c (save_row): Likewise for froms, tos, conflict_tos.
+	(token_actions): Likewise for yydefact, actrow, conflrow,
+	conflict_list.
+	(save_column): Likewise for froms[symno], tos[symno].
+	(goto_actions): Likewise for state_count.
+	(pack_table): Likewise for base, pos, check.
+	(tables_generate): Likewise for width.
+
+	* src/LR0.c (set_states): Don't reuse kernel_size and kernel_base
+	for initial core.  Just have a separate core, so we needn't worry
+	about whether kernel_size and kernel_base are initialized.
+
+	* src/LR0.c (shift_symbol, redset, shiftset, kernel_base,
+	kernel_size, kernel_items): Remove unnecessary initialization.
+	* src/conflicts.c (conflicts): Likewise.
+	* src/derives.c (derives): Likewise.
+	* src/muscle_tablc (muscle_insert): Likewise.
+	* src/relation.c (relation_digraph): Likewise.
+	* src/tables.c (froms, tos, conflict_tos, tally, width, actrow, order,
+	conflrow, conflict_table, conflict_list, table, check):
+	Likewise.
+
+	* src/closure.c (new_closure): Arg is of type unsigned int, not int.
+	This is because all callers pass unsigned int.
+	* src/closure.h (new_closure): Likewise.
+
+	* src/lalr.c (initialize_F): Initialize reads[i] in all cases.
+	(build_relations): Initialize includes[i] in all cases.
+	* src/reader.c (packgram): Always initialize rules[ruleno].prec
+	and rules[ruleno].precsym.  Initialize members in order.
+	* src/relation.c (relation_transpose): Always initialize new_R[i]
+	and end_R[i].
+	* src/table.c (conflict_row): Initialize 0 at end of conflict_list.
+
+	* src/output.c (prepare_actions): Pass 0 instead of conflict_list[0];
+	conflict_list[0] was always 0, but now it isn't initialized.
+
+	* src/table.c (table_grow): When conflict_table grew, the grown
+	area wasn't cleared.  Fix this.
+
+	* lib/.cvsignore: Add strdup.c, strdup.h.
+	* m4/.cvsignore: Add strdup.m4.
+
+2004-12-07  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* src/lalr.h (GOTO_NUMBER_MAXIMUM): New macro.
+	* src/lalr.c (set_goto_map): Don't allow ngotos to equal
+	GOTO_NUMBER_MAXIMUM, since we occasionally compute
+	ngotos + 1 without checking for overflow.
+	(build_relations): Use END_NODE, not -1, to denote end of edges.
+	* src/lalr.c (set_goto_map, map_goto, initialize_F, add_loopback_edge,
+	build_relations): Use goto_number, not int, for goto numbers.
+	* src/tables.c (save_column, default_goto): Likewise.
+
+2004-11-23  Akim Demaille  <akim@epita.fr>
+
+	* data/lalr1.cc (YYSTYPE): Define it as is done for C, instead
+	of #defining from yystype.
+	Don't typedef yystype, C++ does not need it.
+	This lets it possible to forward declare it as union.
+
+2004-11-23  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* bootstrap (gnulib_modules): Add extensions.
+	Problem reported by Jim Meyering.
+
+2004-11-22  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* src/LR0.c, src/closure.c, src/derives.c, src/gram.c,
+	src/lalr.c, src/nullable.c, src/relation.c, src/scan-skel.l,
+	src/system.h, src/tables.c: XFREE -> free, to accommodate
+	recent change to gnulib xalloc.h.
+	Problem reported by Jim Meyering.
+
+2004-11-17  Akim Demaille  <akim@epita.fr>
+
+	* data/lalr1.cc (symprint_): Use cdebug_ to avoid warnings.
+
+2004-11-17  Akim Demaille  <akim@epita.fr>,
+	    Alexandre Duret-Lutz <adl@gnu.org>
+
+	* data/lalr1.cc (Parser::yycdebug_): New, a pointer, to allow
+	changes.
+	(YYCDEBUG): Adjust.
+	Use it instead of cdebug_.
+	(Parser::debug_stream, Parser::set_debug_stream): New.
+	(Parser::symprint_): Define cdebug_ for temporary backward
+	compatibility.
+	* tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Use
+	debug_stream ().
+
+2004-11-17  Akim Demaille  <akim@epita.fr>
+
+	* data/lalr1.cc (Parser:print_): Remove, use %printer instead.
+	* tests/regression.at (_AT_DATA_DANCER_Y): Adjust.
+	* tests/calc.at (_AT_DATA_CALC_Y): Ditto.
+	* tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Likewise.
+
+2004-10-27  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/glr.c (yyloc_default): Remove; not used.
+	Problem reported by Frank Heckenbach.
+
+2004-10-25  Akim Demaille  <akim@epita.fr>
+
+	* data/glr.c (YYRHSLOC): Move its definition next to its uses.
+	Introduce another definition to address simple location arrays.
+	(yyGLRStack): New member: yyerror_range.
+	(yyrecoverSyntaxError, yyparse): Update it.
+	(yyrecoverSyntaxError): Use it when shifting the error token to
+	have an accurate range, equivalent to the one computed by both
+	yacc.c and lalr1.cc.
+	* tests/cxx-type.at (_AT_TEST_GLR_CXXTYPES): Change its yylex so
+	that column numbers start at column 0, as per GNU Coding
+	Standards, the others tests, and the doc.
+	(_AT_RESOLVED_GLR_OUTPUT_WITH_LOC, _AT_AMBIG_GLR_OUTPUT_WITH_LOC):
+	Adjust to the above change (first column is 0).
+	And adjust the location of the "<error>", now covering the whole
+	line.
+
+2004-10-22  Akim Demaille  <akim@epita.fr>
+	and Paul Eggert  <eggert@cs.ucla.edu>
+
+	Remove some arbitrary limits on goto numbers and relations.
+	* src/lalr.c (goto_map, ngotos, from_state, to_state): Omit
+	initial values, since they're never used.
+	(set_goto_map): ngotos is now unsigned, so test for overflow
+	by seeing whether it wraps around to zero.
+	* src/lalr.h (goto_number): Now size_t, not short int.
+	(GOTO_NUMBER_MAXIMUM): Remove.
+	* src/relation.c (relation_print, traverse, relation_transpose):
+	Check for END_NODE rather than looking at sign.
+	* src/relation.h (END_NODE): New macro.
+	(relation_node): Now size_t, not short int.
+
+2004-10-22  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* doc/bison.texinfo (Language and Grammar): In example, "int" is a
+	keyword, not an identifier.  Problem reported by Baron Schwartz in
+	<http://lists.gnu.org/archive/html/bug-bison/2004-10/msg00017.html>.
+
+2004-10-11  Akim Demaille  <akim@epita.fr>
+
+	* src/symtab.c (symbol_check_alias_consistency): Also check
+	type names, destructors, and printers.
+	Reported by Alexandre Duret-Lutz.
+	Recode the handling of associativity and precedence in terms
+	of symbol_precedence_set.
+	Accept no redeclaration at all, not even equal to the previous
+	value.
+	(redeclaration): New.
+	Use it to factor redeclaration complaints.
+	(symbol_make_alias): Don't set the type of the alias, let
+	symbol_check_alias_consistency do it as for other features.
+	* src/symtab.h (symbol): Add new member prec_location, and
+	type_location.
+	* src/symtab.c (symbol_precedence_set, symbol_type_set): Set them.
+	* tests/input.at (Incompatible Aliases): New.
+
+2004-10-09  Paul Eggert  <eggert@cs.ucla.edu>
+
+	.cvsignore fixes to accommodate gnulib changes,
+	and the practice of naming build directories "_build".
+	* .cvsignore: Add "_*".  Sort.
+	* lib/.cvsignore: Add getopt_.h, xalloc-die.c.
+	* m4/.cvsignore: Add "*_gl.m4".
+
+2004-10-06  Akim Demaille  <akim@epita.fr>
+
+	* src/parse-gram.y (add_param): Fix the truncation of trailing
+	spaces.
+
+2004-10-05  Akim Demaille  <akim@epita.fr>
+
+	In Bison 1.875's yacc.c, YYLLOC_DEFAULT was called regardless
+	whether the reducion was empty or not.  This leaves room to
+	improve the use of YYLLOC_DEFAULT in such a case.
+	lalr1.cc is still experimental, so changing this is acceptable.
+	And finally, there are probably not many users who changed the
+	handling of locations in GLR, so changing is admissible too.
+
+	* data/glr.c, data/lalr1.cc, data/yacc.c (YYLLOC_DEFAULT): On an
+	empty reduction, set @$ to an empty location ending the previously
+	stacked symbol.
+	Adjust uses to make sure the code is triggered on empty
+	reductions.
+	* tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Adjust the
+	expected output: empty reductions have empty locations.
+
+2004-09-29  Akim Demaille  <akim@epita.fr>
+
+	* data/lalr1.cc: Move towards a more standard C++ coding style
+	for templates: Class < T > -> Class<T>.
+
+2004-09-29  Akim Demaille  <akim@epita.fr>
+
+	* data/lalr1.cc: Reinstall the former ctor, for sake of
+	compatibility, but warn it will be removed.
+	Move towards a more standard C++ coding style (i.e., type *var ->
+	type* var).
+
+2004-09-27  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* src/parse-gram.y (add_param): Rewrite to avoid strchr,
+	since it's less likely to work if NULs are involved in the future.
+
+2004-09-27  Akim Demaille  <akim@epita.fr>
+
+	* data/yacc.c (YY_LOCATION_PRINT): Fix its default declaration.
+
+2004-09-27  Akim Demaille  <akim@epita.fr>
+
+	* data/lalr1.cc (b4_parse_param_decl_1): New.
+	(b4_parse_param_decl): Use it to have different names between attribute
+	and argument names.
+	(b4_cc_constructor_call): Likewise.
+
+2004-09-24  Akim Demaille  <akim@epita.fr>
+
+	* src/parse-gram.y (add_param): Strip the leading and trailing
+	blanks from a formal argument declaration.
+	(YY_LOCATION_PRINT): New.
+
+2004-09-24  Akim Demaille  <akim@epita.fr>
+
+	* data/c.m4 (b4_yysymprint_generate): Move the YYINPUT invocation
+	after the location.
+
+2004-09-24  Akim Demaille  <akim@epita.fr>
+
+	* doc/bison.texinfo (Table of Symbols): Sort.
+
+2004-09-21  Akim Demaille  <akim@epita.fr>
+
+	* data/yacc.c, data/glr.c (b4_at_dollar, b4_dollar_dollar): Remove
+	the useless parentheses.
+	Suggested by Paul Eggert.
+
+2004-09-20  Akim Demaille  <akim@epita.fr>
+
+	Let the initial-action act on the look-ahead, and use it for the
+	"initial push" (corresponding to an hypothetical beginning-of-file).
+	And let lalr1.cc honor %initial-action.
+
+	* doc/bison.texinfo (Initial Action Decl): Clarify, and add an
+	example.
+	* data/lalr1.cc (Parser::initlocation_): Remove, bad experiment.
+	(Parser::Parser): Remove the ctor that used to initialize it.
+	(Parser::parse): Like in the other skeletons, issue the "starting
+	parse" message before any action.
+	Honor %initial-action.
+	Initialize the stacks with the lookahead.
+	* data/yacc.c: Let $$ and @$ in %initial-action designate the
+	look-ahead.
+	Push them in the stacks.
+	* tests/actions.at, tests/calc.at: Adjust the C++ ctor invocations.
+
+2004-09-20  Akim Demaille  <akim@epita.fr>
+
+	* doc/bison.texinfo (Initial Action Decl): New.
+
+2004-09-20  Akim Demaille  <akim@epita.fr>
+
+	* data/yacc.c (YY_LOCATION_PRINT): Use YYLTYPE_IS_TRIVIAL as a
+	clearer criterion to define it.
+	(parse): Initialize the initial location when YYLTYPE_IS_TRIVIAL.
+	When reducing on an empty RHS, use the latest stacked location as
+	location.
+	yylloc is not always available.
+	* data/glr.c: Likewise.
+	Also, honor initial-actions.
+
+2004-09-20  Akim Demaille  <akim@epita.fr>
+
+	* data/yacc.c (YY_LOCATION_PRINT): New.
+	Define when we know YYLTYPE's structure, i.e., when the default
+	YYLLOC_DEFAULT is used.
+	* data/c.m4 (b4_yysymprint_generate): Use it.
+	* data/lalr1.cc (YYLLOC_DEFAULT): Stop relying on the initial
+	value of the result.
+	(error_start_): Replace with...
+	(error_range_): this location array.
+	This allows to replace code relying on the implementation of
+	locations by portable code.
+	* data/yacc.c (yylerrsp): Replace with...
+	(yyerror_range): this.
+	Every time a token is popped, update yyerror_range[0], to have an
+	accurate location for the error token.
+	* data/glr.c (YY_LOCATION_PRINT): New.
+	(yyprocessOneStack): Fix an invocation of YY_SYMBOL_PRINT:
+	deference a pointer.
+	* tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): No longer
+	report the location in %printers.
+
+	* src/scan-skel.l: Instead of abort, report error messages to ease
+	understanding skeleton scanning failures.
+
+2004-09-16  Akim Demaille  <akim@epita.fr>
+
+	* data/lalr1.cc (Stack::Iterator, Stack::ConstIterator): Rename as...
+	(iterator, const_iterator): these, to be more in the C++ spirit.
+	Also, return reverse iterators so that when displaying the stack
+	we display its bottom first.
+	(Parser::stack_print_, Parser::reduce_print_): Match the messages
+	from yacc.c.
+	We should probably use vector here though.
+
+2004-09-16  Akim Demaille  <akim@epita.fr>
+
+	Have more complete shift traces.
+
+	* data/yacc.c, data/lalr1.c, data/glr.c: Use YY_SYMBOL_PRINT
+	to report Shifts instead of ad hoc YYDPRINTF invocations,
+	including for the error token.
+	* data/lalr1.cc (symprint_): Output the location.
+	* tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): In C++, don't
+	output the location within the %printer.
+	Activate GLR tests, at least to make sure they compile properly.
+	They still don't pass though.
+	* tests/calc.at: Adjust expect verbose output, since now "Entering
+	state..." is on a different line than the "Shifting" message.
+
+2004-09-08  Akim Demaille  <akim@epita.fr>
+
+	* tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Move the
+	Bison directive from the Bison file to the invocation of this
+	macro, so that these directives are passed to
+	AT_BISON_OPTION_PUSHDEFS to get correct help macros.
+	Use these helping macros (e.g., AT_LOC, AT_VAL and so forth).
+	Move the AT_SETUP/AT_CLEANUP outside, to report as test title
+	the extra Bison directives instead of the whole series.
+	Change the grammar so that there are recoverable errors, and
+	unrecoverable errors.  Now we can have the parser give up before
+	consuming the whole input.  As a result we now can observe that
+	the lookahead is freed when needed.
+	Change the parser source to parse argv[1] instead of a hard coded
+	string.
+	Simplify yylex, and give a value and location to EOF.
+	Simplify some invocations of AT_CHECK_PRINTER_AND_DESTRUCTOR that
+	passed directives already coded in the file.
+	Add some tests to check the location of "error".
+	For some tests, the C++ parser is correct, and not yacc.c.
+	For other tests, they provide different, but unsatisfying, values,
+	so keep the C++ value so that at least one parser is "correct"
+	according to the test suite.
+	(Actions after errors): Remove, this is subsumed by the
+	AT_CHECK_PRINTER_AND_DESTRUCTOR series.
+
+2004-09-06  Akim Demaille  <akim@epita.fr>
+
+	* data/lalr1.cc: Adjust the indentation of the labels.
+	(Parser::pop): New.
+	Use it.
+
+2004-09-06  Akim Demaille  <akim@epita.fr>
+
+	* data/yacc.cc, data/glr.cc (yydestruct): Accept an additional
+	argument, an informative message.
+	Call YY_SYMBOL_PRINT.
+	Adjust all callers: integrate the associated YY_SYMBOL_PRINT.
+	* data/lalr1.cc (destruct_): Likewise.
+	In addition, no longer depend on b4_yysymprint_generate and
+	b4_yydestruct_generate to generate these functions, do it "by
+	hand".
+
+2004-09-03  Akim Demaille  <akim@epita.fr>
+
+	* data/glr.c, data/lalr1.cc, data/yacc.c: When YYABORT was
+	invoked, yydestruct the lookahead.
+	* tests/calc.at (Calculator $1): Update the expected lengths of
+	traces: there is an added line for the discarded lookahead.
+	* doc/bison.texinfo (Destructor Decl): Some rewording.
+	Define "discarded" symbols.
+
+2004-09-02  Akim Demaille  <akim@epita.fr>
+
+	* data/lalr1.cc (translate_, destruct_): No reason to be static.
+
+2004-09-02  Akim Demaille  <akim@epita.fr>
+
+	* data/glr.c, yacc.c (YYDSYMPRINT): Remove, not used.
+	(YYDSYMPRINTF): Rename as...
+	(YY_SYMBOL_PRINT): this.
+	* data/lalr1.cc (YY_SYMBOL_PRINT): New, modeled after the previous
+	two.
+	Use it instead of direct symprint_ calls.
+	(yybackup): Tweak the "Now at end of input" case to match yacc.c's
+	one.
+
+2004-09-02  Akim Demaille  <akim@epita.fr>
+
+	* data/lalr1.cc (b4_yysymprint_generate): New.
+	(symprint_): New member function, defined when YYDEBUG.
+	Use it consistently instead of token/nterm debugging output by
+	hand.
+	* tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Adjust
+	%printer calls to use cdebug_ when using lalr1.cc.
+
+2004-08-30  Florian Krohm  <florian@edamail.fishkill.ibm.com>
+
+	* data/glr.c: Guard the declarations of yypstack and yypdumpstack
+	with #ifdef YYDEBUG.
+
+2004-08-26  Akim Demaille  <akim@epita.fr>
+
+	* doc/bison.texinfo (Implementing Loops): Rename as...
+	(Implementing Gotos/Loops): this.
+
+2004-08-13  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Adjust to latest gnulib.
+	* bootstrap (gnulib_modules): Add xalloc-die.
+	Set LC_ALL=C so that file names sort consistently.
+	Prefer the gnulib copies of gettext.m4, glibc21.m4,
+	inttypes_h.m4, lib-ld.m4, lib-prefix.m4, po.m4, stdint_h.m4,
+	uintmax_t.m4, ulonglong.m4.
+	(intl_files_to_remove): Add gettext.m4, lib-ld.m4, lib-prefix.m4,
+	po.m4 since we are now using _gl.m4 instead.
+
+2004-08-10  Florian Krohm  <florian@edamail.fishkill.ibm.com>
+
+	* src/scan-action.l: Remove. Scanning of semantic actions is
+	handled in scan-gram.l.
+
+2004-08-07  Florian Krohm  <florian@edamail.fishkill.ibm.com>
+
+	* src/scan-gram.l (handle_syncline): Use uniqstr_new not xstrdup.
+
+	* src/location.h (struct): The file member is a uniqstr.
+	(equal_boundaries): Use UNIQSTR_EQ for comparison.
+
+2004-07-22  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Fix bug with non-%union parsers that have printers or destructors,
+	which led to a Bison core dump.  Reported by Peter Fales in
+	<http://lists.gnu.org/archive/html/bug-bison/2004-07/msg00014.html>.
+
+	* data/c.m4 (b4_symbol_actions): Don't assume %union was used.
+	* data/lalr1.cc (yystype) [defined YYSTYPE]: Define to YYSTYPE,
+	not to our own type.
+	* src/output.c (symbol_destructors_output, symbol_printers_output):
+	Don't assume %union.
+	* tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR,
+	AT_CHECK_PRINTER_AND_DESTRUCTOR): New argument
+	UNION-FLAG.  All callers changed.
+	(_AT_CHECK_PRINTER_AND_DESTRUCTOR): Don't assume %union.
+	Use type char, not unsigned int, when declaring an array of char;
+	this lets us remove a cast.
+	(Printers and Destructors): Add non-%union test cases.
+
+2004-06-21  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* doc/bison.texinfo: Minor editorial changes, mostly to the new
+	GLR writeups.  E.g., avoid frenchspacing and the future tense,
+	change "lookahead" to "look-ahead", and change "wrt" to "with
+	respect to".
+
+2004-06-21  Paul Hilfinger  <hilfingr@CS.Berkeley.EDU>
+
+	* doc/bison.texinfo (Merging GLR Parses, Compiler Requirements):
+	New sections, split off from the GLR Parsers section.  Put the new
+	Simple GLR Parser near the start of the GLR section, for clarity.
+	Rewrite connective text.
+
+2004-06-21  Frank Heckenbach  <frank@g-n-u.de>
+
+	* doc/bison.texinfo (Simple GLR Parsers): New section.
+
+2004-06-21  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* NEWS, TODO, doc/bison.texinfo:
+	Use "look-ahead" instead of "lookahead", to be consistent.
+	* REFERENCES: Fix incorrect reference to DeRemer and Pennello,
+	while we're fixing "look-ahead".
+	* src/conflicts.c (shift_set): Renamed from shiftset.
+	(look_ahead_set): Renamed from lookaheadset.
+	* src/print.c: Likewise.
+	* src/getargs.c (report_args): Add "look-ahead" as the new canonical
+	name for "lookahead".
+	(report_types, usage): Likewise.
+	* src/getargs.h (report_look_ahead_tokens): Renamed from
+	report_lookaheads.
+	* src/lalr.c (compute_look_ahead_tokens): Renamed from
+	compute_lookaheads.
+	(state_look_ahead_tokens_count): Renamed from state_lookaheads_count.
+	(look_ahead_tokens_print): Renamed from lookaheads_print.
+	* src/state.c (state_rule_look_ahead_tokens_print): Renamed from
+	state_rule_lookaheads_print.
+	* src/state.h: Likewise.
+	(reductions.look_ahead_tokens): Renamed from lookaheads.
+	* tests/torture.at (AT_DATA_LOOK_AHEAD_TOKENS_GRAMMAR): Renamed from
+	AT_DATA_LOOKAHEADS_GRAMMAR.
+
+2004-06-03  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* README: Update location of patched M4 distribution.
+
+2004-05-30  Albert Chin-A-Young  <china@thewrittenword.com>
+
+	Don't assume the C++ compiler takes the same arguments as the C compiler
+	(trivial change).
+	* configure.ac (O0CXXFLAGS): New var.
+	* tests/atlocal.in (CXXFLAGS): Use it.
+
+2004-05-29  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Fix some "make check" problems with C++ reported by
+	Albert Chin-A-Young for Tru64 C++ in this thread:
+	http://lists.gnu.org/archive/html/bug-bison/2004-05/msg00049.html
+
+	* m4/cxx.m4 (BISON_TEST_FOR_WORKING_CXX_COMPILER): Check for std::cerr.
+	* tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR):
+	Output to a .cc file for C++, not to a .c file.
+	* tests/calc.at (AT_CHECK_CALC): Likewise.
+	* tests/regression.at (AT_CHECK_DANCER): Likewise.
+	* tests/local.at (AT_COMPILE_CXX): Default to OUTPUT.cc, not OUTPUT.c.
+
+2004-05-28  Albert Chin-A-Young  <china@thewrittenword.com>
+
+	* tests/calc.at, tests/actions.at: Workaround for SGI
+	C++ compiler.  (trivial change)
+
+2004-05-27  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Spent a few hours checking out which prerequisite versions the
+	current sources actually require.  I went all the way back to
+	Gettext 0.10.40, Automake 1.4, and Autoconf 2.57 and investigated
+	a seemingly endless set of combinations of versions more recent
+	than that.  The bottom line is that the current sources require
+	fairly recent versions of the build tools, and it'll be some work
+	to change this.
+	* configure.ac (AC_PREREQ): Increase from 2.58 to 2.59.
+	(AM_INIT_AUTOMAKE): Increase from 1.7 to 1.8.
+	(AM_GNU_GETTEXT_VERSION): Increase from 0.11.5 to 0.12.
+	Add comments explaining why those particular versions are
+	currently needed.
+
+	* src/parse-gram.y (lloc_default): Rewrite to avoid compiler bug
+	in SGI MIPSpro 7.4.1m.  Problem reported by Albert Chin-A-Young in
+	<http://lists.gnu.org/archive/html/bug-bison/2004-05/msg00037.html>.
+
+	* configure.ac (AC_PREREQ): Bump to 2.58, since 2.57 doesn't work
+	(it fails with a Autoconf-without-aclocal-m4 diagnostic).
+
+2004-05-26  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* configure.ac (AM_GNU_GETTEXT_VERSION): Lower it from 0.14.1 to
+	0.11.5.  Suggested by Bruno Haible.
+	* bootstrap: Remove gettext version checking.
+
+	* doc/bison.texinfo (Decl Summary): Also mention that %union
+	can depend on prerequisite types.  Problem reported by Tim
+	Van Holder.
+
+2004-05-25  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* README: Mention GNU m4 1.4 bugs and Akim's patched version.
+	* README-alpha: Don't tell people not to package this.
+
+	* bootstrap: Don't assume $(...) works; use `...` instead.
+	Problem reported by Paul Hilfinger.  Also, diagnose non-GNU
+	gettext better.
+
+	* doc/bison.texinfo (Decl Summary, Bison Options): Clarify what's
+	put into the -d output file, and mention what to do if YYSTYPE is
+	defined as a macro.
+
+2004-05-24  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Undo change made earlier today: it caused autopoint to not bring
+	in ABOUT-NLS.  Ouch.  Instead, substitute our own diagnostic for
+	autopoint's.
+
+	* bootstrap: Check that gettext version matches what's in
+	configure.ac.  Warn users to ignore robots.txt ERROR 404.
+	* bootstrap: Undo today's earlier change (logged below).
+	* configure.ac (AM_GNU_GETTEXT_VERSION): Likewise.
+
+	The gettext version checking is causing more trouble than it's
+	curing; remove it.  Problem reported by Paul Hilfinger.
+
+	* bootstrap: Issue a warning that one can expect a message
+	'AM_GNU_GETTEXT is used, but not AM_GNU_GETTEXT_VERSION'.
+	* configure.ac (AM_GNU_GETTEXT_VERSION): Remove.
+
+2004-05-23  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Ensure that the C++ compiler used for testing actually works on a
+	simple test program; if not, skip the C++-related tests.  Problem
+	reported by Vin Shelton in:
+	http://lists.gnu.org/archive/html/bug-bison/2004-05/msg00026.html
+
+	* m4/cxx.m4: New file.
+	* configure.ac (BISON_TEST_FOR_WORKING_CXX_COMPILER): Add.
+	* tests/atlocal.in (BISON_CXX_WORKS): Add.
+	* tests/local.at (AT_COMPILE_CXX): Use it.
+
+2004-05-21  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* data/glr.c (yylloc): Output this macro even if locations are not
+	being generated, as the GLR parser needs it even in that case.
+	Problem reported by Troy A. Johnson
+	<http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=195946>.
+
+	* configure.ac (AC_INIT): Update to 1.875e.
+
+2004-05-21  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* NEWS: Version 1.875d.
+	* configure.ac (AC_INIT): Likewise.
+	* src/parse-gram.c, src/parse-gram.h: Regenerate with 1.875d.
+
+	* configure.ac (--enable-gcc-warnings): Do not enable -Wshadow,
+	-Wmissing-prototypes, or -Wstrict-prototypes for C++.  The current
+	lalr1.cc runs afoul of the first, and the last two are no longer
+	supported by GCC 3.4.0.
+	* README: Mention GNU m4 1.4 or later; mention m4 patches.
+	* HACKING: Use ./bootstrap, not "make update" to import foreign files.
+
+2004-05-06  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* src/muscle_tab.c (hash_muscle): Accept and return size_t, not
+	unsigned int, for compatibility with latest gnulib hash module.
+	* src/state.c (state_hash, state_hasher): Likewise.
+	* src/symtab.c (hash_symbol, hash_symbol_hasher): Likewise.
+	* src/uniqstr.c (hash_uniqstr): Likewise.
+
+2004-05-03  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* NEWS: Unescaped newlines are no longer allowed in char & strings.
+
+	* src/scan-gram.l (<SC_ESCAPED_STRING,SC_ESCAPED_CHARACTER,
+	SC_CHARACTER,SC_STRING>): Reject unescaped newlines in
+	character and string literals.
+	(unexpected_end): New function.
+	(unexpected_eof): Use it.
+	(unexpected_newline): New function.
+	(<INITIAL,SC_AFTER_IDENTIFIER,SC_PRE_CODE>): Coalesce duplicate
+	actions.
+
+	* NEWS: Document %expect-rr.
+
+	* bootstrap (--gnulib-srcdir=*, --cvs-user=*):
+	Fix typo by replacing $1 with $option.
+	Remove more 'intl'-related files.
+	Don't DEFUN AM_INTL_SUBDIR twice.
+
+	* lib/.cvsignore: Add strndup.h.  Remove memchr.c, memcmp.c,
+	memrchr.c, strcasecmp.c, strchr.c, strrchr.c, strspn.c, strtol.c,
+	strtoul.c.
+	* m4/.cvsignore: Add exitfail.m4, extensions.m4, gnulib.m4,
+	hard-locale.m4, mbstate_t.m4, strerror_r.m4, strndup.m4,
+	xstrndup.m4.  Remove glibc21.m4, intdiv0.m4, inttypes-pri.m4,
+	inttypes.m4, inttypes_h.m4, isc-posix.m4, lcmessage.m4,
+	stdint_h.m4, uintmax_t.m4, ulonglong.m4.
+	* src/.cvsignore: Add *.output.
+
+	* src/parse-gram.y: Put copyright notice inside %{ %} so it
+	gets copied to the output file.
+
+2004-04-28  Paul Eggert  <eggert@twinsun.com>
+
+	Get files from the gnulib and po repositories, instead of relying
+	on them being in our CVS.  Upgrade to latest versions of gnulib
+	and Automake.
+
+	* Makefile.am (SUBDIRS): Remove m4; Automake now does m4.
+	* bootstrap: Bootstrap from gnulib and po repositories.
+	Much of this code was stolen from GNU diff and GNU tar's bootstrap.
+	* README-cvs: Document these changes.  Remove version numbers from
+	mentions of build tools, since they change so often.  Mention Flex.
+
+	* configure.ac (AC_CONFIG_MACRO_DIR): Add, with m4 as arg.
+	(gl_USE_SYSTEM_EXTENSIONS): Add.
+	(AC_GNU_SOURCE, AC_AIX, AC_MINIX):
+	Remove; no longer needed, as gl_USE_SYSTEM_EXTENSIONS
+	does this for us.
+	(AC_ISC_POSIX): Remove; we no longer support this
+	ancient OS, as it gets in the way of latest Autoconf & gnulib.
+	(AC_HEADER_STDC): Remove: we now assume C89 or better.
+	(AC_CHECK_HEADERS_ONCE): Use instead of AC_CHECK_HEADERS.
+	Do not check for C89 headers, except for locale.h which is used
+	by the Yacc library and must port to K&R hosts.
+	(AC_CHECK_FUNCS_ONCE): Use instead of AC_CHECK_FUNCS.
+	Do not check for C89 functions, except for setlocale which is
+	used by the Yacc library.
+	(AC_CHECK_DECLS, AC_REPLACE_FUNCS): Remove; no longer needed.
+	(gl_DIRNAME, gl_ERROR, gl_FUNC_ALLOCA, gl_FUNC_MEMCHR,
+	gl_FUNC_MEMRCHR, gl_FUNC_STPCPY, gl_FUNC_STRNLEN, gl_FUNC_STRTOL,
+	gl_GETOPT, gl_HASH, gl_MBSWIDTH, gl_OBSTACK, gl_QUOTE,
+	gl_QUOTEARG, gl_XALLOC, jm_FUNC_GLIBC_UNLOCKED_IO, jm_FUNC_MALLOC,
+	AM_GNU_GETTEXT): Remove; now done by:
+	(GNULIB_AUTOCONF_SNIPPET): Add.  "bootstrap" builds this for us.
+	(AC_CONFIG_FILES): Remove m4/Makefile, as Automake now does this
+	for us.
+
+	* lib/Makefile.am: Include gnulib.mk, built for us by "bootstrap".
+	(BUILT_SOURCES, EXTRA_DIST, MOSTLYCLEANFILES):
+	Define to empty, as gnulib.mk will do the rest for us.
+	($(libbison_a_OBJECTS), stdbool.h): Remove, as gnulib.mk does this
+	for us.
+	(libbison_a_SOURCES): Define to $(lib_SOURCES) now.
+	(lib_SOURCES): New symbol, containing only the non-gnulib libs.
+
+	* src/files.c: Include gnulib's xstrndup.h.
+
+	* src/system.h (MALLOC): Use xnmalloc, for better overflow checking.
+	(REALLOC): Use xnrealloc, for likewise.
+	(xstrndup, stpcpy): Remove decls, as gnulib does this for us now.
+	(strnlen, memrchr): Remove decls; functions no longer used.
+	Include <stpcpy.h>.
+
+	* config/depcomp, config/install-sh, lib/alloca.c, lib/argmatch.c,
+	lib/argmatch.h, lib/basename.c, lib/dirname.c, lib/dirname.h,
+	lib/error.c, lib/error.h, lib/getopt.c, lib/getopt.h,
+	lib/getopt1.c, lib/gettext.h, lib/hash.c, lib/hash.h,
+	lib/malloc.c, lib/mbswidth.c, lib/mbswidth.h, lib/memchr.c,
+	lib/memcmp.c, lib/memrchr.c, lib/obstack.c, lib/obstack.h,
+	lib/quote.c, lib/quote.h, lib/quotearg.c, lib/quotearg.h,
+	lib/realloc.c, lib/stdbool_.h, lib/stpcpy.c, lib/strcasecmp.c,
+	lib/strchr.c, lib/strncasecmp.c, lib/strnlen.c, lib/strrchr.c,
+	lib/strspn.c, lib/strtol.c, lib/strtoul.c, lib/unlocked-io.h,
+	lib/xalloc.h, lib/xmalloc.c, lib/xstrdup.c, lib/xstrndup.c,
+	m4/Makefile.am, m4/alloca.m4, m4/dirname.m4, m4/dos.m4,
+	m4/error.m4, m4/getopt.m4, m4/hash.m4, m4/malloc.m4,
+	m4/mbrtowc.m4, m4/mbswidth.m4, m4/memchr.m4, m4/memcmp.m4,
+	m4/memrchr.m4, m4/obstack.m4, m4/onceonly.m4, m4/prereq.m4,
+	m4/quote.m4, m4/quotearg.m4, m4/realloc.m4, m4/stdbool.m4,
+	m4/stpcpy.m4, m4/strnlen.m4, m4/strtol.m4, m4/strtoul.m4,
+	m4/unlocked-io.m4, m4/xalloc.m4, po/LINGUAS, po/Makefile.in.in,
+	po/Makevars, po/da.po, po/de.po, po/es.po, po/et.po, po/fr.po,
+	po/hr.po, po/id.po, po/it.po, po/ja.po, po/ms.po, po/nl.po,
+	po/pt_BR.po, po/ro.po, po/ru.po, po/sv.po, po/tr.po:
+	Remove, as these files are now generated automatically
+	by bootstrap or automake.
+
+	* po/ChangeLog: Remove: all but one entry was a duplicate
+	of this file, and I moved that 2000-11-02 entry here.
+
+	* config/.cvsignore: Add Makefile, depcomp, install-sh.
+	* lib/.cvsignore: Add alloca.c, alloca.h, alloca_.h, argmatch.c,
+	argmatch.h, basename.c, dirname.c, dirname.h, error.c, error.h,
+	exit.h, exitfail.c, exitfail.h, getopt.c, getopt.h, getopt1.c,
+	getopt_int.h, gettext.h, gnulib.mk, hard-locale.c, hard-locale.h,
+	hash.c, hash.h, malloc.c, mbswidth.c, mbswidth.h, memchr.c,
+	memcmp.c, memrchr.c, obstack.c, obstack.h, quote.c, quote.h,
+	quotearg.c, quotearg.h, realloc.c, stdbool_.h, stpcpy.c, stpcpy.h,
+	strcasecmp.c, strchr.c, stripslash.c, strncasecmp.c, strndup.c,
+	strnlen.c, strrchr.c, strspn.c, strtol.c, strtoul.c,
+	unlocked-io.h, xalloc.h, xmalloc.c, xstrdup.c, xstrndup.c,
+	xstrndup.h.
+	* m4/.cvsignore: Remove Makefile, Makefile.in.  Add alloca.m4,
+	dirname.m4, dos.m4, error.m4, getopt.m4, hash.m4, mbrtowc.m4,
+	mbswidth.m4, obstack.m4, onceonly.m4, quote.m4, quotearg.m4,
+	stdbool.m4, stpcpy.m4, strnlen.m4, unlocked-io.m4, xalloc.m4.
+	* po/.cvsignore: Add *.po, LINGUAS, Makefile.in.in, Makevars.
+	* src/.cvsignore: Remove *_.c.
+
+
+	* Makefile.maint (GZIP_ENV): Don't use --rsyncable if gzip doesn't
+	support it.  (The latest stable gzip doesn't.)
+
+2004-04-27  Paul Eggert  <eggert@twinsun.com>
+
+	* data/lalr1.cc (Parser::stos_) [! YYDEBUG]: Define even in this
+	case, as stos_ is now used by destructors due to the 2004-02-09
+	change.
+
+	Remove more K&R C support.
+	* lib/libiberty.y (PARAMS): Remove.  All uses removed.
+	* lib/subpipe.c (errno): Remove decl.
+	Include <stdlib.h> unconditionally.
+	(EXIT_FAILURE): Remove macro.
+	* src/complain.c (vfprintf, strerror): Remove.
+	* src/system.h: Include limits.h, stdlib.h, string.h, locale.h
+	unconditionally.
+	(EXIT_FAILURE, EXIT_SUCCESS, setlocale): Remove defns.
+	Use latest Autoconf recommendations for including inttypes.h, stdint.h.
+	(strchr, strspn, memchr): Remove decls.
+	* tests/calc.at (_AT_DATA_CALC_Y): Include stdlib.h, string.h
+	unconditionally.  Do not declare perror.
+	* tests/conflicts.at (%nonassoc and eof): Include stdlib.h
+	unconditionally.
+
+	* src/complain.c (_): Remove useless defn, as system.h defines this.
+
+	* lib/bitset.h (__INT_TO_PTR): Remove; workaround no longer needed
+	with latest obstack.h.
+	* lib/ebitset.c (ebitset_elt_alloc): Don't bother to cast args
+	to procedure types, as obstack.h now does that for us.
+	* lib/lbitset.c (lbitset_elt_alloc): Likewise.
+
+	* lib/subpipe.h [HAVE_SYS_TYPES_H]: Include <sys/types.h>,
+	so that this include file can stand alone.
+	* lib/subpipe.c: Do not include <sys/types.h>, as subpipe.h
+	does this now.  Include subpipe.h first after config.h, to
+	test whether it can stand alone.
+
+	* tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Don't
+	declare yyerror when using lalr.cc, as GCC 3.4.0 warns about the
+	unused declaration.
+
+	* tests/synclines.at (%union synch line): Put a dummy member in
+	the union, because empty unions aren't allowed in C.  Caught
+	by GCC 3.4.0.
+
+2004-04-13  Jim Meyering  <jim@meyering.net>
+
+	* src/conflicts.c (conflicts_print): Correct format string typo:
+	use `%%' to produce literal `%'.  (trivial change)
+
+2004-03-30  Paul Eggert  <eggert@twinsun.com>
+
+	* src/getargs.c (version): Update copyright year to 2004.
+
+	* data/c.m4 (b4_int_type): Use 'short int' rather than
+	'short', and similarly for 'long', 'unsigned', etc.
+	* data/glr.c (YYTRANSLATE, yyconfl, yySymbol, yyItemNum,
+	yygetLRActions, yyprocessOneStack, yyrecoverSyntaxError,
+	yy_yypstack, yydumpstack): Likewise.
+	* data/lalr1.cc (user_token_number_max_, user_token_number_max_,
+	translate_, seq_, [], pop, Slice, range_, operator+, operator+=):
+	Likewise.
+	* data/yacc.c (b4_int_type, yyss, YYSTACK_BYTES, yysigned_char,
+	yy_stack_print, yyparse): Likewise.
+	* doc/bison.texinfo (Prologue, Multiple Types): Likewise.
+	* lib/bbitset.h (bitset_word, BITSET_WORD_BITS): Likewise.
+	* lib/bitset.c (bitset_print): Likewise.
+	* lib/bitset_stats.c (bitste_log_histogram_print): Likewise.
+	* lib/bitsetv-print.c (bitsetv_matrix_dump): Likewise.
+	* lib/bitsetv.c (bitsetv_dump): Likewise.
+	* lib/ebitset.c (EBITSET_ELT_BITS, ebitset_elt_alloc): Likewise.
+	* lib/lbitset.c (LBITSET_ELT_BITS, lbitset_elt_alloc, debug_lbitset):
+	Likewise.
+	* src/LR0.c (allocate_itemsets): Likewise.
+	* src/gram.h (rule_number, rule): Likewise.
+	* src/lalr.h (goto_number): Likewise.
+	* src/nullable.c (nullable_compute): Likewise.
+	* src/output.c (prepare_rules): Likewise.
+	* src/relation.c (relation_print, relation_digraph): Likewise.
+	* src/relation.h (relation_node): Likewise.
+	* src/state.h (state_number, transitions, errs, reductions,
+	struct state): Likewise.
+	* src/symtab.h (symbol_number, struct symbol): Likewise.
+	* src/tables.c (vector_number, tally, action_number,
+	default_goto, goto_actions): Likewise.
+	* tests/existing.at (GNU Cim Grammar): Likewise.
+	* tests/regression.at (Web2c Actions): Likewise.
+
+	* src/output.c (muscle_insert_short_int_table): Renamed from
+	muscle_insert_short_table.  All uses changed.
+
+2004-03-25  Paul Hilfinger  <hilfingr@tully.CS.Berkeley.EDU>
+
+	* src/parse-gram.y: Define PERCENT_EXPECT_RR.
+	(declaration): Replace expected_conflicts with expected_sr_conflicts.
+	Add %expect-rr rule.
+
+	* src/scan-gram.l: Recognize %expect-rr.
+
+	* src/conflicts.h (expected_sr_conflicts): Rename from
+	expected_conflicts.
+	(expected_rr_conflicts): Declare.
+
+	* src/conflicts.c (expected_sr_conflicts): Rename from
+	expected_conflicts.
+	(expected_rr_conflicts): Define.
+	(conflicts_print): Check r/r conflicts against expected_rr_conflicts
+	for GLR parsers.
+	Use expected_sr_conflicts in place of expected_conflicts.
+	Warn if expected_rr_conflicts used in non-GLR parser.
+
+	* doc/bison.texinfo: Add documentation for %expect-rr.
+
+2004-03-08  Paul Eggert  <eggert@gnu.org>
+
+	Add support for hex token numbers.  Suggested by Odd Arild Olsen in
+	<http://lists.gnu.org/archive/html/bison-patches/2004-03/msg00000.html>.
+
+	* NEWS: Document hexadecimal tokens, no NUL bytes, %destructor
+	in lalr1.cc.
+	* doc/bison.texinfo (Token Decl): Add hexadecimal token numbers.
+	* src/scan-gram.l (scan_integer): New function.
+	({int}): Use it.
+	(0[xX][0-9abcdefABCDEF]+): New pattern, to support hex numbers.
+	(<SC_ESCAPED_STRING,SC_ESCAPED_CHARACTER>, \\x[0-9abcdefABCDEF]+,
+	handle_action_dollar, handle_action_at, convert_ucn_to_byte):
+	Say "long int", not "long", for uniformity with GNU style.
+
+2004-02-25  Paul Eggert  <eggert@twinsun.com>
+
+	* tests/local.at (AT_COMPILE, AT_COMPILE_CXX): Ignore stdout from
+	compilers.  This fixes a problem with Intel's C++ compiler being
+	chatty, reported by Guido Trentalancia in
+	<http://lists.gnu.org/archive/html/bug-bison/2004-02/msg00030.html>.
+
+2004-02-09  Alexandre Duret-Lutz  <adl@gnu.org>
+
+	Support %destructor and merge error locations in lalr1.cc.
+
+	* data/lalr1.cc (b4_cxx_destruct_def): New macro.
+	(Parser::stos_): Define unconditionally.
+	(Parser::destruct_): New method.  Generate its body with
+	b4_yydestruct_generate.
+	(Parser::error_start_): New attribute.
+	(Parser::parse) <yyerrlab, yyerrlab1>: Call destruct_ on erroneous
+	token which are discarded.
+	(Parser::parse) <yyerrlab, yyerrorlab, yyerrlab1>: Update
+	error_start_ when erroneous token are discarded.
+	(Parser::parse) <yyerrlab1>: Compute the location of the error
+	token so that it covers all the discarded tokens.
+	* tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Adjust so
+	it can be called with `%skeleton "lalr1.cc"', and do that.
+
+2004-02-02  Paul Eggert  <eggert@twinsun.com>
+
+	* src/Makefile.am (AM_CPPFLAGS): New macro.  It mentions
+	$(top_srcdir)/lib and ../lib.  This fixes a bug reported
+	by Paul Hilfinger; the old INCLUDES value didn't mention ../lib.
+	There's no need to mention top_builddir since Automake does that
+	for us.
+	(INCLUDES): Remove, as Automake says it's obsolescent.
+	Contents migrated into AM_CPPFLAGS as described above.
+	* lib/Makefile.am (INCLUDES): Remove; obsolescent.
+
+2004-01-14  Paul Hilfinger  <hilfingr@CS.Berkeley.EDU>
+
+	* data/glr.c (yytokenName): Bullet-proof against YYEMPTY token.
+	(yyreportSyntaxError): Handle case where lookahead token is
+	YYEMPTY.
+
+2004-01-13  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>
+
+	* data/glr.c: Put casts on uses of YYREALLOC and YYMALLOC so that
+	resulting parsers are compilable with C++.
+
+2003-12-23  Paul Eggert  <eggert@twinsun.com>
+
+	* config/depcomp, config/install-sh: Sync with Automake 1.8.
+	* src/output.c (output_skeleton): Rename local var.
+	* tests/input.at (Torturing the Scanner): Don't use \x0 or \0 in
+	Bison tokens, as this runs afoul of the 2003-10-07 change that
+	disallowed NUL bytes in character constants or string literals.
+
+	* tests/local.at: Require Autoconf 2.59's Autotest.
+	* tests/testsuite.at: Don't include local.at, since we now assume
+	Autoconf 2.59 or later.  Autoconf 2.59 had some problems with
+	including it.
+	* tests/Makefile.am ($(TESTSUITE)): Remove warning about ignoring
+	multiple inclusion warnings.
+
+2003-12-02  Akim Demaille  <akim@epita.fr>
+
+	* doc/bison.texinfo (How Can I Reset the Parser): More about start
+	conditions.
+	From Bruno Haible.
+
+2003-11-18  Alexandre Duret-Lutz  <adl@gnu.org>
+
+	* doc/bison.texinfo (Bison Options): Escape `@' in `$@'.
+
+2003-10-07  Paul Eggert  <eggert@twinsun.com>
+
+	* tests/Makefile.am (clean-local): Don't run 'testsuite --clean'
+	if testsuite doesn't exist.
+
+	* doc/bison.texinfo (Symbols): NUL bytes are not allowed in string
+	literals, unfortunately.
+	* src/scan-gram.l (<SC_ESCAPED_STRING,SC_ESCAPED_CHARACTER>):
+	Complain about NUL bytes in character constants or string literals.
+
+2003-10-05  Paul Eggert  <eggert@twinsun.com>
+
+	* NEWS: Don't document %no-default-prec, as it's still
+	too experimental.
+	* doc/bison.texinfo: Document %no-default-prec only if
+	the defaultprec flag is set.  Normally it's not.
+
+2003-10-04  Paul Eggert  <eggert@twinsun.com>
+
+	* data/glr.c (b4_rhs_value, b4_rhs_location): Yield a
+	non-modifiable lvalue, instead of a modifiable one.
+	* doc/bison.texinfo (Actions): Document that $$ can
+	be assigned to.  Do not claim that $$ and $N are
+	array element references: user code should not rely on this.
+
+2003-10-01  Paul Eggert  <eggert@twinsun.com>
+
+	* src/parse-gram.h (PERCENT_NO_DEFAULT_PREC): New token.
+	(grammar_declaration): Use it.
+	* src/scan-gram.l: New token %no-default-prec.
+	* tests/conflicts.at: Revamp tests to use %no-default-prec.
+	* NEWS, doc/bison.texinfo: Document the above.
+
+2003-10-01  Akim Demaille  <akim@epita.fr>
+
+	VCG no longer supports long_straight_phase.
+
+	* src/vcg.c, src/vcg.h: Remove the handling of long_straight_phase.
+	* src/print_graph.c (print_graph): Adjust.
+
+2003-09-30  Frank Heckenbach  <frank@g-n-u.de>
+	and Paul Eggert  <eggert@twinsun.com>
+
+	* doc/bison.texinfo (Decl Summary, Contextual Precedence,
+	Table of Symbols): Document %default-prec.
+	* src/parse-gram.y (PERCENT_DEFAULT_PREC): New token.
+	(grammar_declaration): Set default_prec on %default-prec.
+	* src/scan-gram.l (%default-prec): New token.
+	* src/reader.h (default_prec): New flag.
+	* src/reader.c: Likewise.
+	(packgram): Handle it.
+	* tests/conflicts.at (%default-prec without %prec,
+	%default-prec with %prec, %default-prec 1): New tests.
+
+2003-09-30  Paul Eggert  <eggert@twinsun.com>
+
+	* tests/testsuite.at: Include local.at, not input.at, fixing
+	a typo in the 2003-08-25 patch.
+
+2003-08-27  Akim Demaille  <akim@epita.fr>
+
+	* data/lalr1.cc (yyparse) [__GNUC__]: "Use" yyerrorlab to pacify
+	GCC warnings.
+
+2003-08-26  Akim Demaille  <akim@epita.fr>
+
+	* config/announce-gen (print_changelog_deltas): Neutralize "<#" as
+	"<\#" to avoid magic from Gnus when posting parts of this script.
+
+2003-08-26  Akim Demaille  <akim@epita.fr>
+
+	* data/lalr1.cc (Parser::report_syntax_error_): New, extracted from
+	(Parser::parse): here.
+	Adjust: nerrs and errstatus is now replaced by...
+	(Parser::nerrs_, Parser::errstatus_): New.
+
+2003-08-25  Akim Demaille  <akim@epita.fr>
+
+	* config/announce-gen, Makefile.cfg: New.
+	* Makefile.am: Adjust.
+	* GNUmakefile, Makefile.maint: Update from CVS Autoconf, but
+	keeping local WGET and WGETFLAGS modifications from Paul Eggert.
+
+2003-08-25  Akim Demaille  <akim@epita.fr>
+
+	When reducing initial empty rules, Bison parser read an initial
+	location that is not defined.  This results in garbage, and that
+	affects Bison's own parser.  Therefore we need (i) to extend Bison
+	to support a means to initialize this location, and (ii) to use
+	this CVS Bison to fix CVS Bison's parser.
+
+	* src/reader.h, reader.c (epilogue_augment): Remove, replace
+	with...
+	* src/muscle_tab.h, src/muscle_tab.c (muscle_code_grow): this.
+	* src/parse-gram.y: Adjust.
+	(%initial-action): New.
+	(%error-verbose): Since we require CVS Bison, there is no reason
+	not to use it.
+	* src/scan-gram.l: Adjust.
+	* src/Makefile.am (YACC): New, to make sure we use our own parser.
+	* data/yacc.c (yyparse): Use b4_initial_action.
+
+2003-08-25  Akim Demaille  <akim@epita.fr>
+
+	* doc/bison.texinfo: Don't promote stdout for error messages.
+
+2003-08-25  Akim Demaille  <akim@epita.fr>
+
+	* data/lalr1.cc (Parser::reduce_print_): Remove unused yyi.
+	From Alexandre Duret-Lutz.
+
+2003-08-25  Akim Demaille  <akim@epita.fr>
+
+	Version 1.875c.
+
+2003-08-25  Akim Demaille  <akim@epita.fr>
+
+	* data/lalr1.cc (Parser::stack_print_, YY_STACK_PRINT): New.
+	Use them.
+
+2003-08-25  Akim Demaille  <akim@epita.fr>
+
+	* data/lalr1.cc (Parser::reduce_print_): New.
+	Use it.
+
+2003-08-25  Akim Demaille  <akim@epita.fr>
+
+	Have lalr1.cc catch with Paul Eggert's patch to fix the infinite
+	error recovery loops.  This patch is based on
+	<http://lists.gnu.org/archive/html/bison-patches/2003-06/msg00000.html>.
+	Also, augment the similarity between lalr1.cc and yacc.c.
+	Note: the locations of error recovery rules are not correct yet.
+
+	* data/lalr1.cc: Comment changes to augment the similarity between
+	lalr1.cc and yacc.c.
+	(YYERROR): Goto to yyerrorlab, not yyerrlab1.
+	(yyerrlab1): Remove, but where it used to be (now the bottom part of
+	yyerrlab), when hitting EOF, pop the whole stack here instead of
+	merely falling through the default error handling mechanism.
+	(yyerrorlab): New label, with the old contents of YYERROR,
+	plus the following change: pop the stack of rhs corresponding
+	to the production that invoked YYERROR.  That is how Yacc
+	behaves (required by POSIX).
+	* tests/calc.at (AT_CHECK_CALC_LALR1_CC): No longer expected to
+	fail.
+
+2003-08-25  Akim Demaille  <akim@epita.fr>
+
+	Tune local.at so that people can "autom4te -l autotest calc.at -o
+	calc" for instance, to extract a sub test suite.
+
+	* tests/testsuite.at: Move the initialization, Autotest version
+	requirement, and AT_TESTED invocation into...
+	* tests/local.at: here.
+	* tests/testsuite.at: Include it for compatibility with Autoconf
+	2.57.
+	* tests/Makefile.am ($(TESTSUITE)): Report that the warning should
+	be ignore.
+
+2003-08-04  Paul Eggert  <eggert@twinsun.com>
+
+	Rework code slightly to avoid gcc -Wtraditional warnings.
+	* data/glr.c (yyuserMerge): Return void, not YYSTYPE.
+	The returned value is now stored in *YY0.  All callers changed.
+	* src/output.c (merge_output): Adjust to the above change.
+
+2003-07-26  Paul Eggert  <eggert@twinsun.com>
+
+	* data/glr.c (YYASSERT): New macro.
+	(yyfillin, yydoAction, yyglrReduce, yysplitStack,
+	yyresolveStates, yyprocessOneStack):
+	Use `YYASSERT (FOO);' rather than `if (! (FOO)) abort ();'.
+	Derived from a suggestion by Frank Heckenbach.
+
+2003-07-25  Paul Eggert  <eggert@twinsun.com>
+
+	* data/glr.c (yyglrReduce): Don't use C89 string concatenation,
+	for portability to K&R C (after ansi2knr, presumably).  See
+	<http://lists.gnu.org/archive/html/bison-patches/2003-06/msg00041.html>
+	by Frank Heckenbach, though I have omitted the structure-initialization
+	part of his glr-knr.diff patch since I recall that the Portable
+	C Compiler didn't require that change.
+
+	Let the user specify how to allocate and free memory.
+	Derived from a suggestion by Frank Heckenbach in
+	<http://lists.gnu.org/archive/html/bison-patches/2003-06/msg00041.html>.
+	* data/glr.c (YYFREE, YYMALLOC, YYREALLOC): New macros.
+	All uses of free, malloc, realloc changed to use these macros,
+	and unnecessary casts removed.
+	* data/yacc.c (YYFREE, YYMALLOC): Likewise.
+
+2003-07-06  Matthias Mann  <MatthiasMann@gmx.de>
+
+	* data/lalr1.cc (operator<<(std::ostream&, const Position&)):
+	use s.empty() rather than s == "" to test for empty string; see
+	<http://lists.gnu.org/archive/html/bison-patches/2003-07/msg00003.html>
+	(trivial change)
+
+2003-06-25  Akim Demaille  <akim@epita.fr>
+
+	* config/depcomp, config/install-sh: Update from masters.
+
+2003-06-20  Paul Eggert  <eggert@twinsun.com>
+
+	* data/glr.c (YYLLOC_DEFAULT): Parenthesize arguments as needed,
+	and return properly parenthesized result.
+	* data/lalar1.cc (YYLLOC_DEFAULT): Likewise.
+	* data/yacc.c (YYLLOC_DEFAULT): Likewise.
+	Remove unnecessary parentheses from uses.
+	* doc/bison.texinfo (Location Default Action): Describe the
+	conventions for parentheses.
+
+2003-06-19  Paul Eggert  <eggert@twinsun.com>
+
+	* data/glr.c (yyremoveDeletes, yy_reduce_print, yyglrReduce,
+	yyreportTree): Do not assume that size_t is the same width as int,
+	when printing sizes.  Print sizes using an unsigned format.
+	Problem reported by Frank Heckenbach in
+	<http://lists.gnu.org/archive/html/bison-patches/2003-06/msg00035.html>.
+
+	Port to Forte Developer 7 C compiler.
+	* data/glr.c (struct YYLTYPE): If locations are not being used,
+	declare a single dummy member, as empty structs do not conform
+	to the C standard.
+	(YYERROR, YYBACKUP): Do not use "do { ...; return foo; } while (0)";
+	the Forte Developer 7 C compiler complains that end-of-loop
+	code is not reached.
+
+2003-06-17  Paul Eggert  <eggert@twinsun.com>
+
+	* lib/libiberty.h (PARAMS): Spell argument as Args, not as X, to
+	avoid warnings from picky compilers about redefinition of PARAMS.
+
+2003-06-17  Paul Eggert  <eggert@twinsun.com>
+
+	Version 1.875b.
+
+	* NEWS: Document 1.875b.
+
+	* lib/bbitset.h: Do not include config.h; that's the includer's job.
+	Do not include <sys/types.h>; shouldn't be needed on a C89 host.
+	* lib/bitset.h (bitset_compatible_p): Indent as per GNU standard.
+	Don't use 'index' in comments, as it's a builtin fn on some hosts.
+	* lib/bitset_stats.c: Include gettext.h unconditionally, as
+	per recent gettext manual's suggestion.
+	* lib/ebitset.c (ebitset_resize, ebitset_unused_clear):
+	Use prototypes, not old-style definitions.
+	* lib/lbitset.c (lbitset_unused_clear): Likewise.
+	* lib/vbitset.c (vbitset_resize, vbitset_ones, vbitset_zero,
+	vbitset_empty_p, vbitset_copy1, vbitset_not, vbitset_equal_p,
+	vbitset_subset_p, vbitset_disjoint_p, vbitset_and, vbitset_and_cmp,
+	vbitset_andn, vbitset_andn_cmp, vbitset_or, vbitset_or_cmp,
+	vbitset_xor, vbitset_xor_cmp, vbitset_and_or, vbitset_and_or_cmp,
+	vbitset_andn_or, vbitset_andn_or_cmp, vbitset_or_and,
+	vbitset_or_and_cmp, vbitset_copy): Likewise.
+
+	* lib/libiberty.h: Do not include config.h; that's the includer's job.
+	Do not include <stdlib.h>.
+	(PARAMS): Define unconditionally for C89.
+	(ATTRIBUTE_NORETURN): Remove.
+	(ATTRIBUTE_UNUSED): Define unconditionally.
+
+	Upgrade to 2003-06-08 libbitset, submitted by Michael Hayes in:
+	<http://lists.gnu.org/archive/html/bison-patches/2003-06/msg00005.html>
+	* lib/Makefile.am (bitsets_sources): Add vbitset.c, vbitset.h.
+	* lib/vbitset.c, lib/vbitset.h: New files.
+	* lib/abitset.c, lib/bbitset.h, lib/bitset.c, lib/bitset.h,
+	lib/bitset_stats.c, lib/ebitset.c, lib/lbitset.c: Import
+	from libbitset.
+
+	* doc/bison.texinfo (How Can I Reset the Parser): Renamed from
+	`How Can I Reset @code{yyparse}', since texinfo does not allow
+	arbitrary @ in node names.
+
+	* m4/Makefile.am (EXTRA_DIST): Add the following files, which
+	shouldn't be needed according to the gettext 0.12.1 documentation
+	but which seem to be needed anyway: codeset.m4 glibc21.m4
+	intdiv0.m4 inttypes-pri.m4 inttypes.m4 inttypes_h.m4 isc-posix.m4
+	lcmessage.m4 nls.m4 po.m4 stdint_h.m4 uintmax_t.m4 ulonglong.m4.
+	* po/Makefile.in.in: Upgrade to gettext 0.12.1 version.
+
+	* lib/.cvsignore: Add stdbool.h.
+	* m4/.cvsignore: Add nls.m4, po.m4.
+
+	Upgrade to CVS gnulib.
+	* stdbool_.h: File renamed from stdbool.h.in.
+	* configure.ac (AM_STDBOOL_H): Invoke this instead of
+	AC_HEADER_STDBOOL.
+	(AM_GNU_GETTEXT): Put brackets around args, as latest manual suggests.
+	(AM_GNU_GETTEXT_VERSION): Update to 0.12.1.
+	* lib/Makefile.am (EXTRA_DIST): Add stdbool_.h.
+	(MOSTLYCLEANFILES): New var.
+	($(libbison_a_OBJECTS)): Depend on $(STDBOOL_H).
+	(stdbool.h): New rule.
+	* lib/dirname.c, lib/dirname.h, lib/hash.c, lib/hash.h,
+	lib/malloc.c, lib/obstack.h, lib/quote.c, lib/realloc.c,
+	lib/strcasecmp.c, lib/xalloc.h, m4/alloca.m4, m4/onceonly.m4,
+	m4/quote.m4: Upgrade to today's gnulib.
+
+	* tests/calc.at (AT_CHECK_CALC): New option EXPECTED-TO-FAIL.
+	(AT_CHECK_CALC_LALR1_CC): Use it, since the C++ LALR parser fails
+	the tests right now.
+	* tests/cxx-type.at (_AT_TEST_GLR_CXXTYPES): Ensure yylex and
+	yyerror are declared before use; C99 requires this.
+
+2003-06-09  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>
+
+	* data/glr.c (YYERROR): Update definition to reset yyerrState to 0
+	first.
+	(yyrecoverSyntaxError): Correct the logic for setting and testing
+	yyerrState.
+	Correct comment on handling EOF.
+	Allow states with only a default reduction, rather than failing
+	(I can't quite reconstruct why these were not allowed before).
+
+	Fixes to avoid problem that $-N rules in GLR parsers can cause
+	buffer overruns, corrupting state.
+
+	* src/output.c (prepare_rules): Output max_left_semantic_context
+	definition.
+	* src/reader.h (max_left_semantic_context): New variable declaration.
+	* src/scan-gram.l (max_left_semantic_context): Define.
+	(handle_action_dollar): Update max_left_semantic_context.
+	* data/glr.c (YYMAXLEFT): New definition.
+	(yydoAction): Increase size of yyrhsVals by YYMAXLEFT.
+	(yyresolveAction): Ditto.
+
+	Fixes to problems with location handling in GLR parsers reported by
+	Frank Heckenbach (2003/06/05).
+
+	* data/glr.c (YYLTYPE): Make trivial if locations not used.
+	(YYRHSLOC): Add parentheses, and define only if locations used.
+	(YYLLOC_DEFAULT): Add parentheses, and give trivial definition if
+	locations not used.
+	(yyuserAction): Use YYLLOC_DEFAULT to set *yylocp.
+	(yydoAction): Remove redundant initialization of *yyvalp and *yylocp.
+
+	* tests/cxx-type.at: Exercise location information; update tests
+	to differentiate output with and without locations.
+	Remove forward declarations of yylex and yyerror---caused errors
+	because default YYLTYPE not yet defined.
+	Change semantic actions to compute strings, rather than printing
+	them directly (to test proper passing of semantics values).  Change
+	output to prefix notation and update test data and expected results.
+	(yylex): Track locations.
+	(stmtMerge): Return value rather than printing, and include arguments
+	in value.
+
+2003-06-03  Paul Eggert  <eggert@twinsun.com>
+
+	Avoid warnings generated by GCC 2.95.4 when Bison is
+	configured with --enable-gcc-warnings.
+	* data/lalr1.cc (yy::]b4_parser_class_name[::parse,
+	yy::]b4_parser_class_name[::translate_,
+	yy::Stack::operator[] (unsigned),
+	yy::Stack::operator[] (unsigned) const,
+	yy::Slice::operator[] (unsigned),
+	yy::Slice::operator[] (unsigned) const):
+	Rename local vars to avoid warnings.
+	* tests/glr-regression.at (Improper handling of embedded actions
+	and $-N in GLR parsers): Remove unused local variable from yylex.
+	* tests/regression.at (_AT_DATA_DANCER_Y): Declare yylex to take
+	(void) as arg when not pure, since we now assume C89 when building
+	Bison.  Pacify GCC by using parameter.
+
+2003-06-02  Paul Eggert  <eggert@twinsun.com>
+
+	* data/lalr1.cc (yy::Position::lines, yy::Position::columns,
+	yy::Location::lines, yy::Location::columns): Rename arguments
+	to avoid shadowing; this removes a warning generated by GCC 3.3.
+
+2003-06-01  Paul Eggert  <eggert@twinsun.com>
+
+	Don't pass C-only warning optins (e.g., -Wmissing-declarations)
+	to g++, as GCC 3.3 complains if you do it.
+	* configure.ac (WARNING_CXXFLAGS): New subst.  Set it to
+	everything that WARNING_CFLAGS has, except omit warnings
+	not suitable for C++.
+	(AC_PROG_CXX): Use this instead of AC_CHECK_PROGS([CXX], [g++]).
+	* tests/atlocal.in (CXXFLAGS): New var.
+	* tests/local.at (AT_COMPILE_CXX): Use it instead of CFLAGS.
+
+	Fix a GLR parser bug I reported in February; see
+	<http://lists.gnu.org/archive/html/bison-patches/2003-02/msg00008.html>.
+	The problem was that GLR parsers did not conform to the C standard,
+	because actions like { $1 = $2 + $3; } expanded to expressions
+	that invoked YYFILL in separate subexpressions, and YYFILL assigned
+	to a local variable.  The C standard says that expressions
+	like (var = f ()) + (var = f ()) have undefined behavior.
+	Another problem was that GCC sometimes issues warnings that
+	yyfill and its parameters are unused.
+
+	* data/glr.c (yyfillin): Renamed from the old yyfill.  Mark
+	as possibly unused.
+	(yyfill): New function.
+	(YYFILL): Use it.
+	(yyuserAction): Change type of yynormal to bool, so that it matches
+	the new yyfill signature.  Mark it as possibly unused.
+
+
+	Follow up on a bug I reported in February, where a Bison-generated
+	parser can loop.  Provide a test case and a fix for yacc.c.  I
+	don't have a fix for lalr1.cc or for glr.c, unfortunately.
+	The original bug report is in:
+	<http://lists.gnu.org/archive/html/bison-patches/2003-02/msg00044.html>
+
+	* data/yacc.c (YYERROR): Now just 'goto yyerrorlab', since the
+	macro's size was becoming unwieldy.
+	(yyerrlab): Do not discard an empty lookahead symbol, as this
+	might destroy garbage.
+	(yyerrorlab): New label, with the old contents of YYERROR,
+	plus the following change: pop the stack of rhs corresponding
+	to the production that invoked YYERROR.  That is how Yacc
+	behaves, and POSIX requires this behavior.
+	(yyerrlab1): Use YYPOPSTACK instead of its definiens.
+	* tests/calc.at (_AT_DATA_CALC_Y): Include unistd.h if available.
+	Define 'alarm' to do nothing if unistd.h is not available.
+	Add a new rule "exp: '-' error;" to test the above change to
+	data/yacc.c.  Use 'alarm' to abort any test taking longer than
+	10 seconds, as it's probably looping.
+	(AT_CHECK_CALC): Test recovery from error in new grammar rule.
+	Also, the new yacc.c generates two fewer diagnostics for an
+	existing test.
+
+2003-05-24  Paul Eggert  <eggert@twinsun.com>
+
+	* data/glr.c (YYSTACKEXPANDABLE): Do not evaluate
+	YYSTYPE_IS_TRIVIAL or YYSTYPE_IS_TRIVIAL unless they are defined.
+	This fixes a problem reported by John Bowman when the Compaq/HP
+	Alpha cxx compiler happy (e.g. using cxx -D__USE_STD_IOSTREAM
+	-ansi -Wall -gall).
+	* data/yacc.c (union yyalloc): Likewise.
+	(YYCOPY): Do not evaluate __GNUC__ unless it is defined.
+
+	Switch from 'int' to 'bool' where that makes sense.
+
+	* lib/abitset.c (abitset_test, abitset_empty_p, abitset_equal_p,
+	abitset_subset_p, abitset_disjoint_p, abitset_and_cmp,
+	abitset_andn_cmp, abitset_or_cmp, abitset_xor_cmp, abitset_and_or,
+	abitset_and_or_cmp, abitset_andn_or_cmp, abitset_or_and_cmp):
+	Return or accept bool, not int.  All callers changed.
+	* lib/bbitset.h: (bitset_toggle_, bitset_copy_, bitset_and_or_cmp_,
+	bitset_andn_or_cmp_, bitset_or_and_cmp_): Likewise.
+	* lib/bitset.c (bitset_only_set_p, bitset_print, bitset_toggle_,
+	bitset_copy_, bitset_op4_cmp, bitset_and_or_cmp_, bitset_andn_or_cmp_,
+	bitset_or_and_cmp_): Likewise.
+	* lib/bitset.h (bitset_test, bitset_only_set_p): Likewise.
+	* lib/bitset_stats.c (bitset_stats_print, bitset_stats_toggle,
+	bitset_stats_test, bitset_stats_empty_p, bitset_stats_disjoint_p,
+	bitset_stats_equal_p, bitset_stats_subset_p, bitset_stats_and_cmp,
+	bitset_stats_andn_cmp, bitset_stats_or_cmp, bitset_stats_xor_cmp,
+	bitset_stats_and_or_cmp, bitset_stats_andn_or_cmp,
+	bitset_stats_or_and_cmp): Likewise.
+	* lib/ebitset.c (ebitset_elt_zero_p, ebitset_equal_p, ebitset_copy_cmp,
+	ebitset_test, ebitset_empty_p, ebitset_subset_p, ebitset_disjoint_p,
+	ebitset_op3_cmp, ebitset_and_cmp, ebitset_andn_cmp, ebitset_or_cmp,
+	ebitset_xor_cmp): Likewise.
+	* lib/lbitset.c (lbitset_elt_zero_p, lbitset_equal_p, lbitset_copy_cmp,
+	lbitset_test, lbitset_empty_p, lbitset_subset_p, lbitset_disjoint_p,
+	lbitset_op3_cmp, lbitset_and_cmp, lbitset_andn_cmp, lbitset_or_cmp,
+	lbitset_xor_cmp): Likewise.
+	* lib/bbitset.h: Include <stdbool.h>.
+	(struct bitset_vtable): The following members now return bool, not
+	int: toggle, test, empty_p, disjoint_p, equal_p, subset_p,
+	and_cmp, andn_cmp, or_cmp, xor_cmp, and_or_cmp, andn_or_cmp,
+	or_and_cmp).
+	* src/conflicts.c (count_rr_conflicts): Likewise.
+	* lib/bitset_stats.h (bitset_stats_enabled): Now bool, not int.
+	All uses changed.
+	* lib/ebitset.c (ebitset_obstack_init): Likewise.
+	* lib/lbitset.c (lbitset_obstack_init): Likewise.
+	* src/getargs.c (debug_flag, defines_flag, locations_flag,
+	no_lines_flag, no_parser_flag, token_table_flag, yacc_flag,
+	graph_flag): Likewise.
+	* src/getargs.h (debug_flag, defines_flag, locations_flag,
+	no_lines_flag, no_parser_flag, token_table_flag, yacc_flag,
+	graph_flag): Likewise.
+	* src/output.c (error_verbose): Likewise.
+	* src/output.h (error_verbose): Likewise.
+	* src/reader.c (start_flag, typed): Likewise.
+	* src/reader.h (typed): Likewise.
+	* src/getargs.c (LOCATIONS_OPTION): New constant.
+	(long_options, getargs): Use it.
+	* src/lalr.c (build_relations): Use bool, not int.
+	* src/nullable.c (nullable_compute): Likewise.
+	* src/print.c (print_reductions): Likewise.
+	* src/tables.c (action_row, pack_vector): Likewise.
+	* src/muscle_tab.h (MUSCLE_INSERT_BOOL): New macro.
+	* src/output.c (prepare): Use it.
+	* src/output.c (token_definitions_output,
+	symbol_destructors_output, symbol_destructors_output): Use string,
+	not boolean integer, to keep track of whether to output separator.
+	* src/print_graph.c (print_core): Likewise.
+	* src/state.c (state_rule_lookaheads_print): Likewise.
+
+	* config/install-sh: Sync from automake 1.7.5.
+
+2003-05-14  Paul Eggert  <eggert@twinsun.com>
+
+	* src/parse-gram.y (rules_or_grammar_declaration): Require a
+	semicolon after a grammar declaration, in the interest of possible
+	future changes to the Bison input language.
+	Do not allow a stray semicolon at the start of the grammar.
+	(rhses.1): Allow one or more semicolons after any rule, including
+	just before "|" as required by POSIX.
+	* tests/input.at (Torturing the Scanner): Add tests for ";|" in a
+	grammar.
+
+2003-05-14  Alexandre Duret-Lutz  <adl@gnu.org>
+
+	%parse-param support for lalr1.cc.
+
+	* data/lalr1.cc (b4_parse_param_decl, b4_parse_param_cons,
+	b4_cc_constructor_calls, b4_cc_constructor_call,
+	b4_parse_param_vars, b4_cc_var_decls, b4_cc_var_decl): New m4
+	definitions.
+	(yy::b4_parser_class_name::b4_parser_class_name): Take extra
+	parse-param arguments.
+	(yy::b4_parser_class_name): Declare instance variables to
+	hold parse-param arguments.
+	* tests/calc.at: s/value/semantic_value/ because value clashes
+	with a member of yy::b4_parser_class_name.  Adjust C++ code
+	to handle %parse-param.  Enable %parse-param test in C++.
+
+2003-05-12  Paul Eggert  <eggert@twinsun.com>
+
+	* doc/bison.texinfo (How Can I Reset @code{yyparse}): Reword the
+	English a bit.  Fix fclose typo.  Change "const char" to "char
+	const", and use ANSI C rather than K&R for "main".  Suggest
+	YY_FLUSH_BUFFER over yyrestart (as that is what Flex recommends)
+	and suggest yy_switch_to_buffer.
+
+2003-05-05  Paul Eggert  <eggert@twinsun.com>
+
+	* lib/bitset.h (__INT_TO_PTR): Define to a value that presumes
+	C89.  This avoids a diagnostic on compilers that define __STDC__
+	to 0, fixing a problem with Tru64 cc reported by Martin Mokrejs in
+	<http://lists.gnu.org/archive/html/bug-bison/2003-04/msg00041.html>.
+
+2003-05-03  Paul Eggert  <eggert@twinsun.com>
+
+	* lib/bitset.h (BITSET_FOR_EACH, BITSET_FOR_EACH_REVERSE):
+	Do not overrun array bounds.
+	This should fix a bug reported today by Olatunji Oluwabukunmi in
+	<http://lists.gnu.org/archive/html/bug-bison/2003-05/msg00004.html>.
+
+2003-04-29  Akim Demaille  <akim@epita.fr>
+
+	* src/gram.h, src/gram.c (pure_parser, glr_parser): Move to...
+	* src/getargs.c, src/getargs.h: here, as bool, not int.
+	(nondeterministic_parser): New.
+	* src/parse-gram.y, src/scan-gram.l: Support
+	%nondeterministic-parser.
+	* src/output.c (prepare): Use nondeterministic_parser instead
+	of glr_parser where appropriate.
+	* src/tables.c (conflict_row, action_row, save_row)
+	(token_actions, token_actions, pack_vector): Ditto.
+
+2003-04-29  Akim Demaille  <akim@epita.fr>
+
+	* doc/bison.texinfo (C++ Parsers, Implementing Loops): New.
+
+2003-04-29  Akim Demaille  <akim@epita.fr>
+
+	* tests/calc.at: Also test yacc.c and glr.c (but not lalr1.cc yet)
+	with %pure-parser and %locations to exercise the patch from Yakov
+	Markovitch below.
+
+2003-04-28  Tim Van Holder <tim.van.holder@pandora.be>
+
+	* data/yacc.c: (b4_lex_param): Corrected for the case where
+	%lex-param is provided and %pure-parser isn't.
+
+2003-04-27  Paul Eggert  <eggert@twinsun.com>
+
+	Avoid gcc -Wundef warnings reported by Gerald Pfeifer in
+	<http://lists.gnu.org/archive/html/bug-bison/2003-04/msg00044.html>.
+	* data/yacc.c (YYSTACK_ALLOC): Don't evaluate YYSTACK_USE_ALLOCA
+	if it is not defined.
+	(YYMAXDEPTH): Don't evaluate YYMAXDEPTH if it is not defined.
+
+2003-04-26  Paul Eggert  <eggert@twinsun.com>
+
+	* data/lalr1.cc (yy::Parser::pact_ninf_, yy::Parser::table_ninf_):
+	Declare to be of type suitable for the ninf value itself, not of
+	type suitable for the corresponding table, since the latter might
+	be unsigned but the ninf value might be negative.  This fixes a
+	bug reported by Alexandre Duret-Lutz in
+	<http://lists.gnu.org/archive/html/bug-bison/2003-04/msg00017.html>.
+
+	* configure.ac (AC_FUNC_ERROR_AT_LINE): Remove, since gl_ERROR
+	invokes it.  We shouldn't invoke it twice because it will attempt
+	to put error.o in the archive twice.  This fixes a glitch reported
+	by Martin Mokrejs in
+	<http://lists.gnu.org/archive/html/bug-bison/2003-04/msg00041.html>.
+
+2003-04-21  Paul Eggert  <eggert@twinsun.com>
+
+	* m4/error.m4: Update from Bruno Haible's 2003-04-14 patch
+	to gnulib.
+
+2003-04-21  Yakov Markovitch <Markovitch@iso.ru>
+
+	* data/glr.c (yyexpandGLRStack) [!YYSTACKEXPANDABLE]:
+	Fix obvious typo that results in uncompilable GLR parsers
+	when both %pure-parser and %locations are used.  (trivial change)
+
+2003-04-17  Paul Eggert  <eggert@twinsun.com>
+
+	* src/scan-gram.l: Add %option nounput, since we no longer use unput.
+	(unexpected_eof): Renamed from unexpected_end_of_file, for brevity.
+	Do not insert the expected token via unput, as this runs afoul
+	of a POSIX-compatibility bug in flex 2.5.31.
+	All uses changed to BEGIN the parent state,
+	since we no longer insert the expected token via unput.
+	* tests/regression.at (Invalid inputs): Remove cascaded diagnostic
+	that is no longer emitted after the above change.
+
+	* src/conflicts.c (set_conflicts): Resolve all conflicts, not just
+	the first one.  This change is from Paul Hilfinger, and it fixes
+	regression reported by Werner Lemberg in
+	<http://lists.gnu.org/archive/html/bug-bison/2003-04/msg00026.html>.
+
+	(resolve_sr_conflict): Don't invoke state_errs_set
+	unless one or more tokens have been explicitly made errors.
+	Otherwise, the above change causes Bison to abort.
+
+	* tests/existing.at (GNU pic Grammar): New test case, taken from
+	Lemberg's email.
+
+2003-03-31  Akim Demaille  <akim@epita.fr>
+
+	* doc/Makefile.am (AM_MAKEINFOFLAGS): Don't split the info file.
+
+2003-03-31  Akim Demaille  <akim@epita.fr>
+
+	* src/output.c (prepare_symbols): Avoid trailing spaces in the
+	output.
+
+2003-03-31  Akim Demaille  <akim@epita.fr>
+
+	* doc/bison.texinfo (Strings are Destroyed): s/losses/loses/.
+	From Paul Hilfinger.
+
+2003-03-29  Akim Demaille  <akim@epita.fr>
+
+	* m4/error.m4: Do not put under dynamic conditions some code which
+	expansion is under static control.
+
+2003-03-29  Akim Demaille  <akim@epita.fr>
+
+	* doc/bison.texinfo (How Can I Reset @code{yyparse}): New.
+
+2003-03-29  Akim Demaille  <akim@epita.fr>
+
+	* doc/bison.texinfo (Strings are Destroyed): New.
+
+2003-03-13  Paul Eggert  <eggert@twinsun.com>
+
+	* .cvsignore: Add configure.lineno.
+	* src/.cvsignore: Add yacc.
+	* tests/.cvsignore: Add testsuite.log.
+	* doc/fdl.texi: Sync with latest FSF version.
+
+2003-03-12  Paul Eggert  <eggert@twinsun.com>
+
+	* scan-gram.l (YY_USER_INIT): Initialize code_start, too.
+	(<INITIAL><<EOF>>, <SC_PRE_CODE><<EOF>>): Set *loc to the scanner
+	cursor, instead of leaving it undefined.  This fixes a bug
+	reported by Tim Van Holder in
+	<http://lists.gnu.org/archive/html/bug-bison/2003-03/msg00023.html>.
+	* tests/input.at (Torturing the Scanner): Test the scanner on
+	an empty input file, which was Tim Van Holder's test case.
+
+	* m4/timevar.m4 (BISON_PREREQ_TIMEVAR): When checking whether
+	<sys/resource.h> can be included, include sys/time.h and
+	sys/times.h first, if available.  This works around the SunOS
+	4.1.4 porting bug reported by Bruce Becker in
+	<http://lists.gnu.org/archive/html/bug-bison/2003-03/msg00018.html>.
+
+	* m4/subpipe.m4 (BISON_PREREQ_SUBPIPE): Don't
+	AC_CHECK_HEADERS([sys/wait.h]), as this interferes with
+	AC_HEADER_SYS_WAIT.
+
+	Merge changes from gnulib.  This was prompted because the CVS
+	snapshot didn't build on Solaris 7 due to strnlen problems.
+
+	These changes need to be merged back into gnulib:
+	* lib/hash.c: Include <stdbool.h> unconditionally.
+	* m4/onceonly.m4 (m4_quote): New macro.
+	(AC_CHECK_HEADERS_ONCE, AC_CHECK_FUNCS_ONCE, AC_CHECK_DECLS_ONCE):
+	Quote AC_FOREACH variable-expansions properly.
+	The 2003-01-03 obstack.h change also needs merging.
+	{end of changes requiring merging}
+
+	* lib/stdbool.h.in, m4/alloca.m4, m4/dirname.m4, m4/dos.m4,
+	m4/getopt.m4, m4/hash.m4, m4/malloc.m4, m4/memchr.m4,
+	m4/memrchr.m4, m4/obstack.m4, m4/onceonly.m4, m4/quote.m4,
+	m4/quotearg.m4, m4/realloc.m4, m4/stpcpy.m4, m4/strnlen.m4,
+	m4/strtol.m4, m4/strtoul.m4, m4/unlocked-io.m4, m4/xalloc.m4:
+	New files, imported from gnulib.
+	* m4/Makefile.am (EXTRA_DIST): Add the new m4/*.m4 files mentioned
+	above.
+
+	* lib/mbswidth.c, m4/error.m4, m4/mbrtowc.m4, m4/mbswidth.m4,
+	m4/memcmp.m4, m4/prereq.m4, m4/stdbool.m4: Update to current
+	gnulib sources.
+
+	* configure.ac (gl_DIRNAME, gl_GETOPT, gl_HASH, gl_QUOTE, gl_XALLOC):
+	Add.
+	(gl_ERROR): New, replacing jm_PREREQ_ERROR.
+	(gl_FUNC_ALLOCA): New, replacing AC_FUNC_ALLOCA.
+	(gl_FUNC_STPCPY): New, replacing AC_REPLACE_FUNCS(stpcpy).
+	(gl_FUNC_STRNLEN): New, replacing AC_FUNC_STRNLEN.
+	(gl_MBSWIDTH): New, replacing jm_PREREQ_MBSWIDTH.
+	(gl_OBSTACK): New, replacing AC_FUNC_OBSTACK.
+	(gl_QUOTEARG): New, replacing jm_PREREQ_QUOTEARG.
+	(jm_FUNC_GLIBC_UNLOCKED_IO, gl_FUNC_STPCPY, gl_FUNC_STRTOL): New.
+	(jm_FUNC_MALLOC): New, replacing AC_FUNC_MALLOC.
+	(jm_FUNC_REALLOC): New, replacing AC_FUNC_REALLOC.
+	(jm_PREREQ_ARGMATCH): Remove.
+	(AC_REPLACE_FUNCS): Remove memchr, memrchr, stpcpy, strtol, strtoul.
+	* lib/Makefile.am (libbison_a_SOURCES): Add argmatch.c, argmatch.h.
+
+	* src/system.h: Include <stdbool.h> unconditionally.
+
+	* lib/bbitset.h: Include <limits.h> unconditionally.  We have been
+	assuming at least C89 in the bitset code for some time now.
+
+2003-03-03  Akim Demaille  <akim@epita.fr>
+
+	* ro.po: New.
+
+2003-03-02  Akim Demaille  <akim@epita.fr>
+
+	* doc/bison.texinfo (Table of Symbols): Reactivate the
+	documentation for %lex-param, and %parse-param.
+
+2003-03-02  Akim Demaille  <akim@epita.fr>
+
+	* data/yacc.c, data/glr.c, data/lal1.cc: Use similar code to
+	generate verbose error messages.
+	Use the number of tokens as an upper bound in yytname, as it
+	cannot be a non terminal.
+
+2003-03-02  Akim Demaille  <akim@epita.fr>
+
+	* tests/regression.at (_AT_DATA_DANCER_Y): Fix the expected error
+	message.
+
+2003-03-02  Akim Demaille  <akim@epita.fr>
+
+	* tests/regression.at (_AT_DATA_DANCER_Y, AT_CHECK_DANCER): New.
+	Use them to exercise yycheck overrun.
+	Based on Andrew Suffield's grammar.
+
+2003-03-02  Akim Demaille  <akim@epita.fr>
+
+	Create tests/local.at for Bison generic testing macros.
+
+	* tests/calc.at (AT_CHECK_PUSHDEFS, AT_CHECK_POPDEFS): Move to...
+	* tests/local.at (AT_BISON_OPTION_PUSHDEFS, AT_BISON_OPTION_POPDEFS):
+	This new file.
+	* tests/calc.at (AT_CHECK_CALC): Adjust.
+	* tests/testsuite.at (AT_DATA_GRAMMAR_PROLOGUE, AT_DATA_GRAMMAR)
+	(AT_COMPILE, AT_COMPILE_CXX, AT_PARSER_CHECK): Move to...
+	* tests/local.at: here.
+	(AT_COMPILE_CXX): Tags the tests using it as c++.
+	Ignore the test if CXX is not functional.
+
+2003-03-01  Paul Eggert  <eggert@twinsun.com>
+
+	* src/scan-gram.l (code_start): Initialize it to scanner_cursor,
+	not loc->end, since loc->end might contain garbage and this leads
+	to undefined behavior on some platforms.
+	(id_loc, token_start): Use (IF_LINTed) initial values that do not
+	depend on *loc, so that the reader doesn't give the the false
+	impression that *loc is initialized.
+	(<INITIAL>"%%"): Do not bother setting code_start, since its value
+	does not survive the return.
+
+2003-03-01  Akim Demaille  <akim@epita.fr>
+
+	* src/scan-gram.l (code_start): Always initialize it when entering
+	into yylex, as SC_EPILOGUE is activated *before* the corresponding
+	yylex invocation.  An alternative would be making it static, but
+	then it starts with the second %%'s beginning, instead of its end.
+
+2003-02-28  Paul Eggert  <eggert@twinsun.com>
+
+	* lib/mbswidth.c: Include <wchar.h> before "mbswidth.h", to work
+	around a UnixWare 7.1.1 porting bug reported by John Hughes in
+	<http://lists.gnu.org/archive/html/bug-bison/2003-02/msg00030.html>.
+
+2003-02-26  Paul Eggert  <eggert@twinsun.com>
+
+	* README: Mention compiler bug in Sun Forte Developer 6 update 2.
+	Remove Sequent/Pyramid discussion (nobody uses them any more).
+	Merge VMS and MS-DOS discussion; these ports may well be dead
+	but let's keep mentioning them for now.  Put <> around email
+	addresses.  Add copyright notice.
+
+2003-02-24  Paul Eggert  <eggert@twinsun.com>
+
+	* data/glr.c (yy_reduce_print): yylineno -> yylno,
+	to avoid collision with flex use of yylineno.
+	Problem reported by Bruce Lilly in
+	<http://lists.gnu.org/archive/html/bug-bison/2003-02/msg00016.html>.
+	* data/lalr1.cc (yy::]b4_parser_class_name[::parse): Likewise.
+	* data/yacc.c (yy_reduce_print): Likewise.
+
+	* config/depcomp: Sync with Automake 1.7.3.
+
+2003-02-21  Akim Demaille  <akim@epita.fr>
+
+	* data/lalr1.cc: Use temporary variables instead of casts to
+	change integer types.
+	Suggested by Paul Eggert.
+
+2003-02-21  Akim Demaille  <akim@epita.fr>
+
+	* doc/bison.texinfo: Use "location" consistently to refer to @n,
+	to avoid confusions with lalr1.cc's notion of Position.
+	Suggested by Paul Eggert.
+
+2003-02-20  Akim Demaille  <akim@epita.fr>
+
+	* data/lalr1.cc (position.hh): Make sure "columns" never pushes
+	before initial_columns.
+	(location.hh): Use consistent variable names when defining the
+	operator<<.
+	Use "last" so that we subtract from Positions, not from unsigned.
+
+2003-02-20  Akim Demaille  <akim@epita.fr>
+
+	* data/lalr1.cc (position.hh): New subfile, including the extended
+	and Doxygen'ed documentation of class Position.
+	(location.hh): Use it.
+	Document a` la Doxygen.
+	With the help of Benoit Perrot.
+
+2003-02-20  Akim Demaille  <akim@epita.fr>
+
+	* tests/calc.at (AT_CHECK_PUSHDEFS, AT_CHECK_POPDEFS): Define
+	AT_YACC_IF.
+	Redefine AT_YYERROR_SEES_LOC_IF using it.
+	(_AT_DATA_CALC_Y): Don't declare yyerror when lalr1.cc, as it is
+	not defined.
+	Don't use the location in yy::Parser::error_ and
+	yy::Parser::print_ when not %locations.
+	Activate more lalr1.cc tests.
+
+2003-02-19  Akim Demaille  <akim@epita.fr>
+
+	* data/lalr1.cc: When displaying a line number, be sure to make it
+	an int.
+
+2003-02-19  Akim Demaille  <akim@epita.fr>
+
+	* data/lalr1.cc (b4_stack_depth_init, yy::Parser::initdepth_):
+	Remove, useless.
+	(YYABORT, YYACCEPT, YYERROR): New.
+	* tests/calc.at: Renable the lalr1.cc test.
+
+2003-02-19  Akim Demaille  <akim@epita.fr>
+
+	* tests/calc.at (AT_CHECK_CALC): Check different scenarios of
+	error recovery, mixing with/without pops and discarding of the
+	lookahead.
+	Exercise YYERROR.
+	Disable the lalr1.cc tests as currently it doesn't support YYERROR.
+
+2003-02-17  Paul Eggert  <eggert@twinsun.com>
+
+	* tests/atlocal.in (LDFLAGS, LIBS): New vars.
+	* tests/testsuite.at (AT_COMPILE): Use them.
+	This fixes the testsuite problem reported by Robert Lentz in
+	<http://lists.gnu.org/archive/html/bug-bison/2003-02/msg00011.html>.
+
+2003-02-12  Paul Eggert  <eggert@twinsun.com>
+
+	* data/yacc.c (yyerrlab) [YYERROR_VERBOSE]:
+	Avoid subscript error in yycheck.  Bug reported by Andrew Suffield in
+	<http://lists.gnu.org/archive/html/bug-bison/2003-02/msg00003.html>.
+	* data/glr.c (yyreportSyntaxError) [YYERROR_VERBOSE]: Likewise.
+	Check for malloc failure, for consistency with yacc.c.
+	(yytname_size): Remove, for consistency with yacc.c.
+
+	The bug still remains in data/lalr1.cc, as I didn't have time
+	to fix it there.
+
+2003-02-06  Akim Demaille  <akim@epita.fr>
+
+	* configure.ac (GXX): Rename as...
+	(CXX): this, to keep the original Autoconf semantics.
+	Require 2.57.
+	* data/lalr1.cc: Fix b4_copyright invocations.
+	If YYDEBUG is not defined, don't depend upon name_ being defined.
+	(location.hh): Include string and iostream.
+	(Position::filename): New member.
+	(Position::Position ()): New.
+	(operator<< (Position)): New.
+	(operator- (Position, int)): New.
+	(Location::first, Location::last): Rename as...
+	(Location::begin, Location::end): these, to mock the conventional
+	iterator names.
+	(operator<< (Location)): New.
+	* tests/atlocal.in (CXX): New.
+	* tests/testsuite.at (AT_COMPILE_CXX): New.
+	* tests/calc.at (_AT_DATA_CALC_Y): Adjust yyerror to report the
+	locations in a more synthetic way.
+	(AT_CHECK_PUSHDEFS): AT_YYERROR_SEES_LOC_IF is positive if
+	lalr1.cc is used.
+	Adjust the C locations to match those from Emacs: first column is
+	column 0.
+	Change all the expected results.
+	Conform to the GCS: simplify the locations when applicable.
+	(LOC, VAL, YYLLOC_FORMAL, YYLLOC_ARG, USE_YYLLOC, LEX_FORMALS)
+	(LEX_ARGS, USE_LEX_ARGS, LEX_PRE_FORMALS, LEX_PRE_ARGS): Replace
+	these CPP macros with the m4 macros new defined by...
+	(AT_CHECK_PUSHDEFS): this, i.e.:
+	(AT_LALR1_CC_IF, AT_PURE_LEX_IF, AT_LOC, AT_VAL, AT_LEX_FORMALS)
+	(AT_LEX_ARGS, AT_USE_LEX_ARGS, AT_LEX_PRE_FORMALS, AT_LEX_PRE_ARGS)
+	New macros.
+	(AT_CHECK_POPDEFS): Undefine them.
+	(AT_CHECK_CALC_LALR1_CC): New.
+	Use it for the first lalr1.cc test.
+
+2003-02-04  Akim Demaille  <akim@epita.fr>
+
+	* data/lalr1.cc (YYLLOC_DEFAULT): Fix its definition: be based on
+	Location as is defined.
+
+2003-02-04  Akim Demaille  <akim@epita.fr>
+
+	* data/lalr1.cc: If YYDEBUG is not defined, don't depend upon
+	name_ being defined.
+
+2003-02-03  Paul Eggert  <eggert@twinsun.com>
+
+	* src/gram.h (start_symbol): Remove unused decl.
+
+	Use more-consistent naming conventions for local vars.
+
+	* src/derives.c (derives_compute): Change type of local var from
+	int to rule_number.
+	* src/gram.c (grammar_rules_partial_print): Likewise.
+	* src/print.c (print_core): Likewise.
+	* src/reduce.c (reduce_grammar_tables): Likewise.
+
+	* src/gram.c (grammar_dump): Change name of item_number *
+	local var from r to rp.
+	* src/nullable.c (nullable_compute): Likewise.
+
+	* src/gram.h (ISTOKEN, ISVAR): Use i, not s, for int var.
+
+	* src/gram.h (symbol_number_as_item_number): Use sym, not s,
+	for symbol or symbol_number var.
+	* src/reader.c (grammar_start_symbol_set): Likewise.
+	* src/reader.h (grammar_start_symbol_set, grammar_symbol_append):
+	Likewise.
+	* src/state.c (transitions_to): Likewise.
+	* src/state.h: Likewise.
+	* src/tables.c (symbol_number_to_vector_number): Likewise.
+
+	* src/muscle_tab.h (MUSCLE_OBSTACK_SGROW): Use p, not s, for
+	char * var.
+
+	* src/parse-gram.y (lloc_default): Use loc, not r, for YYLTYPE
+	var.
+
+	* src/scan-gram.l (no_cr_read): Use bytes_read, not s, for size
+	var.
+
+	* src/system.h (xstrndup, strchr, strspn, strnlen, memchr, memrchr):
+	Use str, not s, for char * var.  Use ch, not c, for character var.
+	Use size for size var.
+
+	* src/uniqstr.c (uniqstr_new, uniqstr_assert): Use str, not s, for
+	char * var.
+	(uniqstr_print, uniqst_print_processor): Use ustr, not s, for
+	uniqstr var.
+	* src/uniqstr.h: Likewise.
+
+	* src/vcg.c (get_color_str, get_textmode_str, get_shape_str,
+	get_layoutalgorithm_str, get_decision_str, get_orientation_str,
+	get_node_alignment_str, get_arrow_mode_str, get_crossing_type_str,
+	get_view_str, get_linestyle_str, get_arrowstyle_str): Rename
+	param to have same name as that of enum, so that we don't use
+	"s" to stand for a non-state.
+
+2003-02-02  Akim Demaille  <akim@epita.fr>
+
+	* src/scan-skel.l: Scan more than one inert character per yylex
+	invocation.
+
+2003-02-01  Paul Eggert  <eggert@twinsun.com>
+
+	Version 1.875a.
+
+	* po/LINGUAS: Add ms.
+
+2003-01-30  Akim Demaille  <akim@epita.fr>
+
+	* doc/Makefile.am (CLEANFILES): Add bison.fns for distcheck.
+
+2003-01-29  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>
+
+	* tests/cxx-type.at: Correct apparent typo in Bison input: $$ instead
+	of $1.
+
+	Changes in response to error report by S. Eken: GLR mode does not
+	handle negative $ indices or $ indices in embedded rules correctly.
+	See <http://lists.gnu.org/archive/html/bug-bison/2003-01/msg00076.html>.
+
+	* data/glr.c (b4_rhs_value): Change to use YYFILL macro.
+	(b4_rhs_location): Ditto.
+	(yyfill): New function to copy from stack tree into array
+	incrementally.
+	(yyuserAction): Modify to allow incremental move of semantic values
+	to rhs array when in GLR mode.
+	Define YYFILL to use in user-defined actions to fill semantic array
+	as needed.
+	Remove dummy use of yystack, as there is now a guaranteed use.
+	(yydoAction): Modify to allow incremental move of semantic values
+	to rhs array when in GLR mode.
+	(yyresolveAction): Ditto.
+	(yyglrShiftDefer): Update comment.
+	(yyresolveStates): Use X == NULL for pointers, not !X.
+	(yyglrReduce): Ditto.
+	(yydoAction): Ditto
+
+	* tests/glr-regr1.at: Rename to ...
+	* tests/glr-regression.at: Add new regression test for the problems
+	described above (adapted from S. Eken).
+	Update copyright notice.
+	* tests/testsuite.at: Rename glr-regr1.at to glr-regression.at.
+	* tests/Makefile.am: Ditto.
+
+2003-01-28  Paul Eggert  <eggert@twinsun.com>
+
+	* data/lalr1.cc: Do not use @output_header_name@ unless
+	b4_defines_flag is set.  This fixes two bugs reported by
+	Tim Van Holder in
+	<http://lists.gnu.org/archive/html/bug-bison/2003-01/msg00071.html>
+	and <http://lists.gnu.org/archive/html/bug-bison/2003-01/msg00073.html>.
+
+2003-01-21  Paul Eggert  <eggert@twinsun.com>
+
+	* data/yacc.c (YYERROR): Move code from yyerrlab1 to here, so that
+	we don't need to worry about yyerrlab1 being reported as an
+	"unused label" by non-GCC C compilers.  The downside is that if
+	locations are used then a couple of statements are duplicated each
+	time YYERROR is invoked, but the upside is that the warnings
+	should vanish.
+	(yyerrlab1): Move code to YERROR.
+	(yyerrlab2): Remove.  Change uses back to yyerrlab1.
+	This reverts some of the 2002-12-27 change.
+
+2003-01-17  Paul Eggert  <eggert@twinsun.com>
+
+	* src/output.c (symbol_printers_output): Fix typo that led
+	to core dump.  Problem reported by Antonio Rus in
+	<http://lists.gnu.org/archive/html/bug-bison/2003-01/msg00058.html>.
+
+2003-01-13  Akim Demaille  <akim@epita.fr>,
+		Quoc Peyrot <chojin@lrde.epita.fr>,
+		Robert Anisko <anisko_r@lrde.epita.fr>
+
+	* data/lalr1.cc (parse::yyerrlab1): When popping the stack, stop
+	when the stacks contain one element, as the loop would otherwise
+	free the last state, and then use the top state (the one we just
+	popped).  This means that the initial elements will not be freed
+	explicitly, as is the case in yacc.c; it is not a problem, as
+	these elements have fake values.
+
+2003-01-11  Paul Eggert  <eggert@twinsun.com>
+
+	* NEWS: %expect-violations are now just warnings, reverting
+	to Bison 1.30 and 1.75 behavior.  This fixes the GCC 3.2
+	bootstrapping problem reported by Matthias Klose; see
+	<http://lists.gnu.org/archive/html/bug-bison/2003-01/msg00053.html>.
+	* src/conflicts.c (conflicts_print): Likewise.
+	* tests/conflicts.at (%expect not enough, %expect too much,
+	%expect with reduce conflicts): Likewise.
+	* doc/bison.texinfo (Expect Decl): Document this.  Also mention
+	that the warning is enabled if the number of conflicts changes
+	(not necessarily increases).
+
+	* src/getargs.c (version): Update copyright year.
+
+2003-01-09  Akim Demaille  <akim@epita.fr>
+
+	* src/Makefile.am, lib/Makefile.am: Use $(VAR) instead of @VAR@.
+
+2003-01-08  Paul Eggert  <eggert@twinsun.com>
+
+	* Makefile.maint (WGETFLAGS):
+	New macro, containing "-C off" to disable proxy caches.
+	All uses of $(WGET) changed to $(WGET) $(WGETFLAGS).
+	(rel-check): Use $(WGET) instead of wget.
+
+2003-01-06  Paul Eggert  <eggert@twinsun.com>
+
+	* doc/bison.texinfo (Generalized LR Parsing): Add a reference to
+	the GLR paper of Scott, Johnstone and Hussain.
+
+2003-01-04  Paul Eggert  <eggert@twinsun.com>
+
+	* configure.ac (AC_ARG_ENABLE): Add --disable-yacc.
+	(YACC_SCRIPT, YACC_LIBRARY): New vars to AC_SUBST.
+	* lib/Makefile.am (lib_LIBRARIES): liby.a -> @YACC_LIBRARY@.
+	(EXTRA_LIBRARIES): New var, for liby.a.
+	* src/Makefile.am (bin_SCRIPTS): yacc -> @YACC_SCRIPT@.
+	(EXTRA_SCRIPTS): New var, for yacc.
+
+	* data/yacc.c (yyerrlab1): Omit attribute if __cplusplus is defined,
+	since GNU C++ (as of 3.2.1) does not allow attributes on labels.
+	Problem reported by Nelson H. F. Beebe.
+
+2003-01-03  Paul Eggert  <eggert@twinsun.com>
+
+	* lib/obstack.h (__INT_TO_PTR) [__STDC__]: Cast result to
+	(void *) to avoid diagnostic with native c89 on SGI IRIX 6.5
+	when compiling Bison 1.875's `bitset bset = obstack_alloc
+	(bobstack, bytes);'.  Problem reported by Nelson H. F. Beebe.
+
+	* src/scan-skel.l (QPUTS): Omit redundant `;' from macro definition.
+	([^@\n]): Renamed from [^@\n]+ so that the token buffer does not
+	grow to a huge size with typical invocation.
+
+	* lib/hash.c (_Bool, bool, false, true, __bool_true_false_are_defined):
+	Use the pattern recommended by Autoconf 2.57, except also protect
+	against double-definition.
+	* src/system.h: Likewise.
+	Portability issues reported by Nelson H. F. Beebe.
+
+	* data/glr.c (yybool): Renamed from bool, to avoid collisions in C.
+	All uses changed.  Provide a definition in both C and C++.
+	(yytrue, yyfalse): Define even if defined (__cplusplus).
+
+	* lib/bitset_stats.c (bitset_stats_list): Remove unused var.
+	Reported by Nelson H. F. Beebe.
+
+	* src/scan-skel.l ("@oline@"): Output lineno+1, not lineno.
+
+2003-01-02  Paul Eggert  <eggert@twinsun.com>
+
+	* data/yacc.c (yyerrlab1): Append `;' after attribute, to
+	pacify the buggy "smart preprocessor" in MacOS 10.2.3.
+	Bug reported by Nelson H. F. Beebe.
+
+2003-01-01  Paul Eggert  <eggert@twinsun.com>
+
+	* Version 1.875.
+
+2002-12-30  Paul Eggert  <eggert@twinsun.com>
+
+	* src/scan-gram.l (<INITIAL,SC_AFTER_IDENTIFIER,SC_PRE_CODE>","):
+	Moved here from...
+	(<INITIAL>","): Here.  This causes stray "," to be treated
+	more uniformly.
+
+	* src/scan-gram.l (<SC_BRACED_CODE>"}"): Output ";" before the
+	last brace in braced code when not in Yacc mode, for compatibility
+	with Bison 1.35.  This resurrects the 2001-12-15 patch to
+	src/reader.c.
+
+	* src/reader.h (YYDECL): Use YYSTYPE, not its deprecated alias
+	yystype.  This follows up the 2002-12-24 YYSTYPE bug fix.
+
+2002-12-28  Paul Eggert  <eggert@twinsun.com>
+
+	* src/symtab.c (symbol_make_alias): Set type of SYMVAL to be
+	that of SYM's type.  This fixes Debian bug 168069, reported by
+	Thomas Olsson.
+
+2002-12-28  Paul Eggert  <eggert@twinsun.com>
+
+	Version 1.75f.
+
+	Switch back to the Yacc style of conflict reports, undoing some
+	of the 2002-07-30 change.
+	* doc/bison.texinfo (Understanding): Use Yacc style for
+	conflict reports.  Also, use new way of locating rules.
+	* src/conflicts.c (conflict_report):
+	Renamed from conflict_report_yacc, removing the old
+	'conflict_report'.  Translate the entire conflict report at once,
+	so that we don't assume that "," has the same interpretation in
+	all languages.
+	(conflicts_output): Use Yacc-style conflict report for each state,
+	instead of our more-complicated style.
+	(conflicts_print): Use Yacc-style conflict report, except print
+	the input file name when not emulating Yacc.
+	* tests/conflicts.at (Unresolved SR Conflicts, Defaulted
+	Conflicted Reduction, %expect not enough, %expect too much,
+	%expect with reduce conflicts): Switch to Yacc-style conflict reports.
+	* tests/existing.at (GNU Cim Grammar): Likewise.
+	* tests/glr-regr1.at (Badly Collapsed GLR States): Likewise.
+
+	* src/complain.c (warn_at, warn, complain_at, complain, fatal_at,
+	fatal): Don't invoke fflush; it's not needed and it might even be
+	harmful for stdout, as stdout might not be open.
+	* src/reduce.c (reduce_print): Likewise.
+
+2002-12-27  Paul Eggert  <eggert@twinsun.com>
+
+	Fix a bug where error locations were not being recorded correctly.
+	This problem was originally reported by Paul Hilfinger in
+	<http://lists.gnu.org/archive/html/bug-bison/2002-11/msg00086.html>.
+
+	* data/yacc.c (yyparse): New local var yylerrsp, to record the
+	top of the location stack's error locations.
+	(yyerrlab): Set it.  When discarding a token, push its location
+	onto yylerrsp so that we don't lose track of the error's end.
+	(yyerrlab1): Now is only the target of YYERROR, so that we can
+	properly record the location of the action that failed.  For GCC
+	2.93 and later, insert an __attribute__ ((__unused__)) to avoid
+	GCC warning about yyerrlab1 being unused if YYERROR is unused.
+	(yyerrlab2): New label, which yyerrlab now falls through to.
+	Compute the error's location by applying YYLLOC_DEFAULT to
+	the locations of all the symbols that went into the error.
+	* doc/bison.texinfo (Location Default Action): Mention that
+	YYLLOC_DEFAULT is also invoked for syntax errors.
+	* tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR):
+	Error locations include the locations of all the tokens that were
+	discarded, not just the last token.
+
+2002-12-26  Paul Eggert  <eggert@twinsun.com>
+
+	* src/files.c: Include quote.h.
+	(compute_output_file_names): Warn if we detect conflicting
+	outputs to the same file.  This should catch the misunderstanding
+	exemplified by Debian Bug 165349, reported by Bruce Stephens..
+
+	* src/conflicts.c (conflicts_print): If the user specifies
+	"%expect N", report an error if there are any reduce/reduce
+	conflicts.  This is what the manual says should happen.
+	This fixes Debian bug 130890, reported by Anthony DeRobertis.
+	* tests/conflicts.at (%expect with reduce conflicts): New test.
+
+	Don't use m4_include on relative file names, as it doesn't work as
+	desired if there happens to be a file with that name under ".".
+
+	* m4sugar/version.m4: Remove; it was included but it wasn't used.
+	* data/Makefile.am (dist_m4sugar_DATA): Remove m4sugar/version.m4.
+	* data/m4sugar/m4sugar.m4: Don't include m4sugar/version.m4.
+	* data/glr.c, data/lalr1.cc, data/yacc.c: Don't include c.m4.
+	* src/output.c (output_skeleton): Use full path names when
+	specifying a file to include; don't rely on include path, as
+	it's unreliable when the working file contains a file with
+	that name.
+
+2002-12-25  Paul Eggert  <eggert@twinsun.com>
+
+	Remove obsolete references to bison.simple and bison.hairy.
+	Problem mentioned by Aubin Mahe in
+	<http://lists.gnu.org/archive/html/help-bison/2002-12/msg00010.html>.
+	* data/glr.c: Comment fix.
+	* doc/bison.1: Remove references.  Also, mention "yacc".
+
+	* src/getargs.c (getargs) [MSDOS]: Don't assume optarg != NULL
+	with -g option.
+
+	* src/parse-gram.y (declaration): Use enum "report_states" rather
+	than its numeric value 1.
+
+	* src/scan-skel.l ("@output ".*\n): Close any old yyout before
+	opening a new one.  This fixes Debian bug 165349, reported by
+	Bruce Stephens.
+
+2002-12-24  Paul Eggert  <eggert@twinsun.com>
+
+	Version 1.75e.
+
+	* Makefile.maint (cvs-update): Don't assume that the shell
+	supports $(...), as Solaris sh doesn't.
+
+	* src/parse-gram.y (lloc_default): Remove test for empty
+	nonterminals at the end, since it didn't change the result.
+
+2002-12-24  Paul Eggert  <eggert@twinsun.com>
+
+	If the user does not define YYSTYPE as a macro, Bison now declares it
+	using typedef instead of defining it as a macro.  POSIX requires this.
+	For consistency, YYLTYPE is also declared instead of defined.
+
+	%union directives can now have a tag before the `{', e.g., the
+	directive `%union foo {...}' now generates the C code
+	`typedef union foo { ... } YYSTYPE;'; this is for Yacc compatibility.
+	The default union tag is `YYSTYPE', for compatibility with Solaris 9
+	Yacc.  For consistency, YYLTYPE's struct tag is now `YYLTYPE'
+	instead of `yyltype'.
+
+	`yystype' and `yyltype' are now obsolescent macros instead of being
+	typedefs or tags; they are no longer documented and will be
+	withdrawn in a future release.
+
+	* data/glr.c (b4_location_type): Remove.
+	(YYSTYPE): Renamed from yystype.
+	(YYSTYPE_IS_DECLARED): New macro, used to prevent double-typedef.
+	(struct YYLTYPE): Renamed from struct yyltype.
+	(YYLTYPE): Renamed from yyltype.
+	(yyltype, yystype): New (and obsolescent) macros,
+	for backward compatibility.
+	* data/yacc.c: Likewise.
+
+	* data/yacc.c (YYSTYPE): Declare as union YYSTYPE if the user
+	does not specify a union tag.  This is for compatibility with
+	Solaris 9 yacc.
+
+	* src/parse-gram.y (add_param): 2nd arg is now char * not char
+	const *, since it is now modified by stripping surrounding { }.
+	(current_braced_code): Remove.
+	(PERCENT_DESTRUCTOR, PERCENT_PRINTER, PERCENT_UNION,
+	PERCENT_LEX_PARAM, PERCENT_PARSE_PARAM): Change names to include
+	trailing " {...}".  Now of type <chars>.
+	(grammar_declaration): Adjust to bundled tokens.
+	(code_content): Remove; stripping is now done by add_param.
+	(print_token_value): Print contents of bundled tokens.
+	(token_name): New function.
+
+	* src/reader.h (braced_code, current_braced_code): Remove.
+	(token_name): New decl.
+
+	* src/scan-gram.l (handle_dollar, handle_at): Now takes int
+	token_type, not braced_code code_kind.  All uses changed.
+	(SC_PRE_CODE): New state, for scanning after a keyword that
+	has (or usually has) an immediately-following braced code.
+	(token_type): New local var, to keep track of which token type
+	to return when scanning braced code.
+	(<INITIAL>"%destructor", <INITIAL>"%lex-param",
+	<INITIAL>"%parse-param", <INITIAL>"%printer",
+	<INITIAL>"%union"): Set token type and BEGIN SC_PRE_CODE
+	instead of returning a token type immediately.
+	(<INITIAL>"{"): Set token type.
+	(<SC_BRACED_CODE>"}"): Use it.
+	(handle_action_dollar, handle_action_at): Now returns bool
+	indicating success.  Fail if ! current_rule; this prevents a core dump.
+	(handle_symbol_code_dollar, handle_symbol_code_at):
+	Remove; merge body into caller.
+	(handle_dollar, handle_at): Complain in invalid contexts.
+
+	* NEWS, doc/bison.texinfo: Document the above.
+	* NEWS: Fix years and program names in copyright notice.
+
+2002-12-17  Paul Eggert  <eggert@twinsun.com>
+
+	* NEWS, doc/bison.texinfo (Parser Function, Pure Calling, Error
+	Reporting, Table of Symbols): Omit mentions of %lex-param and
+	%parse-param from the documentation for now.
+
+2002-12-15  Paul Eggert  <eggert@twinsun.com>
+
+	Undo most of the 2002-11-12 yychar -> yytoken patch, as it broke
+	GCC 3.2.1 (which depends on yychar == YYEMPTY when there is no
+	lookahead symbol, and which sets yychar in parser actions) and it
+	disagreed with the Bison documentation.  Bug
+	reported by Andrew Walrond.
+
+	* data/yacc.c (YYTRANSLATE): Don't check for negative argument,
+	as the caller now does that.
+	(yyclearin, YYBACKUP, yyparse): Use yychar, not yytoken.
+	(YYEMPTY): Parenthesize right hand side, since others use it.
+	(yyparse): Don't assume that our generated code is the only code
+	that sets yychar.
+
+2002-12-13  Paul Eggert  <eggert@twinsun.com>
+
+	Version 1.75d.
+
+	POSIX requires a "yacc" command.
+	* src/Makefile.am (bin_SCRIPTS): New macro, for yacc.
+	(MOSTLYCLEANFILES): Add yacc.
+	(yacc): New rule.
+	* doc/bison.texinfo (Invocation, Bison Options): Mention yacc
+	as an alias for bison y.
+
+	* po/LINGUAS: Add da.
+
+	* src/getargs.c (__GNU_LIBRARY__) [lint]: Define to work around
+	problem with latest <getopt.h>.
+	(HACK_FOR___GNU_LIBRARY___PROTOTYPE): New macro.
+
+	* doc/fdl.texi: Upgrade to 1.2.
+	* lib/alloca.c, lib/error.c, lib/getopt.c, lib/getopt.h
+	lib/getopt1.c, lib/gettext.h, lib/memrchr.c, lib/obstack.c,
+	lib/obstack.h, lib/strnlen.c, lib/unlocked-io.h: Sync with
+	gnulib.
+	* config/install-sh: Sync with autotools.
+
+	Fix a bad interaction with flex 2.5.23 reported by Bruce Lilly in
+	<http://lists.gnu.org/archive/html/bug-bison/2002-11/msg00114.html>.
+	* data/yacc.c (YYLTYPE, struct yyltype): Do not define unless
+	locations are requested.
+	(union yyalloc): Do not depend on YYLTYPE_IS_TRIVIAL unless
+	locations are requested.
+
+2002-12-12  Paul Eggert  <eggert@twinsun.com>
+
+	Remove unportable casts and storage allocation tricks.
+	While we're at it, remove almost all casts, since they
+	usually aren't needed and are a sign of trouble.
+
+	* configure.ac (AC_CHECK_TYPES): Check for uintptr_t.
+
+	* src/derives.c (derives_compute): Do not subtract NTOKENS from
+	the pointer DSET returned by malloc; this isn't portable.
+	Instead, always use DSET[i - NTOKENS] rather than DSET[i].
+	Similarly for DERIVES.
+	* src/lalr.c (set_goto_map): Likewise, for GOTO_MAP and TEMP_MAP.
+	* src/nullable.c (nullable_compute): Likewise, for RSETS and NULLABLE.
+	* src/reduce.c (reduce_grammar_tables): Likewise, for nontermmap
+
+	* src/derives.c (derives_compute): Do not bother invoking
+	int_of_rule_number, since rule numbers are integers.
+
+	* src/files.c (concat2, tr, compute_base_name): Use xmalloc (N)
+	rather than XMALLOC (char, N).
+
+	* src/files.c (filename_split): Rewrite to avoid cast.
+
+	* src/gram.h (symbol_number_as_item_number,
+	item_number_as_symbol_number, rule_number_as_item_number,
+	item_number_as_rule_number):
+	Now inline functions rather than macros, to avoid casts.
+	* src/state.h (state_number_as_int): Likewise.
+	* src/tables.c (state_number_to_vector_number,
+	symbol_number_to_vector_number): Likewise.
+
+	* src/gram.h (int_of_rule_number): Remove; no longer used.
+
+	* src/lalr.c (add_lookback_edge): Use malloc rather than calloc,
+	since the resulting storage is always stored into.
+
+	* src/main.c (alloca) [C_ALLOCA]: Add decl here, the only place
+	where it's needed.
+
+	* src/muscle_tab.c (muscle_m4_output):
+	Now inline.  Return bool, not int.
+	* src/state.c (state_compare): Likewise.
+	* src/symtab.c (symbol_check_defined,
+	symbol_check_alias_consistency, symbol_pack, symbol_translation,
+	hash_compare_symbol, hash_symbol):
+	Likewise.
+	* src/uniqstr.c (uniqstr_print): Likewise.
+	* src/muscle_tab.c (muscle_m4_output_processor):
+	New function, to avoid casts.
+	* src/state.c (state_comparator, stage_hasher): Likewise.
+	* src/symtab.c (symbol_check_defined_processor,
+	symbol_check_alias_consistency_processor, symbol_pack_processor,
+	symbol_translation_processor, hash_symbol_comparator,
+	hash_symbol_hasher): Likewise.
+	* src/uniqstr.c (uniqstr_print_processor): Likewise.
+	* src/muscle_tab.c (muscles_m4_output):
+	Use new functions instead of casting old functions unportably.
+	* src/state.c (state_hash_new): Likewise.
+	* src/symtab.c (symbols_new, symbols_do, symbols_check_defined,
+	symbols_token_translations_init):
+	Likewise.
+	* src/uniqstr.c (uniqstrs_new, hash_initialize, uniqstrs_do): Likewise.
+
+	* src/output.c (GENERATE_MUSCLE_INSERT_TABLE): Use long local
+	var instead of casting to long, to avoid casts.
+	(prepare_states): Use MALLOC rather than alloca, so that we don't
+	have to worry about alloca.
+	* src/state.c (state_hash_lookup): Likewise.
+
+	* src/scan-gram.l (<SC_ESCAPED_CHARACTER>"'"): Use unsigned char
+	local var instead of casting to unsigned char, to avoid casts.
+
+	* src/state.c (TRANSITIONS_ALLOC, ERRS_ALLOC, REDUCTIONS_ALLOC,
+	STATE_ALLOC): Remove.
+	(transitions_new, errs_new, reductions_new, state_new): Use malloc
+	rather than calloc, and use offsetof to avoid allocating slightly
+	too much storage.
+	(state_new): Initialize all members.
+
+	* src/state.c (state_hash): Use unsigned accumulator, not signed.
+
+	* src/symtab.c (symbol_free): Remove; unused.
+	(symbol_get): Remove cast in lhs of assignment.
+	(symbols_do): Now static.  Accept generic arguments, not
+	hashing-related ones.
+
+	* src/symtab.h: (NUMBER_UNDEFINED): Remove unnecessary cast.
+	(symbol_processor): Remove.
+	(symbols_do): Remove decl; now static.
+
+	* src/system.h (alloca): Remove; decl no longer needed.
+	(<stddef.h>): Include, for offsetof.
+	(<inttypes.>, <stdint.h>): Include if available.
+	(uintptr_t): New type, if system lacks it.
+	(CALLOC, MALLOC, REALLOC): New macros.
+	All uses of XCALLOC, XMALLOC, and XREALLOC changed to use these
+	new macros.
+
+	* src/tables.c (table_size): Now int, to pacify GCC.
+	(table_grow, table_ninf_remap): Use signed table size.
+	(save_row): Don't bother initializing locals when not needed.
+	(default_goto, goto_actions, pack_vector): Remove unnecessary casts.
+	* src/uniqstr.c (hash_compare_uniqstr):  Likewise.
+
+	* src/vcg.h: Correct misspellings.
+
+	* src/vcg_defaults.h (G_CMAX): Now INT_MAX.
+
+
+	* src/getargs.c (getargs): Don't assume EOF == -1.
+
+2002-12-09  Paul Eggert  <eggert@twinsun.com>
+
+	Change identifier spellings to avoid collisions with names
+	that are reserved by POSIX.
+
+	Don't use names ending in _t, since POSIX reserves them.
+	For consistency, remove _e and _s endings -- they're weren't
+	needed to remove ambiguity.  All uses changed.
+	* src/uniqstr.h (uniqstr): Renamed from uniqstr_t, which in
+	turn was just renamed from struniq_t.
+	* src/uniqstr.c (uniqstr_processor): Renamed from struniq_processor,
+	which in turn was just renamed from struniq_processor_t.
+	(hash_compare_uniqstr): Renamed from hash_compare_struniq, which
+	in turn was renamed from hash_compare_struniq_t.
+	* src/LR0.c (struct state_list): Renamed from struct state_list_s.
+	(state_list): Renamed from state_list_t.
+	* src/assoc.h (assoc): Renamed from assoc_t.
+	* src/conflicts.c (enum conflict_resolution): Renamed from
+	enum conflict_resolution_e.
+	* src/derives.c (struct rule_list): Renamed from struct rule_list_s.
+	(rule_list): Renamed from rule_list_t.
+	* src/getargs.h (enum trace): Renamed from enum trace_e.
+	(enum report): Renamed from enum report_e.
+	* src/gram.h (item_number): Renamed from item_number_t.
+	(rule_number): Renamed from rule_number_t.
+	(struct rule_s): Remove the "rule_s" part; not used.
+	(rule): Renamed from rule_t.
+	(rule_filter): Renamed from rule_filter_t.
+	* src/lalr.c (struct goto_list): Renamed from struct goto_list_s.
+	(goto_list): Renamed from goto_list_t.
+	* src/lalr.h (goto_number): Renamed from goto_number_t.
+	* src/location.h (location): Renamed from location_t.
+	* src/muscle_tab.c (muscle_entry): Renamed from muscle_entry_t,
+	and moved here from:
+	* src/muscle_tab.h (muscle_entry_t): here.
+	* src/nullable.c (struct rule_list): Renamed from struct rule_list_s.
+	(rule_list): Renamed from rule_list_t.
+	* src/print_graph.c (static_graph): Renamed from graph.
+	* src/reader.h (braced_code): Renamed from braced_code_t.
+	Remove brace_code_e tag.
+	* src/relation.h (relation_node): Renamed from relation_node_t.
+	(relation_nodes): Renamed from relation_nodes_t.
+	(relation): Renamed from relation_t.
+	* src/state.h (state_number): Renamed from state_number_t.
+	(struct state): Renamed from struct state_s.
+	(state): Renamed from state_t.
+	(transitions): Renamed from transitions_t.  Unused (and
+	misspelled) transtion_s tag removed.
+	(errs): Renamed from errs_t.  Unused errs_s tag removed.
+	(reductions): Renamed from reductions_t.  Unused tag
+	reductions_s removed.
+	* src/symlist.h (symbol_list): Renamed from symbol_list_t.
+	(struct symbol_list): Renamed from struct symbol_list_s.
+	* src/symtab.h (symbol_number): Renamed from symbol_number_t.
+	(struct symbol): Renamed from struct symbol_s.
+	(symbol): Renamed from symbol_t.
+	* src/tables.c (vector_number): Renamed from vector_number_t.
+	(action_number): Renamed from action_t.
+	* src/tables.h (base_number): Renamed from base_t.
+	* src/vcg.h (enum color): Renamed from enum color_e.
+	(enum textmode): Renamed from enum textmode_e.
+	(enum shape): Renamed from enum shape_e.
+	(struct colorentry): Renamed from struct colorentry_s.
+	(struct classname): Renamed from struct classname_s.
+	(struct infoname): Renamed from struct infoname_s.
+	(enum layoutalgorithm): Renamed from enum layoutalgorithm_e.
+	(enum decision): Renamed from enum decision_e.
+	(enum orientation): Renamed from enum orientation_e.
+	(enum alignment): Renamed from enum alignment_e.
+	(enum arrow_mode): Renamed from enum arrow_mode_e.
+	(enum crossing_type): Renamed from enum crossing_type_e.
+	(enum view): Renamed from enum view_e.
+	(struct node): Renamed from struct node_s.
+	(node): Renamed from node_t.
+	(enum linestyle): Renamed from enum linestyle_e.
+	(enum arrowstyle): Renamed from enum arrowstyle_e.
+	(struct edge): Renamed from struct edge.
+	(edge): Renamed from edge_t.
+	(struct graph): Renamed from struct graph_s.
+	(graph): Renamed from graph_t.
+	* tests/calc.at (_AT_DATA_CALC_Y, Simple LALR Calculator):
+	Rename value_t -> value.
+	* tests/input.at (Torturing the Scanner): Rename value_t -> value,
+	value_t_as_yystype -> value_as_yystype.
+
+	Don't include <errno.h> in the mainstream code, since it
+	reserves E[A-Z0-9]* and we want to use symbols like 'EQUALS'.
+	* lib/get-errno.c, lib/get-errno.h: New files.
+	* lib/Makefile.am (libbison_a_SOURCES): Add get-errno.h,
+	get-errno.c.
+	* src/files.c (xfopen, xfclose): Use get_errno instead of errno.
+	* src/output.c (output_skeleton): Likewise.
+	* src/scan-gram.l (<INITIAL>{int}): Use set_errno and get_errno
+	instead of errno.
+	(<SC_ESCAPED_STRING,SC_ESCAPED_CHARACTER>\\x[0-9abcdefABCDEF]+):
+	Likewise.
+	(handle_action_dollar, handle_action_at): Likewise.
+	* src/system.h: Do not include <errno.h>.
+	(TAB_EXT): Renamed from EXT_TAB.
+	(OUTPUT_EXT): Renamed from EXT_OUTPUT.
+
+	Avoid str[a-z]*, since <string.h> reserves that name space.
+	Change all instances of "struniq" in names to "uniqstr", and
+	likewise for "STRUNIQ" and "UNIQSTR".
+	* src/uniqstr.c: Renamed from src/struniq.c.
+	* src/uniqstr.h: Renamed from src/struniq.h.
+	* src/Makefile.am (bison_SOURCES): Adjust to these renamings.
+	* src/files.c (strsuffix): Remove; unused.
+	(concat2): Renamed from stringappend.  Now static.
+	* src/files.h (strsuffix, stringappend): Remove; unused.
+	* src/parse-gram.y (<chars>): Renamed from <string>.
+	(<uniqstr>): Renamed from <struniq>.
+	* src/scan-gram.l (obstack_for_string): Renamed from string_obstack.
+	* src/vcg.h (struct node_s.expand): Renamed from struct node_s.stretch.
+	(struct graph_s.expand): Renamed from struct graph_s.stretch.
+	* src/vcg_defaults.h (G_EXPAND): Renamed from G_STRETCH.
+	(G_LONG_STRAIGHT_PHASE): Renamed from G_STRAIGHT_PHASE.
+	(N_EXPAND): Renamed from N_STRETCH.
+
+	Avoid *_MAX and *_MIN, since <limits.h> reserves that name space.
+	* data/yacc.c (YYSTACK_GAP_MAXIMUM): Renamed from YYSTACK_GAP_MAX.
+	* src/gram.h (ITEM_NUMBER_MAX, ITEM_NUMBER_MIN, RULE_NUMBER_MAX):
+	Remove; unused.
+	* src/lalr.h (GOTO_NUMBER_MAXIMUM): Renamed from GOTO_NUMBER_MAX.
+	* src/state.h (STATE_NUMBER_MAXIMUM): Renamed from STATE_NUMBER_MAX.
+	* src/symtab.h (SYMBOL_NUMBER_MAXIMUM): Renamed from SYMBOL_NUMBER_MAX.
+	* src/tables.c (VECTOR_NUMBER_MAX, VECTOR_NUMBER_MIN): Remove; unused.
+	(BASE_MAXIMUM): Renamed from BASE_MAX.
+	(BASE_MINIMUM): Renamed from BASE_MIN.
+	(ACTION_MAX): Remove; unused.
+	(ACTION_NUMBER_MINIMUM): Renamed from ACTION_MIN.
+	Unnecessary casts removed from above defines.
+
+
+	Fix misspelling in names.
+	* src/vcg.h (enum_alignment_e): Renamed from enum_alignement_e.
+	* src/vcg_defaults.h (G_NODE_ALIGNMENT): Renamed from
+	G_NODE_ALIGNEMENT.
+
+
+	* lib/timevar.c (timevar_report): Renamed from time_report,
+	for consistency with other names.
+	* lib/timevar.h (timevar_report): New decl.
+	* src/system.h (time_report): Remove; decl is now in lib/timevar.h.
+
+
+	Sort include-file uses.
+
+	Reorder all include files under src to be in the order "system.h".
+	then the ../lib include files in angle brackets (alphabetized),
+	then the . include files in double-quotes (alphabetized).  Fix
+	dependency breakages encountered in this process, as follows:
+	* src/closure.h, src/derives.h, src/state.h: Include "gram.h".
+	* src/complain.c: Don't include stdlib.h, string.h _LIBC stuff.
+	* src/state.h: Include "symtab.h".
+
+2002-12-08  Paul Eggert  <eggert@twinsun.com>
+
+	* data/glr.c, data/lalr1.cc, data/yacc.c: Do not use __file__,
+	since this causes problems when __file__ contains character
+	sequences like "@" that are treated specially by src/scan-skel.l.
+	Instead, just use the file's basename.  This fixes the bug
+	reported by Martin Mokrejs in
+	<http://lists.gnu.org/archive/html/bug-bison/2002-12/msg00007.html>.
+
+2002-12-06  Paul Eggert  <eggert@twinsun.com>
+
+	Add support for rules that do not have trailing semicolons, as
+	POSIX requires.  Improve the quality of locations in Bison
+	diagnostics.
+
+	* src/location.c: Include <quotearg.h>.
+	(empty_location): Now const.
+	(location_print): New function.  Follow the recommendation of the
+	GNU Coding Standards for locations that span file boundaries.
+	* src/location.h: Do not include <quotearg.h>; no longer needed.
+	(boundary): New type.
+	(location_t): Use it.  This allows locations to span file boundaries.
+	All member uses changed: file -> start.file or end.file (as needed),
+	first_line -> start.line, first_column -> start.column,
+	last_line -> end.line, last_column -> end.column.
+	(equal_boundaries): New function.
+	(LOCATION_RESET, LOCATION_STEP): Remove.
+	(LOCATION_PRINT): Remove.  All callers changed to use location_print.
+	(empty_location): Now const.
+	(location_print): New decl.
+	* src/parse-gram.y (lloc_default): New function, which handles
+	empty locations more accurately.
+	(YYLLOC_DEFAULT): Use it.
+	(%token COLON): Remove.
+	(%token ID_COLON): New token.
+	(rules): Use it.
+	(declarations, rules): Remove trailing semicolon.
+	(declaration, rules_or_grammar_declaration):
+	Allow empty (";") declaration.
+	(symbol_def): Remove empty actions; no longer needed.
+	(rules_or_grammar_declaration): Remove trailing semicolon.
+	(semi_colon.opt): Remove.
+	* src/reader.h: Include location.h.
+	(scanner_cursor): New decl.
+	* src/reduce.c (nonterminals_reduce): Use warn_at rather than
+	rolling our own.
+	* src/scan-gram.l (YY_USER_INIT): Initialize scanner_cursor instead
+	of *loc.
+	(STEP): Remove.  No longer needed, now that adjust_location does
+	the work.  All uses removed.
+	(scanner_cursor): New var.
+	(adjust_location): Renamed from extend_location.  It now sets
+	*loc and adjusts the scanner cursor.  All uses changed.
+	Don't bother testing for CR.
+	(handle_syncline): Remove location arg; now updates scanner cursor.
+	All callers changed.
+	(unexpected_end_of_file): Now accepts start boundary of token or
+	comment, not location.  All callers changed.  Update scanner cursor,
+	not the location.
+	(SC_AFTER_IDENTIFIER): New state.
+	(context_state): Renamed from c_context.  All uses changed.
+	(id_loc, code_start, token_start): New local vars.
+	(<INITIAL,SC_AFTER_IDENTIFIER>): New initial context.  Move all
+	processing of Yacc white space and equivalents here.
+	(<INITIAL>{id}): Save id_loc.  Begin state SC_AFTER_IDENTIFIER
+	instead of returning ID immediately, since we need to search for
+	a subsequent colon.
+	(<INITIAL>"'", "\""): Save token_start.
+	(<INITIAL>"%{", "{", "%%"): Save code_start.
+	(<SC_AFTER_IDENTIFIER>): New state, looking for a colon.
+	(<SC_YACC_COMMENT>, <SC_COMMENT>, <SC_LINE_COMMENT>):
+	BEGIN context_state at end, not INITIAL.
+	(<SC_ESCAPED_STRING>"\"", <SC_ESCAPED_CHARACTER>"'",
+	<SC_BRACED_CODE>"}", <SC_PROLOGUE>"%}", <SC_EPILOGUE><<EOF>>):
+	Return correct token start.
+	(<SC_BRACED_CODE,SC_PROLOGUE,SC_EPILOGUE>): Save start boundary when
+	the start of a character, string or multiline comment is found.
+	* tests/conflicts.at (S/R in initial, Defaulted Conflicted
+	Reduction): Adjust reported locations to match the more-precise
+	results now expected.
+	* tests/input.at (Invalid $n, Invalid @n, Type Clashes): Likewise.
+	* tests/reduce.at (Useless Rules, Reduced Automaton,
+	Underivable Rules): Likewise.
+	* tests/regression.at (Invalid inputs): No longer `expecting ";"
+	or "|"' now that so many other tokens are allowed by the new grammar.
+
+	* src/complain.h (current_file): Remove duplicate decl;
+	current_file is now owned by files.h.
+	* src/complain.c, src/scan-gram.l: Include files.h.
+
+2002-12-06  Paul Eggert  <eggert@twinsun.com>
+
+	* data/glr.c (yy_reduce_print): Don't assume that yyrline[yyrule]
+	promotes to int; it might be unsigned int.
+	* data/yacc.c (yy_reduce_print): Likewise.
+
+	* doc/bison.texinfo (Table of Symbols): YYERROR_VERBOSE should
+	be #defined in the prologue, not in the Bison declarations.
+	This fixes Debian Bug 102878, reported by Shaul Karl.
+
+2002-12-02  Paul Eggert  <eggert@twinsun.com>
+
+	* configure.ac (AC_REPLACE_FUNCS): Add strtoul.
+	* lib/strtoul.c: New file, from gnulib.
+	This fixes a porting bug reported by Peter Klein in
+	<http://lists.gnu.org/archive/html/bug-bison/2002-12/msg00000.html>.
+
+2002-11-30  Paul Eggert  <eggert@twinsun.com>
+
+	* src/scan-gram.l (no_cr_read, extend_location): Move to epilogue,
+	and put only a forward declaration in the prologue.  This is for
+	consistency with the other scanner helper functions.
+
+	Type clashes now generate warnings, not errors, since it
+	appears that POSIX may allow some grammars with type clashes.
+	* src/reader.c (grammar_current_rule_check): Warn about
+	type clashes instead of complaining.
+	* tests/input.at (Type Clashes): Expect warnings, not complaints.
+
+	Add Yacc library, since POSIX requires it.
+	* doc/bison.texinfo (Yacc Library): New node.  Regenerate top menu.
+	* lib/Makefile.am (lib_LIBRARIES, liby_a_SOURCES): New macros.
+	* lib/main.c, lib/yyerror.c: New files.
+
+	gram_error can be static; it need not be extern.
+	* src/reader.h (gram_error): Remove decl.
+	* src/parse-gram.y (gram_error): Now static.  Add static decl.
+	(print_token_value): Omit parameter names from forward decl,
+	for consistency.
+
+2002-11-29  Paul Eggert  <eggert@twinsun.com>
+
+	* doc/bison.texinfo: Emphasize that yylex and yyerror must
+	be declared before being used.  E.g., one should typically
+	declare them in the prologue.  Use GNU coding style in examples.
+	Put "const" consistently after the type it modifies.  Mention
+	that C99 supports "inline".  Mention that yyerror traditionally
+	returns "int".
+
+	%parse-param and %lex-param now take just one argument, the
+	declaration; the argument name is deduced from the declaration.
+
+	* doc/bison.texinfo (Parser Function, Pure Calling, Error
+	Reporting, Table of Symbols): Document this.
+	* src/parse-gram.y (add_param): New function.
+	(COMMA): Remove.
+	(declaration): Implement new rule for %parse-param and %lex-param.
+	* src/scan-gram.l: "," now elicits a warning, rather than being
+	a token; this is more compatible with byacc.
+	* tests/calc.at (Simple LALR Calculator): Adopt new convention.
+
+2002-11-27  Paul Eggert  <eggert@twinsun.com>
+
+	Rename identifiers to avoid real and potential collisions.
+
+	* data/c.m4 (b4_yysymprint_generate): yyout -> yyoutput,
+	to avoid collision with lex macro described by Bruce Lilly in
+	<http://lists.gnu.org/archive/html/bug-bison/2002-11/msg00114.html>.
+	* tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Likewise.
+	* doc/bison.texinfo (Prologue, Tracing): yyprint -> print_token_value.
+	* src/parse-gram.y (print_token_value): Renamed from yyprint.
+	All uses changed.
+	(YYPARSE_PARAM, YYLEX_PARAM, yycontrol): Remove.  All uses changed.
+	The name "yycontrol" violates the name space rules, and this stuff
+	wasn't being used anyway.
+	(input): Remove action; this stuff wasn't being used.
+	(gram_error): Rename local variable yylloc -> loc.
+	* src/reader.h (struct gram_control_s, gram_control_t): Remove.
+	(YY_DECL): Don't use "yy" at start of local variables.
+	All uses changed, e.g., yylloc -> loc.
+	* src/scan-gram.l (STEP): Renamed from YY_STEP.  All uses changed.
+	(STRING_GROW): Renamed from YY_OBS_GROW.  All uses changed.
+	(STRING_FINISH): Renamed from YY_OBS_FINISH.  All uses changed.
+	(STRING_FREE): Renamed from YY_OBS_FREE.  All uses changed.
+
+	* src/parse-gram.y (gram_error): loc is now const *.
+	* src/reader.h (gram_error): Likewise.
+
+2002-11-24  Paul Eggert  <eggert@twinsun.com>
+
+	Version 1.75c.
+
+	* tests/actions.at (Actions after errors): Use an output format
+	more similar to that of the Printers and Destructors test.
+	Test the position of the ';' token too.
+	(Printers and Destructors): Likewise.
+	(Printers and Destructors: %glr-parser): Remove for now, to avoid
+	unnecessarily alarming people when the test fails.
+
+	* data/yacc.c (yyerrlab1): Move this label down, so that the
+	parser does not discard the lookahead token if the user code
+	invokes YYERROR.  This change is required for POSIX conformance.
+
+	* lib/error.c: Sync with gnulib.
+
+2002-11-22  Paul Eggert  <eggert@twinsun.com>
+
+	* lib/quotearg.c, lib/quotearg.h: Sync with gnulib.
+	* lib/mbswidth.c, lib/mbswidth.h: Likewise.
+	* lib/xmalloc.c: Likewise.
+
+2002-11-20  Paul Eggert  <eggert@twinsun.com>
+
+	* lib/argmatch.c, lib/argmatch.h: Sync with gnulib.
+
+2002-11-20  Paul Eggert  <eggert@twinsun.com>
+
+	Avoid use of <assert.h>, as the GNU Coding Standards hint that one
+	should use `if (! x) abort ();' rather than `assert (x);', and
+	anyway it's one less thing to worry about configuring.
+
+	* data/glr.c, lib/hash.c, src/system.h: Do not include <assert.h>.
+	* tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Likewise,
+	and replace all instances of assert with abort.
+	* tests/calc.at (_AT_DATA_CALC_Y): Likewise.
+	* tests/cxx-type.at (_AT_TEST_GLR_CXXTYPES): Likewise.
+
+	* data/glr.c (yydoAction, yyglrReduce, yysplitStack, yyresolveStates,
+	yyresolveAction, yyprocessOneStack): Use abort rather than assert.
+	* lib/hash.c (hash_lookup, hash_get_first, hash_get_next,
+	hash_find_entry, hash_rehash, hash_insert): Likewise.
+	* src/conflicts.c (resolve_sr_conflict): Likewise.
+	* src/lalr.c (set_goto_map, map_goto): Likewise.
+	* src/nullable.c (nullable_compute): Likewise.
+	* src/output.c (prepare_rules, token_definitions_output): Likewise.
+	* src/reader.c (packgram, reader): Likewise.
+	* src/state.c (state_new, state_free, state_transitions_set,
+	state_reduction_find): Likewise.
+	* src/symtab.c (symbol_user_token_number_set, symbol_make_alias,
+	symbol_pack): Likewise.
+	* src/tables.c (conflict_row, pack_vector): Likewise.
+	* src/vcg.c (get_color_str, get_textmode_str, get_shape_str,
+	get_layoutalgorithm_str, get_decision_str, get_orientation_str,
+	get_node_alignement_str, get_arrow_mode_str, get_crossing_type_str,
+	get_view_str, get_linestyle_str, get_arrowstyle_str): Likewise.
+
+	* lib/argmatch.h (ARRAY_CARDINALITY): Do not bother to #undef.
+	(ARGMATCH_CONSTRAINT): New macro.
+	(ARGMATCH_ASSERT): Use it.
+
+	* src/system.h (verify): New macro.
+	* src/getargs.c (trace_argmatch, report_argmatch): Use verify
+	rather than assert.
+	* src/tables.c (tables_generate): Likewise.
+
+	* src/struniq.c (struniq_assert): Now returns void, and aborts
+	if the assertion is false.
+	(struniq_assert_p): Remove.
+	* src/struniq.h: Likewise.
+
+2002-11-18  Paul Eggert  <eggert@twinsun.com>
+
+	* data/glr.c (yygetLRActions): Replace `yyindex' with
+	`yytable[yyindex]' to fix typo introduced in my 2002-11-09 patch.
+	This fixes the regression with Sun ONE Studio 7 cc that I reported in
+	<http://lists.gnu.org/archive/html/bug-bison/2002-11/msg00077.html>.
+
+2002-11-18  Akim Demaille  <akim@epita.fr>
+
+	* doc/bison.texinfo (Tracing): `yyprint' shouldn't prepend a
+	space.
+	From Tim Van Holder.
+
+2002-11-17  Paul Eggert  <eggert@twinsun.com>
+
+	Pacify Sun ONE Studio 7 lint.  Also, rename "ParseError"
+	to "SyntaxError" for consistency with my 2002-11-15 change.
+
+	* data/glr.c (YYDPRINTF, YYDSYMPRINT, YYDSYMPRINTF) [!YYDEBUG]: Do
+	not define to {}, since this breaks the common use of `YYDPRINTF
+	((...));' if a single statement is desired (e.g. before `else').
+	Work around GCC warnings by surrounding corresponding calls with
+	{} if needed.
+	(yyhasResolvedValue): Remove unused function.
+	(yymergeOptionSets, yyresolvStack): Use `continue;' for empty
+	loop body.
+	(yyreportSyntaxError): Renamed from yyreportParseError.
+	(yyrecoverSyntaxError): Renamed from yyrecoverParseError.
+	All uses changed.
+	* tests/calc.at (_AT_DATA_CALC_Y): Make vars static instead of
+	extern when possible.  Remove unused initializations.
+
+2002-11-16  Akim Demaille  <akim@epita.fr>
+
+	Augment the similarity between GLR and LALR traces.
+
+	* data/yacc.c (yy_stack_print, YY_STACK_PRINT, yy_reduce_print)
+	(YY_REDUCE_PRINT): New.
+	(yyparse): Use them.
+	* data/glr.c (yy_reduce_print): Use YYFPRINTF, no need for
+	YYDPRINT here.
+	(yyglrReduce, yyrecoverParseError, yyparse): Don't report the
+	state reached after the reduction/recovery, since...
+	(yyparse, yyprocessOneStack): Report the state we are entering in.
+
+2002-11-16  Akim Demaille  <akim@epita.fr>
+
+	* src/getargs.h, src/getargs.c (trace_e, trace_args, trace_types):
+	Add support for --trace=skeleton.
+	* src/scan-skel.l: %option debug.
+	Scan strings of non-@ or \n instead of character by character.
+	(scan_skel): Handle trace_skeleton.
+	(QPUTS): New.
+	(@output_parser_name@, @output_header_name@): ``Restore'' their
+	support (used to be M4 macros).
+	* data/yacc.c: Quote larger chunks, a la glr.c.
+	* data/lalr1.cc: Likewise.
+	The header guards are no longer available, so use some other
+	string than `YYLSP_NEEDED'.
+
+2002-11-16  Akim Demaille  <akim@epita.fr>
+
+	Make the ``Printers and Destructors'' test more verbose, taking
+	`yacc.c''s behavior as (possibly wrong) reference.
+
+	* tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Use printf
+	instead of fprint on stdout.
+	Set and report the last_line of the symbols.
+	Consistently display values and locations.
+
+2002-11-16  Paul Eggert  <eggert@twinsun.com>
+
+	* data/yacc.c: Avoid over-quoting of __line__ and __file__.
+
+2002-11-15  Paul Eggert  <eggert@twinsun.com>
+
+	* tests/actions.at (Actions after errors): New test case.
+
+	* data/glr.c, data/lalr1.cc, data/yacc.cc, doc/bison.texinfo,
+	src/conflicts.c, src/parse-gram.y, src/tables.c, src/tables.h,
+	tests/action.at, tests/calc.at, tests/conflicts.at,
+	tests/cxx-type.at, tests/regression.at:
+	"parse error" -> "syntax error" for POSIX compatibility.
+	"parsing stack overflow..." -> "parser stack overflow" so
+	that code matches Bison documentation.
+
+2002-11-15  Akim Demaille  <akim@epita.fr>
+
+	* src/parse-gram.y (declaration): Have %parse-param and %lex-param
+	take two BRACED_CODE, not two string_content.
+	Free the scanner's obstack when we are done.
+	(code_content): New.
+	* tests/calc.at: Adjust.
+	* doc/bison.texinfo: Adjust.
+	Also, make sure to include the `,' for these declarations.
+
+2002-11-15  Tim Van Holder  <tim.van.holder@pandora.be>
+
+	* m4/prereq.m4: Removed the commented jm_PREREQ_HASH
+	definition; avoids potential autoreconf problems.
+
+2002-11-15  Akim Demaille  <akim@epita.fr>
+
+	Always check the value returned by yyparse.
+
+	* tests/calc.at (_AT_DATA_CALC_Y): Have `main' exit with the value
+	returned by yyparse.
+	(_AT_CHECK_CALC_ERROR): Take the expected exit value as argument.
+	Adjust calls.
+	* tests/glr-regr1.at (glr-regr1.y): Have `main' exit with the value
+	returned by yyparse.
+
+2002-11-14  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>
+
+	* data/glr.c (yyFail): Always set yyerrflag.  Corrects regression
+	on input.at test.
+
+2002-11-14  Paul Eggert  <eggert@twinsun.com>
+
+	* src/output.c (output_skeleton): Call xfopen instead of
+	duplicating xfopen's body.
+
+	Fix bugs reported by Nelson H. F. Beebe in
+	<http://lists.gnu.org/archive/html/bug-bison/2002-11/msg00078.html>.
+
+	* tests/headers.at (AT_TEST_CPP_GUARD_H): Don't assume that
+	"$CC -E foo.h" is allowed, as this doesn't work with the Portland
+	Group compiler.  Instead, use "$CC -E bar.c".  Include the .h
+	file twice in the grammar, as an extra check.
+
+	* tests/input.at (Torturing the Scanner): Surround the
+	backslash-newline tests with "#if 0", to make it less likely that
+	we'll run into compiler bugs.  Bring back solitary \ inside
+	comment, but add a closing comment to work around HP C bug.  Don't
+	test backslash-newline in C character constant.
+
+2002-11-14  Akim Demaille  <akim@epita.fr>
+
+	* tests/synclines.at (AT_SYNCLINES_COMPILE): Ignore the exit
+	status of the compiler.
+	Calling `exit 1' is no longer needed.
+	Reported by Nelson H. F. Beebe.
+
+2002-11-14  Akim Demaille  <akim@epita.fr>
+
+	* tests/atlocal.in (CPPFLAGS): We have config.h.
+	* tests/testsuite.at (AT_DATA_GRAMMAR_PROLOGUE, AT_DATA_GRAMMAR):
+	New.
+	* tests/actions.at, tests/calc.at, tests/conflicts.at,
+	* tests/cxx-type.at, tests/glr-regr1.at, tests/headers.at,
+	* tests/regression.at, tests/torture.at: Use them for all the
+	grammars that are to be compiled.
+	* tests/cxx-type.at (_AT_TEST_GLR_CALC): Rename as...
+	* tests/cxx-type.at (_AT_TEST_GLR_CXXTYPES): this.
+	* doc/bison.texinfo (GLR Parsers): Document `inline'.
+
+2002-11-14  Akim Demaille  <akim@epita.fr>
+
+	* doc/bison.texinfo: Various formatting changes (alignments in
+	samples, additional @group/@end group, GCS in samples.
+	Use @deffn instead of simple @table to define the directives,
+	macros, variables etc.
+
+2002-11-13  Paul Eggert  <eggert@twinsun.com>
+
+	Fix some bugs reported by Albert Chin-A-Young in
+	<http://lists.gnu.org/archive/html/bug-bison/2002-11/msg00066.html>.
+
+	* tests/input.at (Torturing the Scanner): Don't invoke "cc a.c b.c
+	-o c"; the HP C compiler chatters during compilation.
+	Instead, invoke "cc -c a.c -o a.o; cc -c b.c -o b.o; cc a.o b.o -o c".
+	* tests/headers.at (export YYLTYPE): Likewise.
+
+	* tests/input.at (Torturing the Scanner): Remove lines containing
+	solitary backslashes, as they tickle a bug in the HP C compiler.
+
+	* tests/glr-regr1.at (Badly Collapsed GLR States): Avoid //
+	comments, since they're not portable.  Use GNU coding style.
+
+2002-11-13  Akim Demaille  <akim@epita.fr>
+
+	* data/yacc.c: Leave bigger chunks of quoted text.
+	(YYDSYMPRINTF): New.
+	Use it to report symbol activities.
+	* data/glr.c (YYDSYMPRINTF): New.
+	Use it.
+
+2002-11-12  Paul Eggert  <eggert@twinsun.com>
+
+	Version 1.75b.
+
+	* data/glr.c (yydoAction): Return YYRESULTTAG, not int.
+	(yyglrReduce): Return yyok, not 0.
+	This should avoid the enumerated-type warnings reported
+	by Nelson H. F. Beebe in
+	<http://lists.gnu.org/archive/html/bug-bison/2002-11/msg00057.html>.
+
+	* lib/bbitset.h (BITSET_INLINE): Remove.
+	* lib/bitset.h [! BITSET_INLINE]: Remove.
+	(bitset_set, bitset_reset, bitset_test): Rename local vars
+	to avoid shadowing warnings by GCC.
+
+	* data/glr.c (inline): Remove #define.  It's the user's
+	responsibility to #define it away, just like 'const'.
+	This fixes one of the bugs reported by Nelson H. F. Beebe in
+	<http://lists.gnu.org/archive/html/bug-bison/2002-11/msg00058.html>.
+
+	* Makefile.maint (po-check): Scan .l and .y files instead of the
+	.c and the .h files that they generate.  This fixes the bug
+	reported by Tim Van Holder in:
+	<http://lists.gnu.org/archive/html/bison-patches/2002-11/msg00062.html>
+	Look for N_ as well as for _.  Try to avoid matching #define for
+	N_ and _.
+	* po/POTFILES.in: Remove src/parse-gram.c, src/scan-gram.c,
+	src/system.h.  Add src/parse-gram.y, src/scan-gram.l.
+	* src/scan-gram.l: Revamp regular expressions so that " and '
+	do not confuse xgettext.
+
+	* src/struniq.h (struniq_new): Do not declare the return type
+	to be 'const'; this violates the C standard.
+	* src/struniq.c (struniq_new): Likewise.
+
+2002-11-12  Albert Chin-A-Young <china@thewrittenword.com>
+
+	* src/Makefile.am (LDADD): Link $(LIBINTL) last to avoid the
+	duplicate definition of optind on Tru64 UNIX 4.0D with the Compaq
+	linker.
+
+2002-11-12  Akim Demaille  <akim@epita.fr>
+
+	* Makefile.maint: Sync with Autoconf:
+	(local_updates): New.
+
+2002-11-12  Akim Demaille  <akim@epita.fr>
+
+	* po/POTFILES.in (src/lalr.c, src/state.c): Remove
+
+2002-11-12  Akim Demaille  <akim@epita.fr>
+
+	* tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Display the
+	locations.
+
+2002-11-12  Akim Demaille  <akim@epita.fr>
+
+	* data/c.m4 (b4_yysymprint_generate): Pass *yyvaluep to YYPRINT,
+	not yyvalue.
+
+2002-11-12  Akim Demaille  <akim@epita.fr>
+
+	* tests/actions.at (AT_CHECK_PRINTER_AND_DESTRUCTOR): New.
+	Use it to test the GLR parser.
+
+2002-11-12  Akim Demaille  <akim@epita.fr>
+
+	* tests/regression.at (input.y): s/YYEOF/MYEOF/, as the skeleton
+	defines it.
+	* data/glr.c (yystos): New.
+	(b4_yysymprint_generate, b4_yydestruct_generate): Invoke.
+	(YYDSYMPRINT): New.
+	(yyval): Don't define it, it is handled via M4.
+	(yyrecoverParseError): Free verbosely the discarded symbols.
+	* data/yacc.c (yysymprint): Remove, rather...
+	(b4_yysymprint_generate): invoke.
+	* data/c.m4 (b4_yysymprint_generate): New.
+	Accept pointers as arguments, as opposed to the version from
+	yacc.c.
+	(b4_yydestruct_generate): Likewise.
+	* tests/cations.at (Printers and Destructors): Use Bison directives
+	instead of CPP macros.
+	Don't rely on internal details.
+
+2002-11-12  Akim Demaille  <akim@epita.fr>
+
+	* data/c.m4 (b4_yydestruct_generate, b4_symbol_actions): New.
+	* data/yacc.c: Rename yychar1 as yytoken, as in glr.c.
+	Don't work on yychar (i.e., do set it to YYEMPTY, don't match
+	it against YYEMPTY and so forth), work on yytoken (i.e., set
+	it to YYEMPTY etc.).
+	(yydestruct): Replace with a b4_yydestruct_generate invocation.
+	(b4_symbol_actions): Remove.
+	* data/glr.c (YYTRANSLATE): As for yacc.c, if negative, it stands
+	for 0, end-of-input.
+
+2002-11-12  Akim Demaille  <akim@epita.fr>
+
+	* doc/bison.texinfo (Destructor Decl): New.
+
+2002-11-12  Akim Demaille  <akim@epita.fr>
+
+	* src/tables.c (tables_generate): Use free for pointers that
+	cannot be NULL, not XFREE.
+	(pack_vector): Use assert, not fatal, for bound violations.
+	* src/state.c (state_new): Likewise.
+	* src/reader.c (reader): Likewise.
+	* src/lalr.c (set_goto_map): Likewise.
+	* src/location.h (LOCATION_PRINT): If first_line is 0, just issue
+	the file name.
+
+2002-11-12  Akim Demaille  <akim@epita.fr>
+
+	* src/scan-gram.l, src/reader.h (scanner_last_string_free):
+	Restore.
+	* src/scan-gram.l (last_string): Is global to the file, not to
+	yylex.
+	* src/parse-gram.y (input): Don't append the epilogue here,
+	(epilogue.opt): do it here, and free the scanner's obstack.
+	* src/reader.c (epilogue_set): Rename as...
+	(epilogue_augment): this.
+	* data/c.m4 (b4_epilogue): Defaults to empty.
+
+2002-11-12  Akim Demaille  <akim@epita.fr>
+
+	* src/getargs.c (long_options): Remove duplicates.
+	* src/vmsgetargs.c, src/build.com, src/bison.cld, src/vmshlp.mar:
+	Remove.
+	* doc/bison.rnh: Remove.
+	* doc/bison.texinfo (VMS Invocation): Remove.
+
+2002-11-12  Akim Demaille  <akim@epita.fr>
+
+	* src/struniq.h, src/struniq.c (struniq_t): Is const.
+	(STRUNIQ_EQ, struniq_assert, struniq_assert_p): New.
+
+	Use struniq for symbols.
+
+	* src/symtab.h (symbol_t): The tag member is a struniq.
+	(symbol_type_set): Adjust.
+	* src/symtab.c (symbol_new): Takes a struniq.
+	(symbol_free): Don't free the tag member.
+	(hash_compare_symbol_t, hash_symbol_t): Rename as...
+	(hash_compare_symbol, hash_symbol): these.
+	Use the fact that tags as struniqs.
+	(symbol_get): Use struniq_new.
+	* src/symlist.h, src/symlist.c (symbol_list_n_type_name_get):
+	Returns a strniq.
+	* src/reader.h (merger_list, grammar_currentmerge_set): The name
+	and type members are struniqs.
+	* src/reader.c (get_merge_function)
+	(grammar_current_rule_merge_set): Adjust.
+	(TYPE, current_type): Are struniq.
+
+	Use struniq for file names.
+
+	* src/files.h, src/files.c (infile): Split into...
+	(grammar_file, current_file): these.
+	* src/scan-gram.c (YY_USER_INIT, handle_syncline): Adjust.
+	* src/reduce.c (reduce_print): Likewise.
+	* src/getargs.c (getargs): Likewise.
+	* src/complain.h, src/complain.c: Likewise.
+	* src/main.c (main): Call struniqs_new early enough to use it for
+	file names.
+	Don't free the input file name.
+
+2002-11-12  Akim Demaille  <akim@epita.fr>
+
+	* src/symtab.c (symbol_free): Remove dead deactivated code:
+	type_name are properly removed.
+	Don't use XFREE to free items that cannot be NULL.
+	* src/struniq.h, src/struniq.c: New.
+	* src/main.c (main): Initialize/free struniqs.
+	* src/parse-gram.y (%union): Add astruniq member.
+	(yyprint): Adjust.
+	* src/scan-gram.l (<{tag}>): Return a struniq.
+	Free the obstack bit that used to store it.
+	* src/symtab.h (symbol_t): The 'type_name' member is a struniq.
+
+2002-11-11  Paul Eggert  <eggert@twinsun.com>
+
+	Revamp to fix many (but not all) of the C- and M4-related quoting
+	problems.  Among other things, this fixes the Bison bug reported
+	by Jan Hubicka when processing the Bash grammar; see:
+	<http://lists.gnu.org/archive/html/bison-patches/2002-11/msg00039.html>
+
+	Use new @ escapes consistently.  Represent brackets with @{ and @}
+	rather than @<:@ and @:>@, since this works a bit better with dumb
+	editors like vi.  Represent @ with @@, since @ is now consistently
+	an escape.  Use @oline@ and @ofile@ rather than __oline__ and
+	__ofile__, to avoid unexpected expansions.  Similarly, use @output
+	rather than #output.
+
+	* data/c.m4 (b4_copyright): Omit file name from comment, since
+	the file name could contain "*/".
+	(b4_synclines_flag): Don't quote the 2nd argument; it should already
+	be quoted.  All uses changed.
+
+	* data/glr.c: Use new @ escapes consistently.
+	(b4_input_suffix, b4_output_parser_suffix, b4_output_parser_name,
+	b4_output_header_suffix, b4_output_header_name, b4_header_guard):
+	Remove, since they couldn't handle arbitrary characters in file
+	names.
+	* data/lalr1.cc: Likewise.
+	* data/yacc.c: Likewise.
+
+	* src/files.c (output_infix): Remove; all uses removed.
+	* src/files.h: Likewise.
+
+	* data/glr.c: Remove use of "#ifdef b4_header_guard", since it
+	mishandled funny characters in file names, and anyway it isn't
+	needed any more.
+	* data/yacc.c: Likewise.
+	* data/lalr1.cc: Use YYSLP_NEEDED instead of b4_header_guard.
+
+	* data/glr.c (YYSTYPE_IS_TRIVIAL): Define when the .h file would.
+	* data/yacc.c: Likewise.
+
+	* src/muscle_tab.c: Include quotearg.h, since we need to quote C
+	strings now.
+	(muscle_init): Quote filename as a C string.
+	* src/muscle_tab.h (MUSCLE_GROW_STRING_PAIR): Remove; unused.
+	(MUSCLE_OBSTACK_SGROW, MUSCLE_INSERT_C_STRING): New macros.
+	* src/output.c (escaped_file_name_output): New function.
+	(prepare_symbols): Quote tokens for M4.
+	(prepare): Don't insert output_infix, output_prefix,
+	output_parser_name, output_header_name; this is now down by scan-skel.
+	Insert skeleton as a C string.
+
+	* src/output.c (user_actions_output, symbol_destructors_output,
+	symbol_printers_output): Quote filenames for C and M4.
+	* src/reader.c (prologue_augment, epilogue_set): Likewise.
+
+	* src/scan-gram.l (<SC_CHARACTER>): Don't worry about any backslash
+	escapes other than \\ and \'; this simplifies the code.
+	(<SC_STRING>): Likewise, for \\ and \".
+	(<SC_COMMENT,SC_LINE_COMMENT,SC_STRING,SC_CHARACTER,SC_BRACED_CODE,
+	SC_PROLOGUE,SC_EPILOGUE>): Escape $ and @, too.
+	Use new escapes @{ and @} for [ and ].
+
+	* src/scan-skel.l (yylineno, yyoutname): Remove static vars, replacing
+	them with auto vars.
+	Switch to new escape scheme, where @ is the escape character uniformly.
+	Abort if a stray escape character is found.  Avoid unbounded input
+	buffer when parsing non-escaped text.
+
+	* tests/input.at (Torturing the Scanner): Add tests that @oline@,
+	__oline__, #output, $@, and @{ do not have unintended meanings.
+
+2002-11-09  Paul Eggert  <eggert@twinsun.com>
+
+	Fix the test failure due to GCC warnings described in
+	<http://lists.gnu.org/archive/html/bug-bison/2002-11/msg00000.html>.
+	* data/glr.c (yyis_pact_ninf, yyis_table_ninf): New macros, which
+	evaluate to 0 if it's impossible for NINF to be in the respective
+	table.
+	(yygetLRActions, yyrecoverParseError): Use them.
+
+	* src/scan-gram.l (unexpected_end_of_file): Fix bug: columns were
+	counted in the token inserted at end of file.  Now takes
+	location_t *, not location_t, so that the location can be
+	adjusted.  All uses changed.
+
+	* tests/regression.at (Invalid inputs): Adjust wording in
+	diagnostic to match the new behavior.
+
+	* tests/torture.at (AT_DATA_TRIANGULAR_GRAMMAR,
+	AT_DATA_HORIZONTAL_GRAMMAR, AT_DATA_LOOKAHEADS_GRAMMAR,
+	AT_DATA_STACK_TORTURE): Replace `assert (x);' with `if (! (x))
+	abort ();'.  This reduces the runtime of the "Many lookaheads"
+	test from 27.6 to 2.7 minutes on a 440 MHz Ultrasparc III running
+	GCC 3.2.
+
+2002-11-07  Paul Eggert  <eggert@twinsun.com>
+
+	* src/parse-gram.y (CHARACTER): Remove unused token.
+	All uses removed.
+
+	* src/scan-gram.l: Remove stack option.  We no longer use the
+	stack, since the stack was never deeper than 1; instead, use the
+	new auto var c_context to record the stacked value.
+
+	Remove nounput option.  At an unexpected end of file, we now unput
+	the minimal input necessary to end cleanly; this simplifies the
+	code.
+
+	Avoid unbounded token sizes where this is easy.
+
+	(unexpected_end_of_file): New function.
+	Use it to systematize the error message on unexpected EOF.
+	(last-string): Now auto, not static.
+	(YY_OBS_FREE): Remove unnecessary do while (0) wrapper.
+	(scanner_last_string_free): Remove; not used.
+	(percent_percent_count): Move decl to just before use.
+	(SC_ESCAPED_CHARACTER): Return ID at unexpected end of file,
+	not the (never otherwised-used) CHARACTER.
+
+2002-11-07  Akim Demaille  <akim@epita.fr>
+
+	Let yyerror always receive the msg as last argument, so that
+	yyerror can be variadic.
+
+	* data/yacc.c (b4_yyerror_args): New.
+	Use it when calling yyerror.
+	* data/glr.c (b4_yyerror_args, b4_lyyerror_args): New.
+	Use it when calling yyerror.
+	* doc/bison.texinfo (Error Reporting): Adjust.
+	* tests/calc.at (_AT_DATA_CALC_Y): Adjust.
+	* tests/cxx-type.at (_AT_TEST_GLR_CALC): Adjust.
+
+2002-11-06  Akim Demaille  <akim@epita.fr>
+
+	#line should have quoted strings.
+	Ideally, this should be done by m4_quotearg.
+
+	* src/scan-skel.l: Include quotearg.h.
+	Quote __ofile__.
+	* src/output.c (symbol_printers_output)
+	(symbol_destructors_output): Quote the file name.
+
+2002-11-06  Akim Demaille  <akim@epita.fr>
+
+	* tests/regression.at (Invalid inputs): Adjust to the recent
+	messages.
+
+2002-11-06  Akim Demaille  <akim@epita.fr>
+
+	Restore --no-lines.
+	Reported by Jim Kent.
+
+	* data/c.m4 (b4_syncline): New.
+	* data/glr.c, data/yacc.c, data/lalr1.cc: Use it.
+	* src/reader.c (prologue_augment, epilogue_set): Use b4_syncline.
+	* src/output.c (user_actions_output): Likewise.
+	(prepare): Define 'b4_synclines_flag'.
+	* src/muscle_tab.c (muscle_init): Don't define b4_linef.
+
+2002-11-06  Akim Demaille  <akim@epita.fr>
+
+	* src/main.c (main): Free `infile'.
+	* src/scan-gram.l (handle_syncline): New.
+	Recognize `#line'.
+	* src/output.c (user_actions_output, symbol_destructors_output)
+	(symbol_printers_output): Use the location's file name, not
+	infile.
+	* src/reader.c (prologue_augment, epilogue_set): Likewise.
+
+2002-11-05  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>
+
+	* src/tables.c (matching_state): Don't allow states to match if
+	either has GLR conflict entries.
+
+2002-11-05  Paul Eggert  <eggert@twinsun.com>
+
+	* src/scan-gram.l: Use more accurate diagnostics, e.g.
+	"integer out of range" rather than "invalid value".
+	* tests/input.at (Invalid $n, Invalid @n): Change expected wording
+	accordingly.
+
+	Scan <% and %> digraphs in C code as POSIX 1003.1-2001 requires.
+	Also, remove one static variable in the scanner.
+
+	* src/scan-gram.l (braces_level): Now auto, not static.
+	Initialize to zero if the compiler is being picky.
+	(INITIAL): Clear braces_level instead of incrementing it.
+	(SC_BRACED_CODE): Treat <% and %> as { and } when inside C code,
+	as POSIX 1003.1-2001 requires.
+	* src/system.h (IF_LINT): New macro, taken from coreutils.
+	* configure.ac: Define "lint" if --enable-gcc-warnings.
+
+2002-11-05  Akim Demaille  <akim@epita.fr>
+
+	* src/scan-gram.l: When it starts with `%', complain about the
+	whole directive, not just that `invalid character: %'.
+
+2002-11-04  Akim Demaille  <akim@epita.fr>
+
+	* Makefile.maint: Update from Autoconf.
+	(update, cvs-update, po-update, do-po-update): New.
+
+2002-11-04  Akim Demaille  <akim@epita.fr>
+
+	* tests/glr-regr1.at (Badly Collapsed GLR States): Prototype yylex
+	and yyerror.
+	Have yyerror `use' its arguments.
+	* tests/calc.at (AT_CHECK_PUSHDEFS): AT_YYERROR_SEES_LOC_IF
+	returns true when location & yacc & pure & parse-param.
+	(_AT_DATA_CALC_Y): Let yyerror ``use'' its arguments.
+
+2002-11-04  Akim Demaille  <akim@epita.fr>
+
+	* src/location.h (LOCATION_PRINT): Use quotearg slot 3 to avoid
+	clashes.
+	* src/scan-gram.l: Use [\'] instead of ['] to pacify
+	font-lock-mode.
+	Use complain_at.
+	Use quote, not quote_n since LOCATION_PRINT no longer uses the
+	slot 0.
+
+2002-11-03  Paul Eggert  <eggert@twinsun.com>
+
+	* src/reader.c (get_merge_function, grammar_current_rule_check):
+	Use consistent diagnostics for reporting type name clashes.
+	Quote the types with <>, for consistency with Yacc.
+	* tests/input.at (Type Clashes): Adjust to diagnostic changes.
+
+2002-11-03  Akim Demaille  <akim@epita.fr>
+
+	* data/c.m4 (b4_identification, b4_user_args, b4_parse_param):
+	New.
+	* data/yacc.m4 (b4_pure_args, b4_Pure_args): New.
+	(b4_parse_param): Remove.
+	Use b4_identification.
+	Propagate b4_pure_args where needed to pass them to yyerror.
+	* data/glr.m4 (b4_parse_param): Remove.
+	(b4_user_formals, b4_pure_args, b4_pure_formals, b4_lpure_args)
+	(b4_lpure_formals): New.
+	Use b4_identification.
+	(YY_USER_FORMALS, YY_USER_ARGS): Remove, replaced by
+	b4_user_formals and b4_user_args.
+	(yyexpandGLRStack, yyFail, yyaddDeferredAction, yyglrShiftDefer)
+	(yyreportAmbiguity): When using a pure parser, also need
+	the location, and the parse-params.
+	Adjust callers.
+	(yyuserAction, yyglrShift, yyreportParseError, yyrecoverParseError):
+	When using a pure parser, also need the parse-params.
+	Adjust callers.
+	* tests/calc.at: Test pure (%pure-parser) and absolutely pure
+	(%pure-parser + %parse-param) LALR and GLR parsers.
+	(AT_CHECK_PUSHDEFS, AT_CHECK_POPDEFS): New, define AT_PARAM_IF,
+	AT_LOCATION_IF, AT_PURE_IF, AT_GLR_IF, AAT_PURE_AND_LOC_IF,
+	AT_GLR_OR_PARAM_IF, AT_YYERROR_ARG_LOC_IF, AT_YYERROR_SEES_LOC_IF.
+	(_AT_DATA_CALC_Y): Equip for purity of yyerror.
+	(_AT_CHECK_CALC_ERROR): Use AT_YYERROR_SEES_LOC_IF.
+	* tests/cxx-type.at (_AT_TEST_GLR_CALC): Equip for yyerror purity.
+	* doc/bison.texinfo: Untabify the whole file.
+	(Parser Function): Document %parse-param, deprecate YYPARSE_PARAM.
+	(Pure Calling): Document %lex-param, deprecate YYLEX_PARAM.
+	(Error Reporting): Adjust to these new directives.
+	Document %error-verbose, deprecate YYERROR_VERBOSE.
+
+2002-11-03  Akim Demaille  <akim@epita.fr>
+
+	* tests/calc.at: Change all the AT_CHECK_CALC_LALR and
+	AT_CHECK_CALC_GLR invocations to use % directives, instead of
+	command line options.
+	* tests/cxx-type.at: Formatting changes.
+
+2002-11-03  Paul Eggert  <eggert@twinsun.com>
+
+	* src/scan-gram.l: Revamp to fix POSIX incompatibilities,
+	to count columns correctly, and to check for invalid inputs.
+
+	Use mbsnwidth to count columns correctly.  Account for tabs, too.
+	Include mbswidth.h.
+	(YY_USER_ACTION): Invoke extend_location rather than LOCATION_COLUMNS.
+	(extend_location): New function.
+	(YY_LINES): Remove.
+
+	Handle CRLF in C code rather than in Lex code.
+	(YY_INPUT): New macro.
+	(no_cr_read): New function.
+
+	Scan UCNs, even though we don't fully handle them yet.
+	(convert_ucn_to_byte): New function.
+
+	Handle backslash-newline correctly in C code.
+	(SC_LINE_COMMENT, SC_YACC_COMMENT): New states.
+	(eols, blanks): Remove.  YY_USER_ACTION now counts newlines etc.;
+	all uses changed.
+	(tag, splice): New EREs.  Do not allow NUL or newline in tags.
+	Use {splice} wherever C allows backslash-newline.
+	YY_STEP after space, newline, vertical-tab.
+	("/*"): BEGIN SC_YACC_COMMENT, not yy_push_state (SC_COMMENT).
+
+	(letter, id): Don't assume ASCII; e.g., spell out a-z.
+
+	({int}, handle_action_dollar, handle_action_at): Check for integer
+	overflow.
+
+	(YY_STEP): Omit trailing semicolon, so that it's more like C.
+
+	(<SC_ESCAPED_STRING,SC_ESCAPED_CHARACTER>): Allow \0 and \00
+	as well as \000.  Check for UCHAR_MAX, not 255.
+	Allow \x with an arbitrary positive number of digits, as in C.
+	Check for overflow here.
+	Allow \? and UCNs, for compatibility with C.
+
+	(handle_symbol_code_dollar): Use quote_n slot 1 to avoid collision
+	with quote slot used by complain_at.
+
+	* tests/input.at: Add tests for backslash-newline, m4 quotes
+	in symbols, long literals, and funny escapes in strings.
+
+	* configure.ac (jm_PREREQ_MBSWIDTH): Add.
+	* lib/Makefile.am (libbison_a_SOURCES): Add mbswidth.h, mbswidth.c.
+	* lib/mbswidth.h, lib/mbswidth.c: New files, from GNU gettext.
+	* m4/Makefile.am (EXTRA_DIST): Add mbswidth.m4.
+	* m4/mbswidth.m4: New file, from GNU coreutils.
+
+	* doc/bison.texinfo (Grammar Outline): Document // comments.
+	(Symbols): Document that trigraphs have no special meaning in Bison,
+	nor is backslash-newline allowed.
+	(Actions): Document that trigraphs have no special meaning.
+
+	* src/location.h (LOCATION_COLUMNS, LOCATION_LINES): Remove;
+	no longer used.
+
+2002-11-02  Paul Eggert  <eggert@twinsun.com>
+
+	* src/reader.c: Don't include quote.h; not needed.
+	(get_merge_function): Reword warning to be consistent with
+	type clash diagnostic in grammar_current_rule_check.
+
+	* lib/quotearg.c (quotearg_buffer_restyled): Fix off-by-two
+	bug in trigraph handling.
+
+	* src/output.c (prepare_symbols): When printing token names,
+	escape "[" as "@<:@" and likewise for "]".
+
+	* src/system.h (errno): Remove declaration, as we are now
+	assuming C89 or better, and C89 guarantees errno.
+
+2002-10-30  Paul Eggert  <eggert@twinsun.com>
+
+	* lib/bitset_stats.c (bitset_stats_read, bitset_stats_write):
+	Check for close failures.
+	* src/files.h (xfclose): Return void, not int, since it always
+	returned zero.
+	* src/files.c (xfclose): Likewise.  Report I/O error if ferror
+	indicates one.
+	* src/output.c (output_skeleton): Use xfclose rather than fclose
+	and ferror.  xfclose now checks ferror.
+
+	* data/glr.c (YYLEFTMOST_STATE): Remove.
+	(yyreportTree): Use a stack-based leftmost state.  This avoids
+	our continuing battles with bogus warnings about initializers.
+
+2002-10-30  Akim Demaille  <akim@epita.fr>
+
+	* src/system.h: Don't use #ifdef/#ifndef on HAVE_ values, only
+	#if.
+
+2002-10-29  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>
+
+	* tests/glr-regr1.at: New test for reported regressions.
+	* tests/testsuite.at: Add glr-regr1.at test.
+	* tests/Makefile.am: Add glr-regr1.at test.
+
+2002-10-24  Paul Eggert  <eggert@twinsun.com>
+
+	Version 1.75a.
+
+	* tests/calc.at (_AT_DATA_CALC_Y): Remove unused strcat declaration.
+	* tests/cxx-type.at (_AT_TEST_GLR_CALC): Include stdlib.h, since
+	we use malloc.  Don't assume 'A' through 'Z' are contiguous.
+	Don't assume strdup exists; POSIX says its an XSI extension.
+	Check for buffer overflow on input.
+
+2002-10-24  Akim Demaille  <akim@epita.fr>
+
+	* src/output.c (output_skeleton): Don't disable M4sugar comments
+	too soon: it results in comments being expanded.
+	* data/yacc.c, data/glr.c, data/lalr1.cc: Do it right before the
+	first output.
+
+2002-10-24  Akim Demaille  <akim@epita.fr>
+
+	* data/yacc.c (m4_int_type): New.
+	* data/c.m4 (m4_int_type): Don't use yysigned_char, but `signed
+	char' as only yacc.c wants K&R portability.
+	* data/glr.c (yysigned_char): Remove.
+	* data/lalr1.cc: Rename the trailing b4_name as b4_parser_class_name.
+	Reported by Quoc Peyrot.
+
+2002-10-23  Paul Eggert  <eggert@twinsun.com>
+
+	* src/main.c (main): With --trace=time, report times even if a
+	non-fatal error occurs.  Formerly, the times were reported in some
+	such cases but not in others.
+	* src/reader.c (reader): Just return if a complaint has been issued,
+	instead of exiting, so that 'main' can report times.
+
+2002-10-22  Akim Demaille  <akim@epita.fr>
+
+	* src/system.h: Include sys/types.
+	Reported by Bert Deknuydt.
+
+2002-10-23  Paul Eggert  <eggert@twinsun.com>
+
+	* configure.ac (AC_PROG_LEX): Use instead of AM_PROG_LEX.
+	Suggested by Art Haas.
+
+2002-10-22  Paul Eggert  <eggert@twinsun.com>
+
+	* src/complain.c (exit) [! (STDC_HEADERS || _LIBC)]: Remove exit
+	decl; not needed any more.
+	* src/main.c (main): Use return to exit, undoing yesterday's change.
+	The last OS that we could find where this wouldn't work is
+	SunOS 3.5, and that's too old to worry about now.
+
+	* data/glr.c (struct yyltype): Define members even when not
+	doing locations.  This is more consistent with yacc.c, and it
+	works around the following bug reports:
+	http://lists.gnu.org/archive/html/bug-bison/2002-10/msg00106.html
+	http://lists.gnu.org/archive/html/bug-bison/2002-10/msg00111.html
+
+	* doc/bison.texinfo: Minor spelling and typographical fixes.  Use
+	@acronym consistently.  Standardize on "Yacc" instead of "YACC",
+	"Algol" instead of "ALGOL".  Give a bit more history about BNF.
+
+2002-10-22  Akim Demaille  <akim@epita.fr>
+
+	* data/README: New.
+
+2002-10-21  Paul Eggert  <eggert@twinsun.com>
+
+	Be consistent about 'bool'; the old code used an enum in one
+	module and an int in another, and this violates the C standard.
+	* m4/stdbool.m4: New file, from coreutils 4.5.3.
+	* configure.ac (AC_HEADER_STDBOOL): Add.
+	* m4/Makefile.am (EXTRA_DIST): Add stdbool.m4.
+	* src/muscle_tab.c (hash_compare_muscles): (a ? FALSE : TRUE) -> (! a)
+	* src/symtab.c (hash_compare_symbol_t): Likewise.
+	* src/system.h (bool, false, true): Use a definition consistent
+	with ../lib/hash.c.  All uses changed.
+
+	* src/complain.c (warning_issued): Renamed from warn_message_count,
+	so that we needn't worry about integer overflow (!).
+	Now of type bool.  All uses changed.
+	(complaint_issued): Renamed from complain_message_count; likewise.
+
+	* src/main.c (main): Use exit to exit with failure.
+
+	* src/complain.c (fatal_at, fatal): Use EXIT_FAILURE and EXIT_SUCCESS
+	rather than 1 and 0.
+	* src/main.c (main): Likewise.
+	* src/getargs.c (getargs): Likewise.
+	* src/reader.c (reader): Likewise.
+
+	* src/getarg.c (getargs): Remove duplicate code for
+	"Try `bison --help'".
+
+	* src/files.c (xfopen, xfclose): Use EXIT_FAILURE rather than 2.
+	What was that "2" for?
+
+	* src/complain.h (fatal, fatal_at): Add __attribute__((__noreturn__)).
+	* src/getargs.c (usage): Likewise.
+
+	* src/getargs.c (getargs): When there are too few operands, report
+	the last one.  When there are too many, report the first extra
+	one.  This is how diffutils does it.
+
+2002-10-20  Paul Eggert  <eggert@twinsun.com>
+
+	Remove K&R vestiges.
+	* configure.ac (AC_C_CONST, AM_C_PROTOTYPES): Remove.
+	* src/complain.c (VA_START): Remove.  Assume prototypes.
+	(vfprintf) [! (HAVE_VPRINTF || defined vfprintf)]: New macro.
+	(private_strerror, warn_at, warn, complain_at, complain, fatal_at,
+	fatal): Assume prototypes.
+	* src/complain.h: Assume prototypes.
+	* src/system.h (PARAMS): Remove.
+	Include <limits.h> unconditionally, since it's guaranteeed even
+	for a freestanding C89 compiler.
+	(SHRT_MIN, SHRT_MAX): Remove, since C89 guarantees them.
+	* src/vmsgetargs.c (getargs, cli_present, cli_get_value): Prototype.
+
+2002-10-20  Akim Demaille  <akim@epita.fr>
+
+	* src/muscle_tab.c (muscle_grow): Remove trailing debugging code.
+	* data/glr.c (YY_USER_FORMALS, YY_USER_ARGS): New.
+	(yyuserAction, yydoAction, yyglrReduce, yyresolveValue)
+	(yyresolveStates, yyresolveAction, yyresolveStack)
+	(yyprocessOneStack): Use them.
+	(yy_reduce_print): New.
+	* tests/calc.at (_AT_DATA_CALC_Y): Exercise %parse-param.
+
+2002-10-20  Akim Demaille  <akim@epita.fr>
+
+	* data/c.m4 (b4_c_ansi_args): Recognize functions with no
+	arguments and output `void'.
+	(b4_c_function): Rename as...
+	(b4_c_function_def): this.
+	(b4_c_function_decl, b4_c_ansi_function_def)
+	(b4_c_ansi_function_decl): New.
+	Change the interpretation of the arguments: before `int, foo', now
+	`int foo, foo'.
+	* data/yacc.c (yyparse): Prototype and define thanks to these.
+	Adjust b4_c_function_def uses.
+	* data/glr.c (yyparse): Likewise, but ANSI only.
+
+2002-10-20  Akim Demaille  <akim@epita.fr>
+
+	* src/output.c (prepare): Move the definition of `tokens_number',
+	`nterms_number', `undef_token_number', `user_token_number_max'
+	to...
+	(prepare_tokens): Here.
+	(prepare_tokens): Rename as...
+	(prepare_symbols): this.
+	(prepare): Move the definition of `rules_number' to...
+	(prepare_rules): here.
+	(prepare): Move the definition of `last', `final_state_number',
+	`states_number' to...
+	(prepare_states): here.
+	* data/yacc.c, data/lalr1.cc, data/glr.c: Normalize `>' into `<'.
+
+2002-10-20  Akim Demaille  <akim@epita.fr>
+
+	* src/tables.h, src/tables.c, src/output.c: Comment changes.
+
+2002-10-20  Akim Demaille  <akim@epita.fr>
+
+	* data/yacc.c, data/yacc.c (b4_location_if, b4_pure_if): Move to...
+	* data/c.m4: here.
+
+2002-10-20  Akim Demaille  <akim@epita.fr>
+
+	* src/output.c (prepare): Use MUSCLE_INSERT_STRING.
+	* src/muscle_tab.c (muscle_pair_list_grow): Rename `val as
+	`pair'.
+	(muscle_init): Move the `b4_ltype', `b4_maxdepth', `b4_initdepth',
+	`name' to...
+	* data/glr.c, data/lalr1.cc, data/yacc.c (b4_location_type)
+	(b4_stack_depth_init, b4_stack_depth_max, b4_parser_class_name):
+	These.
+
+2002-10-19  Paul Eggert  <eggert@twinsun.com>
+
+	Do not create a temporary file, as that involves security and
+	cleanup headaches.  Instead, use a pair of pipes.
+	Derived from a suggestion by Florian Krohm.
+	* lib/subpipe.c, lib/subpipe.h, m4/subpipe.m4: New files.
+	* lib/mkstemp.c, lib/readpipe.c, lib/tempname.c, m4/mkstemp.m4: Remove.
+	* configure.ac (UTILS_FUNC_MKSTEMP, jm_PREREQ_TEMPNAME): Remove.
+	(BISON_PREREQ_SUBPIPE): Add.
+	* lib/Makefile.am (libbison_a_SOURCES): Remove readpipe.c.
+	Add subpipe.h, subpipe.c.
+	* m4/Makefile.am (EXTRA_DIST): Remove mkstemp.m4.  Add subpipe.m4.
+	* po/POTFILES.in: Add lib/subpipe.c.
+	* src/output.c: Include "subpipe.h".
+	(m4_invoke): Remove decl.
+	(scan_skel): New decl.
+	(output_skeleton): Use pipe rather than temporary file for m4 input.
+	Check that m4sugar.m4 is readable, to avoid deadlock.
+	Check for pipe I/O error.
+	* src/scan-skel.l (readpipe): Remove decl.
+	(scan_skel): New function, to be used in place of m4_invoke.
+	Read from stream rather than file.
+
+	* lib/timevar.c (TICKS_TO_MSEC, CLOCKS_TO_MSEC): Do not cast to
+	float, as this generates a warning on Solaris 8 + GCC 3.2 with
+	--enable-gcc-warnings.  Instead, divide into 1.0 rather than 1;
+	this generates a more-accurate value anyway.
+
+	* lib/timevar.c (timervar_accumulate): Rename locals to
+	avoid confusion with similarly-named more-global.
+	* src/muscle_tab.c (muscle_pair_list_grow): Likewise.
+
+	* src/output.c (prepare): Use xstrdup to convert char const *
+	to char *, to avoid GCC warning.
+
+2002-10-19  Akim Demaille  <akim@epita.fr>
+
+	* tests/calc.at (_AT_DATA_CALC_Y): Define VAL, LOC, LEX_FORMALS,
+	LEX_PRE_FORMALS, LEX_ARGS, LEX_PRE_ARGS, USE_LEX_ARGS.
+	Use them to have `calc.y' ready for %pure-parser.
+	* data/yacc.c (YYLEX): Pass a yylex return type to
+	b4_c_function_call.
+
+2002-10-19  Akim Demaille  <akim@epita.fr>
+
+	Prototype support of %lex-param and %parse-param.
+
+	* src/parse-gram.y: Add the definition of the %lex-param and
+	%parse-param tokens, plus their rules.
+	Drop the `_' version of %glr-parser.
+	Add the "," token.
+	* src/scan-gram.l (INITIAL): Scan them.
+	* src/muscle_tab.c: Comment changes.
+	(muscle_insert, muscle_find): Rename `pair' as `probe'.
+	* src/muscle_tab.h (MUSCLE_INSERT_PREFIX): Remove unused.
+	(muscle_entry_s): The `value' member is no longer const.
+	Adjust all dependencies.
+	* src/muscle_tab.c (muscle_init): Adjust: use
+	MUSCLE_INSERT_STRING.
+	Initialize the obstack earlier.
+	* src/muscle_tab.h, src/muscle_tab.c (muscle_grow)
+	(muscle_pair_list_grow): New.
+	* data/c.m4 (b4_c_function_call, b4_c_args): New.
+	* data/yacc.c (YYLEX): Use b4_c_function_call to honor %lex-param.
+	* tests/calc.at: Use %locations, not --locations.
+	(AT_CHECK_CALC_GLR): Use %glr-parser, not %glr_parser.
+
+2002-10-19  Akim Demaille  <akim@epita.fr>
+
+	* src/getargs.c (usage): Take status as argument and exit
+	accordingly.
+	Report the traditional `Try ... --help' message when status != 0.
+	(usage, version): Don't take a FILE * as arg, it is pointless.
+	(getargs): When there is an incorrect number of arguments, make it
+	an error, and report it GNUlically thanks to `usage ()'.
+
+2002-10-18  Paul Eggert  <eggert@twinsun.com>
+
+	* data/glr.c (yyreportParseError): Don't assume that sprintf
+	yields the length of the printed string, as this is not true
+	on SunOS 4.1.4.  Reported by Peter Klein.
+
+	* tests/calc.at (_AT_DATA_CALC_Y): #undef memcmp and realloc.
+	* tests/conflicts.at (%nonassoc and eof): Likewise.
+	Fixes SunOS 4.1.4 test failure reported by Peter Klein.
+
+2002-10-17  Akim Demaille  <akim@epita.fr>
+
+	* src/getargs.h (trace_e): Add trace_scan, and trace_parse.
+	* src/getargs.c (trace_types, trace_args): Adjust.
+	* src/reader.c (grammar_current_rule_prec_set)
+	(grammar_current_rule_dprec_set, grammar_current_rule_merge_set):
+	Standardize error messages.
+	And s/@prec/%prec/!
+	(reader): Use trace_flag to enable scanner/parser debugging,
+	instead of an adhoc scheme.
+	* src/scan-gram.l: Remove trailing debugging code.
+
+2002-10-16  Paul Eggert  <eggert@twinsun.com>
+
+	* src/muscle_tab.h (MUSCLE_TAB_H_): Was misspelled as
+	MUSCLE_TAB_H.
+
+	* NEWS: Officially drop support for building Bison with K&R C,
+	since it didn't work anyway and it's not worth worrying about.
+	* Makefile.maint (wget_files): Remove ansi2knr.c.
+	(ansi2knr.c-url_prefix): Remove.
+	* lib/.cvsignore: Remove ansi2knr, ansi2knr.*.
+	* lib/Makefile.am (AUTOMAKE_OPTIONS): Remove.
+	* src/Makefile.am (AUTOMAKE_OPTIONS): Remove.
+
+2002-10-15  Paul Eggert  <eggert@twinsun.com>
+
+	Stop using the "enum_" trick for K&R-style function definitions;
+	it confused me, and I was the author!  Instead, assume that people
+	who want to use K&R C compilers (when using these modules in GCC,
+	perhaps?) will run ansi2knr.
+
+	* lib/bbitset.h: (enum_bitset_ops, enum_bitset_type): Remove.
+	All uses of "enum_" changed to "enum ".
+	* lib/ebitset.c (enum_ebitset_find_mode): Likewise.
+	* lib/lbitset.c (enum_lbitset_find_mode): Likewise.
+
+	* lib/abitset.c (abitset_and, abitset_and_cmp, abitset_and_or,
+	abitset_and_or_cmp, abitset_andn, abitset_andn_cmp,
+	abitset_andn_or, abitset_andn_or_cmp, abitset_bytes, abitset_copy,
+	abitset_copy1, abitset_disjoint_p, abitset_empty_p,
+	abitset_equal_p, abitset_init, abitset_list, abitset_list_reverse,
+	abitset_not, abitset_ones, abitset_or, abitset_or_and,
+	abitset_or_and_cmp, abitset_or_cmp, abitset_reset, abitset_set,
+	abitset_size, abitset_small_list, abitset_subset_p, abitset_test,
+	abitset_unused_clear, abitset_xor, abitset_xor_cmp, abitset_zero):
+	Use function prototypes; this removes the need for declaring
+	static functions simply to provide their prototypes.
+	* lib/bitset.c (bitset_alloc, bitset_and_or_, bitset_and_or_cmp_,
+	bitset_andn_or_, bitset_andn_or_cmp_, bitset_bytes, bitset_copy_,
+	bitset_count_, bitset_create, bitset_dump, bitset_first,
+	bitset_free, bitset_init, bitset_last, bitset_next,
+	bitset_obstack_alloc, bitset_obstack_free, bitset_only_set_p,
+	bitset_op4_cmp, bitset_or_and_, bitset_or_and_cmp_, bitset_prev,
+	bitset_print, bitset_release_memory, bitset_toggle_,
+	bitset_type_choose, bitset_type_get, bitset_type_name_get,
+	debug_bitset): Likewise.
+	* lib/bitset.h (bitset_set, bitset_reset, bitset_test): Likewise.
+	* lib/bitset_stats.c (bitset_log_histogram_print,
+	bitset_percent_histogram_print, bitset_stats_and,
+	bitset_stats_and_cmp, bitset_stats_and_or,
+	bitset_stats_and_or_cmp, bitset_stats_andn, bitset_stats_andn_cmp,
+	bitset_stats_andn_or, bitset_stats_andn_or_cmp, bitset_stats_copy,
+	bitset_stats_count, bitset_stats_disable, bitset_stats_disjoint_p,
+	bitset_stats_dump, bitset_stats_empty_p, bitset_stats_enable,
+	bitset_stats_equal_p, bitset_stats_free, bitset_stats_init,
+	bitset_stats_list, bitset_stats_list_reverse, bitset_stats_not,
+	bitset_stats_ones, bitset_stats_or, bitset_stats_or_and,
+	bitset_stats_or_and_cmp, bitset_stats_or_cmp, bitset_stats_print,
+	bitset_stats_print_1, bitset_stats_read, bitset_stats_reset,
+	bitset_stats_set, bitset_stats_size, bitset_stats_subset_p,
+	bitset_stats_test, bitset_stats_toggle, bitset_stats_type_get,
+	bitset_stats_write, bitset_stats_xor, bitset_stats_xor_cmp,
+	bitset_stats_zero): Likewise.
+	* lib/bitsetv.c (bitsetv_alloc, bitsetv_create, bitsetv_free,
+	bitsetv_zero, bitsetv_ones, bitsetv_transitive_closure,
+	bitsetv_dump, debug_bitsetv): Likewise.
+	* lib/ebitset.c (ebitset_and, ebitset_and_cmp, ebitset_andn,
+	ebitset_andn_cmp, ebitset_bytes, ebitset_copy, ebitset_copy_,
+	ebitset_copy_cmp, ebitset_disjoint_p, ebitset_elt_add,
+	ebitset_elt_alloc, ebitset_elt_calloc, ebitset_elt_find,
+	ebitset_elt_free, ebitset_elt_last, ebitset_elt_remove,
+	ebitset_elt_zero_p, ebitset_elts_grow, ebitset_empty_p,
+	ebitset_equal_p, ebitset_free, ebitset_init, ebitset_list,
+	ebitset_list_reverse, ebitset_not, ebitset_ones, ebitset_op3_cmp,
+	ebitset_or, ebitset_or_cmp, ebitset_release_memory, ebitset_reset,
+	ebitset_set, ebitset_size, ebitset_subset_p, ebitset_test,
+	ebitset_weed, ebitset_xor, ebitset_xor_cmp, ebitset_zero):
+	Likewise.
+	* lib/lbitset.c (debug_lbitset, lbitset_and, lbitset_and_cmp,
+	lbitset_andn, lbitset_andn_cmp, lbitset_bytes, lbitset_copy,
+	lbitset_copy_cmp, lbitset_disjoint_p, lbitset_elt_alloc,
+	lbitset_elt_calloc, lbitset_elt_find, lbitset_elt_free,
+	lbitset_elt_link, lbitset_elt_unlink, lbitset_elt_zero_p,
+	lbitset_empty_p, lbitset_equal_p, lbitset_free, lbitset_init,
+	lbitset_list, lbitset_list_reverse, lbitset_not, lbitset_ones,
+	lbitset_op3_cmp, lbitset_or, lbitset_or_cmp, lbitset_prune,
+	lbitset_release_memory, lbitset_reset, lbitset_set, lbitset_size,
+	lbitset_subset_p, lbitset_test, lbitset_weed, lbitset_xor,
+	lbitset_xor_cmp, lbitset_zero): Likewise.
+
+2002-10-14  Akim Demaille  <akim@epita.fr>
+
+	Version 1.75.
+
+2002-10-14  Akim Demaille  <akim@epita.fr>
+
+	* tests/Makefile.am (maintainer-check-posix): New.
+
+2002-10-14  Akim Demaille  <akim@epita.fr>
+
+	* data/glr.c [YYDEBUG] (YYLEFTMOST_STATE): Initialize the yyloc
+	member.
+
+2002-10-14  Akim Demaille  <akim@epita.fr>
+
+	* src/tables.c (table_ninf_remap): base -> tab.
+	Reported by Matt Rosing.
+
+2002-10-14  Paul Eggert  <eggert@twinsun.com>
+
+	* tests/action.at, tests/calc.at, tests/conflicts.at,
+	tests/cxx-type.at, tests/headers.at, tests/input.at,
+	tests/regression.at, tests/synclines.at, tests/torture.at:
+	Say "bison -o foo.c foo.y", not "bison foo.y -o foo.c",
+	so that the tests still work even if POSIXLY_CORRECT is set.
+	* doc/bison.texinfo (Rpcalc Compile, Invocation): Likewise.
+
+	* data/c.m4 (b4_int_type): Use yysigned_char instead of signed char,
+	for portability to K&R hosts.  Fix typo: signed char is guaranteed
+	only to 127, not to 128.
+	* data/glr.c (yysigned_char): New type.
+	* data/yacc.c (yysigned_char): Likewise.
+	* tests/regression.at (Web2c Actions): signed char -> yysigned_char.
+
+2002-10-13  Paul Eggert  <eggert@twinsun.com>
+
+	* data/yacc.c (yyparse): Rewrite to avoid "comparison is always
+	true due to limited range of data type" warning from GCC.
+
+	* data/c.m4 (b4_token_defines): Protect against double-inclusion
+	by wrapping enum yytokentype's definition inside #ifndef
+	YYTOKENTYPE.  This undoes a bug I introduced on 2002-10-12.
+
+2002-10-13  Akim Demaille  <akim@epita.fr>
+
+	* data/glr.c (yyglrShiftDefer, yyaddDeferredAction, yydoAction):
+	Un yy- yyrhs to avoid the name clash with the global YYRHS.
+
+2002-10-13  Akim Demaille  <akim@epita.fr>
+
+	* Makefile.maint: Update from Autoconf 2.54.
+	* m4/strerror_r.m4 (AC_FUNC_STRERROR_R): Remove, shipped with 2.54.
+
+2002-10-13  Akim Demaille  <akim@epita.fr>
+
+	* src/print.c (print_state): Separate the list of solved conflicts
+	from the other items.
+	* tests/conflicts.at (Resolved SR Conflicts): Adjust.
+
+2002-10-13  Akim Demaille  <akim@epita.fr>
+
+	Let nondeterministic skeletons be usable with deterministic
+	tables.
+
+	With the patch, GAWK compiled by GCC without -O2 passes its test
+	suite using a GLR parser driven by LALR tables.  It fails with -O2
+	because `struct stat' gives two different answers on my machine:
+	88 (definition of an auto var) and later 96 (memset on this var).
+	Hence the stack is badly corrumpted.  The headers inclusion is to
+	blame: if I move the awk.h inclusion before GLR's system header
+	inclusion, the two struct stat have the same size.
+
+	* src/tables.c (pack_table): Always create conflict_table.
+	(token_actions): Always create conflict_list.
+	* data/glr.c (YYFLAG): Remove, unused.
+
+2002-10-13  Akim Demaille  <akim@epita.fr>
+
+	* configure.ac (AC_GNU_SOURCE): Use it instead of hand written code.
+	(O0FLAGS): New.
+	(VALGRIND, GXX): New.
+	* tests/atlocal.in (CFLAGS): Use O0FLAGS.
+	* tests/bison.in: Run $PREBISON a pre-command.
+	* tests/Makefile.am (maintainer-check, maintainer-check-valgrind)
+	(maintainer-check-g++): New.
+	* Makefile.am (maintainer-check): New.
+
+2002-10-13  Akim Demaille  <akim@epita.fr>
+
+	* data/glr.c: Formatting changes.
+	Tweak some trace messages to match yacc.c's.
+
+2002-10-13  Akim Demaille  <akim@epita.fr>
+
+	GLR parsers sometimes raise parse errors instead of performing the
+	default reduction.
+	Reported by Charles-Henry de Boysson.
+
+	* tests/calc.at (_AT_CHECK_CALC, _AT_CHECK_CALC_ERROR): Don't
+	check the length of the traces when %glr.
+	(_AT_CHECK_CALC_ERROR): Also skip `^Stack' lines, coming from
+	GLR's traces.
+	(AT_CHECK_CALC_LALR, AT_CHECK_CALC_GLR): New.
+	Test GLR parsers.
+	* data/glr.c (YYLEFTMOST_STATE): Fix its value.
+	(yyltype): Remove the yy prefix from the member names.
+	(yytable): Complete its comment.
+	(yygetLRActions): Map error action number from YYTABLE from
+	YYTABLE_NINF to 0.
+	(yyisErrorAction): No longer compare YYACTION to YYPACT_NINF
+	(which was a bug: it should have been YYTABEL_NINF, and yet it was
+	not satisfying as we could compare an YYACTION computed from
+	YYDEFACT to YYTABLE_NINF although they are unrelated): 0 is the
+	only value for error actions.
+	(yyreportParseError): In verbose parse error messages, don't issue
+	`error' in the list of expected tokens.
+	* data/yacc.c (yyparse) <yybackup>: Rewrite the decoding of the
+	next action to perform to match glr.c's decoding.
+	(yytable): Complete its comment.
+
+2002-10-13  Paul Eggert  <eggert@twinsun.com>
+
+	Fix problem reported by Henrik Grubbstroem in
+	<http://lists.gnu.org/archive/html/bug-bison/2002-10/msg00098.html>:
+	"nonterm: { $$ = 123; } { $$ = $1; };" was wrongly rejected,
+	because the Bison parser reads the second action before reducing
+	the first one.
+	* src/scan-gram.l (rule_length): New static var.
+	Use it to keep track of the rule length in the scanner, since
+	we can't expect the parser to be in lock-step sync with the scanner.
+	(handle_action_dollar, handle_action_at): Use this var.
+	* tests/actions.at (Exotic Dollars): Test for the problem.
+
+2002-10-12  Paul Eggert  <eggert@twinsun.com>
+
+	* lib/timevar.c [! IN_GCC && HAVE_SYS_TIME_H]: Include <sys/time.h>.
+	* m4/timevar.m4 (BISON_PREREQ_TIMEVAR): Check for <sys/time.h>.
+	Include <sys/time.h> when checking for clock_t and struct tms.
+	Use same include order as source.
+	This is for the SunOS 4.1.4 porting bug reported by Peter Klein in
+	<http://lists.gnu.org/archive/html/bug-bison/2002-10/msg00016.html>.
+
+	* lib/timevar.c: Update copyright date and clarify comments.
+	(get_time) [IN_GCC]: Keep the GCC version for reference.
+
+	* lib/timevar.c, lib/timevar.h, lib/timevar.def: Import
+	GCC version as of today, then merge Bison's changes.
+	Change "GCC" to "Bison" in copyright notice.  timevar.def's
+	author is Akim, so change that too.
+
+	* src/reader.c (grammar_current_rule_check):
+	Don't worry about the default action if $$ is untyped.
+	Prevents bogus warnings reported by Jim Gifford in
+	<http://lists.gnu.org/archive/html/bug-bison/2002-10/msg00015.html>.
+
+	* data/c.m4 (b4_token_enum): Do not define YYTOKENTYPE.
+	* data/glr.c, data/lalr1.cc, data/yacc.c:
+	Output token definitions before the first part of user declarations.
+	Fixes compatibility problem reported by Jim Gifford for kbd in
+	<http://lists.gnu.org/archive/html/bug-bison/2002-10/msg00014.html>.
+
+2002-10-11  Paul Eggert  <eggert@twinsun.com>
+
+	* data/yacc.c (yyreport_parse_error): Remove, putting its body into...
+	(yyparse): here.  This undoes some of the 2002-07-25 change.
+	Compatibility problem reported by Ralf S. Engelschall with
+	OSSP cfg <http://www.ossp.org/pkg/lib/cfg/>.
+
+2002-10-11  Akim Demaille  <akim@epita.fr>
+
+	* tests/regression.at Characters Escapes): New.
+	* src/scan-gram.l (SC_ESCAPED_CHARACTER): Accept \' in strings and
+	characters.
+	Reported by Jan Nieuwenhuizen.
+
+2002-10-11  Akim Demaille  <akim@epita.fr>
+
+	* po/id.po: New.
+
+2002-10-10  Paul Eggert  <eggert@twinsun.com>
+
+	Portability fixes for bitsets; this also avoids several GCC
+	warnings.
+
+	* lib/abitset.c: Include <stddef.h>, for offsetof.
+	* lib/lbitset.c: Likewise.
+
+	* lib/abitset.c (abitset_bytes): Return a size that is aligned
+	properly for vectors of objects.  Do not assume that adding a
+	header size to a multiple of a word size yields a value that is
+	properly aligned for the whole union.
+	* lib/bitsetv.c (bitsetv_alloc): Likewise.
+
+	* lib/bitset_stats.c (bitset_stats_bytes): Adjust to new,
+	unique names for structures.
+	* lib/ebitset.c (ebitset_bytes): Likewise.
+	* lib/lbitset.c (lbitset_bytes): Likewise.
+
+	* lib/abitset.c (abitset_ones, abitset_zero, abitset_empty_p,
+	abitset_copy1, abitset_not, abitset_equal_p, abitset_subset_p,
+	abitset_disjoint_p, abitset_and, abitset_and_cmp, abitset_andn,
+	abitset_andn_cmp, abitset_or, abitset_or_cmp, abitset_xor,
+	abitset_xor_cmp, abitset_and_or, abitset_and_or_cmp,
+	abitset_andn_or, abitset_andn_or_cmp, abitset_or_and,
+	abitset_or_and_cmp, abitset_copy): Supply prototype decls,
+	to improve the type-checking that GCC can do.
+	* lib/bitset.c (bitset_op4_cmp): Likewise.
+	* lib/bitset_stats.c (bitset_stats_count,
+	bitset_stats_empty_p, bitset_stats_ones, bitset_stats_zero,
+	bitset_stats_copy, bitset_stats_disjoint_p,
+	bitset_stats_equal_p, bitset_stats_not, bitset_stats_subset_p,
+	bitset_stats_and, bitset_stats_and_cmp, bitset_stats_andn,
+	bitset_stats_andn_cmp, bitset_stats_or, bitset_stats_or_cmp,
+	bitset_stats_xor, bitset_stats_xor_cmp, bitset_stats_and_or,
+	bitset_stats_and_or_cmp, bitset_stats_andn_or,
+	bitset_stats_andn_or_cmp, bitset_stats_or_and,
+	bitset_stats_or_and_cmp): Likewise.
+	* lib/lbitset.c (lbitset_and, lbitset_and_cmp, lbitset_andn,
+	lbitset_andn_cmp, lbitset_or, lbitset_or_cmp, lbitset_xor,
+	lbitset_xor_cmp, lbitset_empty_p, lbitset_ones, lbitset_not,
+	lbitset_subset_p, lbitset_disjoint_p, debug_lbitset): Likewise.
+
+	* lib/abitset.h: Include bitset.h, not bbitset.h.
+	* lib/ebitset.h: Likewise.
+	* lib/lbitset.h: Likewise.
+
+	* lib/bbitset.h: (enum_bitset_ops, enum_bitset_type): New types.
+	All instances of parameters of type enum bitset_opts are now of
+	type enum_bitset_opts, to conform to the C Standard, and similarly
+	for enum_bitset_type.
+	* lib/ebitset.c (enum_ebitset_find_mode): Likewise.
+	* lib/lbitset.c (enum_lbitset_find_mode): Likewise.
+
+	Do not use "struct bitset_struct" to mean different things in
+	different modules.  Not only is this confusing, it violates
+	the C Standard, which requires that structure types in different
+	modules must be compatible if one is to be passed to the other.
+	* lib/bbitset.h (bitset): Now points to a union, not to a struct.
+	All instances of "struct bitset_struct *" replaced with "bitset".
+	* lib/bitset.h (struct bitset_struct): Remove, replacing with....
+	(union bitset_union, struct abitset_struct, struct ebitset_struct,
+	struct lbitset_struct, struct bitset_stats_struct): New types.
+	All uses of struct bitset_struct changed to union bitset_union,
+	etc.
+	* lib/abitset.c (struct abitset_struct, abitset,
+	struct bitset_struct): Remove.
+	* lib/bitset_stats.c (struct bitset_stats_struct, bitset_stats,
+	struct bitset_struct): Remove.
+	* lib/ebitset.c (struct ebitset_struct, ebitset, struct
+	bitset_struct): Remove.
+	* lib/lbitset.c (struct lbitset_struct, lbitset, bitset_struct):
+	Likewise.
+
+	Do not call a function of type T using a call that assumes the
+	function is of a different type U.  Standard C requires that a
+	function must be called with a type that is compatible with its
+	definition.
+	* lib/bbitset.h (bitset_and_or_, bitset_andn_or_, bitset_or_and_):
+	New decls.
+	* lib/bitset.c (bitset_and_or_, bitset_andn_or_, bitset_or_and_):
+	New functions.
+	* lib/ebitset.c (PFV): Remove.
+	* lib/lbitset.c (PFV): Likewise.
+	* lib/ebitset.c (ebitset_and, ebitset_andn, ebitset_or,
+	ebitset_xor, ebitset_copy, ebitset_ones, ebitset_empty_p): New
+	decls.
+	(ebitset_and, ebitset_andn, ebitset_or, ebitset_xor): New functions.
+	(ebitset_vtable): Use them.
+	* lib/lbitset.c (lbitset_and, lbitset_andn, lbitset_or,
+	lbitset_xor): New functions.
+	(lbitset_vtable): Use them.
+
+	* lib/bitset.h (bitset_next, bitset_prev, bitset_only_set_p):
+	Declare.
+
+	* lib/bitsetv.c (bitsetv_alloc): Add a cast to (void *) to avoid a
+	GCC warning.
+	* lib/lbitset.c (LBITSET_CURRENT1): Likewise.
+	Use offsetof, for simplicity.
+
+2002-10-06  Paul Eggert  <eggert@twinsun.com>
+
+	* lib/bitset.h (bitset_reset): Do not assume that bitset_word is
+	the same width as int.  This reapplies a hunk of the 2002-08-12 patch
+	<http://lists.gnu.org/archive/html/bison-patches/2002-08/msg00007.html>,
+	which was inadvertently undone by the 2002-09-30 patch.
+	* lib/lbitset.c (debug_lbitset): Do not assume that bitset_word is
+	the same width as int.
+
+2002-10-04  Paul Eggert  <eggert@twinsun.com>
+
+	Version 1.50.
+
+	* configure.ac (AC_INIT), NEWS: Increment version number.
+
+	* doc/bison.texinfo: Minor spelling, grammar, and white space
+	fixes.
+	(Symbols): Mention that any negative value returned from yylex
+	signifies end-of-input.  Warn about negative chars.  Mention
+	the portable Standard C character set.
+
+	The GNU coding standard says CFLAGS and YFLAGS are reserved
+	for the installer to set.
+	* lib/Makefile.am (AM_CFLAGS): Renamed from CFLAGS.
+	* src/Makefile.am (AM_CFLAGS): Likewise.
+	(AM_YFLAGS): Renamed from YFLAGS.
+
+	Fix some MAX and MIN problems.
+	* src/gram.h (ITEM_NUMBER_MIN): MIN_MAX -> INT_MIN.
+	* src/lalr.h (GOTO_NUMBER_MAX): INT_MAX -> SHRT_MAX.
+	* src/symtab.h (SYMBOL_NUMBER_MAX): New macro.
+	* src/reader.c (reader): Use it.
+
+	* tests/regression.at (Braces parsing): Use grep, not fgrep, as
+	POSIX 1003.1-2001 has removed fgrep.
+
+2002-10-04  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>
+
+	* lib/bbitset.h (BITSET_WINDEX_MAX): Redefine so that it cannot be
+	interpreted as signed.
+	* lib/ebitset.c (ebitset_list): Fix bug.
+
+2002-10-01  Paul Eggert  <eggert@twinsun.com>
+
+	More fixes for 64-bit hosts and large bitsets.
+
+	* lib/abitset.c (struct abitset_struct.n_bits, abitset_small_list,
+	abitset_size, abitset_list, abitset_list_reverse, abitset_list):
+	Use bitset_bindex, not int or unsigned int or size_t, to count bits.
+	* lib/bbitset.h (struct bitset_vtable.size, struct bitset_vtable.count,
+	struct bitset_vtable.list, struct bitset_vtable.list_reverse,
+	bitset_count_, bitset_next, bitset_prev, bitset_first, bitset_last,
+	bitset_count_): Likewise.
+	* lib/bitset.h (bitset_iterator.num, bitset_iterator.i,
+	bitset_first, bitset_last): Likewise.
+	* lib/bitset_stats.c (bitset_stats_size, bitset_stats_list,
+	bitset_stats_list_reverse, bitset_stats_size,
+	bitset_stats_count, bitset_stats_list, bitset_stat_list_reverse):
+	Likewise.
+	* lib/bitsetv-print.c (bitsetv_matrix_dump): Likewise.
+	* lib/bitsetv.c (bitsetv_alloc, bitsetv_create, bitsetv_free,
+	bitsetv_zero, bitsetv_ones, bitsetv_transitive_closure,
+	bitsetv_reflexive_transitive_closure): Likewise.
+	* lib/bitsetv.h (bitsetv_alloc, bitsetv_create): Likewise.
+	* lib/ebitset.c (ebitset_size, ebitset_list, ebitset_list_reverse):
+	Likewise.
+	* lib/lbitset.c (lbitset_size, lbitset_list, lbitset_list_merge):
+	Likewise.
+
+	* lib/abitset.c (abitset_ones, abitset_zero, abitset_bytes):
+	Use size_t, not unsigned int, to count bytes.
+	* lib/abitset.h (abitset_bytes): Likewise.
+	* lib/bitset.c (bitset_bytes, bitset_alloc, bitset_obstack_alloc):
+	Likewise.
+	* lib/bitset.h (bitset_bytes): Likewise.
+	* lib/bitset_stats.c (bitset_stats_bytes, bitset_stats_init): Likewise.
+	* lib/bitset_stats.h (bitset_stats_bytes): Likewise.
+	* lib/bitsetv.c (bitsetv_alloc): Likewise.
+	* lib/ebitset.c (ebitset_bytes): Likewise.
+	* lib/ebitset.h (ebitset_bytes): Likewise.
+	* lib/lbitset.c (lbitset_bytes): Likewise.
+	* lib/lbitset.h (lbitset_bytes): Likewise.
+
+	* lib/abitset.c (abitset_empty_p, abitset_not, abitset_equal_p,
+	abitset_subset_p, abitset_disjoint_p, abitset_and,
+	abitset_and_cmp, abitset_andn, abitset_andn_cmp, abitset_or,
+	abitset_or_cmp, abitset_xor, abitset_xor_cmp, abitset_and_or,
+	abitset_and_or_cmp, abitset_andn_or, abitset_andn_or_cmp,
+	abitset_or_and, abitset_or_and_cmp):
+	Use bitset_windex instead of unsigned int.
+	* lib/bitsetv.c (bitsetv_dump, debug_bitsetv): Likewise.
+	* lib/ebitset.c (struct ebitset_struct.size, ebitset_elts_grow,
+	ebitset_elt_add, ebitset_elt_remove, ebitset_weed,
+	ebitset_elt_find, ebitset_list_reverse, ebitset_list, ebitset_init):
+	Likewise.
+	* lib/lbitset.c (lbitset_ones, lbitset_not): Likewise.
+
+	* lib/bitset.c (bitset_print):
+	Use proper printf formats for widths of integer types.
+	* lib/bitset_stats.c (bitset_percent_histogram_print,
+	bitset_log_histogram_print, bitset_stats_print_1): Likewise.
+	* lib/bitsetv-print.c (bitsetv_matrix_dump): Likewise.
+	* lib/bitsetv.c (bitsetv_dump, debug_bitsetv): Likewise.
+	* lib/lbitset.c (lbitset_bytes): Likewise.
+
+	* lib/bbitset.h (BITSET_BINDEX_MAX, BITSET_WINDEX_MAX,
+	BITSET_SIZE_MAX): New macros.
+	(BITSET_INDEX_MAX): Remove.  It wasn't right, since it assumed that
+	sizeof (bitset_word) == sizeof (bitset_windex).  All uses changed
+	to BITSET_WINDEX_MAX.
+
+	* lib/bitset.c (bitset_next, bitset_prev, bitset_first,
+	bitset_last): Return BITSET_BINDEX_MAX (not -1) for no value,
+	since we now return the bitset_bindex type (not int).
+
+	* lib/bitsetv.c (bitsetv_alloc): Check for arithmetic overflow
+	when computing sizes.
+	* lib/ebitset.c (ebitset_elts_grow): Likewise.
+
+	* lib/lbitset.c (lbitset_elt_find): Simplify windex calculation
+	and avoid cast to unsigned.
+
+2002-09-30  Akim Demaille  <akim@epita.fr>
+
+	* lib/abitset.c, lib/bbitset.h, lib/bitset.c, lib/bitset.h,
+	* lib/bitset_stats.c, lib/bitsetv.c, lib/ebitset.c, lib/lbitset.c:
+	Updates from Michael Hayes.
+
+2002-09-30  Art Haas  <ahaas@neosoft.com>
+
+	* configure.ac: Update AC_OUTPUT and AM_CONFIG_HEADER
+	invocations.
+	* tests/cxx-type.at (declarator): Don't rely on NDEBUG being not
+	defined.
+
+2002-09-27  Akim Demaille  <akim@epita.fr>
+
+	Version 1.49c.
+
+2002-09-27  Akim Demaille  <akim@epita.fr>
+
+	* configure.ac (AM_INIT_AUTOMAKE): We _need_ 1.7.
+	(Because of AC_LIBSOURCE).
+
+2002-09-27  Akim Demaille  <akim@epita.fr>
+
+	Playing with Autoscan.
+
+	* configure.ac: Remove the old LIBOBJ tweaks.
+	(AC_REPLACE_FUNCS): Add strrchr and strtol.
+	* lib/strrchr.c: New.
+	* lib/strtol.c: New, from the Coreutils 4.5.1.
+
+2002-09-27  Akim Demaille  <akim@epita.fr>
+
+	Playing with Autoscan.
+
+	* m4/prereq.m4 (jm_PREREQ_ARGMATCH, jm_FUNC_ARGMATCH): New.
+	* lib/Makefile.am (libbison_a_SOURCES): No longer include
+	argmatch.c and argmatch.h, since they are AC_LIBSOURCE'd.
+	* lib/strcasecmp.c, lib/strncasecmp.c, lib/memcmp.c: New, from the
+	Coreutils 4.5.1.
+
+2002-09-24  Akim Demaille  <akim@epita.fr>
+
+	* doc/bison.texinfo (Stack Overflow): xref to Recursion.
+	(Frequently Asked Questions, Parser Stack Overflow): New.
+
+2002-09-13  Akim Demaille  <akim@epita.fr>
+
+	Playing with autoscan.
+
+	* src/reader.c (get_merge_function): Use xstrdup, not strdup.
+	* src/files.c (skeleton_find): Remove, unused.
+	* m4/memcmp.m4: New, from the Coreutils 4.5.1.
+	* m4/prereq.m4 (jm_PREREQ_QUOTEARG): Run jm_FUNC_MEMCMP.
+
+2002-09-13  Akim Demaille  <akim@epita.fr>
+
+	* configure.ac (AM_INIT_AUTOMAKE): Require Automake 1.6.3.
+	* Makefile.am (AUTOMAKE_OPTIONS): Don't.
+
+2002-09-13  Akim Demaille  <akim@epita.fr>
+
+	* configure.ac: Require 2.54.
+	s/jm_FUNC_MALLOC/AC_FUNC_MALLOC/.
+	s/jm_FUNC_REALLOC/AC_FUNC_REALLOC/.
+	* m4/c-bs-a.m4, m4/malloc.m4, m4/mbstate_t.m4, m4/realloc.m4:
+	Remove, provided by Autoconf macros.
+
+2002-09-12  Akim Demaille  <akim@epita.fr>
+
+	* m4/prereq.m4: Update, from Coreutils 4.5.1.
+
+2002-09-12  Akim Demaille  <akim@epita.fr>
+
+	* m4/prereq.m4: Update, from Fileutils 4.1.5.
+	* configure.ac (jm_PREREQ_TEMPNAME): Invoke it.
+	Reported by Martin Mokrejs.
+
+2002-09-10  Akim Demaille  <akim@epita.fr>
+
+	* src/parse-gram.y: Associate a human readable string to each
+	token type.
+	* tests/regression.at (Invalid inputs): Adjust.
+
+2002-09-10  Gary V. Vaughan  <gary@gnu.org>
+
+	* tests/Makefile.am ($(srcdir)/package.m4): Bison now ships
+	with an Autoconf-2.5x style configure.ac.
+
+2002-09-06  Paul Eggert  <eggert@twinsun.com>
+
+	* doc/bison.texinfo (Conditions): Make explicit that the GPL
+	exception applies only to yacc.c.  This is a modification of a
+	patch originally suggested by Akim Demaille.
+
+2002-09-06  Akim Demaille  <akim@epita.fr>
+
+	* data/c.m4 (b4_copyright): Move the GPL exception comment from
+	here to...
+	* data/yacc.c: here.
+
+	* data/lalr1.cc (struct yyltype): Don't define it, since we use
+	LocationType.
+	(b4_ltype): Default to yy::Location from location.hh.
+
+2002-09-04  Jim Meyering  <jim@meyering.net>
+
+	* data/yacc.c: Guard the declaration of yytoknum also with
+	`#ifdef YYPRINT', so it is declared only when used.
+
+2002-09-04  Akim Demaille  <akim@epita.fr>
+
+	* configure.in: Rename as...
+	* configure.ac: this.
+	Bump to 1.49c.
+
+2002-09-04  Akim Demaille  <akim@epita.fr>
+
+	* src/assoc.c, src/closure.c, src/gram.c, src/injections.c,
+	* src/lalr.c, src/LR0.c, src/relation.c, src/tables.c: Don't
+	translate maintainer only messages.
+
+2002-08-12  Paul Eggert  <eggert@twinsun.com>
+
+	Version 1.49b.
+
+	* Makefile.am (SUBDIRS): Remove intl.
+	(DISTCLEANFILES): Remove.
+	* NEWS: Mention that GNU M4 is now required.  Clarify what is
+	meant by "larger grammars".  Mention the pt_BR translation.
+	* configure.in (AC_CHECK_DECLS): Add getenv, getopt.
+	(AM_GNU_GETTEXT_VERSION): New macro, replacing GETTEXT_VERSION var.
+	Bump version from 0.11.2 to 0.11.5.
+	(BISON_PREREQ_STAGE): Remove.
+	(AM_GNU_GETTEXT): Use external gettext.
+	(AC_OUTPUT): Remove intl/Makefile.
+
+	* config/depcomp, config/install-sh: Sync with Automake 1.6.3.
+
+	* data/glr.c: Include string.h, for strlen.
+	(yyreportParseError): Use size_t for yysize.
+	(yy_yypstack): No longer nested inside yypstates, as nested
+	functions are not portable.  Do not assume size_t is the
+	same width as int.
+	(yypstates): Do not assume that ptrdiff_t is the same width
+	as int, and similarly for yyposn and YYINDEX.
+
+	* data/yacc.c: Fix comment about `$$ = $1': it can copy garbage.
+
+	* lib/Makefile.am (INCLUDES): Do not include from the intl
+	directory, which has been removed.
+	* src/Makefile.am (INCLUDES): Likewise.
+
+	* lib/Makefile.am (libbison_a_SOURCES): Add unlocked-io.h.
+	(bitsets_sources, additional_bitsets_sources, timevars_sources):
+	New vars.
+
+	* lib/Makefile.am (libbison_a_SOURCES): Avoid +=, a GNU make extension.
+	* tests/Makefile.am (EXTRA_DIST): Likewise.
+
+	* lib/abitset.c (abitset_reverse_list, ebitset_reverse_list):
+	Do not assume that bitset_windex is the same width as unsigned.
+
+	* lib/abitset.c (abitset_unused_clear): Do not assume that
+	bitset_word is the same width as int.
+	* lib/bbitset.h (BITSET_INDEX_MAX, BITSET_MSB): Likewise.
+	* lib/bitset.h (bitset_set, bitset_reset): Likewise.
+	* lib/bitset_stats.c (bitset_stats_set, bitset_stats_reset): Likewise.
+	* lib/ebitset.c (ebitset_set, ebitset_reset): Likewise.
+	* lib/lbitset.c (lbitset_set, lbitset_reset): Likewise.
+
+	* lib/abitset.c (abitset_op1): Use -1, not ~0, as memset arg (for
+	portability to one's complement hosts!).
+	* lib/ebitset.c (ebitset_op1): Likewise.
+	* lib/lbitset.c (lbitset_op1): Likewise.
+
+	* lib/argmatch.c, lib/quotearg.c, quotearg.h: Sync with GNU tar.
+	* lib/argmatch.h, lib/basename.c, lib/dirname.c, lib/dirname.h,
+	lib/hash.c, lib/hash.h, lib/strnlen.c, lib/xmalloc.c:
+	Sync with fileutils.
+	* lib/error.c, lib/getopt.c, lib/getopt.h, lib/getopt1.c,
+	lib/gettext.h: Sync with diffutils.
+
+	* lib/memrchr.c, lib/mkstemp.c, lib/strchr.c, lib/strnlen.c,
+	lib/strspn.c, lib/tempname.c: Use GPL, not LGPL.
+
+	* lib/obstack.c, lib/obstack.h: Sync with fileutils, except use
+	PROTOTYPES to check for prototypes, and "defined __STDC__" to
+	check for void *.
+
+	* lib/bbitset.h (BITSET_WORD_BITS): Now of type unsigned, not
+	size_t; the old version tried to do this but casted improperly.
+	(bitset_bindex, bitset_windex): Now size_t, not unsigned long.
+	(bitset_test): Now returns int, not unsigned long.
+
+	* lib/bitset_stats.c: Include "gettext.h".
+	(_): New macro.
+	(bitset_stats_set, bitset_stats_reset, bitset_stats_test): Don't
+	name locals "index", as it generates unnecessary warnings on some
+	hosts that have an "index" function.
+
+	* lib/bitset_stats.c (bitset_stats_print_1, bitset_stats_print,
+	bitset_stats_read, bitset_stats_write): Wrap strings in _() if
+	they need translation.
+	* src/LR0.c (state_list_append, new_itemsets, get_state,
+	append_states, generate_states): Likewise.
+	* src/assoc.c (assoc_to_string): Likewise.
+	* src/closure.c (print_closure, set_firsts, closure): Likewise.
+	* src/gram.c (grammar_dump): Likewise.
+	* src/injections.c (injections_compute): Likewise.
+	* src/lalr.c (lookaheads_print): Likewise.
+	* src/relation.c (relation_transpose): Likewise.
+	* src/scan-gram.l: Likewise.
+	* src/tables.c (table_grow, pack_vector): Likewise.
+
+	* m4/Makefile.am (EXTRA_DIST): Remove codeset.m4,
+	glibc21.m4, isc-posix.m4 lcmessage.m4, stage.m4.
+	* m4/malloc.m4, m4/realloc.m4: Sync with diffutils.
+	* m4/mbstate_t.m4: Sync with fileutils.
+	* m4/prereq.m4 (jm_PREREQ_QUOTEARG): AC_MBSTATE_T -> AC_TYPE_MBSTATE_T.
+
+	* po/LINGUAS: Add pt_BR.
+	* po/POTFILES.in: Add src/assoc.c, src/closure.c, src/gram.c,
+	src/main.c, src/relation.c, src/state.c, lib/bitset_stats.c,
+	lib/timevar.c.
+	Use src/parse-gram.y instead of src/parse-gram.c, as the gettext
+	manual recommends.
+	Similarly, use src/scan-gram.l instead of src/scan-gram.c.
+
+	* src/complain.c (strerror_r): Remove decl; not needed.
+	(strerror): Use same pattern as ../lib/error.c.
+
+	* src/files.c, src/files.h (compute_header_macro): Remove; unused.
+
+	* src/gram.c (grammar_dump): Do not assume ptrdiff_t fits in int.
+
+	* src/main.c (main): Cast result of bindtextdomain and textdomain
+	to void, to avoid a GCC warning when --disable-nls is in effect.
+
+	* src/scan-gram.l: Use strings rather than escapes when possible,
+	to minimize the number of warnings from xgettext.
+	(handle_action_dollar, handle_action_at): Don't use isdigit,
+	as it mishandles negative chars and it may not work as expected
+	outside the C locale.
+
+	* src/symtab.c (symbol_get): Don't cast LHS of an assignment;
+	this is a GCC extension and is not portable to other compilers.
+
+	* src/system.h (alloca): Use same pattern as ../lib/error.c.
+	Do not include <ctype.h>; no longer needed.
+	Do not include <malloc.h>; no longer needed (and generates
+	warnings on OpenBSD 3.0).
+
+	* tests/cxx-type.at (yylex): Do not pass signed char to isupper;
+	it's not portable.
+
+	* tests/regression.at: Do not use 'cc -c input.c -o input';
+	Sun C rejects this.  Instead, use 'cc -c input.c -o input.o'.
+
+	* tests/synclines.at (AC_SYNCLINES_COMPILE): Accept any nonzero
+	exit status as failure, not just exit status 1.  Sun C exits
+	with status 2 sometimes.
+
+	* tests/torture.at (AT_INCREASE_DATA_SIZE): New macro.
+	Use it for the two large tests.
+
+2002-08-02  Akim Demaille  <akim@epita.fr>
+
+	* src/conflicts.c (conflicts_output): Don't output rules never
+	reduced here, since anyway that computation doesn't work.
+	* src/gram.h, src/gram.h (rule_filter_t, rule_useful_p)
+	(rule_useless_p, rule_never_reduced_p): New.
+	(grammar_rules_partial_print): Use a filter instead of a range.
+	Display the title only if needed.
+	(grammar_rules_print): Adjust.
+	(grammar_rules_never_reduced_report): New.
+	* src/tables.c (action_row): Move the computation of rules never
+	reduced to...
+	(token_actions): here.
+	* src/main.c (main): Make the parser before making the report, so
+	that rules never reduced are computed.
+	Call grammar_rules_never_reduced_report.
+	* src/print.c (print_results): Report rules never reduced.
+	* tests/conflicts.at, tests/reduce.at: Adjust.
+
+2002-08-01  Akim Demaille  <akim@epita.fr>
+
+	Instead of attaching lookaheads and duplicating the rules being
+	reduced by a state, attach the lookaheads to the reductions.
+
+	* src/state.h (state_t): Remove the `lookaheads',
+	`lookaheads_rule' member.
+	(reductions_t): Add a `lookaheads' member.
+	Use a regular array for the `rules'.
+	* src/state.c (reductions_new): Initialize the lookaheads member
+	to 0.
+	(state_rule_lookaheads_print): Adjust.
+	* src/state.h, src/state.c (state_reductions_find): New.
+	* src/conflicts.c (resolve_sr_conflict, set_conflicts)
+	(count_rr_conflicts): Adjust.
+	* src/lalr.c (LArule): Remove.
+	(add_lookback_edge): Adjust.
+	(state_lookaheads_count): New.
+	(states_lookaheads_initialize): Merge into...
+	(initialize_LA): this.
+	(lalr_free): Adjust.
+	* src/main.c (main): Don't free nullable and derives too early: it
+	is used by --verbose.
+	* src/print.c, src/print_graph.c, src/tables.c: Adjust.
+
+2002-08-01  Akim Demaille  <akim@epita.fr>
+
+	* src/derives.h, src/derives.c (derives): A `rule_t***' instead of
+	`rule_number_t**'.
+	(set_derives, free_derives): Rename as...
+	(derives_compute, derives_free): this.
+	Adjust all dependencies.
+	* src/nullable.c (set_nullable, free_nullable): Rename as...
+	(nullable_compute, nullable_free): these.
+	(rule_list_t): Store rule_t *, not rule_number_t.
+	* src/state.c (state_rule_lookaheads_print): Directly compare rule
+	pointers, instead of their numbers.
+	* src/main.c (main): Call nullable_free, and derives_free earlier,
+	as they were lo longer used.
+
+2002-08-01  Akim Demaille  <akim@epita.fr>
+
+	* lib/timevar.c (get_time): Include children time.
+	* src/lalr.h (LA, LArule): Don't export them: used with the
+	state_t.
+	* src/lalr.c (LA, LArule): Static.
+	* src/lalr.h, src/lalr.c (lalr_free): New.
+	* src/main.c (main): Call it.
+	* src/tables.c (pack_vector): Check whether loc is >= to the
+	table_size, not >.
+	(pack_tables): Don't free froms, tos, conflict_tos, and pos...
+	(tables_generate): do it, since that's also it which allocates
+	them.
+	Don't free LA and LArule, main does.
+
+2002-07-31  Akim Demaille  <akim@epita.fr>
+
+	Separate parser tables computation and output.
+
+	* src/output.c (nvectors, base_t, base, base_ninf, conflict_table)
+	(conflict_list, conflict_list_cnt, table, check, table_ninf)
+	(yydefgoto, yydefact, high): Move to...
+	* src/tables.h, src/tables.c: here.
+	* src/output.c (vector_number_t, VECTOR_NUMBER_MAX)
+	(VECTOR_NUMBER_MIN, state_number_to_vector_number)
+	(symbol_number_to_vector_number, nvectors, BASE_MAX, BASE_MIN)
+	(froms, tos, conflict_tos, tally, width, action_t, ACTION_MAX)
+	(ACTION_MIN, actrow, order, nentries, pos, conflrow)
+	(conflict_list_free, table_size, lowzero, table_grow, conflict_row)
+	(action_row, save_row, token_actions, save_column, default_goto)
+	(goto_actions, sort_actions, matching_state, pack_vector)
+	(table_ninf_remap, pack_table, prepare_actions): Move to...
+	* src/tables.c: here.
+	* src/tables.h, src/tables.c(tables_generate, tables_free): New.
+	* src/output.c (token_actions, output_base, output_conflicts)
+	(output_check): Merge into...
+	(prepare_actions): this.
+	(actions_output): Rename as...
+	(user_actions_output): this.
+	* src/main.c (main): Call tables_generate and tables_free.
+
+2002-07-31  Akim Demaille  <akim@epita.fr>
+
+	Steal GCC's --time-report support.
+
+	* lib/timevar.c, lib/timevar.h, lib/timevar.def: New,
+	stolen/adjusted from GCC.
+	* m4/stage.m4: Remove time related checks.
+	* m4/timevar.m4: New.
+	* configure.in: Adjust.
+	* src/system.h: Adjust to using timevar.h.
+	* src/getargs.h, src/getargs.c: Support trace_time for
+	--trace=time.
+	* src/main.c (stage): Remove.
+	(main): Replace `stage' invocations with timevar calls.
+	* src/output.c: Insert pertinent timevar calls.
+
+2002-07-31  Akim Demaille  <akim@epita.fr>
+
+	Let --trace have arguments.
+
+	* src/getargs.h (enum trace_e): New.
+	* src/getargs.c (trace_args, trace_types, trace_argmatch): New.
+	(long_options, short_options): --trace/-T takes an optional
+	argument.
+	Change all the uses of trace_flag to reflect the new flags.
+	* tests/sets.at (Firsts, Nullable, Broken Closure): Use --trace=sets.
+
+	Strengthen `stage' portability.
+
+	* m4/stage.m4 (BISON_PREREQ_STAGE): New.
+	* configure.in: Use it.
+	Don't check for malloc.h and sys/times.h.
+	* src/system.h: Include them when appropriate.
+	* src/main.c (stage): Compile only when mallinfo, struct mallinfo,
+	times and struct tms are available.
+
+2002-07-30  Akim Demaille  <akim@epita.fr>
+
+	In verbose parse error message, don't report `error' as an
+	expected token.
+	* tests/actions.at (Printers and Destructors): Adjust.
+	* tests/calc.at (Calculator $1): Adjust.
+	* data/yacc.c, data/glr.c, data/lalr1.c: When making the verbose
+	error message, do not report the parser accepts the error token in
+	that state.
+
+2002-07-30  Akim Demaille  <akim@epita.fr>
+
+	Normalize conflict related messages.
+
+	* src/complain.h, src/complain.c (warn, complain): New.
+	* src/conflicts.c (conflicts_print): Use them.
+	(conflict_report_yacc): New, extracted from...
+	(conflicts_print): here.
+	* tests/conflicts.at, tests/existing.at: Adjust.
+
+2002-07-30  Akim Demaille  <akim@epita.fr>
+
+	Report rules which are never reduced by the parser: those hidden
+	by conflicts.
+
+	* src/LR0.c (save_reductions): Don't make the final state too
+	different: save its reduction (accept) instead of having a state
+	without any action (no shift or goto, no reduce).
+	Note: the final state is now a ``regular'' state, i.e., the
+	parsers now contain `reduce 0' as default reduction.
+	Nevertheless, since they decide to `accept' when yystate =
+	final_state, they still will not reduce rule 0.
+	* src/print.c (print_actions, print_reduction): Adjust.
+	* src/output.c (action_row): Track reduced rules.
+	(token_actions): Report rules never reduced.
+	* tests/conflicts.at, tests/regression.at: Adjust.
+
+2002-07-30  Akim Demaille  <akim@epita.fr>
+
+	`stage' was accidentally included in a previous patch.
+	Initiate its autoconfiscation.
+
+	* configure.in: Look for malloc.h and sys/times.h.
+	* src/main.c (stage): Adjust.
+	Report only when trace_flag.
+
+2002-07-29  Akim Demaille  <akim@epita.fr>
+
+	* src/state.h, src/state.c (transitions_t): Holds state_t*'s, not
+	state_number_t.
+	(errs_t): symbol_t*, not symbol_number_t.
+	(reductions_t): rule_t*, not rule_number_t.
+	(FOR_EACH_SHIFT): New.
+	* src/LR0.c, src/conflicts.c, src/lalr.c, src/output.c
+	* src/print.c, src/print_graph.c: Adjust.
+
+2002-07-29  Akim Demaille  <akim@epita.fr>
+
+	Use $accept and $end, as BYacc and BTYacc do, instead of $axiom and $.
+
+	* src/symtab.h, src/symtab.c (eoftoken, axiom): Rename as...
+	(endtoken, accept): these.
+	* src/reader.c (reader): Set endtoken's default tag to "$end".
+	Set undeftoken's tag to "$undefined" instead of "$undefined.".
+	* doc/bison.texinfo (Table of Symbols): Mention $accept and $end.
+	Adjust.
+
+2002-07-29  Akim Demaille  <akim@epita.fr>
+
+	* src/reduce.c (reduce_grammar): When the language is empty,
+	complain about the start symbol, not the axiom.
+	Use its location.
+	* tests/reduce.at (Empty Language): New.
+
+2002-07-26  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.h, src/reader.c (gram_error): ... can't get
+	yycontrol without making too strong assumptions on the parser
+	itself.
+	* src/output.c (prepare_tokens): Use the real 0th value of
+	token_translations instead of `0'.
+	* src/parse-gram.y (yyerror): Don't rely on yycontrol being
+	visible here.
+	* data/yacc.c (yyreport_parse_error): Rename yylocation as yylloc
+	for the time being: %locations ought to provide it to yyerror.
+
+2002-07-25  Akim Demaille  <akim@epita.fr>
+
+	* src/output.c (prepare_tokens): Go up to ntokens, not ntokens + 1.
+	* doc/bison.texinfo (Decl Summary): s/$illegal/$undefined./.
+	* tests/regression.at (Web2c Actions): Adjust.
+
+2002-07-25  Akim Demaille  <akim@epita.fr>
+
+	Stop storing rules from 1 to nrules + 1.
+
+	* src/LR0.c, src/closure.c, src/derives.c, src/gram.c, src/lalr.c
+	* src/nullable.c, src/output.c, src/print.c, src/reader.c
+	* src/reduce.c: Allocate and free from &rules[0], not &rules[1].
+	Iterate from 0 to nrules.
+	Use rule_number_as_item_number and item_number_as_rule_number.
+	Adjust to `derive' now containing possibly 0.
+	* src/gram.h (rule_number_as_item_number, item_number_as_rule_number):
+	Handle the `- 1' part in rule numbers from/to item numbers.
+	* src/conflicts.c (log_resolution): Fix the message which reversed
+	shift and reduce.
+	* src/output.c (action_row): Initialize default_rule to -1.
+	(token_actions): Adjust.
+	* tests/sets.at (Nullable, Firsts): Fix the previously bogus
+	expected output.
+	* tests/conflicts.at (Resolved SR Conflicts): Likewise.
+
+2002-07-25  Akim Demaille  <akim@epita.fr>
+
+	* data/c.m4 (b4_c_function, b4_c_ansi_args, b4_c_ansi_arg)
+	(b4_c_knr_arg_names, b4_c_knr_arg_name, b4_c_knr_arg_decls)
+	(b4_c_knr_arg_decl): New.
+	* data/yacc.c: Use it to define yysymprint, yydestruct, and
+	yyreport_parse_error.
+
+2002-07-25  Akim Demaille  <akim@epita.fr>
+
+	* data/yacc.c (yyreport_parse_error): New, extracted from...
+	(yyparse): here.
+	(yydestruct, yysymprint): Move above yyparse.
+	Be K&R compliant.
+
+2002-07-25  Akim Demaille  <akim@epita.fr>
+
+	* data/c.m4 (b4_ints_in, b4_int_type, b4_int_type_for): New,
+	replace...
+	(b4_sint_type, b4_uint_type): these.
+	* data/yacc.c, data/glr.c, data/lalr1.cc: Use b4_int_type_for.
+	* tests/regression.at (Web2c Actions): Adjust.
+
+2002-07-25  Akim Demaille  <akim@epita.fr>
+
+	* src/gram.h (TIEM_NUMBER_MAX): New.
+	(item_number_of_rule_number, rule_number_of_item_number): Rename
+	as...
+	(rule_number_as_item_number, item_number_as_rule_number): these.
+	Adjust dependencies.
+	* src/output.c (vector_number_t, VECTOR_NUMBER_MAX)
+	(VECTOR_NUMBER_MIN, state_number_to_vector_number)
+	(symbol_number_to_vector_number): New.
+	(order): Of vector_number_t* type.
+	(base_t, BASE_MAX, BASE_MIN): New.
+	(froms, tos, width, pos, check): Of base_t type.
+	(action_number_t, ACTION_MIN, ACTION_MAX): New.
+	(actrow): Of action_number_t type.
+	(conflrow): Of unsigned int type.
+	(table_ninf, base_ninf): New.
+	(GENERATE_MUSCLE_INSERT_TABLE): Also output the `*_min' value.
+	(muscle_insert_int_table, muscle_insert_base_table)
+	(muscle_insert_rule_number_table): New.
+	(prepare_tokens): Output `toknum' as int_table.
+	(action_row): Returns a rule_number_t.
+	Use ACTION_MIN, not SHRT_MIN.
+	(token_actions): yydefact is rule_number_t*.
+	(table_ninf_remap): New.
+	(pack_table): Use it for `base' and `table'.
+	* data/yacc.c, data/glr.c, data/lalr1.cc (YYFLAG): Remove,
+	replaced with...
+	(YYPACT_NINF, YYTABLE_NINF): these.
+	(yypact, yytable): Compute their types instead of hard-coded
+	`short'.
+	* tests/regression.at (Web2c Actions): Adjust.
+
+2002-07-19  Akim Demaille  <akim@epita.fr>
+
+	* src/scan-gram.l (id): Can start with an underscore.
+
+2002-07-16  Akim Demaille  <akim@epita.fr>
+
+	* src/assoc.c, src/asssoc.h (assoc_t, assoc_to_string): New.
+	Adjust all former `associativity' dependencies.
+	* src/symtab.c (symbol_new): Default associativity is `undef', not
+	`right'.
+	(symbol_check_alias_consistence): Adjust.
+
+2002-07-09  Akim Demaille  <akim@epita.fr>
+
+	* doc/bison.texinfo: Properly set the ``header'' part.
+	Use @dircategory ``GNU programming tools'' as per Texinfo's
+	documentation.
+	Use @copying.
+
+2002-07-09  Akim Demaille  <akim@epita.fr>
+
+	* lib/quotearg.h: Protect against multiple inclusions.
+	* src/location.h (location_t): Add a `file' member.
+	(LOCATION_RESET, LOCATION_PRINT): Adjust.
+	* src/complain.c (warn_at, complain_at, fatal_at): Drop
+	`error_one_per_line' support.
+
+2002-07-09  Akim Demaille  <akim@epita.fr>
+
+	* src/complain.h, src/complain.c (warn, complain): Remove, unused.
+	* src/reader.c (lineno): Remove.
+	Adjust all dependencies.
+	(get_merge_function): Take a location and use complain_at.
+	* src/symtab.h, src/symtab.c (symbol_make_alias): Likewise.
+	* tests/regression.at (Invalid inputs, Mixing %token styles):
+	Adjust.
+
+2002-07-09  Akim Demaille  <akim@epita.fr>
+
+	* src/parse-gram.y (rules_or_grammar_declaration): Add an error
+	recovery rule, and forbid extensions when --yacc.
+	(gram_error): Use complain_at.
+	* src/reader.c (reader): Exit if there were parse errors.
+
+2002-07-09  Akim Demaille  <akim@epita.fr>
+
+	* tests/synclines.at (AT_SYNCLINES_COMPILE): New.
+	(AT_TEST_SYNCLINE): Adjust to unusual GCC outputs.
+	Reported by R Blake <blakers@mac.com>.
+
+2002-07-09  Akim Demaille  <akim@epita.fr>
+
+	* data/yacc.c: Output the copyright notive in the header.
+
+2002-07-03  Akim Demaille  <akim@epita.fr>
+
+	* src/output.c (froms, tos): Are state_number_t.
+	(save_column): sp, sp1, and sp2 are state_number_t.
+	(prepare): Rename `final' as `final_state_number', `nnts' as
+	`nterms_number', `nrules' as `rules_number', `nstates' as
+	`states_number', and `ntokens' as `tokens_number'.  Remove `nsym',
+	unused.
+	* data/yacc.c, data/glr.c, data/lalr1.cc: Adjust.
+	* data/lalr1.cc (nsym_): Remove, unused.
+
+2002-07-03  Akim Demaille  <akim@epita.fr>
+
+	* src/lalr.h, src/lalr.c (goto_number_t): New.
+	* src/lalr.c (goto_list_t): New.
+	Propagate them.
+	* src/nullable.c (rule_list_t): New.
+	Propagate.
+	* src/types.h: Remove.
+
+2002-07-03  Akim Demaille  <akim@epita.fr>
+
+	* src/closure.c (print_fderives): Use rule_rhs_print.
+	* src/derives.c (print_derives): Use rule_rhs_print.
+	(rule_list_t): New, replaces `shorts'.
+	(set_derives): Add comments.
+	* tests/sets.at (Nullable, Firsts): Adjust.
+
+2002-07-03  Akim Demaille  <akim@epita.fr>
+
+	* src/output.c (prepare_actions): Free `tally' and `width'.
+	(prepare_actions): Allocate and free `order'.
+	* src/symtab.c (symbols_free): Free `symbols'.
+	* src/scan-gram.l (scanner_free): Clear Flex's scanners memory.
+	* src/output.c (m4_invoke): Move to...
+	* src/scan-skel.l: here.
+	(<<EOF>>): Close yyout, and free its name.
+
+2002-07-03  Akim Demaille  <akim@epita.fr>
+
+	Fix some memory leaks, and fix a bug: state 0 was examined twice.
+
+	* src/LR0.c (new_state): Merge into...
+	(state_list_append): this.
+	(new_states): Merge into...
+	(generate_states): here.
+	(set_states): Don't ensure a proper `errs' state member here, do it...
+	* src/conflicts.c (conflicts_solve): here.
+	* src/state.h, src/state.c: Comment changes.
+	(state_t): Rename member `shifts' as `transitions'.
+	Adjust all dependencies.
+	(errs_new): For consistency, also take the values as argument.
+	(errs_dup): Remove.
+	(state_errs_set): New.
+	(state_reductions_set, state_transitions_set): Assert that no
+	previous value was assigned.
+	(state_free): New.
+	(states_free): Use it.
+	* src/conflicts.c (resolve_sr_conflict): Don't use an `errs_t' as
+	temporary storage: use `errs' and `nerrs' as elsewhere.
+	(set_conflicts): Allocate and free this `errs'.
+
+2002-07-02  Akim Demaille  <akim@epita.fr>
+
+	* lib/libiberty.h: New.
+	* lib: Update the bitset implementation from upstream.
+	* src/closure.c, src/lalr.c, src/output.c, src/print_graph.c,
+	* src/state.c: Use BITSET_FOR_EACH, not BITSET_EXECUTE.
+	* src/main.c: Adjust bitset stats calls.
+
+2002-07-01  Paul Eggert  <eggert@twinsun.com>
+
+	* src/scan-gram.l (<SC_ESCAPED_CHARACTER>): Convert to unsigned
+	char, so that negative chars don't collide with $.
+
+2002-06-30  Akim Demaille  <akim@epita.fr>
+
+	Have the GLR tests be `warning' checked, and fix the warnings.
+
+	* data/glr.c (YYFPRINTF): Always define it, not only when YYDEBUG
+	(yyuserAction, yyreportAmbiguity): `Use' all the arguments.
+	(yyremoveDeletes): `yyi' and `yyj' are size_t.
+	Use YYFPRINTF when under if (YYDEBUG) to avoid empty `if' bodies.
+	(yyaddDeferredAction): static.
+	(yyglrReduce): yyi, yyk, amd yyposn are size_t.
+	(yyreportParseError): yyprefix is const.
+	yytokenp is used only when verbose.
+	(yy__GNUC__): Replace with __GNUC__.
+	(yypdumpstack): yyi is size_t.
+	(yypreference): Un-yy local variables and arguments, to avoid
+	clashes with `yyr1'.  Anyway, we are not in the user name space.
+	(yytname_size): be an int, as is compared with ints.
+	* tests/testsuite.at (AT_COMPILE, AT_PARSER_CHECK): New.
+	Use them.
+	* tests/cxx-gram.at: Use quotation to protect $1.
+	Use AT_COMPILE to enable warnings hunts.
+	Prototype yylex and yyerror.
+	`Use' argc.
+	Include `string.h', not `strings.h'.
+	Produce and prototype stmtMerge only when used.
+	yylex takes a location.
+
+2002-06-30  Akim Demaille  <akim@epita.fr>
+
+	We spend a lot of time in quotearg, in particular when --verbose.
+
+	* src/symtab.c (symbol_get): Store a quoted version of the key.
+	(symbol_tag_get, symbol_tag_get_n, symbol_tag_print): Remove.
+	Adjust all callers.
+
+2002-06-30  Akim Demaille  <akim@epita.fr>
+
+	* src/state.h (reductions_t): Rename member `nreds' as num.
+	(errs_t): Rename members `nerrs' and `errs' as `num' and `symbols'.
+	* src/state.c (ERRS_ALLOC, REDUCTIONS_ALLOC): Use the correct types.
+
+2002-06-30  Akim Demaille  <akim@epita.fr>
+
+	* src/state.h, src/state.c (shift_t, SHIFT_SYMBOL, SHIFT_IS_SHIFT)
+	(SHIFT_IS_GOTO, SHIFT_IS_ERROR, SHIFT_DISABLE, SHIFT_IS_DISABLED)
+	(shifts_to): Rename as...
+	(transition_t, TRANSITION_SYMBOL, TRANSITION_IS_TRANSITION)
+	(TRANSITION_IS_GOTO, TRANSITION_IS_ERROR, TRANSITION_DISABLE)
+	(TRANSITION_IS_DISABLED, transitions_to): these.
+
+2002-06-30  Akim Demaille  <akim@epita.fr>
+
+	* src/print.c (print_shifts, print_gotos): Merge into...
+	(print_transitions): this.
+	(print_transitions, print_errs, print_reductions): Align the
+	lookaheads columns.
+	(print_core, print_transitions, print_errs, print_state,
+	print_grammar): Output empty lines separator before, not after.
+	(state_default_rule_compute): Rename as...
+	(state_default_rule): this.
+	* tests/conflicts.at (Defaulted Conflicted Reduction),
+	(Unresolved SR Conflicts, Resolved SR Conflicts): Adjust.
+	* tests/regression.at (Rule Line Numbers, Web2c Report): Adjust.
+
+2002-06-30  Akim Demaille  <akim@epita.fr>
+
+	Display items as we display rules.
+
+	* src/gram.h, src/gram.c (rule_lhs_print): New.
+	* src/gram.c (grammar_rules_partial_print): Use it.
+	* src/print.c (print_core): Likewise.
+	* tests/conflicts.at (Defaulted Conflicted Reduction),
+	(Unresolved SR Conflicts): Adjust.
+	(Unresolved SR Conflicts): Adjust and rename as...
+	(Resolved SR Conflicts): this, as was meant.
+	* tests/regression.at (Web2c Report): Adjust.
+
+2002-06-30  Akim Demaille  <akim@epita.fr>
+
+	* src/print.c (state_default_rule_compute): New, extracted from...
+	(print_reductions): here.
+	Pessimize, but clarify the code.
+	* tests/conflicts.at (Defaulted Conflicted Reduction): New.
+
+2002-06-30  Akim Demaille  <akim@epita.fr>
+
+	* src/output.c (action_row): Let default_rule be always a rule
+	number.
+
+2002-06-30  Akim Demaille  <akim@epita.fr>
+
+	* src/closure.c (print_firsts, print_fderives, closure):
+	Use BITSET_EXECUTE.
+	* src/lalr.c (lookaheads_print): Likewise.
+	* src/state.c (state_rule_lookaheads_print): Likewise.
+	* src/print_graph.c (print_core): Likewise.
+	* src/print.c (print_reductions): Likewise.
+	* src/output.c (action_row): Likewise.
+	Use SHIFT_IS_DISABLED, SHIFT_IS_SHIFT and SHIFT_SYMBOL.
+
+2002-06-30  Akim Demaille  <akim@epita.fr>
+
+	* src/print_graph.c: Use report_flag.
+
+2002-06-30  Akim Demaille  <akim@epita.fr>
+
+	* src/lalr.c (traverse, digraph, matrix_print, transpose): Move
+	to...
+	* src/relation.h, src/relation.c (traverse, relation_digraph)
+	(relation_print, relation_transpose): New.
+
+2002-06-30  Akim Demaille  <akim@epita.fr>
+
+	* src/state.h, src/state.c (shifts_to): New.
+	* src/lalr.c (build_relations): Use it.
+
+2002-06-30  Akim Demaille  <akim@epita.fr>
+
+	* src/gram.h (rule_number_t, RULE_NUMBER_MAX, int_of_rule_number)
+	(item_number_of_rule_number, rule_number_of_item_number): New.
+	* src/LR0.c, src/closure.c, src/derives.c, src/derives.h,
+	* src/gram.c, src/lalr.c, src/nullable.c, src/output.c, src/print.c,
+	* src/print_graph.c, src/reader.c, src/reduce.c, src/reduce.h:
+	Propagate their use.
+	Much remains to be done, in particular wrt `shorts' from types.h.
+
+2002-06-30  Akim Demaille  <akim@epita.fr>
+
+	* src/symtab.c (symbol_new): Initialize the `printer' member.
+
+2002-06-30  Akim Demaille  <akim@epita.fr>
+
+	* src/LR0.c (save_reductions): Remove, replaced by...
+	* src/state.h, src/state.c (state_reductions_set): New.
+	(reductions, errs): Rename as...
+	(reductions_t, errs_t): these.
+	Adjust all dependencies.
+
+2002-06-30  Akim Demaille  <akim@epita.fr>
+
+	* src/LR0.c (state_list_t, state_list_append): New.
+	(first_state, last_state): Now symbol_list_t.
+	(this_state): Remove.
+	(new_itemsets, append_states, save_reductions): Take a state_t as
+	argument.
+	(set_states, generate_states): Adjust.
+	(save_shifts): Remove, replaced by...
+	* src/state.h, src/state.c (state_shifts_set): New.
+	(shifts): Rename as...
+	(shifts_t): this.
+	Adjust all dependencies.
+	* src/state.h (state_t): Remove the `next' member.
+
+2002-06-30  Akim Demaille  <akim@epita.fr>
+
+	* src/vcg.c (quote): Use slot 2, since we often pass symbol tag
+	escaped in slot 0.
+
+2002-06-30  Akim Demaille  <akim@epita.fr>
+
+	Use hash.h for the state hash table.
+
+	* src/LR0.c (STATE_HASH_SIZE, state_hash): Remove.
+	(allocate_storage): Use state_hash_new.
+	(free_storage): Use state_hash_free.
+	(new_state, get_state): Adjust.
+	* src/lalr.h, src/lalr.c (states): Move to...
+	* src/states.h (state_t): Remove the `link' member, no longer
+	used.
+	* src/states.h, src/states.c: here.
+	(state_hash_new, state_hash_free, state_hash_lookup)
+	(state_hash_insert, states_free): New.
+	* src/states.c (state_table, state_compare, state_hash): New.
+	* src/output.c (output_actions): Do not free states now, since we
+	still need to know the final_state number in `prepare', called
+	afterwards.  Do it...
+	* src/main.c (main): here: call states_free after `output'.
+
+2002-06-30  Akim Demaille  <akim@epita.fr>
+
+	* src/state.h, src/state.c (state_new): New, extracted from...
+	* src/LR0.c (new_state): here.
+	* src/state.h (STATE_ALLOC): Move to...
+	* src/state.c: here.
+	* src/LR0.h, src/LR0.c (nstates, final_state): Move to...
+	* src/state.h, src/state.c: here.
+
+2002-06-30  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (gensym): Rename as...
+	* src/symtab.h, src/symtab.c (dummy_symbol_get): this.
+	(getsym): Rename as...
+	(symbol_get): this.
+
+2002-06-30  Akim Demaille  <akim@epita.fr>
+
+	* src/state.h (state_number_t, STATE_NUMBER_MAX): New.
+	* src/LR0.c, src/LR0.h, src/conflicts.c, src/lalr.c, src/lalr.h,
+	* src/output.c, src/print.c, src/print_graph.c: Propagate.
+	* src/LR0.h, src/LR0.h (final_state): Is a state_t*.
+
+2002-06-30  Akim Demaille  <akim@epita.fr>
+
+	Make the test suite pass with warnings checked.
+
+	* tests/actions.at (Printers and Destructors): Improve.
+	Avoid unsigned vs. signed issues.
+	* tests/calc.at: Don't exercise the scanner here, do it...
+	* tests/input.at (Torturing the Scanner): here.
+
+2002-06-28  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>
+
+	* data/glr.c: Correct typo in Emacs-mode directive.  Slightly
+	reorganize first lines parallel to yacc.c.
+
+2002-06-28  Akim Demaille  <akim@epita.fr>
+
+	* data/c.m4 (b4_copyright, b4_sint_type, b4_uint_type, b4_token_define)
+	(b4_token_enum, b4_token_defines): New, factored from...
+	* data/lalr1.cc, data/yacc.c, glr.c: here.
+
+2002-06-28  Akim Demaille  <akim@epita.fr>
+
+	* data/yacc.c (yydestruct, yysymprint): Pacify GCC warnings for
+	unused variables.
+	* src/output.c (merger_output): static.
+
+2002-06-28  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.h: s/grammer_current_rule_merge_set/grammar_.../.
+	* src/conflicts.c (conflicts_total_count): `i' is unsigned, to
+	pacify GCC.
+	* src/output.c (save_row): Initialize all the variables to pacify GCC.
+
+2002-06-27  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>
+
+	Accumulated changelog for new GLR parsing features.
+
+	* src/conflicts.c (count_total_conflicts): Change name to
+	conflicts_total_count.
+	* src/conflicts.h: Ditto.
+	* src/output.c (token_actions): Use the new name.
+	(output_conflicts): Change conflp => conflict_list_heads, and
+	confl => conflict_list for better readability.
+	* data/glr.c: Use the new names.
+	* NEWS: Add self to GLR announcement.
+
+	* src/reader.c (free_merger_functions): Cleanup: XFREE->free.
+
+	* doc/bison.texinfo (GLR Parsers): Make corrections suggested by
+	Akim Demaille.
+
+	* data/bison.glr: Change name to glr.c
+	* data/glr.c: Renamed from bison.glr.
+	* data/Makefile.am: Add glr.c
+
+	* src/getargs.c:
+
+	* src/symlist.h:  Add dprec and merger fields to symbol_list_s.
+	* src/symlist.c (symbol_list_new): Initialize dprec and merger fields.
+
+	Originally 2002-06-16  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>
+
+	* data/bison.glr: Be sure to restore the
+	current #line when returning to the skeleton contents after having
+	exposed the input file's #line.
+
+	Originally 2002-06-13  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>
+
+	* data/bison.glr: Bring up to date with changes to bison.simple.
+
+	Originally 2002-06-03  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>
+
+	* data/bison.glr: Correct definitions that use b4_prefix.
+	Various reformatting.
+	(GLRStack): Make yychar (in YYPURE case) and yytokenp as part of stack.
+	(yyreportParseError, yyrecoverParseError, yyprocessOneStack): remove
+	yytokenp argument; now part of stack.
+	(yychar): Define to behave as documented.
+	(yyclearin): Ditto.
+
+	Originally 2002-05-14  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>
+
+	* src/reader.h: Add declaration for free_merger_functions.
+
+	* src/reader.c (merge_functions): New variable.
+	(get_merge_function): New function.
+	(free_merger_functions): New function.
+	(readgram): Check for %prec that is not followed by a symbol.
+	Handle %dprec and %merge declarations.
+	(packgram): Initialize dprec and merger fields in rules array.
+
+	* src/output.c (conflict_tos, conflrow, conflict_table, conflict_list,
+	conflict_list_cnt, conflict_list_free): New variables.
+	(table_grow): Also grow conflict_table.
+	(prepare_rules): Output dprec and merger tables.
+	(conflict_row): New function.
+	(action_row): Output conflict lists for GLR parser.  Don't use
+	default reduction in conflicted states for GLR parser so that there
+	are spaces for the conflict lists.
+	(save_row): Also save conflict information.
+	(token_actions): Allocate conflict list.
+	(merger_output): New function.
+	(pack_vector): Pack conflict table, too.
+	(output_conflicts): New function to output yyconflp and yyconfl.
+	(output_check): Allocate conflict_tos.
+	(output_actions): Output conflict tables, also.
+	(output_skeleton): Output b4_mergers definition.
+	(prepare): Output b4_max_rhs_length definition.
+	Use 'bison.glr' as default skeleton for GLR parsers.
+
+	* src/gram.c (glr_parser): New flag.
+	(grammar_free): Call free_merger_functions.
+
+	* src/conflicts.c (count_rr_conflicts): Augment to optionally count
+	all pairs of conflicting reductions, rather than just all tokens
+	causing conflicts.  Needed to size conflict tables.
+	(conflicts_output): Modify call to count_rr_conflicts for new
+	interface.
+	(conflicts_print): Ditto.
+	(count_total_conflicts): New function.
+
+	* src/reader.h (merger_list): New type.
+	(merge_functions): New variable.
+
+	* src/lex.h (tok_dprec, tok_merge): New token types.
+
+	* src/gram.h (rule_s): Add dprec and merger fields.
+	(glr_parser): New flag.
+
+	* src/conflicts.h (count_total_conflicts): New function.
+
+	* src/options.c (option_table): Add %dprec, %merge, and %glr-parser.
+
+	* doc/bison.texinfo (Generalized LR Parsing): New section.
+	(GLR Parsers): New section.
+	(Language and Grammar): Mention GLR parsing.
+	(Table of Symbols): Add %dprec, %glr-parser, %merge, GLR
+	Correct typo ("tge" -> "the").
+
+	* data/bison.glr: New skeleton for GLR parsing.
+
+	* tests/cxx-gram.at: New tests for GLR parsing.
+
+	* tests/testsuite.at: Include cxx-gram.at.
+
+	* tests/Makefile.am: Add cxx-gram.at.
+
+	* src/parse-gram.y:
+
+	* src/scan-gram.l: Add %dprec, %glr-parser, %merge.
+
+	* src/parse-gram.y: Grammar for %dprec, %merge, %glr-parser.
+
+2002-06-27  Akim Demaille  <akim@epita.fr>
+
+	* src/options.h, src/options.c: Remove.
+	* src/getargs.c (short_options, long_options): New.
+
+2002-06-27  Akim Demaille  <akim@epita.fr>
+
+	* data/bison.simple, data/bison.c++: Rename as...
+	* data/yacc.c, data/lalr1.cc: these.
+	* doc/bison.texinfo (Environment Variables): Remove.
+
+2002-06-25  Raja R Harinath  <harinath@cs.umn.edu>
+
+	* src/getargs.c (report_argmatch): Initialize strtok().
+
+2002-06-20  Akim Demaille  <akim@epita.fr>
+
+	* data/bison.simple (b4_symbol_actions): New, replaces...
+	(b4_symbol_destructor, b4_symbol_printer): these.
+	(yysymprint): Be sure to call YYPRINT only for tokens, and using
+	user token numbers.
+
+2002-06-20  Akim Demaille  <akim@epita.fr>
+
+	* data/bison.simple (yydestructor): Rename as...
+	(yydestruct): this.
+
+2002-06-20  Akim Demaille  <akim@epita.fr>
+
+	* src/symtab.h, src/symtab.c (symbol_type_set)
+	(symbol_destructor_set, symbol_precedence_set): The location is
+	the last argument.
+	Adjust all callers.
+
+2002-06-20  Akim Demaille  <akim@epita.fr>
+
+	* src/parse-gram.y (YYPRINT, yyprint): Don't mess with the parser
+	internals.
+	* src/reader.h, src/reader.c (grammar_current_rule_prec_set):
+	Takes a location.
+	* src/symtab.h, src/symtab.c (symbol_class_set)
+	(symbol_user_token_number_set): Likewise.
+	Adjust all callers.
+	Promote complain_at.
+	* tests/input.at (Type Clashes): Adjust.
+
+2002-06-20  Akim Demaille  <akim@epita.fr>
+
+	* data/bison.simple (YYLEX): Fix the declaration when
+	%pure-parser.
+
+2002-06-20  Akim Demaille  <akim@epita.fr>
+
+	* data/bison.simple (yysymprint): Don't print the token number,
+	just its name.
+	* tests/actions.at (Destructors): Rename as...
+	(Printers and Destructors): this.
+	Also exercise %printer.
+
+2002-06-20  Akim Demaille  <akim@epita.fr>
+
+	* data/bison.simple (YYDSYMPRINT): New.
+	Use it to remove many of the #if YYDEBUG/if (yydebug).
+
+2002-06-20  Akim Demaille  <akim@epita.fr>
+
+	* src/symtab.h, src/symtab.c (symbol_t): printer and
+	printer_location are new members.
+	(symbol_printer_set): New.
+	* src/parse-gram.y (PERCENT_PRINTER): New token.
+	Handle its associated rule.
+	* src/scan-gram.l: Adjust.
+	(handle_destructor_at, handle_destructor_dollar): Rename as...
+	(handle_symbol_code_at, handle_symbol_code_dollar): these.
+	* src/output.c (symbol_printers_output): New.
+	(output_skeleton): Call it.
+	* data/bison.simple (yysymprint): New.  Cannot be named yyprint
+	since there are already many grammar files with a user `yyprint'.
+	Replace the calls to YYPRINT to calls to yysymprint.
+	* tests/calc.at: Adjust.
+	* tests/torture.at (AT_DATA_STACK_TORTURE): Remove YYPRINT: it was
+	taking advantage of parser very internal details (stack size!).
+
+2002-06-20  Akim Demaille  <akim@epita.fr>
+
+	* src/scan-gram.l: Complete the scanner with the missing patterns
+	to pacify Flex.
+	Use `quote' and `symbol_tag_get' where appropriate.
+
+2002-06-19  Akim Demaille  <akim@epita.fr>
+
+	* tests/actions.at (Destructors): Augment to test locations.
+	* data/bison.simple (yydestructor): Pass it the current location
+	if locations are enabled.
+	Prototype only when __STDC__ or C++.
+	Change the argument names to move into the yy name space: there is
+	user code here.
+
+2002-06-19  Akim Demaille  <akim@epita.fr>
+
+	* data/bison.simple (b4_pure_if): New.
+	Use it instead of #ifdef YYPURE.
+
+2002-06-19  Akim Demaille  <akim@epita.fr>
+
+	* data/bison.simple (b4_location_if): New.
+	Use it instead of #ifdef YYLSP_NEEDED.
+
+2002-06-19  Akim Demaille  <akim@epita.fr>
+
+	Prepare @$ in %destructor, but currently don't bind it in the
+	skeleton, as %location use is not cleaned up yet.
+
+	* src/scan-gram.l (handle_dollar, handle_destructor_at)
+	(handle_action_at): New.
+	(handle_at, handle_action_dollar, handle_destructor_dollar): Take
+	a braced_code_t and a location as additional arguments.
+	(handle_destructor_dollar): Instead of requiring `b4_eval', just
+	unquote one when outputting `b4_dollar_dollar'.
+	Adjust callers.
+	* data/bison.simple (b4_eval): Remove.
+	(b4_symbol_destructor): Adjust.
+	* tests/input.at (Invalid @n): Adjust.
+
+2002-06-19  Zack Weinberg  <zack@codesourcery.com>
+
+	* doc/bison.texinfo: Document ability to have multiple
+	prologue sections.
+
+2002-06-18  Akim Demaille  <akim@epita.fr>
+
+	* src/files.c (compute_base_names): When computing the output file
+	names from the input file name, strip the directory part.
+
+2002-06-18  Akim Demaille  <akim@epita.fr>
+
+	* data/bison.simple.new: Comment changes.
+	Reported by Andreas Schwab.
+
+2002-06-18  Matt Kraai  <kraai@alumni.cmu.edu>
+
+	* data/bison.simple (yyoverflowlab): #ifndef yyoverflow, so that
+	there are no `label `yyoverflowlab' defined but not used' warnings
+	when yyoverflow is defined.
+
+2002-06-18  Akim Demaille  <akim@epita.fr>
+
+	* src/symtab.h, src/symtab.c (symbol_t): destructor_location is a
+	new member.
+	(symbol_destructor_set): Adjust.
+	* src/output.c (symbol_destructors_output): Output the destructor
+	locations.
+	Output the symbol name.
+	* data/bison.simple (b4_symbol_destructor): Adjust.
+
+2002-06-18  Cris Bailiff  <c.bailiff@awayweb.com>
+	and Akim Demaille  <akim@epita.fr>
+
+	* data/bison.simple.new (yyerrlab1): Be sure to pop and destroy
+	what's left on the stack when the error recovery hits EOF.
+	* tests/actions.at (Destructors): Complete to exercise this case.
+
+2002-06-17  Akim Demaille  <akim@epita.fr>
+
+	* data/m4sugar/m4sugar.m4 (m4_map): Recognize when the list of
+	arguments is really empty, not only equal to `[]'.
+	* src/symtab.h, src/symtab.c (symbol_t): `destructor' is a new
+	member.
+	(symbol_destructor_set): New.
+	* src/output.c (symbol_destructors_output): New.
+	* src/reader.h (brace_code_t, current_braced_code): New.
+	* src/scan-gram.l (BRACED_CODE): Use it to branch on...
+	(handle_dollar): Rename as...
+	(handle_action_dollar): this.
+	(handle_destructor_dollar): New.
+	* src/parse-gram.y (PERCENT_DESTRUCTOR): New.
+	(grammar_declaration): Use it.
+	* data/bison.simple (yystos): Is always defined.
+	(yydestructor): New.
+	* tests/actions.at (Destructors): New.
+	* tests/calc.at (_AT_CHECK_CALC_ERROR): Don't rely on egrep.
+
+2002-06-17  Akim Demaille  <akim@epita.fr>
+
+	* src/symlist.h, src/symlist.c (symbol_list_length): New.
+	* src/scan-gram.l (handle_dollar, handle_at): Compute the
+	rule_length only when needed.
+	* src/output.c (actions_output, token_definitions_output): Output
+	the full M4 block.
+	* src/symtab.c: Don't access directly to the symbol tag, use
+	symbol_tag_get.
+	* src/parse-gram.y: Use symbol_list_free.
+
+2002-06-17  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.h, src/reader.c (symbol_list, symbol_list_new)
+	(symbol_list_prepend, get_type_name): Move to...
+	* src/symlist.h, src/symlist.c (symbol_list_t, symbol_list_new)
+	(symbol_list_prepend, symbol_list_n_type_name_get): here.
+	Adjust all callers.
+	(symbol_list_free): New.
+	* src/scan-gram.l (handle_dollar): Takes a location.
+	* tests/input.at (Invalid $n): Adjust.
+
+2002-06-17  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.h, src/reader.c (symbol_list_new): Export it.
+	(symbol_list_prepend): New.
+	* src/parse-gram.y (%union): `list' is a new member.
+	(symbols.1): New, replaces...
+	(terms_to_prec.1, nterms_to_type.1): these.
+	* src/symtab.h, src/symtab.c (symbol_type_set, symbol_precedence_set)
+	Take a location as additional argument.
+	Adjust all callers.
+
+2002-06-15  Akim Demaille  <akim@epita.fr>
+
+	* src/parse-gram.y: Move %token in the declaration section so that
+	we don't depend upon CVS Bison.
+
+2002-06-15  Akim Demaille  <akim@epita.fr>
+
+	* src/state.h, src/state.c (state_rule_lookaheads_print): New.
+	* src/print.c (print_core): Use it.
+
+2002-06-15  Akim Demaille  <akim@epita.fr>
+
+	* src/conflicts.c (log_resolution): Accept the rule involved in
+	the sr conflicts instead of the lookahead number that points to
+	that rule.
+	(flush_reduce): Accept the current lookahead vector as argument,
+	instead of the index in LA.
+	(resolve_sr_conflict): Accept the current number of lookahead
+	bitset to consider for the STATE, instead of the index in LA.
+	(set_conflicts): Adjust.
+	* src/lalr.c, src/lalr.h, src/state.h: Comment changes.
+
+2002-06-15  Akim Demaille  <akim@epita.fr>
+
+	* src/state.h (state_t): Replace the `lookaheadsp' member, a
+	short, with `lookaheads' (bitsetv), `lookaheads_rule' (rule_t**).
+	Adjust all dependencies.
+	* src/lalr.c (initialize_lookaheads): Split into...
+	(states_lookaheads_count, states_lookaheads_initialize): these.
+	(lalr): Adjust.
+
+2002-06-15  Akim Demaille  <akim@epita.fr>
+
+	* src/gram.h, src/gram.c (grammar_rules_partial_print): New, eved
+	out of...
+	(grammar_rules_print): here.
+	* src/reduce.c (reduce_output): Use it.
+	* tests/reduce.at (Useless Rules, Reduced Automaton)
+	(Underivable Rules): Adjust.
+
+2002-06-15  Akim Demaille  <akim@epita.fr>
+
+	Copy BYacc's nice way to report the grammar.
+
+	* src/gram.h, src/gram.c (grammar_rhs_print, grammar_rules_print):
+	New.
+	Don't print the rules' location, it is confusing and useless.
+	(rule_print): Use grammar_rhs_print.
+	* src/print.c (print_grammar): Use grammar_rules_print.
+
+2002-06-15  Akim Demaille  <akim@epita.fr>
+
+	Complete and rationalize `useless thing' warnings.
+
+	* src/symtab.h, src/symtab.c (symbol_tag_get, symbol_tag_get_n)
+	(symbol_tag_print): New.
+	Use them everywhere in place of accessing directly the tag member.
+	* src/gram.h, src/gram.c (rule_print): New.
+	Use it where a rule used to be printed `by hand'.
+	* src/reduce.c (nonterminals_reduce): Report the use nonterminals.
+	(reduce_grammar_tables): Report the useless rules.
+	(reduce_print): Useless things are a warning, not an error.
+	Report it as such.
+	* tests/reduce.at (Useless Nonterminals, Useless Rules):
+	(Reduced Automaton, Underivable Rules): Adjust.
+	* tests/regression.at (Web2c Report, Web2c Report): Adjust.
+	* tests/conflicts.at (Unresolved SR Conflicts)
+	(Solved SR Conflicts): Adjust.
+
+2002-06-15  Akim Demaille  <akim@epita.fr>
+
+	Let symbols have a location.
+
+	* src/symtab.h, src/symtab.c (symbol_t): Location is a new member.
+	(getsym): Adjust.
+	Adjust all callers.
+	* src/complain.h, src/complain.c (complain_at, fatal_at, warn_at):
+	Use location_t, not int.
+	* src/symtab.c (symbol_check_defined): Take advantage of the
+	location.
+	* tests/regression.at (Invalid inputs): Adjust.
+
+2002-06-15  Akim Demaille  <akim@epita.fr>
+
+	* src/parse-gram.y (YYLLOC_DEFAULT, current_lhs_location): New.
+	(input): Don't try to initialize yylloc here, do it in the
+	scanner.
+	* src/scan-gram.l (YY_USER_INIT): Initialize yylloc.
+	* src/gram.h (rule_t): Change line and action_line into location
+	and action_location, of location_t type.
+	Adjust all dependencies.
+	* src/location.h, src/location.c (empty_location): New.
+	* src/reader.h, src/reader.c (grammar_start_symbol_set)
+	(grammar_symbol_append, grammar_rule_begin, grammar_rule_end)
+	(grammar_current_rule_symbol_append)
+	(grammar_current_rule_action_append): Expect a location as argument.
+	* src/reader.c (grammar_midrule_action): Adjust to attach an
+	action's location as dummy symbol location.
+	* src/symtab.h, src/symtab.c (startsymbol_location): New.
+	* tests/regression.at (Web2c Report, Rule Line Numbers): Adjust
+	the line numbers.
+
+2002-06-14  Akim Demaille  <akim@epita.fr>
+
+	Grammar declarations may be found in the grammar section.
+
+	* src/parse-gram.y (rules_or_grammar_declaration): New.
+	(declarations): Each declaration may end with a semicolon, not
+	just...
+	(grammar_declaration): `"%union"'.
+	(grammar): Branch to rules_or_grammar_declaration.
+
+2002-06-14  Akim Demaille  <akim@epita.fr>
+
+	* src/main.c (main): Invoke scanner_free.
+
+2002-06-14  Akim Demaille  <akim@epita.fr>
+
+	* src/output.c (m4_invoke): Extracted from...
+	(output_skeleton): here.
+	Free tempfile.
+
+2002-06-14  Akim Demaille  <akim@epita.fr>
+
+	* src/parse-gram.y (directives, directive, gram)
+	(grammar_directives, precedence_directives, precedence_directive):
+	Rename as...
+	(declarations, declaration, grammar, grammar_declaration)
+	(precedence_declaration, precedence_declarator): these.
+	(symbol_declaration): New.
+
+2002-06-14  Akim Demaille  <akim@epita.fr>
+
+	* src/files.c (action_obstack): Remove, unused.
+	(output_obstack): Remove it, and all its dependencies, as it is no
+	longer needed.
+	* src/reader.c (epilogue_set): Build the epilogue in the
+	muscle_obstack.
+	* src/output.h, src/output.c (muscle_obstack): Move to...
+	* src/muscle_tab.h, src/muscle_tab.h: here.
+	(muscle_init): Initialize muscle_obstack.
+	(muscle_free): New.
+	* src/main.c (main): Call it.
+
+2002-06-14  Akim Demaille  <akim@epita.fr>
+
+	* src/location.h: New, extracted from...
+	* src/reader.h: here.
+	* src/Makefile.am (noinst_HEADERS): Merge into
+	(bison_SOURCES): this.
+	Add location.h.
+	* src/parse-gram.y: Use location_t instead of Bison's.
+	* src/reader.h, src/reader.c (prologue_augment, epilogue_set):
+	Use location_t instead of ints.
+
+2002-06-14  Akim Demaille  <akim@epita.fr>
+
+	* data/bison.simple, data/bison.c++: Be sure to restore the
+	current #line when returning to the skeleton contents after having
+	exposed the input file's #line.
+
+2002-06-12  Akim Demaille  <akim@epita.fr>
+
+	* src/scan-gram.l (SC_BRACED_CODE): Don't use `<.*>', it is too
+	eager.
+	* tests/actions.at (Exotic Dollars): New.
+
+2002-06-12  Akim Demaille  <akim@epita.fr>
+
+	* src/scan-gram.l (SC_PROLOGUE): Don't eat characters amongst
+	['"/] too eagerly.
+	* tests/input.at (Torturing the Scanner): New.
+
+2002-06-11  Akim Demaille  <akim@epita.fr>
+
+	* src/scan-gram.l (YY_OBS_INIT): Remove, replace with...
+	[SC_COMMENT,SC_STRING,SC_CHARACTER,SC_BRACED_CODE,SC_PROLOGUE]
+	[SC_EPILOGUE]: Output the quadrigraphs only when not in a comment.
+	* src/reader.h, src/scan-gram.l (scanner_initialize): this.
+	* src/reader.c (reader): Use it.
+
+2002-06-11  Akim Demaille  <akim@epita.fr>
+
+	* src/scan-gram.l (YY_OBS_FINISH): Don't set yylval.
+	Adjust all callers.
+	(scanner_last_string_free): New.
+
+2002-06-11  Akim Demaille  <akim@epita.fr>
+
+	* src/scan-gram.l (YY_INIT, YY_GROW, YY_FINISH): Rename as...
+	(YY_OBS_INIT, YY_OBS_GROW, YY_OBS_FINISH): these.
+	(last_string, YY_OBS_FREE): New.
+	Use them when returning an ID.
+
+2002-06-11  Akim Demaille  <akim@epita.fr>
+
+	Have Bison grammars parsed by a Bison grammar.
+
+	* src/reader.c, src/reader.h (prologue_augment): New.
+	* src/reader.c (copy_definition): Remove.
+
+	* src/reader.h, src/reader.c (gram_start_symbol_set, prologue_augment)
+	(grammar_symbol_append, grammar_rule_begin, grammar_midrule_action)
+	(grammar_current_rule_prec_set, grammar_current_rule_check)
+	(grammar_current_rule_symbol_append)
+	(grammar_current_rule_action_append): Export.
+	* src/parse-gram.y (symbol_list_new, symbol_list_symbol_append_
+	(symbol_list_action_append): Remove.
+	Hook the routines from reader.
+	* src/scan-gram.l: In INITIAL, characters and strings are tokens.
+	* src/system.h (ATTRIBUTE_NORETURN, ATTRIBUTE_UNUSED): Now.
+
+	* src/reader.c (read_declarations): Remove, unused.
+
+	* src/parse-gram.y: Handle the epilogue.
+	* src/reader.h, src/reader.c (gram_start_symbol_set): Rename as...
+	(grammar_start_symbol_set): this.
+	* src/scan-gram.l: Be sure to ``use'' yycontrol to keep GCC quiet.
+	* src/reader.c (readgram): Remove, unused.
+	(reader): Adjust to insert eoftoken and axiom where appropriate.
+
+	* src/reader.c (copy_dollar): Replace with...
+	* src/scan-gram.h (handle_dollar): this.
+	* src/parse-gram.y: Remove `%thong'.
+
+	* src/reader.c (copy_at): Replace with...
+	* src/scan-gram.h (handle_at): this.
+
+	* src/complain.h, src/complain.c (warn_at, complain_at, fatal_at):
+	New.
+
+	* src/scan-gram.l (YY_LINES): Keep lineno synchronized for the
+	time being.
+
+	* src/reader.h, src/reader.c (grammar_rule_end): New.
+
+	* src/parse.y (current_type, current_class): New.
+	Implement `%nterm', `%token' support.
+	Merge `%term' into `%token'.
+	(string_as_id): New.
+	* src/symtab.h, src/symtab.c (symbol_make_alias): Don't pass the
+	type name.
+
+	* src/parse-gram.y: Be sure to handle properly the beginning of
+	rules.
+
+	* src/parse-gram.y: Handle %type.
+	* src/reader.c (grammar_rule_end): Call grammar_current_rule_check.
+
+	* src/parse-gram.y: More directives support.
+	* src/options.c: No longer handle source directives.
+
+	* src/parse-gram.y: Fix %output.
+
+	* src/parse-gram.y: Handle %union.
+	Use the prologue locations.
+	* src/reader.c (parse_union_decl): Remove.
+
+	* src/reader.h, src/reader.c (epilogue_set): New.
+	* src/parse-gram.y: Use it.
+
+	* data/bison.simple, data/bison.c++: b4_stype is now either not
+	defined, then default to int, or to the contents of %union,
+	without `union' itself.
+	Adjust.
+	* src/muscle_tab.c (muscle_init): Don't predefine `stype'.
+
+	* src/output.c (actions_output): Don't output braces, as they are
+	already handled by the scanner.
+
+	* src/scan-gram.l (SC_CHARACTER): Set the user_token_number of
+	characters to themselves.
+
+	* tests/reduce.at (Reduced Automaton): End the grammars with %% so
+	that the epilogue has a proper #line.
+
+	* src/parse-gram.y: Handle precedence/associativity.
+
+	* src/symtab.c (symbol_precedence_set): Requires the symbol to be
+	a terminal.
+	* src/scan-gram.l (SC_BRACED_CODE): Catch strings and characters.
+	* tests/calc.at: Do not use `%token "foo"' as it makes not sense
+	at all to define terminals that cannot be emitted.
+
+	* src/scan-gram.l: Escape M4 characters.
+
+	* src/scan-gram.l: Working properly with escapes in user
+	strings/characters.
+
+	* tests/torture.at (AT_DATA_TRIANGULAR_GRAMMAR)
+	(AT_DATA_HORIZONTAL_GRAMMAR): Respect the `%token ID NUM STRING'
+	grammar.
+	Use more modest sizes, as for the time being the parser does not
+	release memory, and therefore the process swallows a huge amount
+	of memory.
+
+	* tests/torture.at (AT_DATA_LOOKAHEADS_GRAMMAR): Adjust to the
+	stricter %token grammar.
+
+	* src/symtab.h (associativity): Add `undef_assoc'.
+	(symbol_precedence_set): Do nothing when passed an undef_assoc.
+	* src/symtab.c (symbol_check_alias_consistence): Adjust.
+
+	* tests/regression.at (Invalid %directive): Remove, as it is now
+	meaningless.
+	(Invalid inputs): Adjust to the new error messages.
+	(Token definitions): The new grammar doesn't allow too many
+	eccentricities.
+
+	* src/lex.h, src/lex.c: Remove.
+	* src/reader.c (lastprec, skip_to_char, read_signed_integer)
+	(copy_character, copy_string2, copy_string, copy_identifier)
+	(copy_comment, parse_token_decl, parse_type_decl, parse_assoc_decl)
+	(parse_muscle_decl, parse_dquoted_param, parse_skel_decl)
+	(parse_action): Remove.
+	* po/POTFILES.in: Adjust.
+
+2002-06-11  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (parse_action): Don't store directly into the
+	rule's action member: return the action as a string.
+	Don't require `rule_length' as an argument: compute it.
+	(grammar_current_rule_symbol_append)
+	(grammar_current_rule_action_append): New, eved out from
+	(readgram): here.
+	Remove `action_flag', `rulelength', unused now.
+
+2002-06-11  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (grammar_current_rule_prec_set).
+	(grammar_current_rule_check): New, eved out from...
+	(readgram): here.
+	Remove `xaction', `first_rhs': useless.
+	* tests/input.at (Type clashes): New.
+	* tests/existing.at (GNU Cim Grammar): Adjust.
+
+2002-06-11  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (grammar_midrule_action): New, Eved out from
+	(readgram): here.
+
+2002-06-11  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (grammar_rule_begin, previous_rule, current_rule):
+	New.
+	(readgram): Use them as replacement of inlined code, crule and
+	crule1.
+
+2002-06-11  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (grammar_end, grammar_symbol_append): New.
+	(readgram): Use them.
+	Make the use of `p' as local as possible.
+
+2002-06-10  Akim Demaille  <akim@epita.fr>
+
+	GCJ's parser requires the tokens to be defined before the prologue.
+
+	* data/bison.simple: Output the token definition before the user's
+	prologue.
+	* tests/regression.at (Braces parsing, Duplicate string)
+	(Mixing %token styles): Check the output from bison.
+	(Early token definitions): New.
+
+2002-06-10  Akim Demaille  <akim@epita.fr>
+
+	* src/symtab.c (symbol_user_token_number_set): Don't complain when
+	assigning twice the same user number to a token, so that we can
+	use it in...
+	* src/lex.c (lex): here.
+	Also use `symbol_class_set' instead of hand written code.
+	* src/reader.c (parse_assoc_decl): Likewise.
+
+2002-06-10  Akim Demaille  <akim@epita.fr>
+
+	* src/symtab.c, src/symtab.c (symbol_class_set)
+	(symbol_user_token_number_set): New.
+	* src/reader.c (parse_token_decl): Use them.
+	Use a switch instead of ifs.
+	Use a single argument.
+
+2002-06-10  Akim Demaille  <akim@epita.fr>
+
+	Remove `%thong' support as it is undocumented, unused, duplicates
+	`%token's job, and creates useless e-mail traffic with people who
+	want to know what it is, why it is undocumented, unused, and
+	duplicates `%token's job.
+
+	* src/reader.c (parse_thong_decl): Remove.
+	* src/options.c (option_table): Remove "thong".
+	* src/lex.h (tok_thong): Remove.
+
+2002-06-10  Akim Demaille  <akim@epita.fr>
+
+	* src/symtab.c, src/symtab.c (symbol_type_set)
+	(symbol_precedence_set): New.
+	* src/reader.c (parse_type_decl, parse_assoc_decl): Use them.
+	(value_components_used): Remove, unused.
+
+2002-06-09  Akim Demaille  <akim@epita.fr>
+
+	Move symbols handling code out of the reader.
+
+	* src/reader.h, src/reader.c (errtoken, undeftoken, eoftoken)
+	(axiom): Move to...
+	* src/symtab.h, src/symtab.c: here.
+
+	* src/gram.c (start_symbol): Remove: use startsymbol->number.
+	* src/reader.c (startval): Rename as...
+	* src/symtab.h, src/symtab.c (startsymbol): this.
+	* src/reader.c: Adjust.
+
+	* src/reader.c (symbol_check_defined, symbol_make_alias)
+	(symbol_check_alias_consistence, symbol_pack, symbol_translation)
+	(token_translations_init)
+	Move to...
+	* src/symtab.c: here.
+	* src/reader.c (packsymbols): Move to...
+	* src/symtab.h, src/symtab.c (symbols_pack): here.
+	* src/symtab.h, src/symtab.c (symbol_make_alias): Takes SYMVAL as
+	argument.
+
+2002-06-03  Akim Demaille  <akim@epita.fr>
+
+	* src/muscle_tab.c (muscle_insert, muscle_find): Declarations,
+	then statements.
+
+2002-06-03  Akim Demaille  <akim@epita.fr>
+
+	* src/muscle_tab.c (muscle_find, muscle_insert): Don't initialize
+	structs with non literals.
+	* src/scan-skel.l: never-interactive.
+	* src/conflicts.c (enum conflict_resolution_e): No trailing
+	comma.
+	* src/getargs.c (usage): Split long literal strings.
+	Reported by Hans Aberg.
+
+2002-05-28  Akim Demaille  <akim@epita.fr>
+
+	* data/bison.c++: Use C++ ostreams.
+	(cdebug_): New member.
+
+2002-05-28  Akim Demaille  <akim@epita.fr>
+
+	* src/output.c (output_skeleton): Be sure to allocate enough room
+	for `/' _and_ for `\0' in full_skeleton.
+
+2002-05-28  Akim Demaille  <akim@epita.fr>
+
+	* data/bison.c++: Catch up with bison.simple:
+	2002-05-24  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>
+	and Paul Eggert  <eggert@twinsun.com>: `error' handing.
+	2002-05-26  Akim Demaille  <akim@epita.fr>: stos_, token_number_,
+	and popping traces.
+
+2002-05-27  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>
+
+	* src/output.c (output_skeleton): Put an explicit path in front of
+	the skeleton file name, rather than relying on the -I directory,
+	to partially alleviate effects of having a skeleton file lying around
+	in the current directory.
+
+2002-05-27  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>
+
+	* src/conflicts.c (log_resolution): Correct typo:
+	obstack_printf should be obstack_fgrow1.
+
+2002-05-26  Akim Demaille  <akim@epita.fr>
+
+	* src/state.h (state_t): `solved_conflicts' is a new member.
+	* src/LR0.c (new_state): Set it to 0.
+	* src/conflicts.h, src/conflicts.c (print_conflicts)
+	(free_conflicts, solve_conflicts): Rename as...
+	(conflicts_print, conflicts_free, conflicts_solve): these.
+	Adjust callers.
+	* src/conflicts.c (enum conflict_resolution_e)
+	(solved_conflicts_obstack): New, used by...
+	(log_resolution): this.
+	Adjust to attach the conflict resolution to each state.
+	Complete the description with the precedence/associativity
+	information.
+	(resolve_sr_conflict): Adjust.
+	* src/print.c (print_state): Output its solved_conflicts.
+	* tests/conflicts.at (Unresolved SR Conflicts)
+	(Solved SR Conflicts): Exercise --report=all.
+
+2002-05-26  Akim Demaille  <akim@epita.fr>
+
+	* src/LR0.c, src/derives.c, src/gram.c, src/gram.h, src/lalr.c,
+	* src/nullable.c, src/output.c, src/print.c, src/print_graph.c,
+	* src/reader.c, src/reduce.c, src/state.h, src/symtab.h
+	(token_number_t, item_number_as_token_number)
+	(token_number_as_item_number, muscle_insert_token_number_table):
+	Rename as...
+	(symbol_number_t, item_number_as_symbol_number)
+	(symbol_number_as_item_number, muscle_insert_symbol_number_table):
+	these, since it is more appropriate.
+
+2002-05-26  Akim Demaille  <akim@epita.fr>
+
+	* tests/calc.at (AT_CHECK_CALC): Adjust: there are now additional
+	`Error:' lines.
+	* data/bison.simple (yystos) [YYDEBUG]: New.
+	(yyparse) [YYDEBUG]: Display the symbols which are popped during
+	error recovery.
+	* tests/regression.at (Web2c Actions): Adjust: yystos is output now.
+
+2002-05-25  Akim Demaille  <akim@epita.fr>
+
+	* doc/bison.texinfo (Debugging): Split into...
+	(Tracing): this new section, its former contents, and...
+	(Understanding): this new section.
+	* src/getargs.h, src/getargs.c (verbose_flag): Remove, replaced
+	by...
+	(report_flag): this.
+	Adjust all dependencies.
+	(report_args, report_types, report_argmatch): New.
+	(usage, getargs): Report/support -r, --report.
+	* src/options.h
+	(struct option_table_struct): Rename as..,
+	(struct option_table_s): this.
+	Rename the `set_flag' member to `flag' to match with getopt_long's
+	struct.
+	* src/options.c (option_table): Split verbose into an entry for
+	%verbose, and another for --verbose.
+	Support --report/-r, so remove -r from the obsolete --raw.
+	* src/print.c: Attach full item sets and lookaheads reports to
+	report_flag instead of trace_flag.
+	* lib/argmatch.h, lib/argmatch.c: New, from Fileutils 4.1.
+
+2002-05-24  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>
+	and Paul Eggert  <eggert@twinsun.com>
+
+	* data/bison.simple (yyparse): Correct error handling to conform to
+	POSIX and yacc.  Specifically, after syntax error is discovered,
+	do not reduce further before shifting the error token.
+	Clean up the code a bit by removing the labels yyerrdefault,
+	yyerrhandle, yyerrpop.
+	* NEWS: Document the above.
+
+2002-05-20  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>
+
+	* data/bison.simple (yyr1): Don't use yy_token_number_type as element
+	type; it isn't always big enough, since it doesn't necessarily
+	include non-terminals.
+	(yytranslate): Expand definition of yy_token_number_type, so that
+	the latter can be removed.
+	(yy_token_number_type): Remove, only one use.
+	* data/bison.c++ (r1_): Parallel change to yyr1 in bison.simple---
+	don't use TokenNumberType as element type.
+
+	* tests/regression.at: Modify expected output to agree with change
+	to yyr1 and yytranslate.
+
+2002-05-13  Florian Krohm  <florian@edamail.fishkill.ibm.com>
+
+	* src/reader.c (parse_action): Use copy_character instead of
+	obstack_1grow.
+
+2002-05-13  Akim Demaille  <akim@epita.fr>
+
+	* tests/regression.at (Token definitions): Prototype yylex and
+	yyerror.
+
+2002-05-12  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>
+
+	* src/scan-skel.l: Correct off-by-one error in handling of __oline__.
+	* data/bison.simple (b4_sint_type, b4_uint_type): Correct to reflect
+	32-bit arithmetic.
+	* data/bison.c++ (b4_sint_type, b4_uint_type): Ditto.
+
+2002-05-07  Akim Demaille  <akim@epita.fr>
+
+	* tests/synclines.at: Be sure to prototype yylex and yyerror to
+	avoid GCC warnings.
+
+2002-05-07  Akim Demaille  <akim@epita.fr>
+
+	Kill GCC warnings.
+
+	* src/reduce.c (nonterminals_reduce): Don't loop over RITEM: loop
+	over the RHS of each rule.
+	* src/gram.h, src/gram.c (nritems): Is `unsigned int', not int.
+	* src/state.h (state_t): Member `nitems' is unsigned short.
+	* src/LR0.c (get_state): Adjust.
+	* src/reader.c (packgram): Likewise.
+	* src/output.c (GENERATE_MUSCLE_INSERT_TABLE): `max' is of type
+	`Type'.
+	(muscle_insert_int_table): Remove, unused.
+	(prepare_rules): Remove `max'.
+
+2002-05-06  Akim Demaille  <akim@epita.fr>
+
+	* src/closure.c (print_firsts): Display of the symbol tags.
+	(bitmatrix_print): Move to...
+	* lib/bitsetv-print.h, lib/bitsetv-print.c (bitsetv_matrix_dump):
+	here.
+	* tests/sets.at (Nullable, Broken Closure, Firsts): Adjust.
+
+2002-05-06  Akim Demaille  <akim@epita.fr>
+
+	* src/muscle_tab.c (muscle_m4_output): Must return TRUE for
+	hash_do_for_each.
+
+2002-05-06  Akim Demaille  <akim@epita.fr>
+
+	* src/LR0.c (new_state, get_state): Instead of using the global
+	`kernel_size' and `kernel_base', have two new arguments:
+	`core_size' and `core'.
+	Adjust callers.
+
+2002-05-06  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (packgram): No longer end `ritem' with a 0
+	sentinel: it is not used.
+
+2002-05-05  Akim Demaille  <akim@epita.fr>
+
+	New experimental feature: display the lookaheads in the report and
+	graph.
+
+	* src/print (print_core): When --trace-flag, display the rules
+	lookaheads.
+	* src/print_graph.c (print_core): Likewise.
+	Swap the arguments.
+	Adjust caller.
+
+2002-05-05  Akim Demaille  <akim@epita.fr>
+
+	* tests/torture.at (Many lookaheads): New test.
+
+2002-05-05  Akim Demaille  <akim@epita.fr>
+
+	* src/output.c (GENERATE_OUTPUT_TABLE): Replace with...
+	(GENERATE_MUSCLE_INSERT_TABLE): this.
+	(output_int_table, output_unsigned_int_table, output_short_table)
+	(output_token_number_table, output_item_number_table): Replace with...
+	(muscle_insert_int_table, muscle_insert_unsigned_int_table)
+	(muscle_insert_short_table, muscle_insert_token_number_table)
+	(muscle_insert_item_number_table): these.
+	Adjust all callers.
+	(prepare_tokens): Don't free `translations', since...
+	* src/reader.h, src/reader.c (grammar_free): do it.
+	Move to...
+	* src/gram.h, src/gram.c (grammar_free): here.
+	* data/bison.simple, data/bison.c++: b4_token_number_max is now
+	b4_translate_max.
+
+2002-05-05  Akim Demaille  <akim@epita.fr>
+
+	* src/output.c (output_unsigned_int_table): New.
+	(prepare_rules): `i' is unsigned.
+	`prhs', `rline', `r2' are unsigned int.
+	Rename muscle `rhs_number_max' as `rhs_max'.
+	Output muscles `prhs_max', `rline_max', and `r2_max'.
+	Free rline and r1.
+	* data/bison.simple, data/bison.c++: Adjust to use these muscles
+	to compute types instead of constant types.
+	* tests/regression.at (Web2c Actions): Adjust.
+
+2002-05-04  Akim Demaille  <akim@epita.fr>
+
+	* src/symtab.h (SALIAS, SUNDEF): Rename as...
+	(USER_NUMBER_ALIAS, USER_NUMBER_UNDEFINED): these.
+	Adjust dependencies.
+	* src/output.c (token_definitions_output): Be sure not to output a
+	`#define 'a'' when fed with `%token 'a' "a"'.
+	* tests/regression.at (Token definitions): New.
+
+2002-05-03  Paul Eggert  <eggert@twinsun.com>
+
+	* data/bison.simple (b4_token_defines): Also define YYTOKENTYPE
+	for K&R C.
+
+2002-05-03  gettextize  <bug-gnu-gettext@gnu.org>
+
+	* Makefile.am (SUBDIRS): Remove intl.
+	(EXTRA_DIST): Add config/config.rpath.
+
+2002-05-03  Akim Demaille  <akim@epita.fr>
+
+	* data/bison.simple (m4_if): Don't output empty enums.
+	And actually, output valid enum definitions :(.
+
+2002-05-03  Akim Demaille  <akim@epita.fr>
+
+	* configure.bat: Remove, completely obsolete.
+	* Makefile.am (EXTRA_DIST): Adjust.
+	Don't distribute config.rpath...
+	* config/Makefile.am (EXTRA_DIST): Do it.
+
+2002-05-03  Akim Demaille  <akim@epita.fr>
+
+	* configure.in (GETTEXT_VERSION): New.
+	Suggested by Bruno Haible for the forthcoming Gettext 0.10.3.
+
+2002-05-03  Akim Demaille  <akim@epita.fr>
+
+	* data/bison.simple (b4_token_enum): New.
+	(b4_token_defines): Use it to output tokens both as #define and
+	enums.
+	Suggested by Paul Eggert.
+	* src/output.c (token_definitions_output): Don't output spurious
+	white spaces.
+
+2002-05-03  Akim Demaille  <akim@epita.fr>
+
+	* data/m4sugar/m4sugar.m4: Update from CVS Autoconf.
+
+2002-05-02  Robert Anisko  <robert@lrde.epita.fr>
+
+	* data/bison.c++: Adapt expansion of $s and @s to the C++ parser.
+	Update the stack class, give a try to deque as the default container.
+
+2002-05-02  Akim Demaille  <akim@epita.fr>
+
+	* data/bison.simple (yyparse): Do not implement @$ = @1.
+	(YYLLOC_DEFAULT): Adjust to do it.
+	* doc/bison.texinfo (Location Default Action): Fix.
+
+2002-05-02  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (parse_braces): Merge into...
+	(parse_action): this.
+
+2002-05-02  Akim Demaille  <akim@epita.fr>
+
+	* configure.in (ALL_LINGUAS): Remove.
+	* po/LINGUAS, hr.po: New.
+
+2002-05-02  Akim Demaille  <akim@epita.fr>
+
+	Remove the so called hairy (semantic) parsers.
+
+	* src/system.h (EXT_GUARD_C, EXT_STYPE_H): Remove.
+	* src/gram.h, src/gram.c (semantic_parser): Remove.
+	(rule_t): Remove the guard and guard_line members.
+	* src/lex.h (token_t): remove tok_guard.
+	* src/options.c (option_table): Remove %guard and %semantic_parser
+	support.
+	* src/output.c, src/output.h (guards_output): Remove.
+	(prepare): Adjust.
+	(token_definitions_output): Don't output the `T'
+	tokens (???).
+	(output_skeleton): Don't output the guards.
+	* src/files.c, src/files.c (attrsfile): Remove.
+	* src/reader.c (symbol_list): Remove the guard and guard_line
+	members.
+	Adjust dependencies.
+	(parse_guard): Remove.
+	* data/bison.hairy: Remove.
+	* doc/bison.texinfo (Environment Variables): Remove occurrences of
+	BISON_HAIRY.
+
+2002-05-02  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (copy_at, copy_dollarm parse_braces, parse_action)
+	(parse_guard): Rename the formal argument `stack_offset' as
+	`rule_length', which is more readable.
+	Adjust callers.
+	(copy_at, copy_dollar): Instead of outputting the hard coded
+	values of $$, $n and so forth, output invocation to b4_lhs_value,
+	b4_lhs_location, b4_rhs_value, and b4_rhs_location.
+	Note: this patch partially drops `semantic-parser' support: it
+	always does `rule_length - n', where semantic parsers ought to
+	always use `-n'.
+	* data/bison.simple, data/bison.c++ (b4_lhs_value)
+	(b4_lhs_location, b4_rhs_value, and b4_rhs_location: New.
+
+2002-05-02  Akim Demaille  <akim@epita.fr>
+
+	* configure.in (AC_INIT): Bump to 1.49b.
+	(AM_INIT_AUTOMAKE): Short invocation.
+
+2002-05-02  Akim Demaille  <akim@epita.fr>
+
+	Version 1.49a.
+
+2002-05-01  Akim Demaille  <akim@epita.fr>
+
+	* src/skeleton.h: Remove.
+
+2002-05-01  Akim Demaille  <akim@epita.fr>
+
+	* src/skeleton.h: Fix the #endif.
+	Reported by Magnus Fromreide.
+
+2002-04-26  Paul Eggert  <eggert@twinsun.com>
+
+	* data/bison.simple (YYSTYPE_IS_TRIVIAL, YYLTYPE_IS_TRIVIAL):
+	Define if we define YYSTYPE and YYLTYPE, respectively.
+	(YYCOPY): Fix [] quoting problem in the non-GCC case.
+
+2002-04-25  Robert Anisko  <robert@lrde.epita.fr>
+
+	* src/scan-skel.l: Postprocess quadrigraphs.
+
+	* src/reader.c (copy_character): New function, used to output
+	single characters while replacing `[' and `]' with quadrigraphs, to
+	avoid troubles with M4 quotes.
+	(copy_comment): Output characters with copy_character.
+	(read_additionnal_code): Likewise.
+	(copy_string2): Likewise.
+	(copy_definition): Likewise.
+
+	* tests/calc.at: Exercise M4 quoting.
+
+2002-04-25  Akim Demaille  <akim@epita.fr>
+
+	* tests/sets.at (AT_EXTRACT_SETS): Sed portability issue: no space
+	between `!' and the command.
+	Reported by Paul Eggert.
+
+2002-04-24  Robert Anisko  <robert@lrde.epita.fr>
+
+	* tests/calc.at: Exercise prologue splitting.
+
+	* data/bison.simple, data/bison.c++: Use `b4_pre_prologue' and
+	`b4_post_prologue' instead of `b4_prologue'.
+
+	* src/output.c (prepare): Add the `pre_prologue' and `post_prologue'
+	muscles.
+	(output): Free pre_prologue_obstack and post_prologue_obstack.
+	* src/files.h, src/files.c (attrs_obstack): Remove.
+	(pre_prologue_obstack, post_prologue_obstack): New.
+	* src/reader.c (copy_definition): Add a parameter to specify the
+	obstack to fill, instead of using attrs_obstack unconditionally.
+	(read_declarations): Pass pre_prologue_obstack to copy_definition if
+	`%union' has not yet been seen, pass post_prologue_obstack otherwise.
+
+2002-04-23  Paul Eggert  <eggert@twinsun.com>
+
+	* data/bison.simple: Remove unnecessary commentary and white
+	space differences from 1_29-branch.
+	Depend on YYERROR_VERBOSE, not defined (YYERROR_VERBOSE).
+
+	(union yyalloc, YYSTACK_GAP_MAX, YYSTACK_BYTES, YYCOPY,
+	YYSTACK_RELOCATE): Do not define if yyoverflow is defined, or
+	if this is a C++ parser and YYSTYPE or YYLTYPE has nontrivial
+	constructors or destructors.
+
+	(yyparse) [! defined YYSTACK_RELOCATE]: Do not relocate the stack.
+
+2002-04-23  Akim Demaille  <akim@epita.fr>
+
+	* tests/sets.at (AT_EXTRACT_SETS): Don't use 8 char long sed labels.
+	* tests/synclines.at (AT_TEST_SYNCLINE): Be robust to GCC's
+	location with columns.
+	* tests/conflicts.at (%nonassoc and eof): Don't use `error.h'.
+	All reported by Paul Eggert.
+
+2002-04-22  Akim Demaille  <akim@epita.fr>
+
+	* src/reduce.c (dump_grammar): Move to...
+	* src/gram.h, src/gram.c (grammar_dump): here.
+	Be sure to separate long item numbers.
+	Don't read the members of a rule's prec if its nil.
+
+2002-04-22  Akim Demaille  <akim@epita.fr>
+
+	* src/output.c (table_size, table_grow): New.
+	(MAXTABLE): Remove, replace uses with table_size.
+	(pack_vector): Instead of dying when the table is too big, grow it.
+
+2002-04-22  Akim Demaille  <akim@epita.fr>
+
+	* data/bison.simple (yyr1): Its type is that of a token number.
+	* data/bison.c++ (r1_): Likewise.
+	* tests/regression.at (Web2c Actions): Adjust.
+
+2002-04-22  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (token_translations_init): 256 is now the default
+	value for the error token, i.e., it will be assigned another
+	number if the user assigned 256 to one of her tokens.
+	(reader): Don't force 256 to error.
+	* doc/bison.texinfo (Symbols): Adjust.
+	* tests/torture.at (AT_DATA_HORIZONTAL_GRAMMAR)
+	(AT_DATA_TRIANGULAR_GRAMMAR): Number the tokens as 1, 2, 3
+	etc. instead of 10, 20, 30 (which was used to `jump' over error
+	(256) and undefined (2)).
+
+2002-04-22  Akim Demaille  <akim@epita.fr>
+
+	Propagate more token_number_t.
+
+	* src/gram.h (token_number_as_item_number)
+	(item_number_as_token_number): New.
+	* src/output.c (GENERATE_OUTPUT_TABLE): New.
+	Use it to create output_item_number_table and
+	output_token_number_table.
+	* src/LR0.c, src/derives.c, src/gram.c, src/gram.h, src/lalr.c,
+	* src/lex.c, src/nullable.c, src/output.c, src/print.c,
+	* src/print_graph.c, src/reader.c, src/reduce.c, src/state.h,
+	* src/symtab.c, src/symtab.h: Use token_number_t instead of shorts.
+
+2002-04-22  Akim Demaille  <akim@epita.fr>
+
+	* src/output.h, src/output.c (get_lines_number): Remove.
+
+2002-04-19  Akim Demaille  <akim@epita.fr>
+
+	* doc/bison.texinfo (Actions): Make clear that `|' is not the same
+	as Lex/Flex'.
+	(Debugging): More details about enabling the debugging features.
+	(Table of Symbols): Describe $$, $n, @$, and @n.
+	Suggested by Tim Josling.
+
+2002-04-19  Akim Demaille  <akim@epita.fr>
+
+	* doc/bison.texinfo: Remove the uses of the obsolete @refill.
+
+2002-04-10  Akim Demaille  <akim@epita.fr>
+
+	* src/system.h: Rely on HAVE_LIMITS_H.
+	Suggested by Paul Eggert.
+
+2002-04-09  Akim Demaille  <akim@epita.fr>
+
+	* tests/calc.at (_AT_CHECK_CALC_ERROR): Receive as argument the
+	full stderr, and strip it according to the bison options, instead
+	of composing the error message from different bits.
+	This makes it easier to check for several error messages.
+	Adjust all the invocations.
+	Add an invocation exercising the error token.
+	Add an invocation demonstrating a stupid error message.
+	(_AT_DATA_CALC_Y): Follow the GCS: initial column is 1, not 0.
+	Adjust the tests.
+	Error message are for stderr, not stdout.
+
+2002-04-09  Akim Demaille  <akim@epita.fr>
+
+	* src/gram.h, src/gram.c (error_token_number): Remove, use
+	errtoken->number.
+	* src/reader.c (reader): Don't specify the user token number (2)
+	for $undefined, as it uselessly prevents using it.
+	* src/gram.h (token_number_t): Move to...
+	* src/symtab.h: here.
+	(state_t.number): Is a token_number_t.
+	* src/print.c, src/reader.c: Use undeftoken->number instead of
+	hard coded 2.
+	(Even though this 2 is not the same as above: the number of the
+	undeftoken remains being 2, it is its user token number which
+	might not be 2).
+	* src/output.c (prepare_tokens): Rename the `maxtok' muscle with
+	`user_token_number_max'.
+	Output `undef_token_number'.
+	* data/bison.simple, data/bison.c++: Use them.
+	Be sure to map invalid yylex return values to
+	`undef_token_number'.  This saves us from gratuitous SEGV.
+
+	* tests/conflicts.at (Solved SR Conflicts)
+	(Unresolved SR Conflicts): Adjust.
+	* tests/regression.at (Web2c Actions): Adjust.
+
+2002-04-08  Akim Demaille  <akim@epita.fr>
+
+	* data/bison.c++: s/b4_item_number_max/b4_rhs_number_max/.
+	Adding #line.
+	Remove the duplicate `typedefs'.
+	(RhsNumberType): Fix the declaration and various other typos.
+	Use __ofile__.
+	* data/bison.simple: Use __ofile__.
+	* src/scan-skel.l: Handle __ofile__.
+
+2002-04-08  Akim Demaille  <akim@epita.fr>
+
+	* src/gram.h (item_number_t): New, the type of item numbers in
+	RITEM.  Note that it must be able to code symbol numbers as
+	positive number, and the negation of rule numbers as negative
+	numbers.
+	Adjust all dependencies (pretty many).
+	* src/reduce.c (rule): Remove this `short *' pointer: use
+	item_number_t.
+	* src/system.h (MINSHORT, MAXSHORT): Remove.
+	Include `limits.h'.
+	Adjust dependencies to using SHRT_MAX and SHRT_MIN.
+	(shortcpy): Remove.
+	(MAXTABLE): Move to...
+	* src/output.c (MAXTABLE): here.
+	(prepare_rules): Use output_int_table to output rhs.
+	* data/bison.simple, data/bison.c++: Adjust.
+	* tests/torture.at (Big triangle): Move the limit from 254 to
+	500.
+	* tests/regression.at (Web2c Actions): Ajust.
+
+	Trying with bigger grammars shows various phenomena: at 3000 (28Mb
+	of grammar file) bison is killed by my system, at 2000 (12Mb) bison
+	passes, but produces negative #line number, once fixed, GCC is
+	killed while compiling 14Mb, at 1500 (6.7 Mb of grammar, 8.2Mb of
+	C), it passes.
+	* src/state.h (state_h): Code input lines on ints, not shorts.
+
+2002-04-08  Akim Demaille  <akim@epita.fr>
+
+	* src/reduce.c (reduce_grammar): First reduce the nonterminals,
+	and then the grammar.
+
+2002-04-08  Akim Demaille  <akim@epita.fr>
+
+	* src/system.h: No longer using strndup.
+
+2002-04-07  Akim Demaille  <akim@epita.fr>
+
+	* src/muscle_tab.h (MUSCLE_INSERT_LONG_INT): New.
+	* src/output.c (output_table_data): Return the longest number.
+	(prepare_tokens): Output `token_number_max').
+	* data/bison.simple, data/bison.c++ (b4_sint_type, b4_uint_type):
+	New.
+	Use them to define yy_token_number_type/TokenNumberType.
+	Use this type for yytranslate.
+	* tests/torture.at (Big triangle): Push the limit from 124 to
+	253.
+	* tests/regression.at (Web2c Actions): Adjust.
+
+2002-04-07  Akim Demaille  <akim@epita.fr>
+
+	* tests/torture.at (Big triangle): New.
+	(GNU AWK Grammar, GNU Cim Grammar): Move to...
+	* tests/existing.at: here.
+
+2002-04-07  Akim Demaille  <akim@epita.fr>
+
+	* src/gram.h, src/gram.c (nitems): Remove, it is an alias of
+	nritems.
+	Adjust dependencies.
+
+2002-04-07  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c: Normalize increments to prefix form.
+
+2002-04-07  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c, symtab.c: Remove debugging code.
+
+2002-04-07  Akim Demaille  <akim@epita.fr>
+
+	Rename all the `bucket's as `symbol_t'.
+
+	* src/gram.c, src/gram.h, src/lex.c, src/lex.h, src/output.c,
+	* src/reader.c, src/reader.h, src/reduce.c, src/state.h,
+	* src/symtab.c, src/symtab.h (bucket): Rename as...
+	(symbol_t): this.
+	(symbol_list_new, bucket_check_defined, bucket_make_alias)
+	(bucket_check_alias_consistence, bucket_pack, bucket_translation)
+	(bucket_new, bucket_free, hash_compare_bucket, hash_bucket)
+	(buckets_new, buckets_free, buckets_do): Rename as...
+	(symbol_list_new, symbol_check_defined, symbol_make_alias)
+	(symbol_check_alias_consistence, symbol_pack, symbol_translation)
+	(symbol_new, symbol_free, hash_compare_symbol_t, hash_symbol_t)
+	(symbols_new, symbols_free, symbols_do): these.
+
+2002-04-07  Akim Demaille  <akim@epita.fr>
+
+	Use lib/hash for the symbol table.
+
+	* src/gram.c (ntokens): Initialize to 1, to reserve a slot for
+	EOF.
+	* src/lex.c (lex): Set the `number' member of new terminals.
+	* src/reader.c (bucket_check_defined, bucket_make_alias)
+	(bucket_check_alias_consistence, bucket_translation): New.
+	(reader, grammar_free, readgram, token_translations_init)
+	(packsymbols): Adjust.
+	(reader): Number the predefined tokens.
+	* src/reduce.c (inaccessable_symbols): Just use hard coded numbers
+	for predefined tokens.
+	* src/symtab.h (bucket): Remove all the hash table related
+	members.
+	* src/symtab.c (symtab): Replace by...
+	(bucket_table): this.
+	(bucket_new, bucket_free, hash_compare_bucket, hash_bucket)
+	(buckets_new, buckets_do): New.
+
+2002-04-07  Akim Demaille  <akim@epita.fr>
+
+	* src/gram.c (nitems, nrules, nsyms, ntokens, nvars, nritems)
+	(start_symbol, max_user_token_number, semantic_parser)
+	(error_token_number): Initialize.
+	* src/reader.c (grammar, start_flag, startval, typed, lastprec):
+	Initialize.
+	(reader): Don't.
+	(errtoken, eoftoken, undeftoken, axiom): Extern.
+
+2002-04-07  Akim Demaille  <akim@epita.fr>
+
+	* src/gram.h (rule_s): prec and precsym are now pointers
+	to the bucket giving the priority/associativity.
+	Member `associativity' removed: useless.
+	* src/reduce.c, src/conflicts.c: Adjust.
+
+2002-04-07  Akim Demaille  <akim@epita.fr>
+
+	* src/lalr.c, src/LR0.c, src/closure.c, src/gram.c, src/reduce.c:
+	Properly escape the symbols' TAG when outputting them.
+
+2002-04-07  Akim Demaille  <akim@epita.fr>
+
+	* src/lalr.h (LA): Is a bitsetv, not bitset*.
+
+2002-04-07  Akim Demaille  <akim@epita.fr>
+
+	* src/lalr.h, src/lalr.c (LAruleno): Replace with...
+	(LArule): this, which is an array to rule_t*.
+	* src/print.c, src/conflicts.c: Adjust.
+
+2002-04-07  Akim Demaille  <akim@epita.fr>
+
+	* src/gram.h (rule_t): Rename `number' as `user_number'.
+	`number' is a new member.
+	Adjust dependencies.
+	* src/reduce.c (reduce_grammar_tables): Renumber rule_t.number.
+
+2002-04-07  Akim Demaille  <akim@epita.fr>
+
+	As a result of the previous patch, it is no longer needed
+	to reorder ritem itself.
+
+	* src/reduce.c (reduce_grammar_tables): Don't sort RITEM.
+
+2002-04-07  Akim Demaille  <akim@epita.fr>
+
+	Be sure never to walk through RITEMS, but use only data related to
+	the rules themselves. RITEMS should be banished.
+
+	* src/output.c (output_token_translations): Rename as...
+	(prepare_tokens): this.
+	In addition to `translate', prepare the muscles `tname' and
+	`toknum', which were handled by...
+	(output_rule_data): this.
+	Remove, and move the remainder of its outputs into...
+	(prepare_rules): this new routines, which also merges content from
+	(output_gram): this.
+	(prepare_rules): Be sure never to walk through RITEMS.
+	(output_stos): Rename as...
+	(prepare_stos): this.
+	(output): Always invoke prepare_states, after all, just don't use it
+	in the output if you don't need it.
+
+2002-04-07  Akim Demaille  <akim@epita.fr>
+
+	* src/LR0.c (new_state): Display `nstates' as the name of the
+	newly created state.
+	Adjust to initialize first_state and last_state if needed.
+	Be sure to distinguish the initial from the final state.
+	(new_states): Create the itemset of the initial state, and use
+	new_state.
+	* src/closure.c (closure): Now that the initial state has its
+	items properly set, there is no need for a special case when
+	creating `ruleset'.
+
+	As a result, now the rule 0, reducing to $axiom, is visible in the
+	outputs.  Adjust the test suite.
+
+	* tests/conflicts.at (Solved SR Conflicts)
+	(Unresolved SR Conflicts): Adjust.
+	* tests/regression.at (Web2c Report, Rule Line Numbers): Idem.
+	* tests/conflicts.at (S/R in initial): New.
+
+2002-04-07  Akim Demaille  <akim@epita.fr>
+
+	* src/LR0.c (allocate_itemsets): Don't loop over ritem: loop over
+	the RHS of the rules.
+	* src/output.c (output_gram): Likewise.
+
+2002-04-07  Akim Demaille  <akim@epita.fr>
+
+	* src/gram.h (rule_t): `lhs' is now a pointer to the symbol's
+	bucket.
+	Adjust all dependencies.
+	* src/reduce.c (nonterminals_reduce): Don't forget to renumber the
+	`number' of the buckets too.
+	* src/gram.h: Include `symtab.h'.
+	(associativity): Move to...
+	* src/symtab.h: here.
+	No longer include `gram.h'.
+
+2002-04-07  Akim Demaille  <akim@epita.fr>
+
+	* src/gram.h, src/gram.c (rules_rhs_length): New.
+	(ritem_longest_rhs): Use it.
+	* src/gram.h (rule_t): `number' is a new member.
+	* src/reader.c (packgram): Set it.
+	* src/reduce.c (reduce_grammar_tables): Move the useless rules at
+	the end of `rules', and count them out of `nrules'.
+	(reduce_output, dump_grammar): Adjust.
+	* src/print.c (print_grammar): It is no longer needed to check for
+	the usefulness of a rule, as useless rules are beyond `nrules + 1'.
+	* tests/reduce.at (Reduced Automaton): New test.
+
+2002-04-07  Akim Demaille  <akim@epita.fr>
+
+	* src/reduce.c (inaccessable_symbols): Fix a buglet: because of a
+	lacking `+ 1' to nrules, Bison reported as useless a token if it
+	was used solely to set the precedence of the last rule...
+
+2002-04-07  Akim Demaille  <akim@epita.fr>
+
+	* data/bison.c++, data/bison.simple: Don't output the current file
+	name in #line, to avoid useless diffs between two identical
+	outputs under different names.
+
+2002-04-07  Akim Demaille  <akim@epita.fr>
+
+	* src/closure.c, src/print.c, src/reader.c, src/reduce.c:
+	Normalize loops to using `< nrules + 1', not `<= nrules'.
+
+2002-04-07  Akim Demaille  <akim@epita.fr>
+
+	* TODO: Update.
+
+2002-04-07  Akim Demaille  <akim@epita.fr>
+
+	* src/output.c, src/reader.c, src/symtab.c, src/symtab.h: Rename
+	bucket.value as bucket.number.
+
+2002-04-07  Akim Demaille  <akim@epita.fr>
+
+	* src/closure.c, src/derives.c, src/gram.h, src/lalr.c,
+	* src/nullable.c, src/output.c, src/print.c, src/print_graph.c,
+	* src/reader.c, src/reduce.c: Let rule_t.rhs point directly to the
+	RHS, instead of being an index in RITEMS.
+
+2002-04-04  Paul Eggert  <eggert@twinsun.com>
+
+	* doc/bison.texinfo: Update copyright date.
+	(Rpcalc Lexer, Symbols, Token Decl): Don't assume ASCII.
+	(Symbols): Warn about running Bison in one character set,
+	but compiling and/or running in an incompatible one.
+	Warn about character code 256, too.
+
+2002-04-03  Paul Eggert  <eggert@twinsun.com>
+
+	* src/bison.data (YYSTACK_ALLOC): Depend on whether
+	YYERROR_VERBOSE is nonzero, not whether it is defined.
+
+	Merge changes from bison-1_29-branch.
+
+2002-03-20  Paul Eggert  <eggert@twinsun.com>
+
+	Merge fixes from Debian bison_1.34-1.diff.
+
+	* configure.in (AC_PREREQ): 2.53.
+
+2002-03-20  Akim Demaille  <akim@epita.fr>
+
+	* src/conflicts.c (log_resolution): Argument `resolution' is const.
+
+2002-03-19  Paul Eggert  <eggert@twinsun.com>
+
+	* src/bison.simple (YYCOPY): New macro.
+	(YYSTACK_RELOCATE): Use it.
+	Remove Type arg; no longer needed.  All callers changed.
+	(yymemcpy): Remove; no longer needed.
+
+	* Makefile.am (AUTOMAKE_OPTIONS): 1.6.
+	* doc/Makefile.am (AUTOMAKE_OPTIONS): Remove.
+
+2002-03-19  Akim Demaille  <akim@epita.fr>
+
+	Test and fix the #line outputs.
+
+	* tests/atlocal.at (GCC): New.
+	* tests/synclines.at (AT_TEST_SYNCLINE): New macro.
+	(Prologue synch line, %union synch line, Postprologue synch line)
+	(Action synch line, Epilogue synch line): New tests.
+	* src/reader.c (parse_union_decl): Define the muscle stype_line.
+	* data/bison.simple, data/bison.c++: Use it.
+
+2002-03-19  Akim Demaille  <akim@epita.fr>
+
+	* tests/regression.at (%nonassoc and eof, Unresolved SR Conflicts)
+	(Solved SR Conflicts, %expect not enough, %expect right)
+	(%expect too much): Move to...
+	* tests/conflicts.at: this new file.
+
+2002-03-19  Akim Demaille  <akim@epita.fr>
+
+	* data/m4sugar/m4sugar.m4: Update from CVS Autoconf.
+	* data/bison.simple, data/bison.c++: Handle the `#define' part, so
+	that we can move to enums for instance.
+	* src/output.c (token_definitions_output): Output a list of
+	`token-name, token-number' instead of the #define.
+	(output_skeleton): Name this list `b4_tokens', not `b4_tokendefs'.
+
+2002-03-14  Akim Demaille  <akim@epita.fr>
+
+	Use Gettext 0.11.1.
+
+2002-03-09  Robert Anisko  <robert@lrde.epita.fr>
+
+	* data/bison.c++: Make the user able to add members to the generated
+	parser by subclassing.
+
+2002-03-05  Robert Anisko  <robert@lrde.epita.fr>
+
+	* src/reader.c (read_additionnal_code): `c' should be an integer, not
+	a character.
+	Reported by Nicolas Tisserand and Nicolas Burrus.
+
+2002-03-04  Robert Anisko  <robert@lrde.epita.fr>
+
+	* src/reader.c: Warn about lacking semi-colons, do not complain.
+
+2002-03-04  Robert Anisko  <robert@lrde.epita.fr>
+
+	* data/bison.c++: Remove a debug line.
+
+2002-03-04  Robert Anisko  <robert@lrde.epita.fr>
+
+	* data/bison.c++: Unmerge value as yylval and value as yyval.  Unmerge
+	location as yylloc and location as yyloc.  Use YYLLOC_DEFAULT, and
+	provide a default implementation.
+
+2002-03-04  Akim Demaille  <akim@epita.fr>
+
+	* tests/input.at (Invalid $n, Invalid @n): Add the ending `;'.
+	* tests/output.at (AT_CHECK_OUTPUT): Likewise.
+	* tests/headers.at (AT_TEST_CPP_GUARD_H): Ditto.
+	* tests/semantic.at (Parsing Guards): Similarly.
+	* src/reader.at (readgram): Complain if the last rule is not ended
+	with a semi-colon.
+
+2002-03-04  Akim Demaille  <akim@epita.fr>
+
+	* src/warshall.h, src/warshall.c (bitmatrix_print): Move to...
+	* src/closure.c: here.
+	(set_firsts): Use bitsetv_reflexive_transitive_closure instead of
+	RTC.
+	* src/warshall.h, src/warshall.c: Remove.
+	* tests/sets.at (Broken Closure): Adjust.
+
+2002-03-04  Akim Demaille  <akim@epita.fr>
+
+	* src/output.c (output_skeleton): tempdir is const.
+	bytes_read is unused.
+
+2002-03-04  Akim Demaille  <akim@epita.fr>
+
+	* lib/bbitset.h, lib/bitset.c, lib/bitset.h, lib/bitsetv.c,
+	* lib/bitsetv.h, lib/ebitset.c, lib/lbitset.c, lib/sbitset.c:
+	Update.
+	From Michael Hayes.
+
+2002-03-04  Akim Demaille  <akim@epita.fr>
+
+	* src/closure.c (closure): `r' is unused.
+
+2002-03-04  Akim Demaille  <akim@epita.fr>
+
+	* tests/sets.at (Broken Closure): Add the ending `;'.
+	* src/reader.at (readgram): Complain if a rule is not ended with a
+	semi-colon.
+
+2002-03-04  Akim Demaille  <akim@epita.fr>
+
+	* src/conflicts.c (set_conflicts): Use bitset_disjoint_p.
+	(count_sr_conflicts): Use bitset_count.
+	* src/reduce.c (inaccessable_symbols): Ditto.
+	(bits_size): Remove.
+	* src/warshall.h, src/warshall.c: Convert to bitsetv.
+
+2002-03-04  Akim Demaille  <akim@epita.fr>
+
+	* src/closure.c, src/conflicts.c, src/lalr.c, src/print.c,
+	* src/reduce.c: Remove the `bitset_zero's following the
+	`bitset_create's, as now it is performed by the latter.
+
+2002-03-04  Akim Demaille  <akim@epita.fr>
+
+	* lib/bitset.c, lib/bitset.h, lib/bitsetv.c, lib/bitsetv.h,
+	* lib/ebitset.c, lib/ebitset.h, lib/lbitset.c, lib/lbitset.h,
+	* lib/sbitset.c, lib/sbitset.h, lib/bbitset.h: Update from the
+	latest sources from Michael.
+
+2002-03-04  Akim Demaille  <akim@epita.fr>
+
+	* src/output.c (output): Don't free the grammar.
+	* src/reader.c (grammar_free): New.
+	* src/main.c (main): Call it and don't free symtab here.
+
+2002-03-04  Akim Demaille  <akim@epita.fr>
+
+	* src/lex.c (parse_percent_token): Be sure to 0-end token_buffer
+	before returning.
+	Reported by Benoit Perrot.
+
+2002-03-04  Akim Demaille  <akim@epita.fr>
+
+	Use bitset operations when possible, not loops over bits.
+
+	* src/conflicts.c (set_conflicts, count_sr_conflicts): Use
+	bitset_or.
+	* src/print.c (print_reductions): Use bitset_and, bitset_andn.
+	* src/reduce.c (useless_nonterminals): Formatting changes.
+	* src/warshall.c (TC): Use bitset_or.
+
+2002-03-04  Akim Demaille  <akim@epita.fr>
+
+	* src/lalr.h, src/lalr.c (tokensetsize): Remove, unused.
+	* src/system.h (BITS_PER_WORD, WORDSIZE, SETBIT, RESETBIT, BITISSET):
+	Ditto.
+
+2002-03-04  Akim Demaille  <akim@epita.fr>
+
+	* src/lalr.c (F): Now a bitset*.
+	Adjust all dependencies.
+
+2002-03-04  Akim Demaille  <akim@epita.fr>
+
+	* src/conflicts.c (shiftset, lookaheadset): Now bitset.
+	Adjust all dependencies.
+
+2002-03-04  Akim Demaille  <akim@epita.fr>
+
+	* src/L0.c, src/LR0.h (nstates): Be size_t.
+	Adjust comparisons (signed vs unsigned).
+	* src/conflics.c, src/lalr.c, src/lalr.h, src/output.c (LA): Now a
+	bitset*.
+	Adjust all dependencies.
+
+2002-03-04  Akim Demaille  <akim@epita.fr>
+
+	* src/closure.c (firsts): Now, also a bitset.
+	Adjust all dependencies.
+	(varsetsize): Remove, now unused.
+	* src/warshall.h, src/warshall.c: Now work on arrays of bitsets.
+
+2002-03-04  Akim Demaille  <akim@epita.fr>
+
+	* src/print.c: Convert to use bitset.h, not hand coded iterations
+	over ints.
+
+2002-03-04  Akim Demaille  <akim@epita.fr>
+
+	* src/reduce.c: Convert to use bitset.h, not hand coded BSet.
+
+2002-03-04  Akim Demaille  <akim@epita.fr>
+
+	* src/closure.c (ruleset): Be a bitset.
+	(rulesetsize): Remove.
+
+2002-03-04  Akim Demaille  <akim@epita.fr>
+
+	* lib/bitset-int.h, lib/bitset.c, lib/bitset.h, lib/bitsetv.c,
+	* lib/bitsetv.h, lib/ebitset.c, lib/ebitset.h, lib/lbitset.c,
+	* lib/lbitset.h, lib/sbitset.c, lib/sbitset.h: New.
+	* src/closure.c (fderives): Be an array of bitsets.
+
+2002-02-28  Robert Anisko  <robert@lrde.epita.fr>
+
+	* data/bison.c++: Merge the two generated headers.  Insert a copyright
+	notice in each output file.
+
+2002-02-28  Akim Demaille  <akim@epita.fr>
+
+	* data/bison.c++: Copy the prologue of bison.simple to fetch
+	useful M4 definitions, such as b4_header_guard.
+
+2002-02-25  Akim Demaille  <akim@epita.fr>
+
+	* src/getargs.c (version): Give the name of the authors, and use a
+	translator friendly scheme for the bgr
+	copyright notice.
+
+2002-02-25  Akim Demaille  <akim@epita.fr>
+
+	* src/output.c (header_output): Remove, now handled completely via
+	M4.
+
+2002-02-25  Akim Demaille  <akim@epita.fr>
+
+	* m4/m4.m4: New, from CVS Autoconf.
+	* configure.in: Invoke it.
+	* src/output.c (output_skeleton): Use its result instead of the
+	hard coded name.
+
+2002-02-25  Akim Demaille  <akim@epita.fr>
+
+	* lib/tempname.c, lib/mkstemp.c, m4/mkstemp.m4: New, stolen from
+	Fileutils 4.1.5.
+	* configure.in: Invoke UTILS_FUNC_MKSTEMP.
+	* src/output.c (output_skeleton): Use mkstemp to create a real
+	temporary file.
+	Move the filling of `skeleton' and its muscle to...
+	(prepare): here.
+	(output): Move the definition of the prologue muscle to...
+	(prepare): here.
+	* src/system.h (DEFAULT_TMPDIR): New.
+
+2002-02-14  Paul Eggert  <eggert@twinsun.com>
+
+	Remove the support for C++ namespace cleanliness; it was
+	causing more problems than it was curing, since it didn't work
+	properly on some nonstandard C++ compilers.  This can wait
+	for a proper C++ parser.
+
+	* NEWS: Document this.
+	* doc/bison.texinfo (Bison Parser, Debugging): Remove special mention
+	of C++, as it's treated like C now.
+	* src/bison.simple (YYSTD): Remove.
+	(YYSIZE_T, YYFPRINTF, YYPARSE_PARAM_ARG, YYPARSE_PARAM_DECL):
+	Treat C++ just like Standard C instead of trying to support
+	namespace cleanliness.
+
+2002-02-14  Akim Demaille  <akim@epita.fr>
+
+	* tests/regression.at (else): Adjust to Andreas' change.
+
+2002-02-14  Akim Demaille  <akim@epita.fr>
+
+	* lib/Makefile.am (EXTRA_DIST): Ship strnlen.c.
+
+2002-02-13  Andreas Schwab  <schwab@suse.de>
+
+	* src/output.c (output_rule_data): Don't output NULL, it might
+	not be defined yet.
+
+2002-02-11  Robert Anisko  <robert@lrde.epita.fr>
+
+	* data/bison.c++ (YYDEBUG, YYERROR_VERBOSE): After the prologue.
+	(Copyright notice): Update.
+
+2002-02-11  Akim Demaille  <akim@epita.fr>
+
+	* tests/regression.at (%nonassoc and eof): Don't include
+	nonportable headers.
+
+2002-02-08  Robert Anisko  <robert@lrde.epita.fr>
+
+	* data/bison.c++: Correct error recovery.  Make the user able to
+	initialize the starting location.
+
+2002-02-07  Akim Demaille  <akim@epita.fr>
+
+	* tests/input.at: New.
+
+2002-02-07  Robert Anisko  <robert@lrde.epita.fr>
+
+	* data/bison.c++: Replace some direct m4 expansions by constants.  Be
+	more consistent when naming methods and variables.  Put preprocessor
+	directives around tables only needed for debugging.
+
+2002-02-07  Robert Anisko  <robert@lrde.epita.fr>
+
+	* data/bison.c++ (yy::b4_name::print_): New method, replaces yyprint in
+	C++ parsers.
+	(yy::b4_name::parse): Use print_.
+
+2002-02-07  Robert Anisko  <robert@lrde.epita.fr>
+
+	* data/bison.c++ (yy::b4_name::parse): Error recovery is back.
+
+2002-02-07  Robert Anisko  <robert@lrde.epita.fr>
+
+	* data/bison.c++ (yy::b4_name::error_): New method, replaces yyerror in
+	C++ parsers.
+	(yy::b4_name::parse): Build verbose error messages, and use error_.
+
+2002-02-06  Robert Anisko  <robert@lrde.epita.fr>
+
+	* data/bison.c++: Fix m4 quoting in comments.
+
+2002-02-06  Robert Anisko  <robert@lrde.epita.fr>
+
+	* data/bison.c++: Adjust the parser code.  Fix some muscles that were
+	not expanded by m4.
+
+2002-02-05  Akim Demaille  <akim@epita.fr>
+
+	* data/bison.c++: Adjust to the M4 back end.
+	More is certainly needed.
+
+2002-02-05  Akim Demaille  <akim@epita.fr>
+
+	Give a try to M4 as a back end.
+
+	* lib/readpipe.c: New, from wdiff.
+	* src/Makefile.am (DEFS): Define PKGDATADIR, not BISON_SIMPLE and
+	BISON_HAIRY.
+	* src/system.h (BISON_HAIRY, BISON_SIMPLE): Remove the DOS and VMS
+	specific values.  Now it is m4 that performs the lookup.
+	* src/parse-skel.y: Remove.
+	* src/muscle_tab.c, src/muscle_tab.h (muscles_m4_output): New.
+	* src/output.c (actions_output, guards_output)
+	(token_definitions_output): No longer keeps track of the output
+	line number, hence remove the second argument.
+	(guards_output): Check against the guard member of a rule, not the
+	action member.
+	Adjust callers.
+	(output_skeleton): Don't look for the skeleton location, let m4 do
+	that.
+	Create `/tmp/muscles.m4'.  This is temporary, a proper temporary
+	file will be used.
+	Invoke `m4' on m4sugar.m4, muscles.m4, and the skeleton.
+	(prepare): Given that for the time being changesyntax is not
+	usable in M4, rename the muscles using `-' to `_'.
+	Define `defines_flag', `output_parser_name' and `output_header_name'.
+	* src/output.h (actions_output, guards_output)
+	(token_definitions_output): Adjust prototypes.
+	* src/scan-skel.l: Instead of scanning the skeletons, it now
+	processes the output of m4: `__oline__' and `#output'.
+	* data/bison.simple: Adjust to be used by M4(sugar).
+	* tests/Makefile.am: Use check_SCRIPTS to make sure `bison' is up
+	to date.
+	* tests/bison.in: Use the secrete envvar `BISON_PKGDATADIR'
+	instead of the dead `BISON_SIMPLE' and `BISON_HAIRY'.
+	* data/m4sugar/m4sugar.m4, data/m4sugar/version.m4: New,
+	shamelessly stolen from CVS Autoconf.
+
+2002-02-05  Akim Demaille  <akim@epita.fr>
+
+	* lib/hash.c, lib/hash.h: Replace with Fileutils 4.1's version.
+	* configure.in: Check for the declarations of free and malloc.
+	* src/muscle_tab.c: Adjust.
+
+2002-02-05  Akim Demaille  <akim@epita.fr>
+
+	* src/muscle_tab.c (muscle_init): Don't default to NULL muscle
+	which have no values.
+
+2002-02-05  Akim Demaille  <akim@epita.fr>
+
+	* src/bison.simple, src/bison.hairy, src/bison.c++: Move to...
+	* data/: here.
+
+2002-01-29  Paul Eggert  <eggert@twinsun.com>
+
+	* src/bison.simple (YYSIZE_T): Do not define merely because
+	YYSTACK_USE_ALLOCA is nonzero or alloca or _ALLOCA_H are defined.
+	On some platforms, <alloca.h> does not declare YYSTD (size_t).
+
+2002-01-27  Akim Demaille  <akim@epita.fr>
+
+	Fix `%nonassoc and eof'.
+
+	* src/state.c (errs_dup): Aaaah!  The failure was due to bytes
+	which were not properly copied!  Replace
+	memcpy (res->errs, src->errs, src->nerrs);
+	with
+	memcpy (res->errs, src->errs, src->nerrs * sizeof (src->errs[0]));
+	!!!
+	* tests/regression.at (%nonassoc and eof): Adjust to newest
+	Autotest: `.' is not in the PATH.
+
+2002-01-27  Akim Demaille  <akim@epita.fr>
+
+	* tests/sets.at (AT_EXTRACT_SETS): New.
+	(Nullable): Use it.
+	(Firsts): New.
+
+2002-01-26  Akim Demaille  <akim@epita.fr>
+
+	* tests/actions.at, tests/calc.at, tests/headers.at,
+	* tests/torture.at: Adjust to the newest Autotest which no longer
+	forces `.' in the PATH.
+
+2002-01-25  Akim Demaille  <akim@epita.fr>
+
+	* tests/regression.at (%nonassoc and eof): New.
+	Suggested by Robert Anisko.
+
+2002-01-24  Akim Demaille  <akim@epita.fr>
+
+	Bison dumps core when trying to complain about broken input files.
+	Reported by Cris van Pelt.
+
+	* src/lex.c (parse_percent_token): Be sure to set token_buffer.
+	* tests/regression.at (Invalid input: 1, Invalid input: 2): Merge
+	into...
+	(Invalid inputs): Strengthen: exercise parse_percent_token.
+
+2002-01-24  Robert Anisko  <robert.anisko@epita.fr>
+
+	* src/Makefile.am: Add bison.c++.
+	* src/bison.c++: New skeleton.
+
+2002-01-21  Paolo Bonzini <bonzini@gnu.org>
+
+	* po/it.po: New.
+
+2002-01-21  Kees Zeelenberg  <kzlg@users.sourceforge.net>
+
+	* src/files.c (skeleton_find) [MSDOS]: Fix cp definition.
+
+2002-01-20  Marc Autret  <marc@gnu.org>
+
+	* src/files.c (compute_output_file_names): Fix
+
+2002-01-20  Marc Autret  <marc@gnu.org>
+
+	* tests/output.at: New test.
+	* src/files.c (compute_base_names): Don't map extensions when
+	the YACC flag is set, use defaults.
+	Reported by Evgeny Stambulchik.
+
+2002-01-20  Marc Autret  <marc@gnu.org>
+
+	* src/system.h: Need to define __attribute__ away for non-GCC
+	compilers as well (i.e., the vendor C compiler).
+	Suggested by Albert Chin-A-Young.
+
+2002-01-11  Tim Van Holder  <tim.van.holder@pandora.be>
+
+	* lib/hash.h, lib/hash.c: Renamed __P to PARAMS and used the
+	canonical definition.
+	* src/system.h: Use the canonical definition for PARAMS (avoids
+	a conflict with the macro from lib/hash.h).
+
+2002-01-11  Akim Demaille  <akim@epita.fr>
+
+	* configure.in: Use AC_FUNC_STRNLEN.
+	Fixes the failures observed on AIX 4.3 by H.Merijn Brand.
+
+2002-01-09  Akim Demaille  <akim@epita.fr>
+
+	* src/files.c, src/files.h (output_infix): New.
+	(tab_extension): Remove.
+	(compute_base_names): Compute the former, drop the latter.
+	* src/output.c (prepare): Insert the muscles `output-infix', and
+	`output-suffix'.
+	* src/parse-skel.y (string, string.1): New.
+	(section.header): Use it.
+	(section.yacc): Remove.
+	(prefix): Remove too.
+	* src/scan-skel.l: Adjust.
+	* src/bison.simple, src/bison.hairy: Adjust.
+
+2002-01-09  Akim Demaille  <akim@epita.fr>
+
+	* configure.in (WERROR_CFLAGS): Compute it.
+	* src/Makefile.am (CFLAGS): Pass it.
+	* tests/atlocal.in (CFLAGS): Idem.
+	* src/files.c: Fix a few warnings.
+	(get_extension_index): Remove, unused.
+
+2002-01-08  Akim Demaille  <akim@epita.fr>
+
+	* src/getargs.c (AS_FILE_NAME): New.
+	(getargs): Use it to convert DOSish file names.
+	* src/files.c (base_name): Rename as full_base_name to avoid
+	clashes with `base_name ()'.
+	(filename_split): New.
+	(compute_base_names): N-th rewrite, using filename_split.
+
+2002-01-08  Akim Demaille  <akim@epita.fr>
+
+	* lib/basename.c, lib/dirname.h, lib/dirname.c, lib/memrchr.c:
+	New, stolen from the Fileutils 4.1.
+	* lib/Makefile.am (libbison_a_SOURCES): Adjust.
+	* configure.in: Check for the presence of memrchr, and of its
+	prototype.
+
+2002-01-07  Tim Van Holder  <tim.van.holder@pandora.be>
+
+	* lib/hash.h (__P): Added definition for this macro.
+	* src/Makefile.am: Add parse-skel.c and scan-skel.c to
+	BUILT_SOURCES, to ensure they are generated first.
+	* src/parse-skel.y: Use YYERROR_VERBOSE instead of
+	%error-verbose to allow bootstrapping with bison 1.30x.
+
+2002-01-06  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (parse_braces): Don't fetch the next char, the
+	convention is to fetch on entry.
+	* tests/torture.at (GNU Cim Grammar): Reintroduce their weird
+	'switch' without a following semicolon.
+	* tests/regression.at (braces parsing): New.
+
+2002-01-06  Akim Demaille  <akim@epita.fr>
+
+	Bison is dead wrong in its RR conflict reports.
+
+	* tests/torture.at (GNU Cim Grammar): New.
+	* src/conflicts.c (count_rr_conflicts): Fix.
+
+2002-01-06  Akim Demaille  <akim@epita.fr>
+
+	Creating package.m4 from configure.ac causes too many problems.
+
+	* tests/Makefile.am (package.m4): Create it by hand,
+	AC_CONFIG_TESTDIR no longer does in the most recent CVS Autoconf.
+
+2002-01-06  Akim Demaille  <akim@epita.fr>
+
+	* src/Makefile.am (bison_SOURCES): Add parse-skel.h and
+	skeleton.h.
+
+2002-01-04  Paul Eggert  <eggert@twinsun.com>
+
+	* doc/bison.texinfo (Debugging):
+	Remove YYSTDERR; it's no longer defined or used.
+	Also, s/cstdio.h/cstdio/.
+
+2002-01-03  Akim Demaille  <akim@epita.fr>
+
+	* tests/bison.in, tests/atlocal.in: Adjust to CVS Autoconf.
+
+2002-01-03  Akim Demaille  <akim@epita.fr>
+
+	* src/parse-skel.y (process_skeleton): Don't bind the parser's
+	tracing code to --trace, wait for a better --trace option, with
+	args.
+
+2002-01-03  Akim Demaille  <akim@epita.fr>
+
+	* src/bison.simple (YYSTDERR): Remove, replace `stderr'.
+	The ISO C++ standard is extremely clear about it: stderr is
+	considered a macro, not a regular symbol (see table 94 `Header
+	<cstdio> synopsis', [lib.c.files] 27.8.2 C Library files).
+	Therefore std:: does not apply to it.  It still does with fprintf.
+	Also, s/cstdio.h/cstdio/.
+
+2002-01-03  Akim Demaille  <akim@epita.fr>
+
+	* lib/quotearg.c: Use `#include "..."' instead of `#include <...>'
+	for non system headers.
+
+2002-01-02  Akim Demaille  <akim@epita.fr>
+
+	Equip the skeleton chain with location tracking, runtime trace,
+	pure parser and scanner.
+
+	* src/parse-skel.y: Request a pure parser, locations, and prefix
+	renaming.
+	(%union): Having several members with the same type does not help
+	type mismatches, simplify.
+	(YYPRINT, yyprint): New.
+	(yyerror): ``Rename'' (there is a #define yyerror skel_error) as...
+	(skel_error): this.
+	Handle locations.
+	* src/scan-skel.l: Adjust to these changes.
+	* src/skeleton.h (LOCATION_RESET, LOCATION_LINES, LOCATION_STEP)
+	(LOCATION_PRINT, skel_control_t): New.
+
+2001-12-30  Akim Demaille  <akim@epita.fr>
+
+	* src/parse-skel.y: Get rid of the shift/reduce conflict:
+	replace `gb' with BLANKS.
+	* src/scan-skel.l: Adjust.
+
+2001-12-30  Akim Demaille  <akim@epita.fr>
+
+	* src/system.h: We don't need nor want bcopy.
+	Throw away MS-DOS crap: we don't need getpid.
+	* configure.in: We don't need strndup.  It was even causing
+	problems: because Flex includes the headers *before* us,
+	_GNU_SOURCE is not defined by config.h, and therefore strndup was
+	not visible.
+	* lib/xstrndup.c: New.
+	* src/scan-skel.l: Use it.
+	Be sure to initialize yylval.muscle member when scanning a MUSCLE.
+	* src/parse-skel.y: Use %directives instead of #defines.
+
+2001-12-30  Akim Demaille  <akim@epita.fr>
+
+	* src/skeleton.h: New.
+	* src/output.c (output_parser, output_master_parser): Remove, dead
+	code.
+	* src/output.h (get_lines_number, actions_output, guards_output)
+	(token_definitions_output): Prototype them.
+	* src/parse-skel.y: Add the license notice.
+	Include output.h and skeleton.h.
+	(process_skeleton): Returns void, and takes a single parameter.
+	* src/scan-skel.l: Add the license notice.
+	Include skeleton.h.
+	Don't use %option yylineno: it seems that then Flex imagines
+	REJECT has been used, and therefore it won't reallocate its
+	buffers (which makes no other sense to me than a bug).  It results
+	in warnings for `unused: yy_flex_realloc'.
+
+2001-12-30  Robert Anisko  <robert.anisko@epita.fr>
+
+	* src/muscle_tab.h (MUSCLE_INSERT_INT, MUSCLE_INSERT_STRING)
+	(MUSCLE_INSERT_PREFIX): ...to there.
+	* src/output.c (MUSCLE_INSERT_INT, MUSCLE_INSERT_STRING)
+	(MUSCLE_INSERT_PREFIX): Move from here...
+
+	* src/bison.hairy: Add a section directive.  Put braces around muscle
+	names.  This parser skeleton is still broken, but Bison should not
+	choke on a bad muscle 'syntax'.
+	* src/bison.simple: Add a section directive.  Put braces around muscle
+	names.
+
+	* src/files.h (strsuffix, stringappend): Add declarations.
+	(tab_extension): Add declaration.
+	(short_base_name): Add declaration.
+
+	* src/files.c (strsuffix, stringappend): No longer static.  These
+	functions are used in the skeleton parser.
+	(tab_extension): New.
+	(compute_base_names): Use the computations done in this function
+	to guess if the generated parsers should have '.tab' in their
+	names.
+	(short_base_name): No longer static.
+
+	* src/output.c (output_skeleton): New.
+	(output): Disable call to output_master_parser, and give a try to
+	a new skeleton handling system.
+	(guards_output, actions_output): No longer static.
+	(token_definitions_output, get_lines_number): No longer static.
+
+	* configure.in: Use AM_PROG_LEX and AC_PROG_YACC.
+
+	* src/Makefile.am (bison_SOURCES): Add scan-skel.l and
+	parse-skel.y.
+
+	* src/parse-skel.y: New file.
+	* src/scan-skel.l: New file.
+
+2001-12-29  Akim Demaille  <akim@epita.fr>
+
+	%name-prefix is broken.
+
+	* src/files.c (spec_name_prefix): Initialize to NULL, not to "yy".
+	Adjust all dependencies.
+	* tests/headers.at (export YYLTYPE): Strengthen this test: use
+	%name-prefix.
+
+	Renaming yylval but not yylloc is not consistent.  Now we do.
+
+	* src/bison.simple: Prefix yylloc if used.
+	* doc/bison.texinfo (Decl Summary): Document that.
+
+2001-12-29  Akim Demaille  <akim@epita.fr>
+
+	* doc/bison.texinfo: Promote `%long-directive' over
+	`%long_directive'.
+	Remove all references to fixed-output-files, yacc is enough.
+
+2001-12-29  Akim Demaille  <akim@epita.fr>
+
+	* src/bison.simple: Define YYDEBUG and YYERROR_VERBOSE *after* the
+	user prologue.  These are defaults.
+	* tests/actions.at (Mid-rule actions): Make sure the user can
+	define YYDEBUG and YYERROR_VERBOSE.
+
+2001-12-29  Akim Demaille  <akim@epita.fr>
+
+	* src/output.c (header_output): Don't forget to export YYLTYPE and
+	yylloc.
+	* tests/headers.at (export YYLTYPE): New, make sure it does.
+	* tests/regression.at (%union and --defines, Invalid CPP headers):
+	Move to...
+	* tests/headers.at: here.
+
+2001-12-29  Akim Demaille  <akim@epita.fr>
+
+	* src/gram.h (rule_s): Member `assoc' is of type `associativity'.
+
+2001-12-29  Akim Demaille  <akim@epita.fr>
+
+	* tests/actions.at (Mid-rule actions): Output on a single line
+	instead of several.
+
+2001-12-29  Akim Demaille  <akim@epita.fr>
+
+	* doc/bison.texinfo: Formatting changes.
+
+2001-12-29  Akim Demaille  <akim@epita.fr>
+
+	Don't store the token defs in a muscle, just be ready to output it
+	on command.  Now possible via `symbols'.  Fixes a memory leak.
+
+	* src/output.c (token_definitions_output): New.
+	(output_parser, header_output): Use it.
+	* src/reader.c (symbols_save): Remove.
+
+2001-12-29  Akim Demaille  <akim@epita.fr>
+
+	* src/bison.simple: Do not provide a default for YYSTYPE and
+	YYLTYPE before the user's prologue.  Otherwise it's hardly... a
+	default.
+
+2001-12-29  Akim Demaille  <akim@epita.fr>
+
+	Mid-rule actions are simply... ignored!
+
+	* src/reader.c (readgram): Be sure to attach mid-rule actions to
+	the empty-rule associated to the dummy symbol, not to the host
+	rule.
+	* tests/actions.at (Mid-rule actions): New.
+
+2001-12-29  Akim Demaille  <akim@epita.fr>
+
+	Memory leak.
+
+	* src/reader.c (reader): Free grammar.
+
+2001-12-29  Akim Demaille  <akim@epita.fr>
+
+	Memory leak.
+
+	* src/LR0.c (new_itemsets): Don't allocate `shift_symbol' here,
+	since it allocates it for each state, although only one is needed.
+	(allocate_storage): Do it here.
+
+2001-12-29  Akim Demaille  <akim@epita.fr>
+
+	* src/options.h, src/options.c (create_long_option_table): Rename
+	as...
+	(long_option_table_new): this, with a clearer prototype.
+	(percent_table): Remove, unused,
+	* src/getargs.c (getargs): Adjust.
+
+2001-12-29  Akim Demaille  <akim@epita.fr>
+
+	* src/LR0.c, src/conflicts.c, src/lalr.c, src/lalr.h, src/output.c
+	* src/print.c, src/print_graph.c, src/state.h: Rename state_table
+	as states.
+
+2001-12-29  Akim Demaille  <akim@epita.fr>
+
+	* src/lalr.c (build_relations): Rename `states' as `states1'.
+	Sorry, I don't understand exactly what it is, no better name...
+
+2001-12-29  Akim Demaille  <akim@epita.fr>
+
+	* src/closure.c, src/conflicts.c, src/derives.c, src/gram.c
+	* src/gram.h, src/lalr.c, src/nullable.c, src/output.c, src/print.c
+	* src/print_graph.c, src/reader.c, src/reduce.c: Rename rule_table
+	as rules.
+
+2001-12-29  Akim Demaille  <akim@epita.fr>
+
+	* src/gram.c (rprec, rprecsym, rassoc): Remove, unused since long
+	ago.
+
+2001-12-29  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c, src/reader.h (user_toknums): Remove.
+	Adjust all users to use symbols[i]->user_token_number.
+
+2001-12-29  Akim Demaille  <akim@epita.fr>
+
+	* src/gram.c, src/gram.h (sprec, sassoc): Remove.
+	Adjust all users to use symbols[i]->prec or ->assoc.
+
+2001-12-29  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c, src/reader.h (tags): Remove.
+	Adjust all users to use symbols[i]->tag.
+
+2001-12-29  Akim Demaille  <akim@epita.fr>
+
+	* src/gram.h, src/gram.c (symbols): New, similar to state_table
+	and rule_table.
+	* src/reader.c (packsymbols): Fill this table.
+	Drop sprec.
+	* src/conflicts.c (resolve_sr_conflict): Adjust.
+	* src/reduce.c (reduce_grammar): Adjust: just sort symbols, a
+	single table.
+	Use symbols[i]->tag instead of tags[i].
+
+2001-12-29  Akim Demaille  <akim@epita.fr>
+
+	* tests/calc.at (_AT_DATA_CALC_Y): Also use %union.
+	In addition, put a comment in there, to replace...
+	* tests/regression.at (%union and C comments): Remove.
+
+2001-12-29  Akim Demaille  <akim@epita.fr>
+
+	* tests/regression.at (Web2c Actions): Blindly move the actual
+	output as expected output.  The contents *seem* right to me, but I
+	can't pretend reading perfectly parser tables...  Nonetheless, all
+	the other tests pass correctly, the table look OK, even though the
+	presence of `$axiom' is to be noted: AFAICS it is useless (but
+	harmless).
+
+2001-12-29  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (readgram): Don't add the rule 0 if there were no
+	rules read.  In other words, add it _after_ having performed
+	grammar sanity checks.
+	Fixes the `tests/regression.at (Invalid input: 1)' Failure.
+
+2001-12-29  Akim Demaille  <akim@epita.fr>
+
+	* tests/regression.at (Web2c Report): Catch up: the rule 0 is now
+	visible, and some states have now a different number.
+
+2001-12-29  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (readgram): Bind the initial rule's lineno to that
+	of the first rule.
+	* tests/regression.at (Rule Line Numbers, Unresolved SR Conflicts):
+	(Solved SR Conflicts): Adjust rule 0's line number.
+
+2001-12-29  Akim Demaille  <akim@epita.fr>
+
+	Fix the `GAWK Grammar' failure.
+
+	* src/LR0.c (final_state): Initialize to -1 so that we do compute
+	the reductions of the first state which was mistakenly confused
+	with the final state because precisely final_state was initialized
+	to 0.
+	* tests/sets.at (Nullable): Adjust: state 0 does have lookaheads,
+	now noticed by Bison.
+	* tests/regression.at (Rule Line Numbers): Adjust: state 0 does
+	have a reduction on $default.
+
+2001-12-29  Akim Demaille  <akim@epita.fr>
+
+	* src/gram.c (ritem_print): Be sure to subtract 1 when displaying
+	rule line numbers.
+	* src/closure.c (print_closure): Likewise.
+	* src/derives.c (print_derives): Likewise.
+	* tests/sets.at (Nullable): Adjust: the rule numbers are correct
+	now.
+
+2001-12-29  Akim Demaille  <akim@epita.fr>
+
+	* src/lalr.c (lookaheads_print): New.
+	(lalr): Call it when --trace-flag.
+	* tests/sets.at (Nullable): Adjust: when tracing, the lookaheads
+	are dumped.
+
+2001-12-29  Akim Demaille  <akim@epita.fr>
+
+	* src/derives.c (print_derives): Be sure to use `>= 0', not `> 0',
+	when walking through ritem, even via rule->rhs.
+	* src/reduce.c (dump_grammar, useful_production, reduce_output)
+	(useful_production, useless_nonterminals): Likewise.
+	(reduce_grammar_tables): Likewise, plus update nritems.
+	* src/nullable.c (set_nullable): Likewise.
+	* src/lalr.c (build_relations): Likewise.
+	* tests/sets.at (Nullable): Adjust.
+	Fortunately, now, the $axiom is no longer nullable.
+
+2001-12-29  Akim Demaille  <akim@epita.fr>
+
+	* src/LR0.c (generate_states): Use nritems, not nitems, nor using
+	the 0-sentinel.
+	* src/gram.c (ritem_longest_rhs): Likewise.
+	* src/reduce.c (nonterminals_reduce): Likewise.
+	* src/print_graph.c (print_graph): Likewise.
+	* src/output.c (output_rule_data): Likewise.
+	* src/nullable.c (set_nullable):  Likewise.
+
+2001-12-29  Akim Demaille  <akim@epita.fr>
+
+	* src/output.c: Comment changes.
+
+2001-12-27  Paul Eggert  <eggert@twinsun.com>
+
+	* src/bison.simple (YYSTACK_ALLOC, YYSIZE_T): Remove special
+	cases for non-GNU systems like AIX, HP-UX, SGI, Sun, and
+	Sparc, as they were causing more porting problems than the
+	(minor) performance improvement was worth.
+
+	Also, catch up with 1.31's YYSTD.
+
+2001-12-27  Akim Demaille  <akim@epita.fr>
+
+	* src/output.c (output_gram): Rely on nritems, not the
+	0-sentinel.  See below.
+	Use -1 as separator, not 0.
+	* src/bison.simple (yyparse): Subtract 1 to the rule numbers.
+	Rely on -1 as separator in yyrhs, instead of 0.
+	* tests/calc.at (AT_CHECK_CALC): Now, the parsers no longer issue
+	twice `Now at end of input', therefore there are two lines less to
+	expect.
+
+2001-12-27  Akim Demaille  <akim@epita.fr>
+
+	* tests/regression.at (Unresolved SR Conflicts):
+	(Solved SR Conflicts, Rule Line Numbers): Adjust to the changes
+	below.
+
+2001-12-27  Akim Demaille  <akim@epita.fr>
+
+	* src/LR0.c (new_state): Recognize the final state by the fact it
+	is reached by eoftoken.
+	(insert_start_shifting_state, insert_eof_shifting_state)
+	(insert_accepting_state, augment_automaton): Remove, since now
+	these states are automatically computed from the initial state.
+	(generate_states): Adjust.
+	* src/print.c: When reporting a rule number to the user, subtract
+	1, so that the axiom rule is rule 0, and the first user rule is 1.
+	* src/reduce.c: Likewise.
+	* src/print_graph.c (print_core): For the time being, just as for
+	the report, depend upon --trace-flags to dump the full set of
+	items.
+	* src/reader.c (readgram): Once the grammar read, insert the rule
+	0: `$axiom: START-SYMBOL $'.
+	* tests/set.at: Adjust: rule 0 is now displayed, and since the
+	number of the states has changed (the final state is no longer
+	necessarily the last), catch up.
+
+2001-12-27  Akim Demaille  <akim@epita.fr>
+
+	Try to make the use of the eoftoken valid.  Given that its value
+	is 0 which was also used as a sentinel in ritem, (i) make sure >= 0
+	is used instead of > 0 where appropriate, (ii), depend upon nritems
+	instead of the 0-sentinel.
+
+	* src/gram.h, src/gram.c (nritems): New.
+	Expected to be duplication of nitems, but for the time being...
+	* src/reader.c (packgram): Assert nritems and nitems are equal.
+	* src/LR0.c (allocate_itemsets, new_itemsets): Adjust.
+	* src/closure.c (print_closure, print_fderives): Likewise.
+	* src/gram.c (ritem_print): Likewise.
+	* src/print.c (print_core, print_grammar): Likewise.
+	* src/print_graph.c: Likewise.
+
+2001-12-27  Akim Demaille  <akim@epita.fr>
+
+	* src/main.c (main): If there are complains after grammar
+	reductions, then output the report anyway if requested, then die.
+	* src/symtab.c (bucket_new): Initialize `value' to -1, not 0.
+	* src/reader.c (eoftoken): New.
+	(parse_token_decl): If the token being defined has value `0', it
+	is the eoftoken.
+	(packsymbols): No longer hack `tags' to insert `$' by hand.
+	Be sure to preserve the value of the eoftoken.
+	(reader): Make sure eoftoken is defined.
+	Initialize nsyms to 0: now eoftoken is created just like the others.
+	* src/print.c (print_grammar): Don't special case the eof token.
+	* src/regression.at: Adjust: `$' has value 0, not -1, which was a
+	lie anyway, albeit pleasant.
+	* tests/calc.at: Exercise error messages with eoftoken.
+	Change the grammar so that empty input is invalid.
+	Adjust expectations.
+	When yyungeting, be sure to use a valid yylloc: use last_yylloc.
+
+2001-12-27  Akim Demaille  <akim@epita.fr>
+
+	* configure.in: Check the protos of strchr ans strspn.
+	Replace strchr if needed.
+	* src/system.h: Provide the protos of strchr, strspn and memchr if
+	missing.
+	* lib/strchr.c: New.
+	* src/reader.c (symbols_save): Use strchr.
+
+2001-12-27  Akim Demaille  <akim@epita.fr>
+
+	* src/print.c, src/print_graph.c (escape): New.
+	Use it to quote the TAGS outputs.
+	* src/print_graph.c (print_state): Now errors are in red, and
+	reductions in green.
+	Prefer high to wide: output the state number on a line of its own.
+
+2001-12-27  Akim Demaille  <akim@epita.fr>
+
+	* src/state.h, src/state.c (reductions_new): New.
+	* src/LR0.c (set_state_table): Let all the states have a
+	`reductions', even if reduced to 0.
+	(save_reductions): Adjust.
+	* src/lalr.c (initialize_LA, initialize_lookaheads): Adjust.
+	* src/print.c (print_reductions, print_actions): Adjust.
+	* src/output.c (action_row): Adjust.
+
+2001-12-27  Akim Demaille  <akim@epita.fr>
+
+	* src/state.h, src/state.c (errs_new, errs_dup): New.
+	* src/LR0.c (set_state_table): Let all the states have an errs,
+	even if reduced to 0.
+	* src/print.c (print_errs, print_reductions): Adjust.
+	* src/output.c (output_actions, action_row): Adjust.
+	* src/conflicts.c (resolve_sr_conflict): Adjust.
+
+2001-12-27  Akim Demaille  <akim@epita.fr>
+
+	* src/lalr.c (set_goto_map, initialize_F): Use SHIFT_SYMBOL.
+
+2001-12-27  Akim Demaille  <akim@epita.fr>
+
+	* src/conflicts.c, src/conflicts.h (print_reductions): Move to...
+	* src/print.c: here.
+	(lookaheadset, shiftset): New, used as additional storage by
+	print_reductions.
+	(print_results): Adjust.
+	(print_shifts, print_gotos, print_errs): New, extracted from...
+	(print_actions): here.
+	* src/print_graph.c (print_actions): Remove dead code.
+
+2001-12-27  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (copy_dollar, copy_at): Better checking of `n' in
+	`$n' and `@n'.
+
+2001-12-27  Akim Demaille  <akim@epita.fr>
+
+	* src/lalr.c (add_lookback_edge): Use state_t instead of ints.
+	(build_relations): Adjust.
+
+2001-12-27  Akim Demaille  <akim@epita.fr>
+
+	* src/lalr.c (set_goto_map): Remove a wrong but benign loop
+	duplication.
+
+2001-12-27  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (packgram): Catch nitems overflows.
+
+2001-12-27  Akim Demaille  <akim@epita.fr>
+
+	* src/files.c, src/files.h (guard_obstack): Remove.
+	* src/output.c (output): Adjust.
+	* src/reader.c (parse_braces): New, factoring...
+	(copy_action, copy_guard): these two which are renamed as...
+	(parse_action, parse_guard): these.
+	As a voluntary consequence, using braces around guards is now
+	mandatory.
+
+2001-12-27  Akim Demaille  <akim@epita.fr>
+
+	* src/gram.h (rule_t): `guard' and `guard_line' are new members.
+	* src/reader.c (symbol_list): `guard' and `guard_line' are new
+	members.
+	(symbol_list_new): Adjust.
+	(copy_action): action_line is the first line, not the last.
+	(copy_guard): Just as for actions, store the `action' only, not
+	the switch/case/break flesh.
+	Don't parse the user action that might follow the guard, let...
+	(readgram): do it, i.e., now, there can be an action after a
+	guard.
+	In other words the guard is just explicitly optional.
+	(packgram): Adjust.
+	* src/output.c (guards_output): New.
+	(output_parser): Call it when needed.
+	(output): Also free the guard and attrs obstacks.
+	* src/files.c, src/files.h (obstack_save): Remove.
+	(output_files): Remove.
+	As a result, if one needs the former `.act' file, using an
+	appropriate skeleton which requires actions and guards is now
+	required.
+	* src/main.c (main): Adjust.
+	* tests/semantic.at: New.
+	* tests/regression.at: Use `input.y' as input file name.
+	Avoid 8+3 problems by requiring input.c when the test needs the
+	parser.
+
+2001-12-27  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (symbol_list_new): Be sure to initialize all the
+	fields.
+
+2001-12-27  Akim Demaille  <akim@epita.fr>
+
+	All the hacks using a final pseudo state are now useless.
+
+	* src/LR0.c (set_state_table): state_table holds exactly nstates.
+	* src/lalr.c (nLA): New.
+	(initialize_LA, compute_lookaheads, initialize_lookaheads): Use it
+	instead of lookaheadsp from the pseudo state (nstate + 1).
+
+2001-12-27  Akim Demaille  <akim@epita.fr>
+
+	* src/output.c (action_row, token_actions): Use a state_t instead
+	of a integer, and nlookaheads instead of the following state's
+	lookaheadsp.
+
+2001-12-27  Akim Demaille  <akim@epita.fr>
+
+	* src/conflicts.c (log_resolution, flush_shift)
+	(resolve_sr_conflict, set_conflicts, solve_conflicts)
+	(count_sr_conflicts, count_rr_conflicts, conflicts_output)
+	(conflicts_print, print_reductions): Use a state_t instead of an
+	integer when referring to a state.
+	As much as possible, depend upon nlookaheads, instead of the
+	`lookaheadsp' member of the following state (since lookaheads of
+	successive states are successive, the difference between state n + 1
+	and n served as the number of lookaheads for state n).
+	* src/lalr.c (add_lookback_edge): Likewise.
+	* src/print.c (print_core, print_actions, print_state)
+	(print_results): Likewise.
+	* src/print_graph.c (print_core, print_actions, print_state)
+	(print_graph): Likewise.
+	* src/conflicts.h: Adjust.
+
+2001-12-27  Akim Demaille  <akim@epita.fr>
+
+	* src/bison.hairy: Formatting/comment changes.
+	ANSIfy.
+	Remove `register' indications.
+	Add plenty of `static'.
+
+2001-12-27  Akim Demaille  <akim@epita.fr>
+
+	* src/output.c (prepare): Drop the muscle `ntbase' which
+	duplicates ntokens.
+	* src/bison.simple: Formatting/comment changes.
+	Use YYNTOKENS only, which is documented, but not YYNTBASE, which
+	is an undocumented synonym.
+
+2001-12-22  Akim Demaille  <akim@epita.fr>
+
+	* src/output.c (output_table_data): Change the prototype to use
+	`int' for array ranges: some invocations do pass an int, not a
+	short.
+	Reported by Wayne Green.
+
+2001-12-22  Akim Demaille  <akim@epita.fr>
+
+	Some actions of web2c.y are improperly triggered.
+	Reported by Mike Castle.
+
+	* src/lalr.c (traverse): s/F (i)[k] = F (j)[k]/F (j)[k] = F (i)[k]/.
+	* tests/regression.at (Web2c): Rename as...
+	(Web2c Report): this.
+	(Web2c Actions): New.
+
+2001-12-22  Akim Demaille  <akim@epita.fr>
+
+	Reductions in web2c.y are improperly reported.
+	Reported by Mike Castle.
+
+	* src/conflicts.c (print_reductions): Fix.
+	* tests/regression.at (Web2c): New.
+
+2001-12-18  Akim Demaille  <akim@epita.fr>
+
+	Some host fail on `assert (!"foo")', which expands to
+	((!"foo") ? (void)0 : __assert("!"foo."", __FILE__, __LINE__))
+	Reported by Nelson Beebee.
+
+	* src/output.c, src/vcg.c: Replace `assert (!"it succeeded")' with
+	`#define it_succeeded 0' and `assert (it_succeeded)'.
+
+2001-12-17  Marc Autret  <autret_m@epita.fr>
+
+	* src/bison.simple: Don't hard code the skeleton line and filename.
+	* src/output.c (output_parser): Rename 'line' as 'output_line'.
+	New line counter 'skeleton_line' (skeleton-line muscle).
+
+2001-12-17  Paul Eggert  <eggert@twinsun.com>
+
+	* NEWS, doc/bison.texinfo, doc/bison.1, doc/bison.rnh: Document that
+	YYDEBUG must be defined to a nonzero value.
+
+	* src/bison.simple (yytname): Do not assume that the user defines
+	YYDEBUG to a properly parenthesized expression.
+
+2001-12-17  Akim Demaille  <akim@epita.fr>
+
+	* src/state.h (state_t): Rename lookaheads as lookaheadsp.
+	nlookaheads is a new member.
+	Adjust all users.
+	* src/lalr.h (nlookaheads): Remove this orphan declaration.
+	* src/lalr.c (initialize_lookaheads): Set nlookaheads for each
+	state.
+
+2001-12-17  Akim Demaille  <akim@epita.fr>
+
+	* src/files.h, src/files.c (open_files, close_files): Remove.
+	* src/main.c (main): Don't open/close files, nor invoke lex_free,
+	let...
+	* src/reader.c (reader): Do it.
+
+2001-12-17  Akim Demaille  <akim@epita.fr>
+
+	* src/conflicts.c (print_reductions): Formatting changes.
+
+2001-12-17  Akim Demaille  <akim@epita.fr>
+
+	* src/conflicts.c (flush_shift): Also adjust lookaheadset.
+	(flush_reduce): New.
+	(resolve_sr_conflict): Adjust.
+
+2001-12-17  Akim Demaille  <akim@epita.fr>
+
+	* src/output.c (output_obstack): Be static and rename as...
+	(format_obstack): this, to avoid any confusion with files.c's
+	output_obstack.
+	* src/reader.h (muscle_obstack): Move to...
+	* src/output.h: here, since it's defined in output.c.
+
+2001-12-17  Akim Demaille  <akim@epita.fr>
+
+	* src/output.c (action_row, save_column, default_goto)
+	(sort_actions, matching_state, pack_vector): Better variable
+	locality.
+
+2001-12-17  Akim Demaille  <akim@epita.fr>
+
+	* src/output.c: Various formatting changes.
+
+2001-12-17  Akim Demaille  <akim@epita.fr>
+
+	* src/files.c (output_files): Free the output_obstack.
+	* src/main.c (main): Call print and print_graph conditionally.
+	* src/print.c (print): Work unconditionally.
+	* src/print_graph.c (print_graph): Work unconditionally.
+	* src/conflicts.c (log_resolution): Output only if verbose_flag.
+
+2001-12-16  Marc Autret  <autret_m@epita.fr>
+
+	* src/output.c (actions_output): Fix. When we use %no-lines,
+	there is one less line per action.
+
+2001-12-16  Marc Autret  <autret_m@epita.fr>
+
+	* src/bison.simple: Remove a useless #line directive.
+	s/#line %%line %%skeleton/#line %%line "%%parser-file-name"/'.
+	* src/output.c (get_lines_number): New.
+	(output_parser): Adjust, now takes care about the lines of a
+	output muscles.
+	Fix line numbering.
+	(actions_output): Computes the number of lines taken by actions.
+	(output_master_parser): Insert new skeleton which is the name of
+	the output parser file name.
+
+2001-12-15  Marc Autret  <autret_m@epita.fr>
+
+	* src/bison.simple [YYERROR_VERBOSE]: Restore backward compatibility.
+
+2001-12-15  Marc Autret  <autret_m@epita.fr>
+
+	* src/output.c (output_gram): Keep track of the hairy one.
+
+2001-12-15  Akim Demaille  <akim@epita.fr>
+
+	Make `make distcheck' work.
+
+	* lib/Makefile.am (INCLUDES): Add top_srcdir/intl, since hash uses
+	system.h which uses libgettext.h.
+
+2001-12-15  Akim Demaille  <akim@epita.fr>
+
+	* src/nullable.c (set_nullable): Useless rules must be skipped,
+	otherwise, since we range over their symbols, we might look at a
+	nonterminal which no longer ``exists'', i.e., it is not counted in
+	`nvars', hence we overflow our arrays.
+
+2001-12-15  Akim Demaille  <akim@epita.fr>
+
+	The header can also be produced directly, without any obstack!
+	Yahoo!
+
+	* src/files.c, src/files.h (defines_obstack): Remove.
+	(compute_header_macro): Global.
+	(defines_obstack_save): Remove.
+	* src/reader.c (parse_union_decl): No longer output to
+	defines_obstack: its content can be found in the `stype' muscle
+	anyway.
+	(output_token_translations): Merge into...
+	(symbols_output): this.
+	Rename as...
+	(symbols_save): this.
+	(reader): Adjust.
+	* src/output.c (header_output): New.
+	(output): Call it.
+
+2001-12-15  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (parse_union_decl): Instead of handling two obstack
+	simultaneously, use one to define the `stype' muscle, and use the
+	value of the latter to fill defines_obstack.
+	(copy_comment): Remove.
+	(copy_comment2): Work for a single obstack.
+	Rename as...
+	(copy_comment): this.
+
+2001-12-15  Akim Demaille  <akim@epita.fr>
+
+	* src/lex.c, src/lex.h (xgetc): No longer static.
+	* src/reader.c (parse_union_decl): Revamp.
+
+2001-12-15  Akim Demaille  <akim@epita.fr>
+
+	Still making progress in separating Bison into (i) input, (ii)
+	process, (iii) output: now we can directly output the parser file
+	without using table_obstack at all.
+
+	* src/files.c, src/files.h (table_obstack): Bye bye.
+	(parser_file_name): New.
+	* src/files.c (compute_output_file_names): Compute it.
+	* src/output.c (actions_output, output_parser)
+	(output_master_parser): To a file instead of an obstack.
+
+2001-12-15  Akim Demaille  <akim@epita.fr>
+
+	Attach actions to rules, instead of pre-outputting them to
+	actions_obstack.
+
+	* src/gram.h (rule_t): action and action_line are new members.
+	* src/reader.c (symbol_list): Likewise.
+	(copy_action): Save the actions within the rule.
+	(packgram): Save them in rule_table.
+	* src/output.c (actions_output): New.
+	(output_parser): Use it on `%%actions'.
+	(output_rule_data): Don't free rule_table.
+	(output): Do it.
+	(prepare): Don't save the `action' muscle.
+	* src/bison.simple: s/%%action/%%actions/.
+
+2001-12-15  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (copy_action): When --yacc, don't append a `;'
+	to the user action: let it fail if lacking.
+	Suggested by Arnold Robbins and Tom Tromey.
+
+2001-12-14  Akim Demaille  <akim@epita.fr>
+
+	* src/lex.c (literalchar): Simply return the char you decoded, non
+	longer mess around with obstacks and int pointers.
+	Adjust all callers.
+
+2001-12-14  Akim Demaille  <akim@epita.fr>
+
+	* src/lex.c (literalchar): Don't escape the special characters,
+	just decode them, and keep them as char (before, eol was output as
+	the 2 char string `\n' etc.).
+	* src/output.c (output_rule_data): Use quotearg to output the
+	token strings.
+
+2001-12-13  Paul Eggert  <eggert@twinsun.com>
+
+	* src/bison.simple (YYSIZE_T, YYSTACK_ALLOC, YYSTACK_FREE):
+	Do not infringe on the global user namespace when using C++.
+	(YYFPRINTF, YYSTDERR): New macros, needed for the above.
+	All uses of `fprintf' and `stderr' changed.
+
+	* doc/bison.texinfo: Document YYFPRINTF, YYSTDERR.
+
+2001-12-13  Akim Demaille  <akim@epita.fr>
+
+	The computation of nullable is broken: it doesn't handle empty
+	RHS's properly.
+
+	* tests/torture.at (GNU AWK Grammar): New.
+	* tests/sets.at (Nullable): New.
+	* src/nullable.c (set_nullable): Instead of blindly looping over
+	`ritems', loop over the rules, and then over their rhs's.
+
+	Work around Autotest bugs.
+
+	* src/warshall.c (bitmatrix_print): Don't use `+--+' as table
+	frame, because Autotest understand lines starting with a `+' as
+	traces from the shell.  Then, they are not processed properly.
+	Admittedly an Autotest bug, but we don't have time to wait for
+	Autotest to catch up.
+	* tests/regression.at (Broken Closure): Adjust to the new table
+	frames.
+	Move to...
+	* tests/sets.at: here.
+
+2001-12-13  Akim Demaille  <akim@epita.fr>
+
+	* src/closure.c (closure): Use nrules instead of playing tricks
+	with BITS_PER_WORD.
+
+2001-12-13  Akim Demaille  <akim@epita.fr>
+
+	* src/print.c (print_actions): Output the handling of `$' as the
+	traces do: shifting the token EOF.  Before EOF was treated as a
+	nonterminal.
+	* tests/regression.at: Adjust some tests.
+	* src/print_graph.c (print_core): Complete the set of items via
+	closure.  The next-to-final and final states are still unsatisfying,
+	but that's to be addressed elsewhere.
+	No longer output the rule numbers, but do output the state number.
+	A single loop for the shifts + gotos is enough, but picked a
+	distinct color for each.
+	(print_graph): Initialize and finalize closure.
+
+2001-12-13  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (readgram): Remove dead code, an strip useless
+	braces.
+	(get_type): Remove, unused.
+
+2001-12-12  Akim Demaille  <akim@epita.fr>
+
+	* src/complain.h, src/complain.c: Remove error_one_per_line, rely
+	on that of lib/error.c.
+
+2001-12-12  Akim Demaille  <akim@epita.fr>
+
+	Some hosts don't like `/' in includes.
+
+	* src/system.h: Include libgettext.h without qualifying the path.
+	* src/Makefile.am (INCLUDES): Add $(top_srcdir)/intl, remove
+	$(top_srcdir).
+
+2001-12-11  Marc Autret  <autret_m@epita.fr>
+
+	* src/output.c (output_parser): Remove useless muscle.
+
+2001-12-11  Marc Autret  <autret_m@epita.fr>
+
+	* src/bison.simple: Remove #line just before %%epilogue. It
+	is now handled in ...
+	* src/reader.c (read_additionnal_code): Add the output of a
+	#line for the epilogue.
+
+2001-12-10  Marc Autret  <autret_m@epita.fr>
+
+	* src/reader.c (copy_definition): Re-use CPP-outed code which
+	replace precedent remove.
+	* src/bison.simple: Remove #line before %%prologue because
+	%%input-line is wrong at this time.
+
+2001-12-10  Marc Autret  <autret_m@epita.fr>
+
+	* src/reader.c (symbols_output): Clean up.
+	* src/output.c (output_gram, output): Clean up.
+
+2001-12-10  Akim Demaille  <akim@epita.fr>
+
+	* src/lalr.c (initialize_lookaheads): New.  Extracted from...
+	* src/LR0.c (set_state_table): here.
+	* src/lalr.c (lalr): Call it.
+
+2001-12-10  Akim Demaille  <akim@epita.fr>
+
+	* src/state.h (shifts): Remove the `number' member: shifts are
+	attached to state, hence no longer need to be labelled with a
+	state number.
+
+2001-12-10  Akim Demaille  <akim@epita.fr>
+
+	Now that states have a complete set of members, the linked list of
+	shifts is useless: just fill directly the state's shifts member.
+
+	* src/state.h (shifts): Remove the `next' member.
+	* src/LR0.c (first_state, last_state): Remove.
+	Adjust the callers.
+	(augment_automaton): Don't look for the shifts that must be added
+	a shift on EOF: it is those of the state we looked for!  But now,
+	since shifts are attached, it is no longer needed to looking
+	merely by its id: its number.
+
+2001-12-10  Akim Demaille  <akim@epita.fr>
+
+	* src/LR0.c (augment_automaton): Better variable locality.
+	Remove an impossible branch: if there is a state corresponding to
+	the start symbol being shifted, then there is shift for the start
+	symbol from the initial state.
+
+2001-12-10  Akim Demaille  <akim@epita.fr>
+
+	* src/LR0.c (augment_automaton): Call `insert_eof_shifting_state'
+	only when appropriate: when insert_start_shifting_state' is not
+	invoked.
+	* tests/regression.at (Rule Line Numbers): Adjust.
+
+2001-12-10  Akim Demaille  <akim@epita.fr>
+
+	* src/LR0.c (augment_automaton): Now that all states have shifts,
+	merge the two cases addition shifts to the initial state.
+
+2001-12-10  Akim Demaille  <akim@epita.fr>
+
+	* src/lalr.c (set_state_table): Move to...
+	* src/LR0.c: here.
+	* src/lalr.c (lalr): Don't call it...
+	* src/LR0.c (generate_states): do it.
+	* src/LR0.h (first_state): Remove, only the table is used.
+
+2001-12-10  Akim Demaille  <akim@epita.fr>
+
+	* src/LR0.h (first_shift, first_reduction): Remove.
+	* src/lalr.c: Don't use first_shift: find shifts through the
+	states.
+
+2001-12-10  Akim Demaille  <akim@epita.fr>
+
+	* src/LR0.c: Attach shifts to states as soon as they are
+	computed.
+	* src/lalr.c (set_state_table): Instead of assigning shifts to
+	state, just assert that the mapping was properly done.
+
+2001-12-10  Akim Demaille  <akim@epita.fr>
+
+	* src/LR0.c (insert_start_shift): Rename as...
+	(insert_start_shifting_state): this.
+	(insert_eof_shifting_state, insert_accepting_state): New.
+	(augment_automaton): Adjust.
+	Better locality of the variables.
+	When looking if the start_symbol is shifted from the initial
+	state, using `while (... symbol != start_symbol ...)' sounds
+	better than `while (... symbol < start_symbol ...)': If fail
+	to see how the order between symbols could be relevant!
+
+2001-12-10  Akim Demaille  <akim@epita.fr>
+
+	* src/getargs.h: Don't declare `spec_name_prefix' and
+	`spec_file_prefix', declared by src/files.h.
+	* src/files.c, src/files.h: Default for spec_name_prefix is "yy".
+	* src/muscle_tab.c (muscle_init): Default prefix to NULL.
+	* src/output.c (prepare): Adjust.
+	* src/reader.c (symbols_output): Likewise.
+	* src/vmsgetargs.c: Vaguely adjust, but who cares?
+
+2001-12-10  Akim Demaille  <akim@epita.fr>
+
+	* src/muscle_tab.c (muscle_init): NULL is a better default than
+	`"0"'.
+
+2001-12-10  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (reader): Calling symbols_output once is enough.
+
+2001-12-10  Akim Demaille  <akim@epita.fr>
+
+	Now that states have a complete set of members, the linked list of
+	reductions is useless: just fill directly the state's reductions
+	member.
+
+	* src/state.h (struct reductions): Remove member `number' and
+	`next'.
+	* src/LR0.c (first_reduction, last_reduction): Remove.
+	(save_reductions): Don't link the new reductions, store them in
+	this_state.
+	* src/lalr.c (set_state_table): No need to attach reductions to
+	states, it's already done.
+	* src/output.c (output_actions): No longer free the shifts, then
+	the reductions, then the states: free all the states and their
+	members.
+
+2001-12-10  Akim Demaille  <akim@epita.fr>
+
+	* src/options.c (OPTN, DRTV, BOTH): New.
+	(option_table): Use them.
+
+	* src/muscle_tab.c: Don't include xalloc.h and string.h: that's
+	the job of system.h.
+	* src/options.c: Don't include stdio.h and xalloc.h for the same
+	reasons.
+
+2001-12-10  Akim Demaille  <akim@epita.fr>
+
+	* src/output.c (output, prepare): Make sure the values of the
+	muscles `action' and `prologue' are 0-terminated.
+
+2001-12-10  Akim Demaille  <akim@epita.fr>
+
+	Clean up GCC warnings.
+
+	* src/reader.c (copy_action): `buf' is not used.
+	(parse_skel_decl): Be static.
+	* src/muscle_tab.c (mhash1, mhash2, muscle_insert): Preserve `const'.
+	* src/options.h (create_long_option_table): Have a real prototype.
+	* lib/hash.c, lib/hash.h (hash_insert, hash_insert_at, hash_delete)
+	(hash_delete_at): Return const void *.
+	Adjust casts to preserve the const.
+
+2001-12-10  Akim Demaille  <akim@epita.fr>
+
+	* configure.in: Require 2.52g.
+	M4 is not needed, but AUTOM4TE is.
+	* m4/m4.m4: Remove.
+	* tests/Makefile.am: Adjust.
+
+2001-12-10  Akim Demaille  <akim@epita.fr>
+
+	One structure for states is enough, even though theoretically
+	there are LR(0) states and LALR(1) states.
+
+	* src/lalr.h (state_t): Remove.
+	(state_table): Be state_t **, not state_t *.
+	* src/state.h (core, CORE_ALLOC): Rename as...
+	(state_t, STATE_ALLOC): this.
+	Add the LALR(1) members: shifts, reductions, errs.
+	* src/LR0.c (state_table): Rename as...
+	(state_hash): this, to avoid name clashes with the global
+	`state_table'.
+	* src/print_graph.c, src/LR0.c, src/LR0.h, src/conflicts.c
+	* src/lalr.c, src/lalr.h, src/output.c, src/print.c: Adjust.
+
+2001-12-10  Akim Demaille  <akim@epita.fr>
+
+	Bison dumps core on bash.y.
+	Reported by Pascal Bart.
+
+	* src/warshall.c (bitmatrix_print): New.
+	(TC): Use it.
+	When performing a transitive closure R(i, j) && R(j, k) => R(i, k),
+	j must be the outer loop.
+	* tests/regression.at (Broken Closure): New.
+
+2001-12-05  Akim Demaille  <akim@epita.fr>
+
+	* tests/atlocal.in (CPPFLAGS): Do not leave a space between -I and
+	its argument.
+	Reported by Peter Hamorsky.
+
+2001-12-05  Akim Demaille  <akim@epita.fr>
+
+	* src/conflicts.c (err_table): Remove.
+	(resolve_sr_conflict): Adjust.
+	* src/lalr.h (state_t.reduction_table, state_t.shift_table):
+	Rename as...
+	(state_t.reductions, state_t.shifts): this.
+
+2001-12-05  Akim Demaille  <akim@epita.fr>
+
+	* src/reduce.c (reduce_grammar_tables): No longer disable the
+	removal of useless rules via CPP but via `if (0)', so that the
+	compiler still check the code is valid.
+	For instance, it should have noticed `rline' no longer exists: use
+	the `line' member of rule_t.
+	* src/gram.c (dummy, rline): Remove, unused.
+
+2001-12-05  Akim Demaille  <akim@epita.fr>
+
+	* src/output.c (pack_vector): Use assert, not berror.
+	* src/main.c (berror): Remove, unused.
+
+2001-12-05  Akim Demaille  <akim@epita.fr>
+
+	New experimental feature: if --verbose --trace output all the
+	items of a state, not only its kernel.
+
+	* src/print.c (print_core): If `trace_flag', then invoke closure
+	before outputting the items of the state (print_core is no longer
+	a correct name them).
+	(print_results): Invoke new_closure/free_closure if needed.
+
+2001-12-05  Akim Demaille  <akim@epita.fr>
+
+	* src/LR0.c (new_itemsets): Use nshifts only, not shiftcount.
+	* src/closure.c, src/closure.h (itemsetsize): Rename as...
+	(nitemset): for consistency with the rest of the project.
+
+2001-12-05  Akim Demaille  <akim@epita.fr>
+
+	* src/closure.c (print_closure): Improve.
+	(closure): Use it for printing input and output.
+
+2001-12-05  Akim Demaille  <akim@epita.fr>
+
+	* src/closure.c (FIRSTS, FDERIVES): Adjust to reality: they are
+	indexed by nonterminals.
+
+2001-12-05  Akim Demaille  <akim@epita.fr>
+
+	* src/warshall.c (TC, RTC): De-obsfucate (source reduced to 22% of
+	what it was!).
+	* src/warshall.h: Remove accidental duplication of the content.
+
+2001-12-05  Akim Demaille  <akim@epita.fr>
+
+	* src/closure.c (set_fderives): De-obfuscate.
+
+2001-12-05  Akim Demaille  <akim@epita.fr>
+
+	* src/closure.c (print_firsts, print_fderives): De-obfuscate.
+
+2001-12-05  Akim Demaille  <akim@epita.fr>
+
+	* src/closure.c (set_firsts): De-obfuscate.
+
+2001-12-05  Akim Demaille  <akim@epita.fr>
+
+	* src/output.c (action_row): De-obfuscate
+	using the good o' techniques: arrays not pointers, variable
+	locality, BITISSET, RESETBIT etc.
+
+2001-12-05  Akim Demaille  <akim@epita.fr>
+
+	Pessimize the code to simplify it: from now on, all the states
+	have a valid SHIFTS, which NSHIFTS is possibly 0.
+
+	* src/LR0.c (shifts_new): Be global and move to..
+	* src/state.c, src/state.h: here.
+	* src/conflicts, src/lalr.c, src/output.c, src/print.c,
+	* src/print_graph: Adjust.
+
+2001-12-05  Akim Demaille  <akim@epita.fr>
+
+	* src/state.h (SHIFT_DISABLE, SHIFT_IS_DISABLED): New.
+	* src/conflicts.c: Use it.
+	Restore a few missing `if (!SHIFT_IS_DISABLED)' which were
+	incorrectly ``simplified''.
+
+2001-12-05  Akim Demaille  <akim@epita.fr>
+
+	* src/conflicts.c (flush_shift, resolve_sr_conflict): De-obfuscate
+	using the good o' techniques: arrays not pointers, variable
+	locality, BITISSET, RESETBIT etc.
+
+2001-12-05  Akim Demaille  <akim@epita.fr>
+
+	* src/state.h (SHIFT_SYMBOL): New.
+	* src/conflicts.c: Use it to deobfuscate.
+
+2001-12-05  Akim Demaille  <akim@epita.fr>
+
+	* src/conflicts.c (count_sr_conflicts, count_rr_conflicts)
+	(print_reductions): De-obfuscate using the good o' techniques:
+	arrays not pointers, variable locality, BITISSET.
+
+2001-12-05  Akim Demaille  <akim@epita.fr>
+
+	* src/conflicts.c (print_reductions): Arrays, not pointers.
+	Use BITISSET.
+
+2001-12-05  Akim Demaille  <akim@epita.fr>
+
+	* src/conflicts.c (print_reductions): Pessimize, but clarify.
+
+2001-12-05  Akim Demaille  <akim@epita.fr>
+
+	* src/conflicts.c (print_reductions): Improve variable locality.
+
+2001-12-05  Akim Demaille  <akim@epita.fr>
+
+	* src/conflicts.c (print_reductions): Pessimize, but clarify.
+
+2001-12-05  Akim Demaille  <akim@epita.fr>
+
+	* src/conflicts.c (print_reductions): Improve variable locality.
+
+2001-12-05  Akim Demaille  <akim@epita.fr>
+
+	* src/state.h (SHIFT_IS_ERROR, SHIFT_IS_GOTO, SHIFT_IS_SHIFT): New.
+	* src/lalr.c: Use them.
+
+2001-12-05  Akim Demaille  <akim@epita.fr>
+
+	* src/LR0.c (augment_automaton): Formatting changes.
+	Better variable locality.
+
+2001-12-05  Akim Demaille  <akim@epita.fr>
+
+	* src/lalr.c (matrix_print): New.
+	(transpose): Use it.
+	Use arrays instead of pointers.
+
+2001-12-05  Akim Demaille  <akim@epita.fr>
+
+	* src/lalr.c (maxrhs): Move to...
+	* src/gram.c, src/gram.h (ritem_longest_rhs): here.
+	* src/lalr.c (build_relations): Adjust.
+
+2001-12-05  Akim Demaille  <akim@epita.fr>
+
+	* src/lalr.c (transpose): Free the memory allocated to the
+	argument, as it is replaced by the results by the unique caller.
+	(build_relations): Merely invoke transpose: it handles the memory
+	deallocation.
+	Improve variable locality.
+	Avoid variables used as mere abbreviations.
+	(compute_lookaheads): Use arrays instead of pointers.
+
+2001-12-05  Akim Demaille  <akim@epita.fr>
+
+	* src/lalr.c (initialize_F): Improve variable locality.
+	Avoid variables used as mere abbreviations.
+
+2001-12-05  Akim Demaille  <akim@epita.fr>
+
+	* src/derives.c (print_derives): Display the ruleno.
+	* src/lalr.c (initialize_F, transpose): Better variable locality
+	to improve readability.
+	Avoid variables used as mere abbreviations.
+
+2001-12-05  Akim Demaille  <akim@epita.fr>
+
+	* src/lalr.c (traverse): Use arrays instead of pointers.
+
+2001-12-05  Akim Demaille  <akim@epita.fr>
+
+	* src/nullable.c (set_nullable): Use a for loop to de-obfuscate
+	the handling of squeue.
+	`symbol >= 0' is wrong now, use `rule_table[ruleno].useful'.
+
+2001-12-05  Akim Demaille  <akim@epita.fr>
+
+	Because useless nonterminals are now kept alive (instead of being
+	`destroyed'), we now sometimes examine them, and store information
+	related to them.  Hence we need to know their number, and adjust
+	memory allocations.
+
+	* src/reduce.c, src/reduce.h (nuseless_nonterminals): No longer
+	static.
+	* src/LR0.c (allocate_itemsets): The memory allocated to
+	`symbol_count' was used for two different purpose: once to count
+	the number of occurrences of each symbol, and later reassigned to
+	`shift_symbol', containing the symbol that can be shifted from a
+	given state.
+	Deobfuscate, i.e., allocate, use and free `symbol_count' here
+	only, and...
+	(new_itemsets): Allocate `shift_symbol' here.
+	(allocate_itemsets): symbol_count includes useless nonterminals.
+	Make room for them.
+	(free_storage): Use `free', not `XFREE', for pointers that cannot
+	be null.
+
+2001-12-05  Akim Demaille  <akim@epita.fr>
+
+	* src/nullable.c (set_nullable): Deobfuscate the handling of
+	ritem.
+	`symbol >= 0' is wrong now, use `rule_table[ruleno].useful'.
+
+2001-12-05  Akim Demaille  <akim@epita.fr>
+
+	* src/gram.c, src/gram.h (ritem_print): New.
+	* src/gram.c (dummy): Remove, now there is actual code in gram.c.
+	(This useless function was defined only to work around VMS linkers
+	that can't handle compilation units with variables only).
+	* src/reduce.c (dump_grammar): Use it to trace the construction of
+	ritem.
+
+2001-12-04  Paul Eggert  <eggert@twinsun.com>
+
+	* src/bison.simple (union yyalloc): Change member names
+	to be the same as the stack names.
+	(yyparse): yyptr is now union yyalloc *, not char *.
+	(YYSTACK_RELOCATE): Likewise.  This avoids a GCC warning,
+	and may generate better code on some machines.
+	(yystpcpy): Use prototype if __STDC__ is defined, not just
+	if __cplusplus is defined.
+
+2001-11-30  Akim Demaille  <akim@epita.fr>
+
+	* configure.in (WARNING_CFLAGS): Add -Werror when possible.
+	(CFLAGS): Do not include the WARNING_CFLAGS here, since GNU
+	Gettext doesn't compile cleanly, and dies with -Werror.
+	* src/Makefile.am, lib/Makefile.am, tests/atlocal.in (CFLAGS):
+	Include WARNING_CFLAGS here.
+	* lib/xstrdup.c: Include xalloc.h, so that xstrdup be declared
+	before being defined.
+
+2001-11-27  Paul Eggert  <eggert@twinsun.com>
+
+	* lib/quotearg.h (quotearg_n, quotearg_n_style):
+	First arg is int, not unsigned.
+	* lib/quotearg.c (quotearg_n, quotearg_n_style): Likewise.
+	(SIZE_MAX, UINT_MAX): New macros.
+	(quotearg_n_options): Abort if N is negative.
+	Avoid overflow check on hosts where size_t is 64 bits and int
+	is 32 bits, as overflow is impossible there.
+	Fix off-by-one typo that caused unnecessary reallocation.
+
+2001-11-29  Paul Eggert  <eggert@twinsun.com>
+
+	Name space cleanup in generated parser.
+
+	* doc/bison.texinfo (Bison Parser): Discuss system headers
+	and their effect on the user name space.
+
+	* src/bison.simple:
+	(YYSTACK_ALLOC, YYSTACK_FREE, union yyalloc, YYSTACK_GAP_MAX,
+	YYSTACK_BYTES, YYSTACK_RELOCATE): Do not define unless necessary,
+	i.e. unless ! defined (yyoverflow) || defined (YYERROR_VERBOSE).
+
+	(YYSIZE_T): New macro.  Use it instead of size_t, to avoid infringing
+	on user names when possible.
+
+	(YYSTACK_USE_ALLOCA): Do not define; just use any existing defn.
+	Simplify test for whather <alloca.h> exists.
+
+	(<stdlib.h>): Include if we will use malloc, and if standard C or C++.
+
+	(<stdio.h>): Include if YYDEBUG.
+
+	(yymemcpy): Renamed from __yy_memcpy.  Do not define unless
+	! defined (yyoverflow) && ! defined (yymemcpy).
+
+	(yymemcpy, yyparse): Rename local variables as needed so that
+	they all begin with 'yy'.
+
+	(yystrlen, yystpcpy): New functions.
+
+	(YY_DECL_NON_LSP_VARIABLES): Renamed from _YY_DECL_VARIABLES.
+	All uses changed.
+
+	(yyparse): size_t -> YYSIZE_T.  Use yystrlen and yystpcpy
+	instead of relying on string.h functions.  Use YYSTACK_ALLOC
+	and YYSTACK_FREE instead of malloc and free.
+
+2001-11-30  Akim Demaille  <akim@epita.fr>
+
+	* src/bison.simple (YYSTYPE, YYLTYPE): Move their definitions
+	before their first uses.
+	(YYBISON, YYPURE): Move to the top of the output.
+
+2001-11-30  Akim Demaille  <akim@epita.fr>
+
+	* tests/reduce.at (Useless Nonterminals): Fix.
+
+2001-11-30  Akim Demaille  <akim@epita.fr>
+
+	* src/bison.simple (YYSTACK_FREE): Use `do {;} while (0)' as empty
+	if body instead of `;' to pacify GCC's warnings.
+
+2001-11-30  Akim Demaille  <akim@epita.fr>
+
+	Instead of mapping the LHS of unused rules to -1, keep the LHS
+	valid, but flag the rules as invalid.
+
+	* src/gram.h (rule_t): `useful' is a new member.
+	* src/print.c (print_grammar): Adjust.
+	* src/derives.c (set_derives): Likewise.
+	* src/reader.c (packgram, reduce_output): Likewise.
+	* src/reduce.c (reduce_grammar_tables): Likewise.
+	* tests/reduce.at (Underivable Rules, Useless Rules): New.
+
+2001-11-30  Akim Demaille  <akim@epita.fr>
+
+	* src/reduce.c (reduce_output): Formatting changes.
+	* src/print.c (print_results, print_grammar): Likewise.
+	* tests/regression.at (Rule Line Numbers)
+	(Solved SR Conflicts, Unresolved SR Conflicts): Adjust.
+
+2001-11-30  Akim Demaille  <akim@epita.fr>
+
+	* src/reduce.c (nonterminals_reduce): Instead of throwing away
+	useless nonterminals, move them at the end of the symbol arrays.
+	(reduce_output): Adjust.
+	* tests/reduce.at (Useless Nonterminals): Adjust.
+
+2001-11-30  Akim Demaille  <akim@epita.fr>
+
+	* src/reduce.c: Various comment/formatting changes.
+	(nonterminals_reduce): New, extracted from...
+	(reduce_grammar_tables): here.
+	(reduce_grammar): Call nonterminals_reduce.
+
+2001-11-29  Paul Eggert  <eggert@twinsun.com>
+
+	* src/bison.simple (YYSTACK_REALLOC): Remove.
+	(YYSTACK_ALLOC): Resurrect this macro, with its old meaning.
+	(YYSTACK_FREE, YYSTACK_GAP_MAX, YYSTACK_BYTES, YYSTACK_RELOCATE):
+	New macros.
+	(union yyalloc): New type.
+	(__yy_memcpy): Last arg is size_t, not unsigned int, to remove
+	an arbitrary restriction on hosts where size_t is wider than int.
+
+	(yyparse): Don't dump core if alloca or malloc fails; instead, report
+	a parser stack overflow.  Allocate just one block of memory for all
+	three stacks, instead of allocating three blocks; this typically is
+	faster and reduces fragmentation.
+
+	Do not limit the number of items in the stack to a value that fits
+	in 'int', as this is an arbitrary limit on hosts with 64-bit
+	size_t and 32-bit int.
+
+2001-11-29  Marc Autret  <autret_m@epita.fr>
+
+	* tests/calc.at [AT_DATA_CALC_Y]: Use %error-verbose instead
+	of defining YYERROR_VERBOSE.
+	[AT_DATA]: $4 is now out of C declarations in the prologue.
+
+2001-11-28  Marc Autret  <autret_m@epita.fr>
+
+	* src/reader.c (parse_dquoted_param): New.
+	(parse_skel_decl): Use it.
+	* src/lex.h: Add its prototype.
+	* src/lex.c (literalchar): Become not static.
+
+2001-11-28  Marc Autret  <autret_m@epita.fr>
+
+	* src/output.h: And put its extern declaration here.
+	* src/output.c (error_verbose): Define here.
+	(prepare): Echo name modification.
+	* src/getargs.h: Clean its extern declaration.
+	* src/getargs.c (error_verbose_flag): Remove.
+	(getargs): Remove case 'e'.
+	* src/options.c (option_table): 'error-verbose' is now seen as simple
+	percent option.
+	Include output.h.
+
+	* src/reader.c (read_declarations): Remove case tok_include.
+	(parse_include_decl): Remove.
+	* src/lex.h (token_t): Remove tok_include.
+	* src/options.c (option_table): 'include' is now a simple command line
+	option.
+
+2001-11-28  Marc Autret  <autret_m@epita.fr>
+
+	* src/bison.simple: Adjust muscle names.
+	* src/muscle_tab.c (muscle_init): Also rename the muscles.
+	* src/output.c (prepare): s/_/-/ for the muscles names.
+	(output_parser): When scanning for a muscle, allow '-' instead of '_'.
+
+2001-11-28  Marc Autret  <autret_m@epita.fr>
+
+	* src/bison.simple: Fix debug.
+	[YYERROR_VERBOSE]: Re-integrate as an internal macro.
+
+2001-11-28  Akim Demaille  <akim@epita.fr>
+
+	* src/LR0.c (shifts_new): New.
+	(save_shifts, insert_start_shift, augment_automaton): Use it.
+
+2001-11-28  Akim Demaille  <akim@epita.fr>
+
+	* src/closure.c (closure): `b' and `ruleno' denote the same value:
+	keep ruleno only.
+
+2001-11-28  Akim Demaille  <akim@epita.fr>
+
+	* src/closure.c (closure): Instead of looping over word in array
+	then bits in words, loop over bits in array.
+
+2001-11-28  Akim Demaille  <akim@epita.fr>
+
+	* src/closure.c (closure): No longer optimize the special case
+	where all the bits of `ruleset[r]' are set to 0, to make the code
+	clearer.
+
+2001-11-28  Akim Demaille  <akim@epita.fr>
+
+	* src/closure.c (closure): `r' and `c' are new variables, used to
+	de-obfuscate accesses to RULESET and CORE.
+
+2001-11-28  Akim Demaille  <akim@epita.fr>
+
+	* src/reduce.c (reduce_print): Use ngettext.
+	(dump_grammar): Improve the trace accuracy.
+
+2001-11-28  Akim Demaille  <akim@epita.fr>
+
+	* src/reduce.c (dump_grammar): Don't translate trace messages.
+
+2001-11-28  Akim Demaille  <akim@epita.fr>
+
+	* tests/reduce.at (Useless Terminals, Useless Nonterminals): New.
+	* src/reduce.c (reduce_grammar_tables): Do not free useless tags,
+	as all tags are free'ed afterwards.
+	From Enrico Scholz.
+
+2001-11-27  Paul Eggert  <eggert@twinsun.com>
+
+	* src/bison.simple (YYSTACK_REALLOC): Fix typo that caused us to
+	use alloca when we didn't want to, and vice versa.
+
+2001-11-27  Marc Autret  <autret_m@epita.fr>
+
+	* src/muscle_tab.c (muscle_init): Remove 'verbose' muscle
+	initialization.
+	* src/output.c (prepare): Remove its update.
+
+2001-11-27  Marc Autret  <autret_m@epita.fr>
+
+	* tests/torture.at [AT_DATA]: Remove YYERROR_VERBOSE definition.
+	Use %error-verbose.
+
+2001-11-27  Marc Autret  <autret_m@epita.fr>
+
+	* src/bison.simple: Remove YYERROR_VERBOSE using.
+	Use %%error_verbose.
+	(yyparse): Likewise.
+	* src/output.c (prepare): Give its final value.
+	* src/muscle_tab.c (muscle_init): Init new muscle 'error_verbose'.
+	* src/getargs.h: Add its extern declaration.
+	* src/getargs.c (error_verbose_flag): New int.
+	(getargs): Update to catch new case.
+	* src/options.c (option_table): 'error-verbose' is a new option.
+	(shortopts): Update.
+
+2001-11-27  Akim Demaille  <akim@epita.fr>
+
+	* src/system.h: Use intl/libgettext.h.
+	* src/Makefile.am (INCLUDES): Add -I $(top_srcdir).
+
+2001-11-27  Akim Demaille  <akim@epita.fr>
+
+	* tests/torture.at (Exploding the Stack Size with Malloc):
+	s/YYSTACK_USE_ALLOCA_ALLOCA/YYSTACK_USE_ALLOCA/.
+
+2001-11-27  Akim Demaille  <akim@epita.fr>
+
+	* src/files.c: Include error.h.
+	Reported by Hans Aberg.
+
+2001-11-26  Marc Autret  <autret_m@epita.fr>
+
+	* src/reader.c (parse_include_decl): New, not yet implemented.
+	(read_declarations): Add case tok_include.
+	* src/getargs.h (include): Add its extern definition.
+	* src/getargs.c (include): New const char *.
+	(getargs): Add case '-I'.
+	* src/options.c (option_table): Add include as command line and
+	percent option.
+	* src/lex.h (token_t): Add tok_include.
+
+2001-11-26  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (readgram): Make sure rules for mid-rule actions
+	have a lineno equal to that of their host rule.
+	Reported by Hans Aberg.
+	* tests/regression.at (Rule Line Numbers): New.
+
+2001-11-26  Akim Demaille  <akim@epita.fr>
+
+	* src/LR0.c (allocate_itemsets): kernel_size contains ints, not
+	size_ts.
+
+2001-11-26  Akim Demaille  <akim@epita.fr>
+
+	* src/complain.c, src/complain.h (error): Remove, provided by
+	lib/error.[ch].
+
+2001-11-26  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (read_declarations): Don't abort on tok_illegal,
+	issue an error message.
+	* tests/regression.at (Invalid %directive): New.
+	Reported by Hans Aberg.
+
+2001-11-26  Akim Demaille  <akim@epita.fr>
+
+	* configure.in: Invoke AC_FUNC_OBSTACK and AC_FUNC_ERROR_AT_LINE.
+	* lib/Makefile.am (libbison_a_SOURCES): Adjust.
+
+2001-11-26  Akim Demaille  <akim@epita.fr>
+
+	* src/conflicts.c (conflicts_print): Don't complain at all when
+	there are no reduce/reduce conflicts, and as many shift/reduce
+	conflicts as expected.
+	* tests/regression.at (%expect right): Adjust.
+
+2001-11-23  Akim Demaille  <akim@epita.fr>
+
+	* lib/alloca.c: Update, from fileutils.
+
+2001-11-23  Akim Demaille  <akim@epita.fr>
+
+	* lib/Makefile.am (libbison_a_LIBADD): Add @ALLOCA@.
+
+2001-11-23  Akim Demaille  <akim@epita.fr>
+
+	* src/system.h: Include alloca.h.
+	* src/main.c (main) [C_ALLOCA]: Call alloca (0).
+
+2001-11-23  Akim Demaille  <akim@epita.fr>
+
+	* src/print_graph.c (print_actions): Remove `rule', unused.
+	* src/LR0.c (kernel_size): Contain `int' instead of `size_t' to
+	pacify GCC's signed < unsigned warnings.
+	* src/closure.c (itemsetsize): Likewise.
+	* src/reader.c (symbol_list_new): Static.
+
+2001-11-23  Akim Demaille  <akim@epita.fr>
+
+	Attaching lineno to buckets is stupid, since only one copy of each
+	symbol is kept, only the line of the first occurrence is kept too.
+
+	* src/symtab.h, src/symtab.c (bucket): Remove the line member.
+	* src/reader.c (rline_allocated): Remove, unused.
+	(symbol_list): Have a `line' member.
+	(symbol_list_new): New.
+	(readgram): Use it.
+	* src/print.c (print_grammar): Output the rule line numbers.
+	* tests/regression.at (Solved SR Conflicts)
+	(Unresolved SR Conflicts): Adjust.
+	Reported by Hans Aberg.
+
+2001-11-22  Marc Autret  <autret_m@epita.fr>
+
+	* src/bison.simple [YYERROR_VERBOSE]: Force its value to be 1 or 0.
+
+2001-11-22  Marc Autret  <autret_m@epita.fr>
+
+	* src/muscle_tab.c (muscle_init): Remove initialization of
+	skeleton muscle.
+	* src/output.c (output_master_parser): Do it here.
+
+2001-11-20  Akim Demaille  <akim@epita.fr>
+
+	* po/sv.po: New.
+	* configure.in (ALL_LINGUAS): Adjust.
+	* po/POTFILE.in: Remove `nullable.c' and `derives.c' which no
+	longer contains strings to translate.
+
+2001-11-19  Akim Demaille  <akim@epita.fr>
+
+	* src/conflicts.c (conflicts_print): Add a missing \n.
+
+2001-11-19  Akim Demaille  <akim@epita.fr>
+
+	* src/nullable.c (nullable_print): New.
+	(set_nullable): Call it when tracing.
+	Better locality of variables.
+
+2001-11-19  Akim Demaille  <akim@epita.fr>
+
+	* src/print.c (print_actions): Better locality of variables.
+
+2001-11-19  Akim Demaille  <akim@epita.fr>
+
+	* src/derives.c (print_derives): Fix and enrich.
+	* src/closure.c (print_fderives): Likewise.
+
+2001-11-19  Akim Demaille  <akim@epita.fr>
+
+	* src/closure.c (itemsetend): Remove, replaced with...
+	(itemsetsize): new.
+
+2001-11-19  Akim Demaille  <akim@epita.fr>
+
+	* src/LR0.c (kernel_end): Remove, replaced with...
+	(kernel_size): new.
+
+2001-11-19  Akim Demaille  <akim@epita.fr>
+
+	* src/conflicts.c (set_conflicts): Use arrays instead of pointers
+	to clarify.
+
+2001-11-19  Akim Demaille  <akim@epita.fr>
+
+	* src/closure.c (closure): Use arrays instead of pointers to clarify.
+
+2001-11-19  Akim Demaille  <akim@epita.fr>
+
+	* src/closure.c, src/derives.c, src/nullable.c: Adjust various
+	trace messages.
+	* src/LR0.c: Likewise.
+	(allocate_itemsets): Use arrays instead of pointers to clarify.
+
+2001-11-19  Akim Demaille  <akim@epita.fr>
+
+	* src/getargs.c (statistics_flag): Replace with...
+	(trace_flag): New.
+	(longopts): Accept --trace instead of --statistics.
+	* src/getargs.h, src/options.c: Adjust.
+	* src/LR0.c, src/closure.c, src/derives.c, src/nullable.c,
+	* src/reduce.c: Use trace_flags instead of the CPP conditional TRACE.
+
+2001-11-19  Akim Demaille  <akim@epita.fr>
+
+	* src/LR0.c (new_itemsets, get_state): Use more arrays and fewer
+	pointers to clarify the code.
+	(save_reductions, save_shifts): Factor common parts of alternatives.
+
+2001-11-19  Akim Demaille  <akim@epita.fr>
+
+	* src/LR0.c (new_state, get_state): Complete TRACE code.
+	* src/closure.c: Include `reader.h' to get `tags', needed by the
+	trace code.
+	Rename the conditional DEBUG as TRACE.
+	Output consistently TRACEs to stderr, not stdout.
+	* src/derives.c: Likewise.
+	* src/reduce.c: (inaccessable_symbols): Using if is better style
+	than goto.
+	Use `#if TRACE' instead of `#if 0' for tracing code.
+
+2001-11-19  Akim Demaille  <akim@epita.fr>
+
+	* src/system.h (LIST_FREE, shortcpy): New.
+	* src/LR0.c: Use them.
+	* src/output.c (free_itemsets, free_reductions, free_shifts):
+	Remove, replaced by LIST_FREE.
+
+2001-11-19  Akim Demaille  <akim@epita.fr>
+
+	* src/state.h (CORE_ALLOC, SHIFTS_ALLOC, ERRS_ALLOC)
+	(REDUCTIONS_ALLOC):  New.
+	* src/LR0.c, src/conflicts.c: Use them to de-obfuscate memory
+	allocation.
+
+2001-11-19  Akim Demaille  <akim@epita.fr>
+
+	* src/LR0.c (new_state): Complete trace code.
+	* src/nullable.c (set_nullable): Don't translate traces.
+
+2001-11-19  Akim Demaille  <akim@epita.fr>
+
+	* src/print_graph.c (print_core): Better locality of variables.
+	* src/print.c (print_core): Likewise.
+
+2001-11-19  Akim Demaille  <akim@epita.fr>
+
+	* src/vcg.c: You do the output, so you are responsible of the
+	handling of VCG syntax, in particular: use quotearg.
+	* src/print_graph.c: Don't.
+	(print_actions): Don't output the actions as part of the nodes,
+	since that's the job of the edges.
+	(print_state): Don't output by hand: fill the node description,
+	and ask for its output.
+
+2001-11-19  Akim Demaille  <akim@epita.fr>
+
+	* src/bison.simple (yyparse): When verbosely reporting an error,
+	no longer put additional quotes around token names.
+	* tests/calc.at: Adjust.
+
+2001-11-19  Akim Demaille  <akim@epita.fr>
+
+	* src/symtab.h, src/symtab.c: `line' is a new member of `bucket'.
+	* src/reader.c (record_rule_lines, rline, rline_allocated): Remove.
+	* src/output.c: Adjust.
+
+2001-11-19  Akim Demaille  <akim@epita.fr>
+
+	* src/gram.h (rprec, rprecsym, rassoc): Remove, now part of...
+	(rule_t): this.
+	* src/conflicts.c, src/reader.c, src/reduce.c: Adjust.
+
+2001-11-19  Akim Demaille  <akim@epita.fr>
+
+	* src/gram.h (rule_t): New.
+	(rule_table): New.
+	(rrhs, rlhs): Remove, part of state_t.
+	* src/print_graph.c, src/closure.c, src/conflicts.c, src/derives.c,
+	* src/lalr.c, src/nullable.c, src/output.c, src/print.c,
+	* src/reader.c, src/reduce.c: Adjust.
+
+2001-11-19  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (symbols_output): New, extracted from...
+	(packsymbols): Here.
+	(reader): Call it.
+
+2001-11-19  Akim Demaille  <akim@epita.fr>
+
+	* src/lalr.c (set_maxrhs, maxrhs): Remove, replaced with...
+	(maxrhs): this new function.
+
+2001-11-19  Akim Demaille  <akim@epita.fr>
+
+	* src/lalr.c (F): New macro to access the variable F.
+	Adjust.
+
+2001-11-19  Akim Demaille  <akim@epita.fr>
+
+	* src/lalr.h (LA): New macro to access the variable LA.
+	* src/output.c, src/lalr.c, src/print_graph.c, src/conflicts.c:
+	* src/lalr.c: Adjust.
+
+2001-11-19  Akim Demaille  <akim@epita.fr>
+
+	* src/lalr.c (initialize_LA): Only initialize LA.  Let...
+	(set_state_table): handle the `lookaheads' members.
+
+2001-11-19  Akim Demaille  <akim@epita.fr>
+
+	* src/lalr.h (lookaheads): Removed array, whose contents is now
+	a member of...
+	(state_t): this structure.
+	* src/output.c, src/lalr.c, src/print_graph.c, src/conflicts.c:
+	Adjust.
+
+2001-11-19  Akim Demaille  <akim@epita.fr>
+
+	* src/lalr.h (consistent): Removed array, whose contents is now
+	a member of...
+	(state_t): this structure.
+	* src/output.c, src/lalr.c, src/print_graph.c, src/conflicts.c:
+	Adjust.
+
+2001-11-19  Akim Demaille  <akim@epita.fr>
+
+	* src/lalr.h (reduction_table, shift_table): Removed arrays, whose
+	contents are now members of...
+	(state_t): this structure.
+	* src/output.c, src/lalr.c, src/print_graph.c, src/conflicts.c:
+	Adjust.
+
+2001-11-19  Akim Demaille  <akim@epita.fr>
+
+	* src/lalr.h (state_t): New.
+	(state_table): Be a state_t * instead of a core **.
+	(accessing_symbol): Remove, part of state_t.
+	* src/lalr.c: Adjust.
+	(set_accessing_symbol): Merge into...
+	(set_state_table): this.
+	* src/print_graph.c, src/conflicts.c: Adjust.
+
+2001-11-14  Akim Demaille  <akim@epita.fr>
+
+	* tests/calc.at, tests/output.at, tests/regression.at,
+	* tests/testsuite.at, tests/torture.at: Rely on Autotest 2.52g:
+	now the tests are run in private dirs, therefore AC_CLEANUP and
+	family can be simplified to 0-ary.
+	* tests/atlocal.in: Now that we run `elsewhere' than in tests/,
+	use abs. path to find config.h.
+	* tests/calc.at (AT_CHECK_CALC): Don't try to check the compiler's
+	stderr, there can be way too much random noise.
+	Instead pass -Werror to GCC and rely on the exit status.
+	Reported by Wolfram Wagner.
+
+2001-11-14  Akim Demaille  <akim@epita.fr>
+
+	* src/bison.simple (yyparse): Let yyls1, yyss1 and yyvs1 be
+	defined only if yyoverflow is defined, to avoid `warning: unused
+	variable `yyvs1''.
+	Reported by The Test Suite.
+
+2001-11-14  Akim Demaille  <akim@epita.fr>
+
+	* src/print.c: Include reduce.h.
+	Reported by Hans Aberg.
+
+2001-11-14  Akim Demaille  <akim@epita.fr>
+
+	* src/lex.c, src/lex.h (token_buffer, unlexed_token_buffer):
+	Revert a previous patch:  these are really const.
+	* src/conflicts.c (conflict_report): Additional useless pair of
+	braces to pacify GCC's warnings for `if () if () {} else {}'.
+	* src/lex.c (parse_percent_token): Replace equal_offset with
+	arg_offset.
+	arg is const.
+	Be sure to strdup `arg' when used, since there is no reason for
+	token_buffer not to change.
+
+2001-11-14  Akim Demaille  <akim@epita.fr>
+
+	* src/system.h (EXIT_SUCCESS, EXIT_FAILURE): Ensure a proper
+	definition.
+	* src/main.c (main): Use them.
+	Suggested by Hans Aberg.
+
+2001-11-12  Akim Demaille  <akim@epita.fr>
+
+	* src/system.h (ngettext): Now that we use ngettext, be sure to
+	provide a default definition when NLS are not used.
+
+2001-11-12  Akim Demaille  <akim@epita.fr>
+
+	* doc/bison.texinfo: Use `$' as shell prompt, not `%'.
+	Use @kbd to denote user input.
+	(Language and Grammar): ANSIfy the example.
+	Adjust its layout for info/notinfo.
+	(Location Tracking Calc): Output error messages to stderr.
+	Output locations in a more GNUtically correct way.
+	Fix a couple of Englishos.
+	Adjust @group/@end group pairs.
+
+2001-11-12  Akim Demaille  <akim@epita.fr>
+
+	%expect was not functioning at all.
+
+	* src/conflicts.c (expected_conflicts): Set to -1.
+	(conflict_report): Use ngettext.
+	(conflicts_print): Check %expect and make its violation an error.
+	* doc/bison.texinfo (Expect Decl): Adjust.
+	* configure.in (AM_GNU_GETTEXT): Ask for ngettext.
+	* tests/regression.at (%expect not enough, %expect right)
+	(%expect too much): New.
+
+2001-11-12  Akim Demaille  <akim@epita.fr>
+
+	* tests/regression.at (Conflicts): Rename as...
+	(Unresolved SR Conflicts): this.
+	(Solved SR Conflicts): New.
+
+2001-11-12  Akim Demaille  <akim@epita.fr>
+
+	* src/reduce.c (print_results): Rename as...
+	(reduce_output): This.
+	Output to OUT, passed as argument, instead of output_obstack.
+	(dump_grammar): Likewise.
+	(reduce_free): New.
+	Also free V1.
+	(reduce_grammar): No longer call reduce_output, since...
+	* src/print.c (print_results): do it.
+	* src/main.c (main): Call reduce_free;
+
+2001-11-12  Akim Demaille  <akim@epita.fr>
+
+	* src/conflicts.c (print_reductions): Accept OUT as argument.
+	Output to it, not to output_obstack.
+	* src/print.c (print_actions): Adjust.
+
+2001-11-12  Akim Demaille  <akim@epita.fr>
+
+	* src/conflicts.c (count_sr_conflicts, count_rr_conflicts): Return
+	the result instead of using...
+	(src_total, rrc_total, src_count, rrc_count): Remove.
+	(any_conflicts): Remove.
+	(print_conflicts): Split into...
+	(conflicts_print, conflicts_output): New.
+	* src/conflicts.h: Adjust.
+	* src/main.c (main): Invoke both conflicts_output and conflicts_print.
+	* src/print.c (print_grammar): Issue `\n' between two rules.
+	* tests/regression.at (Conflicts): New.
+	Reported by Tom Lane.
+
+2001-11-12  Akim Demaille  <akim@epita.fr>
+
+	* tests/regression.at (Invalid input): Remove, duplicate with
+	``Invalid input: 1''.
+
+2001-11-12  Akim Demaille  <akim@epita.fr>
+
+	* tests/torture.at (AT_DATA_STACK_TORTURE)
+	(Exploding the Stack Size with Alloca)
+	(Exploding the Stack Size with Malloc): New.
+
+2001-11-12  Akim Demaille  <akim@epita.fr>
+
+	* src/bison.simple (YYSTACK_REALLOC): New.
+	(yyparse) [!yyoverflow]: Use it and free the old stack.
+	Reported by Per Allansson.
+
+2001-11-12  Pascal Bart  <pascal.bart@epita.fr>
+
+	* src/bison.simple: Define type yystype instead of YYSTYPE, and
+	define CPP macro, which substitute YYSTYPE by yystype.
+	* src/reader.c (parse_union_decl): Output yystype/YYSTYPE as we do
+	with yyltype/YYLTYPE.  This allows inclusion of the generated
+	header within the parser if the compiler, such as GGC, accepts
+	multiple equivalent #defines.
+	From Akim.
+
+2001-11-05  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (symbols_output): New, extracted from...
+	(packsymbols): here.
+	(reader): Adjust.
+
+2001-11-05  Akim Demaille  <akim@epita.fr>
+
+	* src/lex.c (parse_percent_token): s/quotearg/quote/.
+
+2001-11-05  Akim Demaille  <akim@epita.fr>
+
+	* tests/regression.at (AT_TEST_CPP_GUARD_H): Adjust the clean up
+	pattern.
+
+2001-11-05  Akim Demaille  <akim@epita.fr>
+
+	* src/options.h (struct option_table_struct): set_flags is void*.
+	* src/options.c (longopts): Support `--output' and `%output'.
+	(usage): Adjust.
+	* src/lex.h (tok_setopt): Remove, replaced with...
+	(tok_intopt, tok_stropt): these new guys.
+	* src/lex.c (getopt.h): Not needed.
+	(token_buffer, unlexed_token_buffer): Not const.
+	(percent_table): Promote `-' over `_' in directive names.
+	Active `%name-prefix', `file-prefix', and `output'.
+	(parse_percent_token): Accept possible arguments to directives.
+	Promote `-' over `_' in directive names.
+
+2001-11-04  Akim Demaille  <akim@epita.fr>
+
+	* doc/bison.texinfo (Decl Summary): Split the list into
+	`directives for grammars' and `directives for bison'.
+	Sort'em.
+	Add description of `%name-prefix', `file-prefix', and `output'.
+	Promote `-' over `_' in directive names.
+	(Bison Options): s/%locactions/%locations/.  Nice Freudian slip.
+	Simplify the description of `--name-prefix'.
+	Promote `-' over `_' in directive names.
+	Promote `--output' over `--output-file'.
+	Fix the description of `--defines'.
+	* tests/output.at: Exercise %file-prefix and %output.
+
+2001-11-02  Akim Demaille  <akim@epita.fr>
+
+	* doc/refcard.tex: Update.
+
+2001-11-02  Akim Demaille  <akim@epita.fr>
+
+	* src/symtab.h (SUNDEF): New.
+	* src/symtab.c (bucket_new): Init user_token_number to SUNDEF to
+	stand for `uninitialized', instead of 0.
+	* src/reader.c (packsymbols, parse_thong_decl): Adjust.
+	* src/lex.c (lex): Adjust.
+
+	* tests/calc.at (_AT_DATA_CALC_Y): Declare a token for EOF.
+	Number it 0.
+	Let yylex return it instead of a plain 0.
+	Reported by Dick Streefland.
+
+2001-11-02  Akim Demaille  <akim@epita.fr>
+
+	* tests/regression.at (Mixing %token styles): New test.
+
+2001-11-02  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (parse_thong_decl): Formatting changes.
+	(token_translations_init): New, extracted from...
+	(packsymbols): Here.
+	Adjust.
+
+2001-11-01  Akim Demaille  <akim@epita.fr>
+
+	* tests/regression.at (AT_TEST_CPP_GUARD_H): New.
+	Check that `9foo.y' produces correct cpp guards.
+	* src/files.c (compute_header_macro): Prepend `BISON_' to CPP
+	guards.
+	Reported by Wwp.
+
+2001-11-01  Akim Demaille  <akim@epita.fr>
+
+	* tests/regression.at (Invalid input: 2): New.
+	* src/lex.c (unlexed_token_buffer): New.
+	(lex, unlex): Adjust: when unlexing, be sure to save token_buffer
+	too.
+	Reported by Wwp.
+
+2001-11-01  Akim Demaille  <akim@epita.fr>
+
+	* tests/calc.at: Catch up with 1.30.
+	* configure.in: Bump to 1.49a.
+	Adjust to newer Autotest.
+
+2001-10-19  Pascal Bart  <pascal.bart@epita.fr>
+
+	* src/conflicts.c: Move global variables rrc_total and src_total ...
+	(print_conflicts): here.
+	* src/output.c (output): Free global variable user_toknums.
+	* src/lex.c (token_obstack): Become static.
+
+2001-10-18  Akim Demaille  <akim@epita.fr>
+
+	* tests/atlocal.in (GCC): Add.
+	* tests/calc.at: s/m4_match/m4_bmatch/.
+	s/m4_patsubst/m4_bpatsubst/.
+	(AT_CHECK_CALC): Check the compiler's stderr only if it's GCC.
+	* configure.in: AC_SUBST(GCC).
+
+2001-10-14  Marc Autret  <autret_m@epita.fr>
+
+	* src/options.c (create_long_option_table): Fix.
+
+2001-10-10  Akim Demaille  <akim@epita.fr>
+
+	* src/bison.simple: Be sure to set YYSTACK_USE_ALLOCA.
+
+2001-10-04  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (parse_union_decl): Push the caracters in
+	union_obstack, not attrs_obstack.
+
+2001-10-04  Akim Demaille  <akim@epita.fr>
+
+	Merge in the branch 1.29.
+
+	* src/reader.c (packsymbols): Use a temporary obstack for
+	`%%tokendef', since output_stack is already used elsewhere.
+
+	2001-10-02  Akim Demaille  <akim@epita.fr>
+
+	Bump 1.29d.
+
+	2001-10-02  Akim Demaille  <akim@epita.fr>
+
+	Version 1.29c.
+
+	2001-10-02  Akim Demaille  <akim@epita.fr>
+
+	* tests/regression.at (Invalid CPP headers): New.
+	From Alexander Belopolsky.
+	* src/files.c (compute_header_macro): Map non alnum chars to `_'.
+
+	2001-10-02  Akim Demaille  <akim@epita.fr>
+
+	* tests/regression.at (Invalid input): New.
+	* src/lex.c (lex): Be sure to set `token_buffer' in any case.
+	Reported by Shura.
+
+	2001-10-02  Akim Demaille  <akim@epita.fr>
+
+	* tests/calc.at: Now that --debug works, the tests must be adjusted.
+
+	2001-10-02  Akim Demaille  <akim@epita.fr>
+
+	* src/output.c (output_parser): Assert `skeleton'.
+	* src/files.c (skeleton_find): Look harder for skeletons on DOSish
+	systems.
+	From Shura.
+
+	2001-10-01  Marc Autret  <autret_m@epita.fr>
+
+	* src/lex.h: Echo modifications.
+	* src/lex.c (unlex): Parameter is now token_t.
+	From Hans Aberg.
+
+	2001-10-01  Marc Autret  <autret_m@epita.fr>
+
+	* src/main.c: Include lex.h.
+	From Hans Aberg.
+
+	2001-09-29  Akim Demaille  <akim@epita.fr>
+
+	* src/getargs.c (longopts): `--debug' is `-t', not `-d'.
+
+	2001-09-28  Akim Demaille  <akim@epita.fr>
+
+	* tests/testsuite.at: Update to newer Autotest.
+	* tests/Makefile.am (EXTRA_DIST): bison is not to be shipped.
+
+	2001-09-27  Akim Demaille  <akim@epita.fr>
+
+	Position independent wrapper.
+
+	* tests/bison: Remove.
+	* tests/bison.in: New.
+	* configure.in: Adjust.
+
+	2001-09-27  Paul Eggert  <eggert@twinsun.com>
+
+	Port quotearg fixes from tar 1.13.24.
+
+	* lib/quotearg.c: BSD/OS 4.1 wchar.h requires FILE and struct
+	tm to be declared.
+	(HAVE_MBSINIT): Undef if !HAVE_MBRTOWC.
+	(mbsinit): Define to 1 if !defined mbsinit && !HAVE_MBSINIT.
+
+	* m4/Makefile.am (EXTRA_DIST): Add mbrtowc.m4.
+	* m4/mbrtowc.m4: New file.
+	* m4/prereq.m4 (jm_PREREQ_QUOTEARG): Check for mbsinit and stddef.h.
+	Use jm_FUNC_MBRTOWC instead of AC_CHECK_FUNCS(mbrtowc).
+
+	2001-09-27  Akim Demaille  <akim@epita.fr>
+
+	Bump to 1.29c.
+
+	2001-09-27  Akim Demaille  <akim@epita.fr>
+
+	Version 1.29b.
+
+	2001-09-25  Akim Demaille  <akim@epita.fr>
+
+	* src/system.h: Include `xalloc.h'.
+	Remove it from the C files.
+	* src/files.c (output_files): Free the obstacks.
+	* src/lex.c (init_lex): Rename as...
+	(lex_init): this.
+	(lex_free): New.
+	* src/main.c (main): Use it.
+
+	2001-09-24  Marc Autret  <autret_m@epita.fr>
+
+	* src/vcg.c (open_edge, close_edge, open_node, close_node): Change
+	to output informations in fout (FILE*).
+	(open_graph, close_graph): Likewise.
+	(output_graph, output_edge, output_node): Likewise.
+	* src/vcg.h: Update function prototypes.
+	* src/print_graph.c (print_graph): Open output graph file.
+	(print_actions): Adjust.
+	* src/files.h: Remove extern declaration.
+	* src/files.c: Remove graph_obstack declaration.
+	(open_files): Remove graph_obstack initialization.
+	(output_files): Remove graph_obstack saving.
+
+	2001-09-24  Marc Autret  <autret_m@epita.fr>
+
+	* src/files.c (compute_output_file_names): Fix.
+
+	2001-09-24  Marc Autret  <autret_m@epita.fr>,
+		    Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (reader): Remove call to free_symtab ().
+	* src/main.c (main): Call it here.
+	Include symtab.h.
+	* src/conflicts.c (initialize_conflicts): Rename as...
+	(solve_conflicts): this.
+	* src/print.c (print_core, print_actions, print_state)
+	(print_grammar): Dump to a file instead a `output_obstack'.
+	(print_results): Dump `output_obstack', and then proceed with the
+	FILE *.
+	* src/files.c (compute_output_file_names, close_files): New.
+	(output_files): Adjust.
+	* src/main.c (main): Adjust.
+
+	2001-09-23  Marc Autret  <autret_m@epita.fr>
+
+	* src/files.c (compute_header_macro): Computes header macro name
+	from spec_defines_file when given.
+
+	2001-09-23  Marc Autret  <autret_m@epita.fr>
+
+	* src/files.c (output_files): Add default extensions.
+
+	2001-09-22  Akim Demaille  <akim@epita.fr>
+
+	* src/conflicts.c (finalize_conflicts): Rename as...
+	(free_conflicts): this.
+
+	2001-09-22  Akim Demaille  <akim@epita.fr>
+
+	* src/gram.c (gram_free): Rename back as...
+	(dummy): this.
+	(output_token_translations): Free `token_translations'.
+	* src/symtab.c (free_symtab): Free the tag field.
+
+	2001-09-22  Akim Demaille  <akim@epita.fr>
+
+	Remove `translations' as it is always set to true.
+
+	* src/gram.h: Adjust.
+	* src/reader.c (packsymbols, parse_token_decl): Adjust
+	* src/print.c (print_grammar): Adjust.
+	* src/output.c (output_token_translations): Adjust.
+	* src/lex.c (lex): Adjust.
+	* src/gram.c: Be sure the set pointers to NULL.
+	(dummy): Rename as...
+	(gram_free): this.
+
+	2001-09-22  Akim Demaille  <akim@epita.fr>
+
+	* configure.in: Invoke AM_LIB_DMALLOC.
+	* src/system.h: Use dmalloc.
+	* src/LR0.c: Be sure to have pointers initialized to NULL.
+	(allocate_itemsets): Allocate kernel_items only if needed.
+
+	2001-09-22  Akim Demaille  <akim@epita.fr>
+
+	* configure.in: Bump to 1.29b.
+	* tests/Makefile.am (DISTCLEANFILES): Add package.m4.
+	* tests/calc.at (_AT_DATA_CALC_Y): #undef malloc so that we don't
+	need xmalloc.c in calc.y.
+	From Pascal Bart.
+
+	2001-09-21  Akim Demaille  <akim@epita.fr>
+
+	Version 1.29a.
+	* Makefile.maint, config/config.guess, config/config.sub,
+	* config/missing: Update from masters.
+	* tests/Makefile.am ($(srcdir)/$(TESTSUITE)): No longer depend
+	upon package.m4.
+	* configure.in (ALL_LINGUAS): Add `tr'.
+
+	2001-09-21  Akim Demaille  <akim@epita.fr>
+
+	* tests/Makefile.am (package.m4): Move to...
+	($(srcdir)/$(TESTSUITE)): here.
+
+	2001-09-20  Akim Demaille  <akim@epita.fr>
+
+	* src/complain.c: No longer try to be standalone: use system.h.
+	Don't assume __STDC__ is defined to 1. Just test if it is defined.
+	* src/complain.h: Likewise.
+	* src/reduce.c (useless_nonterminals, inaccessable_symbols):
+	Remove the unused variable `n'.
+	From Albert Chin-A-Young.
+
+	2001-09-18  Marc Autret  <autret_m@epita.fr>
+
+	* doc/bison.1: Update.
+	* doc/bison.texinfo (Bison Options): Update --defines and --graph
+	descriptions.
+	(Option Cross Key): Update.
+	Add --graph.
+
+	2001-09-18  Marc Autret  <autret_m@epita.fr>
+
+	* tests/regression.at: New test (comment in %union).
+
+	2001-09-18  Marc Autret  <autret_m@epita.fr>
+
+	* src/reader.c (parse_union_decl): Do not output '/'. Let copy_comment
+	do that.
+	Reported by Keith Browne.
+
+	2001-09-18  Marc Autret  <autret_m@epita.fr>
+
+	* tests/output.at: Add tests for --defines and --graph.
+
+	2001-09-18  Marc Autret  <autret_m@epita.fr>
+
+	* tests/output.at: Removes tests of %{header,src}_extension features.
+
+	2001-09-18  Akim Demaille  <akim@epita.fr>
+
+	* tests/Makefile.am (package.m4): New.
+	* tests/calc.at (_AT_CHECK_CALC): Just run `calc input'.
+	(_AT_CHECK_CALC_ERROR): Likewise.
+	Factor the `, ' part of verbose error messages.
+
+	2001-09-18  Marc Autret  <autret_m@epita.fr>
+
+	* src/getargs.c (longopts): Declare --defines and --graph as options
+	with optional arguments.
+	* src/files.h: Add extern declarations.
+	* src/files.c (spec_graph_file, spec_defines_file): New.
+	(output_files): Update.
+	Remove CPP-outed code.
+
+	2001-09-18  Marc Autret  <autret_m@epita.fr>
+
+	Turn off %{source,header}_extension feature.
+
+	* src/files.c (compute_exts_from_gf): Update.
+	(compute_exts_from_src): Update.
+	(output_files): CPP-out useless code.
+	* src/files.h: Remove {header,source}_extension extern declarations.
+	* src/reader.c (parse_dquoted_param): CPP-out.
+	(parse_header_extension_decl): Remove.
+	(parse_source_extension_decl): Remove.
+	(read_declarations): Remove cases tok_{hdrext,srcext}.
+	* src/lex.c (percent_table): Remove {header,source}_extension entries.
+	* src/lex.h (token_t): Remove tok_hdrext and tok_srcext.
+
+	2001-09-10  Akim Demaille  <akim@epita.fr>
+
+	* tests/output.at (AT_CHECK_BISON_FLAGS, AT_CHECK_BISON_PERCENT):
+	(AT_CHECK_BISON_PERCENT_FLAGS): Merge into...
+	(AT_CHECK_OUTPUT): this.
+	Merely check ls' exit status, its output is useless.
+
+	2001-09-10  Akim Demaille  <akim@epita.fr>
+
+	* tests/calc.at: Use m4_match.
+	(_AT_DATA_CALC_Y): Check `yyin != NULL', not `stdin != NULL'.
+
+	2001-09-10  Marc Autret  <autret_m@epita.fr>,
+		    Akim Demaille  <akim@epita.fr>
+
+	* src/vcg.h (graph_s): color, textcolor, bordercolor are now
+	enum color_e.
+	* src/print_graph.c (print_graph): Initalize graph.layoutalgorithm
+	to `normal'.
+	* src/reader.c (parse_token_decl): Initialize token with tok_eof.
+	* src/lex.h: Adjust prototype.
+	(token_t): Add `tok_undef'.
+	* src/lex.c (struct percent_table_struct): Retval is now a token_t.
+	(parse_percent_token): Now returns token_t.
+	Add default statement in switch.
+	(lex): Separate `c' as an input variable, from the token_t result
+	part.
+	(unlexed): Is a token_t.
+
+	2001-09-10  Akim Demaille  <akim@epita.fr>
+
+	* configure.in: Bump to 1.29a.
+
+	2001-09-07  Akim Demaille  <akim@epita.fr>
+
+	Version 1.29.
+
+	2001-08-30  Akim Demaille  <akim@epita.fr>
+
+	* tests/atgeneral.m4, tests/atconfig.in, tests/suite.at: Remove.
+	* m4/atconfig.m4: Remove.
+	* tests/testsuite.at, tests/atlocal.in, tests/output.at,
+	* tests/bison: New.
+	* tests/regression.at, tests/calc.at: Use m4_define, AT_BANNER,
+	m4_if, m4_patsubst, and m4_regexp.
+	* tests/calc.at (_AT_CHECK_CALC, _AT_CHECK_CALC_ERROR): Use an
+	`input' file instead of echo.
+
+	2001-08-29  Akim Demaille  <akim@epita.fr>
+
+	Bump to 1.28e.
+
+	2001-08-29  Akim Demaille  <akim@epita.fr>
+
+	Version 1.28d.
+
+	2001-08-29  Paul Eggert  <eggert@twinsun.com>
+
+	* src/bison.simple (yyparse): Don't take the address of an
+	item before the start of an array, as that doesn't conform to
+	the C Standard.
+
+	2001-08-29  Robert Anisko  <anisko_r@epita.fr>
+
+	* doc/bison.texinfo (Location Tracking Calc): New node.
+
+	2001-08-29  Paul Eggert  <eggert@twinsun.com>
+
+	* src/output.c (output): Do not define const, as this now
+	causes more problems than it cures.
+
+	2001-08-29  Akim Demaille  <akim@epita.fr>
+
+	* doc/bison.texinfo: Modernize `@node' and `@top' use: just name
+	the nodes.
+	Be sure to tag the `detailmenu'.
+
+	2001-08-29  Akim Demaille  <akim@epita.fr>
+
+	* Makefile.maint (do-po-update): Wget refuses to overwrite files:
+	download in a tmp dir.
+
+	2001-08-28  Marc Autret  <autret_m@epita.fr>
+
+	* config/depcomp: New file.
+
+	2001-08-28  Marc Autret  <autret_m@epita.fr>
+
+	* doc/bison.1 (mandoc): Adjust.
+	From Juan Manuel Guerrero.
+
+	2001-08-28  Marc Autret  <autret_m@epita.fr>
+
+	* src/print_graph.c (print_state): Fix.
+
+	2001-08-27  Marc Autret  <autret_m@epita.fr>
+
+	* src/vcg.h (classname_s, infoname_s, node_s): Constify the
+	char * members.
+	Echo modifications to the functions prototypes.
+	* src/vcg.c (add_classname, add_infoname): Adjust arguments.
+
+	2001-08-27  Marc Autret  <autret_m@epita.fr>
+
+	* src/vcg.c: Include `xalloc.h'.
+	(add_colorentry): New.
+	(add_classname): New.
+	(add_infoname): New.
+	* src/vcg.h: Add new prototypes.
+
+	2001-08-27  Akim Demaille  <akim@epita.fr>
+
+	* Makefile.maint: Sync. again with CVS Autoconf.
+
+	2001-08-27  Akim Demaille  <akim@epita.fr>
+
+	* Makefile.maint: Formatting changes.
+	(po-update, cvs-update, update): New targets.
+	(AMTAR): Remove.
+
+	2001-08-27  Akim Demaille  <akim@epita.fr>
+
+	* Makefile.am (AUTOMAKE_OPTIONS): 1.5.
+	* Makefile.maint: Sync. with CVS Autoconf.
+
+	2001-08-27  Marc Autret  <autret_m@epita.fr>
+
+	* src/vcg.h (struct infoname_s): New.
+	(struct colorentry_s): New.
+	(graph_s): New fields {vertical,horizontal}_order in structure.
+	Add `infoname' field.
+	Add `colorentry' field;
+	* src/vcg_defaults.h (G_VERTICAL_ORDER): New.
+	(G_HORIZONTAL_ORDER): New.
+	(G_INFONAME): New.
+	(G_COLORENTRY): New.
+	* src/vcg.c (output_graph): Add output of {vertical,horizontal}_order.
+	Add output of `infoname'.
+	Add output of `colorentry'.
+
+	2001-08-27  Marc Autret  <autret_m@epita.fr>
+
+	* src/reader.c (parse_dquoted_param): Rename variable `index' to `i'.
+	This one shadowed a global parameter.
+
+	2001-08-24  Marc Autret  <autret_m@epita.fr>
+
+	* src/print_graph.c (node_output_size): Declared POSIX `size_t' type,
+	instead of `unsigned'.
+	(print_state): Do not call obstack_object_size () in obstack_grow ()
+	to avoid macro variables shadowing.
+
+	2001-08-23  Marc Autret  <autret_m@epita.fr>
+
+	* src/lex.c (percent_table): Typo: s/naem/name/.
+	Add graph option.
+	Normalize new options declarations.
+
+	2001-08-20  Pascal Bart  <pascal.bart@epita.fr>
+
+	* tests/suite.at: Exercise %header_extension and %source_extension.
+
+	2001-08-16  Marc Autret  <autret_m@epita.fr>
+
+	* src/reader.c (parse_dquoted_param): New.
+	(parse_header_extension_decl): Use it.
+	(parse_source_extension_decl): Likewise.
+
+	2001-08-16  Marc Autret  <autret_m@epita.fr>
+
+	* src/vcg.c: Remove includes of `complain.h' and `xalloc.h'.
+	(get_xxxx_str): Use assert () instead of complain ().
+	Remove return invokations in default cases.
+	(get_decision_str): Modify default behaviour. Remove second argument.
+	Echo modifications on calls.
+	(output_graph): Fix.
+
+	2001-08-16  Marc Autret  <autret_m@epita.fr>
+
+	* src/getargs.c (usage): Update with ``-g, --graph''.
+
+	2001-08-16  Marc Autret  <autret_m@epita.fr>
+
+	* doc/bison.texinfo (Bison Options): Add items `-g', `--graph'.
+	(Option Cross Key): Likewise.
+	* doc/bison.1: Update.
+
+2001-09-25  Pascal Bart  <pascal.bart@epita.fr>
+
+	* src/output.c (output_master_parser): Don't finish action_obstack.
+	(output_parser): Don't care about the muscle action, here.
+	(prepare): Copy the action_obstack in the action muscle.
+	(output): Free action_obstack.
+
+2001-09-23  Pascal Bart  <pascal.bart@epita.fr>
+
+	* src/reader.c (parse_union_decl): Add new obstack union_obstack.  Which
+	will contain `%union' declaration.
+	(parse_union_decl): Delete #line directive output.
+	(parse_union_decl): Substitute /attrs_obstack/union_obstack for all
+	informations about %union.
+	(parse_union_decl): Copy the union_obstack in the muscle stype.
+	* src/bison.simple: Add new #line directive.
+	Add typdef %%stype YYSTYPE.
+
+2001-09-23  Pascal Bart  <pascal.bart@epita.fr>
+
+	* src/bison.simple: Add new `#line' directive.
+
+2001-09-22  Pascal Bart  <pascal.bart@epita.fr>
+
+	* src/bison.simple: New `#line' directive.
+	* src/output.c (output_parser): Support new dynamic muscle input_line.
+
+2001-09-22  Marc Autret  <autret_m@epita.fr>
+
+	* src/output.c (output_master_parser): New.
+	(output_parser): Be more re-entrant.
+
+2001-09-21  Marc Autret  <autret_m@epita.fr>
+
+	* src/reader.c (copy_definition, parse_union_decl): Update and use
+	`linef' muscle.
+	(copy_action): Likewise.
+	Use obstack_1grow ().
+	* src/muscle_tab.c (muscle_init): Add muscle `linef'.
+
+2001-09-21  Marc Autret  <autret_m@epita.fr>
+
+	* src/options.c (option_table): Adjust.
+	* src/lex.c (parse_percent_token): Fix.
+
+2001-09-20  Pascal Bart  <pascal.bart@epita.fr>
+
+	* src/options.c (symtab.h): Include it, need by lex.h.
+
+2001-09-20  Pascal Bart  <pascal.bart@epita.fr>
+
+	* src/lex.c (parse_percent_token): Change type of variable `tx', which
+	is now an option_table_struct*.
+	(option_strcmp): New function option_strcmp.
+	(parse_percent_token): Call option_strcmp.
+	* src/getargs.c (xalloc.h, options.h): Include it.
+	(getargs): Call create_long_option_table.
+	(getargs): Free longopts at the end of the function.
+	(shortopts): Move in options.c.
+	* src/options.c (create_long_option_table): New function.  Convert
+	information from option_table to option structure.
+	* src/reader.c (options.h): Include it.
+
+	* src/Makefile.am: Adjust.
+	* src/options.c (option_table): Create from longopts and percent_table.
+	* src/getargs.c (longopts): Delete.
+	* src/lex.c (struct percent_table_struct): Delete.
+	(percent_table): Delete.
+	(options.h): Include it.
+	* src/options.c: Create.
+	* src/options.h: Create.
+	Declare enum opt_access_e.
+	Define struct option_table_struct.
+
+2001-09-20  Marc Autret  <autret_m@epita.fr>
+
+	* doc/bison.texinfo: Adjust terminologies about prologue and epilogue
+	sections of Bison.
+
+2001-09-19  Pascal Bart  <pascal.bart@epita.fr>
+
+	* src/bison.simple: s/%%filename/%%skeleton.
+	* src/muscle_tab.c (getargs.h): Include it.
+	(muscle_init): Insert new muscle skeleton.
+
+2001-09-18  Pascal Bart  <pascal.bart@epita.fr>
+
+	* src/output.c (output_parser): Delete unused variable actions_dumped.
+
+2001-09-07  Pascal Bart  <pascal.bart@epita.fr>
+
+	* src/output.c (output): Delete call to reader_output_yylsp.
+	* src/reader.c (reader): Likewise.
+	* src/reader.h: Delete declaration of reader_output_yylsp.
+
+2001-09-02  Marc Autret  <autret_m@epita.fr>
+
+	* src/reader.c: Include muscle_tab.h.
+	(parse_union_decl): Update.
+	(parse_macro_decl): Rename parse_muscle_decl.
+	Update to use renamed functions and variable.
+	(read_declarations, copy_action, read_additionnal_code, : Updated
+	with correct variables and functions names.
+	(packsymbols, reader): Likewise.
+
+	* src/reader.h (muscle_obstack): Extern declaration update.
+
+	* src/output.c: Include muscle_tab.h
+	In all functions using macro_insert, change by using muscle_insert ().
+	(macro_obstack): Rename muscle_obstack.
+	Echo modifications in the whole file.
+	(MACRO_INSERT_INT): Rename MUSCLE_INSERT_INT.
+	(MACRO_INSERT_STRING): Rename MUSCLE_INSERT_STRING.
+	(MACRO_INSERT_PREFIX): Rename MUSCLE_INSERT_PREFIX.
+
+	* src/muscle_tab.h: Update double inclusion macros.
+	(macro_entry_s): Rename muscle_entry_s.
+	Update prototypes.
+
+	* src/muscle_tab.c: Include muscle_tab.h.
+	Rename macro_tabble to muscle_table.
+	(mhash1, mhash2, mcmp): Use muscle_entry.
+	(macro_init): Rename muscle_init. Update.
+	(macro_insert): Rename muscle_insert. Update.
+	(macro_find): Rename muscle_find. Update.
+
+	* src/main.c: Include muscle_tab.h.
+	(main): Call muscle_init ().
+	* src/Makefile.am (bison_SOURCES): Echo modifications.
+
+2001-09-02  Marc Autret  <autret_m@epita.fr>
+
+	Now the files macro_tab.[ch] are named muscle_tab.[ch].
+
+	* src/muscle_tab.c, src/muscle_tab.h: Add files.
+
+2001-09-02  Marc Autret  <autret_m@epita.fr>
+
+	* src/macrotab.c, src/macrotab.h: Remove.
+
+2001-09-01  Pascal Bart  <pascal.bart@epita.fr>
+
+	* src/reader.c (copy_guard): Use muscle to specify the `#line'
+	filename.
+
+2001-09-01  Marc Autret  <autret_m@epita.fr>
+
+	* tests/calc.at (exp): Now, YYERROR_VERBOSE need to be set
+	to an explicit value to activate the feature. We do it here.
+
+2001-08-31  Pascal Bart  <pascal.bart@epita.fr>
+
+	* src/output.c (prepare): Delete the `filename' muscule insertion.
+	* src/reader.c (copy_action): Use `filename' muscule with `#line'.
+	(parse_union_decl): Likewise.
+	* src/macrotab.c (macro_init): Initialize filename by infile.
+
+2001-08-31  Marc Autret  <autret_m@epita.fr>
+
+	* src/bison.simple (YYLSP_NEEDED): New definition.
+	* src/output.c (prepare): Add macro insertion of `locations_flag'
+
+2001-08-31  Pascal Bart  <pascal.bart@epita.fr>
+
+	* src/output.c (prepare): Delete insertion of previous muscles,
+	and insert the `prefix' muscles.
+	* src/macrotab.c (macro_init): Likewise.
+	(macro_init): Initialization prefix directive by `yy'.
+	* src/bison.simple: Substitute all %%yylex, %%yychar, %%yylval,
+	%%yydebug, %%yyerror, %%yynerrs and %%yyparse by yylex, yychar,
+	yylval, yydebug, yyerror, yynerrs and yyparse.
+	New directive `#define' to substitute yydebug, ... with option
+	name_prefix.
+
+2001-08-31  Pascal Bart  <pascal.bart@epita.fr>
+
+	* src/main.c (main): Standardize.
+	* src/output.c (output_table_data, output_parser): Likewise.
+	* src/macrotab.h, src/macrotab.c, src/bison.simple: Likewise.
+
+2001-08-31  Pascal Bart  <pascal.bart@epita.fr>, Marc Autret  <autret_m@epita.fr>
+
+	* src/reader.c (read_additionnal_code): Rename %%user_code to
+	%%epilogue.
+	* src/output.c (output): Rename %%declarations to %%prologue.
+	* src/bison.simple: Echo modifications.
+
+2001-08-31  Marc Autret  <autret_m@epita.fr>
+
+	* src/reader.c (readgram): CleanUp.
+	(output_token_defines): Likewise.
+	(packsymbols): Likewise.
+	(reader): Likewise.
+	* src/output.c (output): CPP-out useless code.
+
+2001-08-31  Pascal Bart  <pascal.bart@epita.fr>
+
+	* src/reader.c (reader): Delete obsolete call to function
+	output_trailers and output_headers.
+	* src/output.h: Remove obsolete functions prototypes of output_headers
+	and output_trailers.
+
+2001-08-30  Pascal Bart  <pascal.bart@epita.fr>
+
+	* src/main.c: Include macrotab.h.
+	* src/macrotab.h (macro_entry_s): Constify fields.
+	Adjust functions prototypes.
+	* src/macrotab.c (macro_insert): Constify key and value.
+	(macro_find): Constify key.
+	(macro_insert): Include 'xalloc.h'
+	(macro_insert): Use XMALLOC.
+	(macro_find): Constify return value.
+	* src/output.c (output_table_data): Rename table to table_data.
+	(output_parser): Constify macro_key, macro_value.
+
+2001-08-30  Marc Autret  <autret_m@epita.fr>
+
+	* src/reader.c (parse_skel_decl): New.
+	(read_declarations): Add case `tok_skel', call parse_skel_decl ().
+	* src/lex.h (token_t): New token `tok_skel'.
+	* src/lex.c (percent_table): Add skeleton option entry.
+	Standardize.
+
+2001-08-29  Marc Autret  <autret_m@epita.fr>
+
+	* src/bison.simple: Add %%user_code directive at the end.
+	* src/reader.c (read_additionnal_code): New.
+	(reader): Use it.
+	* src/output.c (output_program): Remove.
+	(output): Update.
+
+2001-08-28  Marc Autret  <autret_m@epita.fr>
+
+	* src/output.c (output_actions): Clean up.
+	(output_gram): CPP-out useless code.
+	* src/reader.c (reader): Clean up, CPP-out useless code.
+
+2001-08-28  Pascal Bart  <pascal.bart@epita.fr>
+
+	* src/output.c (output): Copy attrs_obstack in the '%%definitions'
+	directive.
+	* src/bison.simple: Add `%%definitions'.
+
+2001-08-28  Marc Autret  <autret_m@epita.fr>
+
+	* config/depcomp: New file.
+
+2001-08-27  Paul Eggert  <eggert@twinsun.com>
+
+	* src/bison.simple (yyparse): Don't take the address of an
+	item before the start of an array, as that doesn't conform to
+	the C Standard.
+
+2001-08-27  Robert Anisko  <robert.anisko@epita.fr>
+
+	* src/output.c (output): Remove the initialization of the macro
+	obstack.  It was done too late here.
+
+	* src/reader.c (parse_macro_decl): Fix.  Use of the macro obstack was
+	completely wrong.
+	(reader): Initialize the macro obstack here, since we need it to grow
+	'%define' directives.
+
+	* src/reader.h: Declare the macro obstack as extern.
+
+2001-08-27  Robert Anisko  <robert.anisko@epita.fr>
+
+	* src/output.c (output_parser): Fix.  Store single '%' characters in
+	the output obstack instead of throwing them away.
+
+2001-08-27  Akim Demaille  <akim@epita.fr>
+
+	* Makefile.am (AUTOMAKE_OPTIONS): 1.5.
+
+2001-08-25  Robert Anisko  <robert.anisko@epita.fr>
+
+	* lib/Makefile.am: Adjust.
+
+2001-08-25  Robert Anisko  <robert.anisko@epita.fr>
+
+	* src/bison.simple: Update and add '%%' directives.
+
+2001-08-25  Robert Anisko  <robert.anisko@epita.fr>
+
+	* src/reader.c (reader): Remove calls to 'output_headers' and
+	'output_trailers'. Remove some C output.
+	(readgram): Disable a piece of code that was writing a default
+	definition for 'YYSTYPE'.
+	(reader_output_yylsp): Remove.
+	(packsymbols): Output token defintions to a macro.
+	(copy_definition): Disable C output.
+
+	* src/reader.c (parse_macro_decl): New function used to parse macro
+	declarations.
+	(copy_string2): Put the body of copy_string into this new function.
+	Add a parameter to let the caller choose whether he wants to copy the
+	string delimiters or not.
+	(copy_string): Be a simple call to copy_string2 with the last argument
+	bound to true.
+	(read_declarations): Add case for macro definition.
+	(copy_identifier): New.
+	(parse_macro_decl): Read macro identifiers using copy_identifier
+	rather than lex.
+
+2001-08-25  Robert Anisko  <robert.anisko@epita.fr>
+
+	* src/output.c (prepare): Add prefixed names.
+	(output_parser): Output semantic actions.
+	(output_parser): Fix bug on '%%line' directives.
+
+	* src/output.c (output_headers): Remove. The C code printed by this
+	function should now be in the skeletons.
+	(output_trailers): Remove.
+	(output): Disable call to 'reader_output_yylsp'.
+	(output_rule_data): Do not output tables to the table obstack.
+
+	* src/output.c: Remove some C dedicated output.
+	Improve the use of macro and output obstacks.
+	(output_defines): Remove.
+
+	* src/output.c (output_token_translations): Associate 'translate'
+	table with a macro. No output to the table obstack.
+	(output_gram): Same for 'rhs' and 'prhs'.
+	(output_stos): Same for 'stos'.
+	(output_rule_data): Same for 'r1' and 'r2'.
+	(token_actions): Same for 'defact'.
+	(goto_actions): Same for 'defgoto'.
+	(output_base): Same for 'pact' and 'pgoto'.
+	(output_table): Same for 'table'.
+	(output_check): Same for 'check'.
+
+	* src/output.c (output_table_data): New function.
+	(output_short_table): Remove.
+	(output_short_or_char_table): Remove.
+
+	* src/output.c (output_parser): Replace most of the skeleton copy code
+	with something new. Skeletons are now processed character by character
+	rather than line by line, and Bison looks for '%%' macros. This is the
+	first step in making Bison's output process (a lot) more flexible.
+	(output_parser): Use the macro table.
+
+2001-08-25  Robert Anisko  <robert.anisko@epita.fr>
+
+	* src/main.c (main): Initialize the macro table.
+
+2001-08-25  Robert Anisko  <robert.anisko@epita.fr>
+
+	* src/lex.c (percent_table): Add tok_define.
+	* src/lex.h: Add tok_define.
+
+2001-08-25  Robert Anisko  <robert.anisko@epita.fr>
+
+	* src/macrotab.c: New file.
+	* src/macrotab.h: New file.
+	* src/Makefile.am: Update.
+
+2001-08-25  Robert Anisko  <robert.anisko@epita.fr>
+
+	* lib/hash.c: New file.
+	* lib/hash.h: New file.
+	* lib/Makefile.am: Update.
+
+2001-08-15  Akim Demaille  <akim@epita.fr>
+
+	Version 1.28c.
+
+2001-08-15  Marc Autret  <autret_m@epita.fr>
+
+	* src/reader.c (readgram): Indent output macro YYSTYPE.
+	(packsymbols): Likewise.
+	(output_token_defines): Likewise.
+	* src/files.c: Standardize.
+	(compute_header_macro): New.
+	(defines_obstack_save): New. Use compute_header_macro.
+	(output_files): Update. Use defines_obstack_save.
+
+2001-08-15  Akim Demaille  <akim@epita.fr>
+
+	* doc/bison.texinfo (Table of Symbols): Document
+	YYSTACK_USE_ALLOCA.
+
+2001-08-15  Akim Demaille  <akim@epita.fr>
+
+	* missing: Update from CVS Automake.
+	* config/config.guess, config/config.sub, config/texinfo.tex:
+	Update from gnu.org.
+
+2001-08-15  Akim Demaille  <akim@epita.fr>
+
+	* Makefile.maint: Sync with CVS Autoconf.
+
+2001-08-14  Pascal Bart  <pascal.bart@epita.fr>
+
+	* doc/bison.texinfo: Include GNU Free Documentation License from
+	`fdl.texi'.
+	* doc/fdl.texi: Add to package.
+
+2001-08-14  Marc Autret  <autret_m@epita.fr>
+
+	Turn on %{source,header}_extension features.
+
+	* src/lex.c (percent_table): Un-CPP out header_extension and
+	source_extension.
+	* src/files.c (compute_exts_from_gf): Compare pointers with NULL.
+	(compute_exts_from_src): Remove conditions. It restores priorities
+	between options.
+
+2001-08-14  Marc Autret  <autret_m@epita.fr>
+
+	* src/files.c (compute_base_names): Add extensions computing when
+	`--file-prefix' used.
+	Standardize function calls.
+
+2001-08-13  Marc Autret  <autret_m@epita.fr>
+
+	* src/bison.simple (YYSTACK_USE_ALLOCA): Changed to allow users
+	defining it (defined but null disables alloca).
+
+2001-08-13  Marc Autret  <autret_m@epita.fr>
+
+	* src/bison.simple (_yy_memcpy): CPP reformat.
+
+2001-08-13  Pascal Bart  <pascal.bart@epita.fr>
+
+	* tests/atconfig.in (CPPFLAGS): Fix.
+
+2001-08-10  Pascal Bart  <pascal.bart@epita.fr>
+
+	* doc/bison.texinfo: Include GNU General Public License from
+	`gpl.texi'.
+	* doc/gpl.texi: Add to package.
+
+2001-08-10  Marc Autret  <autret_m@epita.fr>
+
+	* src/print_graph.h: Fix.
+	* src/reader.c (read_declarations): Use parse_header_extension_decl ().
+
+2001-08-10  Akim Demaille  <akim@epita.fr>
+
+	* src/system.h: Provide default declarations for stpcpy, strndup,
+	and strnlen.
+
+2001-08-10  Robert Anisko  <anisko_r@epita.fr>
+
+	* doc/bison.texinfo (Locations): Update @$ stuff.
+
+2001-08-09  Robert Anisko  <anisko_r@epita.fr>
+
+	* src/bison.simple (YYLLOC_DEFAULT): Update.
+	(yyparse): Adjust.
+
+2001-08-08  Marc Autret  <autret_m@epita.fr>
+
+	* doc/bison.texinfo: Change @samp{$<@dots{}>} to
+	@samp{$<@dots{}>@var{n}} in Section Actions in Mid-Rule.
+	Reported by Fabrice Bauzac.
+
+2001-08-08  Marc Autret  <autret_m@epita.fr>
+
+	* src/vcg_default.h: Use NULL instead of 0 to initialize pointers.
+	* src/vcg.c (output_node): Fix.
+	* src/vcg.h: Cleanup.
+	* src/print_graph.c: Add comments.
+	(node_output_size): New global variable. Simplify the formatting of
+	the VCG graph output.
+	(print_actions): Unused code is now used. It notifies the final state
+	and no action states in the VCG graph. It also give the reduce actions.
+	The `shift and goto' edges are red and the `go to state' edges are
+	blue.
+	Get the current node name and node_obstack by argument.
+	(node_obstack): New variable.
+	(print_state): Manage node_obstack.
+	(print_core): Use node_obstack given by argument.
+	A node is not only computed here but in print_actions also.
+	(print_graph): CPP out useless code instead of commenting it.
+
+2001-08-07  Pascal Bart  <pascal.bart@epita.fr>
+
+	* tests/atconfig.in (CPPFLAGS): Fix.
+
+2001-08-07  Akim Demaille  <akim@epita.fr>
+
+	* src/print_graph.c (quote): New.
+	(print_core): Use it.
+
+2001-08-06  Akim Demaille  <akim@epita.fr>, Marc Autret  <autret_m@epita.fr>
+
+	* src/vcg.c (complain.h): Include it.
+	Unepitaize `return' invocations.
+	[NDEBUG] (main): Remove.
+	* src/vcg.h (node_t, edge_t, graph_t): Constify the char * members.
+	* src/files.c (open_files): Initialize graph_obstack.
+	* src/print_graph.c (print_actions): CPP out useless code.
+	(print_core): Don't output the last `\n' in labels.
+	Use `quote'.
+	* src/files.c (output_files): Output the VCG file.
+	* src/main.c (main): Invoke print_graph ();
+
+2001-08-06  Marc Autret  <autret_m@epita.fr>
+
+	Automaton VCG graph output.
+	Using option ``-g'' or long option ``--graph'', you can generate
+	a gram_filename.vcg file containing a VCG description of the LALR (1)
+	automaton of your grammar.
+
+	* src/main.c: Call to print_graph() function.
+	* src/getargs.h: Update.
+	* src/getargs.c (options): Update to catch `-g' and `--graph' options.
+	(graph_flag): New flag.
+	(longopts): Update.
+	(getargs): Add case `g'.
+	* src/files.c (graph_obstack): New obstack struct.
+	(open_files): Initialize new obstack.
+	(output_files): Saves graph_obstack if required.
+	* src/files.h (graph_obstack): New extern declaration.
+	* src/Makefile.am: Add new source files.
+
+2001-08-06  Marc Autret  <autret_m@epita.fr>
+
+	* src/print_graph.c, src/print_graph.h (graph): New.
+	* src/vcg.h: New file.
+	* src/vcg.c: New file, VCG graph handling.
+
+2001-08-06  Marc Autret  <autret_m@epita.fr>
+
+	Add of %source_extension and %header_extension which specify
+	the source or/and the header output file extension.
+
+	* src/files.c (compute_base_names): Remove initialisation of
+	src_extension and header_extension.
+	(compute_exts_from_gf): Update.
+	(compute_exts_from_src): Update.
+	(output_files): Update.
+	* src/reader.c (parse_header_extension_decl): New.
+	(parse_source_extension_decl): New.
+	(read_declarations): New case statements for the new tokens.
+	* src/lex.c (percent_table): Add entries for %source_extension
+	and %header_extension.
+	* src/lex.h (token_e): New tokens tok_hdrext and tok_srcext.
+
+2001-08-06  Marc Autret  <autret_m@epita.fr>
+
+	* configure.in: Bump to 1.28c.
+	* doc/bison.texinfo: Texinfo thingies.
+
+2001-08-04  Pascal Bart  <pascal.bart@epita.fr>
+
+	* tests/atconfig.in (CPPFLAGS): Add.
+	* tests/calc.at (AT_CHECK): Use CPPFLAGS.
+
+2001-08-03  Akim Demaille  <akim@epita.fr>
+
+	Version 1.28b.
+
+2001-08-03  Akim Demaille  <akim@epita.fr>
+
+	* tests/Makefile.am (check-local): Ship testsuite.
+	* tests/calc.at (_AT_DATA_CALC_Y): Prototype all the functions.
+	Include `string.h'.
+
+2001-08-03  Akim Demaille  <akim@epita.fr>
+
+	* configure.in: Try using -Wformat when compiling.
+
+2001-08-03  Akim Demaille  <akim@epita.fr>
+
+	* configure.in: Bump to 1.28b.
+
+2001-08-03  Akim Demaille  <akim@epita.fr>
+
+	* src/complain.c: Adjust strerror_r portability issues.
+
+2001-08-03  Akim Demaille  <akim@epita.fr>
+
+	Version 1.28a.
+
+2001-08-03  Akim Demaille  <akim@epita.fr>
+
+	* src/getargs.c, src/getarg.h (skeleton)): Constify.
+	* src/lex.c (literalchar): Avoid name clashes on `buf'.
+	* src/getargs.c: Include complain.h.
+	* src/files.c, src/files.h (skeleton_find): Avoid name clashes.
+	* lib/quotearg.c, lib/quotearg.h: Update from fileutils 4.1.
+
+2001-08-03  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (readgram): Display hidden chars in error messages.
+
+2001-08-03  Akim Demaille  <akim@epita.fr>
+
+	Update to gettext 0.10.39.
+
+2001-08-03  Akim Demaille  <akim@epita.fr>
+
+	* lib/strspn.c: New.
+
+2001-08-01  Marc Autret  <autret_m@epita.fr>
+
+	* doc/bison.texinfo: Update.
+	* doc/bison.1 (mandoc): Update.
+	* src/system.h (EXT_GUARD_C, EXT_STYPE_H): Remove .c and .h.
+	* src/files.c: Support output files extensions computing.
+	(src_extension): New static variable.
+	(header_extension): New static variable.
+	(tr): New function.
+	(get_extension_index): New function, gets the index of an extension
+	filename in a string.
+	(compute_exts_from_gf): New function, computes extensions from the
+	grammar file extension.
+	(compute_exts_from_src): New functions, computes extensions from the
+	C source file extension, file given by ``-o'' option.
+	(compute_base_names): Update.
+	(output_files): Update.
+
+2001-08-01  Robert Anisko  <anisko_r@epita.fr>
+
+	* doc/bison.texi: Document @$.
+	(Locations): New section.
+
+2001-07-18  Akim Demaille  <akim@epita.fr>
+
+	* Makefile.maint, GNUmakefile: New, from Autoconf 2.52.
+	* config/prev-version.txt, config/move-if-change: New.
+	* Makefile.am: Adjust.
+
+2001-07-08  Pascal Bart  <pascal.bart@epita.fr>
+
+	* src/bison.simple (yyparse): Suppress warning `comparaison
+	between signed and unsigned'.
+
+2001-07-05  Pascal Bart  <pascal.bart@epita.fr>
+
+	* src/getargs.h (raw_flag): Remove.
+	* src/getargs.c: Die on `-r'/`--raw'.
+	* src/lex.c (parse_percent_token): Die on `%raw'.
+	* src/reader.c (output_token_defines): Suppress call to `raw_flag'.
+	* tests/calc.at: Suppress test with option `--raw'.
+
+2001-07-14  Akim Demaille  <akim@epita.fr>
+
+	* config/: New.
+	* configure.in: Require Autoconf 2.50.
+	Update to gettext 0.10.38.
+
+2001-03-16  Akim Demaille  <akim@epita.fr>
+
+	* doc/bison.texinfo: ANSIfy the examples.
+
+2001-03-16  Akim Demaille  <akim@epita.fr>
+
+	* getargs.c (skeleton): New variable.
+	(longopts): --skeleton is a new option.
+	(shortopts, getargs): -S is a new option.
+	* getargs.h: Declare skeleton.
+	* output.c (output_parser): Use it.
+
+2001-03-16  Akim Demaille  <akim@epita.fr>
+
+	* m4/strerror_r.m4: New.
+	* m4/error.m4: Run AC_FUNC_STRERROR_R.
+	* lib/error.h, lib/error.c: Update.
+
+2001-03-16  Akim Demaille  <akim@epita.fr>
+
+	* src/getargs.c (longopts): Clean up.
+
+2001-02-21  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (gensym): `gensym_count' is your own.
+	Use a static buf to create the symbol name, as token_buffer is no
+	longer a buffer.
+
+2001-02-08  Akim Demaille  <akim@epita.fr>
+
+	* src/conflicts.c (conflict_report): Be sure not to append to res
+	between two calls, which could happen if both first sprintf were
+	skipped, but not the first cp += strlen.
+
+2001-02-08  Akim Demaille  <akim@epita.fr>
+
+	* lib/memchr.c, lib/stpcpy.c, lib/strndup.c, lib/strnlen.c:
+	New, from fileutils 4.0.37.
+	* configure.in: Require Autoconf 2.49c.  I took some time before
+	making this decision.  This is the only way out for portability
+	issues in Bison, it would mean way too much duplicate effort to
+	import in Bison features implemented in 2.49c since 2.13.
+	AC_REPLACE_FUNCS and AC_CHECK_DECLS the functions above.
+
+2001-02-02  Akim Demaille  <akim@epita.fr>
+
+	* lib/malloc.c, lib/realloc.c: New, from the fileutils 4.0.37.
+	* lib/xalloc.h, lib/xmalloc.c: Update.
+
+2001-01-19  Akim Demaille  <akim@epita.fr>
+
+	Get rid of the ad hoc handling of token_buffer in the scanner: use
+	the obstacks.
+
+	* src/lex.c (token_obstack): New.
+	(init_lex): Initialize it.  No longer call...
+	(grow_token_buffer): this.  Remove it.
+	Adjust all the places which used it to use the obstack.
+
+2001-01-19  Akim Demaille  <akim@epita.fr>
+
+	* src/lex.h: Rename all the tokens:
+	s/\bENDFILE\b/tok_eof/g;
+	s/\bIDENTIFIER\b/tok_identifier/g;
+	etc.
+	Let them be enums, not #define, to ease debugging.
+	Adjust all the code.
+
+2001-01-18  Akim Demaille  <akim@epita.fr>
+
+	* src/lex.h (MAXTOKEN, maxtoken, grow_token_buffer): Remove, private.
+	* src/lex.c (maxtoken, grow_token_buffer): Static.
+
+2001-01-18  Akim Demaille  <akim@epita.fr>
+
+	Since we now use obstacks, more % directives can be enabled.
+
+	* src/lex.c (percent_table): Also accept `%yacc',
+	`%fixed_output_files', `%defines', `%no_parser', `%verbose', and
+	`%debug'.
+	Handle the actions for `%semantic_parser' and `%pure_parser' here,
+	instead of returning a token.
+	* src/lex.h (SEMANTIC_PARSER, PURE_PARSER): Remove, unused.
+	* src/reader.c (read_declarations): Adjust.
+	* src/files.c (open_files): Don't call `compute_base_names', don't
+	compute `attrsfile' since they depend upon data which might be
+	*in* the input file now.
+	(output_files): Do it here.
+	* src/output.c (output_headers): Document the fact that this patch
+	introduces a guaranteed SEGV for semantic parsers.
+	* doc/bison.texinfo: Document them.
+	* tests/suite.at: Exercise these %options.
+
+2000-12-20  Akim Demaille  <akim@epita.fr>
+
+	Also handle the output file (--verbose) with obstacks.
+
+	* files.c (foutput): Remove.
+	(output_obstack): New.
+	Adjust all dependencies.
+	* src/conflicts.c: Return a string.
+	* src/system.h (obstack_grow_string): Rename as...
+	(obstack_sgrow): this.  Be ready to work with non literals.
+	(obstack_fgrow4): New.
+
+2000-12-20  Akim Demaille  <akim@epita.fr>
+
+	* src/files.c (open_files): Fix the computation of short_base_name
+	in the case of `-o foo.tab.c'.
+
+2000-12-20  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (copy_string, copy_comment, copy_comment2, copy_at)
+	(copy_dollar): Now that everything uses obstacks, get rid of the
+	FILE * parameters.
+
+2000-12-20  Akim Demaille  <akim@epita.fr>
+
+	* src/files.c (open_files): Actually the `.output' file is based
+	on the short_base_name, not base_name.
+	* tests/suite.at (Checking output file names): Adjust.
+
+2000-12-20  Akim Demaille  <akim@epita.fr>
+
+	* src/bison.s1: Remove, we now use directly...
+	* src/bison.simple: this.
+	* src/Makefile.am: Use pkgdata instead of data.
+
+2000-12-20  Akim Demaille  <akim@epita.fr>
+
+	* src/files.c (guard_obstack): New.
+	(open_files): Initialize it.
+	(output_files): Dump it...
+	* src/files.h: Export it.
+	* src/reader.c (copy_guard): Use it.
+
+2000-12-19  Akim Demaille  <akim@epita.fr>
+
+	* src/files.c (outfile, defsfile, actfile): Removed as global
+	vars.
+	(open_files): Don't compute them.
+	(output_files): Adjust.
+	(base_name, short_base_name): Be global.
+	Adjust dependencies.
+
+2000-12-19  Akim Demaille  <akim@epita.fr>
+
+	* src/files.c (strsuffix): New.
+	(stringappend): Be just like strcat but allocate.
+	(base_names): Eve out from open_files.
+	Try to simplify the rather hairy computation of base_name and
+	short_base_name.
+	(open_files): Use it.
+	* tests/suite.at (Checking output file names): New test.
+
+2000-12-19  Akim Demaille  <akim@epita.fr>
+
+	* src/system.h (obstack_grow_literal_string): Rename as...
+	(obstack_grow_string): this.
+	* src/output.c (output_parser): Recognize `%% actions' instead of
+	`$'.
+	* src/bison.s1: s/$/%% actions/.
+	* src/bison.hairy: Likewise.
+
+2000-12-19  Akim Demaille  <akim@epita.fr>
+
+	* src/output.c (output_parser): Compute the `#line' lines when
+	there are.
+	* src/Makefile.am (bison.simple): Be a simple copy of bison.s1.
+	Suggested by Hans Aberg.
+
+2000-12-19  Akim Demaille  <akim@epita.fr>
+
+	Let the handling of the skeleton files be local to the procedures
+	that use it.
+
+	* src/files.c (xfopen, xfclose, skeleton_find, guardfile): No
+	longer static.
+	(fparser, open_extra_files): Remove.
+	(open_files, output_files): Don't take care of fparser.
+	* src/files.h: Adjust.
+	* src/output.c (output_parser): Open and close the file to the
+	skeleton.
+	* src/reader.c (read_declarations): When %semantic_parser, open
+	fguard.
+
+2000-12-19  Akim Demaille  <akim@epita.fr>
+
+	* src/file.h (BISON_SIMPLE, BISON_HAIRY): Move from here...
+	* src/system.h (BISON_SIMPLE, BISON_HAIRY): ... to here.
+
+2000-12-19  Akim Demaille  <akim@epita.fr>
+
+	* src/files.c (open_files): Yipee!  We no longer need all the code
+	looking for `/tmp' since we have no tmp file.
+
+2000-12-19  Akim Demaille  <akim@epita.fr>
+
+	* src/system.h (EXT_TAB, EXT_OUTPUT, EXT_STYPE_H, EXT_GUARD_C):
+	New macros.
+	* src/files.c (open_files): Less dependency on MSDOS etc.
+
+2000-12-14  Akim Demaille  <akim@epita.fr>
+
+	* src/bison.s1 (YYLLOC_DEFAULT): New macro.
+	Provide a default definition.
+	Use it when executing the default @ action.
+	* src/reader.c (reader_output_yylsp): No longer include
+	`timestamp' and `text' in the default YYLTYPE.
+
+2000-12-12  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (copy_definition, parse_union_decl, copy_action)
+	(copy_guard): Quote the file names.
+	Reported by Laurent Mascherpa.
+
+2000-12-12  Akim Demaille  <akim@epita.fr>
+
+	* src/output.c (output_headers, output_program, output): Be sure
+	to escape special characters when outputting filenames.
+	(ACTSTR_PROLOGUE, ACTSTR_EPILOGUE): Remove.
+	(output_headers): Don't depend on them, Use ACTSTR.
+
+2000-11-17  Akim Demaille  <akim@epita.fr>
+
+	* lib/obstack.h: Formatting changes.
+	(obstack_grow, obstack_grow0): Don't cast WHERE at all: it
+	prevents type checking.
+	(obstack_ptr_grow, obstack_ptr_grow_fast): When assigning, don't
+	cast the value to (void *): assigning a `foo *' to a `void *'
+	variable is valid.
+	(obstack_int_grow, obstack_int_grow_fast): Don't cast AINT to int.
+	* src/reader.c (parse_union_decl): Typo: use obstack_1grow to
+	append characters.
+
+2000-11-17  Akim Demaille  <akim@epita.fr>
+
+	* tests/Makefile.am (suite.m4, regression.m4, calc.m4): Rename
+	as...
+	(suite.m4, regression.m4, calc.m4): these.
+	* tests/atgeneral.m4: Update from CVS Autoconf.
+
+2000-11-17  Akim Demaille  <akim@epita.fr>
+
+	* tests/regression.m4 (%union and --defines): New test,
+	demonstrating a current bug in the obstack implementation.
+
+2000-11-17  Akim Demaille  <akim@epita.fr>
+
+	* src/bison.s1 (_YY_DECL_VARIABLES, YY_DECL_VARIABLES): New
+	macros.
+	Use them to declare the variables which are global or local to
+	`yyparse'.
+
+2000-11-17  Akim Demaille  <akim@epita.fr>
+
+	* acconfig.h: Remove, no longer used.
+
+2000-11-07  Akim Demaille  <akim@epita.fr>
+
+	* src: s/Copyright (C)/Copyright/g.
+
+2000-11-07  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (reader): #define YYLSP_NEEDED to 1 instead of just
+	defining.
+	* src/bison.s1: s/#ifdef YYLSP_NEEDED/#if YYLSP_NEEDED/.
+
+2000-11-07  Akim Demaille  <akim@epita.fr>
+
+	* src/bison.s1 (YYLEX): Use #if instead of #ifdef.
+	Merge in a single CPP if/else.
+
+2000-11-07  Akim Demaille  <akim@epita.fr>
+
+	* src/output.c (output): Remove useless variables.
+	* lib/obstack.c (obstack_grow, obstack_grow0): Rename the second
+	argument `data' for consistency with the prototypes.
+	Qualify it `const'.
+	(obstack_copy, obstack_copy0): Rename the second argument as
+	`address' for consistency.  Qualify it `const'.
+	* lib/obstack.h (obstack_copy, obstack_copy0, obstack_grow)
+	(obstack_grow0, obstack_ptr_grow, obstack_ptr_grow_fast): Qualify
+	`const' their input argument (`data' or `address').
+	Adjust the corresponding macros to include `const' in casts.
+
+2000-11-03  Akim Demaille  <akim@epita.fr>
+
+	* src/Makefile.am (INCLUDES): s/PFILE/BISON_SIMPLE/.
+	s/PFILE1/BISON_HAIRY/.
+	Adjust dependencies.
+
+2000-11-03  Akim Demaille  <akim@epita.fr>
+
+	For some reason, this was not applied.
+
+	* src/files.c [VMS]: No longer include `ssdef.h', no longer define
+	`unlink': it's no longer used.
+
+2000-11-03  Akim Demaille  <akim@epita.fr>
+
+	* src/files.c (skeleton_find): New function, eved out of...
+	(open_files, open_extra_files): here.
+
+2000-11-03  Akim Demaille  <akim@epita.fr>
+
+	Don't use `atexit'.
+
+	* src/files.c (obstack_save): New function.
+	(done): Rename as...
+	(output_files): this.
+	Use `obstack_save'.
+	* src/main.c (main): Don't use `atexit' to register `done', since
+	it no longer has to remove tmp files, just call `output_files'
+	when there are no errors.
+
+2000-11-02  Akim Demaille  <akim@epita.fr>
+
+	* src/files.c [VMS]: No longer include `ssdef.h', no longer define
+	`unlink': it's no longer used.
+	* src/files.h: Formatting changes.
+
+2000-11-02  Akim Demaille  <akim@epita.fr>
+
+	Remove the last uses of mktemp and unlink/delete.
+
+	* src/files.c (fdefines, ftable): Removed.
+	(defines_ostack, table_obstack): New.
+	Adjust dependencies of the former into uses of the latter.
+	* src/output.c (output_short_or_char_table, output_short_table):
+	Convert to using obstacks.
+	* src/reader.c (copy_comment2): Accept one FILE * and two
+	obstacks.
+	(output_token_defines, reader_output_yylsp): Use obstacks.
+	* src/system.h (obstack_fgrow3): New.
+	* po/POTFILES.in: Adjust.
+
+2000-11-01  Akim Demaille  <akim@epita.fr>
+
+	Change each use of `fattrs' into a use of `attrs_obstack'.
+
+	* src/reader.c (copy_at): Typo: s/yylloc/yyloc/.
+	* src/files.c (fattrs): Remove.
+	(attrs_obstack): New.
+	Adjust all dependencies.
+	(done): If SEMANTIC_PARSER, dump attrs_obstack into attrsfile.
+
+2000-11-01  Akim Demaille  <akim@epita.fr>
+
+	Introduce obstacks.
+	Change each use of `faction' into a use of `action_obstack'.
+
+	* lib/obstack.h, lib/obstack.c: New files.
+	* src/files.c (faction): Remove.
+	(action_obstack): New.
+	Adjust all dependencies.
+
+2000-10-20  Akim Demaille  <akim@epita.fr>
+
+	* lib/quote.h (PARAMS): New macro.  Use it.
+
+2000-10-16  Akim Demaille  <akim@epita.fr>
+
+	* src/output.c (output_short_or_char_table): New function.
+	(output_short_table, output_token_translations): Use it.
+	(goto_actions): Use output_short_table.
+
+2000-10-16  Akim Demaille  <akim@epita.fr>
+
+	* src/symtab.c (bucket_new): New function.
+	(getsym): Use it.
+
+	* src/output.c (output_short_table): New argument to display the
+	comment associated with the table.
+	Adjust dependencies.
+	(output_gram): Use it.
+	(output_rule_data): Nicer output layout for YYTNAME.
+
+2000-10-16  Akim Demaille  <akim@epita.fr>
+
+	* src/lex.c (read_typename): New function.
+	(lex): Use it.
+	* src/reader.c (copy_dollar): Likewise.
+
+2000-10-16  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (copy_comment2): Expect the input stream to be on
+	the `/' which is suspected to open a comment, instead of being
+	called after `//' or `/*' was read.
+	(copy_comment, copy_definition, parse_union_decl, copy_action)
+	(copy_guard): Adjust.
+
+2000-10-16  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (parse_expect_decl): Use `skip_white_space' and
+	`read_signed_integer'.
+
+2000-10-16  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (copy_dollar): New function.
+	(copy_guard, copy_action): Use it.
+
+2000-10-16  Akim Demaille  <akim@epita.fr>
+
+	* lib/quote.h, lib/quote.c, lib/quotearg.h, lib/quotearg.c:
+	* m4/prereq.m4, m4/c-bs-a.m4, m4/mbstate.m4:
+	New files, from Fileutils 4.0.27.
+	* src/main.c (printable_version): Remove.
+	* src/lex.c, src/reader.c: Use `quote'.
+
+2000-10-04  Akim Demaille  <akim@epita.fr>
+
+	* lib/error.c, lib/error.h: New files, needed by xmalloc.c.
+
+2000-10-04  Akim Demaille  <akim@epita.fr>
+
+	* doc/bison.texinfo: Various typos spotted by Neil Booth.
+
+2000-10-04  Akim Demaille  <akim@epita.fr>
+
+	When a literal string is used to define two different tokens,
+	`bison -v' segfaults.
+	Reported by Piotr Gackiewicz, and fixed by Neil Booth.
+
+	* tests/regression.m4: New file.
+	Include the core of the sample provided by Piotr Gackiewicz.
+	* src/reader.c (parse_token_decl): Diagnose bad cases, and proceed
+	properly.
+
+2000-10-04  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (parse_expect_decl): Keep `count' within the size
+	of `buffer'.
+	From Neil Booth.
+
+2000-10-02  Paul Eggert  <eggert@twinsun.com>
+
+	* bison.s1 (yyparse): Assign the default value
+	unconditionally, to avoid a GCC warning and make the parser a
+	tad smaller.
+
+2000-10-02  Akim Demaille  <akim@epita.fr>
+
+	* src/getargs.c (getargs): Don't dump `--help' on unrecognized
+	options.
+
+2000-10-02  Akim Demaille  <akim@epita.fr>
+
+	* src/derives.c, src/print.c, src/reduce.c: To ease the
+	translation, move some `\n' out of the translated strings.
+
+2000-10-02  Akim Demaille  <akim@epita.fr>
+
+	The location tracking mechanism is precious for parse error
+	messages.  Nevertheless, it is enabled only when `@n' is used in
+	the grammar, which is a different issue (you can use it in error
+	message, but not in the grammar per se).  Therefore, there should
+	be another means to enable it.
+
+	* src/getargs.c (getargs): Support `--locations'.
+	(usage): Report it.
+	* src/getargs.h (locationsflag): Export it.
+	* src/lex.c (percent_table): Support `%locations'.
+	* src/reader.c (yylsp_needed): Remove this variable, now replaced
+	with `locationsflag'.
+	* doc/bison.texinfo: Document `--locations' and `%locations'.
+	Sort the options.
+	* tests/calc.m4: Test it.
+
+	For regularity of the names, replace each
+	(nolineflag, toknumflag, rawtokenumflag, noparserflag): with...
+	(no_lineflag, token_tableflag, rawflag, no_parserflag): this.
+	In addition replace each `flag' with `_flag'.
+
+2000-10-02  Akim Demaille  <akim@epita.fr>
+
+	Also test parse error messages, including with YYERROR_VERBOSE.
+
+	* tests/calc.m4 (calc.y): Add support for `exp = exp' (non
+	associative).
+	Use it to check the computations.
+	Use it to check `nonassoc' is honored.
+	(AT_DATA_CALC_Y): Equip `calc.y' with YYERROR_VERBOSE when passed
+	`--yyerror-verbose'.
+	(_AT_CHECK_CALC): Adjust to this option.
+	(_AT_CHECK_CALC_ERROR): New macro to check parse error messages.
+
+2000-10-02  Akim Demaille  <akim@epita.fr>
+
+	Test also `--verbose', `--defines' and `--name-prefix'.  Testing
+	the latter demonstrates a flaw in the handling of non debugging
+	parsers introduced by myself on 2000-03-16: `#define yydebug 0'
+	was used in order to simplify:
+
+	#if YYDEBUG
+	if (yydebug)
+	{
+	...
+	}
+	#endif
+
+	into
+
+	if (yydebug)
+	{
+	...
+	}
+
+	unfortunately this leads to a CPP conflict when
+	`--name-prefix=foo' is used since it produces `#define yydebug
+	foodebug'.
+
+	* src/bison.s1 [!YYDEBUG]: Do not define yydebug.
+	(YYDPRINTF): New macro.
+	Spread its use.
+	* tests/calc.m4 (AT_CHECK_CALC): Do require a title, build it from
+	the bison options.
+	Also test `--verbose', `--defines' and `--name-prefix'.
+
+2000-10-02  Akim Demaille  <akim@epita.fr>
+
+	Improve the readability of the produced parsers.
+
+	* src/bison.s1: Formatting changes.
+	Improve the comment related to the `$' mark.
+	(yydefault): Don't fall through to `yyresume': `goto' there.
+	* src/output.c (output_parser): When the `$' is met, skip the end
+	of its line.
+	New variable, `number_of_dollar_signs', to check there's exactly
+	one `$' in the parser skeleton.
+
+2000-10-02  Akim Demaille  <akim@epita.fr>
+
+	* lib/xstrdup.c: New file, from the fileutils.
+	* src/reader.c (parse_token_decl, get_type_name, parse_type_decl)
+	(parse_assoc_decl, parse_thong_decl, get_type): Use `xstrdup'
+	instead of strlen + xmalloc + strcpy.
+	* src/symtab.c (copys): Remove, use xstrdup instead.
+
+2000-10-02  Akim Demaille  <akim@epita.fr>
+
+	* src/gram.h (associativity): New enum type which replaces the
+	former CPP macros `RIGHT_ASSOC', `LEFT_ASSOC' and `NON_ASSOC' with
+	`right_assoc', `left_assoc' and `non_assoc'.
+	Adjust all dependencies.
+	* src/reader.c: Formatting changes.
+	(LTYPESTR): Don't define it, use it as a literal in
+	`reader_output_yylsp'.
+	* src/symtab.h (symbol_class): New enum type which replaces the
+	former CPP macros `SUNKNOWN', `STOKEN and `SNTERM' with
+	`sunknown', `stoken and `snterm'.
+
+2000-10-02  Akim Demaille  <akim@epita.fr>
+
+	* src/getargs.c (fixed_outfiles): Rename as...
+	(yaccflag): for consistency and accuracy.
+	Adjust dependencies.
+
+2000-10-02  Akim Demaille  <akim@epita.fr>
+
+	Use the more standard files `xalloc.h' and `xmalloc.c' instead of
+	Bison's `allocate.c' and `alloc.h'.  This patch was surprisingly
+	difficult and introduced a lot of core dump.  It turns out that
+	Bison used an implementation of `xmalloc' based on `calloc', and
+	at various places it does depend upon the initialization to 0.  I
+	have not tried to isolate the pertinent places, and all the former
+	calls to Bison's `xmalloc' are now using `XCALLOC'.  Someday,
+	someone should address this issue.
+
+	* src/allocate.c, src/alloc.h, m4/bison-decl.m4: Remove.
+	* lib/xmalloc.c, lib/xalloc.h, m4/malloc.m4, m4/realloc.m4: New
+	files.
+	Adjust dependencies.
+	* src/warshall.h: New file.
+	Propagate.
+
+2000-10-02  Akim Demaille  <akim@epita.fr>
+
+	Various anti-`extern in *.c' changes.
+
+	* src/system.h: Include `assert.h'.
+
+2000-10-02  Akim Demaille  <akim@epita.fr>
+
+	* src/state.h (nstates, final_state, first_state, first_shift)
+	(first_reduction): Move their exportation from here...
+	* src/LR0.h: to here.
+	Adjust dependencies.
+	* src/getargs.c (statisticsflag): New variable.
+	Add support for `--statistics'.
+	Adjust dependencies.
+
+	Remove a lot of now useless `extern' statements in most files.
+
+2000-10-02  Akim Demaille  <akim@epita.fr>
+
+	* src/LR0.h: New file.
+	Propagate its use.
+
+2000-10-02  Akim Demaille  <akim@epita.fr>
+
+	* src/print.h: New file.
+	Propagate its use.
+	* src/print.c: Formatting and ordering changes.
+	(verbose, terse): Replace with...
+	(print_results): this new function.
+	Adjust dependencies.
+
+2000-10-02  Akim Demaille  <akim@epita.fr>
+
+	* src/conflicts.c (conflict_report): New function.
+	(conflict_log, verbose_conflict_log): Replace with...
+	(print_conflicts): this function.
+	Adjust dependencies.
+	* src/conflicts.h: New file.
+	Propagate its inclusion.
+
+2000-10-02  Akim Demaille  <akim@epita.fr>
+
+	* src/nullable.h: New file.
+	Propagate its inclusion.
+	* src/nullable.c: Formatting changes.
+
+2000-10-02  Akim Demaille  <akim@epita.fr>
+
+	* src/reduce.h: New file.
+	Propagate its inclusion.
+	* src/reduce.c: Topological sort and other formatting changes.
+	(bool, TRUE, FALSE): Move their definition to...
+	* src/system.h: here.
+
+2000-10-02  Akim Demaille  <akim@epita.fr>
+
+	* src/files.c: Formatting changes.
+	(tryopen, tryclose, openfiles): Rename as...
+	(xfopen, xfclose, open_files): this.
+	(stringappend): static.
+	* src/files.h: Complete the list of exported symbols.
+	Propagate its use.
+
+2000-10-02  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.h: New file.
+	Propagate its use instead of tedious list of `extern' and
+	prototypes.
+	* src/reader.c: Formatting changes, topological sort,
+	s/register//.
+
+2000-10-02  Akim Demaille  <akim@epita.fr>
+
+	* src/lex.h: Prototype `lex.c' exported functions.
+	* src/reader.c: Adjust.
+	* src/lex.c: Formatting changes.
+	(safegetc): Rename as...
+	(xgetc): this.
+
+2000-10-02  Akim Demaille  <akim@epita.fr>
+
+	* src/lalr.h: New file.
+	Propagate its inclusion instead of prototypes and `extern'.
+	* src/lalr.c: Formatting changes, topological sorting etc.
+
+2000-10-02  Akim Demaille  <akim@epita.fr>
+
+	* src/output.c (token_actions): Introduce a temporary array,
+	YYDEFACT, that makes it possible for this function to use
+	output_short_table.
+
+2000-10-02  Akim Demaille  <akim@epita.fr>
+
+	`user_toknums' is output as a `short[]' in `output.c', while it is
+	defined as a `int[]' in `reader.c'.  For consistency with the
+	other output tables, `user_toknums' is now defined as a table of
+	shorts.
+
+	* src/reader.c (user_toknums): Be a short table instead of an int
+	table.
+	Adjust dependencies.
+
+	Factor the short table outputs.
+
+	* src/output.c (output_short_table): New function.
+	* src/output.c (output_gram, output_stos, output_rule_data)
+	(output_base, output_table, output_check):  Use it.
+
+2000-10-02  Akim Demaille  <akim@epita.fr>
+
+	* src/output.c (output): Topological sort of the functions, in
+	order to get rid of the `static' prototypes.
+	No longer use `register'.
+	* src/output.h: New file.
+	Propagate its inclusion in files explicitly prototyping functions
+	from output.c.
+
+2000-09-21  Akim Demaille  <akim@epita.fr>
+
+	* src/atgeneral.m4: Update from Autoconf.
+
+2000-09-21  Akim Demaille  <akim@epita.fr>
+
+	* src/closure.h: New file.
+	* src/closure.c: Formatting changes, topological sort over the
+	functions, use of closure.h.
+	(initialize_closure, finalize_closure):  Rename as...
+	(new_closure, free_closure): these.  Adjust dependencies.
+	* src/LR0.c: Formatting changes, topological sort, use of
+	cloture.h.
+	(initialize_states): Rename as...
+	(new_states): this.
+	* src/Makefile.am (noinst_HEADERS): Adjust.
+
+2000-09-20  Akim Demaille  <akim@epita.fr>
+
+	* src/acconfig.h: Don't protect config.h against multiple
+	inclusion.
+	Don't define PARAMS.
+	* src/system.h: Define PARAMS.
+	Remove some of the ad-hoc CPP magic for DOS, VMS etc.: this is the
+	purpose of config.h.  system.h must not try to fix wrong
+	definitions in config.h.
+
+2000-09-20  Akim Demaille  <akim@epita.fr>
+
+	* src/derives.h: New file.
+	* src/main.c, src/derives.h: Use it.
+	Formatting changes.
+	* src/Makefile.am (noinst_HEADERS): Adjust.
+
+2000-09-20  Akim Demaille  <akim@epita.fr>
+
+	* tests/atgeneral.m4: Update from Autoconf.
+	* tests/calc.m4 (_AT_DATA_CALC_Y, AT_DATA_CALC_Y, _AT_CHECK_CALC)
+	(AT_CHECK_CALC): New macros.
+	Use these macros to test bison with options `', `--raw',
+	`--debug', `--yacc', `--yacc --debug'.
+
+2000-09-19  Akim Demaille  <akim@epita.fr>
+
+	* src/output.c: Formatting changes.
+	* src/machine.h: Remove, leaving its contents in...
+	* src/system.h: here.
+	Include stdio.h.
+	Adjust all dependencies on stdio.h and machine.h.
+	* src/getargs.h: New file.
+	Let all `extern' declarations about getargs.c be replaced with
+	inclusion of `getargs.h'.
+	* src/Makefile.am (noinst_HEADERS): Adjust.
+
+	* tests/calc.m4 (yyin): Be initialized in main, not on the global
+	scope.
+	(yyerror): Returns void, not int.
+	* doc/bison.texinfo: Formatting changes.
+
+2000-09-19  Akim Demaille  <akim@epita.fr>
+
+	* tests/calc.m4 (calc.y): Do not assign to stdin, as it's not
+	portable.
+
+2000-09-18  Akim Demaille  <akim@epita.fr>
+
+	* configure.in: Append WARNING_CFLAGS to CFLAGS.
+	* src/Makefile.am (INCLUDES): Don't.
+	Be ready to fetch headers in lib/.
+
+2000-09-18  Akim Demaille  <akim@epita.fr>
+
+	* doc/bison.texinfo: Update the copyright.
+	ANSIfy and GNUify the examples.
+	Remove the old menu.
+
+2000-09-18  Akim Demaille  <akim@epita.fr>
+
+	First set of tests: use the `calc' example from the documentation.
+
+	* src/bison.s1 (yyparse): Condition the code using `yytname' which
+	is defined only when YYDEBUG is.
+	* m4/atconfig.m4 (AT_CONFIG): Adjust to Autoconf 2.13.
+	* src/files.c (tryopen, tryclose): Formatting changes.
+	Move to the top and be static.
+	* src/reader.c (read_signed_integer): Likewise.
+	* tests/calc.m4: New file.
+	* Makefile.am, suite.m4: Adjust.
+	* m4/atconfig.m4: Set BISON_SIMPLE and BISON_HAIRY.
+
+2000-09-18  Akim Demaille  <akim@epita.fr>
+
+	Add support for an Autotest test suite for Bison.
+
+	* m4/m4.m4, m4/atconfig.m4: New files.
+	* m4/Makefile.am (EXTRA_DIST): Adjust.
+	* tests/suite.m4, tests/Makefile.am, tests/atgeneral.m4: New
+	files.
+	* src/getargs.c: Display a more standard --version message.
+	* src/reader.c (reader): Formatting changes.
+	No longer depend upon VERSION_STRING.
+	* configure.in: No longer use `dnl'.
+	Set up the test suite and the new directory `tests/.
+	(VERSION_STRING): Remove.
+
+2000-04-14  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (copy_comment2): New function, same as former
+	`copy_comment', but outputs into two FILE *.
+	(copy_comment): Use it.
+	(parse_union_decl): Use it.
+	(get_type, parse_start_decl): Use the same `invalid' message.
+	(parse_start_decl, parse_union_decl): Use the same `multiple'
+	message.
+	(parse_union_decl, copy_guard, copy_action): Use the same
+	`unmatched' message.
+	* m4/Makefile.am (EXTRA_DIST): Add `warning.m4'.
+
+2000-03-31  Akim Demaille  <akim@epita.fr>
+
+	* src/files.c (tryopen, tryclose): Move to the top.
+	Be static.
+
+2000-03-31  Akim Demaille  <akim@epita.fr>
+
+	* src/main.c (main): Don't call `done', exit does it.
+
+2000-03-31  Akim Demaille  <akim@epita.fr>
+
+	* allocate.c: s/return (foo)/return foo/.
+	* lalr.c: Likewise.
+	* LR0.c: Likewise.
+	* output.c: Likewise.
+	* reader.c: Likewise.
+	* symtab.c: Likewise.
+	* vmsgetargs.c: Likewise.
+
+2000-03-31  Akim Demaille  <akim@epita.fr>
+
+	Clean up the error reporting functions.
+
+	* src/report.c: New file.
+	* src/report.h: Likewise.
+	* src/Makefile.am: Adjust.
+	* m4/error.m4: New file.
+	* m4/Makefile.am: Adjust.
+	* configure.in (jm_PREREQ_ERROR): Call it.
+	* src/main.c (int_to_string, banner, fatal_banner, warn_banner):
+	Remove.
+	(fatal, fatals): Remove.  All callers use complain.c::fatal.
+	(warn, warni, warns, warnss, warnss): Remove.  All callers use
+	complain.c::complain.
+	(toomany): Remove, use fatal instead.
+	* src/files.c (done): No argument, use complain_message_count.
+	* src/main.c (main): Register `done' to `atexit'.
+
+	* src/getargs.c (usage): More `fputs', less `fprintf'.
+
+2000-03-28  Akim Demaille  <akim@epita.fr>
+
+	* lib/: New directory.
+	* Makefile.am (SUBDIRS): Adjust.
+	* configure.in: Adjust.
+	(LIBOBJS): Although not used yet, AC_SUBST it, otherwise it's
+	useless.
+	* src/alloca.c: Moved to lib/.
+	* src/getopt.c: Likewise.
+	* src/getopt1.c: Likewise.
+	* src/getopt.h: Likewise.
+	* src/ansi2knr.c: Likewise.
+	* src/ansi2knr.1: Likewise.
+	* src/Makefile.am: Adjust.
+	* lib/Makefile.am: New file.
+
+2000-03-28  Akim Demaille  <akim@epita.fr>
+
+	* src/getargs.c (usage): Refresh the help message.
+
+2000-03-17  Akim Demaille  <akim@epita.fr>
+
+	* src/getopt1.c: Updated from textutils 2.0e
+	* src/getopt.c: Likewise.
+	* src/getopt.h: Likewise.
+
+2000-03-17  Akim Demaille  <akim@epita.fr>
+
+	* src/Makefile.am (bison.simple): Fix the awk program: quote only
+	the file name, not the whole `#line LINE FILE'.
+
+2000-03-17  Akim Demaille  <akim@epita.fr>
+
+	On syntax errors, report the token on which we choked.
+
+	* src/bison.s1 (yyparse): In the label yyerrlab, when
+	YYERROR_VERBOSE, add yychar in msg.
+
+2000-03-17  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (copy_at): New function.
+	(copy_guard): Use it.
+	(copy_action): Use it.
+
+2000-03-17  Akim Demaille  <akim@epita.fr>
+
+	Be kind to translators, save some useless translations.
+
+	* src/main.c (banner): New function.
+	(fatal_banner): Use it.
+	(warn_banner): Use it.
+
+2000-03-17  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (copy_definition): Use copy_string and
+	copy_comment.  Removed now unused `match', `ended',
+	`cplus_comment'.
+	(copy_comment, copy_string): Moved, to be visible from
+	copy_definition.
+
+2000-03-17  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (copy_string): Declare `static inline'.  No
+	problems with inline, since it is checked by configure.
+	(copy_comment): Likewise.
+
+2000-03-17  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (packsymbols): Formatting changes.
+
+2000-03-17  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (copy_comment): New function, factored out from:
+	(copy_action): Use it.  Removed now unused `match', `ended',
+	`cplus_comment'.
+	(copy_guard): Likewise.
+
+2000-03-17  Akim Demaille  <akim@epita.fr>
+
+	* src/reader.c (copy_string): New function, factored out from:
+	(copy_action): Use it.
+	(copy_guard): Likewise.
+
+2000-03-17  Akim Demaille  <akim@epita.fr>
+
+	Change the handling of @s so that they behave exactly like $s.
+	There is now a pseudo variable @$ (readble and writable), location
+	of the lhs of the rule (by default ranging from the location of
+	the first symbol of the rhs, to the location of the last symbol,
+	or, if the rhs is empty, YYLLOC).
+
+	* src/bison.s1 [YYLSP_NEEDED] (yyloc): New variable, twin of
+	yyval.
+	(yyparse): When providing a default semantic action, provide a
+	default location action.
+	(after the $): No longer change `*YYLSP', just stack YYLOC the
+	same way you stack YYVAL.
+	* src/reader.c (read_declarations): Use warns.
+	(copy_guard, case '@'): Also recognize `@$', expanded as `YYLOC'.
+	(copy_action, case '@'): Likewise.
+	Use a standard error message, to save useless work from
+	translators.
+
+2000-03-17  Akim Demaille  <akim@epita.fr>
+
+	* src/bison.s1: Formatting and cosmetics changes.
+	* src/reader.c: Likewise.
+	Update the Copyright notice.
+
+2000-03-17  Akim Demaille  <akim@epita.fr>
+
+	* src/bison.s1 (#line): All set to `#line' only, since the
+	Makefile now handles them.
+
+2000-03-16  Akim Demaille  <akim@epita.fr>
+
+	* src/output.c (output_rule_data): Output the documentation of
+	some of the tables.
+	(Copyright notice): Update.
+	Formatting changes.
+
+2000-03-16  Akim Demaille  <akim@epita.fr>
+
+	* src/bison.s1 [!YYDEBUG]: Define yydebug to 0.  This allows to
+	remove most `#if YYDEBUG != 0', since `if (yydebug)' is enough.
+	One `#if YYDEBUG' remains, since it uses variables which are
+	defined only if `YYDEBUG != 0'.
+
+2000-03-16  Akim Demaille  <akim@epita.fr>
+
+	* src/bison.s1 (yyparse): Reorganize the definitions of the stacks
+	and related variables so that the similarities are highlighted.
+
+2000-03-16  Akim Demaille  <akim@epita.fr>
+
+	* src/bison.s1: Properly indent CPP directives.
+
+2000-03-16  Akim Demaille  <akim@epita.fr>
+
+	* src/bison.s1: Properly indent the `alloca' CPP section.
+
+2000-03-16  Akim Demaille  <akim@epita.fr>
+
+	Do not hard code values of directories in `configure.in'.
+	Update the `configure' tool chain.
+
+	* configure.in (XPFILE, XPFILE1, LOCALEDIR): Remove, handled by
+	src/makefile.am.
+	(VERSION_STRING): Use the third arg of AC_DEFINE_UNQUOTED.
+	(AC_OUTPUT): Add m4/Makefile.
+	Bump to bison 1.28a, 1.29 has never been released.
+	* acconfig.h (XPFILE, XPFILE1, LOCALEDIR): Remove, since they are
+	handled via src/Makefile.am.
+	(VERSION_STRING, PROTOTYPES, ENABLE_NLS, HAVE_CATGETS,
+	HAVE_GETTEXT, HAVE_LC_MESSAGES, HAVE_STPCPY): Remove, handled by
+	autoheader.
+	* Makefile.am (SUBDIRS): Add m4.
+	(ACLOCAL_AM_FLAGS): New variable.
+	(AUTOMAKE_OPTIONS): Add check-news.
+	* src/Makefile.am (bison.simple): Use awk to replace #line lines with
+	the proper line number and file name.
+	(DEFS): Propagate the location of bison library files and of the
+	locale files.
+	(INCLUDES): Added `-I ..' so that one can compile with srcdir !=
+	builddir.
+	* acinclude.m4: Remove, replaced by the directory m4.
+	* m4/Makefile.am (EXTRA_DIST): New variable.
+	* m4/gettext.m4: New file, from the fileutils.
+	* m4/lcmessage.m4: Likewise
+	* m4/progtest.m4: Likewise.
+	* m4/bison-decl.m4: New file, extracted from former acinclude.m4.
+
+2000-03-10  Akim Demaille  <akim@epita.fr>
+
+	* src/closure.c:
+	Formatting changes of various comments.
+	Respect the GNU coding standards at various places.
+	Don't use `_()' when no translation is needed.
+
+1999-12-13  Jesse Thilo  <jthilo@gnu.org>
+
+	* src/files.c:
+	OS/2 honors TMPDIR environment variable.
+
+1999-12-13  Jesse Thilo  <jthilo@gnu.org>
+
+	* doc/bison.texinfo: Tweaked spelling and grammar.
+	Updated ISBN.
+	Removed reference to price of printed copy.
+	Mention BISON_SIMPLE and BISON_HAIRY.
+
+1999-12-13  Jesse Thilo  <jthilo@gnu.org>
+
+	* configure.in, NEWS:
+	Bison 1.29 released.
+
+1999-10-27  Jesse Thilo  <jthilo@gnu.org>
+
+	* doc/.cvsignore, doc/Makefile.am, doc/refcard.tex:
+	Added reference card.
+
+1999-07-26  Jesse Thilo  <jthilo@gnu.org>
+
+	* po/ru.po: Added Russian translation.
+
+1999-07-26  Jesse Thilo  <jthilo@gnu.org>
+
+	* configure.in: Added Russian translation.
+
+1999-07-06  Jesse Thilo  <jthilo@gnu.org>
+
+	* configure.in, NEWS, README:
+	Released version 1.28.
+
+1999-06-14  Jesse Thilo  <jthilo@gnu.org>
+
+	* src/system.h:
+	Squashed redefinition warning on some systems.
+
+	* src/getargs.c, src/Makefile.am, src/reader.c, src/version.c:
+	Have configure build version string instead of relying on ANSI string
+	concatentation.
+
+1999-06-14  Jesse Thilo  <jthilo@gnu.org>
+
+	* po/POTFILES.in: Got rid of version.c.
+
+1999-06-14  Jesse Thilo  <jthilo@gnu.org>
+
+	* acconfig.h, configure.in:
+	Have configure build version string instead of relying on ANSI string
+	concatentation.
+
+1999-06-08  Jesse Thilo  <jthilo@gnu.org>
+
+	* doc/bison.1:
+	Dropped mention of `+' for long-named options.
+
+1999-05-30  Jesse Thilo  <jthilo@gnu.org>
+
+	* src/files.c: Added <unistd.h> for unlink().
+
+	* src/Makefile.am, src/system.h:
+	I18n fixes.
+
+1999-05-30  Jesse Thilo  <jthilo@gnu.org>
+
+	* README: Added a FAQ list.
+
+	* configure.in, acconfig.h:
+	I18n fixes.
+
+1999-05-30  Jesse Thilo  <jthilo@gnu.org>
+
+	* doc/FAQ, doc/Makefile.am:
+	Added a FAQ list.
+
+1999-05-19  Jesse Thilo  <jthilo@gnu.org>
+
+	* src/alloc.h, src/symtab.h, src/version.c:
+	Protected inclusion of "config.h" with HAVE_CONFIG_H.
+
+1999-04-18  Jesse Thilo  <jthilo@gnu.org>
+
+	* src/.cvsignore, src/Makefile.am:
+	Reorganized: sources in `src', documentation in `doc'.
+
+	* src/lex.c (literalchar):
+	fixed the code for escaping double quotes (thanks
+	Jonathan Czisny.)
+
+1999-04-18  Jesse Thilo  <jthilo@gnu.org>
+
+	* po/de.po, po/es.po, po/fr.po, po/nl.po, po/POTFILES.in:
+	Adjusted paths to reflect directory reorganization.
+
+1999-04-18  Jesse Thilo  <jthilo@gnu.org>
+
+	* doc/.cvsignore, doc/Makefile.am:
+	Reorganized: sources in `src', documentation in `doc'.
+
+1999-04-18  Jesse Thilo  <jthilo@gnu.org>
+
+	* configure.in:
+	Updated AC_INIT file to reflect directory reorganization.
+
+	* configure.in, .cvsignore, Makefile.am, POTFILES.in:
+	Reorganized: sources in `src', documentation in `doc'.
+
+1999-04-13  Jesse Thilo  <jthilo@gnu.org>
+
+	* src/allocate.c:
+	Don't declare calloc() and realloc() if not necessary.
+
+1999-04-13  Jesse Thilo  <jthilo@gnu.org>
+
+	* configure.in, acconfig.h, acinclude.m4:
+	Don't declare calloc() and realloc() if not necessary.
+
+1999-03-23  Jesse Thilo  <jthilo@gnu.org>
+
+	* po/.cvsignore: Added i18n support.
+
+1999-03-23  Jesse Thilo  <jthilo@gnu.org>
+
+	* acconfig.h, configure.in, Makefile.am:
+	Added i18n support.
+
+1999-03-22  Jesse Thilo  <jthilo@gnu.org>
+
+	* src/bison.s1: Fixed #line numbers.
+
+1999-03-15  Jesse Thilo  <jthilo@gnu.org>
+
+	* po/es.po, po/fr.po, po/nl.po, po/de.po:
+	Added PO files from Translation Project.
+
+1999-03-03  Jesse Thilo  <jthilo@gnu.org>
+
+	* Makefile.am:
+	Added support for non-ANSI compilers (ansi2knr).
+
+1999-02-16  Jesse Thilo  <jthilo@gnu.org>
+
+	* configure.in: Bumped version number to 1.27.
+
+	* Makefile.am:
+	Added `bison.simple' to list of files removed by `make distclean'.
+
+1999-02-12  Jesse Thilo  <jthilo@gnu.org>
+
+	* src/files.c, src/files.h:
+	Defined locations of parser files in config.h instead of Makefile.
+
+1999-02-12  Jesse Thilo  <jthilo@gnu.org>
+
+	* acconfig.h, acinclude.m4, configure.in, Makefile.am:
+	Defined locations of parser files in config.h instead of Makefile.
+
+1999-02-09  Jesse Thilo  <jthilo@gnu.org>
+
+	* Makefile.am:
+	Removed inappropriate use of $< macro.
+
+1999-02-05  Jesse Thilo  <jthilo@gnu.org>
+
+	* po/Makefile.in.in, po/POTFILES.in:
+	Add `po' directory skeleton.
+
+1999-01-27  Jesse Thilo  <jthilo@gnu.org>
+
+	* README: Document help-bison list.
+
+	* configure.in: Add check for mkstemp().
+
+1999-01-20  Jesse Thilo  <jthilo@gnu.org>
+
+	* src/conflicts.c, src/LR0.c, src/output.c, src/reader.c:
+	Hush a few compiler warnings.
+
+	* src/files.c:
+	Add tryclose(), which verifies that fclose was successful.
+	Hush a couple of compiler warnings.
+
+1999-01-20  Jesse Thilo  <jthilo@gnu.org>
+
+	* Makefile.am, OChangeLog:
+	ChangeLog is now automatically generated.  Include the old version as
+	OChangeLog.
+
+1999-01-14  Jesse Thilo  <jthilo@gnu.org>
+
+	* src/gram.h, src/lalr.c, src/lex.c, src/lex.h, src/machine.h, src/main.c, src/nullable.c, src/output.c, src/print.c, src/reader.c, src/reduce.c, src/state.h, src/symtab.c, src/symtab.h, src/types.h, src/vmsgetargs.c, src/warshall.c, src/allocate.c, src/alloc.h, src/bison.s1, src/closure.c, src/conflicts.c, src/derives.c, src/files.c, src/files.h, src/getargs.c, src/gram.c, src/LR0.c:
+	Update FSF address.
+
+1999-01-14  Jesse Thilo  <jthilo@gnu.org>
+
+	* doc/bison.texinfo: Fix formatting glitch.
+
+	* doc/bison.texinfo: Update FSF address.
+
+1999-01-14  Jesse Thilo  <jthilo@gnu.org>
+
+	* acconfig.h: Update FSF address.
+
+1999-01-08  Jesse Thilo  <jthilo@gnu.org>
+
+	* src/system.h:
+	Don't define PACKAGE here, since config.h defines it.
+
+1998-12-30  Jesse Thilo  <jthilo@gnu.org>
+
+	* src/reader.c: Update copyright date.
+
+	* src/main.c:
+	Ditch sprintf to statically-sized buffers in fatal/warn functions in
+	favor of output directly to stderr (avoids buffer overruns).
+
+	* src/reader.c: Some checks for premature EOF.
+
+	* src/allocate.c, src/alloc.h, src/closure.c, src/conflicts.c, src/derives.c, src/getargs.c, src/gram.c, src/lalr.c, src/lex.c, src/LR0.c, src/main.c, src/nullable.c, src/output.c, src/print.c, src/reduce.c, src/symtab.c, src/symtab.h, src/warshall.c:
+	Use prototypes if the compiler understands them.
+
+	* src/files.c: Honor TMPDIR on Unix hosts.
+	Use prototypes if the compiler understands them.
+
+	* src/reader.c:
+	Fix a couple of buffer overrun bugs.
+	Use prototypes if the compiler understands them.
+
+	* src/system.h: Include unistd.h and ctype.h.
+	Use #ifdef instead of #if for NLS symbols.
+
+1998-12-30  Jesse Thilo  <jthilo@gnu.org>
+
+	* doc/bison.texinfo:
+	Delete comment "consider using @set for edition number, etc..." since
+	we now are doing so.
+
+1998-12-30  Jesse Thilo  <jthilo@gnu.org>
+
+	* configure.in:
+	Use prototypes if the compiler understands them.
+
+	* NEWS: Document 1.26 highlights.
+
+	* Makefile.am: Require Automake 1.3 or later.
+
+	* acconfig.h:
+	Use prototypes if the compiler understands them.
+
+1998-12-29  Jesse Thilo  <jthilo@gnu.org>
+
+	* src/version.c:
+	Use VERSION symbol from automake for version number.
+
+1998-12-29  Jesse Thilo  <jthilo@gnu.org>
+
+	* acconfig.h, configure.in, version.cin:
+	Use VERSION symbol from automake for version number.
+
+1998-11-28  Jesse Thilo  <jthilo@gnu.org>
+
+	* Makefile.am:
+	Distribute original version of simple parser (bison.s1), not built
+	version (bison.simple).
+
+1998-11-28  Jesse Thilo  <jthilo@gnu.org>
+
+	* doc/bison.texinfo: Add info dir entry.
+
+	* doc/bison.texinfo:
+	Let automake put version number into documentation.
+
+1998-11-26  Jesse Thilo  <jthilo@gnu.org>
+
+	* src/bison.cld, src/build.com, src/vmshlp.mar:
+	Add non-RCS files from /gd/gnu/bison.
+
+1998-11-26  Jesse Thilo  <jthilo@gnu.org>
+
+	* doc/bison.1:
+	Document the BISON_HAIRY and BISON_SIMPLE variables.
+
+1998-11-25  Jesse Thilo  <jthilo@gnu.org>
+
+	* src/version.c: Build version.c automatically.
+
+	* src/reader.c:
+	Fix token numbering (used to start at 258, not 257).
+
+	* src/system.h: Include config.h.
+
+	* src/getargs.c: Update bug report address.
+
+	* src/alloca.c, src/getopt1.c, src/getopt.c, src/getopt.h:
+	Get latest copies of alloca.c, getopt.c, getopt.h, getopt1.c from gnu.org.
+
+1998-11-25  Jesse Thilo  <jthilo@gnu.org>
+
+	* Makefile.am:
+	Rename bison.simple to bison.s1 (bison.simple is then built from bison.s1).
+
+	* configure.in, version.cin:
+	Build version.c automatically.
+
+	* AUTHORS: Add AUTHORS file.
+
+	* README: Update bug report address.
+
+	* bison.simple:
+	Rename bison.simple to bison.s1 (bison.simple is then built from bison.s1).
+
+	* configure.in, Makefile.am, Makefile.in, stamp-h.in:
+	Add automake stuff.
+
+1998-11-25  Jesse Thilo  <jthilo@gnu.org>
+
+	* doc/bison.texinfo: Clean up some formatting.
+
+1998-05-05  Richard Stallman  <rms@gnu.org>
+
+	* doc/bison.texinfo:
+	Explain better why to make a pure parser.
+
+1998-01-05  Richard Stallman  <rms@gnu.org>
+
+	* src/files.c (openfiles):
+	[_WIN32 && !__CYGWIN32__] Use TEMP or Temp to
+	find a temporary directory, if possible.  Do not unlink files while
+	they are open.
+
+1997-08-25  Richard Stallman  <rms@gnu.org>
+
+	* src/reader.c (stack_offset;):
+	Change some warni to warns.
+
+	* src/lex.c (literalchar): Use warns, not warni.
+
+1997-06-28  Richard Stallman  <rms@gnu.org>
+
+	* src/bison.s1: Add a Bison version comment.
+
+	* src/main.c (fatal, warn, berror):
+	Use program_name.
+
+1997-06-28  Richard Stallman  <rms@gnu.org>
+
+	* Makefile.in (bison_version): New variable.
+	(dist): Use that variable.
+	(bison.s1): Substitute the Bison version into bison.simple.
+
+	* bison.simple: Add a Bison version comment.
+
+1997-06-18  Richard Stallman  <rms@gnu.org>
+
+	* src/main.c (fatal, warn, berror):
+	Make error messages standard.
+	(toomany): Improve error message text.
+
+	* src/LR0.c, src/closure.c, src/conflicts.c, src/derives.c, src/files.c, src/lalr.c, src/lex.c, src/nullable.c, src/output.c, src/print.c, src/reader.c, src/reduce.c, src/symtab.c:
+	new.h renamed to alloc.h.
+
+1997-06-18  Richard Stallman  <rms@gnu.org>
+
+	* Makefile.in: new.h renamed to alloc.h.
+
+1997-05-24  Richard Stallman  <rms@gnu.org>
+
+	* src/lex.c (literalchar):
+	Fix the code for escaping \, " and '.
+
+	(lex): Avoid trouble when there are many chars
+	to discard in a char literal with just several chars in it.
+
+1997-05-17  Richard Stallman  <rms@gnu.org>
+
+	* src/bison.s1:
+	Use malloc, if using alloca is troublesome.
+	(YYSTACK_USE_ALLOCA): New flag macro.
+	Define it for some systems and compilers.
+	(YYSTACK_ALLOC): New macro.
+	(yyparse): Use YYSTACK_ALLOC to allocate stack.
+	If it was malloc'd, free it.
+
+1997-05-17  Richard Stallman  <rms@gnu.org>
+
+	* bison.simple:
+	Use malloc, if using alloca is troublesome.
+	(YYSTACK_USE_ALLOCA): New flag macro.
+	Define it for some systems and compilers.
+	(YYSTACK_ALLOC): New macro.
+	(yyparse): Use YYSTACK_ALLOC to allocate stack.
+	If it was malloc'd, free it.
+
+1997-04-23  Richard Stallman  <rms@gnu.org>
+
+	* src/bison.s1:
+	(alloca) [__hpux]: Always define as __builtin_alloca.
+
+1997-04-23  Richard Stallman  <rms@gnu.org>
+
+	* bison.simple:
+	(alloca) [__hpux]: Always define as __builtin_alloca.
+
+1997-04-22  Richard Stallman  <rms@gnu.org>
+
+	* src/bison.s1:
+	[__hpux]: Include alloca.h (right for HPUX 10)
+	instead of declaring alloca (right for HPUX 9).
+
+	* src/bison.s1 (__yy_memcpy):
+	Declare arg `count' as unsigned int.
+	(yyparse): Cast third arg to __yy_memcpy to unsigned int.
+
+1997-04-22  Richard Stallman  <rms@gnu.org>
+
+	* bison.simple:
+	[__hpux]: Include alloca.h (right for HPUX 10)
+	instead of declaring alloca (right for HPUX 9).
+
+	* bison.simple (__yy_memcpy):
+	Declare arg `count' as unsigned int.
+	(yyparse): Cast third arg to __yy_memcpy to unsigned int.
+
+1997-01-03  Richard Stallman  <rms@gnu.org>
+
+	* src/allocate.c: [__STDC__ or _MSC_VER]:
+	Declare calloc and realloc to return void *.
+
+1997-01-02  Richard Stallman  <rms@gnu.org>
+
+	* src/system.h:
+	[_MSC_VER]: Include stdlib.h and process.h.
+	[_MSC_VER] (getpid): Define as macro--translate it to _getpid.
+
+	* src/main.c (main): Return FAILURE as a value.
+	(printable_version): Declare arg as int, not char.
+
+1997-01-02  Richard Stallman  <rms@gnu.org>
+
+	* Makefile.in (dist):
+	Explicitly check for symlinks, and copy them.
+
+1996-12-19  Richard Stallman  <rms@gnu.org>
+
+	* src/files.c:
+	[_MSC_VER] (XPFILE, XPFILE1): Define, if not already defined.
+
+1996-12-18  Paul Eggert  <eggert@gnu.org>
+
+	* src/bison.s1 (yyparse):
+	If __GNUC__ and YYPARSE_PARAM are both defined,
+	declare yyparse to have a void * argument.
+
+1996-12-18  Paul Eggert  <eggert@gnu.org>
+
+	* bison.simple (yyparse):
+	If __GNUC__ and YYPARSE_PARAM are both defined,
+	declare yyparse to have a void * argument.
+
+1996-12-17  Richard Stallman  <rms@gnu.org>
+
+	* src/reduce.c (nbits): Add some casts.
+
+1996-08-12  Richard Stallman  <rms@gnu.org>
+
+	* src/bison.s1: Test _MSDOS as well as _MSDOS_.
+
+1996-08-12  Richard Stallman  <rms@gnu.org>
+
+	* bison.simple: Test _MSDOS as well as _MSDOS_.
+
+1996-07-31  Richard Stallman  <rms@gnu.org>
+
+	* src/bison.s1:
+	[__sun && __i386]: Include alloca.h.
+
+1996-07-31  Richard Stallman  <rms@gnu.org>
+
+	* bison.simple:
+	[__sun && __i386]: Include alloca.h.
+
+1996-07-30  Richard Stallman  <rms@gnu.org>
+
+	* src/bison.s1: Comment change.
+
+	* src/bison.s1: Test _MSDOS_, not MSDOS.
+
+1996-07-30  Richard Stallman  <rms@gnu.org>
+
+	* bison.simple: Comment change.
+
+	* bison.simple: Test _MSDOS_, not MSDOS.
+
+1996-06-01  Richard Stallman  <rms@gnu.org>
+
+	* src/reduce.c, src/reader.c, src/print.c, src/output.c, src/nullable.c, src/lex.c, src/lalr.c, src/getargs.c, src/derives.c, src/conflicts.c, src/closure.c, src/allocate.c:
+	Insert `_' macro around many string constants.
+
+	* src/main.c:
+	Insert `_' macro around many string constants.
+
+	(main): Call setlocale, bindtextdomain and textdomain.
+
+	* src/system.h: [HAVE_LOCALE_H]: Include locale.h.
+	[! HAVE_LOCALE_H] (setlocale): Define as no-op.
+	[ENABLE_NLS]: Include libintl.h.
+	[ENABLE_NLS] (gettext): Define.
+	[! ENABLE_NLS] (bintextdomain, textdomain, _): Consolation definitions.
+	(N_, PACKAGE, LOCALEDIR): New macros.
+
+1996-06-01  Richard Stallman  <rms@gnu.org>
+
+	* POTFILES.in: New file.
+
+	* Makefile.in (allocate.o):
+	Define target explicitly.
+
+	* Makefile.in (CFLAGS): Set to @CFLAGS@.
+	(LDFLAGS): Set to @LDFLAGS@.
+	(configure): Run autoconf only if preceding `cd' succeeds.
+	(bison.s1): Redirect output to temporary file then move the
+	temporary to the target, rather than redirecting directly to bison.s1.
+	(clean): Remove config.status and config.log.
+	(distclean): Don't remove config.status here.
+
+1996-05-12  Richard Stallman  <rms@gnu.org>
+
+	* src/bison.s1:
+	(__yy_memcpy) [__cplusplus]: Reorder declarations of variables f and t.
+
+1996-05-12  Richard Stallman  <rms@gnu.org>
+
+	* bison.simple:
+	(__yy_memcpy) [__cplusplus]: Reorder declarations of variables f and t.
+
+1996-05-11  Richard Stallman  <rms@gnu.org>
+
+	* src/bison.s1 (__yy_memcpy):
+	Really reorder the args, as was supposedly done on Feb 14 1995.
+	(yyparse): Calls changed accordingly.
+
+1996-05-11  Richard Stallman  <rms@gnu.org>
+
+	* Makefile.in (dist): Don't use $(srcdir).
+
+	* bison.simple (__yy_memcpy):
+	Really reorder the args, as was supposedly done on Feb 14 1995.
+	(yyparse): Calls changed accordingly.
+
+1996-01-27  Richard Stallman  <rms@gnu.org>
+
+	* src/output.c (output_rule_data):
+	Test YYERROR_VERBOSE in the conditional
+	around the definition of ttyname.
+
+1995-12-29  Richard Stallman  <rms@gnu.org>
+
+	* src/bison.s1:
+	Fix line numbers in #line commands.
+
+1995-12-29  Richard Stallman  <rms@gnu.org>
+
+	* bison.simple:
+	Fix line numbers in #line commands.
+
+1995-12-27  Richard Stallman  <rms@gnu.org>
+
+	* src/bison.s1 (YYPARSE_PARAM_DECL):
+	In C++, make it always null.
+	(YYPARSE_PARAM_ARG): New macro.
+	(yyparse): Use YYPARSE_PARAM_ARG.
+
+1995-12-27  Richard Stallman  <rms@gnu.org>
+
+	* bison.simple (YYPARSE_PARAM_DECL):
+	In C++, make it always null.
+	(YYPARSE_PARAM_ARG): New macro.
+	(yyparse): Use YYPARSE_PARAM_ARG.
+
+1995-11-29  Richard Stallman  <rms@gnu.org>
+
+	* doc/bison.texinfo:
+	Describe literal string tokens, %raw, %no_lines, %token_table.
+
+1995-11-29  Daniel Hagerty  <hag@gnu.org>
+
+	* doc/bison.texinfo: Fixed update date
+
+1995-10-16  Richard Stallman  <rms@gnu.org>
+
+	* src/version.c: Version 1.25.
+
+1995-10-16  Richard Stallman  <rms@gnu.org>
+
+	* NEWS: *** empty log message ***
+
+1995-10-16  Richard Stallman  <rms@gnu.org>
+
+	* doc/bison.1, doc/bison.rnh:
+	Add new options.
+
+1995-10-15  Richard Stallman  <rms@gnu.org>
+
+	* src/vmsgetargs.c, src/getargs.c:
+	Added -n, -k, and -raw switches.
+	(noparserflag, toknumflag, rawtoknumflag): New variables.
+
+	* src/symtab.h (SALIAS):
+	New #define for adding aliases to %token.
+	(struct bucket): Added `alias' field.
+
+	* src/reduce.c (reduce_grammar):
+	Revise error message.
+	(print_notices): Remove final `.' from error message.
+
+	* src/reader.c (reader_output_yylsp):
+	New function.
+	(readgram): Use `#if 0' around code that accepted %command
+	inside grammar rules:  The documentation doesn't allow it,
+	and it will fail since the %command processors scan for the next %.
+	(parse_token_decl):  Extended the %token
+	declaration to allow a multi-character symbol as an alias.
+	(parse_thong_decl): New function.
+	(read_declarations): Added %thong declarations.
+	(read_declarations): Handle NOOP to deal with allowing
+	% declarations as another means to specify the flags.
+	(readgram): Allow %prec prior to semantics embedded in a rule.
+	(skip_to_char, read_declarations, copy_definition)
+	(parse_token_decl, parse_start_decl, parse_type_decl)
+	(parse_assoc_decl, parse_union_decl, parse_expect_decl)
+	(get_type_name, copy_guard, copy_action, readgram)
+	(get_type, packsymbols):  Revised most error messages.
+	Changed `fatal' to `warnxxx' to avoid aborting for error.
+	Revised and use multiple warnxxx functions to avoid using VARARGS1.
+	(read_declarations): Improve the error message for
+	an invalid character.  Do not abort.
+	(read_declarations, copy_guard, copy_action): Use
+	printable_version to avoid unprintable characters in printed output.
+	(parse_expect_decl): Error if argument to %expect exceeds 10 digits.
+	(parse_token_decl, parse_assoc_decl, parse_type_decl, get_type):
+	Allow the type of a non-terminal can be given
+	more than once, as long as all specifications give the same type.
+
+	* src/output.c:
+	(output_headers, output_trailers, output, output_gram)
+	(output_rule_data): Implement noparserflag variable.
+	Implement toknumflag variable.
+	(output): Call reader_output_yylsp to output LTYPESTR.
+
+	* src/main.c (main):
+	 If reader sees an error, don't process the grammar.
+	(fatals): Updated to not use VARARGS1.
+	(printable_version, int_to_string, warn, warni, warns, warnss)
+	(warnsss): New error reporting functions.  Avoid abort for error.
+
+	* src/lex.h:
+	Added THONG and NOOP for alias processing.
+	Added SETOPT for the new code that allows setting options with %flags.
+
+	* src/lex.c:
+	Include getopt.h.  Add some extern decls.
+	(safegetc): New function to deal with EOF gracefully.
+	(literalchar); new function to deal with reading \ escapes.
+	(lex): Use literalchar.
+	(lex): Implemented "..." tokens.
+	(literalchar, lex, parse_percent_token): Made tokenbuffer
+	always contain the token.  This includes growing the token
+	buffer while reading an integer.
+	(parse_percent_token): Replaced if-else statement with percent_table.
+	(parse_percent_token): Added % declarations as another
+	way to specify the flags -n, -l, and -r.  Also added hooks for
+	-d, -k, -y, -v, -t, -p, -b, -o, but implementation requires
+	major changes to files.c.
+	(lex) Retain in the incoming stream a character following
+	an incorrect '/'.
+	(skip_white_space, lex):  Revised most error messages
+	and changed fatal to warn to avoid aborting.
+	(percent_table):  Added %thong declarations.
+
+	* src/gram.h: Comment changes.
+
+	* src/files.c (openfiles, open_extra_files, done):
+	 Add faction flag
+	and actfile file.  Handle noparserflag.  Both for -n switch.
+
+	* src/conflicts.c (resolve_sr_conflict):
+	Remove use of alloca.
+
+1995-06-01  Jim Meyering  <meyering@gnu.org>
+
+	* doc/bison.texinfo: *** empty log message ***
+
+1995-05-06  Richard Stallman  <rms@gnu.org>
+
+	* src/bison.s1: Comment change.
+
+1995-05-06  Richard Stallman  <rms@gnu.org>
+
+	* bison.simple: Comment change.
+
+1995-05-03  Richard Stallman  <rms@gnu.org>
+
+	* src/version.c: Version now 1.24.
+
+	* src/bison.s1: Change distribution terms.
+
+	* src/version.c: Version now 1.23.
+
+1995-05-03  Richard Stallman  <rms@gnu.org>
+
+	* doc/bison.texinfo:
+	Rewrite "Conditions for Using Bison".
+	Update version to 1.24.
+
+1995-05-03  Richard Stallman  <rms@gnu.org>
+
+	* bison.simple: Change distribution terms.
+
+1995-02-23  Richard Stallman  <rms@gnu.org>
+
+	* src/files.c: Test __VMS_POSIX as well as VMS.
+
+1995-02-14  Jim Meyering  <meyering@gnu.org>
+
+	* src/bison.s1 (__yy_memcpy):
+	Renamed from __yy_bcopy to avoid
+	confusion.  Reverse FROM and TO arguments to be consistent with
+	those of memcpy.
+
+1995-02-14  Jim Meyering  <meyering@gnu.org>
+
+	* bison.simple (__yy_memcpy):
+	Renamed from __yy_bcopy to avoid
+	confusion.  Reverse FROM and TO arguments to be consistent with
+	those of memcpy.
+
+1994-11-10  David J. MacKenzie  <djm@gnu.org>
+
+	* NEWS: reformat
+
+	* NEWS: New file.
+
+	* Makefile.in (DISTFILES): Include NEWS.
+
+	* Makefile.in (DISTFILES):
+	Include install-sh, not install.sh.
+
+	* configure.in: Update to Autoconf v2 macro names.
+
+1994-10-05  David J. MacKenzie  <djm@gnu.org>
+
+	* Makefile.in: fix typo
+
+	* Makefile.in (prefix, exec_prefix):
+	Let configure set them.
+
+1994-09-28  David J. MacKenzie  <djm@gnu.org>
+
+	* Makefile.in: Set datadir to $(prefix)/share.
+
+1994-09-15  Richard Stallman  <rms@gnu.org>
+
+	* src/bison.s1:
+	Update copyright notice and GPL version.
+
+1994-09-15  Richard Stallman  <rms@gnu.org>
+
+	* bison.simple:
+	Update copyright notice and GPL version.
+
+1994-07-12  Richard Stallman  <rms@gnu.org>
+
+	* src/reduce.c, src/reader.c:
+	entered into RCS
+
+1994-05-05  David J. MacKenzie  <djm@gnu.org>
+
+	* Makefile.in: entered into RCS
+
+1994-03-26  Richard Stallman  <rms@gnu.org>
+
+	* src/bison.s1: entered into RCS
+
+1994-03-26  Richard Stallman  <rms@gnu.org>
+
+	* bison.simple: entered into RCS
+
+1994-03-25  Richard Stallman  <rms@gnu.org>
+
+	* src/main.c: entered into RCS
+
+1994-03-24  Richard Stallman  <rms@gnu.org>
+
+	* src/conflicts.c: entered into RCS
+
+1994-01-02  Richard Stallman  <rms@gnu.org>
+
+	* Makefile.in: *** empty log message ***
+
+1993-11-21  Richard Stallman  <rms@gnu.org>
+
+	* src/bison.s1: *** empty log message ***
+
+1993-11-21  Richard Stallman  <rms@gnu.org>
+
+	* doc/bison.texinfo: entered into RCS
+
+	* doc/bison.texinfo: *** empty log message ***
+
+1993-11-21  Richard Stallman  <rms@gnu.org>
+
+	* bison.simple: *** empty log message ***
+
+1993-10-25  David J. MacKenzie  <djm@gnu.org>
+
+	* doc/bison.texinfo: *** empty log message ***
+
+1993-10-19  Richard Stallman  <rms@gnu.org>
+
+	* src/bison.s1: *** empty log message ***
+
+1993-10-19  Richard Stallman  <rms@gnu.org>
+
+	* bison.simple: *** empty log message ***
+
+1993-10-14  Richard Stallman  <rms@gnu.org>
+
+	* src/bison.s1: *** empty log message ***
+
+1993-10-14  Richard Stallman  <rms@gnu.org>
+
+	* bison.simple: *** empty log message ***
+
+1993-09-14  David J. MacKenzie  <djm@gnu.org>
+
+	* doc/bison.texinfo: *** empty log message ***
+
+1993-09-13  Noah Friedman  <friedman@gnu.org>
+
+	* Makefile.in: *** empty log message ***
+
+1993-09-10  Richard Stallman  <rms@gnu.org>
+
+	* src/conflicts.c: *** empty log message ***
+
+	* src/system.h: entered into RCS
+
+1993-09-10  Richard Stallman  <rms@gnu.org>
+
+	* doc/bison.1: entered into RCS
+
+1993-09-06  Noah Friedman  <friedman@gnu.org>
+
+	* src/version.c: entered into RCS
+
+1993-09-06  Noah Friedman  <friedman@gnu.org>
+
+	* Makefile.in: *** empty log message ***
+
+1993-07-30  David J. MacKenzie  <djm@gnu.org>
+
+	* Makefile.in: *** empty log message ***
+
+1993-07-24  Richard Stallman  <rms@gnu.org>
+
+	* src/bison.s1: *** empty log message ***
+
+1993-07-24  Richard Stallman  <rms@gnu.org>
+
+	* bison.simple: *** empty log message ***
+
+1993-07-08  David J. MacKenzie  <djm@gnu.org>
+
+	* Makefile.in: *** empty log message ***
+
+1993-07-04  Richard Stallman  <rms@gnu.org>
+
+	* src/bison.s1: *** empty log message ***
+
+1993-07-04  Richard Stallman  <rms@gnu.org>
+
+	* bison.simple: *** empty log message ***
+
+1993-06-26  David J. MacKenzie  <djm@gnu.org>
+
+	* src/getargs.c: entered into RCS
+
+1993-06-26  David J. MacKenzie  <djm@gnu.org>
+
+	* doc/bison.texinfo: *** empty log message ***
+
+	* doc/bison.1: New file.
+
+1993-06-25  Richard Stallman  <rms@gnu.org>
+
+	* src/getargs.c: New file.
+
+1993-06-16  Richard Stallman  <rms@gnu.org>
+
+	* src/bison.s1: *** empty log message ***
+
+1993-06-16  Richard Stallman  <rms@gnu.org>
+
+	* bison.simple: *** empty log message ***
+
+1993-06-03  Richard Stallman  <rms@gnu.org>
+
+	* src/bison.s1: New file.
+
+1993-06-03  Richard Stallman  <rms@gnu.org>
+
+	* doc/bison.texinfo: *** empty log message ***
+
+1993-06-03  Richard Stallman  <rms@gnu.org>
+
+	* bison.simple: New file.
+
+1993-05-19  Richard Stallman  <rms@gnu.org>
+
+	* doc/bison.texinfo: New file.
+
+1993-05-07  Noah Friedman  <friedman@gnu.org>
+
+	* Makefile.in: *** empty log message ***
+
+1993-04-28  Noah Friedman  <friedman@gnu.org>
+
+	* src/reader.c: *** empty log message ***
+
+1993-04-23  Noah Friedman  <friedman@gnu.org>
+
+	* src/alloc.h: entered into RCS
+
+1993-04-20  David J. MacKenzie  <djm@gnu.org>
+
+	* src/version.c: *** empty log message ***
+
+	* src/files.c, src/allocate.c:
+	entered into RCS
+
+	* src/reader.c: *** empty log message ***
+
+	* src/lex.c: entered into RCS
+
+	* src/conflicts.c: New file.
+
+	* src/symtab.c: entered into RCS
+
+	* src/alloc.h: New file.
+
+	* src/LR0.c: entered into RCS
+
+1993-04-18  Noah Friedman  <friedman@gnu.org>
+
+	* src/reader.c: New file.
+
+	* src/version.c: *** empty log message ***
+
+1993-04-18  Noah Friedman  <friedman@gnu.org>
+
+	* Makefile.in: *** empty log message ***
+
+1993-04-17  Noah Friedman  <friedman@gnu.org>
+
+	* Makefile.in: *** empty log message ***
+
+1993-04-15  Richard Stallman  <rms@gnu.org>
+
+	* src/main.c, src/files.c:
+	New file.
+
+1993-04-15  Noah Friedman  <friedman@gnu.org>
+
+	* configure.in: entered into RCS
+
+	* configure.in: *** empty log message ***
+
+	* configure.in: New file.
+
+1993-04-14  Richard Stallman  <rms@gnu.org>
+
+	* Makefile.in: New file.
+
+1993-04-13  Richard Stallman  <rms@gnu.org>
+
+	* src/version.c: New file.
+
+1993-03-25  Richard Stallman  <rms@gnu.org>
+
+	* src/output.c: entered into RCS
+
+1992-09-25  Richard Stallman  <rms@gnu.org>
+
+	* configure.bat: entered into RCS
+
+1992-06-22  Richard Stallman  <rms@gnu.org>
+
+	* src/vmsgetargs.c: entered into RCS
+
+1992-06-22  Richard Stallman  <rms@gnu.org>
+
+	* doc/bison.rnh: entered into RCS
+
+1992-04-20  David J. MacKenzie  <djm@gnu.org>
+
+	* README: entered into RCS
+
+1992-01-22  Richard Stallman  <rms@gnu.org>
+
+	* src/machine.h: entered into RCS
+
+1991-12-21  Richard Stallman  <rms@gnu.org>
+
+	* src/lalr.c, src/closure.c:
+	entered into RCS
+
+1991-12-20  Richard Stallman  <rms@gnu.org>
+
+	* src/state.h: entered into RCS
+
+1991-12-18  Richard Stallman  <rms@gnu.org>
+
+	* src/print.c, src/nullable.c, src/derives.c:
+	entered into RCS
+
+1991-11-03  David J. MacKenzie  <djm@gnu.org>
+
+	* src/warshall.c, src/types.h, src/symtab.h, src/lex.h, src/gram.c, src/gram.h, src/files.h:
+	entered into RCS
+
+1988-09-09  Richard Stallman  <rms@gnu.org>
+
+	* src/bison.hairy: entered into RCS
+
+1987-12-16  Richard Stallman  <rms@gnu.org>
+
+	* REFERENCES: entered into RCS
+
+
+	-----
+
+	Copyright (C) 1987-1988, 1991-2013 Free Software Foundation,
+	Inc.
+
+	Copying and distribution of this file, with or without
+	modification, are permitted provided the copyright notice and this
+	notice are preserved.
diff --git a/contrib/tools/bison/bison/NEWS b/contrib/tools/bison/bison/NEWS
new file mode 100644
index 0000000000..991a308bec
--- /dev/null
+++ b/contrib/tools/bison/bison/NEWS
@@ -0,0 +1,2673 @@
+GNU Bison NEWS
+
+* Noteworthy changes in release 3.0 (2013-07-25) [stable]
+
+** WARNING: Future backward-incompatibilities!
+
+  Like other GNU packages, Bison will start using some of the C99 features
+  for its own code, especially the definition of variables after statements.
+  The generated C parsers still aim at C90.
+
+** Backward incompatible changes
+
+*** Obsolete features
+
+  Support for YYFAIL is removed (deprecated in Bison 2.4.2): use YYERROR.
+
+  Support for yystype and yyltype is removed (deprecated in Bison 1.875):
+  use YYSTYPE and YYLTYPE.
+
+  Support for YYLEX_PARAM and YYPARSE_PARAM is removed (deprecated in Bison
+  1.875): use %lex-param, %parse-param, or %param.
+
+  Missing semicolons at the end of actions are no longer added (as announced
+  in the release 2.5).
+
+*** Use of YACC='bison -y'
+
+  TL;DR: With Autoconf <= 2.69, pass -Wno-yacc to (AM_)YFLAGS if you use
+  Bison extensions.
+
+  Traditional Yacc generates 'y.tab.c' whatever the name of the input file.
+  Therefore Makefiles written for Yacc expect 'y.tab.c' (and possibly
+  'y.tab.h' and 'y.outout') to be generated from 'foo.y'.
+
+  To this end, for ages, AC_PROG_YACC, Autoconf's macro to look for an
+  implementation of Yacc, was using Bison as 'bison -y'.  While it does
+  ensure compatible output file names, it also enables warnings for
+  incompatibilities with POSIX Yacc.  In other words, 'bison -y' triggers
+  warnings for Bison extensions.
+
+  Autoconf 2.70+ fixes this incompatibility by using YACC='bison -o y.tab.c'
+  (which also generates 'y.tab.h' and 'y.output' when needed).
+  Alternatively, disable Yacc warnings by passing '-Wno-yacc' to your Yacc
+  flags (YFLAGS, or AM_YFLAGS with Automake).
+
+** Bug fixes
+
+*** The epilogue is no longer affected by internal #defines (glr.c)
+
+  The glr.c skeleton uses defines such as #define yylval (yystackp->yyval) in
+  generated code.  These weren't properly undefined before the inclusion of
+  the user epilogue, so functions such as the following were butchered by the
+  preprocessor expansion:
+
+    int yylex (YYSTYPE *yylval);
+
+  This is fixed: yylval, yynerrs, yychar, and yylloc are now valid
+  identifiers for user-provided variables.
+
+*** stdio.h is no longer needed when locations are enabled (yacc.c)
+
+  Changes in Bison 2.7 introduced a dependency on FILE and fprintf when
+  locations are enabled.  This is fixed.
+
+*** Warnings about useless %pure-parser/%define api.pure are restored
+
+** Diagnostics reported by Bison
+
+  Most of these features were contributed by Théophile Ranquet and Victor
+  Santet.
+
+*** Carets
+
+  Version 2.7 introduced caret errors, for a prettier output.  These are now
+  activated by default.  The old format can still be used by invoking Bison
+  with -fno-caret (or -fnone).
+
+  Some error messages that reproduced excerpts of the grammar are now using
+  the caret information only.  For instance on:
+
+    %%
+    exp: 'a' | 'a';
+
+  Bison 2.7 reports:
+
+    in.y: warning: 1 reduce/reduce conflict [-Wconflicts-rr]
+    in.y:2.12-14: warning: rule useless in parser due to conflicts: exp: 'a' [-Wother]
+
+  Now bison reports:
+
+    in.y: warning: 1 reduce/reduce conflict [-Wconflicts-rr]
+    in.y:2.12-14: warning: rule useless in parser due to conflicts [-Wother]
+     exp: 'a' | 'a';
+                ^^^
+
+  and "bison -fno-caret" reports:
+
+    in.y: warning: 1 reduce/reduce conflict [-Wconflicts-rr]
+    in.y:2.12-14: warning: rule useless in parser due to conflicts [-Wother]
+
+*** Enhancements of the -Werror option
+
+  The -Werror=CATEGORY option is now recognized, and will treat specified
+  warnings as errors. The warnings need not have been explicitly activated
+  using the -W option, this is similar to what GCC 4.7 does.
+
+  For example, given the following command line, Bison will treat both
+  warnings related to POSIX Yacc incompatibilities and S/R conflicts as
+  errors (and only those):
+
+    $ bison -Werror=yacc,error=conflicts-sr input.y
+
+  If no categories are specified, -Werror will make all active warnings into
+  errors. For example, the following line does the same the previous example:
+
+    $ bison -Werror -Wnone -Wyacc -Wconflicts-sr input.y
+
+  (By default -Wconflicts-sr,conflicts-rr,deprecated,other is enabled.)
+
+  Note that the categories in this -Werror option may not be prefixed with
+  "no-". However, -Wno-error[=CATEGORY] is valid.
+
+  Note that -y enables -Werror=yacc. Therefore it is now possible to require
+  Yacc-like behavior (e.g., always generate y.tab.c), but to report
+  incompatibilities as warnings: "-y -Wno-error=yacc".
+
+*** The display of warnings is now richer
+
+  The option that controls a given warning is now displayed:
+
+    foo.y:4.6: warning: type clash on default action: <foo> != <bar> [-Wother]
+
+  In the case of warnings treated as errors, the prefix is changed from
+  "warning: " to "error: ", and the suffix is displayed, in a manner similar
+  to GCC, as [-Werror=CATEGORY].
+
+  For instance, where the previous version of Bison would report (and exit
+  with failure):
+
+    bison: warnings being treated as errors
+    input.y:1.1: warning: stray ',' treated as white space
+
+  it now reports:
+
+    input.y:1.1: error: stray ',' treated as white space [-Werror=other]
+
+*** Deprecated constructs
+
+  The new 'deprecated' warning category flags obsolete constructs whose
+  support will be discontinued.  It is enabled by default.  These warnings
+  used to be reported as 'other' warnings.
+
+*** Useless semantic types
+
+  Bison now warns about useless (uninhabited) semantic types.  Since
+  semantic types are not declared to Bison (they are defined in the opaque
+  %union structure), it is %printer/%destructor directives about useless
+  types that trigger the warning:
+
+    %token <type1> term
+    %type  <type2> nterm
+    %printer    {} <type1> <type3>
+    %destructor {} <type2> <type4>
+    %%
+    nterm: term { $$ = $1; };
+
+    3.28-34: warning: type <type3> is used, but is not associated to any symbol
+    4.28-34: warning: type <type4> is used, but is not associated to any symbol
+
+*** Undefined but unused symbols
+
+  Bison used to raise an error for undefined symbols that are not used in
+  the grammar.  This is now only a warning.
+
+    %printer    {} symbol1
+    %destructor {} symbol2
+    %type <type>   symbol3
+    %%
+    exp: "a";
+
+*** Useless destructors or printers
+
+  Bison now warns about useless destructors or printers.  In the following
+  example, the printer for <type1>, and the destructor for <type2> are
+  useless: all symbols of <type1> (token1) already have a printer, and all
+  symbols of type <type2> (token2) already have a destructor.
+
+    %token <type1> token1
+           <type2> token2
+           <type3> token3
+           <type4> token4
+    %printer    {} token1 <type1> <type3>
+    %destructor {} token2 <type2> <type4>
+
+*** Conflicts
+
+  The warnings and error messages about shift/reduce and reduce/reduce
+  conflicts have been normalized.  For instance on the following foo.y file:
+
+    %glr-parser
+    %%
+    exp: exp '+' exp | '0' | '0';
+
+  compare the previous version of bison:
+
+    $ bison foo.y
+    foo.y: conflicts: 1 shift/reduce, 2 reduce/reduce
+    $ bison -Werror foo.y
+    bison: warnings being treated as errors
+    foo.y: conflicts: 1 shift/reduce, 2 reduce/reduce
+
+  with the new behavior:
+
+    $ bison foo.y
+    foo.y: warning: 1 shift/reduce conflict [-Wconflicts-sr]
+    foo.y: warning: 2 reduce/reduce conflicts [-Wconflicts-rr]
+    $ bison -Werror foo.y
+    foo.y: error: 1 shift/reduce conflict [-Werror=conflicts-sr]
+    foo.y: error: 2 reduce/reduce conflicts [-Werror=conflicts-rr]
+
+  When %expect or %expect-rr is used, such as with bar.y:
+
+    %expect 0
+    %glr-parser
+    %%
+    exp: exp '+' exp | '0' | '0';
+
+  Former behavior:
+
+    $ bison bar.y
+    bar.y: conflicts: 1 shift/reduce, 2 reduce/reduce
+    bar.y: expected 0 shift/reduce conflicts
+    bar.y: expected 0 reduce/reduce conflicts
+
+  New one:
+
+    $ bison bar.y
+    bar.y: error: shift/reduce conflicts: 1 found, 0 expected
+    bar.y: error: reduce/reduce conflicts: 2 found, 0 expected
+
+** Incompatibilities with POSIX Yacc
+
+  The 'yacc' category is no longer part of '-Wall', enable it explicitly
+  with '-Wyacc'.
+
+** Additional yylex/yyparse arguments
+
+  The new directive %param declares additional arguments to both yylex and
+  yyparse.  The %lex-param, %parse-param, and %param directives support one
+  or more arguments.  Instead of
+
+    %lex-param   {arg1_type *arg1}
+    %lex-param   {arg2_type *arg2}
+    %parse-param {arg1_type *arg1}
+    %parse-param {arg2_type *arg2}
+
+  one may now declare
+
+    %param {arg1_type *arg1} {arg2_type *arg2}
+
+** Types of values for %define variables
+
+  Bison used to make no difference between '%define foo bar' and '%define
+  foo "bar"'.  The former is now called a 'keyword value', and the latter a
+  'string value'.  A third kind was added: 'code values', such as '%define
+  foo {bar}'.
+
+  Keyword variables are used for fixed value sets, e.g.,
+
+    %define lr.type lalr
+
+  Code variables are used for value in the target language, e.g.,
+
+    %define api.value.type {struct semantic_type}
+
+  String variables are used remaining cases, e.g. file names.
+
+** Variable api.token.prefix
+
+  The variable api.token.prefix changes the way tokens are identified in
+  the generated files.  This is especially useful to avoid collisions
+  with identifiers in the target language.  For instance
+
+    %token FILE for ERROR
+    %define api.token.prefix {TOK_}
+    %%
+    start: FILE for ERROR;
+
+  will generate the definition of the symbols TOK_FILE, TOK_for, and
+  TOK_ERROR in the generated sources.  In particular, the scanner must
+  use these prefixed token names, although the grammar itself still
+  uses the short names (as in the sample rule given above).
+
+** Variable api.value.type
+
+  This new %define variable supersedes the #define macro YYSTYPE.  The use
+  of YYSTYPE is discouraged.  In particular, #defining YYSTYPE *and* either
+  using %union or %defining api.value.type results in undefined behavior.
+
+  Either define api.value.type, or use "%union":
+
+    %union
+    {
+      int ival;
+      char *sval;
+    }
+    %token <ival> INT "integer"
+    %token <sval> STRING "string"
+    %printer { fprintf (yyo, "%d", $$); } <ival>
+    %destructor { free ($$); } <sval>
+
+    /* In yylex().  */
+    yylval.ival = 42; return INT;
+    yylval.sval = "42"; return STRING;
+
+  The %define variable api.value.type supports both keyword and code values.
+
+  The keyword value 'union' means that the user provides genuine types, not
+  union member names such as "ival" and "sval" above (WARNING: will fail if
+  -y/--yacc/%yacc is enabled).
+
+    %define api.value.type union
+    %token <int> INT "integer"
+    %token <char *> STRING "string"
+    %printer { fprintf (yyo, "%d", $$); } <int>
+    %destructor { free ($$); } <char *>
+
+    /* In yylex().  */
+    yylval.INT = 42; return INT;
+    yylval.STRING = "42"; return STRING;
+
+  The keyword value variant is somewhat equivalent, but for C++ special
+  provision is made to allow classes to be used (more about this below).
+
+    %define api.value.type variant
+    %token <int> INT "integer"
+    %token <std::string> STRING "string"
+
+  Code values (in braces) denote user defined types.  This is where YYSTYPE
+  used to be used.
+
+    %code requires
+    {
+      struct my_value
+      {
+        enum
+        {
+          is_int, is_string
+        } kind;
+        union
+        {
+          int ival;
+          char *sval;
+        } u;
+      };
+    }
+    %define api.value.type {struct my_value}
+    %token <u.ival> INT "integer"
+    %token <u.sval> STRING "string"
+    %printer { fprintf (yyo, "%d", $$); } <u.ival>
+    %destructor { free ($$); } <u.sval>
+
+    /* In yylex().  */
+    yylval.u.ival = 42; return INT;
+    yylval.u.sval = "42"; return STRING;
+
+** Variable parse.error
+
+  This variable controls the verbosity of error messages.  The use of the
+  %error-verbose directive is deprecated in favor of "%define parse.error
+  verbose".
+
+** Renamed %define variables
+
+  The following variables have been renamed for consistency.  Backward
+  compatibility is ensured, but upgrading is recommended.
+
+    lr.default-reductions      -> lr.default-reduction
+    lr.keep-unreachable-states -> lr.keep-unreachable-state
+    namespace                  -> api.namespace
+    stype                      -> api.value.type
+
+** Semantic predicates
+
+  Contributed by Paul Hilfinger.
+
+  The new, experimental, semantic-predicate feature allows actions of the
+  form "%?{ BOOLEAN-EXPRESSION }", which cause syntax errors (as for
+  YYERROR) if the expression evaluates to 0, and are evaluated immediately
+  in GLR parsers, rather than being deferred.  The result is that they allow
+  the programmer to prune possible parses based on the values of run-time
+  expressions.
+
+** The directive %expect-rr is now an error in non GLR mode
+
+  It used to be an error only if used in non GLR mode, _and_ if there are
+  reduce/reduce conflicts.
+
+** Tokens are numbered in their order of appearance
+
+  Contributed by Valentin Tolmer.
+
+  With '%token A B', A had a number less than the one of B.  However,
+  precedence declarations used to generate a reversed order.  This is now
+  fixed, and introducing tokens with any of %token, %left, %right,
+  %precedence, or %nonassoc yields the same result.
+
+  When mixing declarations of tokens with a litteral character (e.g., 'a')
+  or with an identifier (e.g., B) in a precedence declaration, Bison
+  numbered the litteral characters first.  For example
+
+    %right A B 'c' 'd'
+
+  would lead to the tokens declared in this order: 'c' 'd' A B.  Again, the
+  input order is now preserved.
+
+  These changes were made so that one can remove useless precedence and
+  associativity declarations (i.e., map %nonassoc, %left or %right to
+  %precedence, or to %token) and get exactly the same output.
+
+** Useless precedence and associativity
+
+  Contributed by Valentin Tolmer.
+
+  When developing and maintaining a grammar, useless associativity and
+  precedence directives are common.  They can be a nuisance: new ambiguities
+  arising are sometimes masked because their conflicts are resolved due to
+  the extra precedence or associativity information.  Furthermore, it can
+  hinder the comprehension of a new grammar: one will wonder about the role
+  of a precedence, where in fact it is useless.  The following changes aim
+  at detecting and reporting these extra directives.
+
+*** Precedence warning category
+
+  A new category of warning, -Wprecedence, was introduced. It flags the
+  useless precedence and associativity directives.
+
+*** Useless associativity
+
+  Bison now warns about symbols with a declared associativity that is never
+  used to resolve conflicts.  In that case, using %precedence is sufficient;
+  the parsing tables will remain unchanged.  Solving these warnings may raise
+  useless precedence warnings, as the symbols no longer have associativity.
+  For example:
+
+    %left '+'
+    %left '*'
+    %%
+    exp:
+      "number"
+    | exp '+' "number"
+    | exp '*' exp
+    ;
+
+  will produce a
+
+    warning: useless associativity for '+', use %precedence [-Wprecedence]
+     %left '+'
+           ^^^
+
+*** Useless precedence
+
+  Bison now warns about symbols with a declared precedence and no declared
+  associativity (i.e., declared with %precedence), and whose precedence is
+  never used.  In that case, the symbol can be safely declared with %token
+  instead, without modifying the parsing tables.  For example:
+
+    %precedence '='
+    %%
+    exp: "var" '=' "number";
+
+  will produce a
+
+    warning: useless precedence for '=' [-Wprecedence]
+     %precedence '='
+                 ^^^
+
+*** Useless precedence and associativity
+
+  In case of both useless precedence and associativity, the issue is flagged
+  as follows:
+
+    %nonassoc '='
+    %%
+    exp: "var" '=' "number";
+
+  The warning is:
+
+    warning: useless precedence and associativity for '=' [-Wprecedence]
+     %nonassoc '='
+               ^^^
+
+** Empty rules
+
+  With help from Joel E. Denny and Gabriel Rassoul.
+
+  Empty rules (i.e., with an empty right-hand side) can now be explicitly
+  marked by the new %empty directive.  Using %empty on a non-empty rule is
+  an error.  The new -Wempty-rule warning reports empty rules without
+  %empty.  On the following grammar:
+
+    %%
+    s: a b c;
+    a: ;
+    b: %empty;
+    c: 'a' %empty;
+
+  bison reports:
+
+    3.4-5: warning: empty rule without %empty [-Wempty-rule]
+     a: {}
+        ^^
+    5.8-13: error: %empty on non-empty rule
+     c: 'a' %empty {};
+            ^^^^^^
+
+** Java skeleton improvements
+
+  The constants for token names were moved to the Lexer interface.  Also, it
+  is possible to add code to the parser's constructors using "%code init"
+  and "%define init_throws".
+  Contributed by Paolo Bonzini.
+
+  The Java skeleton now supports push parsing.
+  Contributed by Dennis Heimbigner.
+
+** C++ skeletons improvements
+
+*** The parser header is no longer mandatory (lalr1.cc, glr.cc)
+
+  Using %defines is now optional.  Without it, the needed support classes
+  are defined in the generated parser, instead of additional files (such as
+  location.hh, position.hh and stack.hh).
+
+*** Locations are no longer mandatory (lalr1.cc, glr.cc)
+
+  Both lalr1.cc and glr.cc no longer require %location.
+
+*** syntax_error exception (lalr1.cc)
+
+  The C++ parser features a syntax_error exception, which can be
+  thrown from the scanner or from user rules to raise syntax errors.
+  This facilitates reporting errors caught in sub-functions (e.g.,
+  rejecting too large integral literals from a conversion function
+  used by the scanner, or rejecting invalid combinations from a
+  factory invoked by the user actions).
+
+*** %define api.value.type variant
+
+  This is based on a submission from Michiel De Wilde.  With help
+  from Théophile Ranquet.
+
+  In this mode, complex C++ objects can be used as semantic values.  For
+  instance:
+
+    %token <::std::string> TEXT;
+    %token <int> NUMBER;
+    %token SEMICOLON ";"
+    %type <::std::string> item;
+    %type <::std::list<std::string>> list;
+    %%
+    result:
+      list  { std::cout << $1 << std::endl; }
+    ;
+
+    list:
+      %empty        { /* Generates an empty string list. */ }
+    | list item ";" { std::swap ($$, $1); $$.push_back ($2); }
+    ;
+
+    item:
+      TEXT    { std::swap ($$, $1); }
+    | NUMBER  { $$ = string_cast ($1); }
+    ;
+
+*** %define api.token.constructor
+
+  When variants are enabled, Bison can generate functions to build the
+  tokens.  This guarantees that the token type (e.g., NUMBER) is consistent
+  with the semantic value (e.g., int):
+
+    parser::symbol_type yylex ()
+    {
+      parser::location_type loc = ...;
+      ...
+      return parser::make_TEXT ("Hello, world!", loc);
+      ...
+      return parser::make_NUMBER (42, loc);
+      ...
+      return parser::make_SEMICOLON (loc);
+      ...
+    }
+
+*** C++ locations
+
+  There are operator- and operator-= for 'location'.  Negative line/column
+  increments can no longer underflow the resulting value.
+
+* Noteworthy changes in release 2.7.1 (2013-04-15) [stable]
+
+** Bug fixes
+
+*** Fix compiler attribute portability (yacc.c)
+
+  With locations enabled, __attribute__ was used unprotected.
+
+*** Fix some compiler warnings (lalr1.cc)
+
+* Noteworthy changes in release 2.7 (2012-12-12) [stable]
+
+** Bug fixes
+
+  Warnings about uninitialized yylloc in yyparse have been fixed.
+
+  Restored C90 compliance (yet no report was ever made).
+
+** Diagnostics are improved
+
+  Contributed by Théophile Ranquet.
+
+*** Changes in the format of error messages
+
+  This used to be the format of many error reports:
+
+    input.y:2.7-12: %type redeclaration for exp
+    input.y:1.7-12: previous declaration
+
+  It is now:
+
+    input.y:2.7-12: error: %type redeclaration for exp
+    input.y:1.7-12:     previous declaration
+
+*** New format for error reports: carets
+
+  Caret errors have been added to Bison:
+
+    input.y:2.7-12: error: %type redeclaration for exp
+     %type <sval> exp
+           ^^^^^^
+    input.y:1.7-12:     previous declaration
+     %type <ival> exp
+           ^^^^^^
+
+  or
+
+    input.y:3.20-23: error: ambiguous reference: '$exp'
+     exp: exp '+' exp { $exp = $1 + $3; };
+                        ^^^^
+    input.y:3.1-3:       refers to: $exp at $$
+     exp: exp '+' exp { $exp = $1 + $3; };
+     ^^^
+    input.y:3.6-8:       refers to: $exp at $1
+     exp: exp '+' exp { $exp = $1 + $3; };
+          ^^^
+    input.y:3.14-16:     refers to: $exp at $3
+     exp: exp '+' exp { $exp = $1 + $3; };
+                  ^^^
+
+  The default behavior for now is still not to display these unless
+  explicitly asked with -fcaret (or -fall). However, in a later release, it
+  will be made the default behavior (but may still be deactivated with
+  -fno-caret).
+
+** New value for %define variable: api.pure full
+
+  The %define variable api.pure requests a pure (reentrant) parser. However,
+  for historical reasons, using it in a location-tracking Yacc parser
+  resulted in a yyerror function that did not take a location as a
+  parameter. With this new value, the user may request a better pure parser,
+  where yyerror does take a location as a parameter (in location-tracking
+  parsers).
+
+  The use of "%define api.pure true" is deprecated in favor of this new
+  "%define api.pure full".
+
+** New %define variable: api.location.type (glr.cc, lalr1.cc, lalr1.java)
+
+  The %define variable api.location.type defines the name of the type to use
+  for locations.  When defined, Bison no longer generates the position.hh
+  and location.hh files, nor does the parser will include them: the user is
+  then responsible to define her type.
+
+  This can be used in programs with several parsers to factor their location
+  and position files: let one of them generate them, and the others just use
+  them.
+
+  This feature was actually introduced, but not documented, in Bison 2.5,
+  under the name "location_type" (which is maintained for backward
+  compatibility).
+
+  For consistency, lalr1.java's %define variables location_type and
+  position_type are deprecated in favor of api.location.type and
+  api.position.type.
+
+** Exception safety (lalr1.cc)
+
+  The parse function now catches exceptions, uses the %destructors to
+  release memory (the lookahead symbol and the symbols pushed on the stack)
+  before re-throwing the exception.
+
+  This feature is somewhat experimental.  User feedback would be
+  appreciated.
+
+** Graph improvements in DOT and XSLT
+
+  Contributed by Théophile Ranquet.
+
+  The graphical presentation of the states is more readable: their shape is
+  now rectangular, the state number is clearly displayed, and the items are
+  numbered and left-justified.
+
+  The reductions are now explicitly represented as transitions to other
+  diamond shaped nodes.
+
+  These changes are present in both --graph output and xml2dot.xsl XSLT
+  processing, with minor (documented) differences.
+
+** %language is no longer an experimental feature.
+
+  The introduction of this feature, in 2.4, was four years ago. The
+  --language option and the %language directive are no longer experimental.
+
+** Documentation
+
+  The sections about shift/reduce and reduce/reduce conflicts resolution
+  have been fixed and extended.
+
+  Although introduced more than four years ago, XML and Graphviz reports
+  were not properly documented.
+
+  The translation of mid-rule actions is now described.
+
+* Noteworthy changes in release 2.6.5 (2012-11-07) [stable]
+
+  We consider compiler warnings about Bison generated parsers to be bugs.
+  Rather than working around them in your own project, please consider
+  reporting them to us.
+
+** Bug fixes
+
+  Warnings about uninitialized yylval and/or yylloc for push parsers with a
+  pure interface have been fixed for GCC 4.0 up to 4.8, and Clang 2.9 to
+  3.2.
+
+  Other issues in the test suite have been addressed.
+
+  Null characters are correctly displayed in error messages.
+
+  When possible, yylloc is correctly initialized before calling yylex.  It
+  is no longer necessary to initialize it in the %initial-action.
+
+* Noteworthy changes in release 2.6.4 (2012-10-23) [stable]
+
+  Bison 2.6.3's --version was incorrect.  This release fixes this issue.
+
+* Noteworthy changes in release 2.6.3 (2012-10-22) [stable]
+
+** Bug fixes
+
+  Bugs and portability issues in the test suite have been fixed.
+
+  Some errors in translations have been addressed, and --help now directs
+  users to the appropriate place to report them.
+
+  Stray Info files shipped by accident are removed.
+
+  Incorrect definitions of YY_, issued by yacc.c when no parser header is
+  generated, are removed.
+
+  All the generated headers are self-contained.
+
+** Header guards (yacc.c, glr.c, glr.cc)
+
+  In order to avoid collisions, the header guards are now
+  YY_<PREFIX>_<FILE>_INCLUDED, instead of merely <PREFIX>_<FILE>.
+  For instance the header generated from
+
+    %define api.prefix "calc"
+    %defines "lib/parse.h"
+
+  will use YY_CALC_LIB_PARSE_H_INCLUDED as guard.
+
+** Fix compiler warnings in the generated parser (yacc.c, glr.c)
+
+  The compilation of pure parsers (%define api.pure) can trigger GCC
+  warnings such as:
+
+    input.c: In function 'yyparse':
+    input.c:1503:12: warning: 'yylval' may be used uninitialized in this
+                              function [-Wmaybe-uninitialized]
+       *++yyvsp = yylval;
+                ^
+
+  This is now fixed; pragmas to avoid these warnings are no longer needed.
+
+  Warnings from clang ("equality comparison with extraneous parentheses" and
+  "function declared 'noreturn' should not return") have also been
+  addressed.
+
+* Noteworthy changes in release 2.6.2 (2012-08-03) [stable]
+
+** Bug fixes
+
+  Buffer overruns, complaints from Flex, and portability issues in the test
+  suite have been fixed.
+
+** Spaces in %lex- and %parse-param (lalr1.cc, glr.cc)
+
+  Trailing end-of-lines in %parse-param or %lex-param would result in
+  invalid C++.  This is fixed.
+
+** Spurious spaces and end-of-lines
+
+  The generated files no longer end (nor start) with empty lines.
+
+* Noteworthy changes in release 2.6.1 (2012-07-30) [stable]
+
+ Bison no longer executes user-specified M4 code when processing a grammar.
+
+** Future Changes
+
+  In addition to the removal of the features announced in Bison 2.6, the
+  next major release will remove the "Temporary hack for adding a semicolon
+  to the user action", as announced in the release 2.5.  Instead of:
+
+    exp: exp "+" exp { $$ = $1 + $3 };
+
+  write:
+
+    exp: exp "+" exp { $$ = $1 + $3; };
+
+** Bug fixes
+
+*** Type names are now properly escaped.
+
+*** glr.cc: set_debug_level and debug_level work as expected.
+
+*** Stray @ or $ in actions
+
+  While Bison used to warn about stray $ or @ in action rules, it did not
+  for other actions such as printers, destructors, or initial actions.  It
+  now does.
+
+** Type names in actions
+
+  For consistency with rule actions, it is now possible to qualify $$ by a
+  type-name in destructors, printers, and initial actions.  For instance:
+
+    %printer { fprintf (yyo, "(%d, %f)", $<ival>$, $<fval>$); } <*> <>;
+
+  will display two values for each typed and untyped symbol (provided
+  that YYSTYPE has both "ival" and "fval" fields).
+
+* Noteworthy changes in release 2.6 (2012-07-19) [stable]
+
+** Future changes
+
+  The next major release of Bison will drop support for the following
+  deprecated features.  Please report disagreements to bug-bison@gnu.org.
+
+*** K&R C parsers
+
+  Support for generating parsers in K&R C will be removed.  Parsers
+  generated for C support ISO C90, and are tested with ISO C99 and ISO C11
+  compilers.
+
+*** Features deprecated since Bison 1.875
+
+  The definitions of yystype and yyltype will be removed; use YYSTYPE and
+  YYLTYPE.
+
+  YYPARSE_PARAM and YYLEX_PARAM, deprecated in favor of %parse-param and
+  %lex-param, will no longer be supported.
+
+  Support for the preprocessor symbol YYERROR_VERBOSE will be removed, use
+  %error-verbose.
+
+*** The generated header will be included (yacc.c)
+
+  Instead of duplicating the content of the generated header (definition of
+  YYSTYPE, yyparse declaration etc.), the generated parser will include it,
+  as is already the case for GLR or C++ parsers.  This change is deferred
+  because existing versions of ylwrap (e.g., Automake 1.12.1) do not support
+  it.
+
+** Generated Parser Headers
+
+*** Guards (yacc.c, glr.c, glr.cc)
+
+  The generated headers are now guarded, as is already the case for C++
+  parsers (lalr1.cc).  For instance, with --defines=foo.h:
+
+    #ifndef YY_FOO_H
+    # define YY_FOO_H
+    ...
+    #endif /* !YY_FOO_H  */
+
+*** New declarations (yacc.c, glr.c)
+
+  The generated header now declares yydebug and yyparse.  Both honor
+  --name-prefix=bar_, and yield
+
+    int bar_parse (void);
+
+  rather than
+
+    #define yyparse bar_parse
+    int yyparse (void);
+
+  in order to facilitate the inclusion of several parser headers inside a
+  single compilation unit.
+
+*** Exported symbols in C++
+
+  The symbols YYTOKEN_TABLE and YYERROR_VERBOSE, which were defined in the
+  header, are removed, as they prevent the possibility of including several
+  generated headers from a single compilation unit.
+
+*** YYLSP_NEEDED
+
+  For the same reasons, the undocumented and unused macro YYLSP_NEEDED is no
+  longer defined.
+
+** New %define variable: api.prefix
+
+  Now that the generated headers are more complete and properly protected
+  against multiple inclusions, constant names, such as YYSTYPE are a
+  problem.  While yyparse and others are properly renamed by %name-prefix,
+  YYSTYPE, YYDEBUG and others have never been affected by it.  Because it
+  would introduce backward compatibility issues in projects not expecting
+  YYSTYPE to be renamed, instead of changing the behavior of %name-prefix,
+  it is deprecated in favor of a new %define variable: api.prefix.
+
+  The following examples compares both:
+
+    %name-prefix "bar_"               | %define api.prefix "bar_"
+    %token <ival> FOO                   %token <ival> FOO
+    %union { int ival; }                %union { int ival; }
+    %%                                  %%
+    exp: 'a';                           exp: 'a';
+
+  bison generates:
+
+    #ifndef BAR_FOO_H                   #ifndef BAR_FOO_H
+    # define BAR_FOO_H                  # define BAR_FOO_H
+
+    /* Enabling traces.  */             /* Enabling traces.  */
+    # ifndef YYDEBUG                  | # ifndef BAR_DEBUG
+                                      > #  if defined YYDEBUG
+                                      > #   if YYDEBUG
+                                      > #    define BAR_DEBUG 1
+                                      > #   else
+                                      > #    define BAR_DEBUG 0
+                                      > #   endif
+                                      > #  else
+    #  define YYDEBUG 0               | #   define BAR_DEBUG 0
+                                      > #  endif
+    # endif                           | # endif
+
+    # if YYDEBUG                      | # if BAR_DEBUG
+    extern int bar_debug;               extern int bar_debug;
+    # endif                             # endif
+
+    /* Tokens.  */                      /* Tokens.  */
+    # ifndef YYTOKENTYPE              | # ifndef BAR_TOKENTYPE
+    #  define YYTOKENTYPE             | #  define BAR_TOKENTYPE
+       enum yytokentype {             |    enum bar_tokentype {
+         FOO = 258                           FOO = 258
+       };                                  };
+    # endif                             # endif
+
+    #if ! defined YYSTYPE \           | #if ! defined BAR_STYPE \
+     && ! defined YYSTYPE_IS_DECLARED |  && ! defined BAR_STYPE_IS_DECLARED
+    typedef union YYSTYPE             | typedef union BAR_STYPE
+    {                                   {
+     int ival;                           int ival;
+    } YYSTYPE;                        | } BAR_STYPE;
+    # define YYSTYPE_IS_DECLARED 1    | # define BAR_STYPE_IS_DECLARED 1
+    #endif                              #endif
+
+    extern YYSTYPE bar_lval;          | extern BAR_STYPE bar_lval;
+
+    int bar_parse (void);               int bar_parse (void);
+
+    #endif /* !BAR_FOO_H  */            #endif /* !BAR_FOO_H  */
+
+* Noteworthy changes in release 2.5.1 (2012-06-05) [stable]
+
+** Future changes:
+
+  The next major release will drop support for generating parsers in K&R C.
+
+** yacc.c: YYBACKUP works as expected.
+
+** glr.c improvements:
+
+*** Location support is eliminated when not requested:
+
+  GLR parsers used to include location-related code even when locations were
+  not requested, and therefore not even usable.
+
+*** __attribute__ is preserved:
+
+  __attribute__ is no longer disabled when __STRICT_ANSI__ is defined (i.e.,
+  when -std is passed to GCC).
+
+** lalr1.java: several fixes:
+
+  The Java parser no longer throws ArrayIndexOutOfBoundsException if the
+  first token leads to a syntax error.  Some minor clean ups.
+
+** Changes for C++:
+
+*** C++11 compatibility:
+
+  C and C++ parsers use "nullptr" instead of "0" when __cplusplus is 201103L
+  or higher.
+
+*** Header guards
+
+  The header files such as "parser.hh", "location.hh", etc. used a constant
+  name for preprocessor guards, for instance:
+
+    #ifndef BISON_LOCATION_HH
+    # define BISON_LOCATION_HH
+    ...
+    #endif // !BISON_LOCATION_HH
+
+  The inclusion guard is now computed from "PREFIX/FILE-NAME", where lower
+  case characters are converted to upper case, and series of
+  non-alphanumerical characters are converted to an underscore.
+
+  With "bison -o lang++/parser.cc", "location.hh" would now include:
+
+    #ifndef YY_LANG_LOCATION_HH
+    # define YY_LANG_LOCATION_HH
+    ...
+    #endif // !YY_LANG_LOCATION_HH
+
+*** C++ locations:
+
+  The position and location constructors (and their initialize methods)
+  accept new arguments for line and column.  Several issues in the
+  documentation were fixed.
+
+** liby is no longer asking for "rpl_fprintf" on some platforms.
+
+** Changes in the manual:
+
+*** %printer is documented
+
+  The "%printer" directive, supported since at least Bison 1.50, is finally
+  documented.  The "mfcalc" example is extended to demonstrate it.
+
+  For consistency with the C skeletons, the C++ parsers now also support
+  "yyoutput" (as an alias to "debug_stream ()").
+
+*** Several improvements have been made:
+
+  The layout for grammar excerpts was changed to a more compact scheme.
+  Named references are motivated.  The description of the automaton
+  description file (*.output) is updated to the current format.  Incorrect
+  index entries were fixed.  Some other errors were fixed.
+
+** Building bison:
+
+*** Conflicting prototypes with recent/modified Flex.
+
+  Fixed build problems with the current, unreleased, version of Flex, and
+  some modified versions of 2.5.35, which have modified function prototypes.
+
+*** Warnings during the build procedure have been eliminated.
+
+*** Several portability problems in the test suite have been fixed:
+
+  This includes warnings with some compilers, unexpected behavior of tools
+  such as diff, warning messages from the test suite itself, etc.
+
+*** The install-pdf target works properly:
+
+  Running "make install-pdf" (or -dvi, -html, -info, and -ps) no longer
+  halts in the middle of its course.
+
+* Changes in version 2.5 (2011-05-14):
+
+** Grammar symbol names can now contain non-initial dashes:
+
+  Consistently with directives (such as %error-verbose) and with
+  %define variables (e.g. push-pull), grammar symbol names may contain
+  dashes in any position except the beginning.  This is a GNU
+  extension over POSIX Yacc.  Thus, use of this extension is reported
+  by -Wyacc and rejected in Yacc mode (--yacc).
+
+** Named references:
+
+  Historically, Yacc and Bison have supported positional references
+  ($n, $$) to allow access to symbol values from inside of semantic
+  actions code.
+
+  Starting from this version, Bison can also accept named references.
+  When no ambiguity is possible, original symbol names may be used
+  as named references:
+
+    if_stmt : "if" cond_expr "then" then_stmt ';'
+    { $if_stmt = mk_if_stmt($cond_expr, $then_stmt); }
+
+  In the more common case, explicit names may be declared:
+
+    stmt[res] : "if" expr[cond] "then" stmt[then] "else" stmt[else] ';'
+    { $res = mk_if_stmt($cond, $then, $else); }
+
+  Location information is also accessible using @name syntax.  When
+  accessing symbol names containing dots or dashes, explicit bracketing
+  ($[sym.1]) must be used.
+
+  These features are experimental in this version.  More user feedback
+  will help to stabilize them.
+  Contributed by Alex Rozenman.
+
+** IELR(1) and canonical LR(1):
+
+  IELR(1) is a minimal LR(1) parser table generation algorithm.  That
+  is, given any context-free grammar, IELR(1) generates parser tables
+  with the full language-recognition power of canonical LR(1) but with
+  nearly the same number of parser states as LALR(1).  This reduction
+  in parser states is often an order of magnitude.  More importantly,
+  because canonical LR(1)'s extra parser states may contain duplicate
+  conflicts in the case of non-LR(1) grammars, the number of conflicts
+  for IELR(1) is often an order of magnitude less as well.  This can
+  significantly reduce the complexity of developing of a grammar.
+
+  Bison can now generate IELR(1) and canonical LR(1) parser tables in
+  place of its traditional LALR(1) parser tables, which remain the
+  default.  You can specify the type of parser tables in the grammar
+  file with these directives:
+
+    %define lr.type lalr
+    %define lr.type ielr
+    %define lr.type canonical-lr
+
+  The default-reduction optimization in the parser tables can also be
+  adjusted using "%define lr.default-reductions".  For details on both
+  of these features, see the new section "Tuning LR" in the Bison
+  manual.
+
+  These features are experimental.  More user feedback will help to
+  stabilize them.
+
+** LAC (Lookahead Correction) for syntax error handling
+
+  Contributed by Joel E. Denny.
+
+  Canonical LR, IELR, and LALR can suffer from a couple of problems
+  upon encountering a syntax error.  First, the parser might perform
+  additional parser stack reductions before discovering the syntax
+  error.  Such reductions can perform user semantic actions that are
+  unexpected because they are based on an invalid token, and they
+  cause error recovery to begin in a different syntactic context than
+  the one in which the invalid token was encountered.  Second, when
+  verbose error messages are enabled (with %error-verbose or the
+  obsolete "#define YYERROR_VERBOSE"), the expected token list in the
+  syntax error message can both contain invalid tokens and omit valid
+  tokens.
+
+  The culprits for the above problems are %nonassoc, default
+  reductions in inconsistent states, and parser state merging.  Thus,
+  IELR and LALR suffer the most.  Canonical LR can suffer only if
+  %nonassoc is used or if default reductions are enabled for
+  inconsistent states.
+
+  LAC is a new mechanism within the parsing algorithm that solves
+  these problems for canonical LR, IELR, and LALR without sacrificing
+  %nonassoc, default reductions, or state merging.  When LAC is in
+  use, canonical LR and IELR behave almost exactly the same for both
+  syntactically acceptable and syntactically unacceptable input.
+  While LALR still does not support the full language-recognition
+  power of canonical LR and IELR, LAC at least enables LALR's syntax
+  error handling to correctly reflect LALR's language-recognition
+  power.
+
+  Currently, LAC is only supported for deterministic parsers in C.
+  You can enable LAC with the following directive:
+
+    %define parse.lac full
+
+  See the new section "LAC" in the Bison manual for additional
+  details including a few caveats.
+
+  LAC is an experimental feature.  More user feedback will help to
+  stabilize it.
+
+** %define improvements:
+
+*** Can now be invoked via the command line:
+
+  Each of these command-line options
+
+    -D NAME[=VALUE]
+    --define=NAME[=VALUE]
+
+    -F NAME[=VALUE]
+    --force-define=NAME[=VALUE]
+
+  is equivalent to this grammar file declaration
+
+    %define NAME ["VALUE"]
+
+  except that the manner in which Bison processes multiple definitions
+  for the same NAME differs.  Most importantly, -F and --force-define
+  quietly override %define, but -D and --define do not.  For further
+  details, see the section "Bison Options" in the Bison manual.
+
+*** Variables renamed:
+
+  The following %define variables
+
+    api.push_pull
+    lr.keep_unreachable_states
+
+  have been renamed to
+
+    api.push-pull
+    lr.keep-unreachable-states
+
+  The old names are now deprecated but will be maintained indefinitely
+  for backward compatibility.
+
+*** Values no longer need to be quoted in the grammar file:
+
+  If a %define value is an identifier, it no longer needs to be placed
+  within quotations marks.  For example,
+
+    %define api.push-pull "push"
+
+  can be rewritten as
+
+    %define api.push-pull push
+
+*** Unrecognized variables are now errors not warnings.
+
+*** Multiple invocations for any variable is now an error not a warning.
+
+** Unrecognized %code qualifiers are now errors not warnings.
+
+** Character literals not of length one:
+
+  Previously, Bison quietly converted all character literals to length
+  one.  For example, without warning, Bison interpreted the operators in
+  the following grammar to be the same token:
+
+    exp: exp '++'
+       | exp '+' exp
+       ;
+
+  Bison now warns when a character literal is not of length one.  In
+  some future release, Bison will start reporting an error instead.
+
+** Destructor calls fixed for lookaheads altered in semantic actions:
+
+  Previously for deterministic parsers in C, if a user semantic action
+  altered yychar, the parser in some cases used the old yychar value to
+  determine which destructor to call for the lookahead upon a syntax
+  error or upon parser return.  This bug has been fixed.
+
+** C++ parsers use YYRHSLOC:
+
+  Similarly to the C parsers, the C++ parsers now define the YYRHSLOC
+  macro and use it in the default YYLLOC_DEFAULT.  You are encouraged
+  to use it.  If, for instance, your location structure has "first"
+  and "last" members, instead of
+
+    # define YYLLOC_DEFAULT(Current, Rhs, N)                             \
+      do                                                                 \
+        if (N)                                                           \
+          {                                                              \
+            (Current).first = (Rhs)[1].location.first;                   \
+            (Current).last  = (Rhs)[N].location.last;                    \
+          }                                                              \
+        else                                                             \
+          {                                                              \
+            (Current).first = (Current).last = (Rhs)[0].location.last;   \
+          }                                                              \
+      while (false)
+
+  use:
+
+    # define YYLLOC_DEFAULT(Current, Rhs, N)                             \
+      do                                                                 \
+        if (N)                                                           \
+          {                                                              \
+            (Current).first = YYRHSLOC (Rhs, 1).first;                   \
+            (Current).last  = YYRHSLOC (Rhs, N).last;                    \
+          }                                                              \
+        else                                                             \
+          {                                                              \
+            (Current).first = (Current).last = YYRHSLOC (Rhs, 0).last;   \
+          }                                                              \
+      while (false)
+
+** YYLLOC_DEFAULT in C++:
+
+  The default implementation of YYLLOC_DEFAULT used to be issued in
+  the header file.  It is now output in the implementation file, after
+  the user %code sections so that its #ifndef guard does not try to
+  override the user's YYLLOC_DEFAULT if provided.
+
+** YYFAIL now produces warnings and Java parsers no longer implement it:
+
+  YYFAIL has existed for many years as an undocumented feature of
+  deterministic parsers in C generated by Bison.  More recently, it was
+  a documented feature of Bison's experimental Java parsers.  As
+  promised in Bison 2.4.2's NEWS entry, any appearance of YYFAIL in a
+  semantic action now produces a deprecation warning, and Java parsers
+  no longer implement YYFAIL at all.  For further details, including a
+  discussion of how to suppress C preprocessor warnings about YYFAIL
+  being unused, see the Bison 2.4.2 NEWS entry.
+
+** Temporary hack for adding a semicolon to the user action:
+
+  Previously, Bison appended a semicolon to every user action for
+  reductions when the output language defaulted to C (specifically, when
+  neither %yacc, %language, %skeleton, or equivalent command-line
+  options were specified).  This allowed actions such as
+
+    exp: exp "+" exp { $$ = $1 + $3 };
+
+  instead of
+
+    exp: exp "+" exp { $$ = $1 + $3; };
+
+  As a first step in removing this misfeature, Bison now issues a
+  warning when it appends a semicolon.  Moreover, in cases where Bison
+  cannot easily determine whether a semicolon is needed (for example, an
+  action ending with a cpp directive or a braced compound initializer),
+  it no longer appends one.  Thus, the C compiler might now complain
+  about a missing semicolon where it did not before.  Future releases of
+  Bison will cease to append semicolons entirely.
+
+** Verbose syntax error message fixes:
+
+  When %error-verbose or the obsolete "#define YYERROR_VERBOSE" is
+  specified, syntax error messages produced by the generated parser
+  include the unexpected token as well as a list of expected tokens.
+  The effect of %nonassoc on these verbose messages has been corrected
+  in two ways, but a more complete fix requires LAC, described above:
+
+*** When %nonassoc is used, there can exist parser states that accept no
+    tokens, and so the parser does not always require a lookahead token
+    in order to detect a syntax error.  Because no unexpected token or
+    expected tokens can then be reported, the verbose syntax error
+    message described above is suppressed, and the parser instead
+    reports the simpler message, "syntax error".  Previously, this
+    suppression was sometimes erroneously triggered by %nonassoc when a
+    lookahead was actually required.  Now verbose messages are
+    suppressed only when all previous lookaheads have already been
+    shifted or discarded.
+
+*** Previously, the list of expected tokens erroneously included tokens
+    that would actually induce a syntax error because conflicts for them
+    were resolved with %nonassoc in the current parser state.  Such
+    tokens are now properly omitted from the list.
+
+*** Expected token lists are still often wrong due to state merging
+    (from LALR or IELR) and default reductions, which can both add
+    invalid tokens and subtract valid tokens.  Canonical LR almost
+    completely fixes this problem by eliminating state merging and
+    default reductions.  However, there is one minor problem left even
+    when using canonical LR and even after the fixes above.  That is,
+    if the resolution of a conflict with %nonassoc appears in a later
+    parser state than the one at which some syntax error is
+    discovered, the conflicted token is still erroneously included in
+    the expected token list.  Bison's new LAC implementation,
+    described above, eliminates this problem and the need for
+    canonical LR.  However, LAC is still experimental and is disabled
+    by default.
+
+** Java skeleton fixes:
+
+*** A location handling bug has been fixed.
+
+*** The top element of each of the value stack and location stack is now
+    cleared when popped so that it can be garbage collected.
+
+*** Parser traces now print the top element of the stack.
+
+** -W/--warnings fixes:
+
+*** Bison now properly recognizes the "no-" versions of categories:
+
+  For example, given the following command line, Bison now enables all
+  warnings except warnings for incompatibilities with POSIX Yacc:
+
+    bison -Wall,no-yacc gram.y
+
+*** Bison now treats S/R and R/R conflicts like other warnings:
+
+  Previously, conflict reports were independent of Bison's normal
+  warning system.  Now, Bison recognizes the warning categories
+  "conflicts-sr" and "conflicts-rr".  This change has important
+  consequences for the -W and --warnings command-line options.  For
+  example:
+
+    bison -Wno-conflicts-sr gram.y  # S/R conflicts not reported
+    bison -Wno-conflicts-rr gram.y  # R/R conflicts not reported
+    bison -Wnone            gram.y  # no conflicts are reported
+    bison -Werror           gram.y  # any conflict is an error
+
+  However, as before, if the %expect or %expect-rr directive is
+  specified, an unexpected number of conflicts is an error, and an
+  expected number of conflicts is not reported, so -W and --warning
+  then have no effect on the conflict report.
+
+*** The "none" category no longer disables a preceding "error":
+
+  For example, for the following command line, Bison now reports
+  errors instead of warnings for incompatibilities with POSIX Yacc:
+
+    bison -Werror,none,yacc gram.y
+
+*** The "none" category now disables all Bison warnings:
+
+  Previously, the "none" category disabled only Bison warnings for
+  which there existed a specific -W/--warning category.  However,
+  given the following command line, Bison is now guaranteed to
+  suppress all warnings:
+
+    bison -Wnone gram.y
+
+** Precedence directives can now assign token number 0:
+
+  Since Bison 2.3b, which restored the ability of precedence
+  directives to assign token numbers, doing so for token number 0 has
+  produced an assertion failure.  For example:
+
+    %left END 0
+
+  This bug has been fixed.
+
+* Changes in version 2.4.3 (2010-08-05):
+
+** Bison now obeys -Werror and --warnings=error for warnings about
+   grammar rules that are useless in the parser due to conflicts.
+
+** Problems with spawning M4 on at least FreeBSD 8 and FreeBSD 9 have
+   been fixed.
+
+** Failures in the test suite for GCC 4.5 have been fixed.
+
+** Failures in the test suite for some versions of Sun Studio C++ have
+   been fixed.
+
+** Contrary to Bison 2.4.2's NEWS entry, it has been decided that
+   warnings about undefined %prec identifiers will not be converted to
+   errors in Bison 2.5.  They will remain warnings, which should be
+   sufficient for POSIX while avoiding backward compatibility issues.
+
+** Minor documentation fixes.
+
+* Changes in version 2.4.2 (2010-03-20):
+
+** Some portability problems that resulted in failures and livelocks
+   in the test suite on some versions of at least Solaris, AIX, HP-UX,
+   RHEL4, and Tru64 have been addressed.  As a result, fatal Bison
+   errors should no longer cause M4 to report a broken pipe on the
+   affected platforms.
+
+** "%prec IDENTIFIER" requires IDENTIFIER to be defined separately.
+
+  POSIX specifies that an error be reported for any identifier that does
+  not appear on the LHS of a grammar rule and that is not defined by
+  %token, %left, %right, or %nonassoc.  Bison 2.3b and later lost this
+  error report for the case when an identifier appears only after a
+  %prec directive.  It is now restored.  However, for backward
+  compatibility with recent Bison releases, it is only a warning for
+  now.  In Bison 2.5 and later, it will return to being an error.
+  [Between the 2.4.2 and 2.4.3 releases, it was decided that this
+  warning will not be converted to an error in Bison 2.5.]
+
+** Detection of GNU M4 1.4.6 or newer during configure is improved.
+
+** Warnings from gcc's -Wundef option about undefined YYENABLE_NLS,
+   YYLTYPE_IS_TRIVIAL, and __STRICT_ANSI__ in C/C++ parsers are now
+   avoided.
+
+** %code is now a permanent feature.
+
+  A traditional Yacc prologue directive is written in the form:
+
+    %{CODE%}
+
+  To provide a more flexible alternative, Bison 2.3b introduced the
+  %code directive with the following forms for C/C++:
+
+    %code          {CODE}
+    %code requires {CODE}
+    %code provides {CODE}
+    %code top      {CODE}
+
+  These forms are now considered permanent features of Bison.  See the
+  %code entries in the section "Bison Declaration Summary" in the Bison
+  manual for a summary of their functionality.  See the section
+  "Prologue Alternatives" for a detailed discussion including the
+  advantages of %code over the traditional Yacc prologue directive.
+
+  Bison's Java feature as a whole including its current usage of %code
+  is still considered experimental.
+
+** YYFAIL is deprecated and will eventually be removed.
+
+  YYFAIL has existed for many years as an undocumented feature of
+  deterministic parsers in C generated by Bison.  Previously, it was
+  documented for Bison's experimental Java parsers.  YYFAIL is no longer
+  documented for Java parsers and is formally deprecated in both cases.
+  Users are strongly encouraged to migrate to YYERROR, which is
+  specified by POSIX.
+
+  Like YYERROR, you can invoke YYFAIL from a semantic action in order to
+  induce a syntax error.  The most obvious difference from YYERROR is
+  that YYFAIL will automatically invoke yyerror to report the syntax
+  error so that you don't have to.  However, there are several other
+  subtle differences between YYERROR and YYFAIL, and YYFAIL suffers from
+  inherent flaws when %error-verbose or "#define YYERROR_VERBOSE" is
+  used.  For a more detailed discussion, see:
+
+    http://lists.gnu.org/archive/html/bison-patches/2009-12/msg00024.html
+
+  The upcoming Bison 2.5 will remove YYFAIL from Java parsers, but
+  deterministic parsers in C will continue to implement it.  However,
+  because YYFAIL is already flawed, it seems futile to try to make new
+  Bison features compatible with it.  Thus, during parser generation,
+  Bison 2.5 will produce a warning whenever it discovers YYFAIL in a
+  rule action.  In a later release, YYFAIL will be disabled for
+  %error-verbose and "#define YYERROR_VERBOSE".  Eventually, YYFAIL will
+  be removed altogether.
+
+  There exists at least one case where Bison 2.5's YYFAIL warning will
+  be a false positive.  Some projects add phony uses of YYFAIL and other
+  Bison-defined macros for the sole purpose of suppressing C
+  preprocessor warnings (from GCC cpp's -Wunused-macros, for example).
+  To avoid Bison's future warning, such YYFAIL uses can be moved to the
+  epilogue (that is, after the second "%%") in the Bison input file.  In
+  this release (2.4.2), Bison already generates its own code to suppress
+  C preprocessor warnings for YYFAIL, so projects can remove their own
+  phony uses of YYFAIL if compatibility with Bison releases prior to
+  2.4.2 is not necessary.
+
+** Internationalization.
+
+  Fix a regression introduced in Bison 2.4: Under some circumstances,
+  message translations were not installed although supported by the
+  host system.
+
+* Changes in version 2.4.1 (2008-12-11):
+
+** In the GLR defines file, unexpanded M4 macros in the yylval and yylloc
+   declarations have been fixed.
+
+** Temporary hack for adding a semicolon to the user action.
+
+  Bison used to prepend a trailing semicolon at the end of the user
+  action for reductions.  This allowed actions such as
+
+    exp: exp "+" exp { $$ = $1 + $3 };
+
+  instead of
+
+    exp: exp "+" exp { $$ = $1 + $3; };
+
+  Some grammars still depend on this "feature".  Bison 2.4.1 restores
+  the previous behavior in the case of C output (specifically, when
+  neither %language or %skeleton or equivalent command-line options
+  are used) to leave more time for grammars depending on the old
+  behavior to be adjusted.  Future releases of Bison will disable this
+  feature.
+
+** A few minor improvements to the Bison manual.
+
+* Changes in version 2.4 (2008-11-02):
+
+** %language is an experimental feature.
+
+  We first introduced this feature in test release 2.3b as a cleaner
+  alternative to %skeleton.  Since then, we have discussed the possibility of
+  modifying its effect on Bison's output file names.  Thus, in this release,
+  we consider %language to be an experimental feature that will likely evolve
+  in future releases.
+
+** Forward compatibility with GNU M4 has been improved.
+
+** Several bugs in the C++ skeleton and the experimental Java skeleton have been
+  fixed.
+
+* Changes in version 2.3b (2008-05-27):
+
+** The quotes around NAME that used to be required in the following directive
+  are now deprecated:
+
+    %define NAME "VALUE"
+
+** The directive "%pure-parser" is now deprecated in favor of:
+
+    %define api.pure
+
+  which has the same effect except that Bison is more careful to warn about
+  unreasonable usage in the latter case.
+
+** Push Parsing
+
+  Bison can now generate an LALR(1) parser in C with a push interface.  That
+  is, instead of invoking "yyparse", which pulls tokens from "yylex", you can
+  push one token at a time to the parser using "yypush_parse", which will
+  return to the caller after processing each token.  By default, the push
+  interface is disabled.  Either of the following directives will enable it:
+
+    %define api.push_pull "push" // Just push; does not require yylex.
+    %define api.push_pull "both" // Push and pull; requires yylex.
+
+  See the new section "A Push Parser" in the Bison manual for details.
+
+  The current push parsing interface is experimental and may evolve.  More user
+  feedback will help to stabilize it.
+
+** The -g and --graph options now output graphs in Graphviz DOT format,
+  not VCG format.  Like --graph, -g now also takes an optional FILE argument
+  and thus cannot be bundled with other short options.
+
+** Java
+
+  Bison can now generate an LALR(1) parser in Java.  The skeleton is
+  "data/lalr1.java".  Consider using the new %language directive instead of
+  %skeleton to select it.
+
+  See the new section "Java Parsers" in the Bison manual for details.
+
+  The current Java interface is experimental and may evolve.  More user
+  feedback will help to stabilize it.
+  Contributed by Paolo Bonzini.
+
+** %language
+
+  This new directive specifies the programming language of the generated
+  parser, which can be C (the default), C++, or Java.  Besides the skeleton
+  that Bison uses, the directive affects the names of the generated files if
+  the grammar file's name ends in ".y".
+
+** XML Automaton Report
+
+  Bison can now generate an XML report of the LALR(1) automaton using the new
+  "--xml" option.  The current XML schema is experimental and may evolve.  More
+  user feedback will help to stabilize it.
+  Contributed by Wojciech Polak.
+
+** The grammar file may now specify the name of the parser header file using
+  %defines.  For example:
+
+    %defines "parser.h"
+
+** When reporting useless rules, useless nonterminals, and unused terminals,
+  Bison now employs the terms "useless in grammar" instead of "useless",
+  "useless in parser" instead of "never reduced", and "unused in grammar"
+  instead of "unused".
+
+** Unreachable State Removal
+
+  Previously, Bison sometimes generated parser tables containing unreachable
+  states.  A state can become unreachable during conflict resolution if Bison
+  disables a shift action leading to it from a predecessor state.  Bison now:
+
+    1. Removes unreachable states.
+
+    2. Does not report any conflicts that appeared in unreachable states.
+       WARNING: As a result, you may need to update %expect and %expect-rr
+       directives in existing grammar files.
+
+    3. For any rule used only in such states, Bison now reports the rule as
+       "useless in parser due to conflicts".
+
+  This feature can be disabled with the following directive:
+
+    %define lr.keep_unreachable_states
+
+  See the %define entry in the "Bison Declaration Summary" in the Bison manual
+  for further discussion.
+
+** Lookahead Set Correction in the ".output" Report
+
+  When instructed to generate a ".output" file including lookahead sets
+  (using "--report=lookahead", for example), Bison now prints each reduction's
+  lookahead set only next to the associated state's one item that (1) is
+  associated with the same rule as the reduction and (2) has its dot at the end
+  of its RHS.  Previously, Bison also erroneously printed the lookahead set
+  next to all of the state's other items associated with the same rule.  This
+  bug affected only the ".output" file and not the generated parser source
+  code.
+
+** --report-file=FILE is a new option to override the default ".output" file
+  name.
+
+** The "=" that used to be required in the following directives is now
+  deprecated:
+
+    %file-prefix "parser"
+    %name-prefix "c_"
+    %output "parser.c"
+
+** An Alternative to "%{...%}" -- "%code QUALIFIER {CODE}"
+
+  Bison 2.3a provided a new set of directives as a more flexible alternative to
+  the traditional Yacc prologue blocks.  Those have now been consolidated into
+  a single %code directive with an optional qualifier field, which identifies
+  the purpose of the code and thus the location(s) where Bison should generate
+  it:
+
+    1. "%code          {CODE}" replaces "%after-header  {CODE}"
+    2. "%code requires {CODE}" replaces "%start-header  {CODE}"
+    3. "%code provides {CODE}" replaces "%end-header    {CODE}"
+    4. "%code top      {CODE}" replaces "%before-header {CODE}"
+
+  See the %code entries in section "Bison Declaration Summary" in the Bison
+  manual for a summary of the new functionality.  See the new section "Prologue
+  Alternatives" for a detailed discussion including the advantages of %code
+  over the traditional Yacc prologues.
+
+  The prologue alternatives are experimental.  More user feedback will help to
+  determine whether they should become permanent features.
+
+** Revised warning: unset or unused mid-rule values
+
+  Since Bison 2.2, Bison has warned about mid-rule values that are set but not
+  used within any of the actions of the parent rule.  For example, Bison warns
+  about unused $2 in:
+
+    exp: '1' { $$ = 1; } '+' exp { $$ = $1 + $4; };
+
+  Now, Bison also warns about mid-rule values that are used but not set.  For
+  example, Bison warns about unset $$ in the mid-rule action in:
+
+    exp: '1' { $1 = 1; } '+' exp { $$ = $2 + $4; };
+
+  However, Bison now disables both of these warnings by default since they
+  sometimes prove to be false alarms in existing grammars employing the Yacc
+  constructs $0 or $-N (where N is some positive integer).
+
+  To enable these warnings, specify the option "--warnings=midrule-values" or
+  "-W", which is a synonym for "--warnings=all".
+
+** Default %destructor or %printer with "<*>" or "<>"
+
+  Bison now recognizes two separate kinds of default %destructor's and
+  %printer's:
+
+    1. Place "<*>" in a %destructor/%printer symbol list to define a default
+       %destructor/%printer for all grammar symbols for which you have formally
+       declared semantic type tags.
+
+    2. Place "<>" in a %destructor/%printer symbol list to define a default
+       %destructor/%printer for all grammar symbols without declared semantic
+       type tags.
+
+  Bison no longer supports the "%symbol-default" notation from Bison 2.3a.
+  "<*>" and "<>" combined achieve the same effect with one exception: Bison no
+  longer applies any %destructor to a mid-rule value if that mid-rule value is
+  not actually ever referenced using either $$ or $n in a semantic action.
+
+  The default %destructor's and %printer's are experimental.  More user
+  feedback will help to determine whether they should become permanent
+  features.
+
+  See the section "Freeing Discarded Symbols" in the Bison manual for further
+  details.
+
+** %left, %right, and %nonassoc can now declare token numbers.  This is required
+  by POSIX.  However, see the end of section "Operator Precedence" in the Bison
+  manual for a caveat concerning the treatment of literal strings.
+
+** The nonfunctional --no-parser, -n, and %no-parser options have been
+  completely removed from Bison.
+
+* Changes in version 2.3a, 2006-09-13:
+
+** Instead of %union, you can define and use your own union type
+  YYSTYPE if your grammar contains at least one <type> tag.
+  Your YYSTYPE need not be a macro; it can be a typedef.
+  This change is for compatibility with other Yacc implementations,
+  and is required by POSIX.
+
+** Locations columns and lines start at 1.
+  In accordance with the GNU Coding Standards and Emacs.
+
+** You may now declare per-type and default %destructor's and %printer's:
+
+  For example:
+
+    %union { char *string; }
+    %token <string> STRING1
+    %token <string> STRING2
+    %type  <string> string1
+    %type  <string> string2
+    %union { char character; }
+    %token <character> CHR
+    %type  <character> chr
+    %destructor { free ($$); } %symbol-default
+    %destructor { free ($$); printf ("%d", @$.first_line); } STRING1 string1
+    %destructor { } <character>
+
+  guarantees that, when the parser discards any user-defined symbol that has a
+  semantic type tag other than "<character>", it passes its semantic value to
+  "free".  However, when the parser discards a "STRING1" or a "string1", it
+  also prints its line number to "stdout".  It performs only the second
+  "%destructor" in this case, so it invokes "free" only once.
+
+  [Although we failed to mention this here in the 2.3a release, the default
+  %destructor's and %printer's were experimental, and they were rewritten in
+  future versions.]
+
+** Except for LALR(1) parsers in C with POSIX Yacc emulation enabled (with "-y",
+  "--yacc", or "%yacc"), Bison no longer generates #define statements for
+  associating token numbers with token names.  Removing the #define statements
+  helps to sanitize the global namespace during preprocessing, but POSIX Yacc
+  requires them.  Bison still generates an enum for token names in all cases.
+
+** Handling of traditional Yacc prologue blocks is now more consistent but
+  potentially incompatible with previous releases of Bison.
+
+  As before, you declare prologue blocks in your grammar file with the
+  "%{ ... %}" syntax.  To generate the pre-prologue, Bison concatenates all
+  prologue blocks that you've declared before the first %union.  To generate
+  the post-prologue, Bison concatenates all prologue blocks that you've
+  declared after the first %union.
+
+  Previous releases of Bison inserted the pre-prologue into both the header
+  file and the code file in all cases except for LALR(1) parsers in C.  In the
+  latter case, Bison inserted it only into the code file.  For parsers in C++,
+  the point of insertion was before any token definitions (which associate
+  token numbers with names).  For parsers in C, the point of insertion was
+  after the token definitions.
+
+  Now, Bison never inserts the pre-prologue into the header file.  In the code
+  file, it always inserts it before the token definitions.
+
+** Bison now provides a more flexible alternative to the traditional Yacc
+  prologue blocks: %before-header, %start-header, %end-header, and
+  %after-header.
+
+  For example, the following declaration order in the grammar file reflects the
+  order in which Bison will output these code blocks.  However, you are free to
+  declare these code blocks in your grammar file in whatever order is most
+  convenient for you:
+
+    %before-header {
+      /* Bison treats this block like a pre-prologue block: it inserts it into
+       * the code file before the contents of the header file.  It does *not*
+       * insert it into the header file.  This is a good place to put
+       * #include's that you want at the top of your code file.  A common
+       * example is '#include "system.h"'.  */
+    }
+    %start-header {
+      /* Bison inserts this block into both the header file and the code file.
+       * In both files, the point of insertion is before any Bison-generated
+       * token, semantic type, location type, and class definitions.  This is a
+       * good place to define %union dependencies, for example.  */
+    }
+    %union {
+      /* Unlike the traditional Yacc prologue blocks, the output order for the
+       * new %*-header blocks is not affected by their declaration position
+       * relative to any %union in the grammar file.  */
+    }
+    %end-header {
+      /* Bison inserts this block into both the header file and the code file.
+       * In both files, the point of insertion is after the Bison-generated
+       * definitions.  This is a good place to declare or define public
+       * functions or data structures that depend on the Bison-generated
+       * definitions.  */
+    }
+    %after-header {
+      /* Bison treats this block like a post-prologue block: it inserts it into
+       * the code file after the contents of the header file.  It does *not*
+       * insert it into the header file.  This is a good place to declare or
+       * define internal functions or data structures that depend on the
+       * Bison-generated definitions.  */
+    }
+
+  If you have multiple occurrences of any one of the above declarations, Bison
+  will concatenate the contents in declaration order.
+
+  [Although we failed to mention this here in the 2.3a release, the prologue
+  alternatives were experimental, and they were rewritten in future versions.]
+
+** The option "--report=look-ahead" has been changed to "--report=lookahead".
+  The old spelling still works, but is not documented and may be removed
+  in a future release.
+
+* Changes in version 2.3, 2006-06-05:
+
+** GLR grammars should now use "YYRECOVERING ()" instead of "YYRECOVERING",
+  for compatibility with LALR(1) grammars.
+
+** It is now documented that any definition of YYSTYPE or YYLTYPE should
+  be to a type name that does not contain parentheses or brackets.
+
+* Changes in version 2.2, 2006-05-19:
+
+** The distribution terms for all Bison-generated parsers now permit
+  using the parsers in nonfree programs.  Previously, this permission
+  was granted only for Bison-generated LALR(1) parsers in C.
+
+** %name-prefix changes the namespace name in C++ outputs.
+
+** The C++ parsers export their token_type.
+
+** Bison now allows multiple %union declarations, and concatenates
+  their contents together.
+
+** New warning: unused values
+  Right-hand side symbols whose values are not used are reported,
+  if the symbols have destructors.  For instance:
+
+     exp: exp "?" exp ":" exp { $1 ? $1 : $3; }
+        | exp "+" exp
+        ;
+
+  will trigger a warning about $$ and $5 in the first rule, and $3 in
+  the second ($1 is copied to $$ by the default rule).  This example
+  most likely contains three errors, and could be rewritten as:
+
+     exp: exp "?" exp ":" exp
+            { $$ = $1 ? $3 : $5; free ($1 ? $5 : $3); free ($1); }
+        | exp "+" exp
+            { $$ = $1 ? $1 : $3; if ($1) free ($3); }
+        ;
+
+  However, if the original actions were really intended, memory leaks
+  and all, the warnings can be suppressed by letting Bison believe the
+  values are used, e.g.:
+
+     exp: exp "?" exp ":" exp { $1 ? $1 : $3; (void) ($$, $5); }
+        | exp "+" exp         { $$ = $1; (void) $3; }
+        ;
+
+  If there are mid-rule actions, the warning is issued if no action
+  uses it.  The following triggers no warning: $1 and $3 are used.
+
+     exp: exp { push ($1); } '+' exp { push ($3); sum (); };
+
+  The warning is intended to help catching lost values and memory leaks.
+  If a value is ignored, its associated memory typically is not reclaimed.
+
+** %destructor vs. YYABORT, YYACCEPT, and YYERROR.
+  Destructors are now called when user code invokes YYABORT, YYACCEPT,
+  and YYERROR, for all objects on the stack, other than objects
+  corresponding to the right-hand side of the current rule.
+
+** %expect, %expect-rr
+  Incorrect numbers of expected conflicts are now actual errors,
+  instead of warnings.
+
+** GLR, YACC parsers.
+  The %parse-params are available in the destructors (and the
+  experimental printers) as per the documentation.
+
+** Bison now warns if it finds a stray "$" or "@" in an action.
+
+** %require "VERSION"
+  This specifies that the grammar file depends on features implemented
+  in Bison version VERSION or higher.
+
+** lalr1.cc: The token and value types are now class members.
+  The tokens were defined as free form enums and cpp macros.  YYSTYPE
+  was defined as a free form union.  They are now class members:
+  tokens are enumerations of the "yy::parser::token" struct, and the
+  semantic values have the "yy::parser::semantic_type" type.
+
+  If you do not want or can update to this scheme, the directive
+  '%define "global_tokens_and_yystype" "1"' triggers the global
+  definition of tokens and YYSTYPE.  This change is suitable both
+  for previous releases of Bison, and this one.
+
+  If you wish to update, then make sure older version of Bison will
+  fail using '%require "2.2"'.
+
+** DJGPP support added.
+
+* Changes in version 2.1, 2005-09-16:
+
+** The C++ lalr1.cc skeleton supports %lex-param.
+
+** Bison-generated parsers now support the translation of diagnostics like
+  "syntax error" into languages other than English.  The default
+  language is still English.  For details, please see the new
+  Internationalization section of the Bison manual.  Software
+  distributors should also see the new PACKAGING file.  Thanks to
+  Bruno Haible for this new feature.
+
+** Wording in the Bison-generated parsers has been changed slightly to
+  simplify translation.  In particular, the message "memory exhausted"
+  has replaced "parser stack overflow", as the old message was not
+  always accurate for modern Bison-generated parsers.
+
+** Destructors are now called when the parser aborts, for all symbols left
+  behind on the stack.  Also, the start symbol is now destroyed after a
+  successful parse.  In both cases, the behavior was formerly inconsistent.
+
+** When generating verbose diagnostics, Bison-generated parsers no longer
+  quote the literal strings associated with tokens.  For example, for
+  a syntax error associated with '%token NUM "number"' they might
+  print 'syntax error, unexpected number' instead of 'syntax error,
+  unexpected "number"'.
+
+* Changes in version 2.0, 2004-12-25:
+
+** Possibly-incompatible changes
+
+  - Bison-generated parsers no longer default to using the alloca function
+    (when available) to extend the parser stack, due to widespread
+    problems in unchecked stack-overflow detection.  You can "#define
+    YYSTACK_USE_ALLOCA 1" to require the use of alloca, but please read
+    the manual to determine safe values for YYMAXDEPTH in that case.
+
+  - Error token location.
+    During error recovery, the location of the syntax error is updated
+    to cover the whole sequence covered by the error token: it includes
+    the shifted symbols thrown away during the first part of the error
+    recovery, and the lookahead rejected during the second part.
+
+  - Semicolon changes:
+    . Stray semicolons are no longer allowed at the start of a grammar.
+    . Semicolons are now required after in-grammar declarations.
+
+  - Unescaped newlines are no longer allowed in character constants or
+    string literals.  They were never portable, and GCC 3.4.0 has
+    dropped support for them.  Better diagnostics are now generated if
+    forget a closing quote.
+
+  - NUL bytes are no longer allowed in Bison string literals, unfortunately.
+
+** New features
+
+  - GLR grammars now support locations.
+
+  - New directive: %initial-action.
+    This directive allows the user to run arbitrary code (including
+    initializing @$) from yyparse before parsing starts.
+
+  - A new directive "%expect-rr N" specifies the expected number of
+    reduce/reduce conflicts in GLR parsers.
+
+  - %token numbers can now be hexadecimal integers, e.g., "%token FOO 0x12d".
+    This is a GNU extension.
+
+  - The option "--report=lookahead" was changed to "--report=look-ahead".
+    [However, this was changed back after 2.3.]
+
+  - Experimental %destructor support has been added to lalr1.cc.
+
+  - New configure option --disable-yacc, to disable installation of the
+    yacc command and -ly library introduced in 1.875 for POSIX conformance.
+
+** Bug fixes
+
+  - For now, %expect-count violations are now just warnings, not errors.
+    This is for compatibility with Bison 1.75 and earlier (when there are
+    reduce/reduce conflicts) and with Bison 1.30 and earlier (when there
+    are too many or too few shift/reduce conflicts).  However, in future
+    versions of Bison we plan to improve the %expect machinery so that
+    these violations will become errors again.
+
+  - Within Bison itself, numbers (e.g., goto numbers) are no longer
+    arbitrarily limited to 16-bit counts.
+
+  - Semicolons are now allowed before "|" in grammar rules, as POSIX requires.
+
+* Changes in version 1.875, 2003-01-01:
+
+** The documentation license has been upgraded to version 1.2
+  of the GNU Free Documentation License.
+
+** syntax error processing
+
+  - In Yacc-style parsers YYLLOC_DEFAULT is now used to compute error
+    locations too.  This fixes bugs in error-location computation.
+
+  - %destructor
+    It is now possible to reclaim the memory associated to symbols
+    discarded during error recovery.  This feature is still experimental.
+
+  - %error-verbose
+    This new directive is preferred over YYERROR_VERBOSE.
+
+  - #defining yyerror to steal internal variables is discouraged.
+    It is not guaranteed to work forever.
+
+** POSIX conformance
+
+  - Semicolons are once again optional at the end of grammar rules.
+    This reverts to the behavior of Bison 1.33 and earlier, and improves
+    compatibility with Yacc.
+
+  - "parse error" -> "syntax error"
+    Bison now uniformly uses the term "syntax error"; formerly, the code
+    and manual sometimes used the term "parse error" instead.  POSIX
+    requires "syntax error" in diagnostics, and it was thought better to
+    be consistent.
+
+  - The documentation now emphasizes that yylex and yyerror must be
+    declared before use.  C99 requires this.
+
+  - Bison now parses C99 lexical constructs like UCNs and
+    backslash-newline within C escape sequences, as POSIX 1003.1-2001 requires.
+
+  - File names are properly escaped in C output.  E.g., foo\bar.y is
+    output as "foo\\bar.y".
+
+  - Yacc command and library now available
+    The Bison distribution now installs a "yacc" command, as POSIX requires.
+    Also, Bison now installs a small library liby.a containing
+    implementations of Yacc-compatible yyerror and main functions.
+    This library is normally not useful, but POSIX requires it.
+
+  - Type clashes now generate warnings, not errors.
+
+  - If the user does not define YYSTYPE as a macro, Bison now declares it
+    using typedef instead of defining it as a macro.
+    For consistency, YYLTYPE is also declared instead of defined.
+
+** Other compatibility issues
+
+  - %union directives can now have a tag before the "{", e.g., the
+    directive "%union foo {...}" now generates the C code
+    "typedef union foo { ... } YYSTYPE;"; this is for Yacc compatibility.
+    The default union tag is "YYSTYPE", for compatibility with Solaris 9 Yacc.
+    For consistency, YYLTYPE's struct tag is now "YYLTYPE" not "yyltype".
+    This is for compatibility with both Yacc and Bison 1.35.
+
+  - ";" is output before the terminating "}" of an action, for
+    compatibility with Bison 1.35.
+
+  - Bison now uses a Yacc-style format for conflict reports, e.g.,
+    "conflicts: 2 shift/reduce, 1 reduce/reduce".
+
+  - "yystype" and "yyltype" are now obsolescent macros instead of being
+    typedefs or tags; they are no longer documented and are planned to be
+    withdrawn in a future release.
+
+** GLR parser notes
+
+  - GLR and inline
+    Users of Bison have to decide how they handle the portability of the
+    C keyword "inline".
+
+  - "parsing stack overflow..." -> "parser stack overflow"
+    GLR parsers now report "parser stack overflow" as per the Bison manual.
+
+** %parse-param and %lex-param
+  The macros YYPARSE_PARAM and YYLEX_PARAM provide a means to pass
+  additional context to yyparse and yylex.  They suffer from several
+  shortcomings:
+
+  - a single argument only can be added,
+  - their types are weak (void *),
+  - this context is not passed to ancillary functions such as yyerror,
+  - only yacc.c parsers support them.
+
+  The new %parse-param/%lex-param directives provide a more precise control.
+  For instance:
+
+    %parse-param {int *nastiness}
+    %lex-param   {int *nastiness}
+    %parse-param {int *randomness}
+
+  results in the following signatures:
+
+    int yylex   (int *nastiness);
+    int yyparse (int *nastiness, int *randomness);
+
+  or, if both %pure-parser and %locations are used:
+
+    int yylex   (YYSTYPE *lvalp, YYLTYPE *llocp, int *nastiness);
+    int yyparse (int *nastiness, int *randomness);
+
+** Bison now warns if it detects conflicting outputs to the same file,
+  e.g., it generates a warning for "bison -d -o foo.h foo.y" since
+  that command outputs both code and header to foo.h.
+
+** #line in output files
+  - --no-line works properly.
+
+** Bison can no longer be built by a K&R C compiler; it requires C89 or
+  later to be built.  This change originally took place a few versions
+  ago, but nobody noticed until we recently asked someone to try
+  building Bison with a K&R C compiler.
+
+* Changes in version 1.75, 2002-10-14:
+
+** Bison should now work on 64-bit hosts.
+
+** Indonesian translation thanks to Tedi Heriyanto.
+
+** GLR parsers
+  Fix spurious parse errors.
+
+** Pure parsers
+  Some people redefine yyerror to steal yyparse' private variables.
+  Reenable this trick until an official feature replaces it.
+
+** Type Clashes
+  In agreement with POSIX and with other Yaccs, leaving a default
+  action is valid when $$ is untyped, and $1 typed:
+
+        untyped: ... typed;
+
+  but the converse remains an error:
+
+        typed: ... untyped;
+
+** Values of mid-rule actions
+  The following code:
+
+        foo: { ... } { $$ = $1; } ...
+
+  was incorrectly rejected: $1 is defined in the second mid-rule
+  action, and is equal to the $$ of the first mid-rule action.
+
+* Changes in version 1.50, 2002-10-04:
+
+** GLR parsing
+  The declaration
+     %glr-parser
+  causes Bison to produce a Generalized LR (GLR) parser, capable of handling
+  almost any context-free grammar, ambiguous or not.  The new declarations
+  %dprec and %merge on grammar rules allow parse-time resolution of
+  ambiguities.  Contributed by Paul Hilfinger.
+
+  Unfortunately Bison 1.50 does not work properly on 64-bit hosts
+  like the Alpha, so please stick to 32-bit hosts for now.
+
+** Output Directory
+  When not in Yacc compatibility mode, when the output file was not
+  specified, running "bison foo/bar.y" created "foo/bar.c".  It
+  now creates "bar.c".
+
+** Undefined token
+  The undefined token was systematically mapped to 2 which prevented
+  the use of 2 by the user.  This is no longer the case.
+
+** Unknown token numbers
+  If yylex returned an out of range value, yyparse could die.  This is
+  no longer the case.
+
+** Error token
+  According to POSIX, the error token must be 256.
+  Bison extends this requirement by making it a preference: *if* the
+  user specified that one of her tokens is numbered 256, then error
+  will be mapped onto another number.
+
+** Verbose error messages
+  They no longer report "..., expecting error or..." for states where
+  error recovery is possible.
+
+** End token
+  Defaults to "$end" instead of "$".
+
+** Error recovery now conforms to documentation and to POSIX
+  When a Bison-generated parser encounters a syntax error, it now pops
+  the stack until it finds a state that allows shifting the error
+  token.  Formerly, it popped the stack until it found a state that
+  allowed some non-error action other than a default reduction on the
+  error token.  The new behavior has long been the documented behavior,
+  and has long been required by POSIX.  For more details, please see
+  Paul Eggert, "Reductions during Bison error handling" (2002-05-20)
+  <http://lists.gnu.org/archive/html/bug-bison/2002-05/msg00038.html>.
+
+** Traces
+  Popped tokens and nonterminals are now reported.
+
+** Larger grammars
+  Larger grammars are now supported (larger token numbers, larger grammar
+  size (= sum of the LHS and RHS lengths), larger LALR tables).
+  Formerly, many of these numbers ran afoul of 16-bit limits;
+  now these limits are 32 bits on most hosts.
+
+** Explicit initial rule
+  Bison used to play hacks with the initial rule, which the user does
+  not write.  It is now explicit, and visible in the reports and
+  graphs as rule 0.
+
+** Useless rules
+  Before, Bison reported the useless rules, but, although not used,
+  included them in the parsers.  They are now actually removed.
+
+** Useless rules, useless nonterminals
+  They are now reported, as a warning, with their locations.
+
+** Rules never reduced
+  Rules that can never be reduced because of conflicts are now
+  reported.
+
+** Incorrect "Token not used"
+  On a grammar such as
+
+    %token useless useful
+    %%
+    exp: '0' %prec useful;
+
+  where a token was used to set the precedence of the last rule,
+  bison reported both "useful" and "useless" as useless tokens.
+
+** Revert the C++ namespace changes introduced in 1.31
+  as they caused too many portability hassles.
+
+** Default locations
+  By an accident of design, the default computation of @$ was
+  performed after another default computation was performed: @$ = @1.
+  The latter is now removed: YYLLOC_DEFAULT is fully responsible of
+  the computation of @$.
+
+** Token end-of-file
+  The token end of file may be specified by the user, in which case,
+  the user symbol is used in the reports, the graphs, and the verbose
+  error messages instead of "$end", which remains being the default.
+  For instance
+    %token MYEOF 0
+  or
+    %token MYEOF 0 "end of file"
+
+** Semantic parser
+  This old option, which has been broken for ages, is removed.
+
+** New translations
+  Brazilian Portuguese, thanks to Alexandre Folle de Menezes.
+  Croatian, thanks to Denis Lackovic.
+
+** Incorrect token definitions
+  When given
+    %token 'a' "A"
+  bison used to output
+    #define 'a' 65
+
+** Token definitions as enums
+  Tokens are output both as the traditional #define's, and, provided
+  the compiler supports ANSI C or is a C++ compiler, as enums.
+  This lets debuggers display names instead of integers.
+
+** Reports
+  In addition to --verbose, bison supports --report=THINGS, which
+  produces additional information:
+  - itemset
+    complete the core item sets with their closure
+  - lookahead [changed to "look-ahead" in 1.875e through 2.3, but changed back]
+    explicitly associate lookahead tokens to items
+  - solved
+    describe shift/reduce conflicts solving.
+    Bison used to systematically output this information on top of
+    the report.  Solved conflicts are now attached to their states.
+
+** Type clashes
+  Previous versions don't complain when there is a type clash on
+  the default action if the rule has a mid-rule action, such as in:
+
+    %type <foo> bar
+    %%
+    bar: '0' {} '0';
+
+  This is fixed.
+
+** GNU M4 is now required when using Bison.
+
+* Changes in version 1.35, 2002-03-25:
+
+** C Skeleton
+  Some projects use Bison's C parser with C++ compilers, and define
+  YYSTYPE as a class.  The recent adjustment of C parsers for data
+  alignment and 64 bit architectures made this impossible.
+
+  Because for the time being no real solution for C++ parser
+  generation exists, kludges were implemented in the parser to
+  maintain this use.  In the future, when Bison has C++ parsers, this
+  kludge will be disabled.
+
+  This kludge also addresses some C++ problems when the stack was
+  extended.
+
+* Changes in version 1.34, 2002-03-12:
+
+** File name clashes are detected
+  $ bison foo.y -d -o foo.x
+  fatal error: header and parser would both be named "foo.x"
+
+** A missing ";" at the end of a rule triggers a warning
+  In accordance with POSIX, and in agreement with other
+  Yacc implementations, Bison will mandate this semicolon in the near
+  future.  This eases the implementation of a Bison parser of Bison
+  grammars by making this grammar LALR(1) instead of LR(2).  To
+  facilitate the transition, this release introduces a warning.
+
+** Revert the C++ namespace changes introduced in 1.31, as they caused too
+  many portability hassles.
+
+** DJGPP support added.
+
+** Fix test suite portability problems.
+
+* Changes in version 1.33, 2002-02-07:
+
+** Fix C++ issues
+  Groff could not be compiled for the definition of size_t was lacking
+  under some conditions.
+
+** Catch invalid @n
+  As is done with $n.
+
+* Changes in version 1.32, 2002-01-23:
+
+** Fix Yacc output file names
+
+** Portability fixes
+
+** Italian, Dutch translations
+
+* Changes in version 1.31, 2002-01-14:
+
+** Many Bug Fixes
+
+** GNU Gettext and %expect
+  GNU Gettext asserts 10 s/r conflicts, but there are 7.  Now that
+  Bison dies on incorrect %expectations, we fear there will be
+  too many bug reports for Gettext, so _for the time being_, %expect
+  does not trigger an error when the input file is named "plural.y".
+
+** Use of alloca in parsers
+  If YYSTACK_USE_ALLOCA is defined to 0, then the parsers will use
+  malloc exclusively.  Since 1.29, but was not NEWS'ed.
+
+  alloca is used only when compiled with GCC, to avoid portability
+  problems as on AIX.
+
+** yyparse now returns 2 if memory is exhausted; formerly it dumped core.
+
+** When the generated parser lacks debugging code, YYDEBUG is now 0
+  (as POSIX requires) instead of being undefined.
+
+** User Actions
+  Bison has always permitted actions such as { $$ = $1 }: it adds the
+  ending semicolon.  Now if in Yacc compatibility mode, the semicolon
+  is no longer output: one has to write { $$ = $1; }.
+
+** Better C++ compliance
+  The output parsers try to respect C++ namespaces.
+  [This turned out to be a failed experiment, and it was reverted later.]
+
+** Reduced Grammars
+  Fixed bugs when reporting useless nonterminals.
+
+** 64 bit hosts
+  The parsers work properly on 64 bit hosts.
+
+** Error messages
+  Some calls to strerror resulted in scrambled or missing error messages.
+
+** %expect
+  When the number of shift/reduce conflicts is correct, don't issue
+  any warning.
+
+** The verbose report includes the rule line numbers.
+
+** Rule line numbers are fixed in traces.
+
+** Swedish translation
+
+** Parse errors
+  Verbose parse error messages from the parsers are better looking.
+  Before: parse error: unexpected `'/'', expecting `"number"' or `'-'' or `'(''
+     Now: parse error: unexpected '/', expecting "number" or '-' or '('
+
+** Fixed parser memory leaks.
+  When the generated parser was using malloc to extend its stacks, the
+  previous allocations were not freed.
+
+** Fixed verbose output file.
+  Some newlines were missing.
+  Some conflicts in state descriptions were missing.
+
+** Fixed conflict report.
+  Option -v was needed to get the result.
+
+** %expect
+  Was not used.
+  Mismatches are errors, not warnings.
+
+** Fixed incorrect processing of some invalid input.
+
+** Fixed CPP guards: 9foo.h uses BISON_9FOO_H instead of 9FOO_H.
+
+** Fixed some typos in the documentation.
+
+** %token MY_EOF 0 is supported.
+  Before, MY_EOF was silently renumbered as 257.
+
+** doc/refcard.tex is updated.
+
+** %output, %file-prefix, %name-prefix.
+  New.
+
+** --output
+  New, aliasing "--output-file".
+
+* Changes in version 1.30, 2001-10-26:
+
+** "--defines" and "--graph" have now an optional argument which is the
+  output file name. "-d" and "-g" do not change; they do not take any
+  argument.
+
+** "%source_extension" and "%header_extension" are removed, failed
+  experiment.
+
+** Portability fixes.
+
+* Changes in version 1.29, 2001-09-07:
+
+** The output file does not define const, as this caused problems when used
+  with common autoconfiguration schemes.  If you still use ancient compilers
+  that lack const, compile with the equivalent of the C compiler option
+  "-Dconst=".  Autoconf's AC_C_CONST macro provides one way to do this.
+
+** Added "-g" and "--graph".
+
+** The Bison manual is now distributed under the terms of the GNU FDL.
+
+** The input and the output files has automatically a similar extension.
+
+** Russian translation added.
+
+** NLS support updated; should hopefully be less troublesome.
+
+** Added the old Bison reference card.
+
+** Added "--locations" and "%locations".
+
+** Added "-S" and "--skeleton".
+
+** "%raw", "-r", "--raw" is disabled.
+
+** Special characters are escaped when output.  This solves the problems
+  of the #line lines with path names including backslashes.
+
+** New directives.
+  "%yacc", "%fixed_output_files", "%defines", "%no_parser", "%verbose",
+  "%debug", "%source_extension" and "%header_extension".
+
+** @$
+  Automatic location tracking.
+
+* Changes in version 1.28, 1999-07-06:
+
+** Should compile better now with K&R compilers.
+
+** Added NLS.
+
+** Fixed a problem with escaping the double quote character.
+
+** There is now a FAQ.
+
+* Changes in version 1.27:
+
+** The make rule which prevented bison.simple from being created on
+  some systems has been fixed.
+
+* Changes in version 1.26:
+
+** Bison now uses Automake.
+
+** New mailing lists: <bug-bison@gnu.org> and <help-bison@gnu.org>.
+
+** Token numbers now start at 257 as previously documented, not 258.
+
+** Bison honors the TMPDIR environment variable.
+
+** A couple of buffer overruns have been fixed.
+
+** Problems when closing files should now be reported.
+
+** Generated parsers should now work even on operating systems which do
+  not provide alloca().
+
+* Changes in version 1.25, 1995-10-16:
+
+** Errors in the input grammar are not fatal; Bison keeps reading
+the grammar file, and reports all the errors found in it.
+
+** Tokens can now be specified as multiple-character strings: for
+example, you could use "<=" for a token which looks like <=, instead
+of choosing a name like LESSEQ.
+
+** The %token_table declaration says to write a table of tokens (names
+and numbers) into the parser file.  The yylex function can use this
+table to recognize multiple-character string tokens, or for other
+purposes.
+
+** The %no_lines declaration says not to generate any #line preprocessor
+directives in the parser file.
+
+** The %raw declaration says to use internal Bison token numbers, not
+Yacc-compatible token numbers, when token names are defined as macros.
+
+** The --no-parser option produces the parser tables without including
+the parser engine; a project can now use its own parser engine.
+The actions go into a separate file called NAME.act, in the form of
+a switch statement body.
+
+* Changes in version 1.23:
+
+The user can define YYPARSE_PARAM as the name of an argument to be
+passed into yyparse.  The argument should have type void *.  It should
+actually point to an object.  Grammar actions can access the variable
+by casting it to the proper pointer type.
+
+Line numbers in output file corrected.
+
+* Changes in version 1.22:
+
+--help option added.
+
+* Changes in version 1.20:
+
+Output file does not redefine const for C++.
+
+-----
+
+Copyright (C) 1995-2013 Free Software Foundation, Inc.
+
+This file is part of Bison, the GNU Parser Generator.
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+ LocalWords:  yacc YYBACKUP glr GCC lalr ArrayIndexOutOfBoundsException nullptr
+ LocalWords:  cplusplus liby rpl fprintf mfcalc Wyacc stmt cond expr mk sym lr
+ LocalWords:  IELR ielr Lookahead YYERROR nonassoc LALR's api lookaheads yychar
+ LocalWords:  destructor lookahead YYRHSLOC YYLLOC Rhs ifndef YYFAIL cpp sr rr
+ LocalWords:  preprocessor initializer Wno Wnone Werror FreeBSD prec livelocks
+ LocalWords:  Solaris AIX UX RHEL Tru LHS gcc's Wundef YYENABLE NLS YYLTYPE VCG
+ LocalWords:  yyerror cpp's Wunused yylval yylloc prepend yyparse yylex yypush
+ LocalWords:  Graphviz xml nonterminals midrule destructor's YYSTYPE typedef ly
+ LocalWords:  CHR chr printf stdout namespace preprocessing enum pre include's
+ LocalWords:  YYRECOVERING nonfree destructors YYABORT YYACCEPT params enums de
+ LocalWords:  struct yystype DJGPP lex param Haible NUM alloca YYSTACK NUL goto
+ LocalWords:  YYMAXDEPTH Unescaped UCNs YYLTYPE's yyltype typedefs inline Yaccs
+ LocalWords:  Heriyanto Reenable dprec Hilfinger Eggert MYEOF Folle Menezes EOF
+ LocalWords:  Lackovic define's itemset Groff Gettext malloc NEWS'ed YYDEBUG YY
+ LocalWords:  namespaces strerror const autoconfiguration Dconst Autoconf's FDL
+ LocalWords:  Automake TMPDIR LESSEQ ylwrap endif yydebug YYTOKEN YYLSP ival hh
+ LocalWords:  extern YYTOKENTYPE TOKENTYPE yytokentype tokentype STYPE lval pdf
+ LocalWords:  lang yyoutput dvi html ps POSIX lvalp llocp Wother nterm arg init
+ LocalWords:  TOK calc yyo fval Wconflicts parsers yystackp yyval yynerrs
+ LocalWords:  Théophile Ranquet Santet fno fnone stype associativity Tolmer
+ LocalWords:  Wprecedence Rassoul Wempty Paolo Bonzini parser's Michiel loc
+ LocalWords:  redeclaration sval fcaret reentrant XSLT xsl Wmaybe yyvsp Tedi
+ LocalWords:  pragmas noreturn untyped Rozenman unexpanded Wojciech Polak
+ LocalWords:  Alexandre MERCHANTABILITY yytype
+
+Local Variables:
+mode: outline
+fill-column: 76
+End:
diff --git a/contrib/tools/bison/bison/README b/contrib/tools/bison/bison/README
new file mode 100644
index 0000000000..ed393c2856
--- /dev/null
+++ b/contrib/tools/bison/bison/README
@@ -0,0 +1,63 @@
+This package contains the GNU Bison parser generator.
+
+* Installation
+** Build
+See the file INSTALL for generic compilation and installation
+instructions.
+
+Bison requires GNU m4 1.4.6 or later.  See:
+
+      ftp://ftp.gnu.org/gnu/m4/m4-1.4.6.tar.gz
+
+** Internationalization
+Bison supports two catalogues: one for Bison itself (i.e., for the
+maintainer-side parser generation), and one for the generated parsers
+(i.e., for the user-side parser execution).  The requirements between
+both differ: bison needs ngettext, the generated parsers do not.  To
+simplify the build system, neither are installed if ngettext is not
+supported, even if generated parsers could have been localized.  See
+http://lists.gnu.org/archive/html/bug-bison/2009-08/msg00006.html for
+more details.
+
+* Questions
+See the section FAQ in the documentation (doc/bison.info) for
+frequently asked questions.  The documentation is also available in
+PDF and HTML, provided you have a recent version of Texinfo installed:
+run "make pdf" or "make html".
+
+If you have questions about using Bison and the documentation does
+not answer them, please send mail to <help-bison@gnu.org>.
+
+* Bug reports
+Please send bug reports to <bug-bison@gnu.org>.  Please include the
+version number from 'bison --version', and a complete, self-contained
+test case in each bug report.
+
+* Copyright statements
+For any copyright year range specified as YYYY-ZZZZ in this package,
+note that the range specifies every single year in that closed interval.
+
+
+Local Variables:
+mode: outline
+End:
+
+-----
+
+Copyright (C) 1992, 1998-1999, 2003-2005, 2008-2013 Free Software
+Foundation, Inc.
+
+This file is part of Bison, the GNU Compiler Compiler.
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
diff --git a/contrib/tools/bison/bison/README-alpha b/contrib/tools/bison/bison/README-alpha
new file mode 100644
index 0000000000..cf065eed34
--- /dev/null
+++ b/contrib/tools/bison/bison/README-alpha
@@ -0,0 +1,30 @@
+-*- text -*-
+
+This is a test release of this package.  Using it more or less
+implicitly signs you up to help us find whatever problems you report.
+
+The documentation still needs more work.  Suggestions welcome.
+Patches even more welcome.
+
+Please send comments and problem reports about this test release to
+<bug-bison@gnu.org>.  This program will get better only if you report
+the problems you encounter.
+
+-----
+
+Copyright (C) 2002, 2004, 2009-2013 Free Software Foundation, Inc.
+
+This file is part of GNU Bison.
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
diff --git a/contrib/tools/bison/bison/README-hacking b/contrib/tools/bison/bison/README-hacking
new file mode 100644
index 0000000000..28870cb268
--- /dev/null
+++ b/contrib/tools/bison/bison/README-hacking
@@ -0,0 +1,469 @@
+This file attempts to describe the rules to use when hacking Bison.
+Don't put this file into the distribution.
+
+Everything related to the development of Bison is on Savannah:
+
+        http://savannah.gnu.org/projects/bison/
+
+
+* Administrivia
+
+** If you incorporate a change from somebody on the net:
+First, if it is a large change, you must make sure they have signed
+the appropriate paperwork.  Second, be sure to add their name and
+email address to THANKS.
+
+** If a change fixes a test, mention the test in the commit message.
+
+** Bug reports
+If somebody reports a new bug, mention his name in the commit message
+and in the test case you write.  Put him into THANKS.
+
+The correct response to most actual bugs is to write a new test case
+which demonstrates the bug.  Then fix the bug, re-run the test suite,
+and check everything in.
+
+
+* Hacking
+
+** Visible changes
+Which include serious bug fixes, must be mentioned in NEWS.
+
+** Translations
+Only user visible strings are to be translated: error messages, bits
+of the .output file etc.  This excludes impossible error messages
+(comparable to assert/abort), and all the --trace output which is
+meant for the maintainers only.
+
+** Horizontal tabs
+Do not add horizontal tab characters to any file in Bison's repository
+except where required.  For example, do not use tabs to format C code.
+However, make files, ChangeLog, and some regular expressions require
+tabs.  Also, test cases might need to contain tabs to check that Bison
+properly processes tabs in its input.
+
+
+* Working from the repository
+
+These notes intend to help people working on the checked-out sources.
+These requirements do not apply when building from a distribution tarball.
+
+** Requirements
+
+We've opted to keep only the highest-level sources in the repository.  This
+eases our maintenance burden, (fewer merges etc.), but imposes more
+requirements on anyone wishing to build from the just-checked-out sources.
+For example, you have to use the latest stable versions of the maintainer
+tools we depend upon, including:
+
+- Autoconf <http://www.gnu.org/software/autoconf/>
+- Automake <http://www.gnu.org/software/automake/>
+- Flex <http://www.gnu.org/software/flex/>
+- Gettext <http://www.gnu.org/software/gettext/>
+- Graphviz <http://www.graphviz.org>
+- Gzip <http://www.gnu.org/software/gzip/>
+- Perl <http://www.cpan.org/>
+- Rsync <http://samba.anu.edu.au/rsync/>
+- Tar <http://www.gnu.org/software/tar/>
+
+Valgrind <http://valgrind.org/> is also highly recommended, if it supports
+your architecture.
+
+Bison is written using Bison grammars, so there are bootstrapping issues.
+The bootstrap script attempts to discover when the C code generated from the
+grammars is out of date, and to bootstrap with an out-of-date version of the
+C code, but the process is not foolproof.  Also, you may run into similar
+problems yourself if you modify Bison.
+
+Only building the initial full source tree will be a bit painful.  Later,
+after synchronizing from the repository a plain 'make' should be sufficient.
+Note, however, that when gnulib is updated, running './bootstrap' again
+might be needed.
+
+** First checkout
+
+Obviously, if you are reading these notes, you did manage to check out
+this package from the repository.  For the record, you will find all the
+relevant information on:
+
+        http://savannah.gnu.org/git/?group=bison
+
+Bison uses Git submodules: subscriptions to other Git repositories.
+In particular it uses gnulib, the GNU portability library.  To ask Git
+to perform the first checkout of the submodules, run
+
+       $ git submodule update --init
+
+Git submodule support is weak before versions 1.6 and later, you
+should probably upgrade Git if your version is older.
+
+The next step is to get other files needed to build, which are
+extracted from other source packages:
+
+        $ ./bootstrap
+
+And there you are!  Just
+
+        $ ./configure
+        $ make
+        $ make check
+
+At this point, there should be no difference between your local copy,
+and the master copy:
+
+        $ git diff
+
+should output no difference.
+
+Enjoy!
+
+** Updating
+
+The use of submodules make things somewhat different because git does
+not support recursive operations: submodules must be taken care of
+explicitly by the user.
+
+*** Updating Bison
+
+If you pull a newer version of a branch, say via "git pull", you might
+import requests for updated submodules.  A simple "git diff" will
+reveal if the current version of the submodule (i.e., the actual
+contents of the gnulib directory) and the current request from the
+subscriber (i.e., the reference of the version of gnulib that the
+Bison repository requests) differ.  To upgrade the submodules (i.e.,
+to check out the version that is actually requested by the subscriber,
+run "git submodule update".
+
+        $ git pull
+        $ git submodule update
+
+*** Updating a submodule
+To update a submodule, say gnulib, do as follows:
+
+Get the most recent version of the master branch from git.
+
+        $ cd gnulib
+        $ git fetch
+        $ git checkout -b master --track origin/master
+
+Make sure Bison can live with that version of gnulib.
+
+        $ cd ..
+        $ ./bootstrap
+        $ make distcheck
+
+Register your changes.
+
+        $ git checkin ...
+
+For a suggestion of what gnulib commit might be stable enough for a
+formal release, see the ChangeLog in the latest gnulib snapshot at:
+
+        http://erislabs.net/ianb/projects/gnulib/
+
+The Autoconf files we use are currently:
+
+        m4/m4.m4
+        lib/m4sugar/m4sugar.m4
+        lib/m4sugar/foreach.m4
+
+These files don't change very often in Autoconf, so it should be
+relatively straight-forward to examine the differences in order to
+decide whether to update.
+
+* Test suite
+
+** make check
+Use liberally.
+
+** TESTSUITEFLAGS
+
+The default is for make check to run all tests sequentially. This can be
+very time consumming when checking repeatedly or on slower setups. This can
+be sped up in two ways:
+
+Using -j, in a make-like fashion, for example:
+  $ make check TESTSUITEFLAGS='-j8'
+
+Running only the tests of a certain category, as specified in the AT files
+with AT_KEYWORDS([[category]]). Categories include:
+  - c++, for c++ parsers
+  - deprec, for tests concerning deprecated constructs.
+  - glr, for glr parsers
+  - java, for java parsers
+  - report, for automaton dumps
+
+To run a specific set of tests, use -k (for "keyword"). For example:
+  $ make check TESTSUITEFLAGS='-k c++'
+
+Both can be combined.
+
+** Typical errors
+If the test suite shows failures such as the following one
+
+  .../bison/lib/getopt.h:196:8: error: redefinition of 'struct option'
+  /usr/include/getopt.h:54:8: error: previous definition of 'struct option'
+
+it probably means that some file was compiled without
+AT_DATA_SOURCE_PROLOGUE.  This error is due to the fact that our -I options
+pick up gnulib's replacement headers, such as getopt.h, and this will go
+wrong if config.h was not included first.
+
+See tests/local.at for details.
+
+** make maintainer-check-valgrind
+This target uses valgrind both to check bison, and the generated parsers.
+
+This is not mature on Mac OS X.  First, Valgrind does support the way bison
+calls m4, so Valgrind cannot be used to check bison on Mac OS X.
+
+Second, there are many errors that come from the platform itself, not from
+bison.  build-aux/darwin11.4.0.valgrind addresses some of them.
+
+Third, valgrind issues warnings such as:
+
+  --99312:0:syswrap- WARNING: Ignoring sigreturn( ..., UC_RESET_ALT_STACK );
+
+which cause the test to fail uselessly.  It is hard to ignore these errors
+with a major overhaul of the way instrumentation is performed in the test
+suite.  So currently, do not try to run valgrind on Mac OS X.
+
+** Release checks
+Try to run the test suite with more severe conditions before a
+release:
+
+- Configure the package with --enable-gcc-warnings, so that one checks
+  that 1. Bison compiles cleanly, 2. the parsers it produces compile
+  cleanly too.
+
+- Maybe build with -DGNULIB_POSIXCHECK, which suggests gnulib modules
+  that can fix portability issues.  See if you really want to pay
+  attention to its warnings; there's no need to obey blindly to it
+  (<http://lists.gnu.org/archive/html/bison-patches/2012-05/msg00057.html>).
+
+- Check with "make syntax-check" if there are issues diagnosed by
+  gnulib.
+
+- run "make maintainer-check" which:
+  - runs "valgrind -q bison" to run Bison under Valgrind.
+  - runs the parsers under Valgrind.
+  - runs the test suite with G++ as C compiler...
+
+- run "make maintainer-push-check", which runs "make maintainer-check"
+  while activating the push implementation and its pull interface wrappers
+  in many test cases that were originally written to exercise only the
+  pull implementation.  This makes certain the push implementation can
+  perform every task the pull implementation can.
+
+- run "make maintainer-xml-check", which runs "make maintainer-check"
+  while checking Bison's XML automaton report for every working grammar
+  passed to Bison in the test suite.  The check just diffs the output of
+  Bison's included XSLT style sheets with the output of --report=all and
+  --graph.
+
+- running "make maintainer-release-check" takes care of running
+  maintainer-check, maintainer-push-check and maintainer-xml-check.
+
+- Change tests/atlocal/CFLAGS to add your preferred options.  For
+  instance, "-traditional" to check that the parsers are K&R.  Note
+  that it does not make sense for glr.c, which should be ANSI, but
+  currently is actually GNU C, nor for lalr1.cc.
+
+- Test with a very recent version of GCC for both C and C++.  Testing
+  with older versions that are still in use is nice too.
+
+
+* Release Procedure
+This section needs to be updated to take into account features from
+gnulib.  In particular, be sure to read README-release.
+
+** Update the submodules.  See above.
+
+** Update maintainer tools, such as Autoconf.  See above.
+
+** Try to get the *.pot files to the Translation Project at least one
+week before a stable release, to give them time to translate them.
+Before generating the *.pot files, make sure that po/POTFILES.in and
+runtime-po/POTFILES.in list all files with translatable strings.
+This helps: grep -l '\<_(' *
+
+** Tests
+See above.
+
+** Update the foreign files
+Running "./bootstrap" in the top level should update them all for you.
+This covers PO files too.  Sometimes a PO file contains problems that
+causes it to be rejected by recent Gettext releases; please report
+these to the Translation Project.
+
+** Update README
+Make sure the information in README is current.  Most notably, make sure
+it recommends a version of GNU M4 that is compatible with the latest
+Bison sources.
+
+** Check copyright years.
+We update years in copyright statements throughout Bison once at the
+start of every year by running "make update-copyright".  However, before
+a release, it's good to verify that it's actually been run.  Besides the
+copyright statement for each Bison file, check the copyright statements
+that the skeletons insert into generated parsers, and check all
+occurrences of PACKAGE_COPYRIGHT_YEAR in configure.ac.
+
+** Update NEWS, commit and tag.
+See do-release-commit-and-tag in README-release.  For a while, we used
+beta names such as "2.6_rc1".  Now that we use gnulib in the release
+procedure, we must use "2.5.90", which has the additional benefit of
+being properly sorted in "git tag -l".
+
+** make alpha, beta, or stable
+See README-release.
+
+** Upload
+There are two ways to upload the tarballs to the GNU servers: using
+gnupload (from gnulib), or by hand.  Obviously prefer the former.  But
+in either case, be sure to read the following paragraph.
+
+*** Setup
+You need "gnupg".
+
+Make sure your public key has been uploaded at least to
+keys.gnupg.net.  You can upload it with:
+
+  gpg --keyserver keys.gnupg.net --send-keys F125BDF3
+
+where F125BDF3 should be replaced with your key ID.
+
+*** Using gnupload
+You need "ncftp".
+
+At the end "make stable" (or alpha/beta) will display the procedure to
+run.  Just copy and paste it in your shell.
+
+*** By hand
+
+The generic GNU upload procedure is at:
+
+  http://www.gnu.org/prep/maintain/maintain.html#Automated-FTP-Uploads
+
+Follow the instructions there to register your information so you're permitted
+to upload.
+
+Here's a brief reminder of how to roll the tarballs and upload them:
+
+*** make distcheck
+*** gpg -b bison-2.3b.tar.gz
+*** In a file named "bison-2.3b.tar.gz.directive", type:
+
+      version: 1.1
+      directory: bison
+      filename: bison-2.3b.tar.gz
+
+*** gpg --clearsign bison-2.3b.tar.gz.directive
+*** ftp ftp-upload.gnu.org # Log in as anonymous.
+*** cd /incoming/alpha # cd /incoming/ftp for full release.
+*** put bison-2.3b.tar.gz # This can take a while.
+*** put bison-2.3b.tar.gz.sig
+*** put bison-2.3b.tar.gz.directive.asc
+*** Repeat all these steps for bison-2.3b.tar.xz.
+
+** Update Bison manual on www.gnu.org.
+
+*** You need a non-anonymous checkout of the web pages directory.
+
+  $ cvs -d YOUR_USERID@cvs.savannah.gnu.org:/web/bison checkout bison
+
+*** Get familiar with the instructions for web page maintainers.
+http://www.gnu.org/server/standards/readme_index.html
+http://www.gnu.org/server/standards/README.software.html
+especially the note about symlinks.
+
+*** Build the web pages.
+Assuming BISON_CHECKOUT refers to a checkout of the Bison dir, and
+BISON_WWW_CHECKOUT refers to the web directory created above, do:
+
+  $ cd $BISON_CHECKOUT/doc
+  $ make stamp-vti
+  $ ../build-aux/gendocs.sh -o "$BISON_WWW_CHECKOUT/manual" \
+    bison "Bison - GNU parser generator"
+  $ cd $BISON_WWW_CHECKOUT
+
+Verify that the result looks sane.
+
+*** Commit the modified and the new files.
+
+*** Remove old files.
+Find the files which have not been overwritten (because they belonged to
+sections that have been removed or renamed):
+
+   $ cd manual/html_node
+   $ ls -lt
+
+Remove these files and commit their removal to CVS.  For each of these
+files, add a line to the file .symlinks.  This will ensure that
+hyperlinks to the removed files will redirect to the entire manual; this
+is better than a 404 error.
+
+There is a problem with 'index.html' being written twice (once for POSIX
+function 'index', once for the table of contents); you can ignore this
+issue.
+
+** Announce
+The "make stable" (or alpha/beta) command just created a template,
+$HOME/announce-bison-X.Y.  Otherwise, to generate it, run:
+
+  make RELEASE_TYPE=alpha gpg_key_ID=F125BDF3 announcement
+
+where alpha can be replaced by beta or stable and F125BDF3 should be
+replaced with your key ID.
+
+Complete/fix the announcement file.  The generated list of recipients
+(info-gnu@gnu.org, bug-bison@gnu.org, help-bison@gnu.org,
+bison-patches@gnu.org, and coordinator@translationproject.org) is
+appropriate for a stable release or a "serious beta".  For any other
+release, drop at least info-gnu@gnu.org.  For an example of how to
+fill out the rest of the template, search the mailing list archives
+for the most recent release announcement.
+
+For a stable release, send the same announcement on the comp.compilers
+newsgroup by sending email to compilers@iecc.com.  Do not make any Cc as
+the moderator will throw away anything cross-posted or Cc'ed.  It really
+needs to be a separate message.
+
+** Prepare NEWS
+So that developers don't accidentally add new items to the old NEWS
+entry, create a new empty entry in line 3 (without the two leading
+spaces):
+
+  * Noteworthy changes in release ?.? (????-??-??) [?]
+
+Push these changes.
+
+-----
+
+Copyright (C) 2002-2005, 2007-2013 Free Software Foundation, Inc.
+
+This file is part of GNU Bison.
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+ LocalWords:  Automake Autoconf Gettext Gzip Rsync Valgrind gnulib submodules
+ LocalWords:  submodule init cd distcheck checkin ChangeLog valgrind sigreturn
+ LocalWords:  UC gcc DGNULIB POSIXCHECK xml XSLT glr lalr README po runtime rc
+ LocalWords:  gnupload gnupg gpg keyserver BDF ncftp filename clearsign cvs dir
+ LocalWords:  symlinks vti html lt POSIX Cc'ed
+
+Local Variables:
+mode: outline
+fill-column: 76
+End:
diff --git a/contrib/tools/bison/bison/induced/CMakeLists.darwin-x86_64.txt b/contrib/tools/bison/bison/induced/CMakeLists.darwin-x86_64.txt
new file mode 100644
index 0000000000..e15f313d9b
--- /dev/null
+++ b/contrib/tools/bison/bison/induced/CMakeLists.darwin-x86_64.txt
@@ -0,0 +1,10 @@
+
+# This file was generated by the build system used internally in the Yandex monorepo.
+# Only simple modifications are allowed (adding source-files to targets, adding simple properties
+# like target_include_directories). These modifications will be ported to original
+# ya.make files by maintainers. Any complex modifications which can't be ported back to the
+# original buildsystem will not be accepted.
+
+
+
+add_library(bison-bison-induced INTERFACE)
diff --git a/contrib/tools/bison/bison/induced/CMakeLists.linux-aarch64.txt b/contrib/tools/bison/bison/induced/CMakeLists.linux-aarch64.txt
new file mode 100644
index 0000000000..75b60799dd
--- /dev/null
+++ b/contrib/tools/bison/bison/induced/CMakeLists.linux-aarch64.txt
@@ -0,0 +1,13 @@
+
+# This file was generated by the build system used internally in the Yandex monorepo.
+# Only simple modifications are allowed (adding source-files to targets, adding simple properties
+# like target_include_directories). These modifications will be ported to original
+# ya.make files by maintainers. Any complex modifications which can't be ported back to the
+# original buildsystem will not be accepted.
+
+
+
+add_library(bison-bison-induced INTERFACE)
+target_link_libraries(bison-bison-induced INTERFACE
+  contrib-libs-linux-headers
+)
diff --git a/contrib/tools/bison/bison/induced/CMakeLists.linux-x86_64.txt b/contrib/tools/bison/bison/induced/CMakeLists.linux-x86_64.txt
new file mode 100644
index 0000000000..75b60799dd
--- /dev/null
+++ b/contrib/tools/bison/bison/induced/CMakeLists.linux-x86_64.txt
@@ -0,0 +1,13 @@
+
+# This file was generated by the build system used internally in the Yandex monorepo.
+# Only simple modifications are allowed (adding source-files to targets, adding simple properties
+# like target_include_directories). These modifications will be ported to original
+# ya.make files by maintainers. Any complex modifications which can't be ported back to the
+# original buildsystem will not be accepted.
+
+
+
+add_library(bison-bison-induced INTERFACE)
+target_link_libraries(bison-bison-induced INTERFACE
+  contrib-libs-linux-headers
+)
diff --git a/contrib/tools/bison/bison/induced/CMakeLists.txt b/contrib/tools/bison/bison/induced/CMakeLists.txt
new file mode 100644
index 0000000000..f8b31df0c1
--- /dev/null
+++ b/contrib/tools/bison/bison/induced/CMakeLists.txt
@@ -0,0 +1,17 @@
+
+# This file was generated by the build system used internally in the Yandex monorepo.
+# Only simple modifications are allowed (adding source-files to targets, adding simple properties
+# like target_include_directories). These modifications will be ported to original
+# ya.make files by maintainers. Any complex modifications which can't be ported back to the
+# original buildsystem will not be accepted.
+
+
+if (CMAKE_SYSTEM_NAME STREQUAL "Linux" AND CMAKE_SYSTEM_PROCESSOR STREQUAL "aarch64" AND NOT HAVE_CUDA)
+  include(CMakeLists.linux-aarch64.txt)
+elseif (CMAKE_SYSTEM_NAME STREQUAL "Darwin" AND CMAKE_SYSTEM_PROCESSOR STREQUAL "x86_64")
+  include(CMakeLists.darwin-x86_64.txt)
+elseif (WIN32 AND CMAKE_SYSTEM_PROCESSOR STREQUAL "AMD64" AND NOT HAVE_CUDA)
+  include(CMakeLists.windows-x86_64.txt)
+elseif (CMAKE_SYSTEM_NAME STREQUAL "Linux" AND CMAKE_SYSTEM_PROCESSOR STREQUAL "x86_64" AND NOT HAVE_CUDA)
+  include(CMakeLists.linux-x86_64.txt)
+endif()
diff --git a/contrib/tools/bison/bison/induced/CMakeLists.windows-x86_64.txt b/contrib/tools/bison/bison/induced/CMakeLists.windows-x86_64.txt
new file mode 100644
index 0000000000..e15f313d9b
--- /dev/null
+++ b/contrib/tools/bison/bison/induced/CMakeLists.windows-x86_64.txt
@@ -0,0 +1,10 @@
+
+# This file was generated by the build system used internally in the Yandex monorepo.
+# Only simple modifications are allowed (adding source-files to targets, adding simple properties
+# like target_include_directories). These modifications will be ported to original
+# ya.make files by maintainers. Any complex modifications which can't be ported back to the
+# original buildsystem will not be accepted.
+
+
+
+add_library(bison-bison-induced INTERFACE)
diff --git a/contrib/tools/bison/bison/induced/ya.make b/contrib/tools/bison/bison/induced/ya.make
new file mode 100644
index 0000000000..a6893e34d6
--- /dev/null
+++ b/contrib/tools/bison/bison/induced/ya.make
@@ -0,0 +1,14 @@
+# This is a special library used to induce licenses onto bison-generated code
+# It is intentionally empty.
+
+LIBRARY()
+
+LICENSE(GPL-3.0-or-later WITH Bison-exception-2.2)
+
+LICENSE_TEXTS(.yandex_meta/licenses.list.txt)
+
+NO_UTIL()
+
+NO_RUNTIME()
+
+END()
diff --git a/contrib/tools/bison/bison/ya.make b/contrib/tools/bison/bison/ya.make
index 11cc9b80bc..5b19fbee88 100644
--- a/contrib/tools/bison/bison/ya.make
+++ b/contrib/tools/bison/bison/ya.make
@@ -1,10 +1,14 @@
 PROGRAM()
 
+VERSION(3.0)
+
 LICENSE(
-    GPL-3.0-or-later AND
-    GPL-3.0-or-later WITH Bison-exception-2.2
+    GPL-3.0-only AND
+    GPL-3.0-or-later
 )
 
+ORIGINAL_SOURCE(git://git.sv.gnu.org/bison)
+
 LICENSE_TEXTS(.yandex_meta/licenses.list.txt)
 
 IF (NOT MUSL)