Restoring authorship annotation for <ilezhankin@yandex-team.ru>. Commit 1 of 2.

1 files changed, 576 insertions, 576 deletions

diff --git a/contrib/python/Pygments/py3/pygments/lexers/dotnet.py b/contrib/python/Pygments/py3/pygments/lexers/dotnet.py
index c04d2a0a92..24595f3555 100644
--- a/contrib/python/Pygments/py3/pygments/lexers/dotnet.py
+++ b/contrib/python/Pygments/py3/pygments/lexers/dotnet.py
@@ -1,416 +1,416 @@
-"""
-    pygments.lexers.dotnet
-    ~~~~~~~~~~~~~~~~~~~~~~
-
-    Lexers for .net languages.
-
+""" 
+    pygments.lexers.dotnet 
+    ~~~~~~~~~~~~~~~~~~~~~~ 
+ 
+    Lexers for .net languages. 
+ 
     :copyright: Copyright 2006-2021 by the Pygments team, see AUTHORS.
-    :license: BSD, see LICENSE for details.
-"""
-import re
-
-from pygments.lexer import RegexLexer, DelegatingLexer, bygroups, include, \
+    :license: BSD, see LICENSE for details. 
+""" 
+import re 
+ 
+from pygments.lexer import RegexLexer, DelegatingLexer, bygroups, include, \ 
     using, this, default, words
 from pygments.token import Punctuation, Text, Comment, Operator, Keyword, \
         Name, String, Number, Literal, Other, Whitespace
 from pygments.util import get_choice_opt
-from pygments import unistring as uni
-
-from pygments.lexers.html import XmlLexer
-
-__all__ = ['CSharpLexer', 'NemerleLexer', 'BooLexer', 'VbNetLexer',
-           'CSharpAspxLexer', 'VbNetAspxLexer', 'FSharpLexer']
-
-
-class CSharpLexer(RegexLexer):
-    """
-    For `C# <http://msdn2.microsoft.com/en-us/vcsharp/default.aspx>`_
-    source code.
-
-    Additional options accepted:
-
-    `unicodelevel`
-      Determines which Unicode characters this lexer allows for identifiers.
-      The possible values are:
-
-      * ``none`` -- only the ASCII letters and numbers are allowed. This
-        is the fastest selection.
-      * ``basic`` -- all Unicode characters from the specification except
-        category ``Lo`` are allowed.
-      * ``full`` -- all Unicode characters as specified in the C# specs
-        are allowed.  Note that this means a considerable slowdown since the
-        ``Lo`` category has more than 40,000 characters in it!
-
-      The default value is ``basic``.
-
-      .. versionadded:: 0.8
-    """
-
-    name = 'C#'
+from pygments import unistring as uni 
+ 
+from pygments.lexers.html import XmlLexer 
+ 
+__all__ = ['CSharpLexer', 'NemerleLexer', 'BooLexer', 'VbNetLexer', 
+           'CSharpAspxLexer', 'VbNetAspxLexer', 'FSharpLexer'] 
+ 
+ 
+class CSharpLexer(RegexLexer): 
+    """ 
+    For `C# <http://msdn2.microsoft.com/en-us/vcsharp/default.aspx>`_ 
+    source code. 
+ 
+    Additional options accepted: 
+ 
+    `unicodelevel` 
+      Determines which Unicode characters this lexer allows for identifiers. 
+      The possible values are: 
+ 
+      * ``none`` -- only the ASCII letters and numbers are allowed. This 
+        is the fastest selection. 
+      * ``basic`` -- all Unicode characters from the specification except 
+        category ``Lo`` are allowed. 
+      * ``full`` -- all Unicode characters as specified in the C# specs 
+        are allowed.  Note that this means a considerable slowdown since the 
+        ``Lo`` category has more than 40,000 characters in it! 
+ 
+      The default value is ``basic``. 
+ 
+      .. versionadded:: 0.8 
+    """ 
+ 
+    name = 'C#' 
     aliases = ['csharp', 'c#', 'cs']
-    filenames = ['*.cs']
-    mimetypes = ['text/x-csharp']  # inferred
-
-    flags = re.MULTILINE | re.DOTALL | re.UNICODE
-
-    # for the range of allowed unicode characters in identifiers, see
-    # http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-334.pdf
-
-    levels = {
+    filenames = ['*.cs'] 
+    mimetypes = ['text/x-csharp']  # inferred 
+ 
+    flags = re.MULTILINE | re.DOTALL | re.UNICODE 
+ 
+    # for the range of allowed unicode characters in identifiers, see 
+    # http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-334.pdf 
+ 
+    levels = { 
         'none': r'@?[_a-zA-Z]\w*',
-        'basic': ('@?[_' + uni.combine('Lu', 'Ll', 'Lt', 'Lm', 'Nl') + ']' +
-                  '[' + uni.combine('Lu', 'Ll', 'Lt', 'Lm', 'Nl', 'Nd', 'Pc',
-                                    'Cf', 'Mn', 'Mc') + ']*'),
-        'full': ('@?(?:_|[^' +
-                 uni.allexcept('Lu', 'Ll', 'Lt', 'Lm', 'Lo', 'Nl') + '])'
-                 + '[^' + uni.allexcept('Lu', 'Ll', 'Lt', 'Lm', 'Lo', 'Nl',
-                                        'Nd', 'Pc', 'Cf', 'Mn', 'Mc') + ']*'),
-    }
-
-    tokens = {}
-    token_variants = True
-
+        'basic': ('@?[_' + uni.combine('Lu', 'Ll', 'Lt', 'Lm', 'Nl') + ']' + 
+                  '[' + uni.combine('Lu', 'Ll', 'Lt', 'Lm', 'Nl', 'Nd', 'Pc', 
+                                    'Cf', 'Mn', 'Mc') + ']*'), 
+        'full': ('@?(?:_|[^' + 
+                 uni.allexcept('Lu', 'Ll', 'Lt', 'Lm', 'Lo', 'Nl') + '])' 
+                 + '[^' + uni.allexcept('Lu', 'Ll', 'Lt', 'Lm', 'Lo', 'Nl', 
+                                        'Nd', 'Pc', 'Cf', 'Mn', 'Mc') + ']*'), 
+    } 
+ 
+    tokens = {} 
+    token_variants = True 
+ 
     for levelname, cs_ident in levels.items():
-        tokens[levelname] = {
-            'root': [
-                # method names
+        tokens[levelname] = { 
+            'root': [ 
+                # method names 
                 (r'^([ \t]*)((?:' + cs_ident + r'(?:\[\])?\s+)+?)'  # return type
-                 r'(' + cs_ident + ')'                            # method name
-                 r'(\s*)(\()',                               # signature start
+                 r'(' + cs_ident + ')'                            # method name 
+                 r'(\s*)(\()',                               # signature start 
                  bygroups(Whitespace, using(this), Name.Function, Whitespace, 
                      Punctuation)),
                 (r'^(\s*)(\[.*?\])', bygroups(Whitespace, Name.Attribute)),
                 (r'[^\S\n]+', Whitespace),
                 (r'(\\)(\n)', bygroups(Text, Whitespace)),  # line continuation
-                (r'//.*?\n', Comment.Single),
-                (r'/[*].*?[*]/', Comment.Multiline),
+                (r'//.*?\n', Comment.Single), 
+                (r'/[*].*?[*]/', Comment.Multiline), 
                 (r'\n', Whitespace),
-                (r'[~!%^&*()+=|\[\]:;,.<>/?-]', Punctuation),
-                (r'[{}]', Punctuation),
-                (r'@"(""|[^"])*"', String),
+                (r'[~!%^&*()+=|\[\]:;,.<>/?-]', Punctuation), 
+                (r'[{}]', Punctuation), 
+                (r'@"(""|[^"])*"', String), 
                 (r'\$?"(\\\\|\\[^\\]|[^"\\\n])*["\n]', String),
-                (r"'\\.'|'[^\\]'", String.Char),
-                (r"[0-9](\.[0-9]*)?([eE][+-][0-9]+)?"
-                 r"[flFLdD]?|0[xX][0-9a-fA-F]+[Ll]?", Number),
+                (r"'\\.'|'[^\\]'", String.Char), 
+                (r"[0-9](\.[0-9]*)?([eE][+-][0-9]+)?" 
+                 r"[flFLdD]?|0[xX][0-9a-fA-F]+[Ll]?", Number), 
                 (r'(#)([ \t]*)(if|endif|else|elif|define|undef|'
                  r'line|error|warning|region|endregion|pragma)\b(.*?)(\n)',
                  bygroups(Comment.Preproc, Whitespace, Comment.Preproc, 
                      Comment.Preproc, Whitespace)),
                 (r'\b(extern)(\s+)(alias)\b', bygroups(Keyword, Whitespace,
-                 Keyword)),
+                 Keyword)), 
                 (r'(abstract|as|async|await|base|break|by|case|catch|'
-                 r'checked|const|continue|default|delegate|'
-                 r'do|else|enum|event|explicit|extern|false|finally|'
-                 r'fixed|for|foreach|goto|if|implicit|in|interface|'
+                 r'checked|const|continue|default|delegate|' 
+                 r'do|else|enum|event|explicit|extern|false|finally|' 
+                 r'fixed|for|foreach|goto|if|implicit|in|interface|' 
                  r'internal|is|let|lock|new|null|on|operator|'
-                 r'out|override|params|private|protected|public|readonly|'
-                 r'ref|return|sealed|sizeof|stackalloc|static|'
-                 r'switch|this|throw|true|try|typeof|'
-                 r'unchecked|unsafe|virtual|void|while|'
-                 r'get|set|new|partial|yield|add|remove|value|alias|ascending|'
+                 r'out|override|params|private|protected|public|readonly|' 
+                 r'ref|return|sealed|sizeof|stackalloc|static|' 
+                 r'switch|this|throw|true|try|typeof|' 
+                 r'unchecked|unsafe|virtual|void|while|' 
+                 r'get|set|new|partial|yield|add|remove|value|alias|ascending|' 
                  r'descending|from|group|into|orderby|select|thenby|where|'
-                 r'join|equals)\b', Keyword),
-                (r'(global)(::)', bygroups(Keyword, Punctuation)),
-                (r'(bool|byte|char|decimal|double|dynamic|float|int|long|object|'
-                 r'sbyte|short|string|uint|ulong|ushort|var)\b\??', Keyword.Type),
+                 r'join|equals)\b', Keyword), 
+                (r'(global)(::)', bygroups(Keyword, Punctuation)), 
+                (r'(bool|byte|char|decimal|double|dynamic|float|int|long|object|' 
+                 r'sbyte|short|string|uint|ulong|ushort|var)\b\??', Keyword.Type), 
                 (r'(class|struct)(\s+)', bygroups(Keyword, Whitespace), 'class'),
                 (r'(namespace|using)(\s+)', bygroups(Keyword, Whitespace), 'namespace'),
-                (cs_ident, Name),
-            ],
-            'class': [
-                (cs_ident, Name.Class, '#pop'),
-                default('#pop'),
-            ],
-            'namespace': [
-                (r'(?=\()', Text, '#pop'),  # using (resource)
-                ('(' + cs_ident + r'|\.)+', Name.Namespace, '#pop'),
-            ]
-        }
-
-    def __init__(self, **options):
-        level = get_choice_opt(options, 'unicodelevel', list(self.tokens), 'basic')
-        if level not in self._all_tokens:
-            # compile the regexes now
-            self._tokens = self.__class__.process_tokendef(level)
-        else:
-            self._tokens = self._all_tokens[level]
-
-        RegexLexer.__init__(self, **options)
-
-
-class NemerleLexer(RegexLexer):
-    """
-    For `Nemerle <http://nemerle.org>`_ source code.
-
-    Additional options accepted:
-
-    `unicodelevel`
-      Determines which Unicode characters this lexer allows for identifiers.
-      The possible values are:
-
-      * ``none`` -- only the ASCII letters and numbers are allowed. This
-        is the fastest selection.
-      * ``basic`` -- all Unicode characters from the specification except
-        category ``Lo`` are allowed.
-      * ``full`` -- all Unicode characters as specified in the C# specs
-        are allowed.  Note that this means a considerable slowdown since the
-        ``Lo`` category has more than 40,000 characters in it!
-
-      The default value is ``basic``.
-
-    .. versionadded:: 1.5
-    """
-
-    name = 'Nemerle'
-    aliases = ['nemerle']
-    filenames = ['*.n']
-    mimetypes = ['text/x-nemerle']  # inferred
-
-    flags = re.MULTILINE | re.DOTALL | re.UNICODE
-
-    # for the range of allowed unicode characters in identifiers, see
-    # http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-334.pdf
-
-    levels = {
+                (cs_ident, Name), 
+            ], 
+            'class': [ 
+                (cs_ident, Name.Class, '#pop'), 
+                default('#pop'), 
+            ], 
+            'namespace': [ 
+                (r'(?=\()', Text, '#pop'),  # using (resource) 
+                ('(' + cs_ident + r'|\.)+', Name.Namespace, '#pop'), 
+            ] 
+        } 
+ 
+    def __init__(self, **options): 
+        level = get_choice_opt(options, 'unicodelevel', list(self.tokens), 'basic') 
+        if level not in self._all_tokens: 
+            # compile the regexes now 
+            self._tokens = self.__class__.process_tokendef(level) 
+        else: 
+            self._tokens = self._all_tokens[level] 
+ 
+        RegexLexer.__init__(self, **options) 
+ 
+ 
+class NemerleLexer(RegexLexer): 
+    """ 
+    For `Nemerle <http://nemerle.org>`_ source code. 
+ 
+    Additional options accepted: 
+ 
+    `unicodelevel` 
+      Determines which Unicode characters this lexer allows for identifiers. 
+      The possible values are: 
+ 
+      * ``none`` -- only the ASCII letters and numbers are allowed. This 
+        is the fastest selection. 
+      * ``basic`` -- all Unicode characters from the specification except 
+        category ``Lo`` are allowed. 
+      * ``full`` -- all Unicode characters as specified in the C# specs 
+        are allowed.  Note that this means a considerable slowdown since the 
+        ``Lo`` category has more than 40,000 characters in it! 
+ 
+      The default value is ``basic``. 
+ 
+    .. versionadded:: 1.5 
+    """ 
+ 
+    name = 'Nemerle' 
+    aliases = ['nemerle'] 
+    filenames = ['*.n'] 
+    mimetypes = ['text/x-nemerle']  # inferred 
+ 
+    flags = re.MULTILINE | re.DOTALL | re.UNICODE 
+ 
+    # for the range of allowed unicode characters in identifiers, see 
+    # http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-334.pdf 
+ 
+    levels = { 
         'none': r'@?[_a-zA-Z]\w*',
-        'basic': ('@?[_' + uni.combine('Lu', 'Ll', 'Lt', 'Lm', 'Nl') + ']' +
-                  '[' + uni.combine('Lu', 'Ll', 'Lt', 'Lm', 'Nl', 'Nd', 'Pc',
-                                    'Cf', 'Mn', 'Mc') + ']*'),
-        'full': ('@?(?:_|[^' +
-                 uni.allexcept('Lu', 'Ll', 'Lt', 'Lm', 'Lo', 'Nl') + '])'
-                 + '[^' + uni.allexcept('Lu', 'Ll', 'Lt', 'Lm', 'Lo', 'Nl',
-                                        'Nd', 'Pc', 'Cf', 'Mn', 'Mc') + ']*'),
-    }
-
-    tokens = {}
-    token_variants = True
-
+        'basic': ('@?[_' + uni.combine('Lu', 'Ll', 'Lt', 'Lm', 'Nl') + ']' + 
+                  '[' + uni.combine('Lu', 'Ll', 'Lt', 'Lm', 'Nl', 'Nd', 'Pc', 
+                                    'Cf', 'Mn', 'Mc') + ']*'), 
+        'full': ('@?(?:_|[^' + 
+                 uni.allexcept('Lu', 'Ll', 'Lt', 'Lm', 'Lo', 'Nl') + '])' 
+                 + '[^' + uni.allexcept('Lu', 'Ll', 'Lt', 'Lm', 'Lo', 'Nl', 
+                                        'Nd', 'Pc', 'Cf', 'Mn', 'Mc') + ']*'), 
+    } 
+ 
+    tokens = {} 
+    token_variants = True 
+ 
     for levelname, cs_ident in levels.items():
-        tokens[levelname] = {
-            'root': [
-                # method names
+        tokens[levelname] = { 
+            'root': [ 
+                # method names 
                 (r'^([ \t]*)((?:' + cs_ident + r'(?:\[\])?\s+)+?)'  # return type
-                 r'(' + cs_ident + ')'                            # method name
-                 r'(\s*)(\()',                               # signature start
+                 r'(' + cs_ident + ')'                            # method name 
+                 r'(\s*)(\()',                               # signature start 
                  bygroups(Whitespace, using(this), Name.Function, Whitespace, \
                      Punctuation)),
                 (r'^(\s*)(\[.*?\])', bygroups(Whitespace, Name.Attribute)),
                 (r'[^\S\n]+', Whitespace),
                 (r'(\\)(\n)', bygroups(Text, Whitespace)),  # line continuation
-                (r'//.*?\n', Comment.Single),
-                (r'/[*].*?[*]/', Comment.Multiline),
+                (r'//.*?\n', Comment.Single), 
+                (r'/[*].*?[*]/', Comment.Multiline), 
                 (r'\n', Whitespace),
                 (r'(\$)(\s*)(")', bygroups(String, Whitespace, String),
                     'splice-string'),
                 (r'(\$)(\s*)(<#)', bygroups(String, Whitespace, String),
                     'splice-string2'),
-                (r'<#', String, 'recursive-string'),
-
+                (r'<#', String, 'recursive-string'), 
+ 
                 (r'(<\[)(\s*)(' + cs_ident + ':)?', bygroups(Keyword, 
                     Whitespace, Keyword)),
-                (r'\]\>', Keyword),
-
-                # quasiquotation only
-                (r'\$' + cs_ident, Name),
-                (r'(\$)(\()', bygroups(Name, Punctuation),
-                 'splice-string-content'),
-
-                (r'[~!%^&*()+=|\[\]:;,.<>/?-]', Punctuation),
-                (r'[{}]', Punctuation),
-                (r'@"(""|[^"])*"', String),
+                (r'\]\>', Keyword), 
+ 
+                # quasiquotation only 
+                (r'\$' + cs_ident, Name), 
+                (r'(\$)(\()', bygroups(Name, Punctuation), 
+                 'splice-string-content'), 
+ 
+                (r'[~!%^&*()+=|\[\]:;,.<>/?-]', Punctuation), 
+                (r'[{}]', Punctuation), 
+                (r'@"(""|[^"])*"', String), 
                 (r'"(\\\\|\\[^\\]|[^"\\\n])*["\n]', String),
-                (r"'\\.'|'[^\\]'", String.Char),
-                (r"0[xX][0-9a-fA-F]+[Ll]?", Number),
-                (r"[0-9](\.[0-9]*)?([eE][+-][0-9]+)?[flFLdD]?", Number),
+                (r"'\\.'|'[^\\]'", String.Char), 
+                (r"0[xX][0-9a-fA-F]+[Ll]?", Number), 
+                (r"[0-9](\.[0-9]*)?([eE][+-][0-9]+)?[flFLdD]?", Number), 
                 (r'(#)([ \t]*)(if|endif|else|elif|define|undef|'
                  r'line|error|warning|region|endregion|pragma)\b',
                  bygroups(Comment.Preproc, Whitespace, Comment.Preproc), 'preproc'),
                 (r'\b(extern)(\s+)(alias)\b', bygroups(Keyword, Whitespace, Keyword)),
-                (r'(abstract|and|as|base|catch|def|delegate|'
-                 r'enum|event|extern|false|finally|'
-                 r'fun|implements|interface|internal|'
-                 r'is|macro|match|matches|module|mutable|new|'
-                 r'null|out|override|params|partial|private|'
-                 r'protected|public|ref|sealed|static|'
-                 r'syntax|this|throw|true|try|type|typeof|'
-                 r'virtual|volatile|when|where|with|'
-                 r'assert|assert2|async|break|checked|continue|do|else|'
-                 r'ensures|for|foreach|if|late|lock|new|nolate|'
-                 r'otherwise|regexp|repeat|requires|return|surroundwith|'
-                 r'unchecked|unless|using|while|yield)\b', Keyword),
-                (r'(global)(::)', bygroups(Keyword, Punctuation)),
-                (r'(bool|byte|char|decimal|double|float|int|long|object|sbyte|'
-                 r'short|string|uint|ulong|ushort|void|array|list)\b\??',
-                 Keyword.Type),
+                (r'(abstract|and|as|base|catch|def|delegate|' 
+                 r'enum|event|extern|false|finally|' 
+                 r'fun|implements|interface|internal|' 
+                 r'is|macro|match|matches|module|mutable|new|' 
+                 r'null|out|override|params|partial|private|' 
+                 r'protected|public|ref|sealed|static|' 
+                 r'syntax|this|throw|true|try|type|typeof|' 
+                 r'virtual|volatile|when|where|with|' 
+                 r'assert|assert2|async|break|checked|continue|do|else|' 
+                 r'ensures|for|foreach|if|late|lock|new|nolate|' 
+                 r'otherwise|regexp|repeat|requires|return|surroundwith|' 
+                 r'unchecked|unless|using|while|yield)\b', Keyword), 
+                (r'(global)(::)', bygroups(Keyword, Punctuation)), 
+                (r'(bool|byte|char|decimal|double|float|int|long|object|sbyte|' 
+                 r'short|string|uint|ulong|ushort|void|array|list)\b\??', 
+                 Keyword.Type), 
                 (r'(:>?)(\s*)(' + cs_ident + r'\??)',
                  bygroups(Punctuation, Whitespace, Keyword.Type)),
-                (r'(class|struct|variant|module)(\s+)',
+                (r'(class|struct|variant|module)(\s+)', 
                  bygroups(Keyword, Whitespace), 'class'),
                 (r'(namespace|using)(\s+)', bygroups(Keyword, Whitespace),
-                 'namespace'),
-                (cs_ident, Name),
-            ],
-            'class': [
-                (cs_ident, Name.Class, '#pop')
-            ],
+                 'namespace'), 
+                (cs_ident, Name), 
+            ], 
+            'class': [ 
+                (cs_ident, Name.Class, '#pop') 
+            ], 
             'preproc': [
                 (r'\w+', Comment.Preproc),
                 (r'[ \t]+', Whitespace),
                 (r'\n', Whitespace, '#pop')
             ],
-            'namespace': [
-                (r'(?=\()', Text, '#pop'),  # using (resource)
-                ('(' + cs_ident + r'|\.)+', Name.Namespace, '#pop')
-            ],
-            'splice-string': [
-                (r'[^"$]',  String),
-                (r'\$' + cs_ident, Name),
-                (r'(\$)(\()', bygroups(Name, Punctuation),
-                 'splice-string-content'),
-                (r'\\"',  String),
-                (r'"',  String, '#pop')
-            ],
-            'splice-string2': [
-                (r'[^#<>$]',  String),
-                (r'\$' + cs_ident, Name),
-                (r'(\$)(\()', bygroups(Name, Punctuation),
-                 'splice-string-content'),
-                (r'<#',  String, '#push'),
-                (r'#>',  String, '#pop')
-            ],
-            'recursive-string': [
-                (r'[^#<>]',  String),
-                (r'<#',  String, '#push'),
-                (r'#>',  String, '#pop')
-            ],
-            'splice-string-content': [
-                (r'if|match', Keyword),
-                (r'[~!%^&*+=|\[\]:;,.<>/?-\\"$ ]', Punctuation),
-                (cs_ident, Name),
-                (r'\d+', Number),
-                (r'\(', Punctuation, '#push'),
-                (r'\)', Punctuation, '#pop')
-            ]
-        }
-
-    def __init__(self, **options):
-        level = get_choice_opt(options, 'unicodelevel', list(self.tokens),
-                               'basic')
-        if level not in self._all_tokens:
-            # compile the regexes now
-            self._tokens = self.__class__.process_tokendef(level)
-        else:
-            self._tokens = self._all_tokens[level]
-
-        RegexLexer.__init__(self, **options)
-
+            'namespace': [ 
+                (r'(?=\()', Text, '#pop'),  # using (resource) 
+                ('(' + cs_ident + r'|\.)+', Name.Namespace, '#pop') 
+            ], 
+            'splice-string': [ 
+                (r'[^"$]',  String), 
+                (r'\$' + cs_ident, Name), 
+                (r'(\$)(\()', bygroups(Name, Punctuation), 
+                 'splice-string-content'), 
+                (r'\\"',  String), 
+                (r'"',  String, '#pop') 
+            ], 
+            'splice-string2': [ 
+                (r'[^#<>$]',  String), 
+                (r'\$' + cs_ident, Name), 
+                (r'(\$)(\()', bygroups(Name, Punctuation), 
+                 'splice-string-content'), 
+                (r'<#',  String, '#push'), 
+                (r'#>',  String, '#pop') 
+            ], 
+            'recursive-string': [ 
+                (r'[^#<>]',  String), 
+                (r'<#',  String, '#push'), 
+                (r'#>',  String, '#pop') 
+            ], 
+            'splice-string-content': [ 
+                (r'if|match', Keyword), 
+                (r'[~!%^&*+=|\[\]:;,.<>/?-\\"$ ]', Punctuation), 
+                (cs_ident, Name), 
+                (r'\d+', Number), 
+                (r'\(', Punctuation, '#push'), 
+                (r'\)', Punctuation, '#pop') 
+            ] 
+        } 
+ 
+    def __init__(self, **options): 
+        level = get_choice_opt(options, 'unicodelevel', list(self.tokens), 
+                               'basic') 
+        if level not in self._all_tokens: 
+            # compile the regexes now 
+            self._tokens = self.__class__.process_tokendef(level) 
+        else: 
+            self._tokens = self._all_tokens[level] 
+ 
+        RegexLexer.__init__(self, **options) 
+ 
     def analyse_text(text):
         """Nemerle is quite similar to Python, but @if is relatively uncommon
         elsewhere."""
         result = 0
-
+ 
         if '@if' in text:
             result += 0.1
 
         return result
 
 
-class BooLexer(RegexLexer):
-    """
-    For `Boo <http://boo.codehaus.org/>`_ source code.
-    """
-
-    name = 'Boo'
-    aliases = ['boo']
-    filenames = ['*.boo']
-    mimetypes = ['text/x-boo']
-
-    tokens = {
-        'root': [
+class BooLexer(RegexLexer): 
+    """ 
+    For `Boo <http://boo.codehaus.org/>`_ source code. 
+    """ 
+ 
+    name = 'Boo' 
+    aliases = ['boo'] 
+    filenames = ['*.boo'] 
+    mimetypes = ['text/x-boo'] 
+ 
+    tokens = { 
+        'root': [ 
             (r'\s+', Whitespace),
-            (r'(#|//).*$', Comment.Single),
-            (r'/[*]', Comment.Multiline, 'comment'),
-            (r'[]{}:(),.;[]', Punctuation),
+            (r'(#|//).*$', Comment.Single), 
+            (r'/[*]', Comment.Multiline, 'comment'), 
+            (r'[]{}:(),.;[]', Punctuation), 
             (r'(\\)(\n)', bygroups(Text, Whitespace)),
-            (r'\\', Text),
-            (r'(in|is|and|or|not)\b', Operator.Word),
+            (r'\\', Text), 
+            (r'(in|is|and|or|not)\b', Operator.Word), 
             (r'/(\\\\|\\[^\\]|[^/\\\s])/', String.Regex),
             (r'@/(\\\\|\\[^\\]|[^/\\])*/', String.Regex),
-            (r'=~|!=|==|<<|>>|[-+/*%=<>&^|]', Operator),
-            (r'(as|abstract|callable|constructor|destructor|do|import|'
-             r'enum|event|final|get|interface|internal|of|override|'
-             r'partial|private|protected|public|return|set|static|'
-             r'struct|transient|virtual|yield|super|and|break|cast|'
-             r'continue|elif|else|ensure|except|for|given|goto|if|in|'
-             r'is|isa|not|or|otherwise|pass|raise|ref|try|unless|when|'
-             r'while|from|as)\b', Keyword),
-            (r'def(?=\s+\(.*?\))', Keyword),
+            (r'=~|!=|==|<<|>>|[-+/*%=<>&^|]', Operator), 
+            (r'(as|abstract|callable|constructor|destructor|do|import|' 
+             r'enum|event|final|get|interface|internal|of|override|' 
+             r'partial|private|protected|public|return|set|static|' 
+             r'struct|transient|virtual|yield|super|and|break|cast|' 
+             r'continue|elif|else|ensure|except|for|given|goto|if|in|' 
+             r'is|isa|not|or|otherwise|pass|raise|ref|try|unless|when|' 
+             r'while|from|as)\b', Keyword), 
+            (r'def(?=\s+\(.*?\))', Keyword), 
             (r'(def)(\s+)', bygroups(Keyword, Whitespace), 'funcname'),
             (r'(class)(\s+)', bygroups(Keyword, Whitespace), 'classname'),
             (r'(namespace)(\s+)', bygroups(Keyword, Whitespace), 'namespace'),
-            (r'(?<!\.)(true|false|null|self|__eval__|__switch__|array|'
-             r'assert|checked|enumerate|filter|getter|len|lock|map|'
-             r'matrix|max|min|normalArrayIndexing|print|property|range|'
-             r'rawArrayIndexing|required|typeof|unchecked|using|'
-             r'yieldAll|zip)\b', Name.Builtin),
-            (r'"""(\\\\|\\"|.*?)"""', String.Double),
+            (r'(?<!\.)(true|false|null|self|__eval__|__switch__|array|' 
+             r'assert|checked|enumerate|filter|getter|len|lock|map|' 
+             r'matrix|max|min|normalArrayIndexing|print|property|range|' 
+             r'rawArrayIndexing|required|typeof|unchecked|using|' 
+             r'yieldAll|zip)\b', Name.Builtin), 
+            (r'"""(\\\\|\\"|.*?)"""', String.Double), 
             (r'"(\\\\|\\[^\\]|[^"\\])*"', String.Double),
             (r"'(\\\\|\\[^\\]|[^'\\])*'", String.Single),
-            (r'[a-zA-Z_]\w*', Name),
-            (r'(\d+\.\d*|\d*\.\d+)([fF][+-]?[0-9]+)?', Number.Float),
-            (r'[0-9][0-9.]*(ms?|d|h|s)', Number),
-            (r'0\d+', Number.Oct),
-            (r'0x[a-fA-F0-9]+', Number.Hex),
-            (r'\d+L', Number.Integer.Long),
-            (r'\d+', Number.Integer),
-        ],
-        'comment': [
-            ('/[*]', Comment.Multiline, '#push'),
-            ('[*]/', Comment.Multiline, '#pop'),
-            ('[^/*]', Comment.Multiline),
-            ('[*/]', Comment.Multiline)
-        ],
-        'funcname': [
+            (r'[a-zA-Z_]\w*', Name), 
+            (r'(\d+\.\d*|\d*\.\d+)([fF][+-]?[0-9]+)?', Number.Float), 
+            (r'[0-9][0-9.]*(ms?|d|h|s)', Number), 
+            (r'0\d+', Number.Oct), 
+            (r'0x[a-fA-F0-9]+', Number.Hex), 
+            (r'\d+L', Number.Integer.Long), 
+            (r'\d+', Number.Integer), 
+        ], 
+        'comment': [ 
+            ('/[*]', Comment.Multiline, '#push'), 
+            ('[*]/', Comment.Multiline, '#pop'), 
+            ('[^/*]', Comment.Multiline), 
+            ('[*/]', Comment.Multiline) 
+        ], 
+        'funcname': [ 
             (r'[a-zA-Z_]\w*', Name.Function, '#pop')
-        ],
-        'classname': [
+        ], 
+        'classname': [ 
             (r'[a-zA-Z_]\w*', Name.Class, '#pop')
-        ],
-        'namespace': [
+        ], 
+        'namespace': [ 
             (r'[a-zA-Z_][\w.]*', Name.Namespace, '#pop')
-        ]
-    }
-
-
-class VbNetLexer(RegexLexer):
-    """
-    For
-    `Visual Basic.NET <http://msdn2.microsoft.com/en-us/vbasic/default.aspx>`_
-    source code.
-    """
-
-    name = 'VB.net'
-    aliases = ['vb.net', 'vbnet']
-    filenames = ['*.vb', '*.bas']
-    mimetypes = ['text/x-vbnet', 'text/x-vba']  # (?)
-
+        ] 
+    } 
+ 
+ 
+class VbNetLexer(RegexLexer): 
+    """ 
+    For 
+    `Visual Basic.NET <http://msdn2.microsoft.com/en-us/vbasic/default.aspx>`_ 
+    source code. 
+    """ 
+ 
+    name = 'VB.net' 
+    aliases = ['vb.net', 'vbnet'] 
+    filenames = ['*.vb', '*.bas'] 
+    mimetypes = ['text/x-vbnet', 'text/x-vba']  # (?) 
+ 
     uni_name = '[_' + uni.combine('Ll', 'Lt', 'Lm', 'Nl') + ']' + \
                '[' + uni.combine('Ll', 'Lt', 'Lm', 'Nl', 'Nd', 'Pc',
-                                 'Cf', 'Mn', 'Mc') + ']*'
-
-    flags = re.MULTILINE | re.IGNORECASE
-    tokens = {
-        'root': [
-            (r'^\s*<.*?>', Name.Attribute),
+                                 'Cf', 'Mn', 'Mc') + ']*' 
+ 
+    flags = re.MULTILINE | re.IGNORECASE 
+    tokens = { 
+        'root': [ 
+            (r'^\s*<.*?>', Name.Attribute), 
             (r'\s+', Whitespace),
             (r'\n', Whitespace),
             (r'(rem\b.*?)(\n)', bygroups(Comment, Whitespace)),
             (r"('.*?)(\n)", bygroups(Comment, Whitespace)),
-            (r'#If\s.*?\sThen|#ElseIf\s.*?\sThen|#Else|#End\s+If|#Const|'
-             r'#ExternalSource.*?\n|#End\s+ExternalSource|'
-             r'#Region.*?\n|#End\s+Region|#ExternalChecksum',
-             Comment.Preproc),
-            (r'[(){}!#,.:]', Punctuation),
+            (r'#If\s.*?\sThen|#ElseIf\s.*?\sThen|#Else|#End\s+If|#Const|' 
+             r'#ExternalSource.*?\n|#End\s+ExternalSource|' 
+             r'#Region.*?\n|#End\s+Region|#ExternalChecksum', 
+             Comment.Preproc), 
+            (r'[(){}!#,.:]', Punctuation), 
             (r'(Option)(\s+)(Strict|Explicit|Compare)(\s+)'
              r'(On|Off|Binary|Text)', bygroups(Keyword.Declaration, Whitespace,
                  Keyword.Declaration, Whitespace, Keyword.Declaration)),
@@ -434,277 +434,277 @@ class VbNetLexer(RegexLexer):
                 'True', 'Try', 'TryCast', 'Wend', 'Using', 'When', 'While',
                 'Widening', 'With', 'WithEvents', 'WriteOnly'),
                    prefix=r'(?<!\.)', suffix=r'\b'), Keyword),
-            (r'(?<!\.)End\b', Keyword, 'end'),
-            (r'(?<!\.)(Dim|Const)\b', Keyword, 'dim'),
-            (r'(?<!\.)(Function|Sub|Property)(\s+)',
+            (r'(?<!\.)End\b', Keyword, 'end'), 
+            (r'(?<!\.)(Dim|Const)\b', Keyword, 'dim'), 
+            (r'(?<!\.)(Function|Sub|Property)(\s+)', 
              bygroups(Keyword, Whitespace), 'funcname'),
-            (r'(?<!\.)(Class|Structure|Enum)(\s+)',
+            (r'(?<!\.)(Class|Structure|Enum)(\s+)', 
              bygroups(Keyword, Whitespace), 'classname'),
-            (r'(?<!\.)(Module|Namespace|Imports)(\s+)',
+            (r'(?<!\.)(Module|Namespace|Imports)(\s+)', 
              bygroups(Keyword, Whitespace), 'namespace'),
-            (r'(?<!\.)(Boolean|Byte|Char|Date|Decimal|Double|Integer|Long|'
-             r'Object|SByte|Short|Single|String|Variant|UInteger|ULong|'
-             r'UShort)\b', Keyword.Type),
-            (r'(?<!\.)(AddressOf|And|AndAlso|As|GetType|In|Is|IsNot|Like|Mod|'
-             r'Or|OrElse|TypeOf|Xor)\b', Operator.Word),
-            (r'&=|[*]=|/=|\\=|\^=|\+=|-=|<<=|>>=|<<|>>|:=|'
-             r'<=|>=|<>|[-&*/\\^+=<>\[\]]',
-             Operator),
-            ('"', String, 'string'),
+            (r'(?<!\.)(Boolean|Byte|Char|Date|Decimal|Double|Integer|Long|' 
+             r'Object|SByte|Short|Single|String|Variant|UInteger|ULong|' 
+             r'UShort)\b', Keyword.Type), 
+            (r'(?<!\.)(AddressOf|And|AndAlso|As|GetType|In|Is|IsNot|Like|Mod|' 
+             r'Or|OrElse|TypeOf|Xor)\b', Operator.Word), 
+            (r'&=|[*]=|/=|\\=|\^=|\+=|-=|<<=|>>=|<<|>>|:=|' 
+             r'<=|>=|<>|[-&*/\\^+=<>\[\]]', 
+             Operator), 
+            ('"', String, 'string'), 
             (r'(_)(\n)', bygroups(Text, Whitespace)),  # Line continuation  (must be before Name)
-            (uni_name + '[%&@!#$]?', Name),
-            ('#.*?#', Literal.Date),
-            (r'(\d+\.\d*|\d*\.\d+)(F[+-]?[0-9]+)?', Number.Float),
-            (r'\d+([SILDFR]|US|UI|UL)?', Number.Integer),
-            (r'&H[0-9a-f]+([SILDFR]|US|UI|UL)?', Number.Integer),
-            (r'&O[0-7]+([SILDFR]|US|UI|UL)?', Number.Integer),
-        ],
-        'string': [
-            (r'""', String),
-            (r'"C?', String, '#pop'),
-            (r'[^"]+', String),
-        ],
-        'dim': [
-            (uni_name, Name.Variable, '#pop'),
-            default('#pop'),  # any other syntax
-        ],
-        'funcname': [
-            (uni_name, Name.Function, '#pop'),
-        ],
-        'classname': [
-            (uni_name, Name.Class, '#pop'),
-        ],
-        'namespace': [
-            (uni_name, Name.Namespace),
-            (r'\.', Name.Namespace),
-            default('#pop'),
-        ],
-        'end': [
+            (uni_name + '[%&@!#$]?', Name), 
+            ('#.*?#', Literal.Date), 
+            (r'(\d+\.\d*|\d*\.\d+)(F[+-]?[0-9]+)?', Number.Float), 
+            (r'\d+([SILDFR]|US|UI|UL)?', Number.Integer), 
+            (r'&H[0-9a-f]+([SILDFR]|US|UI|UL)?', Number.Integer), 
+            (r'&O[0-7]+([SILDFR]|US|UI|UL)?', Number.Integer), 
+        ], 
+        'string': [ 
+            (r'""', String), 
+            (r'"C?', String, '#pop'), 
+            (r'[^"]+', String), 
+        ], 
+        'dim': [ 
+            (uni_name, Name.Variable, '#pop'), 
+            default('#pop'),  # any other syntax 
+        ], 
+        'funcname': [ 
+            (uni_name, Name.Function, '#pop'), 
+        ], 
+        'classname': [ 
+            (uni_name, Name.Class, '#pop'), 
+        ], 
+        'namespace': [ 
+            (uni_name, Name.Namespace), 
+            (r'\.', Name.Namespace), 
+            default('#pop'), 
+        ], 
+        'end': [ 
             (r'\s+', Whitespace),
-            (r'(Function|Sub|Property|Class|Structure|Enum|Module|Namespace)\b',
-             Keyword, '#pop'),
-            default('#pop'),
-        ]
-    }
-
-    def analyse_text(text):
-        if re.search(r'^\s*(#If|Module|Namespace)', text, re.MULTILINE):
-            return 0.5
-
-
-class GenericAspxLexer(RegexLexer):
-    """
-    Lexer for ASP.NET pages.
-    """
-
-    name = 'aspx-gen'
-    filenames = []
-    mimetypes = []
-
-    flags = re.DOTALL
-
-    tokens = {
-        'root': [
-            (r'(<%[@=#]?)(.*?)(%>)', bygroups(Name.Tag, Other, Name.Tag)),
-            (r'(<script.*?>)(.*?)(</script>)', bygroups(using(XmlLexer),
-                                                        Other,
-                                                        using(XmlLexer))),
-            (r'(.+?)(?=<)', using(XmlLexer)),
-            (r'.+', using(XmlLexer)),
-        ],
-    }
-
-
-# TODO support multiple languages within the same source file
-class CSharpAspxLexer(DelegatingLexer):
-    """
-    Lexer for highlighting C# within ASP.NET pages.
-    """
-
-    name = 'aspx-cs'
-    aliases = ['aspx-cs']
-    filenames = ['*.aspx', '*.asax', '*.ascx', '*.ashx', '*.asmx', '*.axd']
-    mimetypes = []
-
-    def __init__(self, **options):
+            (r'(Function|Sub|Property|Class|Structure|Enum|Module|Namespace)\b', 
+             Keyword, '#pop'), 
+            default('#pop'), 
+        ] 
+    } 
+ 
+    def analyse_text(text): 
+        if re.search(r'^\s*(#If|Module|Namespace)', text, re.MULTILINE): 
+            return 0.5 
+ 
+ 
+class GenericAspxLexer(RegexLexer): 
+    """ 
+    Lexer for ASP.NET pages. 
+    """ 
+ 
+    name = 'aspx-gen' 
+    filenames = [] 
+    mimetypes = [] 
+ 
+    flags = re.DOTALL 
+ 
+    tokens = { 
+        'root': [ 
+            (r'(<%[@=#]?)(.*?)(%>)', bygroups(Name.Tag, Other, Name.Tag)), 
+            (r'(<script.*?>)(.*?)(</script>)', bygroups(using(XmlLexer), 
+                                                        Other, 
+                                                        using(XmlLexer))), 
+            (r'(.+?)(?=<)', using(XmlLexer)), 
+            (r'.+', using(XmlLexer)), 
+        ], 
+    } 
+ 
+ 
+# TODO support multiple languages within the same source file 
+class CSharpAspxLexer(DelegatingLexer): 
+    """ 
+    Lexer for highlighting C# within ASP.NET pages. 
+    """ 
+ 
+    name = 'aspx-cs' 
+    aliases = ['aspx-cs'] 
+    filenames = ['*.aspx', '*.asax', '*.ascx', '*.ashx', '*.asmx', '*.axd'] 
+    mimetypes = [] 
+ 
+    def __init__(self, **options): 
         super().__init__(CSharpLexer, GenericAspxLexer, **options)
-
-    def analyse_text(text):
-        if re.search(r'Page\s*Language="C#"', text, re.I) is not None:
-            return 0.2
-        elif re.search(r'script[^>]+language=["\']C#', text, re.I) is not None:
-            return 0.15
-
-
-class VbNetAspxLexer(DelegatingLexer):
-    """
-    Lexer for highlighting Visual Basic.net within ASP.NET pages.
-    """
-
-    name = 'aspx-vb'
-    aliases = ['aspx-vb']
-    filenames = ['*.aspx', '*.asax', '*.ascx', '*.ashx', '*.asmx', '*.axd']
-    mimetypes = []
-
-    def __init__(self, **options):
+ 
+    def analyse_text(text): 
+        if re.search(r'Page\s*Language="C#"', text, re.I) is not None: 
+            return 0.2 
+        elif re.search(r'script[^>]+language=["\']C#', text, re.I) is not None: 
+            return 0.15 
+ 
+ 
+class VbNetAspxLexer(DelegatingLexer): 
+    """ 
+    Lexer for highlighting Visual Basic.net within ASP.NET pages. 
+    """ 
+ 
+    name = 'aspx-vb' 
+    aliases = ['aspx-vb'] 
+    filenames = ['*.aspx', '*.asax', '*.ascx', '*.ashx', '*.asmx', '*.axd'] 
+    mimetypes = [] 
+ 
+    def __init__(self, **options): 
         super().__init__(VbNetLexer, GenericAspxLexer, **options)
-
-    def analyse_text(text):
-        if re.search(r'Page\s*Language="Vb"', text, re.I) is not None:
-            return 0.2
-        elif re.search(r'script[^>]+language=["\']vb', text, re.I) is not None:
-            return 0.15
-
-
-# Very close to functional.OcamlLexer
-class FSharpLexer(RegexLexer):
-    """
+ 
+    def analyse_text(text): 
+        if re.search(r'Page\s*Language="Vb"', text, re.I) is not None: 
+            return 0.2 
+        elif re.search(r'script[^>]+language=["\']vb', text, re.I) is not None: 
+            return 0.15 
+ 
+ 
+# Very close to functional.OcamlLexer 
+class FSharpLexer(RegexLexer): 
+    """ 
     For the `F# language <https://fsharp.org/>`_ (version 3.0).
-
-    .. versionadded:: 1.5
-    """
-
+ 
+    .. versionadded:: 1.5 
+    """ 
+ 
     name = 'F#'
     aliases = ['fsharp', 'f#']
-    filenames = ['*.fs', '*.fsi']
-    mimetypes = ['text/x-fsharp']
-
-    keywords = [
-        'abstract', 'as', 'assert', 'base', 'begin', 'class', 'default',
-        'delegate', 'do!', 'do', 'done', 'downcast', 'downto', 'elif', 'else',
-        'end', 'exception', 'extern', 'false', 'finally', 'for', 'function',
-        'fun', 'global', 'if', 'inherit', 'inline', 'interface', 'internal',
-        'in', 'lazy', 'let!', 'let', 'match', 'member', 'module', 'mutable',
-        'namespace', 'new', 'null', 'of', 'open', 'override', 'private', 'public',
-        'rec', 'return!', 'return', 'select', 'static', 'struct', 'then', 'to',
-        'true', 'try', 'type', 'upcast', 'use!', 'use', 'val', 'void', 'when',
-        'while', 'with', 'yield!', 'yield',
-    ]
-    # Reserved words; cannot hurt to color them as keywords too.
-    keywords += [
-        'atomic', 'break', 'checked', 'component', 'const', 'constraint',
-        'constructor', 'continue', 'eager', 'event', 'external', 'fixed',
-        'functor', 'include', 'method', 'mixin', 'object', 'parallel',
-        'process', 'protected', 'pure', 'sealed', 'tailcall', 'trait',
-        'virtual', 'volatile',
-    ]
-    keyopts = [
+    filenames = ['*.fs', '*.fsi'] 
+    mimetypes = ['text/x-fsharp'] 
+ 
+    keywords = [ 
+        'abstract', 'as', 'assert', 'base', 'begin', 'class', 'default', 
+        'delegate', 'do!', 'do', 'done', 'downcast', 'downto', 'elif', 'else', 
+        'end', 'exception', 'extern', 'false', 'finally', 'for', 'function', 
+        'fun', 'global', 'if', 'inherit', 'inline', 'interface', 'internal', 
+        'in', 'lazy', 'let!', 'let', 'match', 'member', 'module', 'mutable', 
+        'namespace', 'new', 'null', 'of', 'open', 'override', 'private', 'public', 
+        'rec', 'return!', 'return', 'select', 'static', 'struct', 'then', 'to', 
+        'true', 'try', 'type', 'upcast', 'use!', 'use', 'val', 'void', 'when', 
+        'while', 'with', 'yield!', 'yield', 
+    ] 
+    # Reserved words; cannot hurt to color them as keywords too. 
+    keywords += [ 
+        'atomic', 'break', 'checked', 'component', 'const', 'constraint', 
+        'constructor', 'continue', 'eager', 'event', 'external', 'fixed', 
+        'functor', 'include', 'method', 'mixin', 'object', 'parallel', 
+        'process', 'protected', 'pure', 'sealed', 'tailcall', 'trait', 
+        'virtual', 'volatile', 
+    ] 
+    keyopts = [ 
         '!=', '#', '&&', '&', r'\(', r'\)', r'\*', r'\+', ',', r'-\.',
         '->', '-', r'\.\.', r'\.', '::', ':=', ':>', ':', ';;', ';', '<-',
         r'<\]', '<', r'>\]', '>', r'\?\?', r'\?', r'\[<', r'\[\|', r'\[', r'\]',
         '_', '`', r'\{', r'\|\]', r'\|', r'\}', '~', '<@@', '<@', '=', '@>', '@@>',
-    ]
-
-    operators = r'[!$%&*+\./:<=>?@^|~-]'
-    word_operators = ['and', 'or', 'not']
-    prefix_syms = r'[!?~]'
-    infix_syms = r'[=<>@^|&+\*/$%-]'
-    primitives = [
-        'sbyte', 'byte', 'char', 'nativeint', 'unativeint', 'float32', 'single',
-        'float', 'double', 'int8', 'uint8', 'int16', 'uint16', 'int32',
-        'uint32', 'int64', 'uint64', 'decimal', 'unit', 'bool', 'string',
-        'list', 'exn', 'obj', 'enum',
-    ]
-
-    # See http://msdn.microsoft.com/en-us/library/dd233181.aspx and/or
-    # http://fsharp.org/about/files/spec.pdf for reference.  Good luck.
-
-    tokens = {
-        'escape-sequence': [
-            (r'\\[\\"\'ntbrafv]', String.Escape),
-            (r'\\[0-9]{3}', String.Escape),
-            (r'\\u[0-9a-fA-F]{4}', String.Escape),
-            (r'\\U[0-9a-fA-F]{8}', String.Escape),
-        ],
-        'root': [
+    ] 
+ 
+    operators = r'[!$%&*+\./:<=>?@^|~-]' 
+    word_operators = ['and', 'or', 'not'] 
+    prefix_syms = r'[!?~]' 
+    infix_syms = r'[=<>@^|&+\*/$%-]' 
+    primitives = [ 
+        'sbyte', 'byte', 'char', 'nativeint', 'unativeint', 'float32', 'single', 
+        'float', 'double', 'int8', 'uint8', 'int16', 'uint16', 'int32', 
+        'uint32', 'int64', 'uint64', 'decimal', 'unit', 'bool', 'string', 
+        'list', 'exn', 'obj', 'enum', 
+    ] 
+ 
+    # See http://msdn.microsoft.com/en-us/library/dd233181.aspx and/or 
+    # http://fsharp.org/about/files/spec.pdf for reference.  Good luck. 
+ 
+    tokens = { 
+        'escape-sequence': [ 
+            (r'\\[\\"\'ntbrafv]', String.Escape), 
+            (r'\\[0-9]{3}', String.Escape), 
+            (r'\\u[0-9a-fA-F]{4}', String.Escape), 
+            (r'\\U[0-9a-fA-F]{8}', String.Escape), 
+        ], 
+        'root': [ 
             (r'\s+', Whitespace),
-            (r'\(\)|\[\]', Name.Builtin.Pseudo),
-            (r'\b(?<!\.)([A-Z][\w\']*)(?=\s*\.)',
-             Name.Namespace, 'dotted'),
-            (r'\b([A-Z][\w\']*)', Name),
+            (r'\(\)|\[\]', Name.Builtin.Pseudo), 
+            (r'\b(?<!\.)([A-Z][\w\']*)(?=\s*\.)', 
+             Name.Namespace, 'dotted'), 
+            (r'\b([A-Z][\w\']*)', Name), 
             (r'(///.*?)(\n)', bygroups(String.Doc, Whitespace)),
             (r'(//.*?)(\n)', bygroups(Comment.Single, Whitespace)),
-            (r'\(\*(?!\))', Comment, 'comment'),
-
-            (r'@"', String, 'lstring'),
-            (r'"""', String, 'tqs'),
-            (r'"', String, 'string'),
-
-            (r'\b(open|module)(\s+)([\w.]+)',
+            (r'\(\*(?!\))', Comment, 'comment'), 
+ 
+            (r'@"', String, 'lstring'), 
+            (r'"""', String, 'tqs'), 
+            (r'"', String, 'string'), 
+ 
+            (r'\b(open|module)(\s+)([\w.]+)', 
              bygroups(Keyword, Whitespace, Name.Namespace)),
-            (r'\b(let!?)(\s+)(\w+)',
+            (r'\b(let!?)(\s+)(\w+)', 
              bygroups(Keyword, Whitespace, Name.Variable)),
-            (r'\b(type)(\s+)(\w+)',
+            (r'\b(type)(\s+)(\w+)', 
              bygroups(Keyword, Whitespace, Name.Class)),
-            (r'\b(member|override)(\s+)(\w+)(\.)(\w+)',
+            (r'\b(member|override)(\s+)(\w+)(\.)(\w+)', 
              bygroups(Keyword, Whitespace, Name, Punctuation, Name.Function)),
-            (r'\b(%s)\b' % '|'.join(keywords), Keyword),
-            (r'``([^`\n\r\t]|`[^`\n\r\t])+``', Name),
-            (r'(%s)' % '|'.join(keyopts), Operator),
-            (r'(%s|%s)?%s' % (infix_syms, prefix_syms, operators), Operator),
-            (r'\b(%s)\b' % '|'.join(word_operators), Operator.Word),
-            (r'\b(%s)\b' % '|'.join(primitives), Keyword.Type),
+            (r'\b(%s)\b' % '|'.join(keywords), Keyword), 
+            (r'``([^`\n\r\t]|`[^`\n\r\t])+``', Name), 
+            (r'(%s)' % '|'.join(keyopts), Operator), 
+            (r'(%s|%s)?%s' % (infix_syms, prefix_syms, operators), Operator), 
+            (r'\b(%s)\b' % '|'.join(word_operators), Operator.Word), 
+            (r'\b(%s)\b' % '|'.join(primitives), Keyword.Type), 
             (r'(#)([ \t]*)(if|endif|else|line|nowarn|light|\d+)\b(.*?)(\n)',
              bygroups(Comment.Preproc, Whitespace, Comment.Preproc, 
                  Comment.Preproc, Whitespace)),
-
-            (r"[^\W\d][\w']*", Name),
-
-            (r'\d[\d_]*[uU]?[yslLnQRZINGmM]?', Number.Integer),
-            (r'0[xX][\da-fA-F][\da-fA-F_]*[uU]?[yslLn]?[fF]?', Number.Hex),
-            (r'0[oO][0-7][0-7_]*[uU]?[yslLn]?', Number.Oct),
-            (r'0[bB][01][01_]*[uU]?[yslLn]?', Number.Bin),
-            (r'-?\d[\d_]*(.[\d_]*)?([eE][+\-]?\d[\d_]*)[fFmM]?',
-             Number.Float),
-
-            (r"'(?:(\\[\\\"'ntbr ])|(\\[0-9]{3})|(\\x[0-9a-fA-F]{2}))'B?",
-             String.Char),
-            (r"'.'", String.Char),
-            (r"'", Keyword),  # a stray quote is another syntax element
-
-            (r'@?"', String.Double, 'string'),
-
-            (r'[~?][a-z][\w\']*:', Name.Variable),
-        ],
-        'dotted': [
+ 
+            (r"[^\W\d][\w']*", Name), 
+ 
+            (r'\d[\d_]*[uU]?[yslLnQRZINGmM]?', Number.Integer), 
+            (r'0[xX][\da-fA-F][\da-fA-F_]*[uU]?[yslLn]?[fF]?', Number.Hex), 
+            (r'0[oO][0-7][0-7_]*[uU]?[yslLn]?', Number.Oct), 
+            (r'0[bB][01][01_]*[uU]?[yslLn]?', Number.Bin), 
+            (r'-?\d[\d_]*(.[\d_]*)?([eE][+\-]?\d[\d_]*)[fFmM]?', 
+             Number.Float), 
+ 
+            (r"'(?:(\\[\\\"'ntbr ])|(\\[0-9]{3})|(\\x[0-9a-fA-F]{2}))'B?", 
+             String.Char), 
+            (r"'.'", String.Char), 
+            (r"'", Keyword),  # a stray quote is another syntax element 
+ 
+            (r'@?"', String.Double, 'string'), 
+ 
+            (r'[~?][a-z][\w\']*:', Name.Variable), 
+        ], 
+        'dotted': [ 
             (r'\s+', Whitespace),
-            (r'\.', Punctuation),
-            (r'[A-Z][\w\']*(?=\s*\.)', Name.Namespace),
-            (r'[A-Z][\w\']*', Name, '#pop'),
-            (r'[a-z_][\w\']*', Name, '#pop'),
-            # e.g. dictionary index access
-            default('#pop'),
-        ],
-        'comment': [
-            (r'[^(*)@"]+', Comment),
-            (r'\(\*', Comment, '#push'),
-            (r'\*\)', Comment, '#pop'),
-            # comments cannot be closed within strings in comments
-            (r'@"', String, 'lstring'),
-            (r'"""', String, 'tqs'),
-            (r'"', String, 'string'),
-            (r'[(*)@]', Comment),
-        ],
-        'string': [
-            (r'[^\\"]+', String),
-            include('escape-sequence'),
-            (r'\\\n', String),
-            (r'\n', String),  # newlines are allowed in any string
-            (r'"B?', String, '#pop'),
-        ],
-        'lstring': [
-            (r'[^"]+', String),
-            (r'\n', String),
-            (r'""', String),
-            (r'"B?', String, '#pop'),
-        ],
-        'tqs': [
-            (r'[^"]+', String),
-            (r'\n', String),
-            (r'"""B?', String, '#pop'),
-            (r'"', String),
-        ],
-    }
+            (r'\.', Punctuation), 
+            (r'[A-Z][\w\']*(?=\s*\.)', Name.Namespace), 
+            (r'[A-Z][\w\']*', Name, '#pop'), 
+            (r'[a-z_][\w\']*', Name, '#pop'), 
+            # e.g. dictionary index access 
+            default('#pop'), 
+        ], 
+        'comment': [ 
+            (r'[^(*)@"]+', Comment), 
+            (r'\(\*', Comment, '#push'), 
+            (r'\*\)', Comment, '#pop'), 
+            # comments cannot be closed within strings in comments 
+            (r'@"', String, 'lstring'), 
+            (r'"""', String, 'tqs'), 
+            (r'"', String, 'string'), 
+            (r'[(*)@]', Comment), 
+        ], 
+        'string': [ 
+            (r'[^\\"]+', String), 
+            include('escape-sequence'), 
+            (r'\\\n', String), 
+            (r'\n', String),  # newlines are allowed in any string 
+            (r'"B?', String, '#pop'), 
+        ], 
+        'lstring': [ 
+            (r'[^"]+', String), 
+            (r'\n', String), 
+            (r'""', String), 
+            (r'"B?', String, '#pop'), 
+        ], 
+        'tqs': [ 
+            (r'[^"]+', String), 
+            (r'\n', String), 
+            (r'"""B?', String, '#pop'), 
+            (r'"', String), 
+        ], 
+    } 
 
     def analyse_text(text):
         """F# doesn't have that many unique features -- |> and <| are weak