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

60 files changed, 1704 insertions, 1704 deletions

diff --git a/library/cpp/accurate_accumulate/accurate_accumulate.h b/library/cpp/accurate_accumulate/accurate_accumulate.h
index dacced17e9..21ed77a7ce 100644
--- a/library/cpp/accurate_accumulate/accurate_accumulate.h
+++ b/library/cpp/accurate_accumulate/accurate_accumulate.h
@@ -11,7 +11,7 @@ public:
     using TValueType = TAccumulateType;
 
     template <typename TFloatType>
-    explicit TKahanAccumulator(const TFloatType x)
+    explicit TKahanAccumulator(const TFloatType x) 
         : Sum_(x)
         , Compensation_()
     {
@@ -30,12 +30,12 @@ public:
         return *this;
     }
 
-    TValueType Get() const {
+    TValueType Get() const { 
         return Sum_ + Compensation_;
     }
 
     template <typename TFloatType>
-    inline operator TFloatType() const {
+    inline operator TFloatType() const { 
         return Get();
     }
 
@@ -91,31 +91,31 @@ private:
 };
 
 template <typename TAccumulateType, typename TFloatType>
-inline const TKahanAccumulator<TAccumulateType>
+inline const TKahanAccumulator<TAccumulateType> 
 operator+(TKahanAccumulator<TAccumulateType> lhs, const TFloatType rhs) {
     return lhs += rhs;
 }
 
 template <typename TAccumulateType, typename TFloatType>
-inline const TKahanAccumulator<TAccumulateType>
+inline const TKahanAccumulator<TAccumulateType> 
 operator-(TKahanAccumulator<TAccumulateType> lhs, const TFloatType rhs) {
     return lhs -= rhs;
 }
 
 template <typename TAccumulateType, typename TFloatType>
-inline const TKahanAccumulator<TAccumulateType>
+inline const TKahanAccumulator<TAccumulateType> 
 operator*(TKahanAccumulator<TAccumulateType> lhs, const TFloatType rhs) {
     return lhs *= rhs;
 }
 
 template <typename TAccumulateType, typename TFloatType>
-inline const TKahanAccumulator<TAccumulateType>
+inline const TKahanAccumulator<TAccumulateType> 
 operator/(TKahanAccumulator<TAccumulateType> lhs, const TFloatType rhs) {
     return lhs /= rhs;
 }
 
 template <typename TAccumulatorType, typename It>
-static inline TAccumulatorType TypedFastAccumulate(It begin, It end) {
+static inline TAccumulatorType TypedFastAccumulate(It begin, It end) { 
     TAccumulatorType accumulator = TAccumulatorType();
 
     for (; begin + 15 < end; begin += 16) {
@@ -179,7 +179,7 @@ static inline TAccumulatorType TypedFastInnerProduct(It1 begin1, It1 end1, It2 b
 }
 
 template <typename It>
-static inline double FastAccumulate(It begin, It end) {
+static inline double FastAccumulate(It begin, It end) { 
     return TypedFastAccumulate<double>(begin, end);
 }
 
@@ -189,7 +189,7 @@ static inline double FastAccumulate(const TVector<T>& sequence) {
 }
 
 template <typename It>
-static inline double FastKahanAccumulate(It begin, It end) {
+static inline double FastKahanAccumulate(It begin, It end) { 
     return TypedFastAccumulate<TKahanAccumulator<double>>(begin, end);
 }
 
@@ -199,7 +199,7 @@ static inline double FastKahanAccumulate(const TVector<T>& sequence) {
 }
 
 template <typename It1, typename It2>
-static inline double FastInnerProduct(It1 begin1, It1 end1, It2 begin2) {
+static inline double FastInnerProduct(It1 begin1, It1 end1, It2 begin2) { 
     return TypedFastInnerProduct<double>(begin1, end1, begin2);
 }
 
@@ -210,7 +210,7 @@ static inline double FastInnerProduct(const TVector<T>& lhs, const TVector<T>& r
 }
 
 template <typename It1, typename It2>
-static inline double FastKahanInnerProduct(It1 begin1, It1 end1, It2 begin2) {
+static inline double FastKahanInnerProduct(It1 begin1, It1 end1, It2 begin2) { 
     return TypedFastInnerProduct<TKahanAccumulator<double>>(begin1, end1, begin2);
 }
 
diff --git a/library/cpp/accurate_accumulate/ya.make b/library/cpp/accurate_accumulate/ya.make
index 82630d19be..609a29fc35 100644
--- a/library/cpp/accurate_accumulate/ya.make
+++ b/library/cpp/accurate_accumulate/ya.make
@@ -1,6 +1,6 @@
 LIBRARY()
 
-OWNER(alex-sh)
+OWNER(alex-sh) 
 
 SRCS(
     accurate_accumulate.h
diff --git a/library/cpp/charset/codepage.h b/library/cpp/charset/codepage.h
index 30a02a4610..419f5746bc 100644
--- a/library/cpp/charset/codepage.h
+++ b/library/cpp/charset/codepage.h
@@ -199,7 +199,7 @@ struct Encoder {
             return 0;
         return (unsigned char)Table[(ch >> 8) & 255][ch & 255];
     }
-
+ 
     inline char Tr(wchar32 ch) const {
         char code = Code(ch);
         if (code == 0 && ch != 0)
@@ -211,7 +211,7 @@ struct Encoder {
     inline unsigned char operator[](wchar32 ch) const {
         return Tr(ch);
     }
-
+ 
     void Tr(const wchar32* in, char* out, size_t len) const;
     void Tr(const wchar32* in, char* out) const;
     char* DefaultPlane;
diff --git a/library/cpp/charset/codepage_ut.cpp b/library/cpp/charset/codepage_ut.cpp
index c3ac3ac478..7df4d27196 100644
--- a/library/cpp/charset/codepage_ut.cpp
+++ b/library/cpp/charset/codepage_ut.cpp
@@ -53,8 +53,8 @@ public:
     void TestToLower();
     void TestToUpper();
 
-    void TestCanEncode();
-
+    void TestCanEncode(); 
+ 
     inline void TestUpperLower() {
         const CodePage* cp = CodePageByCharset(CODES_ASCII);
         char tmp[100];
@@ -343,82 +343,82 @@ void TCodepageTest::TestToUpper() {
     ToUpper(data, n - 1);
     UNIT_ASSERT(strcmp(data, yandexUpperCase) == 0);
 }
-
-static void TestCanEncodeEmpty() {
-    TWtringBuf empty;
-    UNIT_ASSERT(CanBeEncoded(empty, CODES_WIN));
-    UNIT_ASSERT(CanBeEncoded(empty, CODES_YANDEX));
-    UNIT_ASSERT(CanBeEncoded(empty, CODES_UTF8));
-}
-
-static void TestCanEncodeEach(const TWtringBuf& text, ECharset encoding, bool expectedResult) {
-    // char by char
-    for (size_t i = 0; i < text.size(); ++i) {
-        if (CanBeEncoded(text.SubStr(i, 1), encoding) != expectedResult)
-            ythrow yexception() << "assertion failed: encoding " << NameByCharset(encoding)
+ 
+static void TestCanEncodeEmpty() { 
+    TWtringBuf empty; 
+    UNIT_ASSERT(CanBeEncoded(empty, CODES_WIN)); 
+    UNIT_ASSERT(CanBeEncoded(empty, CODES_YANDEX)); 
+    UNIT_ASSERT(CanBeEncoded(empty, CODES_UTF8)); 
+} 
+ 
+static void TestCanEncodeEach(const TWtringBuf& text, ECharset encoding, bool expectedResult) { 
+    // char by char 
+    for (size_t i = 0; i < text.size(); ++i) { 
+        if (CanBeEncoded(text.SubStr(i, 1), encoding) != expectedResult) 
+            ythrow yexception() << "assertion failed: encoding " << NameByCharset(encoding) 
                                 << " on '" << text.SubStr(i, 1) << "' (expected " << expectedResult << ")";
-    }
-    // whole text
-    UNIT_ASSERT_EQUAL(CanBeEncoded(text, encoding), expectedResult);
-}
-
-void TCodepageTest::TestCanEncode() {
-    TestCanEncodeEmpty();
-
+    } 
+    // whole text 
+    UNIT_ASSERT_EQUAL(CanBeEncoded(text, encoding), expectedResult); 
+} 
+ 
+void TCodepageTest::TestCanEncode() { 
+    TestCanEncodeEmpty(); 
+ 
     const TUtf16String lat = u"AaBbCcDdEeFfGgHhIiJjKkLlMmNnOoPpQqRrSsTtUuVvWwXxYyZz";
-    TestCanEncodeEach(lat, CODES_WIN, true);
-    TestCanEncodeEach(lat, CODES_YANDEX, true);
-    TestCanEncodeEach(lat, CODES_UTF8, true);
-
+    TestCanEncodeEach(lat, CODES_WIN, true); 
+    TestCanEncodeEach(lat, CODES_YANDEX, true); 
+    TestCanEncodeEach(lat, CODES_UTF8, true); 
+ 
     const TUtf16String rus = u"АаБбВвГгДдЕеЁёЖжЗзИиЙйКкЛлМмНнОоПпРрСсТтУуФфХхЦцЧчШшЩщЪъЫыЬьЭэЮюЯя";
-    TestCanEncodeEach(rus, CODES_WIN, true);
-    TestCanEncodeEach(rus, CODES_YANDEX, true);
-    TestCanEncodeEach(rus, CODES_UTF8, true);
-
+    TestCanEncodeEach(rus, CODES_WIN, true); 
+    TestCanEncodeEach(rus, CODES_YANDEX, true); 
+    TestCanEncodeEach(rus, CODES_UTF8, true); 
+ 
     const TUtf16String ukr = u"ҐґЄєІіЇї";
-    TestCanEncodeEach(ukr, CODES_WIN, true);
-    TestCanEncodeEach(ukr, CODES_YANDEX, true);
-    TestCanEncodeEach(ukr, CODES_UTF8, true);
-
+    TestCanEncodeEach(ukr, CODES_WIN, true); 
+    TestCanEncodeEach(ukr, CODES_YANDEX, true); 
+    TestCanEncodeEach(ukr, CODES_UTF8, true); 
+ 
     const TUtf16String pol = u"ĄĆĘŁŃÓŚŹŻąćęłńóśźż";
-    TestCanEncodeEach(pol, CODES_WIN, false);
-    TestCanEncodeEach(pol, CODES_YANDEX, true);
-    TestCanEncodeEach(pol, CODES_UTF_16BE, true);
-
+    TestCanEncodeEach(pol, CODES_WIN, false); 
+    TestCanEncodeEach(pol, CODES_YANDEX, true); 
+    TestCanEncodeEach(pol, CODES_UTF_16BE, true); 
+ 
     const TUtf16String ger = u"ÄäÖöÜüß";
-    TestCanEncodeEach(ger, CODES_WIN, false);
-    TestCanEncodeEach(ger, CODES_YANDEX, true);
-    TestCanEncodeEach(ger, CODES_UTF_16LE, true);
-
+    TestCanEncodeEach(ger, CODES_WIN, false); 
+    TestCanEncodeEach(ger, CODES_YANDEX, true); 
+    TestCanEncodeEach(ger, CODES_UTF_16LE, true); 
+ 
     const TUtf16String fra1 = u"éàèùâêîôûëïç"; // supported in yandex cp
     const TUtf16String fra2 = u"ÉÀÈÙÂÊÎÔÛËÏŸÿÇ";
     const TUtf16String fra3 = u"Æ挜";
-    TestCanEncodeEach(fra1 + fra2 + fra3, CODES_WIN, false);
-    TestCanEncodeEach(fra1, CODES_YANDEX, true);
-    TestCanEncodeEach(fra2 + fra3, CODES_YANDEX, false);
-    TestCanEncodeEach(fra1 + fra2 + fra3, CODES_UTF8, true);
-
+    TestCanEncodeEach(fra1 + fra2 + fra3, CODES_WIN, false); 
+    TestCanEncodeEach(fra1, CODES_YANDEX, true); 
+    TestCanEncodeEach(fra2 + fra3, CODES_YANDEX, false); 
+    TestCanEncodeEach(fra1 + fra2 + fra3, CODES_UTF8, true); 
+ 
     const TUtf16String kaz = u"ӘәҒғҚқҢңӨөҰұҮүҺһ";
-    TestCanEncodeEach(kaz, CODES_WIN, false);
-    TestCanEncodeEach(kaz, CODES_YANDEX, false);
-    TestCanEncodeEach(kaz, CODES_UTF8, true);
-    TestCanEncodeEach(kaz, CODES_KAZWIN, true);
-
+    TestCanEncodeEach(kaz, CODES_WIN, false); 
+    TestCanEncodeEach(kaz, CODES_YANDEX, false); 
+    TestCanEncodeEach(kaz, CODES_UTF8, true); 
+    TestCanEncodeEach(kaz, CODES_KAZWIN, true); 
+ 
     const TUtf16String tur1 = u"ĞİŞğş";
     const TUtf16String tur = tur1 + u"ı";
-    TestCanEncodeEach(tur, CODES_WIN, false);
-    TestCanEncodeEach(tur, CODES_YANDEX, false);
-    TestCanEncodeEach(tur, CODES_UTF8, true);
-
+    TestCanEncodeEach(tur, CODES_WIN, false); 
+    TestCanEncodeEach(tur, CODES_YANDEX, false); 
+    TestCanEncodeEach(tur, CODES_UTF8, true); 
+ 
     const TUtf16String chi = u"新隶体新隸體";
-    TestCanEncodeEach(chi, CODES_WIN, false);
-    TestCanEncodeEach(chi, CODES_YANDEX, false);
-    TestCanEncodeEach(chi, CODES_UTF8, true);
-    TestCanEncodeEach(chi, CODES_UTF_16LE, true);
-
+    TestCanEncodeEach(chi, CODES_WIN, false); 
+    TestCanEncodeEach(chi, CODES_YANDEX, false); 
+    TestCanEncodeEach(chi, CODES_UTF8, true); 
+    TestCanEncodeEach(chi, CODES_UTF_16LE, true); 
+ 
     const TUtf16String jap = u"漢字仮字交じり文";
-    TestCanEncodeEach(jap, CODES_WIN, false);
-    TestCanEncodeEach(jap, CODES_YANDEX, false);
-    TestCanEncodeEach(jap, CODES_UTF8, true);
-    TestCanEncodeEach(jap, CODES_UTF_16BE, true);
-}
+    TestCanEncodeEach(jap, CODES_WIN, false); 
+    TestCanEncodeEach(jap, CODES_YANDEX, false); 
+    TestCanEncodeEach(jap, CODES_UTF8, true); 
+    TestCanEncodeEach(jap, CODES_UTF_16BE, true); 
+} 
diff --git a/library/cpp/charset/wide.cpp b/library/cpp/charset/wide.cpp
index d12b293817..ae75f45355 100644
--- a/library/cpp/charset/wide.cpp
+++ b/library/cpp/charset/wide.cpp
@@ -1,18 +1,18 @@
 #include "wide.h"
 
-bool CanBeEncoded(TWtringBuf text, ECharset encoding) {
-    const size_t LEN = 16;
-    const size_t BUFSIZE = LEN * 4;
-    char encodeBuf[BUFSIZE];
-    wchar16 decodeBuf[BUFSIZE];
-
-    while (!text.empty()) {
-        TWtringBuf src = text.NextTokAt(LEN);
-        TStringBuf encoded = NDetail::NBaseOps::Recode(src, encodeBuf, encoding);
-        TWtringBuf decoded = NDetail::NBaseOps::Recode(encoded, decodeBuf, encoding);
-        if (decoded != src)
-            return false;
-    }
-
-    return true;
-}
+bool CanBeEncoded(TWtringBuf text, ECharset encoding) { 
+    const size_t LEN = 16; 
+    const size_t BUFSIZE = LEN * 4; 
+    char encodeBuf[BUFSIZE]; 
+    wchar16 decodeBuf[BUFSIZE]; 
+ 
+    while (!text.empty()) { 
+        TWtringBuf src = text.NextTokAt(LEN); 
+        TStringBuf encoded = NDetail::NBaseOps::Recode(src, encodeBuf, encoding); 
+        TWtringBuf decoded = NDetail::NBaseOps::Recode(encoded, decodeBuf, encoding); 
+        if (decoded != src) 
+            return false; 
+    } 
+ 
+    return true; 
+} 
diff --git a/library/cpp/charset/wide.h b/library/cpp/charset/wide.h
index 32d30e849e..c8f78a9eb4 100644
--- a/library/cpp/charset/wide.h
+++ b/library/cpp/charset/wide.h
@@ -47,61 +47,61 @@ inline void CharToWide(const char* text, size_t len, TCharType* dest, const Code
     }
 }
 
-namespace NDetail {
-    namespace NBaseOps {
-        // Template interface base recoding drivers, do not perform any memory management,
-        // do not care about buffer size, so supplied @dst
-        // should have enough room for the result (with proper reserve for the worst case)
-
-        // Depending on template params, perform conversion of single-byte/multi-byte/utf8 string to/from wide string.
-
+namespace NDetail { 
+    namespace NBaseOps { 
+        // Template interface base recoding drivers, do not perform any memory management, 
+        // do not care about buffer size, so supplied @dst 
+        // should have enough room for the result (with proper reserve for the worst case) 
+ 
+        // Depending on template params, perform conversion of single-byte/multi-byte/utf8 string to/from wide string. 
+ 
         template <typename TCharType>
         inline TBasicStringBuf<TCharType> RecodeSingleByteChar(const TStringBuf src, TCharType* dst, const CodePage& cp) {
             Y_ASSERT(cp.SingleByteCodepage());
             ::CharToWide(src.data(), src.size(), dst, cp);
             return TBasicStringBuf<TCharType>(dst, src.size());
-        }
-
+        } 
+ 
         template <typename TCharType>
         inline TStringBuf RecodeSingleByteChar(const TBasicStringBuf<TCharType> src, char* dst, const CodePage& cp) {
             Y_ASSERT(cp.SingleByteCodepage());
             ::WideToChar(src.data(), src.size(), dst, cp.CPEnum);
             return TStringBuf(dst, src.size());
-        }
-
+        } 
+ 
         template <typename TCharType>
         inline TBasicStringBuf<TCharType> RecodeMultiByteChar(const TStringBuf src, TCharType* dst, ECharset encoding) {
             Y_ASSERT(!NCodepagePrivate::NativeCodepage(encoding));
-            size_t read = 0;
-            size_t written = 0;
+            size_t read = 0; 
+            size_t written = 0; 
             ::NICONVPrivate::RecodeToUnicode(encoding, src.data(), dst, src.size(), src.size(), read, written);
             return TBasicStringBuf<TCharType>(dst, written);
-        }
-
+        } 
+ 
         template <typename TCharType>
         inline TStringBuf RecodeMultiByteChar(const TBasicStringBuf<TCharType> src, char* dst, ECharset encoding) {
             Y_ASSERT(!NCodepagePrivate::NativeCodepage(encoding));
-            size_t read = 0;
-            size_t written = 0;
+            size_t read = 0; 
+            size_t written = 0; 
             ::NICONVPrivate::RecodeFromUnicode(encoding, src.data(), dst, src.size(), src.size() * 3, read, written);
-            return TStringBuf(dst, written);
-        }
-
+            return TStringBuf(dst, written); 
+        } 
+ 
         template <typename TCharType>
         inline TBasicStringBuf<TCharType> RecodeUtf8(const TStringBuf src, TCharType* dst) {
-            size_t len = 0;
+            size_t len = 0; 
             if (!::UTF8ToWide(src.data(), src.size(), dst, len))
-                ythrow yexception() << "Invalid UTF8: \"" << src.SubStr(0, 50) << (src.size() > 50 ? "...\"" : "\"");
+                ythrow yexception() << "Invalid UTF8: \"" << src.SubStr(0, 50) << (src.size() > 50 ? "...\"" : "\""); 
             return TBasicStringBuf<TCharType>(dst, len);
-        }
-
+        } 
+ 
         template <typename TCharType>
         inline TStringBuf RecodeUtf8(const TBasicStringBuf<TCharType> src, char* dst) {
-            size_t len = 0;
+            size_t len = 0; 
             ::WideToUTF8(src.data(), src.size(), dst, len);
-            return TStringBuf(dst, len);
-        }
-
+            return TStringBuf(dst, len); 
+        } 
+ 
         // Select one of re-coding methods from above, based on provided @encoding
 
         template <typename TCharFrom, typename TCharTo>
@@ -115,73 +115,73 @@ namespace NDetail {
         }
 
     }
-
-    template <typename TCharFrom>
-    struct TRecodeTraits;
-
-    template <>
-    struct TRecodeTraits<char> {
+ 
+    template <typename TCharFrom> 
+    struct TRecodeTraits; 
+ 
+    template <> 
+    struct TRecodeTraits<char> { 
         using TCharTo = wchar16;
         using TStringBufTo = TWtringBuf;
         using TStringTo = TUtf16String;
         enum { ReserveSize = 4 }; // How many TCharFrom characters we should reserve for one TCharTo character in worst case
                                   // Here an unicode character can be converted up to 4 bytes of UTF8
-    };
-
-    template <>
-    struct TRecodeTraits<wchar16> {
+    }; 
+ 
+    template <> 
+    struct TRecodeTraits<wchar16> { 
         using TCharTo = char;
         using TStringBufTo = TStringBuf;
         using TStringTo = TString;
         enum { ReserveSize = 2 }; // possible surrogate pairs ?
-    };
-
-    // Operations with destination buffer where recoded string will be written
-    template <typename TResult>
-    struct TRecodeResultOps {
+    }; 
+ 
+    // Operations with destination buffer where recoded string will be written 
+    template <typename TResult> 
+    struct TRecodeResultOps { 
         // default implementation will work with TString and TUtf16String - 99% of usage
         using TResultChar = typename TResult::char_type;
-
-        static inline size_t Size(const TResult& dst) {
-            return dst.size();
-        }
-
-        static inline TResultChar* Reserve(TResult& dst, size_t len) {
-            dst.ReserveAndResize(len);
-            return dst.begin();
-        }
-
-        static inline void Truncate(TResult& dst, size_t len) {
-            dst.resize(len);
-        }
-    };
-
-    // Main template interface for recoding in both directions
-
-    template <typename TCharFrom, typename TResult>
+ 
+        static inline size_t Size(const TResult& dst) { 
+            return dst.size(); 
+        } 
+ 
+        static inline TResultChar* Reserve(TResult& dst, size_t len) { 
+            dst.ReserveAndResize(len); 
+            return dst.begin(); 
+        } 
+ 
+        static inline void Truncate(TResult& dst, size_t len) { 
+            dst.resize(len); 
+        } 
+    }; 
+ 
+    // Main template interface for recoding in both directions 
+ 
+    template <typename TCharFrom, typename TResult> 
     typename TRecodeTraits<TCharFrom>::TStringBufTo Recode(const TBasicStringBuf<TCharFrom> src, TResult& dst, ECharset encoding) {
         using TCharTo = typename TRecodeTraits<TCharFrom>::TCharTo;
-        // make enough room for re-coded string
-        TCharTo* dstbuf = TRecodeResultOps<TResult>::Reserve(dst, src.size() * TRecodeTraits<TCharTo>::ReserveSize);
-        // do re-coding
+        // make enough room for re-coded string 
+        TCharTo* dstbuf = TRecodeResultOps<TResult>::Reserve(dst, src.size() * TRecodeTraits<TCharTo>::ReserveSize); 
+        // do re-coding 
         TBasicStringBuf<TCharTo> res = NBaseOps::Recode(src, dstbuf, encoding);
-        // truncate result back to proper size
-        TRecodeResultOps<TResult>::Truncate(dst, res.size());
-        return res;
-    }
-
-    // appending version of Recode()
-    template <typename TCharFrom, typename TResult>
+        // truncate result back to proper size 
+        TRecodeResultOps<TResult>::Truncate(dst, res.size()); 
+        return res; 
+    } 
+ 
+    // appending version of Recode() 
+    template <typename TCharFrom, typename TResult> 
     typename TRecodeTraits<TCharFrom>::TStringBufTo RecodeAppend(const TBasicStringBuf<TCharFrom> src, TResult& dst, ECharset encoding) {
         using TCharTo = typename TRecodeTraits<TCharFrom>::TCharTo;
-        size_t dstOrigSize = TRecodeResultOps<TResult>::Size(dst);
-        TCharTo* dstbuf = TRecodeResultOps<TResult>::Reserve(dst, dstOrigSize + src.size() * TRecodeTraits<TCharTo>::ReserveSize);
+        size_t dstOrigSize = TRecodeResultOps<TResult>::Size(dst); 
+        TCharTo* dstbuf = TRecodeResultOps<TResult>::Reserve(dst, dstOrigSize + src.size() * TRecodeTraits<TCharTo>::ReserveSize); 
         TBasicStringBuf<TCharTo> appended = NBaseOps::Recode(src, dstbuf + dstOrigSize, encoding);
-        size_t dstFinalSize = dstOrigSize + appended.size();
-        TRecodeResultOps<TResult>::Truncate(dst, dstFinalSize);
+        size_t dstFinalSize = dstOrigSize + appended.size(); 
+        TRecodeResultOps<TResult>::Truncate(dst, dstFinalSize); 
         return TBasicStringBuf<TCharTo>(dstbuf, dstFinalSize);
-    }
-
+    } 
+ 
     // special implementation for robust utf8 functions
     template <typename TResult>
     TWtringBuf RecodeUTF8Robust(const TStringBuf src, TResult& dst) {
@@ -197,31 +197,31 @@ namespace NDetail {
         return TWtringBuf(dstbuf, written);
     }
 
-    template <typename TCharFrom>
+    template <typename TCharFrom> 
     inline typename TRecodeTraits<TCharFrom>::TStringTo Recode(const TBasicStringBuf<TCharFrom> src, ECharset encoding) {
-        typename TRecodeTraits<TCharFrom>::TStringTo res;
-        Recode<TCharFrom>(src, res, encoding);
-        return res;
-    }
+        typename TRecodeTraits<TCharFrom>::TStringTo res; 
+        Recode<TCharFrom>(src, res, encoding); 
+        return res; 
+    } 
 }
-
-// Write result into @dst. Return string-buffer pointing to re-coded content of @dst.
-
+ 
+// Write result into @dst. Return string-buffer pointing to re-coded content of @dst. 
+ 
 template <bool robust>
 inline TWtringBuf CharToWide(const TStringBuf src, TUtf16String& dst, ECharset encoding) {
     if (robust && CODES_UTF8 == encoding)
         return ::NDetail::RecodeUTF8Robust(src, dst);
     return ::NDetail::Recode<char>(src, dst, encoding);
-}
-
+} 
+ 
 inline TWtringBuf CharToWide(const TStringBuf src, TUtf16String& dst, ECharset encoding) {
     return ::NDetail::Recode<char>(src, dst, encoding);
 }
 
 inline TStringBuf WideToChar(const TWtringBuf src, TString& dst, ECharset encoding) {
     return ::NDetail::Recode<wchar16>(src, dst, encoding);
-}
-
+} 
+ 
 //! calls either to @c WideToUTF8 or @c WideToChar depending on the encoding type
 inline TString WideToChar(const wchar16* text, size_t len, ECharset enc) {
     if (NCodepagePrivate::NativeCodepage(enc)) {
@@ -301,6 +301,6 @@ inline TUtf16String CharToWide(const TStringBuf s, const CodePage& cp) {
     return CharToWide(s.data(), s.size(), cp);
 }
 
-// true if @text can be fully encoded to specified @encoding,
-// with possibility to recover exact original text after decoding
-bool CanBeEncoded(TWtringBuf text, ECharset encoding);
+// true if @text can be fully encoded to specified @encoding, 
+// with possibility to recover exact original text after decoding 
+bool CanBeEncoded(TWtringBuf text, ECharset encoding); 
diff --git a/library/cpp/charset/wide_ut.cpp b/library/cpp/charset/wide_ut.cpp
index 78947d51ba..63112f432c 100644
--- a/library/cpp/charset/wide_ut.cpp
+++ b/library/cpp/charset/wide_ut.cpp
@@ -9,7 +9,7 @@
 #include <util/generic/hash_set.h>
 
 #include <algorithm>
-
+ 
 namespace {
     //! three UTF8 encoded russian letters (A, B, V)
     const char yandexCyrillicAlphabet[] =
@@ -143,8 +143,8 @@ public:
     void TestCharToWide();
     void TestWideToChar();
     void TestYandexEncoding();
-    void TestRecodeIntoString();
-    void TestRecodeAppend();
+    void TestRecodeIntoString(); 
+    void TestRecodeAppend(); 
     void TestRecode();
     void TestUnicodeLimit();
 };
@@ -228,114 +228,114 @@ void TConversionTest::TestYandexEncoding() {
     }
 }
 
-void TConversionTest::TestRecodeIntoString() {
+void TConversionTest::TestRecodeIntoString() { 
     TString sYandex(UnicodeText.size() * 4, 'x');
     const char* sdata = sYandex.data();
-    TStringBuf sres = NDetail::Recode<wchar16>(UnicodeText, sYandex, CODES_YANDEX);
+    TStringBuf sres = NDetail::Recode<wchar16>(UnicodeText, sYandex, CODES_YANDEX); 
     UNIT_ASSERT(sYandex == YandexText); // same content
     UNIT_ASSERT(sYandex.data() == sdata);     // reserved buffer reused
     UNIT_ASSERT(sYandex.data() == sres.data());     // same buffer
     UNIT_ASSERT(sYandex.size() == sres.size());     // same size
     TEST_WCHAR32(sYandex, UnicodeText, CODES_YANDEX);
-
+ 
     TUtf16String sUnicode;
-    sUnicode.reserve(YandexText.size() * 4);
+    sUnicode.reserve(YandexText.size() * 4); 
     const wchar16* wdata = sUnicode.data();
-    TWtringBuf wres = NDetail::Recode<char>(YandexText, sUnicode, CODES_YANDEX);
+    TWtringBuf wres = NDetail::Recode<char>(YandexText, sUnicode, CODES_YANDEX); 
     UNIT_ASSERT(sUnicode == UnicodeText); // same content
     UNIT_ASSERT(sUnicode.data() == wdata);      // reserved buffer reused
     UNIT_ASSERT(sUnicode.data() == wres.data());      // same buffer
     UNIT_ASSERT(sUnicode.size() == wres.size());      // same size
-
+ 
     TString sUtf8 = " ";
-    size_t scap = sUtf8.capacity();
-    sres = NDetail::Recode<wchar16>(UnicodeText, sUtf8, CODES_UTF8);
+    size_t scap = sUtf8.capacity(); 
+    sres = NDetail::Recode<wchar16>(UnicodeText, sUtf8, CODES_UTF8); 
     UNIT_ASSERT(sUtf8 == UTF8Text);       // same content
     UNIT_ASSERT(sUtf8.capacity() > scap); // increased buffer capacity (supplied was too small)
     UNIT_ASSERT(sUtf8.data() == sres.data());         // same buffer
     UNIT_ASSERT(sUtf8.size() == sres.size());         // same size
     TEST_WCHAR32(sUtf8, UnicodeText, CODES_UTF8);
-
-    sUnicode.clear();
+ 
+    sUnicode.clear(); 
     wdata = sUnicode.data();
     TUtf16String copy = sUnicode; // increase ref-counter
-    wres = NDetail::Recode<char>(UTF8Text, sUnicode, CODES_UTF8);
+    wres = NDetail::Recode<char>(UTF8Text, sUnicode, CODES_UTF8); 
     UNIT_ASSERT(sUnicode == UnicodeText); // same content
 #ifndef TSTRING_IS_STD_STRING
     UNIT_ASSERT(sUnicode.data() != wdata);      // re-allocated (shared buffer supplied)
     UNIT_ASSERT(sUnicode.data() == wres.data());      // same buffer
 #endif
     UNIT_ASSERT(sUnicode.size() == wres.size());      // same content
-}
-
+} 
+ 
 static TString GenerateJunk(size_t seed) {
     TString res;
-    size_t hash = NumericHash(seed);
-    size_t size = hash % 1024;
-    res.reserve(size);
-    for (size_t i = 0; i < size; ++i)
-        res += static_cast<char>(NumericHash(hash + i) % 256);
-    return res;
-}
-
-void TConversionTest::TestRecodeAppend() {
-    {
+    size_t hash = NumericHash(seed); 
+    size_t size = hash % 1024; 
+    res.reserve(size); 
+    for (size_t i = 0; i < size; ++i) 
+        res += static_cast<char>(NumericHash(hash + i) % 256); 
+    return res; 
+} 
+ 
+void TConversionTest::TestRecodeAppend() { 
+    { 
         TString s1, s2;
         NDetail::RecodeAppend<wchar16>(TUtf16String(), s1, CODES_YANDEX);
-        UNIT_ASSERT(s1.empty());
-
-        NDetail::RecodeAppend<wchar16>(UnicodeText, s1, CODES_WIN);
-        s2 += WideToChar(UnicodeText, CODES_WIN);
-        UNIT_ASSERT_EQUAL(s1, s2);
-
-        NDetail::RecodeAppend<wchar16>(UnicodeText, s1, CODES_YANDEX);
-        s2 += WideToChar(UnicodeText, CODES_YANDEX);
-        UNIT_ASSERT_EQUAL(s1, s2);
-
+        UNIT_ASSERT(s1.empty()); 
+ 
+        NDetail::RecodeAppend<wchar16>(UnicodeText, s1, CODES_WIN); 
+        s2 += WideToChar(UnicodeText, CODES_WIN); 
+        UNIT_ASSERT_EQUAL(s1, s2); 
+ 
+        NDetail::RecodeAppend<wchar16>(UnicodeText, s1, CODES_YANDEX); 
+        s2 += WideToChar(UnicodeText, CODES_YANDEX); 
+        UNIT_ASSERT_EQUAL(s1, s2); 
+ 
         NDetail::RecodeAppend<wchar16>(TUtf16String(), s1, CODES_YANDEX);
-        UNIT_ASSERT_EQUAL(s1, s2);
-
-        NDetail::RecodeAppend<wchar16>(UnicodeText, s1, CODES_UTF8);
+        UNIT_ASSERT_EQUAL(s1, s2); 
+ 
+        NDetail::RecodeAppend<wchar16>(UnicodeText, s1, CODES_UTF8); 
         s2 += WideToUTF8(UnicodeText);
-        UNIT_ASSERT_EQUAL(s1, s2);
+        UNIT_ASSERT_EQUAL(s1, s2); 
 
-        for (size_t i = 0; i < 100; ++i) {
+        for (size_t i = 0; i < 100; ++i) { 
             TUtf16String junk = CharToWide(GenerateJunk(i), CODES_YANDEX);
-            NDetail::RecodeAppend<wchar16>(junk, s1, CODES_UTF8);
+            NDetail::RecodeAppend<wchar16>(junk, s1, CODES_UTF8); 
             s2 += WideToUTF8(junk);
-            UNIT_ASSERT_EQUAL(s1, s2);
-        }
-    }
-
-    {
+            UNIT_ASSERT_EQUAL(s1, s2); 
+        } 
+    } 
+ 
+    { 
         TUtf16String s1, s2;
         NDetail::RecodeAppend<char>(TString(), s1, CODES_YANDEX);
-        UNIT_ASSERT(s1.empty());
-
-        NDetail::RecodeAppend<char>(YandexText, s1, CODES_WIN);
-        s2 += CharToWide(YandexText, CODES_WIN);
-        UNIT_ASSERT_EQUAL(s1, s2);
-
-        NDetail::RecodeAppend<char>(YandexText, s1, CODES_YANDEX);
-        s2 += CharToWide(YandexText, CODES_YANDEX);
-        UNIT_ASSERT_EQUAL(s1, s2);
-
+        UNIT_ASSERT(s1.empty()); 
+ 
+        NDetail::RecodeAppend<char>(YandexText, s1, CODES_WIN); 
+        s2 += CharToWide(YandexText, CODES_WIN); 
+        UNIT_ASSERT_EQUAL(s1, s2); 
+ 
+        NDetail::RecodeAppend<char>(YandexText, s1, CODES_YANDEX); 
+        s2 += CharToWide(YandexText, CODES_YANDEX); 
+        UNIT_ASSERT_EQUAL(s1, s2); 
+ 
         NDetail::RecodeAppend<char>(TString(), s1, CODES_YANDEX);
-        UNIT_ASSERT_EQUAL(s1, s2);
+        UNIT_ASSERT_EQUAL(s1, s2); 
 
-        NDetail::RecodeAppend<char>(UTF8Text, s1, CODES_UTF8);
+        NDetail::RecodeAppend<char>(UTF8Text, s1, CODES_UTF8); 
         s2 += UTF8ToWide(UTF8Text);
-        UNIT_ASSERT_EQUAL(s1, s2);
-
-        for (size_t i = 0; i < 100; ++i) {
+        UNIT_ASSERT_EQUAL(s1, s2); 
+ 
+        for (size_t i = 0; i < 100; ++i) { 
             TString junk = GenerateJunk(i);
-            NDetail::RecodeAppend<char>(junk, s1, CODES_YANDEX);
-            s2 += CharToWide(junk, CODES_YANDEX);
-            UNIT_ASSERT_EQUAL(s1, s2);
-        }
-    }
-}
-
+            NDetail::RecodeAppend<char>(junk, s1, CODES_YANDEX); 
+            s2 += CharToWide(junk, CODES_YANDEX); 
+            UNIT_ASSERT_EQUAL(s1, s2); 
+        } 
+    } 
+} 
+ 
 template <>
 void Out<RECODE_RESULT>(IOutputStream& out, RECODE_RESULT val) {
     out << int(val);
diff --git a/library/cpp/containers/comptrie/comptrie_impl.h b/library/cpp/containers/comptrie/comptrie_impl.h
index f41c38311a..c36da12e13 100644
--- a/library/cpp/containers/comptrie/comptrie_impl.h
+++ b/library/cpp/containers/comptrie/comptrie_impl.h
@@ -26,10 +26,10 @@ namespace NCompactTrie {
         return (sizeof(T) - 1) * 8;
     }
 
-    static inline bool IsEpsilonLink(const char flags) {
-        return !(flags & (MT_FINAL | MT_NEXT));
-    }
-
+    static inline bool IsEpsilonLink(const char flags) { 
+        return !(flags & (MT_FINAL | MT_NEXT)); 
+    } 
+ 
     static inline void TraverseEpsilon(const char*& datapos) {
         const char flags = *datapos;
         if (!IsEpsilonLink(flags)) {
@@ -41,14 +41,14 @@ namespace NCompactTrie {
         datapos += offset;
     }
 
-    static inline size_t LeftOffsetLen(const char flags) {
-        return (flags >> MT_LEFTSHIFT) & MT_SIZEMASK;
-    }
-
-    static inline size_t RightOffsetLen(const char flags) {
-        return flags & MT_SIZEMASK;
-    }
-
+    static inline size_t LeftOffsetLen(const char flags) { 
+        return (flags >> MT_LEFTSHIFT) & MT_SIZEMASK; 
+    } 
+ 
+    static inline size_t RightOffsetLen(const char flags) { 
+        return flags & MT_SIZEMASK; 
+    } 
+ 
     void ShowProgress(size_t n); // just print dots
 }
 
@@ -100,82 +100,82 @@ namespace NCompactTrie {
         os.Write(buf, len);
         return len;
     }
-
-    // Unpack the offset to the next node. The encoding scheme can store offsets
-    // up to 7 bytes; whether they fit into size_t is another issue.
+ 
+    // Unpack the offset to the next node. The encoding scheme can store offsets 
+    // up to 7 bytes; whether they fit into size_t is another issue. 
     Y_FORCE_INLINE size_t UnpackOffset(const char* p, size_t len) {
-        size_t result = 0;
-
-        while (len--)
-            result = ((result << 8) | (*(p++) & 0xFF));
-
-        return result;
-    }
-
-    // Auxiliary function: consumes one character from the input. Advances the data pointer
-    // to the position immediately preceding the value for the link just traversed (if any);
-    // returns flags associated with the link. If no arc with the required label is present,
-    // zeroes the data pointer.
+        size_t result = 0; 
+ 
+        while (len--) 
+            result = ((result << 8) | (*(p++) & 0xFF)); 
+ 
+        return result; 
+    } 
+ 
+    // Auxiliary function: consumes one character from the input. Advances the data pointer 
+    // to the position immediately preceding the value for the link just traversed (if any); 
+    // returns flags associated with the link. If no arc with the required label is present, 
+    // zeroes the data pointer. 
     Y_FORCE_INLINE char LeapByte(const char*& datapos, const char* dataend, char label) {
-        while (datapos < dataend) {
-            size_t offsetlength, offset;
-            const char* startpos = datapos;
-            char flags = *(datapos++);
-
-            if (IsEpsilonLink(flags)) {
-                // Epsilon link - jump to the specified offset without further checks.
-                // These links are created during minimization: original uncompressed
-                // tree does not need them. (If we find a way to package 3 offset lengths
-                // into 1 byte, we could get rid of them; but it looks like they do no harm.
+        while (datapos < dataend) { 
+            size_t offsetlength, offset; 
+            const char* startpos = datapos; 
+            char flags = *(datapos++); 
+ 
+            if (IsEpsilonLink(flags)) { 
+                // Epsilon link - jump to the specified offset without further checks. 
+                // These links are created during minimization: original uncompressed 
+                // tree does not need them. (If we find a way to package 3 offset lengths 
+                // into 1 byte, we could get rid of them; but it looks like they do no harm. 
                 Y_ASSERT(datapos < dataend);
-                offsetlength = flags & MT_SIZEMASK;
-                offset = UnpackOffset(datapos, offsetlength);
-                if (!offset)
-                    break;
-                datapos = startpos + offset;
-
-                continue;
-            }
-
-            char ch = *(datapos++);
-
-            // Left branch
-            offsetlength = LeftOffsetLen(flags);
-            if ((unsigned char)label < (unsigned char)ch) {
-                offset = UnpackOffset(datapos, offsetlength);
-                if (!offset)
-                    break;
-
-                datapos = startpos + offset;
-
-                continue;
-            }
-
-            datapos += offsetlength;
-
-            // Right branch
-            offsetlength = RightOffsetLen(flags);
-            if ((unsigned char)label > (unsigned char)ch) {
-                offset = UnpackOffset(datapos, offsetlength);
-
-                if (!offset)
-                    break;
-
-                datapos = startpos + offset;
-
-                continue;
-            }
-
-            // Got a match; return position right before the contents for the label
-            datapos += offsetlength;
-            return flags;
-        }
-
-        // if we got here, we're past the dataend - bail out ASAP
+                offsetlength = flags & MT_SIZEMASK; 
+                offset = UnpackOffset(datapos, offsetlength); 
+                if (!offset) 
+                    break; 
+                datapos = startpos + offset; 
+ 
+                continue; 
+            } 
+ 
+            char ch = *(datapos++); 
+ 
+            // Left branch 
+            offsetlength = LeftOffsetLen(flags); 
+            if ((unsigned char)label < (unsigned char)ch) { 
+                offset = UnpackOffset(datapos, offsetlength); 
+                if (!offset) 
+                    break; 
+ 
+                datapos = startpos + offset; 
+ 
+                continue; 
+            } 
+ 
+            datapos += offsetlength; 
+ 
+            // Right branch 
+            offsetlength = RightOffsetLen(flags); 
+            if ((unsigned char)label > (unsigned char)ch) { 
+                offset = UnpackOffset(datapos, offsetlength); 
+ 
+                if (!offset) 
+                    break; 
+ 
+                datapos = startpos + offset; 
+ 
+                continue; 
+            } 
+ 
+            // Got a match; return position right before the contents for the label 
+            datapos += offsetlength; 
+            return flags; 
+        } 
+ 
+        // if we got here, we're past the dataend - bail out ASAP 
         datapos = nullptr;
-        return 0;
-    }
-
+        return 0; 
+    } 
+ 
     // Auxiliary function: consumes one (multibyte) symbol from the input.
     // Advances the data pointer to the root of the subtrie beginning after the symbol,
     // zeroes it if this subtrie is empty.
diff --git a/library/cpp/containers/comptrie/comptrie_trie.h b/library/cpp/containers/comptrie/comptrie_trie.h
index 40ec1e52b3..9bf4d61825 100644
--- a/library/cpp/containers/comptrie/comptrie_trie.h
+++ b/library/cpp/containers/comptrie/comptrie_trie.h
@@ -127,7 +127,7 @@ public:
         return FindLongestPrefix(key.data(), key.size(), prefixLen, value, hasNext);
     }
 
-    // Return trie, containing all tails for the given key
+    // Return trie, containing all tails for the given key 
     inline TCompactTrie<T, D, S> FindTails(const TSymbol* key, size_t keylen) const;
     TCompactTrie<T, D, S> FindTails(const TKeyBuf& key) const {
         return FindTails(key.data(), key.size());
@@ -137,10 +137,10 @@ public:
         return FindTails(key.data(), key.size(), res);
     }
 
-    // same as FindTails(&key, 1), a bit faster
-    // return false, if no arc with @label exists
+    // same as FindTails(&key, 1), a bit faster 
+    // return false, if no arc with @label exists 
     inline bool FindTails(TSymbol label, TCompactTrie<T, D, S>& res) const;
-
+ 
     class TConstIterator {
     private:
         typedef NCompactTrie::TOpaqueTrieIterator TOpaqueTrieIterator;
@@ -343,10 +343,10 @@ void TCompactTrie<T, D, S>::FindPhrases(const TSymbol* key, size_t keylen, TPhra
 template <class T, class D, class S>
 inline TCompactTrie<T, D, S> TCompactTrie<T, D, S>::FindTails(const TSymbol* key, size_t keylen) const {
     TCompactTrie<T, D, S> ret;
-    FindTails(key, keylen, ret);
-    return ret;
-}
-
+    FindTails(key, keylen, ret); 
+    return ret; 
+} 
+ 
 template <class T, class D, class S>
 bool TCompactTrie<T, D, S>::FindTails(const TSymbol* key, size_t keylen, TCompactTrie<T, D, S>& res) const {
     using namespace NCompactTrie;
@@ -354,11 +354,11 @@ bool TCompactTrie<T, D, S>::FindTails(const TSymbol* key, size_t keylen, TCompac
     size_t len = DataHolder.Length();
 
     if (!key || !len)
-        return false;
+        return false; 
 
     if (!keylen) {
-        res = *this;
-        return true;
+        res = *this; 
+        return true; 
     }
 
     const char* datastart = DataHolder.AsCharPtr();
@@ -386,35 +386,35 @@ bool TCompactTrie<T, D, S>::FindTails(const TSymbol* key, size_t keylen, TCompac
         }
     }
 
-    return false;
+    return false; 
 }
 
 template <class T, class D, class S>
 inline bool TCompactTrie<T, D, S>::FindTails(TSymbol label, TCompactTrie<T, D, S>& res) const {
-    using namespace NCompactTrie;
-
+    using namespace NCompactTrie; 
+ 
     const size_t len = DataHolder.Length();
-    if (!len)
-        return false;
-
+    if (!len) 
+        return false; 
+ 
     const char* datastart = DataHolder.AsCharPtr();
-    const char* dataend = datastart + len;
-    const char* datapos = datastart;
+    const char* dataend = datastart + len; 
+    const char* datapos = datastart; 
     const char* value = nullptr;
 
     if (!NCompactTrie::Advance(datapos, dataend, value, label, Packer))
         return false;
-
+ 
     if (datapos) {
         Y_ASSERT(datapos >= datastart);
         res = TCompactTrie<T, D, S>(TBlob::NoCopy(datapos, dataend - datapos), value);
     } else {
         res = TCompactTrie<T, D, S>(value);
-    }
-
+    } 
+ 
     return true;
-}
-
+} 
+ 
 template <class T, class D, class S>
 typename TCompactTrie<T, D, S>::TConstIterator TCompactTrie<T, D, S>::Begin() const {
     NCompactTrie::TOpaqueTrie self(DataHolder.AsCharPtr(), DataHolder.Length(), Skipper);
@@ -495,30 +495,30 @@ bool TCompactTrie<T, D, S>::LookupLongestPrefix(const TSymbol* key, size_t keyle
 
     const char* const dataend = datapos + len;
 
-    const T* keyend = key + keylen;
+    const T* keyend = key + keylen; 
     while (key != keyend) {
         T label = *(key++);
-        for (i64 i = (i64)ExtraBits<TSymbol>(); i >= 0; i -= 8) {
+        for (i64 i = (i64)ExtraBits<TSymbol>(); i >= 0; i -= 8) { 
             const char flags = LeapByte(datapos, dataend, (char)(label >> i));
-            if (!datapos) {
-                return found; // no such arc
-            }
+            if (!datapos) { 
+                return found; // no such arc 
+            } 
 
             Y_ASSERT(datapos <= dataend);
-            if ((flags & MT_FINAL)) {
+            if ((flags & MT_FINAL)) { 
                 prefixLen = keylen - (keyend - key) - (i ? 1 : 0);
                 valuepos = datapos;
                 hasNext = flags & MT_NEXT;
                 found = true;
 
-                if (!i && key == keyend) { // last byte, and got a match
-                    return found;
-                }
-                datapos += Packer.SkipLeaf(datapos); // skip intermediate leaf nodes
-            }
+                if (!i && key == keyend) { // last byte, and got a match 
+                    return found; 
+                } 
+                datapos += Packer.SkipLeaf(datapos); // skip intermediate leaf nodes 
+            } 
 
-            if (!(flags & MT_NEXT)) {
-                return found; // no further way
+            if (!(flags & MT_NEXT)) { 
+                return found; // no further way 
             }
         }
     }
diff --git a/library/cpp/containers/comptrie/comptrie_ut.cpp b/library/cpp/containers/comptrie/comptrie_ut.cpp
index 74bee09b5d..1a8dca293a 100644
--- a/library/cpp/containers/comptrie/comptrie_ut.cpp
+++ b/library/cpp/containers/comptrie/comptrie_ut.cpp
@@ -21,7 +21,7 @@
 #include <util/string/cast.h>
 
 #include "comptrie.h"
-#include "set.h"
+#include "set.h" 
 #include "first_symbol_iterator.h"
 #include "search_iterator.h"
 #include "pattern_searcher.h"
@@ -74,7 +74,7 @@ private:
     UNIT_TEST(TestIterateEmptyKey);
 
     UNIT_TEST(TestTrieSet);
-
+ 
     UNIT_TEST(TestTrieForVectorInt64);
     UNIT_TEST(TestTrieForListInt64);
     UNIT_TEST(TestTrieForSetInt64);
@@ -209,8 +209,8 @@ public:
     void TestClear();
 
     void TestIterateEmptyKey();
-
-    void TestTrieSet();
+ 
+    void TestTrieSet(); 
 
     void TestTrieForVectorInt64();
     void TestTrieForListInt64();
@@ -1060,48 +1060,48 @@ void TCompactTrieTest::TestIterateEmptyKey() {
     UNIT_ASSERT(it.GetValue() == 1);
 }
 
-void TCompactTrieTest::TestTrieSet() {
-    TBuffer buffer;
-    {
-        TCompactTrieSet<char>::TBuilder builder;
-        UNIT_ASSERT(builder.Add("a", 0));
-        UNIT_ASSERT(builder.Add("ab", 1));
-        UNIT_ASSERT(builder.Add("abc", 1));
-        UNIT_ASSERT(builder.Add("abcd", 0));
-        UNIT_ASSERT(!builder.Add("abcd", 1));
-
-        TBufferStream stream(buffer);
-        builder.Save(stream);
-    }
-
-    TCompactTrieSet<char> set(TBlob::FromBuffer(buffer));
-    UNIT_ASSERT(set.Has("a"));
-    UNIT_ASSERT(set.Has("ab"));
-    UNIT_ASSERT(set.Has("abc"));
-    UNIT_ASSERT(set.Has("abcd"));
-    UNIT_ASSERT(!set.Has("abcde"));
-    UNIT_ASSERT(!set.Has("aa"));
-    UNIT_ASSERT(!set.Has("b"));
-    UNIT_ASSERT(!set.Has(""));
-
-    TCompactTrieSet<char> tails;
-    UNIT_ASSERT(set.FindTails("a", tails));
-    UNIT_ASSERT(tails.Has("b"));
-    UNIT_ASSERT(tails.Has("bcd"));
-    UNIT_ASSERT(!tails.Has("ab"));
-    UNIT_ASSERT(!set.Has(""));
-
-    TCompactTrieSet<char> empty;
-    UNIT_ASSERT(set.FindTails("abcd", empty));
-    UNIT_ASSERT(!empty.Has("a"));
-    UNIT_ASSERT(!empty.Has("b"));
-    UNIT_ASSERT(!empty.Has("c"));
-    UNIT_ASSERT(!empty.Has("d"));
-    UNIT_ASSERT(!empty.Has("d"));
-
+void TCompactTrieTest::TestTrieSet() { 
+    TBuffer buffer; 
+    { 
+        TCompactTrieSet<char>::TBuilder builder; 
+        UNIT_ASSERT(builder.Add("a", 0)); 
+        UNIT_ASSERT(builder.Add("ab", 1)); 
+        UNIT_ASSERT(builder.Add("abc", 1)); 
+        UNIT_ASSERT(builder.Add("abcd", 0)); 
+        UNIT_ASSERT(!builder.Add("abcd", 1)); 
+ 
+        TBufferStream stream(buffer); 
+        builder.Save(stream); 
+    } 
+ 
+    TCompactTrieSet<char> set(TBlob::FromBuffer(buffer)); 
+    UNIT_ASSERT(set.Has("a")); 
+    UNIT_ASSERT(set.Has("ab")); 
+    UNIT_ASSERT(set.Has("abc")); 
+    UNIT_ASSERT(set.Has("abcd")); 
+    UNIT_ASSERT(!set.Has("abcde")); 
+    UNIT_ASSERT(!set.Has("aa")); 
+    UNIT_ASSERT(!set.Has("b")); 
+    UNIT_ASSERT(!set.Has("")); 
+ 
+    TCompactTrieSet<char> tails; 
+    UNIT_ASSERT(set.FindTails("a", tails)); 
+    UNIT_ASSERT(tails.Has("b")); 
+    UNIT_ASSERT(tails.Has("bcd")); 
+    UNIT_ASSERT(!tails.Has("ab")); 
+    UNIT_ASSERT(!set.Has("")); 
+ 
+    TCompactTrieSet<char> empty; 
+    UNIT_ASSERT(set.FindTails("abcd", empty)); 
+    UNIT_ASSERT(!empty.Has("a")); 
+    UNIT_ASSERT(!empty.Has("b")); 
+    UNIT_ASSERT(!empty.Has("c")); 
+    UNIT_ASSERT(!empty.Has("d")); 
+    UNIT_ASSERT(!empty.Has("d")); 
+ 
     UNIT_ASSERT(empty.Has("")); // contains only empty string
-}
-
+} 
+ 
 // Tests for trie with vector (list, set) values
 
 TVector<TUtf16String> TCompactTrieTest::GetSampleKeys(size_t nKeys) const {
diff --git a/library/cpp/containers/comptrie/set.h b/library/cpp/containers/comptrie/set.h
index acd43338f0..e165e8650f 100644
--- a/library/cpp/containers/comptrie/set.h
+++ b/library/cpp/containers/comptrie/set.h
@@ -1,40 +1,40 @@
 #pragma once
 
-#include "comptrie_trie.h"
-
-template <typename T = char>
+#include "comptrie_trie.h" 
+ 
+template <typename T = char> 
 class TCompactTrieSet: public TCompactTrie<T, ui8, TNullPacker<ui8>> {
-public:
+public: 
     typedef TCompactTrie<T, ui8, TNullPacker<ui8>> TBase;
-
+ 
     using typename TBase::TBuilder;
-    using typename TBase::TKey;
-    using typename TBase::TKeyBuf;
+    using typename TBase::TKey; 
+    using typename TBase::TKeyBuf; 
     using typename TBase::TSymbol;
-
+ 
     TCompactTrieSet() = default;
-
-    explicit TCompactTrieSet(const TBlob& data)
-        : TBase(data)
-    {
-    }
-
-    template <typename D>
+ 
+    explicit TCompactTrieSet(const TBlob& data) 
+        : TBase(data) 
+    { 
+    } 
+ 
+    template <typename D> 
     explicit TCompactTrieSet(const TCompactTrie<T, D, TNullPacker<D>>& trie)
         : TBase(trie.Data()) // should be binary compatible for any D
-    {
-    }
-
-    TCompactTrieSet(const char* data, size_t len)
-        : TBase(data, len)
-    {
-    }
-
-    bool Has(const typename TBase::TKeyBuf& key) const {
+    { 
+    } 
+ 
+    TCompactTrieSet(const char* data, size_t len) 
+        : TBase(data, len) 
+    { 
+    } 
+ 
+    bool Has(const typename TBase::TKeyBuf& key) const { 
         return TBase::Find(key.data(), key.size());
-    }
-
-    bool FindTails(const typename TBase::TKeyBuf& key, TCompactTrieSet<T>& res) const {
-        return TBase::FindTails(key, res);
-    }
-};
+    } 
+ 
+    bool FindTails(const typename TBase::TKeyBuf& key, TCompactTrieSet<T>& res) const { 
+        return TBase::FindTails(key, res); 
+    } 
+}; 
diff --git a/library/cpp/containers/comptrie/ya.make b/library/cpp/containers/comptrie/ya.make
index 81352da4b2..7a83c353bd 100644
--- a/library/cpp/containers/comptrie/ya.make
+++ b/library/cpp/containers/comptrie/ya.make
@@ -11,7 +11,7 @@ SRCS(
     first_symbol_iterator.h
     key_selector.h
     leaf_skipper.h
-    set.h
+    set.h 
     comptrie.cpp
     comptrie_builder.cpp
     comptrie_impl.cpp
diff --git a/library/cpp/containers/ring_buffer/ring_buffer.h b/library/cpp/containers/ring_buffer/ring_buffer.h
index 41220dcf6b..e1f232712c 100644
--- a/library/cpp/containers/ring_buffer/ring_buffer.h
+++ b/library/cpp/containers/ring_buffer/ring_buffer.h
@@ -1,81 +1,81 @@
-#pragma once
-
-#include <util/generic/vector.h>
-#include <util/system/yassert.h>
-
-template <typename T>
-class TSimpleRingBuffer {
-public:
-    TSimpleRingBuffer(size_t maxSize)
-        : MaxSize(maxSize)
-    {
-        Items.reserve(MaxSize);
-    }
-
+#pragma once 
+ 
+#include <util/generic/vector.h> 
+#include <util/system/yassert.h> 
+ 
+template <typename T> 
+class TSimpleRingBuffer { 
+public: 
+    TSimpleRingBuffer(size_t maxSize) 
+        : MaxSize(maxSize) 
+    { 
+        Items.reserve(MaxSize); 
+    } 
+ 
     TSimpleRingBuffer(const TSimpleRingBuffer&) = default;
     TSimpleRingBuffer(TSimpleRingBuffer&&) = default;
 
     TSimpleRingBuffer& operator=(const TSimpleRingBuffer&) = default;
     TSimpleRingBuffer& operator=(TSimpleRingBuffer&&) = default;
 
-    // First available item
-    size_t FirstIndex() const {
-        return Begin;
-    }
-
-    size_t AvailSize() const {
-        return Items.size();
-    }
-
-    // Total number of items inserted
-    size_t TotalSize() const {
-        return FirstIndex() + AvailSize();
-    }
-
-    bool IsAvail(size_t index) const {
-        return index >= FirstIndex() && index < TotalSize();
-    }
-
-    const T& operator[](size_t index) const {
+    // First available item 
+    size_t FirstIndex() const { 
+        return Begin; 
+    } 
+ 
+    size_t AvailSize() const { 
+        return Items.size(); 
+    } 
+ 
+    // Total number of items inserted 
+    size_t TotalSize() const { 
+        return FirstIndex() + AvailSize(); 
+    } 
+ 
+    bool IsAvail(size_t index) const { 
+        return index >= FirstIndex() && index < TotalSize(); 
+    } 
+ 
+    const T& operator[](size_t index) const { 
         Y_ASSERT(IsAvail(index));
-        return Items[RealIndex(index)];
-    }
-
-    T& operator[](size_t index) {
+        return Items[RealIndex(index)]; 
+    } 
+ 
+    T& operator[](size_t index) { 
         Y_ASSERT(IsAvail(index));
-        return Items[RealIndex(index)];
-    }
-
-    void PushBack(const T& t) {
-        if (Items.size() < MaxSize) {
-            Items.push_back(t);
-        } else {
-            Items[RealIndex(Begin)] = t;
-            Begin += 1;
-        }
-    }
-
+        return Items[RealIndex(index)]; 
+    } 
+ 
+    void PushBack(const T& t) { 
+        if (Items.size() < MaxSize) { 
+            Items.push_back(t); 
+        } else { 
+            Items[RealIndex(Begin)] = t; 
+            Begin += 1; 
+        } 
+    } 
+ 
     void Clear() {
         Items.clear();
         Begin = 0;
     }
 
-private:
-    size_t RealIndex(size_t index) const {
-        return index % MaxSize;
-    }
-
-private:
-    size_t MaxSize;
-    size_t Begin = 0;
+private: 
+    size_t RealIndex(size_t index) const { 
+        return index % MaxSize; 
+    } 
+ 
+private: 
+    size_t MaxSize; 
+    size_t Begin = 0; 
     TVector<T> Items;
-};
-
-template <typename T, size_t maxSize>
-class TStaticRingBuffer: public TSimpleRingBuffer<T> {
-public:
-    TStaticRingBuffer()
-        : TSimpleRingBuffer<T>(maxSize)
-    {
-    }
-};
+}; 
+ 
+template <typename T, size_t maxSize> 
+class TStaticRingBuffer: public TSimpleRingBuffer<T> { 
+public: 
+    TStaticRingBuffer() 
+        : TSimpleRingBuffer<T>(maxSize) 
+    { 
+    } 
+}; 
diff --git a/library/cpp/enumbitset/enumbitset.h b/library/cpp/enumbitset/enumbitset.h
index 41864c3a04..9e1ae2d938 100644
--- a/library/cpp/enumbitset/enumbitset.h
+++ b/library/cpp/enumbitset/enumbitset.h
@@ -8,9 +8,9 @@
 #include <util/string/printf.h>
 #include <util/system/yassert.h>
 
-// Stack memory bitmask for TEnum values [begin, end).
-// @end value is not included in the mask and is not necessarily defined as enum value.
-// For example: enum EType { A, B, C } ==> TEnumBitSet<EType, A, C + 1>
+// Stack memory bitmask for TEnum values [begin, end). 
+// @end value is not included in the mask and is not necessarily defined as enum value. 
+// For example: enum EType { A, B, C } ==> TEnumBitSet<EType, A, C + 1> 
 template <typename TEnum, int mbegin, int mend>
 class TEnumBitSet: private TBitMap<mend - mbegin> {
 public:
@@ -227,10 +227,10 @@ public:
     using TParent::Count;
     using TParent::Empty;
 
-    explicit operator bool() const {
-        return !Empty();
-    }
-
+    explicit operator bool() const { 
+        return !Empty(); 
+    } 
+ 
     void Swap(TThis& bitmap) {
         TParent::Swap(bitmap);
     }
diff --git a/library/cpp/enumbitset/enumbitset_ut.cpp b/library/cpp/enumbitset/enumbitset_ut.cpp
index e55b3251c3..d80d50b5d8 100644
--- a/library/cpp/enumbitset/enumbitset_ut.cpp
+++ b/library/cpp/enumbitset/enumbitset_ut.cpp
@@ -34,18 +34,18 @@ Y_UNIT_TEST_SUITE(TEnumBitSetTest) {
 
         ebs.SafeSet(TE_OVERFLOW);
         UNIT_ASSERT(!ebs.SafeTest(TE_OVERFLOW));
-    }
+    } 
 
     Y_UNIT_TEST(TestEmpty) {
-        TTestBitSet mask;
-        UNIT_ASSERT(mask.Empty());
-        if (mask)
-            UNIT_ASSERT(false && "should be empty");
-
-        mask.Set(TE_FIRST);
-        UNIT_ASSERT(!mask.Empty());
-        UNIT_ASSERT(mask.Count() == 1);
-        if (!mask)
+        TTestBitSet mask; 
+        UNIT_ASSERT(mask.Empty()); 
+        if (mask) 
+            UNIT_ASSERT(false && "should be empty"); 
+ 
+        mask.Set(TE_FIRST); 
+        UNIT_ASSERT(!mask.Empty()); 
+        UNIT_ASSERT(mask.Count() == 1); 
+        if (!mask) 
             UNIT_ASSERT(false && "should not be empty");
     }
 
diff --git a/library/cpp/json/writer/json.cpp b/library/cpp/json/writer/json.cpp
index 02370c2d79..b646d459c1 100644
--- a/library/cpp/json/writer/json.cpp
+++ b/library/cpp/json/writer/json.cpp
@@ -28,8 +28,8 @@ namespace NJsonWriter {
 
         Stack.reserve(64); // should be enough for most cases
         StackPush(JE_OUTER_SPACE);
-    }
-
+    } 
+ 
     static const char* EntityToStr(EJsonEntity e) {
         switch (e) {
             case JE_OUTER_SPACE:
@@ -44,7 +44,7 @@ namespace NJsonWriter {
                 return "JE_unknown";
         }
     }
-
+ 
     inline void TBuf::StackPush(EJsonEntity e) {
         Stack.push_back(e);
     }
@@ -74,7 +74,7 @@ namespace NJsonWriter {
         NeedComma = true;
         NeedNewline = true;
     }
-
+ 
     inline void TBuf::CheckAndPop(EJsonEntity e) {
         if (Y_UNLIKELY(StackTop() != e)) {
             ythrow TError() << "JSON writer: unexpected value "
@@ -91,8 +91,8 @@ namespace NJsonWriter {
             return;
 
         PrintWhitespaces(Max(0, indentation), true);
-    }
-
+    } 
+ 
     void TBuf::PrintWhitespaces(size_t count, bool prependWithNewLine) {
         static constexpr TStringBuf whitespacesTemplate = "\n                                ";
         static_assert(whitespacesTemplate[0] == '\n');
@@ -112,13 +112,13 @@ namespace NJsonWriter {
             RawWriteChar(',');
         }
         NeedComma = true;
-
+ 
         if (NeedNewline) {
             PrintIndentation(false);
         }
         NeedNewline = true;
     }
-
+ 
     inline void TBuf::BeginValue() {
         if (Y_UNLIKELY(KeyExpected())) {
             ythrow TError() << "JSON writer: value written, "
@@ -375,9 +375,9 @@ namespace NJsonWriter {
 
         return false;
     }
-
-#undef MATCH
-
+ 
+#undef MATCH 
+ 
     static bool LessStrPtr(const TString* a, const TString* b) {
         return *a < *b;
     }
diff --git a/library/cpp/json/writer/json.h b/library/cpp/json/writer/json.h
index 0aae2531b9..07c3b9d0d1 100644
--- a/library/cpp/json/writer/json.h
+++ b/library/cpp/json/writer/json.h
@@ -43,8 +43,8 @@ namespace NJsonWriter {
     public:
         TBuf(EHtmlEscapeMode mode = HEM_DONT_ESCAPE_HTML, IOutputStream* stream = nullptr);
 
-        TValueContext WriteString(const TStringBuf& s, EHtmlEscapeMode hem);
-        TValueContext WriteString(const TStringBuf& s);
+        TValueContext WriteString(const TStringBuf& s, EHtmlEscapeMode hem); 
+        TValueContext WriteString(const TStringBuf& s); 
         TValueContext WriteInt(int i);
         TValueContext WriteLongLong(long long i);
         TValueContext WriteULongLong(unsigned long long i);
@@ -58,15 +58,15 @@ namespace NJsonWriter {
         TBuf& EndList();
 
         TPairContext BeginObject();
-        TAfterColonContext WriteKey(const TStringBuf& key, EHtmlEscapeMode hem);
-        TAfterColonContext WriteKey(const TStringBuf& key);
+        TAfterColonContext WriteKey(const TStringBuf& key, EHtmlEscapeMode hem); 
+        TAfterColonContext WriteKey(const TStringBuf& key); 
         TAfterColonContext UnsafeWriteKey(const TStringBuf& key);
-        bool KeyExpected() const {
-            return Stack.back() == JE_OBJECT;
-        }
+        bool KeyExpected() const { 
+            return Stack.back() == JE_OBJECT; 
+        } 
 
         //! deprecated, do not use in new code
-        TAfterColonContext CompatWriteKeyWithoutQuotes(const TStringBuf& key);
+        TAfterColonContext CompatWriteKeyWithoutQuotes(const TStringBuf& key); 
 
         TBuf& EndObject();
 
@@ -102,7 +102,7 @@ namespace NJsonWriter {
            * j.UnsafeWriteValue("[1, 2, 3, \"o'clock\", 4, \"o'clock rock\"]");
            *
            * As in all of the Unsafe* functions, no escaping is done.     */
-        void UnsafeWriteValue(const TStringBuf& s);
+        void UnsafeWriteValue(const TStringBuf& s); 
         void UnsafeWriteValue(const char* s, size_t len);
 
         /*** When in the context of an object, write a literal string
@@ -114,10 +114,10 @@ namespace NJsonWriter {
            * j.EndObject();
            *
            * As in all of the Unsafe* functions, no escaping is done.     */
-        TPairContext UnsafeWritePair(const TStringBuf& s);
+        TPairContext UnsafeWritePair(const TStringBuf& s); 
 
         /*** Copy the supplied string directly into the output stream.    */
-        void UnsafeWriteRawBytes(const TStringBuf& s);
+        void UnsafeWriteRawBytes(const TStringBuf& s); 
         void UnsafeWriteRawBytes(const char* c, size_t len);
 
         TBufState State() const;
@@ -129,21 +129,21 @@ namespace NJsonWriter {
         void EndValue();
         void BeginKey();
         void RawWriteChar(char c);
-        bool EscapedWriteChar(const char* b, const char* c, EHtmlEscapeMode hem);
+        bool EscapedWriteChar(const char* b, const char* c, EHtmlEscapeMode hem); 
         void WriteBareString(const TStringBuf s, EHtmlEscapeMode hem);
         void WriteComma();
         void PrintIndentation(bool closing);
         void PrintWhitespaces(size_t count, bool prependWithNewLine);
         void WriteHexEscape(unsigned char c);
 
-        void StackPush(EJsonEntity e);
-        void StackPop();
-        void CheckAndPop(EJsonEntity e);
-        EJsonEntity StackTop() const;
-
+        void StackPush(EJsonEntity e); 
+        void StackPop(); 
+        void CheckAndPop(EJsonEntity e); 
+        EJsonEntity StackTop() const; 
+ 
         template <class TFloat>
         TValueContext WriteFloatImpl(TFloat f, EFloatToStringMode mode, int ndigits);
-
+ 
     private:
         IOutputStream* Stream;
         THolder<TStringStream> StringStream;
@@ -160,8 +160,8 @@ namespace NJsonWriter {
 
     // Please don't try to instantiate the classes declared below this point.
 
-    template <typename TOutContext>
-    class TValueWriter {
+    template <typename TOutContext> 
+    class TValueWriter { 
     public:
         TOutContext WriteNull();
         TOutContext WriteString(const TStringBuf&);
@@ -221,19 +221,19 @@ namespace NJsonWriter {
 
     class TPairContext {
     public:
-        TAfterColonContext WriteKey(const TStringBuf& s, EHtmlEscapeMode hem) {
+        TAfterColonContext WriteKey(const TStringBuf& s, EHtmlEscapeMode hem) { 
             return Buf.WriteKey(s, hem);
         }
-        TAfterColonContext WriteKey(const TStringBuf& s) {
+        TAfterColonContext WriteKey(const TStringBuf& s) { 
             return Buf.WriteKey(s);
         }
         TAfterColonContext UnsafeWriteKey(const TStringBuf& s) {
             return Buf.UnsafeWriteKey(s);
         }
-        TAfterColonContext CompatWriteKeyWithoutQuotes(const TStringBuf& s) {
+        TAfterColonContext CompatWriteKeyWithoutQuotes(const TStringBuf& s) { 
             return Buf.CompatWriteKeyWithoutQuotes(s);
         }
-        TPairContext UnsafeWritePair(const TStringBuf& s) {
+        TPairContext UnsafeWritePair(const TStringBuf& s) { 
             return Buf.UnsafeWritePair(s);
         }
         TBuf& EndObject() {
@@ -243,8 +243,8 @@ namespace NJsonWriter {
     private:
         TPairContext(TBuf& buf)
             : Buf(buf)
-        {
-        }
+        { 
+        } 
 
         friend class TBuf;
         friend class TValueWriter<TPairContext>;
diff --git a/library/cpp/json/writer/json_value.cpp b/library/cpp/json/writer/json_value.cpp
index c61e8d1dc4..e92099e44c 100644
--- a/library/cpp/json/writer/json_value.cpp
+++ b/library/cpp/json/writer/json_value.cpp
@@ -3,7 +3,7 @@
 
 #include <util/generic/ymath.h>
 #include <util/generic/ylimits.h>
-#include <util/generic/utility.h>
+#include <util/generic/utility.h> 
 #include <util/generic/singleton.h>
 #include <util/stream/str.h>
 #include <util/stream/output.h>
@@ -286,8 +286,8 @@ namespace NJson {
             TArray::iterator it = Value.Array->begin() + index;
             Value.Array->erase(it);
         }
-    }
-
+    } 
+ 
     void TJsonValue::Clear() noexcept {
         switch (Type) {
             case JSON_STRING:
@@ -714,8 +714,8 @@ namespace NJson {
             return false;
 
         *value = Value.Array;
-        return true;
-    }
+        return true; 
+    } 
 
     bool TJsonValue::GetValue(const size_t index, TJsonValue* value) const {
         const TJsonValue* tmp = nullptr;
@@ -724,7 +724,7 @@ namespace NJson {
             return true;
         }
         return false;
-    }
+    } 
 
     bool TJsonValue::GetValue(const TStringBuf key, TJsonValue* value) const {
         const TJsonValue* tmp = nullptr;
@@ -733,15 +733,15 @@ namespace NJson {
             return true;
         }
         return false;
-    }
+    } 
 
     bool TJsonValue::GetValuePointer(const size_t index, const TJsonValue** value) const noexcept {
         if (Type == JSON_ARRAY && index < Value.Array->size()) {
             *value = &(*Value.Array)[index];
-            return true;
-        }
+            return true; 
+        } 
         return false;
-    }
+    } 
 
     bool TJsonValue::GetValuePointer(const TStringBuf key, const TJsonValue** value) const noexcept {
         if (Type == JSON_MAP) {
@@ -882,8 +882,8 @@ namespace NJson {
 
     const TJsonValue* TJsonValue::GetValueByPath(const TStringBuf key, char delim) const noexcept {
         return GetValuePtrByPath<false>(this, key, delim);
-    }
-
+    } 
+ 
     TJsonValue* TJsonValue::GetValueByPath(const TStringBuf key, char delim) noexcept {
         return GetValuePtrByPath<false>(this, key, delim);
     }
@@ -945,11 +945,11 @@ namespace NJson {
             case JSON_INTEGER: {
                 return (rhs.IsInteger() && GetInteger() == rhs.GetInteger());
             }
-
+ 
             case JSON_UINTEGER: {
                 return (rhs.IsUInteger() && GetUInteger() == rhs.GetUInteger());
             }
-
+ 
             case JSON_STRING: {
                 return (rhs.IsString() && Value.String == rhs.Value.String);
             }
@@ -978,7 +978,7 @@ namespace NJson {
         } else {
             std::memcpy(&output.Value, &Value, sizeof(Value));
         }
-
+ 
         output.Type = Type;
         Type = JSON_UNDEFINED;
     }
diff --git a/library/cpp/json/writer/json_value.h b/library/cpp/json/writer/json_value.h
index 3f0f50bc4c..e625c79eb6 100644
--- a/library/cpp/json/writer/json_value.h
+++ b/library/cpp/json/writer/json_value.h
@@ -99,12 +99,12 @@ namespace NJson {
 
         void EraseValue(TStringBuf key);
         void EraseValue(size_t index);
-
+ 
         TJsonValue& operator[](size_t idx);
         TJsonValue& operator[](const TStringBuf& key);
         const TJsonValue& operator[](size_t idx) const noexcept;
         const TJsonValue& operator[](const TStringBuf& key) const noexcept;
-
+ 
         bool GetBoolean() const;
         long long GetInteger() const;
         unsigned long long GetUInteger() const;
@@ -164,7 +164,7 @@ namespace NJson {
         bool IsString() const noexcept;
         bool IsMap() const noexcept;
         bool IsArray() const noexcept;
-
+ 
         /// @return true if JSON_INTEGER or (JSON_UINTEGER and Value <= Max<long long>)
         bool IsInteger() const noexcept;
 
@@ -192,7 +192,7 @@ namespace NJson {
         void Load(IInputStream* s);
 
         static const TJsonValue UNDEFINED;
-
+ 
     private:
         EJsonValueType Type = JSON_UNDEFINED;
         union TValueUnion {
@@ -218,7 +218,7 @@ namespace NJson {
             @throw yexception if Back shouldn't be called on the object.
          */
         void BackChecks() const;
-    };
+    }; 
 
     inline bool GetBoolean(const TJsonValue& jv, size_t index, bool* value) noexcept {
         return jv[index].GetBoolean(value);
diff --git a/library/cpp/json/writer/json_value_ut.cpp b/library/cpp/json/writer/json_value_ut.cpp
index dc7f6affdf..31540983c0 100644
--- a/library/cpp/json/writer/json_value_ut.cpp
+++ b/library/cpp/json/writer/json_value_ut.cpp
@@ -8,34 +8,34 @@ using namespace NJson;
 
 Y_UNIT_TEST_SUITE(TJsonValueTest) {
     Y_UNIT_TEST(UndefTest) {
-        TJsonValue undef;
-        TJsonValue null(JSON_NULL);
-        TJsonValue _false(false);
-        TJsonValue zeroInt(0);
-        TJsonValue zeroDouble(0.0);
-        TJsonValue emptyStr("");
-        TJsonValue emptyArray(JSON_ARRAY);
-        TJsonValue emptyMap(JSON_MAP);
-
-        UNIT_ASSERT(!undef.IsDefined());
+        TJsonValue undef; 
+        TJsonValue null(JSON_NULL); 
+        TJsonValue _false(false); 
+        TJsonValue zeroInt(0); 
+        TJsonValue zeroDouble(0.0); 
+        TJsonValue emptyStr(""); 
+        TJsonValue emptyArray(JSON_ARRAY); 
+        TJsonValue emptyMap(JSON_MAP); 
+ 
+        UNIT_ASSERT(!undef.IsDefined()); 
         UNIT_ASSERT(!null.IsDefined()); // json NULL is undefined too!
-        UNIT_ASSERT(_false.IsDefined());
-        UNIT_ASSERT(zeroInt.IsDefined());
-        UNIT_ASSERT(zeroDouble.IsDefined());
-        UNIT_ASSERT(emptyStr.IsDefined());
-        UNIT_ASSERT(emptyArray.IsDefined());
-        UNIT_ASSERT(emptyMap.IsDefined());
-
-        UNIT_ASSERT(undef == TJsonValue());
-        UNIT_ASSERT(undef != null);
-        UNIT_ASSERT(undef != _false);
-        UNIT_ASSERT(undef != zeroInt);
-        UNIT_ASSERT(undef != zeroDouble);
-        UNIT_ASSERT(undef != emptyStr);
-        UNIT_ASSERT(undef != emptyArray);
-        UNIT_ASSERT(undef != emptyMap);
-    }
-
+        UNIT_ASSERT(_false.IsDefined()); 
+        UNIT_ASSERT(zeroInt.IsDefined()); 
+        UNIT_ASSERT(zeroDouble.IsDefined()); 
+        UNIT_ASSERT(emptyStr.IsDefined()); 
+        UNIT_ASSERT(emptyArray.IsDefined()); 
+        UNIT_ASSERT(emptyMap.IsDefined()); 
+ 
+        UNIT_ASSERT(undef == TJsonValue()); 
+        UNIT_ASSERT(undef != null); 
+        UNIT_ASSERT(undef != _false); 
+        UNIT_ASSERT(undef != zeroInt); 
+        UNIT_ASSERT(undef != zeroDouble); 
+        UNIT_ASSERT(undef != emptyStr); 
+        UNIT_ASSERT(undef != emptyArray); 
+        UNIT_ASSERT(undef != emptyMap); 
+    } 
+ 
     Y_UNIT_TEST(DefaultCompareTest) {
         {
             TJsonValue lhs;
@@ -208,31 +208,31 @@ Y_UNIT_TEST_SUITE(TJsonValueTest) {
             UNIT_ASSERT(rhs != lhs);
         }
     }
-
+ 
     Y_UNIT_TEST(SwapTest) {
-        {
-            TJsonValue lhs;
-            lhs.InsertValue("a", "b");
-            TJsonValue lhsCopy = lhs;
-
-            TJsonValue rhs(JSON_NULL);
-            TJsonValue rhsCopy = rhs;
-
-            UNIT_ASSERT(lhs == lhsCopy);
-            UNIT_ASSERT(rhs == rhsCopy);
-
-            lhs.Swap(rhs);
-
-            UNIT_ASSERT(rhs == lhsCopy);
-            UNIT_ASSERT(lhs == rhsCopy);
-
-            lhs.Swap(rhs);
-
-            UNIT_ASSERT(lhs == lhsCopy);
-            UNIT_ASSERT(rhs == rhsCopy);
-        }
-    }
-
+        { 
+            TJsonValue lhs; 
+            lhs.InsertValue("a", "b"); 
+            TJsonValue lhsCopy = lhs; 
+ 
+            TJsonValue rhs(JSON_NULL); 
+            TJsonValue rhsCopy = rhs; 
+ 
+            UNIT_ASSERT(lhs == lhsCopy); 
+            UNIT_ASSERT(rhs == rhsCopy); 
+ 
+            lhs.Swap(rhs); 
+ 
+            UNIT_ASSERT(rhs == lhsCopy); 
+            UNIT_ASSERT(lhs == rhsCopy); 
+ 
+            lhs.Swap(rhs); 
+ 
+            UNIT_ASSERT(lhs == lhsCopy); 
+            UNIT_ASSERT(rhs == rhsCopy); 
+        } 
+    } 
+ 
     Y_UNIT_TEST(GetValueByPathTest) {
         {
             TJsonValue lhs;
@@ -250,15 +250,15 @@ Y_UNIT_TEST_SUITE(TJsonValueTest) {
             UNIT_ASSERT(!lhs.GetValueByPath("l/a/c/se", result, '/'));
             UNIT_ASSERT(lhs.GetValueByPath("l/a/c", result, '/'));
             UNIT_ASSERT(result.GetStringRobust() == "{\"e\":\"f\"}");
-
-            // faster TStringBuf version
-            UNIT_ASSERT_EQUAL(*lhs.GetValueByPath("l", '/'), last);
-            UNIT_ASSERT_EQUAL(*lhs.GetValueByPath("l/a", '/'), second);
-            UNIT_ASSERT_EQUAL(*lhs.GetValueByPath("l/a/c", '/'), first);
-            UNIT_ASSERT_EQUAL(*lhs.GetValueByPath("l.a.c.e", '.'), "f");
-            UNIT_ASSERT_EQUAL(lhs.GetValueByPath("l/a/c/e/x", '/'), NULL);
-            UNIT_ASSERT_EQUAL(lhs.GetValueByPath("a/c/e/x", '/'), NULL);
-            UNIT_ASSERT_EQUAL(lhs.GetValueByPath("nokey", '/'), NULL);
+ 
+            // faster TStringBuf version 
+            UNIT_ASSERT_EQUAL(*lhs.GetValueByPath("l", '/'), last); 
+            UNIT_ASSERT_EQUAL(*lhs.GetValueByPath("l/a", '/'), second); 
+            UNIT_ASSERT_EQUAL(*lhs.GetValueByPath("l/a/c", '/'), first); 
+            UNIT_ASSERT_EQUAL(*lhs.GetValueByPath("l.a.c.e", '.'), "f"); 
+            UNIT_ASSERT_EQUAL(lhs.GetValueByPath("l/a/c/e/x", '/'), NULL); 
+            UNIT_ASSERT_EQUAL(lhs.GetValueByPath("a/c/e/x", '/'), NULL); 
+            UNIT_ASSERT_EQUAL(lhs.GetValueByPath("nokey", '/'), NULL); 
             UNIT_ASSERT_EQUAL(*lhs.GetValueByPath("", '/'), lhs); // itself
 
             TJsonValue array;
diff --git a/library/cpp/packers/packers.h b/library/cpp/packers/packers.h
index 1bde1b59aa..43a0fa8b5d 100644
--- a/library/cpp/packers/packers.h
+++ b/library/cpp/packers/packers.h
@@ -132,21 +132,21 @@ namespace NPackers {
     }
 
     extern const ui8 SkipTable[];
-
+ 
     template <>
     inline void TIntegralPacker<ui64>::UnpackLeaf(const char* p, ui64& result) const {
         unsigned char ch = *(p++);
         size_t taillen = SkipTable[ch] - 1;
-
+ 
         result = (ch & (0x7F >> taillen));
-
+ 
         while (taillen--)
             result = ((result << 8) | (*(p++) & 0xFF));
     }
 
     template <>
     inline size_t TIntegralPacker<ui64>::SkipLeaf(const char* p) const {
-        return SkipTable[(ui8)*p];
+        return SkipTable[(ui8)*p]; 
     }
 
     namespace NImpl {
@@ -182,17 +182,17 @@ namespace NPackers {
     }
 
     template <class T>
-    inline void TIntegralPacker<T>::PackLeaf(char* buffer, const T& data, size_t size) const {
+    inline void TIntegralPacker<T>::PackLeaf(char* buffer, const T& data, size_t size) const { 
         TIntegralPacker<ui64>().PackLeaf(buffer, ConvertIntegral<T>(data), size);
     }
 
     template <class T>
-    inline size_t TIntegralPacker<T>::MeasureLeaf(const T& data) const {
+    inline size_t TIntegralPacker<T>::MeasureLeaf(const T& data) const { 
         return TIntegralPacker<ui64>().MeasureLeaf(ConvertIntegral<T>(data));
     }
 
     template <class T>
-    inline size_t TIntegralPacker<T>::SkipLeaf(const char* p) const {
+    inline size_t TIntegralPacker<T>::SkipLeaf(const char* p) const { 
         return TIntegralPacker<ui64>().SkipLeaf(p);
     }
 
diff --git a/library/cpp/protobuf/json/inline.h b/library/cpp/protobuf/json/inline.h
index e2d7bb6ef0..31dbf6a16c 100644
--- a/library/cpp/protobuf/json/inline.h
+++ b/library/cpp/protobuf/json/inline.h
@@ -1,66 +1,66 @@
-#pragma once
-
-// A printer from protobuf to json string, with ability to inline some string fields of given protobuf message
-// into output as ready json without additional escaping. These fields should be marked using special field option.
-// An example of usage:
-// 1) Define a field option in your .proto to identify fields which should be inlined, e.g.
-//
+#pragma once 
+ 
+// A printer from protobuf to json string, with ability to inline some string fields of given protobuf message 
+// into output as ready json without additional escaping. These fields should be marked using special field option. 
+// An example of usage: 
+// 1) Define a field option in your .proto to identify fields which should be inlined, e.g. 
+// 
 //     import "google/protobuf/descriptor.proto";
-//     extend google.protobuf.FieldOptions {
-//         optional bool this_is_json = 58253;   // do not forget assign some more or less unique tag
-//     }
-//
-// 2) Mark some fields of your protobuf message with this option, e.g.:
-//
-//     message TMyObject {
-//         optional string A = 1 [(this_is_json) = true];
-//     }
-//
-// 3) In the C++ code you prepare somehow an object of TMyObject type
-//
-//     TMyObject o;
-//     o.Set("{\"inner\":\"value\"}");
-//
-// 4) And then serialize it to json string with inlining, e.g.:
-//
+//     extend google.protobuf.FieldOptions { 
+//         optional bool this_is_json = 58253;   // do not forget assign some more or less unique tag 
+//     } 
+// 
+// 2) Mark some fields of your protobuf message with this option, e.g.: 
+// 
+//     message TMyObject { 
+//         optional string A = 1 [(this_is_json) = true]; 
+//     } 
+// 
+// 3) In the C++ code you prepare somehow an object of TMyObject type 
+// 
+//     TMyObject o; 
+//     o.Set("{\"inner\":\"value\"}"); 
+// 
+// 4) And then serialize it to json string with inlining, e.g.: 
+// 
 //     Cout << NProtobufJson::PrintInlined(o, MakeFieldOptionFunctor(this_is_json)) << Endl;
-//
+// 
 // 5) Alternatively you can specify a some more abstract functor for defining raw json fields
 //
-// which will print following json to stdout:
-//     {"A":{"inner":"value"}}
-// instead of
-//     {"A":"{\"inner\":\"value\"}"}
-// which would be printed with normal Proto2Json printer.
-//
-// See ut/inline_ut.cpp for additional examples of usage.
-
+// which will print following json to stdout: 
+//     {"A":{"inner":"value"}} 
+// instead of 
+//     {"A":"{\"inner\":\"value\"}"} 
+// which would be printed with normal Proto2Json printer. 
+// 
+// See ut/inline_ut.cpp for additional examples of usage. 
+ 
 #include "config.h"
 #include "proto2json_printer.h"
 #include "json_output_create.h"
-
+ 
 #include <library/cpp/protobuf/util/simple_reflection.h>
-
+ 
 #include <util/generic/maybe.h>
 #include <util/generic/yexception.h>
 #include <util/generic/utility.h>
-
+ 
 #include <functional>
-
-namespace NProtobufJson {
+ 
+namespace NProtobufJson { 
     template <typename TBasePrinter = TProto2JsonPrinter> // TBasePrinter is assumed to be a TProto2JsonPrinter descendant
     class TInliningPrinter: public TBasePrinter {
     public:
         using TFieldPredicate = std::function<bool(const NProtoBuf::Message&,
                                                    const NProtoBuf::FieldDescriptor*)>;
-
+ 
         template <typename... TArgs>
         TInliningPrinter(TFieldPredicate isInlined, TArgs&&... args)
             : TBasePrinter(std::forward<TArgs>(args)...)
             , IsInlined(std::move(isInlined))
         {
         }
-
+ 
         virtual void PrintField(const NProtoBuf::Message& proto,
                                 const NProtoBuf::FieldDescriptor& field,
                                 IJsonOutput& json,
@@ -77,12 +77,12 @@ namespace NProtobufJson {
                         json.WriteRawJson(f.Get<TString>(i));
                     json.EndList();
                 }
-
-            } else {
+ 
+            } else { 
                 TBasePrinter::PrintField(proto, field, json, key);
-            }
+            } 
         }
-
+ 
     private:
         bool ShouldPrint(const NProtoBuf::TConstField& f) const {
             if (!f.IsString())
@@ -95,8 +95,8 @@ namespace NProtobufJson {
             // we may want write default value for given field in case of its absence
             const auto& cfg = this->GetConfig();
             return (f.Field()->is_repeated() ? cfg.MissingRepeatedKeyMode : cfg.MissingSingleKeyMode) == TProto2JsonConfig::MissingKeyDefault;
-        }
-
+        } 
+ 
     private:
         TFieldPredicate IsInlined;
     };
@@ -105,11 +105,11 @@ namespace NProtobufJson {
         TInliningPrinter<> printer(std::move(isInlined), config);
         printer.Print(msg, output);
     }
-
+ 
     inline TString PrintInlined(const NProtoBuf::Message& msg, TInliningPrinter<>::TFieldPredicate isInlined, const TProto2JsonConfig& config = TProto2JsonConfig()) {
         TString ret;
         PrintInlined(msg, std::move(isInlined), *CreateJsonMapOutput(ret, config), config);
         return ret;
-    }
-
-}
+    } 
+ 
+} 
diff --git a/library/cpp/protobuf/json/proto2json.cpp b/library/cpp/protobuf/json/proto2json.cpp
index 3d76a91686..f0f8a0c4d7 100644
--- a/library/cpp/protobuf/json/proto2json.cpp
+++ b/library/cpp/protobuf/json/proto2json.cpp
@@ -24,7 +24,7 @@ namespace NProtobufJson {
                     const TProto2JsonConfig& config) {
         Proto2Json(proto, *CreateJsonMapOutput(json), config);
     }
-
+ 
     void Proto2Json(const NProtoBuf::Message& proto, NJson::TJsonWriter& writer,
                     const TProto2JsonConfig& config) {
         Proto2Json(proto, *CreateJsonMapOutput(writer), config);
diff --git a/library/cpp/protobuf/json/ut/inline_ut.cpp b/library/cpp/protobuf/json/ut/inline_ut.cpp
index c29ad32e7d..a40ec4bfec 100644
--- a/library/cpp/protobuf/json/ut/inline_ut.cpp
+++ b/library/cpp/protobuf/json/ut/inline_ut.cpp
@@ -4,11 +4,11 @@
 #include <library/cpp/protobuf/json/field_option.h>
 #include <library/cpp/protobuf/json/proto2json.h>
 #include <library/cpp/testing/unittest/registar.h>
-
+ 
 #include <util/generic/string.h>
-
-using namespace NProtobufJson;
-
+ 
+using namespace NProtobufJson; 
+ 
 static NProtobufJsonUt::TInlineTest GetTestMsg() {
     NProtobufJsonUt::TInlineTest msg;
     msg.SetOptJson(R"({"a":1,"b":"000"})");
@@ -59,7 +59,7 @@ Y_UNIT_TEST(TestNoValues) {
     NProtobufJsonUt::TInlineTest msg;
     msg.MutableInner()->AddNumber(100);
     msg.MutableInner()->AddNumber(200);
-
+ 
     TString expInlined = R"({"Inner":{"Number":[100,200]}})";
 
     TString myInlined = PrintInlined(msg, MakeFieldOptionFunctor(NProtobufJsonUt::inline_test));
diff --git a/library/cpp/protobuf/json/ut/inline_ut.proto b/library/cpp/protobuf/json/ut/inline_ut.proto
index 76bd10232d..d77fdd2537 100644
--- a/library/cpp/protobuf/json/ut/inline_ut.proto
+++ b/library/cpp/protobuf/json/ut/inline_ut.proto
@@ -1,22 +1,22 @@
 import "google/protobuf/descriptor.proto";
-
-package NProtobufJsonUt;
-
-extend google.protobuf.FieldOptions {
-  optional bool inline_test = 58253;
-}
-
-message TInlineTest {
-    optional string OptJson = 1 [(inline_test) = true];
-    optional string NotJson = 2;
-    repeated string RepJson = 3 [(inline_test) = true];
-
-    message TInner {
-        repeated uint32 Number = 1;
-        optional string InnerJson = 2 [(inline_test) = true];
-    }
-    optional TInner Inner = 4;
-}
+ 
+package NProtobufJsonUt; 
+ 
+extend google.protobuf.FieldOptions { 
+  optional bool inline_test = 58253; 
+} 
+ 
+message TInlineTest { 
+    optional string OptJson = 1 [(inline_test) = true]; 
+    optional string NotJson = 2; 
+    repeated string RepJson = 3 [(inline_test) = true]; 
+ 
+    message TInner { 
+        repeated uint32 Number = 1; 
+        optional string InnerJson = 2 [(inline_test) = true]; 
+    } 
+    optional TInner Inner = 4; 
+} 
 
 message TInlineTestDefaultValues {
     optional string OptJson = 1 [(inline_test) = true, default = "{\"default\":1}"];
diff --git a/library/cpp/protobuf/json/ut/ya.make b/library/cpp/protobuf/json/ut/ya.make
index b60a6d3c17..71c2318980 100644
--- a/library/cpp/protobuf/json/ut/ya.make
+++ b/library/cpp/protobuf/json/ut/ya.make
@@ -6,8 +6,8 @@ SRCS(
     filter_ut.cpp
     json2proto_ut.cpp
     proto2json_ut.cpp
-    inline_ut.proto
-    inline_ut.cpp
+    inline_ut.proto 
+    inline_ut.cpp 
     string_transform_ut.cpp
     filter_ut.proto
     test.proto
diff --git a/library/cpp/protobuf/util/cast.h b/library/cpp/protobuf/util/cast.h
index 83749dfcee..40076feac8 100644
--- a/library/cpp/protobuf/util/cast.h
+++ b/library/cpp/protobuf/util/cast.h
@@ -1,17 +1,17 @@
-#pragma once
+#pragma once 
 
 #include "traits.h"
-
+ 
 #include <google/protobuf/descriptor.h>
 #include <google/protobuf/message.h>
-
+ 
 #include <util/generic/cast.h>
-
-namespace NProtoBuf {
+ 
+namespace NProtoBuf { 
     // C++ compatible conversions of FieldDescriptor::CppType's
-
+ 
     using ECppType = FieldDescriptor::CppType;
-
+ 
     namespace NCast {
         template <ECppType src, ECppType dst>
         struct TIsCompatibleCppType {
@@ -19,67 +19,67 @@ namespace NProtoBuf {
                 Result = src == dst ||
                          (TIsNumericCppType<src>::Result && TIsNumericCppType<dst>::Result)
             };
-        };
-
+        }; 
+ 
         template <ECppType src, ECppType dst>
         struct TIsEnumToNumericCppType {
             enum {
                 Result = (src == FieldDescriptor::CPPTYPE_ENUM && TIsNumericCppType<dst>::Result)
             };
-        };
-
+        }; 
+ 
         template <ECppType src, ECppType dst, bool compatible> // compatible == true
         struct TCompatCastBase {
             static const bool IsCompatible = true;
-
+ 
             typedef typename TCppTypeTraits<src>::T TSrc;
             typedef typename TCppTypeTraits<dst>::T TDst;
-
+ 
             static inline TDst Cast(TSrc value) {
                 return value;
             }
         };
-
+ 
         template <ECppType src, ECppType dst> // compatible == false
         struct TCompatCastBase<src, dst, false> {
             static const bool IsCompatible = false;
-
+ 
             typedef typename TCppTypeTraits<src>::T TSrc;
             typedef typename TCppTypeTraits<dst>::T TDst;
-
+ 
             static inline TDst Cast(TSrc) {
                 ythrow TBadCastException() << "Incompatible FieldDescriptor::CppType conversion: #"
                                            << (size_t)src << " to #" << (size_t)dst;
             }
         };
-
+ 
         template <ECppType src, ECppType dst, bool isEnumToNum> // enum -> numeric
         struct TCompatCastImpl {
             static const bool IsCompatible = true;
-
+ 
             typedef typename TCppTypeTraits<dst>::T TDst;
-
+ 
             static inline TDst Cast(const EnumValueDescriptor* value) {
                 Y_ASSERT(value != nullptr);
                 return value->number();
             }
         };
-
+ 
         template <ECppType src, ECppType dst>
         struct TCompatCastImpl<src, dst, false>: public TCompatCastBase<src, dst, TIsCompatibleCppType<src, dst>::Result> {
             using TCompatCastBase<src, dst, TIsCompatibleCppType<src, dst>::Result>::IsCompatible;
         };
-
+ 
         template <ECppType src, ECppType dst>
         struct TCompatCast: public TCompatCastImpl<src, dst, TIsEnumToNumericCppType<src, dst>::Result> {
             typedef TCompatCastImpl<src, dst, TIsEnumToNumericCppType<src, dst>::Result> TBase;
-
+ 
             typedef typename TCppTypeTraits<src>::T TSrc;
             typedef typename TCppTypeTraits<dst>::T TDst;
-
+ 
             using TBase::Cast;
             using TBase::IsCompatible;
-
+ 
             inline bool Try(TSrc value, TDst& res) {
                 if (IsCompatible) {
                     res = Cast(value);
@@ -88,69 +88,69 @@ namespace NProtoBuf {
                 return false;
             }
         };
-
+ 
     }
 
-    template <ECppType src, ECppType dst>
+    template <ECppType src, ECppType dst> 
     inline typename TCppTypeTraits<dst>::T CompatCast(typename TCppTypeTraits<src>::T value) {
         return NCast::TCompatCast<src, dst>::Cast(value);
     }
-
-    template <ECppType src, ECppType dst>
+ 
+    template <ECppType src, ECppType dst> 
     inline bool TryCompatCast(typename TCppTypeTraits<src>::T value, typename TCppTypeTraits<dst>::T& res) {
         return NCast::TCompatCast<src, dst>::Try(value, res);
     }
-
+ 
     // Message static/dynamic checked casts
-
+ 
     template <typename TpMessage>
     inline const TpMessage* TryCast(const Message* msg) {
         if (!msg || TpMessage::descriptor() != msg->GetDescriptor())
             return NULL;
         return CheckedCast<const TpMessage*>(msg);
     }
-
+ 
     template <typename TpMessage>
     inline const TpMessage* TryCast(const Message* msg, const TpMessage*& ret) {
         ret = TryCast<TpMessage>(msg);
         return ret;
     }
-
+ 
     template <typename TpMessage>
     inline TpMessage* TryCast(Message* msg) {
         if (!msg || TpMessage::descriptor() != msg->GetDescriptor())
             return nullptr;
         return CheckedCast<TpMessage*>(msg);
     }
-
+ 
     template <typename TpMessage>
     inline TpMessage* TryCast(Message* msg, TpMessage*& ret) {
         ret = TryCast<TpMessage>(msg);
         return ret;
     }
-
+ 
     // specialize for Message itself
-
+ 
     template <>
     inline const Message* TryCast<Message>(const Message* msg) {
         return msg;
     }
-
+ 
     template <>
     inline Message* TryCast<Message>(Message* msg) {
         return msg;
     }
-
+ 
     // Binary serialization compatible conversion
     inline bool TryBinaryCast(const Message* from, Message* to, TString* buffer = nullptr) {
         TString tmpbuf;
         if (!buffer)
             buffer = &tmpbuf;
-
+ 
         if (!from->SerializeToString(buffer))
             return false;
-
+ 
         return to->ParseFromString(*buffer);
     }
-
-}
+ 
+} 
diff --git a/library/cpp/protobuf/util/is_equal.cpp b/library/cpp/protobuf/util/is_equal.cpp
index 227408006e..f191e8bfad 100644
--- a/library/cpp/protobuf/util/is_equal.cpp
+++ b/library/cpp/protobuf/util/is_equal.cpp
@@ -1,16 +1,16 @@
-#include "is_equal.h"
-#include "traits.h"
-
+#include "is_equal.h" 
+#include "traits.h" 
+ 
 #include <google/protobuf/descriptor.h>
-
-#include <util/generic/yexception.h>
+ 
+#include <util/generic/yexception.h> 
 #include <util/string/cast.h>
 #include <util/string/vector.h>
-
-namespace NProtoBuf {
+ 
+namespace NProtoBuf { 
     template <bool useDefault>
     static bool IsEqualImpl(const Message& m1, const Message& m2, TVector<TString>* differentPath);
-
+ 
     namespace {
         template <FieldDescriptor::CppType CppType, bool useDefault>
         struct TCompareValue {
@@ -26,12 +26,12 @@ namespace NProtoBuf {
                 return NProtoBuf::IsEqualImpl<useDefault>(*value1, *value2, differentPath);
             }
         };
-
+ 
         template <FieldDescriptor::CppType CppType, bool useDefault>
         class TCompareField {
             typedef TCppTypeTraits<CppType> TTraits;
             typedef TCompareValue<CppType, useDefault> TCompare;
-
+ 
         public:
             static inline bool IsEqual(const Message& m1, const Message& m2, const FieldDescriptor& field, TVector<TString>* differentPath) {
                 if (field.is_repeated())
@@ -39,12 +39,12 @@ namespace NProtoBuf {
                 else
                     return IsEqualSingle(m1, m2, &field, differentPath);
             }
-
+ 
         private:
             static bool IsEqualSingle(const Message& m1, const Message& m2, const FieldDescriptor* field, TVector<TString>* differentPath) {
                 bool has1 = m1.GetReflection()->HasField(m1, field);
                 bool has2 = m2.GetReflection()->HasField(m2, field);
-
+ 
                 if (has1 != has2) {
                     if (!useDefault || field->is_required()) {
                         return false;
@@ -60,7 +60,7 @@ namespace NProtoBuf {
             static bool IsEqualRepeated(const Message& m1, const Message& m2, const FieldDescriptor* field, TVector<TString>* differentPath) {
                 int fieldSize = m1.GetReflection()->FieldSize(m1, field);
                 if (fieldSize != m2.GetReflection()->FieldSize(m2, field))
-                    return false;
+                    return false; 
                 for (int i = 0; i < fieldSize; ++i)
                     if (!IsEqualRepeatedValue(m1, m2, field, i, differentPath)) {
                         if (!!differentPath) {
@@ -68,16 +68,16 @@ namespace NProtoBuf {
                         }
                         return false;
                     }
-                return true;
+                return true; 
             }
-
+ 
             static inline bool IsEqualRepeatedValue(const Message& m1, const Message& m2, const FieldDescriptor* field, int index, TVector<TString>* differentPath) {
                 return TCompare::IsEqual(TTraits::GetRepeated(m1, field, index),
                                          TTraits::GetRepeated(m2, field, index),
                                          differentPath);
             }
         };
-
+ 
         template <bool useDefault>
         bool IsEqualField(const Message& m1, const Message& m2, const FieldDescriptor& field, TVector<TString>* differentPath) {
 #define CASE_CPPTYPE(cpptype)                                                                                          \
@@ -88,7 +88,7 @@ namespace NProtoBuf {
         }                                                                                                              \
         return r;                                                                                                      \
     }
-
+ 
             switch (field.cpp_type()) {
                 CASE_CPPTYPE(INT32)
                 CASE_CPPTYPE(INT64)
@@ -105,10 +105,10 @@ namespace NProtoBuf {
             }
 
 #undef CASE_CPPTYPE
-        }
+        } 
     }
-
-    template <bool useDefault>
+ 
+    template <bool useDefault> 
     bool IsEqualImpl(const Message& m1, const Message& m2, TVector<TString>* differentPath) {
         const Descriptor* descr = m1.GetDescriptor();
         if (descr != m2.GetDescriptor()) {
@@ -120,7 +120,7 @@ namespace NProtoBuf {
             }
         return true;
     }
-
+ 
     bool IsEqual(const Message& m1, const Message& m2) {
         return IsEqualImpl<false>(m1, m2, nullptr);
     }
@@ -131,14 +131,14 @@ namespace NProtoBuf {
         bool r = IsEqualImpl<false>(m1, m2, differentPathVectorPtr);
         if (!r && differentPath) {
             *differentPath = JoinStrings(differentPathVector.rbegin(), differentPathVector.rend(), "/");
-        }
+        } 
         return r;
     }
-
+ 
     bool IsEqualDefault(const Message& m1, const Message& m2) {
         return IsEqualImpl<true>(m1, m2, nullptr);
-    }
-
+    } 
+ 
     template <bool useDefault>
     static bool IsEqualFieldImpl(
         const Message& m1,
@@ -147,11 +147,11 @@ namespace NProtoBuf {
         TVector<TString>* differentPath) {
         const Descriptor* descr = m1.GetDescriptor();
         if (descr != m2.GetDescriptor()) {
-            return false;
+            return false; 
         }
         return IsEqualField<useDefault>(m1, m2, field, differentPath);
     }
-
+ 
     bool IsEqualField(const Message& m1, const Message& m2, const FieldDescriptor& field) {
         return IsEqualFieldImpl<false>(m1, m2, field, nullptr);
     }
diff --git a/library/cpp/protobuf/util/is_equal.h b/library/cpp/protobuf/util/is_equal.h
index 13c0aae63d..35515639d0 100644
--- a/library/cpp/protobuf/util/is_equal.h
+++ b/library/cpp/protobuf/util/is_equal.h
@@ -1,7 +1,7 @@
-#pragma once
-
+#pragma once 
+ 
 #include <util/generic/fwd.h>
-
+ 
 namespace google {
     namespace protobuf {
         class Message;
@@ -9,11 +9,11 @@ namespace google {
     }
 }
 
-namespace NProtoBuf {
+namespace NProtoBuf { 
     using ::google::protobuf::FieldDescriptor;
     using ::google::protobuf::Message;
 }
-
+ 
 namespace NProtoBuf {
     // Reflection-based equality check for arbitrary protobuf messages
 
@@ -21,7 +21,7 @@ namespace NProtoBuf {
     // a field with explicitly set default value.
     bool IsEqual(const Message& m1, const Message& m2);
     bool IsEqual(const Message& m1, const Message& m2, TString* differentPath);
-
+ 
     bool IsEqualField(const Message& m1, const Message& m2, const FieldDescriptor& field);
 
     // Non-strict version: optional field without explicit value is compared
@@ -29,5 +29,5 @@ namespace NProtoBuf {
     bool IsEqualDefault(const Message& m1, const Message& m2);
 
     bool IsEqualFieldDefault(const Message& m1, const Message& m2, const FieldDescriptor& field);
-
-}
+ 
+} 
diff --git a/library/cpp/protobuf/util/is_equal_ut.cpp b/library/cpp/protobuf/util/is_equal_ut.cpp
index 3ca4c90dd5..b10be7bb18 100644
--- a/library/cpp/protobuf/util/is_equal_ut.cpp
+++ b/library/cpp/protobuf/util/is_equal_ut.cpp
@@ -49,7 +49,7 @@ Y_UNIT_TEST_SUITE(ProtobufIsEqual) {
         bool equalField = NProtoBuf::IsEqualField(a, b, *InnerDescr);
         UNIT_ASSERT(!equalField);
     }
-
+ 
     Y_UNIT_TEST(IsEqual3) {
         TSampleForIsEqual a;
         TSampleForIsEqual b;
@@ -75,14 +75,14 @@ Y_UNIT_TEST_SUITE(ProtobufIsEqual) {
     }
 
     Y_UNIT_TEST(IsEqualDefault) {
-        TSampleForIsEqual a;
-        TSampleForIsEqual b;
-
-        a.SetName("");
-        UNIT_ASSERT(NProtoBuf::IsEqualDefault(a, b));
-        UNIT_ASSERT(!NProtoBuf::IsEqual(a, b));
+        TSampleForIsEqual a; 
+        TSampleForIsEqual b; 
+ 
+        a.SetName(""); 
+        UNIT_ASSERT(NProtoBuf::IsEqualDefault(a, b)); 
+        UNIT_ASSERT(!NProtoBuf::IsEqual(a, b)); 
 
         UNIT_ASSERT(!NProtoBuf::IsEqualField(a, b, *NameDescr));
         UNIT_ASSERT(NProtoBuf::IsEqualFieldDefault(a, b, *NameDescr));
-    }
+    } 
 }
diff --git a/library/cpp/protobuf/util/merge.cpp b/library/cpp/protobuf/util/merge.cpp
index dc2b9cc806..4af4431d46 100644
--- a/library/cpp/protobuf/util/merge.cpp
+++ b/library/cpp/protobuf/util/merge.cpp
@@ -1,30 +1,30 @@
-#include "merge.h"
+#include "merge.h" 
 #include "simple_reflection.h"
 
 #include <google/protobuf/message.h>
 
 #include <library/cpp/protobuf/util/proto/merge.pb.h>
-
-namespace NProtoBuf {
+ 
+namespace NProtoBuf { 
     void RewriteMerge(const Message& src, Message& dst) {
         const Descriptor* d = src.GetDescriptor();
         Y_ASSERT(d == dst.GetDescriptor());
-
+ 
         for (int i = 0; i < d->field_count(); ++i) {
             if (TConstField(src, d->field(i)).Has())
                 TMutableField(dst, d->field(i)).Clear();
         }
-
+ 
         dst.MergeFrom(src);
-    }
-
+    } 
+ 
     static void ClearNonMergeable(const Message& src, Message& dst) {
         const Descriptor* d = src.GetDescriptor();
         if (d->options().GetExtension(DontMerge)) {
             dst.Clear();
             return;
         }
-
+ 
         for (int i = 0; i < d->field_count(); ++i) {
             const FieldDescriptor* fd = d->field(i);
             TConstField srcField(src, fd);
@@ -36,11 +36,11 @@ namespace NProtoBuf {
                     ClearNonMergeable(*srcField.Get<const Message*>(), *dstField.MutableMessage());
             }
         }
-    }
-
+    } 
+ 
     void CustomMerge(const Message& src, Message& dst) {
         ClearNonMergeable(src, dst);
         dst.MergeFrom(src);
-    }
-
-}
+    } 
+ 
+} 
diff --git a/library/cpp/protobuf/util/merge.h b/library/cpp/protobuf/util/merge.h
index 924975f141..847b65dd0e 100644
--- a/library/cpp/protobuf/util/merge.h
+++ b/library/cpp/protobuf/util/merge.h
@@ -1,22 +1,22 @@
-#pragma once
-
+#pragma once 
+ 
 namespace google {
     namespace protobuf {
         class Message;
     }
 }
-
+ 
 namespace NProtoBuf {
     using Message = ::google::protobuf::Message;
 }
-
-namespace NProtoBuf {
+ 
+namespace NProtoBuf { 
     // Similiar to Message::MergeFrom, overwrites existing repeated fields
     // and embedded messages completely instead of recursive merging.
     void RewriteMerge(const Message& src, Message& dst);
-
+ 
     // Does standard MergeFrom() by default, except messages/fields marked with DontMerge or DontMergeField option.
     // Such fields are merged using RewriteMerge() (i.e. destination is cleared before merging anything from source)
     void CustomMerge(const Message& src, Message& dst);
-
+ 
 }
diff --git a/library/cpp/protobuf/util/merge_ut.cpp b/library/cpp/protobuf/util/merge_ut.cpp
index 22217db183..44f4db69b7 100644
--- a/library/cpp/protobuf/util/merge_ut.cpp
+++ b/library/cpp/protobuf/util/merge_ut.cpp
@@ -1,83 +1,83 @@
-#include "merge.h"
+#include "merge.h" 
 #include <library/cpp/protobuf/util/ut/common_ut.pb.h>
-
+ 
 #include <library/cpp/testing/unittest/registar.h>
-
-using namespace NProtoBuf;
-
+ 
+using namespace NProtoBuf; 
+ 
 Y_UNIT_TEST_SUITE(ProtobufMerge) {
     static void InitProto(NProtobufUtilUt::TMergeTest & p, bool isSrc) {
-        size_t start = isSrc ? 0 : 100;
-
-        p.AddMergeInt(start + 1);
-        p.AddMergeInt(start + 2);
-
-        p.AddNoMergeInt(start + 3);
-        p.AddNoMergeInt(start + 4);
-
-        NProtobufUtilUt::TMergeTestMerge* m = p.MutableMergeSub();
-        m->SetA(start + 5);
-        m->AddB(start + 6);
-        m->AddB(start + 7);
-        m->AddC(start + 14);
-
-        if (!isSrc) {
-            // only for dst
-            NProtobufUtilUt::TMergeTestMerge* mm1 = p.AddNoMergeRepSub();
-            mm1->SetA(start + 8);
-            mm1->AddB(start + 9);
-            mm1->AddB(start + 10);
-        }
-
-        NProtobufUtilUt::TMergeTestNoMerge* mm3 = p.MutableNoMergeOptSub();
-        mm3->SetA(start + 11);
-        mm3->AddB(start + 12);
-        mm3->AddB(start + 13);
-    }
-
+        size_t start = isSrc ? 0 : 100; 
+ 
+        p.AddMergeInt(start + 1); 
+        p.AddMergeInt(start + 2); 
+ 
+        p.AddNoMergeInt(start + 3); 
+        p.AddNoMergeInt(start + 4); 
+ 
+        NProtobufUtilUt::TMergeTestMerge* m = p.MutableMergeSub(); 
+        m->SetA(start + 5); 
+        m->AddB(start + 6); 
+        m->AddB(start + 7); 
+        m->AddC(start + 14); 
+ 
+        if (!isSrc) { 
+            // only for dst 
+            NProtobufUtilUt::TMergeTestMerge* mm1 = p.AddNoMergeRepSub(); 
+            mm1->SetA(start + 8); 
+            mm1->AddB(start + 9); 
+            mm1->AddB(start + 10); 
+        } 
+ 
+        NProtobufUtilUt::TMergeTestNoMerge* mm3 = p.MutableNoMergeOptSub(); 
+        mm3->SetA(start + 11); 
+        mm3->AddB(start + 12); 
+        mm3->AddB(start + 13); 
+    } 
+ 
     Y_UNIT_TEST(CustomMerge) {
-        NProtobufUtilUt::TMergeTest src, dst;
-        InitProto(src, true);
-        InitProto(dst, false);
-
+        NProtobufUtilUt::TMergeTest src, dst; 
+        InitProto(src, true); 
+        InitProto(dst, false); 
+ 
         //        Cerr << "\nsrc: " << src.ShortDebugString() << Endl;
         //        Cerr << "dst: " << dst.ShortDebugString() << Endl;
-        NProtoBuf::CustomMerge(src, dst);
+        NProtoBuf::CustomMerge(src, dst); 
         //        Cerr << "dst2:" << dst.ShortDebugString() << Endl;
-
-        // repeated uint32 MergeInt   = 1;
-        UNIT_ASSERT_EQUAL(dst.MergeIntSize(), 4);
-        UNIT_ASSERT_EQUAL(dst.GetMergeInt(0), 101);
-        UNIT_ASSERT_EQUAL(dst.GetMergeInt(1), 102);
-        UNIT_ASSERT_EQUAL(dst.GetMergeInt(2), 1);
-        UNIT_ASSERT_EQUAL(dst.GetMergeInt(3), 2);
-
-        // repeated uint32 NoMergeInt = 2 [(DontMergeField)=true];
-        UNIT_ASSERT_EQUAL(dst.NoMergeIntSize(), 2);
-        UNIT_ASSERT_EQUAL(dst.GetNoMergeInt(0), 3);
-        UNIT_ASSERT_EQUAL(dst.GetNoMergeInt(1), 4);
-
-        // optional TMergeTestMerge MergeSub      = 3;
-        UNIT_ASSERT_EQUAL(dst.GetMergeSub().GetA(), 5);
-        UNIT_ASSERT_EQUAL(dst.GetMergeSub().BSize(), 4);
-        UNIT_ASSERT_EQUAL(dst.GetMergeSub().GetB(0), 106);
-        UNIT_ASSERT_EQUAL(dst.GetMergeSub().GetB(1), 107);
-        UNIT_ASSERT_EQUAL(dst.GetMergeSub().GetB(2), 6);
-        UNIT_ASSERT_EQUAL(dst.GetMergeSub().GetB(3), 7);
-        UNIT_ASSERT_EQUAL(dst.GetMergeSub().CSize(), 1);
-        UNIT_ASSERT_EQUAL(dst.GetMergeSub().GetC(0), 14);
-
-        // repeated TMergeTestMerge NoMergeRepSub = 4 [(DontMergeField)=true];
-        UNIT_ASSERT_EQUAL(dst.NoMergeRepSubSize(), 1);
-        UNIT_ASSERT_EQUAL(dst.GetNoMergeRepSub(0).GetA(), 108);
-        UNIT_ASSERT_EQUAL(dst.GetNoMergeRepSub(0).BSize(), 2);
-        UNIT_ASSERT_EQUAL(dst.GetNoMergeRepSub(0).GetB(0), 109);
-        UNIT_ASSERT_EQUAL(dst.GetNoMergeRepSub(0).GetB(1), 110);
-
-        // optional TMergeTestNoMerge NoMergeOptSub  = 5;
-        UNIT_ASSERT_EQUAL(dst.GetNoMergeOptSub().GetA(), 11);
-        UNIT_ASSERT_EQUAL(dst.GetNoMergeOptSub().BSize(), 2);
-        UNIT_ASSERT_EQUAL(dst.GetNoMergeOptSub().GetB(0), 12);
-        UNIT_ASSERT_EQUAL(dst.GetNoMergeOptSub().GetB(1), 13);
-    }
-}
+ 
+        // repeated uint32 MergeInt   = 1; 
+        UNIT_ASSERT_EQUAL(dst.MergeIntSize(), 4); 
+        UNIT_ASSERT_EQUAL(dst.GetMergeInt(0), 101); 
+        UNIT_ASSERT_EQUAL(dst.GetMergeInt(1), 102); 
+        UNIT_ASSERT_EQUAL(dst.GetMergeInt(2), 1); 
+        UNIT_ASSERT_EQUAL(dst.GetMergeInt(3), 2); 
+ 
+        // repeated uint32 NoMergeInt = 2 [(DontMergeField)=true]; 
+        UNIT_ASSERT_EQUAL(dst.NoMergeIntSize(), 2); 
+        UNIT_ASSERT_EQUAL(dst.GetNoMergeInt(0), 3); 
+        UNIT_ASSERT_EQUAL(dst.GetNoMergeInt(1), 4); 
+ 
+        // optional TMergeTestMerge MergeSub      = 3; 
+        UNIT_ASSERT_EQUAL(dst.GetMergeSub().GetA(), 5); 
+        UNIT_ASSERT_EQUAL(dst.GetMergeSub().BSize(), 4); 
+        UNIT_ASSERT_EQUAL(dst.GetMergeSub().GetB(0), 106); 
+        UNIT_ASSERT_EQUAL(dst.GetMergeSub().GetB(1), 107); 
+        UNIT_ASSERT_EQUAL(dst.GetMergeSub().GetB(2), 6); 
+        UNIT_ASSERT_EQUAL(dst.GetMergeSub().GetB(3), 7); 
+        UNIT_ASSERT_EQUAL(dst.GetMergeSub().CSize(), 1); 
+        UNIT_ASSERT_EQUAL(dst.GetMergeSub().GetC(0), 14); 
+ 
+        // repeated TMergeTestMerge NoMergeRepSub = 4 [(DontMergeField)=true]; 
+        UNIT_ASSERT_EQUAL(dst.NoMergeRepSubSize(), 1); 
+        UNIT_ASSERT_EQUAL(dst.GetNoMergeRepSub(0).GetA(), 108); 
+        UNIT_ASSERT_EQUAL(dst.GetNoMergeRepSub(0).BSize(), 2); 
+        UNIT_ASSERT_EQUAL(dst.GetNoMergeRepSub(0).GetB(0), 109); 
+        UNIT_ASSERT_EQUAL(dst.GetNoMergeRepSub(0).GetB(1), 110); 
+ 
+        // optional TMergeTestNoMerge NoMergeOptSub  = 5; 
+        UNIT_ASSERT_EQUAL(dst.GetNoMergeOptSub().GetA(), 11); 
+        UNIT_ASSERT_EQUAL(dst.GetNoMergeOptSub().BSize(), 2); 
+        UNIT_ASSERT_EQUAL(dst.GetNoMergeOptSub().GetB(0), 12); 
+        UNIT_ASSERT_EQUAL(dst.GetNoMergeOptSub().GetB(1), 13); 
+    } 
+} 
diff --git a/library/cpp/protobuf/util/proto/merge.proto b/library/cpp/protobuf/util/proto/merge.proto
index a937041c07..1adfa8db1e 100644
--- a/library/cpp/protobuf/util/proto/merge.proto
+++ b/library/cpp/protobuf/util/proto/merge.proto
@@ -1,11 +1,11 @@
 import "google/protobuf/descriptor.proto";
-
-// These meta-options are used for selecting proper merging method, see merge.h
-
-extend google.protobuf.MessageOptions {
-  optional bool DontMerge = 54287;
-}
-
-extend google.protobuf.FieldOptions {
-  optional bool DontMergeField = 54288;
-}
+ 
+// These meta-options are used for selecting proper merging method, see merge.h 
+ 
+extend google.protobuf.MessageOptions { 
+  optional bool DontMerge = 54287; 
+} 
+ 
+extend google.protobuf.FieldOptions { 
+  optional bool DontMergeField = 54288; 
+} 
diff --git a/library/cpp/protobuf/util/repeated_field_utils.h b/library/cpp/protobuf/util/repeated_field_utils.h
index c07bd84647..8971b8f3d2 100644
--- a/library/cpp/protobuf/util/repeated_field_utils.h
+++ b/library/cpp/protobuf/util/repeated_field_utils.h
@@ -1,7 +1,7 @@
 #pragma once
 
 #include <google/protobuf/repeated_field.h>
-#include <util/generic/vector.h>
+#include <util/generic/vector.h> 
 
 template <typename T>
 void RemoveRepeatedPtrFieldElement(google::protobuf::RepeatedPtrField<T>* repeated, unsigned index) {
@@ -15,8 +15,8 @@ void RemoveRepeatedPtrFieldElement(google::protobuf::RepeatedPtrField<T>* repeat
     }
     r.Swap(repeated);
 }
-
-namespace NProtoBuf {
+ 
+namespace NProtoBuf { 
     /// Move item to specified position
     template <typename TRepeated>
     static void MoveRepeatedFieldItem(TRepeated* field, size_t indexFrom, size_t indexTo) {
@@ -32,7 +32,7 @@ namespace NProtoBuf {
                 field->SwapElements(i, i + 1);
         }
     }
-
+ 
     template <typename T>
     static T* InsertRepeatedFieldItem(NProtoBuf::RepeatedPtrField<T>* field, size_t index) {
         T* ret = field->Add();
@@ -44,13 +44,13 @@ namespace NProtoBuf {
     static void RemoveRepeatedFieldItem(TRepeated* field, size_t index) {
         if ((int)index >= field->size())
             return;
-
+ 
         for (int i = index + 1; i < field->size(); ++i)
             field->SwapElements(i - 1, i);
-
+ 
         field->RemoveLast();
     }
-
+ 
     template <typename TRepeated, typename TPred> // suitable both for RepeatedField and RepeatedPtrField
     static void RemoveRepeatedFieldItemIf(TRepeated* repeated, TPred p) {
         auto last = std::remove_if(repeated->begin(), repeated->end(), p);
@@ -60,7 +60,7 @@ namespace NProtoBuf {
                 repeated->RemoveLast();
         }
     }
-
+ 
     namespace NImpl {
         template <typename TRepeated>
         static void ShiftLeft(TRepeated* field, int begIndex, int endIndex, size_t shiftSize) {
@@ -73,24 +73,24 @@ namespace NProtoBuf {
     }
 
     // Remove several items at once, could be more efficient compared to calling RemoveRepeatedFieldItem several times
-    template <typename TRepeated>
+    template <typename TRepeated> 
     static void RemoveRepeatedFieldItems(TRepeated* field, const TVector<size_t>& sortedIndices) {
         if (sortedIndices.empty())
             return;
-
+ 
         size_t shift = 1;
         for (size_t i = 1; i < sortedIndices.size(); ++i, ++shift)
             NImpl::ShiftLeft(field, sortedIndices[i - 1] + 1, sortedIndices[i], shift);
         NImpl::ShiftLeft(field, sortedIndices.back() + 1, field->size(), shift);
-
+ 
         for (; shift > 0; --shift)
             field->RemoveLast();
     }
-
+ 
     template <typename TRepeated>
     static void ReverseRepeatedFieldItems(TRepeated* field) {
         for (int i1 = 0, i2 = field->size() - 1; i1 < i2; ++i1, --i2)
             field->SwapElements(i1, i2);
     }
-
-}
+ 
+} 
diff --git a/library/cpp/protobuf/util/simple_reflection.h b/library/cpp/protobuf/util/simple_reflection.h
index 61e877a787..baee5e4a53 100644
--- a/library/cpp/protobuf/util/simple_reflection.h
+++ b/library/cpp/protobuf/util/simple_reflection.h
@@ -1,18 +1,18 @@
-#pragma once
-
+#pragma once 
+ 
 #include "cast.h"
 #include "path.h"
-#include "traits.h"
-
+#include "traits.h" 
+ 
 #include <google/protobuf/descriptor.h>
 #include <google/protobuf/message.h>
-
+ 
 #include <util/generic/maybe.h>
 #include <util/generic/typetraits.h>
 #include <util/generic/vector.h>
 #include <util/system/defaults.h>
 
-namespace NProtoBuf {
+namespace NProtoBuf { 
     class TConstField {
     public:
         TConstField(const Message& msg, const FieldDescriptor* fd)
@@ -21,11 +21,11 @@ namespace NProtoBuf {
         {
             Y_ASSERT(Fd && Fd->containing_type() == Msg.GetDescriptor());
         }
-
+ 
         static TMaybe<TConstField> ByPath(const Message& msg, const TStringBuf& path);
         static TMaybe<TConstField> ByPath(const Message& msg, const TVector<const FieldDescriptor*>& fieldsPath);
         static TMaybe<TConstField> ByPath(const Message& msg, const TFieldPath& fieldsPath);
-
+ 
         const Message& Parent() const {
             return Msg;
         }
@@ -33,50 +33,50 @@ namespace NProtoBuf {
         const FieldDescriptor* Field() const {
             return Fd;
         }
-
+ 
         bool HasValue() const {
             return IsRepeated() ? Refl().FieldSize(Msg, Fd) > 0
                                 : Refl().HasField(Msg, Fd);
         }
-
+ 
         // deprecated, use HasValue() instead
         bool Has() const {
             return HasValue();
         }
-
+ 
         size_t Size() const {
             return IsRepeated() ? Refl().FieldSize(Msg, Fd)
                                 : (Refl().HasField(Msg, Fd) ? 1 : 0);
         }
-
+ 
         template <typename T>
         inline typename TSelectCppType<T>::T Get(size_t index = 0) const;
-
+ 
         template <typename TMsg>
         inline const TMsg* GetAs(size_t index = 0) const {
             // casting version of Get
             return IsMessageInstance<TMsg>() ? CheckedCast<const TMsg*>(Get<const Message*>(index)) : nullptr;
         }
-
+ 
         template <typename T>
         bool IsInstance() const {
             return CppType() == TSelectCppType<T>::Result;
         }
-
+ 
         template <typename TMsg>
         bool IsMessageInstance() const {
             return IsMessage() && Fd->message_type() == TMsg::descriptor();
         }
-
+ 
         template <typename TMsg>
         bool IsInstance(std::enable_if_t<std::is_base_of<Message, TMsg>::value && !std::is_same<Message, TMsg>::value, void>* = NULL) const { // template will be selected when specifying Message children types
             return IsMessage() && Fd->message_type() == TMsg::descriptor();
         }
-
+ 
         bool IsString() const {
             return CppType() == FieldDescriptor::CPPTYPE_STRING;
         }
-
+ 
         bool IsMessage() const {
             return CppType() == FieldDescriptor::CPPTYPE_MESSAGE;
         }
@@ -95,11 +95,11 @@ namespace NProtoBuf {
         bool IsRepeated() const {
             return Fd->is_repeated();
         }
-
+ 
         FieldDescriptor::CppType CppType() const {
             return Fd->cpp_type();
         }
-
+ 
         const Reflection& Refl() const {
             return *Msg.GetReflection();
         }
@@ -107,23 +107,23 @@ namespace NProtoBuf {
         [[noreturn]] void RaiseUnknown() const {
             ythrow yexception() << "Unknown field cpp-type: " << (size_t)CppType();
         }
-
+ 
         bool IsSameField(const TConstField& other) const {
             return &Parent() == &other.Parent() && Field() == other.Field();
         }
-
+ 
     protected:
         const Message& Msg;
         const FieldDescriptor* Fd;
     };
-
+ 
     class TMutableField: public TConstField {
     public:
         TMutableField(Message& msg, const FieldDescriptor* fd)
             : TConstField(msg, fd)
         {
         }
-
+ 
         static TMaybe<TMutableField> ByPath(Message& msg, const TStringBuf& path, bool createPath = false);
         static TMaybe<TMutableField> ByPath(Message& msg, const TVector<const FieldDescriptor*>& fieldsPath, bool createPath = false);
         static TMaybe<TMutableField> ByPath(Message& msg, const TFieldPath& fieldsPath, bool createPath = false);
@@ -131,26 +131,26 @@ namespace NProtoBuf {
         Message* MutableParent() {
             return Mut();
         }
-
+ 
         template <typename T>
         inline void Set(T value, size_t index = 0);
-
+ 
         template <typename T>
         inline void Add(T value);
 
         inline void MergeFrom(const TConstField& src);
-
+ 
         inline void Clear() {
             Refl().ClearField(Mut(), Fd);
         }
         /*
-    void Swap(TMutableField& f) {
+    void Swap(TMutableField& f) { 
         Y_ASSERT(Field() == f.Field());
-
-        // not implemented yet, TODO: implement when Reflection::Mutable(Ptr)RepeatedField
-        // is ported into arcadia protobuf library from up-stream.
-    }
-*/
+ 
+        // not implemented yet, TODO: implement when Reflection::Mutable(Ptr)RepeatedField 
+        // is ported into arcadia protobuf library from up-stream. 
+    } 
+*/ 
         inline void RemoveLast() {
             Y_ASSERT(HasValue());
             if (IsRepeated())
@@ -158,7 +158,7 @@ namespace NProtoBuf {
             else
                 Clear();
         }
-
+ 
         inline void SwapElements(size_t index1, size_t index2) {
             Y_ASSERT(IsRepeated());
             Y_ASSERT(index1 < Size());
@@ -188,7 +188,7 @@ namespace NProtoBuf {
                 return Refl().MutableMessage(Mut(), Fd);
             }
         }
-
+ 
         template <typename TMsg>
         inline TMsg* AddMessage() {
             return CheckedCast<TMsg*>(AddMessage());
@@ -207,9 +207,9 @@ namespace NProtoBuf {
         template <typename T>
         inline void MergeValue(T srcValue);
     };
-
+ 
     // template implementations
-
+ 
     template <typename T>
     inline typename TSelectCppType<T>::T TConstField::Get(size_t index) const {
         Y_ASSERT(index < Size() || !Fd->is_repeated() && index == 0); // Get for single fields is always allowed because of default values
@@ -222,8 +222,8 @@ namespace NProtoBuf {
                 RaiseUnknown();
         }
 #undef TMP_MACRO_FOR_CPPTYPE
-    }
-
+    } 
+ 
     template <typename T>
     inline void TMutableField::Set(T value, size_t index) {
         Y_ASSERT(!IsRepeated() && index == 0 || index < Size());
@@ -237,8 +237,8 @@ namespace NProtoBuf {
                 RaiseUnknown();
         }
 #undef TMP_MACRO_FOR_CPPTYPE
-    }
-
+    } 
+ 
     template <typename T>
     inline void TMutableField::Add(T value) {
 #define TMP_MACRO_FOR_CPPTYPE(CPPTYPE)                                                                       \
@@ -251,13 +251,13 @@ namespace NProtoBuf {
                 RaiseUnknown();
         }
 #undef TMP_MACRO_FOR_CPPTYPE
-    }
-
+    } 
+ 
     template <typename T>
     inline void TMutableField::MergeValue(T srcValue) {
         Add(srcValue);
     }
-
+ 
     template <>
     inline void TMutableField::MergeValue<const Message*>(const Message* srcValue) {
         if (IsRepeated()) {
diff --git a/library/cpp/protobuf/util/simple_reflection_ut.cpp b/library/cpp/protobuf/util/simple_reflection_ut.cpp
index 169d4703c9..347fd8d980 100644
--- a/library/cpp/protobuf/util/simple_reflection_ut.cpp
+++ b/library/cpp/protobuf/util/simple_reflection_ut.cpp
@@ -156,21 +156,21 @@ Y_UNIT_TEST_SUITE(ProtobufSimpleReflection) {
             {
                 TMaybe<TConstField> field = TConstField::ByPath(msg, "OneStr");
                 UNIT_ASSERT(field);
-                UNIT_ASSERT(field->HasValue());
+                UNIT_ASSERT(field->HasValue()); 
                 UNIT_ASSERT_VALUES_EQUAL("1", (field->Get<TString>()));
             }
 
             {
                 TMaybe<TConstField> field = TConstField::ByPath(msg, "OneMsg");
                 UNIT_ASSERT(field);
-                UNIT_ASSERT(field->HasValue());
+                UNIT_ASSERT(field->HasValue()); 
                 UNIT_ASSERT(field->IsMessageInstance<TInnerSample>());
             }
 
             {
                 TMaybe<TConstField> field = TConstField::ByPath(msg, "/OneMsg/RepInt");
                 UNIT_ASSERT(field);
-                UNIT_ASSERT(field->HasValue());
+                UNIT_ASSERT(field->HasValue()); 
                 UNIT_ASSERT_VALUES_EQUAL(2, field->Size());
                 UNIT_ASSERT_VALUES_EQUAL(2, field->Get<int>(0));
                 UNIT_ASSERT_VALUES_EQUAL(3, field->Get<int>(1));
@@ -179,7 +179,7 @@ Y_UNIT_TEST_SUITE(ProtobufSimpleReflection) {
             {
                 TMaybe<TConstField> field = TConstField::ByPath(msg, "RepMsg/RepInt");
                 UNIT_ASSERT(field);
-                UNIT_ASSERT(field->HasValue());
+                UNIT_ASSERT(field->HasValue()); 
                 UNIT_ASSERT_VALUES_EQUAL(2, field->Size());
                 UNIT_ASSERT_VALUES_EQUAL(4, field->Get<int>(0));
                 UNIT_ASSERT_VALUES_EQUAL(5, field->Get<int>(1));
@@ -194,13 +194,13 @@ Y_UNIT_TEST_SUITE(ProtobufSimpleReflection) {
             {
                 TMaybe<TConstField> field = TConstField::ByPath(msg, "OneStr");
                 UNIT_ASSERT(field);
-                UNIT_ASSERT(!field->HasValue());
+                UNIT_ASSERT(!field->HasValue()); 
             }
 
             {
                 TMaybe<TConstField> field = TConstField::ByPath(msg, "OneMsg/RepInt");
                 UNIT_ASSERT(field);
-                UNIT_ASSERT(!field->HasValue());
+                UNIT_ASSERT(!field->HasValue()); 
             }
 
             {
@@ -217,25 +217,25 @@ Y_UNIT_TEST_SUITE(ProtobufSimpleReflection) {
             {
                 TMaybe<TMutableField> field = TMutableField::ByPath(msg, "OneStr");
                 UNIT_ASSERT(field);
-                UNIT_ASSERT(!field->HasValue());
+                UNIT_ASSERT(!field->HasValue()); 
                 field->Set(TString("zz"));
-                UNIT_ASSERT(field->HasValue());
+                UNIT_ASSERT(field->HasValue()); 
                 UNIT_ASSERT_VALUES_EQUAL("zz", msg.GetOneStr());
             }
 
             {
                 TMaybe<TMutableField> field = TMutableField::ByPath(msg, "OneStr");
                 UNIT_ASSERT(field);
-                UNIT_ASSERT(field->HasValue());
+                UNIT_ASSERT(field->HasValue()); 
                 field->Set(TString("dd"));
-                UNIT_ASSERT(field->HasValue());
+                UNIT_ASSERT(field->HasValue()); 
                 UNIT_ASSERT_VALUES_EQUAL("dd", msg.GetOneStr());
             }
 
             {
                 TMaybe<TMutableField> field = TMutableField::ByPath(msg, "OneMsg/RepInt");
                 UNIT_ASSERT(field);
-                UNIT_ASSERT(!field->HasValue());
+                UNIT_ASSERT(!field->HasValue()); 
                 field->Add(10);
                 UNIT_ASSERT_VALUES_EQUAL(10, msg.GetOneMsg().GetRepInt(0));
             }
@@ -253,13 +253,13 @@ Y_UNIT_TEST_SUITE(ProtobufSimpleReflection) {
             {
                 TMaybe<TMutableField> field = TMutableField::ByPath(msg, "OneStr", true);
                 UNIT_ASSERT(field);
-                UNIT_ASSERT(!field->HasValue());
+                UNIT_ASSERT(!field->HasValue()); 
             }
 
             {
                 TMaybe<TMutableField> field = TMutableField::ByPath(msg, "OneMsg/RepInt", true);
                 UNIT_ASSERT(field);
-                UNIT_ASSERT(!field->HasValue());
+                UNIT_ASSERT(!field->HasValue()); 
                 UNIT_ASSERT(msg.HasOneMsg());
                 field->Add(10);
                 UNIT_ASSERT_VALUES_EQUAL(10, msg.GetOneMsg().GetRepInt(0));
@@ -270,7 +270,7 @@ Y_UNIT_TEST_SUITE(ProtobufSimpleReflection) {
                 TMaybe<TMutableField> fieldCopy = TMutableField::ByPath(msg, "RepMsg/RepInt", true);
                 Y_UNUSED(fieldCopy);
                 UNIT_ASSERT(field);
-                UNIT_ASSERT(!field->HasValue());
+                UNIT_ASSERT(!field->HasValue()); 
                 UNIT_ASSERT_VALUES_EQUAL(1, msg.RepMsgSize());
                 field->Add(12);
                 UNIT_ASSERT_VALUES_EQUAL(12, field->Get<int>());
diff --git a/library/cpp/protobuf/util/sort.h b/library/cpp/protobuf/util/sort.h
index 985ba6f689..bd851b4e5a 100644
--- a/library/cpp/protobuf/util/sort.h
+++ b/library/cpp/protobuf/util/sort.h
@@ -1,15 +1,15 @@
-#pragma once
-
+#pragma once 
+ 
 #include <google/protobuf/message.h>
-
-#include <util/generic/vector.h>
-#include <util/generic/algorithm.h>
-
-namespace NProtoBuf {
+ 
+#include <util/generic/vector.h> 
+#include <util/generic/algorithm.h> 
+ 
+namespace NProtoBuf { 
     // TComparePtr is something like:
     // typedef bool (*TComparePtr)(const Message* msg1, const Message* msg2);
     // typedef bool (*TComparePtr)(const TProto* msg1, const TProto* msg2);
-
+ 
     template <typename TProto, typename TComparePtr>
     void SortMessages(RepeatedPtrField<TProto>& msgs, TComparePtr cmp) {
         TVector<TProto*> ptrs;
@@ -17,12 +17,12 @@ namespace NProtoBuf {
         while (msgs.size()) {
             ptrs.push_back(msgs.ReleaseLast());
         }
-
+ 
         ::StableSort(ptrs.begin(), ptrs.end(), cmp);
 
         for (size_t i = 0; i < ptrs.size(); ++i) {
             msgs.AddAllocated(ptrs[i]);
         }
-    }
-
-}
+    } 
+ 
+} 
diff --git a/library/cpp/protobuf/util/traits.h b/library/cpp/protobuf/util/traits.h
index 50f036d0ea..4be520f22a 100644
--- a/library/cpp/protobuf/util/traits.h
+++ b/library/cpp/protobuf/util/traits.h
@@ -1,16 +1,16 @@
-#pragma once
-
-#include <util/generic/typetraits.h>
-
+#pragma once 
+ 
+#include <util/generic/typetraits.h> 
+ 
 #include <google/protobuf/descriptor.h>
 #include <google/protobuf/message.h>
-
-namespace NProtoBuf {
-// this nasty windows.h macro interfers with protobuf::Reflection::GetMessage()
-#if defined(GetMessage)
-#undef GetMessage
-#endif
-
+ 
+namespace NProtoBuf { 
+// this nasty windows.h macro interfers with protobuf::Reflection::GetMessage() 
+#if defined(GetMessage) 
+#undef GetMessage 
+#endif 
+ 
     struct TCppTypeTraitsBase {
         static inline bool Has(const Message& msg, const FieldDescriptor* field) { // non-repeated
             return msg.GetReflection()->HasField(msg, field);
@@ -18,24 +18,24 @@ namespace NProtoBuf {
         static inline size_t Size(const Message& msg, const FieldDescriptor* field) { // repeated
             return msg.GetReflection()->FieldSize(msg, field);
         }
-
+ 
         static inline void Clear(Message& msg, const FieldDescriptor* field) {
             msg.GetReflection()->ClearField(&msg, field);
         }
-
+ 
         static inline void RemoveLast(Message& msg, const FieldDescriptor* field) {
             msg.GetReflection()->RemoveLast(&msg, field);
         }
-
+ 
         static inline void SwapElements(Message& msg, const FieldDescriptor* field, int index1, int index2) {
             msg.GetReflection()->SwapElements(&msg, field, index1, index2);
         }
     };
-
+ 
     // default value accessor
     template <FieldDescriptor::CppType cpptype>
     struct TCppTypeTraitsDefault;
-
+ 
 #define DECLARE_CPPTYPE_DEFAULT(cpptype, method)          \
     template <>                                           \
     struct TCppTypeTraitsDefault<cpptype> {               \
@@ -62,23 +62,23 @@ namespace NProtoBuf {
     template <FieldDescriptor::CppType cpptype>
     struct TCppTypeTraits : TCppTypeTraitsBase {
         static const FieldDescriptor::CppType CppType = cpptype;
-
+ 
         struct T {};
         static T Get(const Message& msg, const FieldDescriptor* field);
         static T GetRepeated(const Message& msg, const FieldDescriptor* field, int index);
         static T GetDefault(const FieldDescriptor* field);
-
+ 
         static void Set(Message& msg, const FieldDescriptor* field, T value);
         static void AddRepeated(Message& msg, const FieldDescriptor* field, T value);
         static void SetRepeated(Message& msg, const FieldDescriptor* field, int index, T value);
     };
-
+ 
     // any type T -> CppType
     template <typename T>
     struct TSelectCppType {
         //static const FieldDescriptor::CppType Result = FieldDescriptor::MAX_CPPTYPE;
     };
-
+ 
 #define DECLARE_CPPTYPE_TRAITS(cpptype, type, method)                                                    \
     template <>                                                                                          \
     struct TCppTypeTraits<cpptype>: public TCppTypeTraitsBase {                                          \
@@ -108,8 +108,8 @@ namespace NProtoBuf {
     struct TSelectCppType<type> {                                                                        \
         static const FieldDescriptor::CppType Result = cpptype;                                          \
         typedef type T;                                                                                  \
-    };
-
+    }; 
+ 
     DECLARE_CPPTYPE_TRAITS(FieldDescriptor::CPPTYPE_INT32, i32, Int32);
     DECLARE_CPPTYPE_TRAITS(FieldDescriptor::CPPTYPE_INT64, i64, Int64);
     DECLARE_CPPTYPE_TRAITS(FieldDescriptor::CPPTYPE_UINT32, ui32, UInt32);
@@ -120,15 +120,15 @@ namespace NProtoBuf {
     DECLARE_CPPTYPE_TRAITS(FieldDescriptor::CPPTYPE_ENUM, const EnumValueDescriptor*, Enum);
     DECLARE_CPPTYPE_TRAITS(FieldDescriptor::CPPTYPE_STRING, TString, String);
     //DECLARE_CPPTYPE_TRAITS(FieldDescriptor::CPPTYPE_MESSAGE, const Message&, Message);
-
-#undef DECLARE_CPPTYPE_TRAITS
-
+ 
+#undef DECLARE_CPPTYPE_TRAITS 
+ 
     // specialization for message pointer
     template <>
     struct TCppTypeTraits<FieldDescriptor::CPPTYPE_MESSAGE>: public TCppTypeTraitsBase {
         typedef const Message* T;
         static const FieldDescriptor::CppType CppType = FieldDescriptor::CPPTYPE_MESSAGE;
-
+ 
         static inline T Get(const Message& msg, const FieldDescriptor* field) {
             return &(msg.GetReflection()->GetMessage(msg, field));
         }
@@ -151,29 +151,29 @@ namespace NProtoBuf {
             return ret;
         }
     };
-
+ 
     template <>
     struct TSelectCppType<const Message*> {
         static const FieldDescriptor::CppType Result = FieldDescriptor::CPPTYPE_MESSAGE;
         typedef const Message* T;
     };
-
+ 
     template <>
     struct TSelectCppType<Message> {
         static const FieldDescriptor::CppType Result = FieldDescriptor::CPPTYPE_MESSAGE;
         typedef const Message* T;
     };
-
+ 
     template <FieldDescriptor::CppType CppType, bool Repeated>
     struct TFieldTraits {
         typedef TCppTypeTraits<CppType> TBaseTraits;
         typedef typename TBaseTraits::T T;
-
+ 
         static inline T Get(const Message& msg, const FieldDescriptor* field, size_t index = 0) {
             Y_ASSERT(index == 0);
             return TBaseTraits::Get(msg, field);
         }
-
+ 
         static inline T GetDefault(const FieldDescriptor* field) {
             return TBaseTraits::GetDefault(field);
         }
@@ -181,11 +181,11 @@ namespace NProtoBuf {
         static inline bool Has(const Message& msg, const FieldDescriptor* field) {
             return TBaseTraits::Has(msg, field);
         }
-
+ 
         static inline size_t Size(const Message& msg, const FieldDescriptor* field) {
             return Has(msg, field);
         }
-
+ 
         static inline void Set(Message& msg, const FieldDescriptor* field, T value, size_t index = 0) {
             Y_ASSERT(index == 0);
             TBaseTraits::Set(msg, field, value);
@@ -195,28 +195,28 @@ namespace NProtoBuf {
             TBaseTraits::Set(msg, field, value);
         }
     };
-
+ 
     template <FieldDescriptor::CppType CppType>
     struct TFieldTraits<CppType, true> {
         typedef TCppTypeTraits<CppType> TBaseTraits;
         typedef typename TBaseTraits::T T;
-
+ 
         static inline T Get(const Message& msg, const FieldDescriptor* field, size_t index = 0) {
             return TBaseTraits::GetRepeated(msg, field, index);
         }
-
+ 
         static inline T GetDefault(const FieldDescriptor* field) {
             return TBaseTraits::GetDefault(field);
         }
-
+ 
         static inline size_t Size(const Message& msg, const FieldDescriptor* field) {
             return TBaseTraits::Size(msg, field);
         }
-
+ 
         static inline bool Has(const Message& msg, const FieldDescriptor* field) {
             return Size(msg, field) > 0;
         }
-
+ 
         static inline void Set(Message& msg, const FieldDescriptor* field, T value, size_t index = 0) {
             TBaseTraits::SetRepeated(msg, field, index, value);
         }
@@ -225,28 +225,28 @@ namespace NProtoBuf {
             TBaseTraits::AddRepeated(msg, field, value);
         }
     };
-
+ 
     // Simpler interface at the cost of checking is_repeated() on each call
     template <FieldDescriptor::CppType CppType>
     struct TSimpleFieldTraits {
         typedef TFieldTraits<CppType, true> TRepeated;
         typedef TFieldTraits<CppType, false> TSingle;
         typedef typename TRepeated::T T;
-
+ 
         static inline size_t Size(const Message& msg, const FieldDescriptor* field) {
             if (field->is_repeated())
                 return TRepeated::Size(msg, field);
             else
                 return TSingle::Size(msg, field);
         }
-
+ 
         static inline bool Has(const Message& msg, const FieldDescriptor* field) {
             if (field->is_repeated())
                 return TRepeated::Has(msg, field);
             else
                 return TSingle::Has(msg, field);
         }
-
+ 
         static inline T Get(const Message& msg, const FieldDescriptor* field, size_t index = 0) {
             Y_ASSERT(index < Size(msg, field) || !field->is_repeated() && index == 0); // Get for single fields is always allowed because of default values
             if (field->is_repeated())
@@ -254,11 +254,11 @@ namespace NProtoBuf {
             else
                 return TSingle::Get(msg, field, index);
         }
-
+ 
         static inline T GetDefault(const FieldDescriptor* field) {
             return TSingle::GetDefault(field);
         }
-
+ 
         static inline void Set(Message& msg, const FieldDescriptor* field, T value, size_t index = 0) {
             Y_ASSERT(!field->is_repeated() && index == 0 || index < Size(msg, field));
             if (field->is_repeated())
@@ -266,7 +266,7 @@ namespace NProtoBuf {
             else
                 TSingle::Set(msg, field, value, index);
         }
-
+ 
         static inline void Add(Message& msg, const FieldDescriptor* field, T value) {
             if (field->is_repeated())
                 TRepeated::Add(msg, field, value);
@@ -274,9 +274,9 @@ namespace NProtoBuf {
                 TSingle::Add(msg, field, value);
         }
     };
-
+ 
     // some cpp-type groups
-
+ 
     template <FieldDescriptor::CppType CppType>
     struct TIsIntegerCppType {
         enum {
@@ -285,16 +285,16 @@ namespace NProtoBuf {
                      CppType == FieldDescriptor::CPPTYPE_UINT32 ||
                      CppType == FieldDescriptor::CPPTYPE_UINT64
         };
-    };
-
+    }; 
+ 
     template <FieldDescriptor::CppType CppType>
     struct TIsFloatCppType {
         enum {
             Result = CppType == FieldDescriptor::CPPTYPE_FLOAT ||
                      CppType == FieldDescriptor::CPPTYPE_DOUBLE
         };
-    };
-
+    }; 
+ 
     template <FieldDescriptor::CppType CppType>
     struct TIsNumericCppType {
         enum {
@@ -302,19 +302,19 @@ namespace NProtoBuf {
                      TIsIntegerCppType<CppType>::Result ||
                      TIsFloatCppType<CppType>::Result
         };
-    };
-
+    }; 
+ 
     // a helper macro for splitting flow by cpp-type (e.g. in a switch)
-
+ 
 #define APPLY_TMP_MACRO_FOR_ALL_CPPTYPES()                            \
-    TMP_MACRO_FOR_CPPTYPE(NProtoBuf::FieldDescriptor::CPPTYPE_INT32)  \
-    TMP_MACRO_FOR_CPPTYPE(NProtoBuf::FieldDescriptor::CPPTYPE_INT64)  \
-    TMP_MACRO_FOR_CPPTYPE(NProtoBuf::FieldDescriptor::CPPTYPE_UINT32) \
-    TMP_MACRO_FOR_CPPTYPE(NProtoBuf::FieldDescriptor::CPPTYPE_UINT64) \
-    TMP_MACRO_FOR_CPPTYPE(NProtoBuf::FieldDescriptor::CPPTYPE_DOUBLE) \
-    TMP_MACRO_FOR_CPPTYPE(NProtoBuf::FieldDescriptor::CPPTYPE_FLOAT)  \
-    TMP_MACRO_FOR_CPPTYPE(NProtoBuf::FieldDescriptor::CPPTYPE_BOOL)   \
-    TMP_MACRO_FOR_CPPTYPE(NProtoBuf::FieldDescriptor::CPPTYPE_ENUM)   \
-    TMP_MACRO_FOR_CPPTYPE(NProtoBuf::FieldDescriptor::CPPTYPE_STRING) \
-    TMP_MACRO_FOR_CPPTYPE(NProtoBuf::FieldDescriptor::CPPTYPE_MESSAGE)
+    TMP_MACRO_FOR_CPPTYPE(NProtoBuf::FieldDescriptor::CPPTYPE_INT32)  \ 
+    TMP_MACRO_FOR_CPPTYPE(NProtoBuf::FieldDescriptor::CPPTYPE_INT64)  \ 
+    TMP_MACRO_FOR_CPPTYPE(NProtoBuf::FieldDescriptor::CPPTYPE_UINT32) \ 
+    TMP_MACRO_FOR_CPPTYPE(NProtoBuf::FieldDescriptor::CPPTYPE_UINT64) \ 
+    TMP_MACRO_FOR_CPPTYPE(NProtoBuf::FieldDescriptor::CPPTYPE_DOUBLE) \ 
+    TMP_MACRO_FOR_CPPTYPE(NProtoBuf::FieldDescriptor::CPPTYPE_FLOAT)  \ 
+    TMP_MACRO_FOR_CPPTYPE(NProtoBuf::FieldDescriptor::CPPTYPE_BOOL)   \ 
+    TMP_MACRO_FOR_CPPTYPE(NProtoBuf::FieldDescriptor::CPPTYPE_ENUM)   \ 
+    TMP_MACRO_FOR_CPPTYPE(NProtoBuf::FieldDescriptor::CPPTYPE_STRING) \ 
+    TMP_MACRO_FOR_CPPTYPE(NProtoBuf::FieldDescriptor::CPPTYPE_MESSAGE) 
 }
diff --git a/library/cpp/protobuf/util/ut/common_ut.proto b/library/cpp/protobuf/util/ut/common_ut.proto
index 9cf803ffbf..871b1b9832 100644
--- a/library/cpp/protobuf/util/ut/common_ut.proto
+++ b/library/cpp/protobuf/util/ut/common_ut.proto
@@ -1,29 +1,29 @@
 import "google/protobuf/descriptor.proto";
 import "library/cpp/protobuf/util/proto/merge.proto";
-
-package NProtobufUtilUt;
-
-extend google.protobuf.FieldOptions {
-  optional bool XXX = 53772;
-}
-
-message TWalkTest {
-    optional uint32 OptInt = 1 [(XXX)=true];
-    repeated uint32 RepInt = 2;
-
-    optional string OptStr = 3;
-    repeated string RepStr = 4 [(XXX)=true];
-
-    optional TWalkTest OptSub = 5 [(XXX)=true];
-    repeated TWalkTest RepSub = 6;
-}
-
+ 
+package NProtobufUtilUt; 
+ 
+extend google.protobuf.FieldOptions { 
+  optional bool XXX = 53772; 
+} 
+ 
+message TWalkTest { 
+    optional uint32 OptInt = 1 [(XXX)=true]; 
+    repeated uint32 RepInt = 2; 
+ 
+    optional string OptStr = 3; 
+    repeated string RepStr = 4 [(XXX)=true]; 
+ 
+    optional TWalkTest OptSub = 5 [(XXX)=true]; 
+    repeated TWalkTest RepSub = 6; 
+} 
+ 
 message TWalkTestCyclic {
    optional TNested OptNested = 1;
    repeated uint64 OptInt64 = 2;
    optional TWalkTestCyclic OptSub = 3;
    optional TEnum OptEnum = 4;
-
+ 
    message TNested {
       optional uint32 OptInt32 = 1;
       optional TWalkTestCyclic OptSubNested = 2;
@@ -37,27 +37,27 @@ message TWalkTestCyclic {
     }
 }
 
-message TMergeTestNoMerge {
-   option (DontMerge) = true;
-
-   optional uint32 A = 1;
-   repeated uint32 B = 2;
-}
-
-message TMergeTestMerge {
-   optional uint32 A = 1;
-   repeated uint32 B = 2;
-   repeated uint32 C = 3 [(DontMergeField)=true];
-}
-
-message TMergeTest {
-   repeated uint32 MergeInt   = 1;
-   repeated uint32 NoMergeInt = 2 [(DontMergeField)=true];
-
-   optional TMergeTestMerge MergeSub      = 3;
-   repeated TMergeTestMerge NoMergeRepSub = 4 [(DontMergeField)=true];
-   optional TMergeTestNoMerge NoMergeOptSub  = 5;
-}
+message TMergeTestNoMerge { 
+   option (DontMerge) = true; 
+ 
+   optional uint32 A = 1; 
+   repeated uint32 B = 2; 
+} 
+ 
+message TMergeTestMerge { 
+   optional uint32 A = 1; 
+   repeated uint32 B = 2; 
+   repeated uint32 C = 3 [(DontMergeField)=true]; 
+} 
+ 
+message TMergeTest { 
+   repeated uint32 MergeInt   = 1; 
+   repeated uint32 NoMergeInt = 2 [(DontMergeField)=true]; 
+ 
+   optional TMergeTestMerge MergeSub      = 3; 
+   repeated TMergeTestMerge NoMergeRepSub = 4 [(DontMergeField)=true]; 
+   optional TMergeTestNoMerge NoMergeOptSub  = 5; 
+} 
 
 message TTextTest {
     optional uint32 Foo = 1;
diff --git a/library/cpp/protobuf/util/ut/sample_for_simple_reflection.proto b/library/cpp/protobuf/util/ut/sample_for_simple_reflection.proto
index cca1dd869a..e9c5c569af 100644
--- a/library/cpp/protobuf/util/ut/sample_for_simple_reflection.proto
+++ b/library/cpp/protobuf/util/ut/sample_for_simple_reflection.proto
@@ -11,15 +11,15 @@ message TSample {
     repeated string RepStr = 4;
     optional string AnotherOneStr = 5;
 
-    optional int32 OneInt = 6;
-    repeated int32 RepInt = 7;
-
-    enum EEnum {
-        V1 = 1;
-        V2 = 2;
-    }
-    optional EEnum OneEnum = 8;
-    repeated EEnum RepEnum = 9;
-
+    optional int32 OneInt = 6; 
+    repeated int32 RepInt = 7; 
+ 
+    enum EEnum { 
+        V1 = 1; 
+        V2 = 2; 
+    } 
+    optional EEnum OneEnum = 8; 
+    repeated EEnum RepEnum = 9; 
+ 
     extensions 100 to 199;
 }
diff --git a/library/cpp/protobuf/util/ut/ya.make b/library/cpp/protobuf/util/ut/ya.make
index 701ba9a8c8..182871179b 100644
--- a/library/cpp/protobuf/util/ut/ya.make
+++ b/library/cpp/protobuf/util/ut/ya.make
@@ -6,14 +6,14 @@ SRCS(
     extensions.proto
     sample_for_is_equal.proto
     sample_for_simple_reflection.proto
-    common_ut.proto
+    common_ut.proto 
     pb_io_ut.cpp
     is_equal_ut.cpp
     iterators_ut.cpp
     simple_reflection_ut.cpp
     repeated_field_utils_ut.cpp
     walk_ut.cpp
-    merge_ut.cpp
+    merge_ut.cpp 
 )
 
 END()
diff --git a/library/cpp/protobuf/util/walk.h b/library/cpp/protobuf/util/walk.h
index d15d76562d..944a80dc95 100644
--- a/library/cpp/protobuf/util/walk.h
+++ b/library/cpp/protobuf/util/walk.h
@@ -1,13 +1,13 @@
-#pragma once
-
-#include "simple_reflection.h"
-
+#pragma once 
+ 
+#include "simple_reflection.h" 
+ 
 #include <google/protobuf/message.h>
 #include <google/protobuf/descriptor.h>
-
+ 
 #include <functional>
 
-namespace NProtoBuf {
+namespace NProtoBuf { 
     // Apply @onField processor to each field in @msg (even empty)
     // Do not walk deeper the field if the field is an empty message
     // Returned bool defines if we should walk down deeper to current node children (true), or not (false)
diff --git a/library/cpp/protobuf/util/walk_ut.cpp b/library/cpp/protobuf/util/walk_ut.cpp
index 2ea6071b17..0597867b32 100644
--- a/library/cpp/protobuf/util/walk_ut.cpp
+++ b/library/cpp/protobuf/util/walk_ut.cpp
@@ -1,56 +1,56 @@
-#include "walk.h"
-#include "simple_reflection.h"
+#include "walk.h" 
+#include "simple_reflection.h" 
 #include <library/cpp/protobuf/util/ut/common_ut.pb.h>
-
+ 
 #include <library/cpp/testing/unittest/registar.h>
-
-using namespace NProtoBuf;
-
+ 
+using namespace NProtoBuf; 
+ 
 Y_UNIT_TEST_SUITE(ProtobufWalk) {
     static void InitProto(NProtobufUtilUt::TWalkTest & p, int level = 0) {
-        p.SetOptInt(1);
-        p.AddRepInt(2);
-        p.AddRepInt(3);
-
-        p.SetOptStr("123");
-        p.AddRepStr("*");
-        p.AddRepStr("abcdef");
-        p.AddRepStr("1234");
-
-        if (level == 0) {
-            InitProto(*p.MutableOptSub(), 1);
-            InitProto(*p.AddRepSub(), 1);
-            InitProto(*p.AddRepSub(), 1);
-        }
-    }
-
+        p.SetOptInt(1); 
+        p.AddRepInt(2); 
+        p.AddRepInt(3); 
+ 
+        p.SetOptStr("123"); 
+        p.AddRepStr("*"); 
+        p.AddRepStr("abcdef"); 
+        p.AddRepStr("1234"); 
+ 
+        if (level == 0) { 
+            InitProto(*p.MutableOptSub(), 1); 
+            InitProto(*p.AddRepSub(), 1); 
+            InitProto(*p.AddRepSub(), 1); 
+        } 
+    } 
+ 
     static bool IncreaseInts(Message & msg, const FieldDescriptor* fd) {
-        TMutableField f(msg, fd);
-        if (f.IsInstance<ui32>()) {
-            for (size_t i = 0; i < f.Size(); ++i)
+        TMutableField f(msg, fd); 
+        if (f.IsInstance<ui32>()) { 
+            for (size_t i = 0; i < f.Size(); ++i) 
                 f.Set(f.Get<ui64>(i) + 1, i); // ui64 should be ok!
-        }
-        return true;
-    }
-
+        } 
+        return true; 
+    } 
+ 
     static bool RepeatString1(Message & msg, const FieldDescriptor* fd) {
-        TMutableField f(msg, fd);
-        if (f.IsString()) {
-            for (size_t i = 0; i < f.Size(); ++i)
+        TMutableField f(msg, fd); 
+        if (f.IsString()) { 
+            for (size_t i = 0; i < f.Size(); ++i) 
                 if (f.Get<TString>(i).StartsWith('1'))
                     f.Set(f.Get<TString>(i) + f.Get<TString>(i), i);
-        }
-        return true;
-    }
-
+        } 
+        return true; 
+    } 
+ 
     static bool ClearXXX(Message & msg, const FieldDescriptor* fd) {
-        const FieldOptions& opt = fd->options();
-        if (opt.HasExtension(NProtobufUtilUt::XXX) && opt.GetExtension(NProtobufUtilUt::XXX))
-            TMutableField(msg, fd).Clear();
-
-        return true;
-    }
-
+        const FieldOptions& opt = fd->options(); 
+        if (opt.HasExtension(NProtobufUtilUt::XXX) && opt.GetExtension(NProtobufUtilUt::XXX)) 
+            TMutableField(msg, fd).Clear(); 
+ 
+        return true; 
+    } 
+ 
     struct TestStruct {
         bool Ok = false;
         
@@ -62,67 +62,67 @@ Y_UNIT_TEST_SUITE(ProtobufWalk) {
     };
 
     Y_UNIT_TEST(TestWalkRefl) {
-        NProtobufUtilUt::TWalkTest p;
-        InitProto(p);
-
-        {
-            UNIT_ASSERT_EQUAL(p.GetOptInt(), 1);
-            UNIT_ASSERT_EQUAL(p.RepIntSize(), 2);
-            UNIT_ASSERT_EQUAL(p.GetRepInt(0), 2);
-            UNIT_ASSERT_EQUAL(p.GetRepInt(1), 3);
-
-            WalkReflection(p, IncreaseInts);
-
-            UNIT_ASSERT_EQUAL(p.GetOptInt(), 2);
-            UNIT_ASSERT_EQUAL(p.RepIntSize(), 2);
-            UNIT_ASSERT_EQUAL(p.GetRepInt(0), 3);
-            UNIT_ASSERT_EQUAL(p.GetRepInt(1), 4);
-
-            UNIT_ASSERT_EQUAL(p.GetOptSub().GetOptInt(), 2);
-            UNIT_ASSERT_EQUAL(p.GetOptSub().RepIntSize(), 2);
-            UNIT_ASSERT_EQUAL(p.GetOptSub().GetRepInt(0), 3);
-            UNIT_ASSERT_EQUAL(p.GetOptSub().GetRepInt(1), 4);
-
-            UNIT_ASSERT_EQUAL(p.RepSubSize(), 2);
-            UNIT_ASSERT_EQUAL(p.GetRepSub(1).GetOptInt(), 2);
-            UNIT_ASSERT_EQUAL(p.GetRepSub(1).RepIntSize(), 2);
-            UNIT_ASSERT_EQUAL(p.GetRepSub(1).GetRepInt(0), 3);
-            UNIT_ASSERT_EQUAL(p.GetRepSub(1).GetRepInt(1), 4);
-        }
-        {
-            UNIT_ASSERT_EQUAL(p.GetOptStr(), "123");
-            UNIT_ASSERT_EQUAL(p.GetRepStr(2), "1234");
-
-            WalkReflection(p, RepeatString1);
-
-            UNIT_ASSERT_EQUAL(p.GetOptStr(), "123123");
-            UNIT_ASSERT_EQUAL(p.RepStrSize(), 3);
-            UNIT_ASSERT_EQUAL(p.GetRepStr(0), "*");
-            UNIT_ASSERT_EQUAL(p.GetRepStr(1), "abcdef");
-            UNIT_ASSERT_EQUAL(p.GetRepStr(2), "12341234");
-
-            UNIT_ASSERT_EQUAL(p.RepSubSize(), 2);
-            UNIT_ASSERT_EQUAL(p.GetRepSub(0).GetOptStr(), "123123");
-            UNIT_ASSERT_EQUAL(p.GetRepSub(0).RepStrSize(), 3);
-            UNIT_ASSERT_EQUAL(p.GetRepSub(0).GetRepStr(0), "*");
-            UNIT_ASSERT_EQUAL(p.GetRepSub(0).GetRepStr(1), "abcdef");
-            UNIT_ASSERT_EQUAL(p.GetRepSub(0).GetRepStr(2), "12341234");
-        }
-        {
-            UNIT_ASSERT(p.HasOptInt());
-            UNIT_ASSERT(p.RepStrSize() == 3);
-            UNIT_ASSERT(p.HasOptSub());
-
-            WalkReflection(p, ClearXXX);
-
-            UNIT_ASSERT(!p.HasOptInt());
-            UNIT_ASSERT(p.RepIntSize() == 2);
-            UNIT_ASSERT(p.HasOptStr());
-            UNIT_ASSERT(p.RepStrSize() == 0);
-            UNIT_ASSERT(!p.HasOptSub());
-            UNIT_ASSERT(p.RepSubSize() == 2);
-        }
-    }
+        NProtobufUtilUt::TWalkTest p; 
+        InitProto(p); 
+ 
+        { 
+            UNIT_ASSERT_EQUAL(p.GetOptInt(), 1); 
+            UNIT_ASSERT_EQUAL(p.RepIntSize(), 2); 
+            UNIT_ASSERT_EQUAL(p.GetRepInt(0), 2); 
+            UNIT_ASSERT_EQUAL(p.GetRepInt(1), 3); 
+ 
+            WalkReflection(p, IncreaseInts); 
+ 
+            UNIT_ASSERT_EQUAL(p.GetOptInt(), 2); 
+            UNIT_ASSERT_EQUAL(p.RepIntSize(), 2); 
+            UNIT_ASSERT_EQUAL(p.GetRepInt(0), 3); 
+            UNIT_ASSERT_EQUAL(p.GetRepInt(1), 4); 
+ 
+            UNIT_ASSERT_EQUAL(p.GetOptSub().GetOptInt(), 2); 
+            UNIT_ASSERT_EQUAL(p.GetOptSub().RepIntSize(), 2); 
+            UNIT_ASSERT_EQUAL(p.GetOptSub().GetRepInt(0), 3); 
+            UNIT_ASSERT_EQUAL(p.GetOptSub().GetRepInt(1), 4); 
+ 
+            UNIT_ASSERT_EQUAL(p.RepSubSize(), 2); 
+            UNIT_ASSERT_EQUAL(p.GetRepSub(1).GetOptInt(), 2); 
+            UNIT_ASSERT_EQUAL(p.GetRepSub(1).RepIntSize(), 2); 
+            UNIT_ASSERT_EQUAL(p.GetRepSub(1).GetRepInt(0), 3); 
+            UNIT_ASSERT_EQUAL(p.GetRepSub(1).GetRepInt(1), 4); 
+        } 
+        { 
+            UNIT_ASSERT_EQUAL(p.GetOptStr(), "123"); 
+            UNIT_ASSERT_EQUAL(p.GetRepStr(2), "1234"); 
+ 
+            WalkReflection(p, RepeatString1); 
+ 
+            UNIT_ASSERT_EQUAL(p.GetOptStr(), "123123"); 
+            UNIT_ASSERT_EQUAL(p.RepStrSize(), 3); 
+            UNIT_ASSERT_EQUAL(p.GetRepStr(0), "*"); 
+            UNIT_ASSERT_EQUAL(p.GetRepStr(1), "abcdef"); 
+            UNIT_ASSERT_EQUAL(p.GetRepStr(2), "12341234"); 
+ 
+            UNIT_ASSERT_EQUAL(p.RepSubSize(), 2); 
+            UNIT_ASSERT_EQUAL(p.GetRepSub(0).GetOptStr(), "123123"); 
+            UNIT_ASSERT_EQUAL(p.GetRepSub(0).RepStrSize(), 3); 
+            UNIT_ASSERT_EQUAL(p.GetRepSub(0).GetRepStr(0), "*"); 
+            UNIT_ASSERT_EQUAL(p.GetRepSub(0).GetRepStr(1), "abcdef"); 
+            UNIT_ASSERT_EQUAL(p.GetRepSub(0).GetRepStr(2), "12341234"); 
+        } 
+        { 
+            UNIT_ASSERT(p.HasOptInt()); 
+            UNIT_ASSERT(p.RepStrSize() == 3); 
+            UNIT_ASSERT(p.HasOptSub()); 
+ 
+            WalkReflection(p, ClearXXX); 
+ 
+            UNIT_ASSERT(!p.HasOptInt()); 
+            UNIT_ASSERT(p.RepIntSize() == 2); 
+            UNIT_ASSERT(p.HasOptStr()); 
+            UNIT_ASSERT(p.RepStrSize() == 0); 
+            UNIT_ASSERT(!p.HasOptSub()); 
+            UNIT_ASSERT(p.RepSubSize() == 2); 
+        } 
+    } 
 
     Y_UNIT_TEST(TestMutableCallable) {
         TestStruct testStruct;
@@ -155,4 +155,4 @@ Y_UNIT_TEST_SUITE(ProtobufWalk) {
         
         UNIT_ASSERT_STRINGS_EQUAL(printedSchema, schema);
     }
-}
+} 
diff --git a/library/cpp/protobuf/util/ya.make b/library/cpp/protobuf/util/ya.make
index b62028af58..6908416823 100644
--- a/library/cpp/protobuf/util/ya.make
+++ b/library/cpp/protobuf/util/ya.make
@@ -1,7 +1,7 @@
 LIBRARY()
 
-OWNER(mowgli)
-
+OWNER(mowgli) 
+ 
 PEERDIR(
     contrib/libs/protobuf
     library/cpp/binsaver
@@ -12,7 +12,7 @@ PEERDIR(
 SRCS(
     is_equal.cpp
     iterators.h
-    merge.cpp
+    merge.cpp 
     path.cpp
     pb_io.cpp
     pb_utils.h
diff --git a/library/cpp/streams/lz/lz.cpp b/library/cpp/streams/lz/lz.cpp
index b65bb3ed96..bb6ca0e759 100644
--- a/library/cpp/streams/lz/lz.cpp
+++ b/library/cpp/streams/lz/lz.cpp
@@ -27,8 +27,8 @@ struct TCommonData {
     static const size_t overhead = sizeof(ui16) + sizeof(ui8);
 };
 
-const size_t SIGNATURE_SIZE = 4;
-
+const size_t SIGNATURE_SIZE = 4; 
+ 
 template <class TCompressor, class TBase>
 class TCompressorBase: public TAdditionalStorage<TCompressorBase<TCompressor, TBase>>, public TCompressor, public TCommonData {
 public:
@@ -148,35 +148,35 @@ static inline T GLoad(IInputStream* input) {
     return LittleToHost(t);
 }
 
-class TDecompressSignature {
+class TDecompressSignature { 
 public:
     inline TDecompressSignature(IInputStream* input) {
         if (input->Load(Buffer_, SIGNATURE_SIZE) != SIGNATURE_SIZE) {
             ythrow TDecompressorError() << "can not load stream signature";
-        }
+        } 
     }
-
+ 
     template <class TDecompressor>
     inline bool Check() const {
         static_assert(sizeof(TDecompressor::signature) - 1 == SIGNATURE_SIZE, "expect sizeof(TDecompressor::signature) - 1 == SIGNATURE_SIZE");
         return memcmp(TDecompressor::signature, Buffer_, SIGNATURE_SIZE) == 0;
     }
-
+ 
 private:
     char Buffer_[SIGNATURE_SIZE];
-};
-
-template <class TDecompressor>
+}; 
+ 
+template <class TDecompressor> 
 static inline IInputStream* ConsumeSignature(IInputStream* input) {
-    TDecompressSignature sign(input);
-    if (!sign.Check<TDecompressor>()) {
-        ythrow TDecompressorError() << "incorrect signature";
-    }
-    return input;
-}
-
-template <class TDecompressor>
-class TDecompressorBaseImpl: public TDecompressor, public TCommonData {
+    TDecompressSignature sign(input); 
+    if (!sign.Check<TDecompressor>()) { 
+        ythrow TDecompressorError() << "incorrect signature"; 
+    } 
+    return input; 
+} 
+ 
+template <class TDecompressor> 
+class TDecompressorBaseImpl: public TDecompressor, public TCommonData { 
 public:
     static inline ui32 CheckVer(ui32 v) {
         if (v != 1) {
@@ -276,18 +276,18 @@ protected:
     char* Out_;
 };
 
-template <class TDecompressor, class TBase>
-class TDecompressorBase: public TDecompressorBaseImpl<TDecompressor> {
+template <class TDecompressor, class TBase> 
+class TDecompressorBase: public TDecompressorBaseImpl<TDecompressor> { 
 public:
     inline TDecompressorBase(IInputStream* slave)
         : TDecompressorBaseImpl<TDecompressor>(ConsumeSignature<TDecompressor>(slave))
     {
     }
-
+ 
     inline ~TDecompressorBase() {
     }
-};
-
+}; 
+ 
 #define DEF_COMPRESSOR_COMMON(rname, name)                              \
     rname::~rname() {                                                   \
         try {                                                           \
@@ -617,7 +617,7 @@ TLzqCompress::TLzqCompress(IOutputStream* slave, ui16 blockSize, EVersion ver, u
 
 DEF_COMPRESSOR_COMMON(TLzqCompress, TQuickLZCompress)
 DEF_DECOMPRESSOR(TLzqDecompress, TQuickLZDecompress)
-
+ 
 namespace {
     template <class T>
     struct TInputHolder {
@@ -640,58 +640,58 @@ namespace {
     // Decompressing input streams without signature verification
     template <class TInput, class TDecompressor>
     class TLzDecompressInput: public TInputHolder<TInput>, public IInputStream {
-    public:
+    public: 
         inline TLzDecompressInput(TInput in)
             : Impl_(this->Set(in))
-        {
-        }
-
-    private:
+        { 
+        } 
+ 
+    private: 
         size_t DoRead(void* buf, size_t len) override {
-            return Impl_.Read(buf, len);
-        }
-
-    private:
-        TDecompressorBaseImpl<TDecompressor> Impl_;
+            return Impl_.Read(buf, len); 
+        } 
+ 
+    private: 
+        TDecompressorBaseImpl<TDecompressor> Impl_; 
     };
 }
-
+ 
 template <class T>
 static TAutoPtr<IInputStream> TryOpenLzDecompressorX(const TDecompressSignature& s, T input) {
-    if (s.Check<TLZ4>())
+    if (s.Check<TLZ4>()) 
         return new TLzDecompressInput<T, TLZ4>(input);
-
-    if (s.Check<TSnappy>())
+ 
+    if (s.Check<TSnappy>()) 
         return new TLzDecompressInput<T, TSnappy>(input);
-
-    if (s.Check<TMiniLzo>())
+ 
+    if (s.Check<TMiniLzo>()) 
         return new TLzDecompressInput<T, TMiniLzoDecompressor>(input);
-
-    if (s.Check<TFastLZ>())
+ 
+    if (s.Check<TFastLZ>()) 
         return new TLzDecompressInput<T, TFastLZ>(input);
-
-    if (s.Check<TQuickLZDecompress>())
+ 
+    if (s.Check<TQuickLZDecompress>()) 
         return new TLzDecompressInput<T, TQuickLZDecompress>(input);
-
+ 
     return nullptr;
-}
-
+} 
+ 
 template <class T>
 static inline TAutoPtr<IInputStream> TryOpenLzDecompressorImpl(const TStringBuf& signature, T input) {
-    if (signature.size() == SIGNATURE_SIZE) {
+    if (signature.size() == SIGNATURE_SIZE) { 
         TMemoryInput mem(signature.data(), signature.size());
-        TDecompressSignature s(&mem);
+        TDecompressSignature s(&mem); 
 
         return TryOpenLzDecompressorX(s, input);
-    }
-
+    } 
+ 
     return nullptr;
-}
-
+} 
+ 
 template <class T>
 static inline TAutoPtr<IInputStream> TryOpenLzDecompressorImpl(T input) {
     TDecompressSignature s(&*input);
-
+ 
     return TryOpenLzDecompressorX(s, input);
 }
 
@@ -700,11 +700,11 @@ static inline TAutoPtr<IInputStream> OpenLzDecompressorImpl(T input) {
     TAutoPtr<IInputStream> ret = TryOpenLzDecompressorImpl(input);
 
     if (!ret) {
-        ythrow TDecompressorError() << "Unknown compression format";
+        ythrow TDecompressorError() << "Unknown compression format"; 
     }
-
-    return ret;
-}
+ 
+    return ret; 
+} 
 
 TAutoPtr<IInputStream> OpenLzDecompressor(IInputStream* input) {
     return OpenLzDecompressorImpl(input);
diff --git a/library/cpp/streams/lz/lz.h b/library/cpp/streams/lz/lz.h
index 3a2eaad88b..4cbd752421 100644
--- a/library/cpp/streams/lz/lz.h
+++ b/library/cpp/streams/lz/lz.h
@@ -222,7 +222,7 @@ private:
 };
 
 /** @} */
-
+ 
 /**
  * Reads a compression signature from the provided input stream and returns a
  * corresponding decompressing stream.
diff --git a/library/cpp/streams/lz/lz_ut.cpp b/library/cpp/streams/lz/lz_ut.cpp
index 6876f070fc..f2d91e2299 100644
--- a/library/cpp/streams/lz/lz_ut.cpp
+++ b/library/cpp/streams/lz/lz_ut.cpp
@@ -166,28 +166,28 @@ public:
         : Slave_(OpenLzDecompressor(input).Release())
     {
     }
-
+ 
 private:
     size_t DoRead(void* buf, size_t len) override {
         return Slave_->Read(buf, len);
     }
-
+ 
 private:
     THolder<IInputStream> Slave_;
-};
-
-template <class C>
-static inline void TestMixedDecompress() {
-    TestCompress<C>();
-    TestDecompress<TMixedDecompress>();
-}
-
-template <class D, class C>
-static inline void TestDecompressError() {
-    TestCompress<C>();
-    UNIT_ASSERT_EXCEPTION(TestDecompress<D>(), TDecompressorError);
-}
-
+}; 
+ 
+template <class C> 
+static inline void TestMixedDecompress() { 
+    TestCompress<C>(); 
+    TestDecompress<TMixedDecompress>(); 
+} 
+ 
+template <class D, class C> 
+static inline void TestDecompressError() { 
+    TestCompress<C>(); 
+    UNIT_ASSERT_EXCEPTION(TestDecompress<D>(), TDecompressorError); 
+} 
+ 
 Y_UNIT_TEST_SUITE(TLzTest) {
     Y_UNIT_TEST(TestLzo) {
         TestCompress<TLzoCompress>();
@@ -243,23 +243,23 @@ Y_UNIT_TEST_SUITE(TLzTest) {
         TestCompress<TSnappyCompress>();
         TestDecompress<TSnappyDecompress>();
     }
-
+ 
     Y_UNIT_TEST(TestGeneric) {
-        TestMixedDecompress<TLzoCompress>();
-        TestMixedDecompress<TLzfCompress>();
-        TestMixedDecompress<TLzqCompress>();
-        TestMixedDecompress<TLz4Compress>();
-        TestMixedDecompress<TSnappyCompress>();
-    }
-
+        TestMixedDecompress<TLzoCompress>(); 
+        TestMixedDecompress<TLzfCompress>(); 
+        TestMixedDecompress<TLzqCompress>(); 
+        TestMixedDecompress<TLz4Compress>(); 
+        TestMixedDecompress<TSnappyCompress>(); 
+    } 
+ 
     Y_UNIT_TEST(TestDecompressorError) {
-        TestDecompressError<TLzoDecompress, TLzfCompress>();
-        TestDecompressError<TLzfDecompress, TLzqCompress>();
-        TestDecompressError<TLzqDecompress, TLz4Compress>();
-        TestDecompressError<TLz4Decompress, TSnappyCompress>();
-        TestDecompressError<TSnappyDecompress, TBufferedOutput>();
-        TestDecompressError<TMixedDecompress, TBufferedOutput>();
-    }
+        TestDecompressError<TLzoDecompress, TLzfCompress>(); 
+        TestDecompressError<TLzfDecompress, TLzqCompress>(); 
+        TestDecompressError<TLzqDecompress, TLz4Compress>(); 
+        TestDecompressError<TLz4Decompress, TSnappyCompress>(); 
+        TestDecompressError<TSnappyDecompress, TBufferedOutput>(); 
+        TestDecompressError<TMixedDecompress, TBufferedOutput>(); 
+    } 
 
     Y_UNIT_TEST(TestFactory) {
         TStringStream ss;
diff --git a/library/cpp/string_utils/base64/base64.h b/library/cpp/string_utils/base64/base64.h
index f778a6425a..cb2d201681 100644
--- a/library/cpp/string_utils/base64/base64.h
+++ b/library/cpp/string_utils/base64/base64.h
@@ -28,14 +28,14 @@ inline TStringBuf Base64Decode(const TStringBuf src, void* dst) {
 }
 
 inline void Base64Decode(const TStringBuf src, TString& dst) {
-    dst.ReserveAndResize(Base64DecodeBufSize(src.size()));
-    dst.resize(Base64Decode(src, dst.begin()).size());
-}
-
+    dst.ReserveAndResize(Base64DecodeBufSize(src.size())); 
+    dst.resize(Base64Decode(src, dst.begin()).size()); 
+} 
+ 
 //WARNING: can process not whole input silently, use Base64StrictDecode instead of this function
 inline TString Base64Decode(const TStringBuf s) {
     TString ret;
-    Base64Decode(s, ret);
+    Base64Decode(s, ret); 
     return ret;
 }
 
@@ -108,23 +108,23 @@ inline TStringBuf Base64EncodeUrl(const TStringBuf src, void* tmp) {
 }
 
 inline void Base64Encode(const TStringBuf src, TString& dst) {
-    dst.ReserveAndResize(Base64EncodeBufSize(src.size()));
-    dst.resize(Base64Encode(src, dst.begin()).size());
-}
-
+    dst.ReserveAndResize(Base64EncodeBufSize(src.size())); 
+    dst.resize(Base64Encode(src, dst.begin()).size()); 
+} 
+ 
 inline void Base64EncodeUrl(const TStringBuf src, TString& dst) {
-    dst.ReserveAndResize(Base64EncodeBufSize(src.size()));
-    dst.resize(Base64EncodeUrl(src, dst.begin()).size());
-}
-
+    dst.ReserveAndResize(Base64EncodeBufSize(src.size())); 
+    dst.resize(Base64EncodeUrl(src, dst.begin()).size()); 
+} 
+ 
 inline TString Base64Encode(const TStringBuf s) {
     TString ret;
-    Base64Encode(s, ret);
+    Base64Encode(s, ret); 
     return ret;
 }
 
 inline TString Base64EncodeUrl(const TStringBuf s) {
     TString ret;
-    Base64EncodeUrl(s, ret);
+    Base64EncodeUrl(s, ret); 
     return ret;
 }
diff --git a/library/cpp/string_utils/base64/base64_ut.cpp b/library/cpp/string_utils/base64/base64_ut.cpp
index bcc1e65879..6a54e010a6 100644
--- a/library/cpp/string_utils/base64/base64_ut.cpp
+++ b/library/cpp/string_utils/base64/base64_ut.cpp
@@ -165,20 +165,20 @@ void Out<NB64Etalon::TImpls::EImpl>(IOutputStream& o, typename TTypeTraits<NB64E
 
 static void TestEncodeDecodeIntoString(const TString& plain, const TString& encoded, const TString& encodedUrl) {
     TString a, b;
-
-    Base64Encode(plain, a);
-    UNIT_ASSERT_VALUES_EQUAL(a, encoded);
-
-    Base64Decode(a, b);
-    UNIT_ASSERT_VALUES_EQUAL(b, plain);
-
-    Base64EncodeUrl(plain, a);
-    UNIT_ASSERT_VALUES_EQUAL(a, encodedUrl);
-
-    Base64Decode(a, b);
-    UNIT_ASSERT_VALUES_EQUAL(b, plain);
-}
-
+ 
+    Base64Encode(plain, a); 
+    UNIT_ASSERT_VALUES_EQUAL(a, encoded); 
+ 
+    Base64Decode(a, b); 
+    UNIT_ASSERT_VALUES_EQUAL(b, plain); 
+ 
+    Base64EncodeUrl(plain, a); 
+    UNIT_ASSERT_VALUES_EQUAL(a, encodedUrl); 
+ 
+    Base64Decode(a, b); 
+    UNIT_ASSERT_VALUES_EQUAL(b, plain); 
+} 
+ 
 static void TestEncodeStrictDecodeIntoString(const TString& plain, const TString& encoded, const TString& encodedUrl) {
     TString a, b;
 
@@ -204,11 +204,11 @@ Y_UNIT_TEST_SUITE(TBase64) {
     }
 
     Y_UNIT_TEST(TestIntoString) {
-        {
+        { 
             TString str;
-            for (size_t i = 0; i < 256; ++i)
-                str += char(i);
-
+            for (size_t i = 0; i < 256; ++i) 
+                str += char(i); 
+ 
             const TString base64 =
                 "AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxwdHh8gISIjJCUmJy"
                 "gpKissLS4vMDEyMzQ1Njc4OTo7PD0+P0BBQkNERUZHSElKS0xNTk9Q"
@@ -225,22 +225,22 @@ Y_UNIT_TEST_SUITE(TBase64) {
                 "oqOkpaanqKmqq6ytrq-wsbKztLW2t7i5uru8vb6_wMHCw8TFxsfIyc"
                 "rLzM3Oz9DR0tPU1dbX2Nna29zd3t_g4eLj5OXm5-jp6uvs7e7v8PHy"
                 "8_T19vf4-fr7_P3-_w,,";
-
-            TestEncodeDecodeIntoString(str, base64, base64Url);
+ 
+            TestEncodeDecodeIntoString(str, base64, base64Url); 
             TestEncodeStrictDecodeIntoString(str, base64, base64Url);
-        }
-
-        {
+        } 
+ 
+        { 
             const TString str = "http://yandex.ru:1234/request?param=value&lll=fff#fragment";
-
+ 
             const TString base64 = "aHR0cDovL3lhbmRleC5ydToxMjM0L3JlcXVlc3Q/cGFyYW09dmFsdWUmbGxsPWZmZiNmcmFnbWVudA==";
             const TString base64Url = "aHR0cDovL3lhbmRleC5ydToxMjM0L3JlcXVlc3Q_cGFyYW09dmFsdWUmbGxsPWZmZiNmcmFnbWVudA,,";
-
-            TestEncodeDecodeIntoString(str, base64, base64Url);
+ 
+            TestEncodeDecodeIntoString(str, base64, base64Url); 
             TestEncodeStrictDecodeIntoString(str, base64, base64Url);
-        }
-    }
-
+        } 
+    } 
+ 
     Y_UNIT_TEST(TestDecode) {
         UNIT_ASSERT_EXCEPTION(Base64Decode("a"), yexception);
         UNIT_ASSERT_EXCEPTION(Base64StrictDecode("a"), yexception);
diff --git a/library/cpp/string_utils/url/url.cpp b/library/cpp/string_utils/url/url.cpp
index 85f4ac5d69..0744ae5640 100644
--- a/library/cpp/string_utils/url/url.cpp
+++ b/library/cpp/string_utils/url/url.cpp
@@ -264,17 +264,17 @@ TStringBuf GetDomain(const TStringBuf host) noexcept {
 }
 
 TStringBuf GetParentDomain(const TStringBuf host, size_t level) noexcept {
-    size_t pos = host.size();
-    for (size_t i = 0; i < level; ++i) {
-        pos = host.rfind('.', pos);
+    size_t pos = host.size(); 
+    for (size_t i = 0; i < level; ++i) { 
+        pos = host.rfind('.', pos); 
         if (pos == TString::npos)
-            return host;
-    }
-    return host.SubStr(pos + 1);
-}
-
+            return host; 
+    } 
+    return host.SubStr(pos + 1); 
+} 
+ 
 TStringBuf GetZone(const TStringBuf host) noexcept {
-    return GetParentDomain(host, 1);
+    return GetParentDomain(host, 1); 
 }
 
 TStringBuf CutWWWPrefix(const TStringBuf url) noexcept {
diff --git a/library/cpp/string_utils/url/url_ut.cpp b/library/cpp/string_utils/url/url_ut.cpp
index 1588013893..829fbe217f 100644
--- a/library/cpp/string_utils/url/url_ut.cpp
+++ b/library/cpp/string_utils/url/url_ut.cpp
@@ -49,19 +49,19 @@ Y_UNIT_TEST_SUITE(TUtilUrlTest) {
     }
 
     Y_UNIT_TEST(TestGetParentDomain) {
-        UNIT_ASSERT_VALUES_EQUAL("", GetParentDomain("www.ya.ru", 0));
-        UNIT_ASSERT_VALUES_EQUAL("ru", GetParentDomain("www.ya.ru", 1));
-        UNIT_ASSERT_VALUES_EQUAL("ya.ru", GetParentDomain("www.ya.ru", 2));
-        UNIT_ASSERT_VALUES_EQUAL("www.ya.ru", GetParentDomain("www.ya.ru", 3));
-        UNIT_ASSERT_VALUES_EQUAL("www.ya.ru", GetParentDomain("www.ya.ru", 4));
-        UNIT_ASSERT_VALUES_EQUAL("com", GetParentDomain("ya.com", 1));
-        UNIT_ASSERT_VALUES_EQUAL("ya.com", GetParentDomain("ya.com", 2));
-        UNIT_ASSERT_VALUES_EQUAL("RU", GetParentDomain("RU", 1));
-        UNIT_ASSERT_VALUES_EQUAL("RU", GetParentDomain("RU", 2));
-        UNIT_ASSERT_VALUES_EQUAL("", GetParentDomain("", 0));
-        UNIT_ASSERT_VALUES_EQUAL("", GetParentDomain("", 1));
-    }
-
+        UNIT_ASSERT_VALUES_EQUAL("", GetParentDomain("www.ya.ru", 0)); 
+        UNIT_ASSERT_VALUES_EQUAL("ru", GetParentDomain("www.ya.ru", 1)); 
+        UNIT_ASSERT_VALUES_EQUAL("ya.ru", GetParentDomain("www.ya.ru", 2)); 
+        UNIT_ASSERT_VALUES_EQUAL("www.ya.ru", GetParentDomain("www.ya.ru", 3)); 
+        UNIT_ASSERT_VALUES_EQUAL("www.ya.ru", GetParentDomain("www.ya.ru", 4)); 
+        UNIT_ASSERT_VALUES_EQUAL("com", GetParentDomain("ya.com", 1)); 
+        UNIT_ASSERT_VALUES_EQUAL("ya.com", GetParentDomain("ya.com", 2)); 
+        UNIT_ASSERT_VALUES_EQUAL("RU", GetParentDomain("RU", 1)); 
+        UNIT_ASSERT_VALUES_EQUAL("RU", GetParentDomain("RU", 2)); 
+        UNIT_ASSERT_VALUES_EQUAL("", GetParentDomain("", 0)); 
+        UNIT_ASSERT_VALUES_EQUAL("", GetParentDomain("", 1)); 
+    } 
+ 
     Y_UNIT_TEST(TestGetZone) {
         UNIT_ASSERT_VALUES_EQUAL("ru", GetZone("www.ya.ru"));
         UNIT_ASSERT_VALUES_EQUAL("com", GetZone("ya.com"));
diff --git a/library/cpp/tld/tld.cpp b/library/cpp/tld/tld.cpp
index e31f3f0322..d67291676e 100644
--- a/library/cpp/tld/tld.cpp
+++ b/library/cpp/tld/tld.cpp
@@ -5,7 +5,7 @@
 #include <util/generic/hash_set.h>
 #include <util/generic/singleton.h>
 
-namespace NTld {
+namespace NTld { 
     namespace {
 #include <library/cpp/tld/tld.inc>
 
@@ -18,18 +18,18 @@ namespace NTld {
                 }
             }
         };
-
+ 
         struct TVeryGoodTld: public TCiHash {
             TVeryGoodTld() {
                 auto domains = {
                     "am", "az", "biz", "by", "com", "cz", "de", "ec", "fr", "ge", "gov",
                     "gr", "il", "info", "kg", "kz", "mobi", "net", "nu", "org", "lt", "lv",
                     "md", "ru", "su", "tr", "ua", "uk", "uz", "ws", "xn--p1ai", "рф"};
-
+ 
                 for (auto d : domains) {
                     insert(d);
                 }
-            }
+            } 
         };
     }
 
diff --git a/library/cpp/tld/tld.h b/library/cpp/tld/tld.h
index 9e241de090..7c2061717a 100644
--- a/library/cpp/tld/tld.h
+++ b/library/cpp/tld/tld.h
@@ -17,12 +17,12 @@ namespace NTld {
     inline bool InTld(const TStringBuf& host) {
         return IsTld(FindTld(host));
     }
-
+ 
     // check if @s belongs to a "good" subset of reliable TLDs, defined in tld.cpp
     bool IsVeryGoodTld(const TStringBuf& tld);
-
+ 
     inline bool InVeryGoodTld(const TStringBuf& host) {
         return IsVeryGoodTld(FindTld(host));
     }
-
-}
+ 
+} 
diff --git a/library/cpp/tld/tld_ut.cpp b/library/cpp/tld/tld_ut.cpp
index 733200f2b5..61a6779673 100644
--- a/library/cpp/tld/tld_ut.cpp
+++ b/library/cpp/tld/tld_ut.cpp
@@ -8,20 +8,20 @@ using namespace NTld;
 
 Y_UNIT_TEST_SUITE(TTldTest) {
     Y_UNIT_TEST(TestFindTld) {
-        UNIT_ASSERT(FindTld("yandex.ru") == "ru");
-        UNIT_ASSERT(FindTld("YandeX.Ru") == "Ru");
-        UNIT_ASSERT(FindTld("yandex.com.tr") == "tr");
-        UNIT_ASSERT(FindTld("com.tr") == "tr");
-        UNIT_ASSERT(FindTld("abc.def.ghi") == "ghi");
-        UNIT_ASSERT(FindTld("abc.def.aaaaaaaaaa") == "aaaaaaaaaa");
-        UNIT_ASSERT(FindTld("a.b.c.d.e.f.g") == "g");
-
-        UNIT_ASSERT(FindTld(".diff") == "diff");
-        UNIT_ASSERT(FindTld(".") == "");
-        UNIT_ASSERT(FindTld("ru") == "");
-        UNIT_ASSERT(FindTld("") == "");
-    }
-
+        UNIT_ASSERT(FindTld("yandex.ru") == "ru"); 
+        UNIT_ASSERT(FindTld("YandeX.Ru") == "Ru"); 
+        UNIT_ASSERT(FindTld("yandex.com.tr") == "tr"); 
+        UNIT_ASSERT(FindTld("com.tr") == "tr"); 
+        UNIT_ASSERT(FindTld("abc.def.ghi") == "ghi"); 
+        UNIT_ASSERT(FindTld("abc.def.aaaaaaaaaa") == "aaaaaaaaaa"); 
+        UNIT_ASSERT(FindTld("a.b.c.d.e.f.g") == "g"); 
+ 
+        UNIT_ASSERT(FindTld(".diff") == "diff"); 
+        UNIT_ASSERT(FindTld(".") == ""); 
+        UNIT_ASSERT(FindTld("ru") == ""); 
+        UNIT_ASSERT(FindTld("") == ""); 
+    } 
+ 
     Y_UNIT_TEST(TestTLDs) {
         UNIT_ASSERT(IsTld("ru"));
         UNIT_ASSERT(IsTld("Ru"));
@@ -36,24 +36,24 @@ Y_UNIT_TEST_SUITE(TTldTest) {
         UNIT_ASSERT(!InTld("ru."));
         UNIT_ASSERT(!InTld("ru.xn"));
     }
-
+ 
     Y_UNIT_TEST(TestVeryGoodTlds) {
-        UNIT_ASSERT(IsVeryGoodTld("ru"));
-        UNIT_ASSERT(IsVeryGoodTld("Ru"));
-        UNIT_ASSERT(!IsVeryGoodTld("BMW"));
-        UNIT_ASSERT(!IsVeryGoodTld("TiReS"));
-        UNIT_ASSERT(IsVeryGoodTld("рф"));
+        UNIT_ASSERT(IsVeryGoodTld("ru")); 
+        UNIT_ASSERT(IsVeryGoodTld("Ru")); 
+        UNIT_ASSERT(!IsVeryGoodTld("BMW")); 
+        UNIT_ASSERT(!IsVeryGoodTld("TiReS")); 
+        UNIT_ASSERT(IsVeryGoodTld("рф")); 
         UNIT_ASSERT(!IsVeryGoodTld("РФ"));       // note that uppercase non-ascii tlds cannot be found
         UNIT_ASSERT(IsVeryGoodTld("xn--p1ai"));  // "рф"
         UNIT_ASSERT(!IsVeryGoodTld("xn--p1ag")); // "ру"
-        UNIT_ASSERT(!IsVeryGoodTld("YaHOO"));
-        UNIT_ASSERT(!IsVeryGoodTld("xn"));
-
-        UNIT_ASSERT(InVeryGoodTld("ru.ru"));
-        UNIT_ASSERT(InVeryGoodTld("яндекс.рф"));
-        UNIT_ASSERT(InVeryGoodTld("http://xn--d1acpjx3f.xn--p1ai"));
-        UNIT_ASSERT(!InVeryGoodTld("ru"));
-        UNIT_ASSERT(!InVeryGoodTld("ru."));
-        UNIT_ASSERT(!InVeryGoodTld("ru.xn"));
-    }
+        UNIT_ASSERT(!IsVeryGoodTld("YaHOO")); 
+        UNIT_ASSERT(!IsVeryGoodTld("xn")); 
+ 
+        UNIT_ASSERT(InVeryGoodTld("ru.ru")); 
+        UNIT_ASSERT(InVeryGoodTld("яндекс.рф")); 
+        UNIT_ASSERT(InVeryGoodTld("http://xn--d1acpjx3f.xn--p1ai")); 
+        UNIT_ASSERT(!InVeryGoodTld("ru")); 
+        UNIT_ASSERT(!InVeryGoodTld("ru.")); 
+        UNIT_ASSERT(!InVeryGoodTld("ru.xn")); 
+    } 
 }
diff --git a/library/cpp/unicode/punycode/punycode.cpp b/library/cpp/unicode/punycode/punycode.cpp
index 800d1f19fe..fc13a55436 100644
--- a/library/cpp/unicode/punycode/punycode.cpp
+++ b/library/cpp/unicode/punycode/punycode.cpp
@@ -1,143 +1,143 @@
-#include "punycode.h"
-#include <contrib/libs/libidn/idna.h>
-#include <contrib/libs/libidn/punycode.h>
-#include <util/charset/wide.h>
-#include <util/generic/ptr.h>
-#include <util/generic/vector.h>
-
-#include <cstdlib>
-
-static inline void CheckPunycodeResult(int rc) {
-    if (rc != PUNYCODE_SUCCESS)
-        ythrow TPunycodeError() << punycode_strerror(static_cast<Punycode_status>(rc));
-}
-
-static inline void CheckIdnaResult(int rc) {
-    if (rc != IDNA_SUCCESS)
-        ythrow TPunycodeError() << idna_strerror(static_cast<Idna_rc>(rc));
-}
-
-// UTF-32 helpers
-
+#include "punycode.h" 
+#include <contrib/libs/libidn/idna.h> 
+#include <contrib/libs/libidn/punycode.h> 
+#include <util/charset/wide.h> 
+#include <util/generic/ptr.h> 
+#include <util/generic/vector.h> 
+ 
+#include <cstdlib> 
+ 
+static inline void CheckPunycodeResult(int rc) { 
+    if (rc != PUNYCODE_SUCCESS) 
+        ythrow TPunycodeError() << punycode_strerror(static_cast<Punycode_status>(rc)); 
+} 
+ 
+static inline void CheckIdnaResult(int rc) { 
+    if (rc != IDNA_SUCCESS) 
+        ythrow TPunycodeError() << idna_strerror(static_cast<Idna_rc>(rc)); 
+} 
+ 
+// UTF-32 helpers 
+ 
 static inline void AppendWideToUtf32(const TWtringBuf& in, TVector<ui32>& out) {
-    out.reserve(out.size() + in.size() + 1);
-
-    const wchar16* b = in.begin();
-    const wchar16* e = in.end();
-    while (b < e) {
-        out.push_back(ReadSymbolAndAdvance(b, e));
-    }
-}
-
+    out.reserve(out.size() + in.size() + 1); 
+ 
+    const wchar16* b = in.begin(); 
+    const wchar16* e = in.end(); 
+    while (b < e) { 
+        out.push_back(ReadSymbolAndAdvance(b, e)); 
+    } 
+} 
+ 
 static inline void AppendUtf32ToWide(const ui32* in, size_t len, TUtf16String& out) {
-    out.reserve(out.size() + len);
-
+    out.reserve(out.size() + len); 
+ 
     const ui32* b = in;
     const ui32* e = in + len;
-    for (; b != e; ++b) {
+    for (; b != e; ++b) { 
         WriteSymbol(wchar32(*b), out);
-    }
-}
-
+    } 
+} 
+ 
 TStringBuf WideToPunycode(const TWtringBuf& in16, TString& out) {
     TVector<ui32> in32;
-    AppendWideToUtf32(in16, in32);
-    size_t outlen = in32.size();
-
-    int rc;
-    do {
-        outlen *= 2;
-        out.ReserveAndResize(outlen);
+    AppendWideToUtf32(in16, in32); 
+    size_t outlen = in32.size(); 
+ 
+    int rc; 
+    do { 
+        outlen *= 2; 
+        out.ReserveAndResize(outlen); 
         rc = punycode_encode(in32.size(), in32.data(), nullptr, &outlen, out.begin());
-    } while (rc == PUNYCODE_BIG_OUTPUT);
-
-    CheckPunycodeResult(rc);
-
-    out.resize(outlen);
-    return out;
-}
-
+    } while (rc == PUNYCODE_BIG_OUTPUT); 
+ 
+    CheckPunycodeResult(rc); 
+ 
+    out.resize(outlen); 
+    return out; 
+} 
+ 
 TWtringBuf PunycodeToWide(const TStringBuf& in, TUtf16String& out16) {
-    size_t outlen = in.size();
+    size_t outlen = in.size(); 
     TVector<ui32> out32(outlen);
-
+ 
     int rc = punycode_decode(in.size(), in.data(), &outlen, out32.begin(), nullptr);
-    CheckPunycodeResult(rc);
-
-    AppendUtf32ToWide(out32.begin(), outlen, out16);
-    return out16;
-}
-
-namespace {
-    template <typename TChar>
-    struct TIdnaResult {
-        TChar* Data = nullptr;
-
-        ~TIdnaResult() {
-            free(Data);
-        }
-    };
-}
-
+    CheckPunycodeResult(rc); 
+ 
+    AppendUtf32ToWide(out32.begin(), outlen, out16); 
+    return out16; 
+} 
+ 
+namespace { 
+    template <typename TChar> 
+    struct TIdnaResult { 
+        TChar* Data = nullptr; 
+ 
+        ~TIdnaResult() { 
+            free(Data); 
+        } 
+    }; 
+} 
+ 
 TString HostNameToPunycode(const TWtringBuf& unicodeHost) {
     TVector<ui32> in32;
-    AppendWideToUtf32(unicodeHost, in32);
-    in32.push_back(0);
-
-    TIdnaResult<char> out;
-    int rc = idna_to_ascii_4z(in32.begin(), &out.Data, 0);
-    CheckIdnaResult(rc);
-
-    return out.Data;
-}
-
+    AppendWideToUtf32(unicodeHost, in32); 
+    in32.push_back(0); 
+ 
+    TIdnaResult<char> out; 
+    int rc = idna_to_ascii_4z(in32.begin(), &out.Data, 0); 
+    CheckIdnaResult(rc); 
+ 
+    return out.Data; 
+} 
+ 
 TUtf16String PunycodeToHostName(const TStringBuf& punycodeHost) {
-    if (!IsStringASCII(punycodeHost.begin(), punycodeHost.end()))
-        ythrow TPunycodeError() << "Non-ASCII punycode input";
-
-    size_t len = punycodeHost.size();
+    if (!IsStringASCII(punycodeHost.begin(), punycodeHost.end())) 
+        ythrow TPunycodeError() << "Non-ASCII punycode input"; 
+ 
+    size_t len = punycodeHost.size(); 
     TVector<ui32> in32(len + 1, 0);
-    for (size_t i = 0; i < len; ++i)
-        in32[i] = static_cast<ui8>(punycodeHost[i]);
-    in32[len] = 0;
-
+    for (size_t i = 0; i < len; ++i) 
+        in32[i] = static_cast<ui8>(punycodeHost[i]); 
+    in32[len] = 0; 
+ 
     TIdnaResult<ui32> out;
-    int rc = idna_to_unicode_4z4z(in32.begin(), &out.Data, 0);
-    CheckIdnaResult(rc);
-
+    int rc = idna_to_unicode_4z4z(in32.begin(), &out.Data, 0); 
+    CheckIdnaResult(rc); 
+ 
     TUtf16String decoded;
     AppendUtf32ToWide(out.Data, std::char_traits<ui32>::length(out.Data), decoded);
-    return decoded;
-}
-
+    return decoded; 
+} 
+ 
 TString ForceHostNameToPunycode(const TWtringBuf& unicodeHost) {
-    try {
-        return HostNameToPunycode(unicodeHost);
-    } catch (const TPunycodeError&) {
-        return WideToUTF8(unicodeHost);
-    }
-}
-
+    try { 
+        return HostNameToPunycode(unicodeHost); 
+    } catch (const TPunycodeError&) { 
+        return WideToUTF8(unicodeHost); 
+    } 
+} 
+ 
 TUtf16String ForcePunycodeToHostName(const TStringBuf& punycodeHost) {
-    try {
-        return PunycodeToHostName(punycodeHost);
-    } catch (const TPunycodeError&) {
-        return UTF8ToWide(punycodeHost);
-    }
-}
-
-bool CanBePunycodeHostName(const TStringBuf& host) {
-    if (!IsStringASCII(host.begin(), host.end()))
-        return false;
-
+    try { 
+        return PunycodeToHostName(punycodeHost); 
+    } catch (const TPunycodeError&) { 
+        return UTF8ToWide(punycodeHost); 
+    } 
+} 
+ 
+bool CanBePunycodeHostName(const TStringBuf& host) { 
+    if (!IsStringASCII(host.begin(), host.end())) 
+        return false; 
+ 
     static constexpr TStringBuf ACE = "xn--";
-
-    TStringBuf tail(host);
-    while (tail) {
-        const TStringBuf label = tail.NextTok('.');
+ 
+    TStringBuf tail(host); 
+    while (tail) { 
+        const TStringBuf label = tail.NextTok('.'); 
         if (label.StartsWith(ACE))
-            return true;
-    }
-
-    return false;
-}
+            return true; 
+    } 
+ 
+    return false; 
+} 
diff --git a/library/cpp/unicode/punycode/punycode.h b/library/cpp/unicode/punycode/punycode.h
index af4acc25c1..9d4517fede 100644
--- a/library/cpp/unicode/punycode/punycode.h
+++ b/library/cpp/unicode/punycode/punycode.h
@@ -1,46 +1,46 @@
-#pragma once
+#pragma once 
 
 #include <util/generic/string.h>
-#include <util/generic/strbuf.h>
-#include <util/generic/yexception.h>
-
-// Simplified arcadia wrappers for contrib/libs/libidn/
-
-// Raw strings encoder/decoder: does not prepend with ACE prefix ("xn--"),
-// does not limit input length. Throws TPunycodeError on any internal error.
-// Returned strbuf points to @out data.
+#include <util/generic/strbuf.h> 
+#include <util/generic/yexception.h> 
+ 
+// Simplified arcadia wrappers for contrib/libs/libidn/ 
+ 
+// Raw strings encoder/decoder: does not prepend with ACE prefix ("xn--"), 
+// does not limit input length. Throws TPunycodeError on any internal error. 
+// Returned strbuf points to @out data. 
 TStringBuf WideToPunycode(const TWtringBuf& in, TString& out);
 TWtringBuf PunycodeToWide(const TStringBuf& in, TUtf16String& out);
-
+ 
 inline TString WideToPunycode(const TWtringBuf& in) {
     TString out;
-    WideToPunycode(in, out);
-    return out;
-}
-
+    WideToPunycode(in, out); 
+    return out; 
+} 
+ 
 inline TUtf16String PunycodeToWide(const TStringBuf& in) {
     TUtf16String out;
-    PunycodeToWide(in, out);
-    return out;
-}
-
-// Encode a sequence of point-separated domain labels
-// into a sequence of corresponding punycode labels.
-// Labels containing non-ASCII characters are prefixed with ACE prefix ("xn--").
-// Limits maximal encoded domain label length to IDNA_LABEL_MAX_LENGTH (255 by default).
-// Throws TPunycodeError on failure.
+    PunycodeToWide(in, out); 
+    return out; 
+} 
+ 
+// Encode a sequence of point-separated domain labels 
+// into a sequence of corresponding punycode labels. 
+// Labels containing non-ASCII characters are prefixed with ACE prefix ("xn--"). 
+// Limits maximal encoded domain label length to IDNA_LABEL_MAX_LENGTH (255 by default). 
+// Throws TPunycodeError on failure. 
 TString HostNameToPunycode(const TWtringBuf& unicodeHost);
 TUtf16String PunycodeToHostName(const TStringBuf& punycodeHost);
-
-// Robust versions: on failure return original input, converted to/from UTF8
+ 
+// Robust versions: on failure return original input, converted to/from UTF8 
 TString ForceHostNameToPunycode(const TWtringBuf& unicodeHost);
 TUtf16String ForcePunycodeToHostName(const TStringBuf& punycodeHost);
-
-// True if @host looks like punycode domain label sequence,
-// containing at least one ACE-prefixed label.
-// Note that this function does not check all requied IDNA constraints
-// (max label length, empty non-root domains, etc.)
-bool CanBePunycodeHostName(const TStringBuf& host);
-
-class TPunycodeError: public yexception {
-};
+ 
+// True if @host looks like punycode domain label sequence, 
+// containing at least one ACE-prefixed label. 
+// Note that this function does not check all requied IDNA constraints 
+// (max label length, empty non-root domains, etc.) 
+bool CanBePunycodeHostName(const TStringBuf& host); 
+ 
+class TPunycodeError: public yexception { 
+}; 
diff --git a/library/cpp/unicode/punycode/punycode_ut.cpp b/library/cpp/unicode/punycode/punycode_ut.cpp
index 97271cf0d8..d8a2848d47 100644
--- a/library/cpp/unicode/punycode/punycode_ut.cpp
+++ b/library/cpp/unicode/punycode/punycode_ut.cpp
@@ -1,8 +1,8 @@
-#include "punycode.h"
-
+#include "punycode.h" 
+ 
 #include <library/cpp/testing/unittest/registar.h>
-#include <util/charset/wide.h>
-
+#include <util/charset/wide.h> 
+ 
 namespace {
         template<typename T1, typename T2>
         inline bool HasSameBuffer(const T1& s1, const T2& s2) {
@@ -16,111 +16,111 @@ Y_UNIT_TEST_SUITE(TPunycodeTest) {
         TString buf1;
         TUtf16String buf2;
         return HasSameBuffer(WideToPunycode(unicode, buf1), buf1) && buf1 == punycode && HasSameBuffer(PunycodeToWide(punycode, buf2), buf2) && buf2 == unicode && WideToPunycode(unicode) == punycode && PunycodeToWide(punycode) == unicode;
-    }
-
+    } 
+ 
     Y_UNIT_TEST(RawEncodeDecode) {
-        UNIT_ASSERT(TestRaw("", ""));
-        UNIT_ASSERT(TestRaw(" ", " -"));
-        UNIT_ASSERT(TestRaw("-", "--"));
-        UNIT_ASSERT(TestRaw("!@#$%", "!@#$%-"));
-        UNIT_ASSERT(TestRaw("xn-", "xn--"));
-        UNIT_ASSERT(TestRaw("xn--", "xn---"));
-        UNIT_ASSERT(TestRaw("abc", "abc-"));
-        UNIT_ASSERT(TestRaw("Latin123", "Latin123-"));
-
-        UNIT_ASSERT(TestRaw("München", "Mnchen-3ya"));
-        UNIT_ASSERT(TestRaw("bücher", "bcher-kva"));
-        UNIT_ASSERT(TestRaw("BüüchEr", "BchEr-kvaa"));
-
-        UNIT_ASSERT(TestRaw("президент", "d1abbgf6aiiy"));
-        UNIT_ASSERT(TestRaw("Президент", "r0a6bcbig1bsy"));
-        UNIT_ASSERT(TestRaw("ПРЕЗИДЕНТ", "g0abbgf6aiiy"));
-        UNIT_ASSERT(TestRaw("рф", "p1ai"));
-        UNIT_ASSERT(TestRaw("пример", "e1afmkfd"));
-
-        {
+        UNIT_ASSERT(TestRaw("", "")); 
+        UNIT_ASSERT(TestRaw(" ", " -")); 
+        UNIT_ASSERT(TestRaw("-", "--")); 
+        UNIT_ASSERT(TestRaw("!@#$%", "!@#$%-")); 
+        UNIT_ASSERT(TestRaw("xn-", "xn--")); 
+        UNIT_ASSERT(TestRaw("xn--", "xn---")); 
+        UNIT_ASSERT(TestRaw("abc", "abc-")); 
+        UNIT_ASSERT(TestRaw("Latin123", "Latin123-")); 
+ 
+        UNIT_ASSERT(TestRaw("München", "Mnchen-3ya")); 
+        UNIT_ASSERT(TestRaw("bücher", "bcher-kva")); 
+        UNIT_ASSERT(TestRaw("BüüchEr", "BchEr-kvaa")); 
+ 
+        UNIT_ASSERT(TestRaw("президент", "d1abbgf6aiiy")); 
+        UNIT_ASSERT(TestRaw("Президент", "r0a6bcbig1bsy")); 
+        UNIT_ASSERT(TestRaw("ПРЕЗИДЕНТ", "g0abbgf6aiiy")); 
+        UNIT_ASSERT(TestRaw("рф", "p1ai")); 
+        UNIT_ASSERT(TestRaw("пример", "e1afmkfd")); 
+ 
+        { 
             const wchar16 tmp[] = {0x82, 0x81, 0x80, 0};
             UNIT_ASSERT(PunycodeToWide("abc") == tmp); // "abc" is still valid punycode
-        }
-
-        UNIT_ASSERT_EXCEPTION(PunycodeToWide("     "), TPunycodeError);
-        UNIT_ASSERT_EXCEPTION(PunycodeToWide("абвгд"), TPunycodeError);
+        } 
+ 
+        UNIT_ASSERT_EXCEPTION(PunycodeToWide("     "), TPunycodeError); 
+        UNIT_ASSERT_EXCEPTION(PunycodeToWide("абвгд"), TPunycodeError); 
         UNIT_ASSERT_EXCEPTION(PunycodeToWide("-"), TPunycodeError);
-
-        {
+ 
+        { 
             TString longIn;
-            for (size_t i = 0; i < 1024; ++i)
-                longIn += "Qй";
-
+            for (size_t i = 0; i < 1024; ++i) 
+                longIn += "Qй"; 
+ 
             TString longOut = "QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ-lo11fbabbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb";
-            UNIT_ASSERT(TestRaw(longIn, longOut));
-        }
-    }
-
+            UNIT_ASSERT(TestRaw(longIn, longOut)); 
+        } 
+    } 
+ 
     static bool TestHostName(const TString& utf8, const TString& punycode, bool canBePunycode = false) {
         TUtf16String unicode = UTF8ToWide(utf8);
         TString buf1;
         TUtf16String buf2;
-        //Cerr << "Testing " << utf8 << Endl;
+        //Cerr << "Testing " << utf8 << Endl; 
         return HostNameToPunycode(unicode) == punycode && HostNameToPunycode(UTF8ToWide(punycode)) == punycode // repeated encoding should give same result
                && PunycodeToHostName(punycode) == unicode && CanBePunycodeHostName(punycode) == canBePunycode;
-    }
-
+    } 
+ 
     static bool TestForced(const TString& bad) {
         return ForceHostNameToPunycode(UTF8ToWide(bad)) == bad && ForcePunycodeToHostName(bad) == UTF8ToWide(bad);
-    }
-
+    } 
+ 
     Y_UNIT_TEST(HostNameEncodeDecode) {
-        UNIT_ASSERT(TestHostName("президент.рф", "xn--d1abbgf6aiiy.xn--p1ai", true));
+        UNIT_ASSERT(TestHostName("президент.рф", "xn--d1abbgf6aiiy.xn--p1ai", true)); 
         UNIT_ASSERT(TestHostName("яндекс.ru", "xn--d1acpjx3f.ru", true));
         UNIT_ASSERT(TestHostName("пример", "xn--e1afmkfd", true));
         UNIT_ASSERT(TestHostName("ascii.test", "ascii.test"));
-
-        UNIT_ASSERT(TestHostName("", ""));
-        UNIT_ASSERT(TestHostName(".", "."));
+ 
+        UNIT_ASSERT(TestHostName("", "")); 
+        UNIT_ASSERT(TestHostName(".", ".")); 
         UNIT_ASSERT(TestHostName("a.", "a.")); // empty root domain is ok
-        UNIT_ASSERT(TestHostName("a.b.c.д.e.f", "a.b.c.xn--d1a.e.f", true));
-        UNIT_ASSERT(TestHostName("а.б.в.г.д", "xn--80a.xn--90a.xn--b1a.xn--c1a.xn--d1a", true));
-
-        UNIT_ASSERT(TestHostName("-", "-"));
-        UNIT_ASSERT(TestHostName("xn--", "xn--", true));
-        UNIT_ASSERT(TestHostName("xn--aaa.-", "xn--aaa.-", true));
-        UNIT_ASSERT(TestHostName("xn--xn--d1acpjx3f.xn--ru", "xn--xn--d1acpjx3f.xn--ru", true));
-
-        {
-            // non-ascii
+        UNIT_ASSERT(TestHostName("a.b.c.д.e.f", "a.b.c.xn--d1a.e.f", true)); 
+        UNIT_ASSERT(TestHostName("а.б.в.г.д", "xn--80a.xn--90a.xn--b1a.xn--c1a.xn--d1a", true)); 
+ 
+        UNIT_ASSERT(TestHostName("-", "-")); 
+        UNIT_ASSERT(TestHostName("xn--", "xn--", true)); 
+        UNIT_ASSERT(TestHostName("xn--aaa.-", "xn--aaa.-", true)); 
+        UNIT_ASSERT(TestHostName("xn--xn--d1acpjx3f.xn--ru", "xn--xn--d1acpjx3f.xn--ru", true)); 
+ 
+        { 
+            // non-ascii 
             TString bad = "президент.рф";
-            UNIT_ASSERT_EXCEPTION(PunycodeToHostName("президент.рф"), TPunycodeError);
-            UNIT_ASSERT(ForcePunycodeToHostName(bad) == UTF8ToWide(bad));
-        }
-        {
-            // too long domain label
+            UNIT_ASSERT_EXCEPTION(PunycodeToHostName("президент.рф"), TPunycodeError); 
+            UNIT_ASSERT(ForcePunycodeToHostName(bad) == UTF8ToWide(bad)); 
+        } 
+        { 
+            // too long domain label 
             TString bad(500, 'a');
-            UNIT_ASSERT_EXCEPTION(HostNameToPunycode(UTF8ToWide(bad)), TPunycodeError);
+            UNIT_ASSERT_EXCEPTION(HostNameToPunycode(UTF8ToWide(bad)), TPunycodeError); 
             UNIT_ASSERT(TestForced(bad)); // but can decode it
-        }
-        {
-            // already has ACE prefix
+        } 
+        { 
+            // already has ACE prefix 
             TString bad("xn--яндекс.xn--рф");
-            UNIT_ASSERT_EXCEPTION(HostNameToPunycode(UTF8ToWide(bad)), TPunycodeError);
-            UNIT_ASSERT(TestForced(bad));
-        }
-        {
-            // empty non-root domain is not allowed (?)
+            UNIT_ASSERT_EXCEPTION(HostNameToPunycode(UTF8ToWide(bad)), TPunycodeError); 
+            UNIT_ASSERT(TestForced(bad)); 
+        } 
+        { 
+            // empty non-root domain is not allowed (?) 
             TString bad(".яндекс.рф");
-            UNIT_ASSERT_EXCEPTION(HostNameToPunycode(UTF8ToWide(bad)), TPunycodeError);
-            UNIT_ASSERT(TestForced(bad));
-        }
-
-        UNIT_ASSERT(CanBePunycodeHostName("xn--"));
-        UNIT_ASSERT(CanBePunycodeHostName("yandex.xn--p1ai"));
-        UNIT_ASSERT(CanBePunycodeHostName("xn--d1acpjx3f.xn--p1ai"));
-        UNIT_ASSERT(CanBePunycodeHostName("a.b.c.d.xn--e"));
-        UNIT_ASSERT(CanBePunycodeHostName("xn--a.b.c.xn--d.e"));
-        UNIT_ASSERT(!CanBePunycodeHostName("yandex.ru"));       // no xn--
-        UNIT_ASSERT(!CanBePunycodeHostName("яндекс.рф"));       // non-ascii
-        UNIT_ASSERT(!CanBePunycodeHostName("яндекс.xn--p1ai")); // non-ascii
-        UNIT_ASSERT(!CanBePunycodeHostName(""));
+            UNIT_ASSERT_EXCEPTION(HostNameToPunycode(UTF8ToWide(bad)), TPunycodeError); 
+            UNIT_ASSERT(TestForced(bad)); 
+        } 
+ 
+        UNIT_ASSERT(CanBePunycodeHostName("xn--")); 
+        UNIT_ASSERT(CanBePunycodeHostName("yandex.xn--p1ai")); 
+        UNIT_ASSERT(CanBePunycodeHostName("xn--d1acpjx3f.xn--p1ai")); 
+        UNIT_ASSERT(CanBePunycodeHostName("a.b.c.d.xn--e")); 
+        UNIT_ASSERT(CanBePunycodeHostName("xn--a.b.c.xn--d.e")); 
+        UNIT_ASSERT(!CanBePunycodeHostName("yandex.ru"));       // no xn-- 
+        UNIT_ASSERT(!CanBePunycodeHostName("яндекс.рф"));       // non-ascii 
+        UNIT_ASSERT(!CanBePunycodeHostName("яндекс.xn--p1ai")); // non-ascii 
+        UNIT_ASSERT(!CanBePunycodeHostName("")); 
         UNIT_ASSERT(!CanBePunycodeHostName("http://xn--a.b")); // scheme prefix is not detected here
-    }
-}
+    } 
+} 
diff --git a/library/cpp/unicode/punycode/ut/ya.make b/library/cpp/unicode/punycode/ut/ya.make
index 74272102a8..a9dd5f7c34 100644
--- a/library/cpp/unicode/punycode/ut/ya.make
+++ b/library/cpp/unicode/punycode/ut/ya.make
@@ -1,13 +1,13 @@
 UNITTEST_FOR(library/cpp/unicode/punycode)
-
-OWNER(
+ 
+OWNER( 
     g:base
     g:middle
     g:upper
-)
-
-SRCS(
-    punycode_ut.cpp
-)
-
-END()
+) 
+ 
+SRCS( 
+    punycode_ut.cpp 
+) 
+ 
+END() 
diff --git a/library/cpp/unicode/punycode/ya.make b/library/cpp/unicode/punycode/ya.make
index 62b41b07b7..4dce86fbf5 100644
--- a/library/cpp/unicode/punycode/ya.make
+++ b/library/cpp/unicode/punycode/ya.make
@@ -1,17 +1,17 @@
-LIBRARY()
-
-OWNER(
+LIBRARY() 
+ 
+OWNER( 
     g:base
     g:middle
     g:upper
-)
-
-PEERDIR(
-    contrib/libs/libidn
-)
-
-SRCS(
-    punycode.cpp
-)
-
-END()
+) 
+ 
+PEERDIR( 
+    contrib/libs/libidn 
+) 
+ 
+SRCS( 
+    punycode.cpp 
+) 
+ 
+END()