syntax file is out of sync

[e-kwsm]

--- https://github.com/vim/vim/blob/6625ba359e33f8223d146f3ae87a880c446b5470/runtime/syntax/cpp.vim
+++ https://github.com/vim-jp/vim-cpp/blob/36eb76a54a62024bd63fc01f225d43133e4c792d/syntax/cpp.vim
@@ -2,8 +2,7 @@
 " Language:    C++
 " Current Maintainer:  vim-jp (https://github.com/vim-jp/vim-cpp)
 " Previous Maintainer: Ken Shan <ccshan@post.harvard.edu>
-" Last Change: 2024 May 04
-"   2024 May 04 by Vim Project (fix digit separator in octals and floats)
+" Last Change: 2021 May 04

 " quit when a syntax file was already loaded
 if exists("b:current_syntax")
@@ -16,7 +15,6 @@
 " Read the C syntax to start with
 runtime! syntax/c.vim
 unlet b:current_syntax
-unlet b:filetype_in_cpp_family

 " C++ extensions
 syn keyword cppStatement       new delete this friend using
@@ -56,12 +54,12 @@
   syn match cppNumbers         display transparent "\<\d\|\.\d" contains=cppNumber,cppFloat
   syn match cppNumber          display contained "\<0\([Uu]\=\([Ll]\|LL\|ll\)\|\([Ll]\|LL\|ll\)\=[Uu]\|i[fl]\=\|h\|min\|s\|ms\|us\|ns\|_\i*\)\=\>"
   syn match cppNumber          display contained "\<[1-9]\('\=\d\+\)*\([Uu]\=\([Ll]\|LL\|ll\)\|\([Ll]\|LL\|ll\)\=[Uu]\|i[fl]\=\|h\|min\|s\|ms\|us\|ns\|_\i*\)\=\>"
-  syn match cppNumber          display contained "\<0\('\=\o\+\)\+\([Uu]\=\([Ll]\|LL\|ll\)\|\([Ll]\|LL\|ll\)\=[Uu]\|i[fl]\=\|h\|min\|s\|ms\|us\|ns\|_\i*\)\=\>"
-  syn match cppNumber          display contained "\<0b[01]\('\=[01]\+\)*\([Uu]\=\([Ll]\|LL\|ll\)\|\([Ll]\|LL\|ll\)\=[Uu]\|i[fl]\=\|h\|min\|s\|ms\|us\|ns\|_\i*\)\=\>"
-  syn match cppNumber          display contained "\<0x\x\('\=\x\+\)*\([Uu]\=\([Ll]\|LL\|ll\)\|\([Ll]\|LL\|ll\)\=[Uu]\|i[fl]\=\|h\|min\|s\|ms\|us\|ns\|_\i*\)\=\>"
-  syn match cppFloat           display contained "\<\d\('\=\d\+\)*\.\(\d\('\=\d\+\)*\)\=\(e[-+]\=\d\+\)\=\([FfLl]\|i[fl]\=\|h\|min\|s\|ms\|us\|ns\|_\i*\)\=\>"
-  syn match cppFloat           display contained "\.\d\('\=\d\+\)*\(e[-+]\=\d\+\)\=\([FfLl]\|i[fl]\=\|h\|min\|s\|ms\|us\|ns\|_\i*\)\=\>"
-  syn match cppFloat           display contained "\<\d\+e[-+]\=\d\+\([FfLl]\|i[fl]\=\|h\|min\|s\|ms\|us\|ns\|_\i*\)\=\>"
+  syn match cppNumber          display contained "\<0\o\+\([Uu]\=\([Ll]\|LL\|ll\)\|\([Ll]\|LL\|ll\)\=[Uu]\|i[fl]\=\|h\|min\|s\|ms\|us\|ns\|_\i*\)\=\>"
+  syn match cppNumber          display contained "\<0[bB][01]\('\=[01]\+\)*\([Uu]\=\([Ll]\|LL\|ll\)\|\([Ll]\|LL\|ll\)\=[Uu]\|i[fl]\=\|h\|min\|s\|ms\|us\|ns\|_\i*\)\=\>"
+  syn match cppNumber          display contained "\<0[xX]\x\('\=\x\+\)*\([Uu]\=\([Ll]\|LL\|ll\)\|\([Ll]\|LL\|ll\)\=[Uu]\|i[fl]\=\|h\|min\|s\|ms\|us\|ns\|_\i*\)\=\>"
+  syn match cppFloat           display contained "\<\d\+\.\d*\([eE][-+]\=\d\+\)\=\([FfLl]\|i[fl]\=\|h\|min\|s\|ms\|us\|ns\|_\i*\)\=\>"
+  syn match cppFloat           display contained "\<\.\d\+\([eE][-+]\=\d\+\)\=\([FfLl]\|i[fl]\=\|h\|min\|s\|ms\|us\|ns\|_\i*\)\=\>"
+  syn match cppFloat           display contained "\<\d\+[eE][-+]\=\d\+\([FfLl]\|i[fl]\=\|h\|min\|s\|ms\|us\|ns\|_\i*\)\=\>"
   syn region cppString         start=+\(L\|u\|u8\|U\)\="+ skip=+\\\\\|\\"\|\\$+ excludenl end=+"\(sv\|s\|_\i*\)\=+ end='$' contains=cSpecial,cFormat,@Spell
 endif
 
@@ -69,8 +67,8 @@
 if !exists("cpp_no_cpp17")
   syn match cppCast            "\<reinterpret_pointer_cast\s*<"me=e-1
   syn match cppCast            "\<reinterpret_pointer_cast\s*$"
-  syn match cppFloat           display contained "\<0x\x*\.\x\+p[-+]\=\d\+\([FfLl]\|i[fl]\=\|h\|min\|s\|ms\|us\|ns\|_\i*\)\=\>"
-  syn match cppFloat           display contained "\<0x\x\+\.\=p[-+]\=\d\+\([FfLl]\|i[fl]\=\|h\|min\|s\|ms\|us\|ns\|_\i*\)\=\>"
+  syn match cppFloat           display contained "\<0[xX]\x*\.\x\+p[-+]\=\d\+\([FfLl]\|i[fl]\=\|h\|min\|s\|ms\|us\|ns\|_\i*\)\=\>"
+  syn match cppFloat           display contained "\<0[xX]\x\+\.\=p[-+]\=\d\+\([FfLl]\|i[fl]\=\|h\|min\|s\|ms\|us\|ns\|_\i*\)\=\>"

   " TODO: push this up to c.vim if/when supported in C23
   syn match cppCharacter       "u8'[^\\]'"
@@ -84,7 +82,6 @@
   endif
   syn match cppSpecialCharacter display "u8'\\\o\{1,3}'"
   syn match cppSpecialCharacter display "u8'\\x\x\+'"
-
 endif

 " C++ 20 extensions
@@ -92,8 +89,8 @@
   syn match cppNumber          display contained "\<0\(y\|d\)\>"
   syn match cppNumber          display contained "\<[1-9]\('\=\d\+\)*\(y\|d\)\>"
   syn match cppNumber          display contained "\<0\o\+\(y\|d\)\>"
-  syn match cppNumber          display contained "\<0b[01]\('\=[01]\+\)*\(y\|d\)\>"
-  syn match cppNumber          display contained "\<0x\x\('\=\x\+\)*\(y\|d\)\>"
+  syn match cppNumber          display contained "\<0[bB][01]\('\=[01]\+\)*\(y\|d\)\>"
+  syn match cppNumber          display contained "\<0[xX]\x\('\=\x\+\)*\(y\|d\)\>"
   syn keyword cppStatement     co_await co_return co_yield requires
   syn keyword cppStorageClass  consteval constinit
   syn keyword cppStructure     concept
@@ -105,26 +102,26 @@
 syn match cppMinMax "[<>]?"

 " Default highlighting
-hi def link cppAccess          cppStatement
-hi def link cppCast            cppStatement
+hi def link cppAccess                  cppStatement
+hi def link cppCast                    cppStatement
 hi def link cppExceptions              Exception
-hi def link cppOperator                Operator
+hi def link cppOperator                        Operator
 hi def link cppStatement               Statement
-hi def link cppModifier                Type
-hi def link cppType            Type
-hi def link cppStorageClass    StorageClass
+hi def link cppModifier                        Type
+hi def link cppType                    Type
+hi def link cppStorageClass            StorageClass
 hi def link cppStructure               Structure
-hi def link cppBoolean         Boolean
+hi def link cppBoolean                 Boolean
 hi def link cppCharacter               cCharacter
 hi def link cppSpecialCharacter                cSpecialCharacter
 hi def link cppSpecialError            cSpecialError
-hi def link cppConstant                Constant
+hi def link cppConstant                        Constant
 hi def link cppRawStringDelimiter      Delimiter
 hi def link cppRawString               String
-hi def link cppString          String
-hi def link cppNumber          Number
-hi def link cppFloat           Number
-hi def link cppModule          Include
+hi def link cppString                  String
+hi def link cppNumber                  Number
+hi def link cppFloat                   Number
+hi def link cppModule                  Include

 let b:current_syntax = "cpp"
 

[mattn]

Thank you. I'll update.

[mattn]

done

[e-kwsm]

Thanks, but I meant that the vim and this repositories diverged; the fix in #63 is gone, and is not sent to vim repo.