neovim

commit af7925ec58f43065aa8d2de089618bc755757120
parent 9ca69488cf08d78609ad4baef50bbcbbc937a9b7
Author: zeertzjq <zeertzjq@outlook.com>
Date:   Fri,  9 Jan 2026 09:39:29 +0800

vim-patch:335aecd: runtime(cpp): Fix c++ float and integer literal syntax highlighting

closes: vim/vim#8939

https://github.com/vim/vim/commit/335aecd98f75a081ad34b99e34922f3e7e0b25ea

Co-authored-by: Dominique Pelle <dominique.pelle@gmail.com>
Co-authored-by: Eisuke Kawashima <e-kwsm@users.noreply.github.com>

Diffstat:
M
runtime/syntax/cpp.vim
 | 
23
++++++++++++-----------

1 file changed, 12 insertions(+), 11 deletions(-)
diff --git a/runtime/syntax/cpp.vim b/runtime/syntax/cpp.vim
@@ -4,8 +4,9 @@
 " Previous Maintainer:	vim-jp (https://github.com/vim-jp/vim-cpp)
 "			Ken Shan <ccshan@post.harvard.edu>
 " Last Change:	2024 May 04
-"   2024 May 04 by Vim Project (fix digit separator in octals and floats)
-"   2026 Jan 06 by Vim Project (announce adoption)
+"   2024 May 04 by Vim Project fix digit separator in octals and floats
+"   2026 Jan 06 by Vim Project orphaning announcement
+"   2026 Jan 08 by Vim Project highlight capital letter prefixes for numbers
 
 " quit when a syntax file was already loaded
 if exists("b:current_syntax")
@@ -59,11 +60,11 @@ if !exists("cpp_no_cpp14")
   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[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\('\=\d\+\)*\.\(\d\('\=\d\+\)*\)\=\([Ee][-+]\=\d\+\)\=\([FfLl]\|i[fl]\=\|h\|min\|s\|ms\|us\|ns\|_\i*\)\=\>"
+  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 region cppString		start=+\(L\|u\|u8\|U\)\="+ skip=+\\\\\|\\"\|\\$+ excludenl end=+"\(sv\|s\|_\i*\)\=+ end='$' contains=cSpecial,cFormat,@Spell
 endif
 
@@ -71,8 +72,8 @@ endif
 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'[^\\]'"
@@ -94,8 +95,8 @@ if !exists("cpp_no_cpp20")
   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