Commit: runtime(cpp): Fix digit separator in syntax script for octals and floats

[Christian Brabandt]

runtime(cpp): Fix digit separator in syntax script for octals and floats

Commit: https://github.com/vim/vim/commit/c5def6561d5612487ac3523787da1c26335b17e1
Author: Wu Yongwei <wuyo...@gmail.com>
Date: Tue May 7 18:24:55 2024 +0200

runtime(cpp): Fix digit separator in syntax script for octals and floats

Also fix the incorrect rendering of floats that start with ".".

closes: #14724

Signed-off-by: Wu Yongwei <wuyo...@gmail.com>
Signed-off-by: Christian Brabandt <c...@256bit.org>

diff --git a/runtime/syntax/cpp.vim b/runtime/syntax/cpp.vim
index 8daf90a33..ff1226b7b 100644
--- a/runtime/syntax/cpp.vim
+++ b/runtime/syntax/cpp.vim
@@ -2,7 +2,8 @@
" Language: C++
" Current Maintainer: vim-jp (https://github.com/vim-jp/vim-cpp)
" Previous Maintainer: Ken Shan <ccs...@post.harvard.edu>
-" Last Change: 2023 Dec 08
+" Last Change: 2024 May 04
+" 2024 May 04 by Vim Project (fix digit separator in octals and floats)

" quit when a syntax file was already loaded
if exists("b:current_syntax")
@@ -55,11 +56,11 @@ if !exists("cpp_no_cpp14")
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 "\<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*\(e[-+]\=\d\+\)\=\([FfLl]\|i[fl]\=\|h\|min\|s\|ms\|us\|ns\|_\i*\)\=\>"
- syn match cppFloat display contained "\<\.\d\+\(e[-+]\=\d\+\)\=\([FfLl]\|i[fl]\=\|h\|min\|s\|ms\|us\|ns\|_\i*\)\=\>"
+ syn match 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 region cppString start=+\(L\|u\|u8\|U\)\="+ skip=+\\\|\"\|\$+ excludenl end=+"\(sv\|s\|_\i*\)\=+ end='$' contains=cSpecial,cFormat,@Spell
endif