Commit: runtime(cpp): Change 'cms' for C++ to '// %s'

[Christian Brabandt]

runtime(cpp): Change 'cms' for C++ to '// %s'

Commit: https://github.com/vim/vim/commit/ce47d32b03bb7df0100b2625ef68fad1eb4646e3
Author: Luc Hermitte <luc.he...@csgroup.eu>
Date: Thu Jun 6 18:44:30 2024 +0200

runtime(cpp): Change 'cms' for C++ to '// %s'

fixes: https://github.com/vim/vim/issues/14911
closes: https://github.com/vim/vim/issues/14926

Signed-off-by: Luc Hermitte <luc.he...@csgroup.eu>
Signed-off-by: Christian Brabandt <c...@256bit.org>

diff --git a/runtime/ftplugin/cpp.vim b/runtime/ftplugin/cpp.vim
index fc92935a1..fac3edd2e 100644
--- a/runtime/ftplugin/cpp.vim
+++ b/runtime/ftplugin/cpp.vim
@@ -1,7 +1,7 @@
" Vim filetype plugin file
" Language: C++
" Maintainer: The Vim Project <https://github.com/vim/vim>
-" Last Change: 2023 Aug 10
+" Last Change: 2024 Jun 06
" Former Maintainer: Bram Moolenaar <Br...@vim.org>

" Only do this when not done yet for this buffer
@@ -12,6 +12,10 @@ endif
" Behaves mostly just like C
runtime! ftplugin/c.vim ftplugin/c_*.vim ftplugin/c/*.vim

+" Change 'commentstring' to "C++ style"/"mono-line" comments
+setlocal commentstring=//\ %s
+let b:undo_ftplugin ..= ' | setl commentstring<'
+
" C++ uses templates with <things>
" Disabled, because it gives an error for typing an unmatched ">".
" set matchpairs+=<:>