Commit: runtime(c): set 'keywordprg' to :CKeywordPrg in a GUI

[Christian Brabandt]

runtime(c): set 'keywordprg' to :CKeywordPrg in a GUI

Commit: https://github.com/vim/vim/commit/ca6726285ca5ca0442c23a5c0bfeeedf0386b26c
Author: Mateo Gjika <10477759...@users.noreply.github.com>
Date: Mon Jan 26 18:45:18 2026 +0000

runtime(c): set 'keywordprg' to :CKeywordPrg in a GUI

closes: https://github.com/vim/vim/issues/19222

Signed-off-by: Mateo Gjika <10477759...@users.noreply.github.com>
Signed-off-by: Christian Brabandt <c...@256bit.org>

diff --git a/runtime/ftplugin/c.vim b/runtime/ftplugin/c.vim
index 42a435f1d..2793c5d46 100644
--- a/runtime/ftplugin/c.vim
+++ b/runtime/ftplugin/c.vim
@@ -1,7 +1,7 @@
" Vim filetype plugin file
" Language: C
" Maintainer: The Vim Project <https://github.com/vim/vim>
-" Last Change: 2025 Aug 08
+" Last Change: 2026 Jan 26
" Former Maintainer: Bram Moolenaar <Br...@vim.org>

" Only do this when not done yet for this buffer
@@ -40,6 +40,23 @@ if has("vms")
setlocal iskeyword+=$
endif

+" Use terminal window for gui
+if has('gui_running') && exists(':terminal') == 2
+ setlocal keywordprg=:CKeywordPrg
+
+ command! -buffer -nargs=1 -count CKeywordPrg call s:CKeywordPrg(<q-args>, <count>)
+
+ function! s:CKeywordPrg(arg, count) abort
+ if a:count > 0
+ exe printf('term ++close man -s %d %s', a:count, a:arg)
+ else
+ exe printf('term ++close man %s', a:arg)
+ endif
+ endfunction
+
+ let b:undo_ftplugin .= ' | setl kp< | sil! delc -buffer CKeywordPrg'
+endif
+
" When the matchit plugin is loaded, this makes the % command skip parens and
" braces in comments properly.
if !exists("b:match_words")