Commit: runtime(nroff): set define option & add matchit config in ftplugin

[Christian Brabandt]

runtime(nroff): set define option & add matchit config in ftplugin

Commit: https://github.com/vim/vim/commit/8f3277fbbe92ff0e93289fec4bf8e91841e4ae25
Author: Wu, Zhenyu <wuzh...@ustc.edu>
Date: Wed Feb 12 20:58:57 2025 +0100

runtime(nroff): set define option & add matchit config in ftplugin

closes: https://github.com/vim/vim/issues/16619

Signed-off-by: Wu, Zhenyu <wuzh...@ustc.edu>
Signed-off-by: Aman Verma <amanra...@gmail.com>
Signed-off-by: Christian Brabandt <c...@256bit.org>

diff --git a/runtime/ftplugin/nroff.vim b/runtime/ftplugin/nroff.vim
index ed0b32f5f..7d3d2a597 100644
--- a/runtime/ftplugin/nroff.vim
+++ b/runtime/ftplugin/nroff.vim
@@ -2,8 +2,11 @@
" Language: roff(7)
" Maintainer: Aman Verma
" Homepage: https://github.com/a-vrma/vim-nroff-ftplugin
+" Document: https://www.gnu.org/software/groff/manual/groff.html
" Previous Maintainer: Chris Spiegel <cspi...@gmail.com>
-" 2024 May 24 by Riley Bruins <rib...@gmail.com> ('commentstring')
+" Last Changes:
+" 2024 May 24 by Riley Bruins <rib...@gmail.com> ('commentstring' #14843)
+" 2025 Feb 12 by Wu, Zhenyu <wuzh...@ustc.edu> (matchit configuration #16619)

if exists("b:did_ftplugin")
finish
@@ -13,5 +16,17 @@ let b:did_ftplugin = 1
setlocal commentstring=.\\"\ %s
setlocal comments=:.\\"
setlocal sections+=Sh
+setlocal define=.\s*de

-let b:undo_ftplugin = 'setlocal commentstring< comments< sections<'
+let b:undo_ftplugin = 'setlocal commentstring< comments< sections< define<'
+
+if exists('loaded_matchit')
+ let b:match_words = '^\.\s*ie\>:^\.\s*el\>'
+ \ . ',^\.\s*LB\>:^\.\s*LI\>:^\.\s*LE\>'
+ \ . ',^\.\s*TS\>:^\.\s*TE\>'
+ \ . ',^\.\s*PS\>:^\.\s*P[EF]\>'
+ \ . ',^\.\s*EQ\>:^\.\s*EN\>'
+ \ . ',^\.\s*[\>:^\.\s*]\>'
+ \ . ',^\.\s*FS\>:^\.\s*FE\>'
+ let b:undo_ftplugin .= "| unlet b:match_words"
+endif