Commit: runtime(forth): Fix :unlet error in ftplugin (#13090)

[Christian Brabandt]

runtime(forth): Fix :unlet error in ftplugin (#13090)

Commit: https://github.com/vim/vim/commit/c1f8bb37c6a8e0babc2a41f16860763b57c23fa1
Author: dkearns <dougk...@gmail.com>
Date: Sat Sep 16 00:47:06 2023 +1000

runtime(forth): Fix :unlet error in ftplugin (https://github.com/vim/vim/issues/13090)

Fixes https://github.com/vim/vim/issues/13089.

Signed-off-by: Christian Brabandt <c...@256bit.org>

diff --git a/runtime/ftplugin/forth.vim b/runtime/ftplugin/forth.vim
index 5343784a2..d28c8484e 100644
--- a/runtime/ftplugin/forth.vim
+++ b/runtime/ftplugin/forth.vim
@@ -1,7 +1,7 @@
" Vim filetype plugin
" Language: Forth
" Maintainer: Johan Kotlinski <kotl...@gmail.com>
-" Last Change: 2023 Aug 08
+" Last Change: 2023 Sep 15
" URL: https://github.com/jkotlinski/forth.vim

if exists("b:did_ftplugin")
@@ -58,6 +58,7 @@ if exists("loaded_matchit") && !exists("b:match_words")
let b:match_ignorecase = 1
let b:match_words = s:matchit_patterns[1:]->join(',')
let b:undo_ftplugin ..= "| unlet! b:match_ignorecase b:match_words"
+ unlet s:matchit_patterns
endif

if (has("gui_win32") || has("gui_gtk")) && !exists("b:browsefilter")
@@ -68,4 +69,4 @@ endif

let &cpo = s:cpo_save
unlet s:cpo_save
-unlet s:define_patterns s:include_patterns s:matchit_patterns
+unlet s:define_patterns s:include_patterns