Commit: runtime(javacc): Check for existence of javaFuncDef syn group before clearing it

[Christian Brabandt]

runtime(javacc): Check for existence of javaFuncDef syn group before clearing it

Commit: https://github.com/vim/vim/commit/bfebd1209bd39b3c8afe5dceae37a20152efac35
Author: Christian Brabandt <c...@256bit.org>
Date: Mon May 11 10:15:02 2026 +0200

runtime(javacc): Check for existence of javaFuncDef syn group before clearing it

fixes: https://github.com/vim/vim/issues/20190

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

diff --git a/runtime/syntax/javacc.vim b/runtime/syntax/javacc.vim
index a80572d51..f81e12d29 100644
--- a/runtime/syntax/javacc.vim
+++ b/runtime/syntax/javacc.vim
@@ -3,6 +3,7 @@
" Maintainer: Claudio Fleiner <cla...@fleiner.com>
" URL: http://www.fleiner.com/vim/syntax/javacc.vim
" Last Change: 2012 Oct 05
+" 2026 May 11 by Vim project: check for existence of javaFuncDef before clearing it

" Uses java.vim, and adds a few special things for JavaCC Parser files.
" Those files usually have the extension *.jj
@@ -33,7 +34,9 @@ syn clear javaError2
" remove function definitions (they look different) (first define in
" in case it was not defined in java.vim)
"syn match javaFuncDef "--"
-syn clear javaFuncDef
+if hlexists('javaFuncDef')
+ syn clear javaFuncDef
+endif
syn match javaFuncDef "[$_a-zA-Z][$_a-zA-Z0-9_. \[\]]*([^-+*/()]*)[ ]*:" contains=javaType

syn keyword javaccPackages options DEBUG_PARSER DEBUG_LOOKAHEAD DEBUG_TOKEN_MANAGER