patch 9.0.0339: no check if the return value of XChangeGC() is NULL Commit: https://github.com/vim/vim/commit/a63ad78ed31e36dbdf3a9cd28071dcdbefce7d19 Author: Bram Moolenaar <Bram@vim.org> Date: Wed Aug 31 12:01:54 2022 +0100 patch 9.0.0339: no check if the return value of XChangeGC() is NULL Problem: No check if the return value of XChangeGC() is NULL. Solution: Only use the return value when it is not NULL. (closes https://github.com/vim/vim/issues/11020)

" Vim filetype plugin
" Language:      ART-IM and ART*Enterprise
" Maintainer:    Dorai Sitaram <ds26@gte.com>
" URL:		 http://www.ccs.neu.edu/~dorai/vimplugins/vimplugins.html
" Last Change:   Apr 2, 2003

" Only do this when not done yet for this buffer
if exists("b:did_ftplugin")
  finish
endif

run ftplugin/lisp.vim

setl lw-=if
setl lw+=def-art-fun,deffacts,defglobal,defrule,defschema,for,schema,while