patch 8.2.0833: mapping <C-bslash> doesn't work in the GUI Commit: https://github.com/vim/vim/commit/ca5bc746073b6fd4b7651bc02f7a18b1b43bd4ca Author: Bram Moolenaar <Bram@vim.org> Date: Wed May 27 22:08:34 2020 +0200 patch 8.2.0833: mapping <C-bslash> doesn't work in the GUI Problem: Mapping <C-bslash> doesn't work in the GUI. Solution: Reset seenModifyOtherKeys when starting the GUI. (closes https://github.com/vim/vim/issues/6150)

" 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