patch 9.0.0021: invalid memory access when adding word to spell word list Commit: https://github.com/vim/vim/commit/5e59ea54c0c37c2f84770f068d95280069828774 Author: Bram Moolenaar <Bram@vim.org> Date: Fri Jul 1 22:26:20 2022 +0100 patch 9.0.0021: invalid memory access when adding word to spell word list Problem: Invalid memory access when adding word with a control character to the internal spell word list. Solution: Disallow adding a word with control characters or a trailing slash.

" Vim filetype plugin file
" Language:             m4
" Previous Maintainer:  Nikolai Weibull <now@bitwi.se>
" Latest Revision:      2008-07-09

if exists("b:did_ftplugin")
  finish
endif
let b:did_ftplugin = 1

let s:cpo_save = &cpo
set cpo&vim

let b:undo_ftplugin = "setl com< cms< fo<"

setlocal comments=:#,:dnl commentstring=dnl\ %s
setlocal formatoptions-=t formatoptions+=croql

let &cpo = s:cpo_save
unlet s:cpo_save