patch 8.2.0371: crash with combination of terminal popup and autocmd Commit: https://github.com/vim/vim/commit/cee52204ca030ce7814844e4dab8b4ed897ba3cc Author: Bram Moolenaar <Bram@vim.org> Date: Wed Mar 11 14:19:58 2020 +0100 patch 8.2.0371: crash with combination of terminal popup and autocmd Problem: Crash with combination of terminal popup and autocmd. Solution: Disallow closing a popup that is the current window. Add a check that the current buffer is valid. (closes #5754)

" Vim filetype plugin file
" Language:             Vim help file
" Previous Maintainer:  Nikolai Weibull <now@bitwi.se>
" Latest Revision:      2018-12-29

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 fo< tw< cole< cocu< keywordprg<"

setlocal formatoptions+=tcroql textwidth=78 keywordprg=:help
if has("conceal")
  setlocal cole=2 cocu=nc
endif

let &cpo = s:cpo_save
unlet s:cpo_save