patch 8.2.0446: listener with undo of deleting all lines not tested Commit: https://github.com/vim/vim/commit/a07e31af545b91925362854a48c42fee16dd8c28 Author: Bram Moolenaar <Bram@vim.org> Date: Wed Mar 25 21:13:46 2020 +0100 patch 8.2.0446: listener with undo of deleting all lines not tested Problem: Listener with undo of deleting all lines not tested. Solution: Add a test.

" Vim filetype plugin file
" Previous Maintainer:  Nikolai Weibull <now@bitwi.se>
" Latest Revision:      2007-12-04

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=:# commentstring=#\ %s formatoptions-=t formatoptions+=croql

let &cpo = s:cpo_save
unlet s:cpo_save