patch 9.0.0621: filetype test leaves file behind Commit: https://github.com/vim/vim/commit/fc06cda8379031890ee8852cdca61eb8af8e1ba2 Author: Dominique Pelle <dominique.pelle@gmail.com> Date: Thu Sep 29 13:07:18 2022 +0100 patch 9.0.0621: filetype test leaves file behind Problem: Filetype test leaves file behind. Solution: Add deferred delete flag to writefile(). (Dominique Pell?, closes #11249)

" Vim filetype plugin file
" Language: 	tmux(1) configuration file
" URL: 		https://github.com/ericpruitt/tmux.vim/
" Maintainer: 	Eric Pruitt <eric.pruitt@gmail.com>
" Last Changed: 2017 Mar 10

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

let b:undo_ftplugin = "setlocal comments< commentstring<"

setlocal comments=:#
setlocal commentstring=#\ %s