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:	Mathematica
" Maintainer:	Ian Ford <ianf@wolfram.com>
" Last Change:	22 January 2019

" Only do this when not done yet for this buffer
if exists("b:did_ftplugin")
	finish
endif

" Don't load another plugin for this buffer
let b:did_ftplugin = 1

let b:undo_ftplugin = "setlocal commentstring<"

setlocal commentstring=\(*%s*\)