patch 8.2.0576: some errors are not covered by tests Commit: https://github.com/vim/vim/commit/067297e16a516838dbc46aaa9d8b1a507afec28d Author: Bram Moolenaar <Bram@vim.org> Date: Mon Apr 13 19:55:50 2020 +0200 patch 8.2.0576: some errors are not covered by tests Problem: Some errors are not covered by tests. Solution: Add a few more tests. (Dominique Pelle, closes https://github.com/vim/vim/issues/5920)

" Vim filetype plugin file
" Language:	Diff
" Maintainer:	Bram Moolenaar <Bram@vim.org>
" Last Change:	2005 Jul 27

" Only do this when not done yet for this buffer
if exists("b:did_ftplugin")
  finish
endif
let b:did_ftplugin = 1

let b:undo_ftplugin = "setl modeline<"

" Don't use modelines in a diff, they apply to the diffed file
setlocal nomodeline