patch 8.1.2186: error for bad regexp even though regexp is not used Commit: https://github.com/vim/vim/commit/7eed964b4196b0bfc6cf09dc449f0b9650b2d31e Author: Bram Moolenaar <Bram@vim.org> Date: Sat Oct 19 20:57:28 2019 +0200 patch 8.1.2186: error for bad regexp even though regexp is not used Problem: Error for bad regexp even though regexp is not used, when writing a file. (Arseny Nasokin) Solution: Ignore regexp errors. (closes #5059)

" 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