patch 8.1.0315: helpgrep with language doesn't work properly commit https://github.com/vim/vim/commit/c631f2df624954184509df49479d52ad7fe5233b Author: Bram Moolenaar <Bram@vim.org> Date: Tue Aug 21 21:58:13 2018 +0200 patch 8.1.0315: helpgrep with language doesn't work properly Problem: Helpgrep with language doesn't work properly. (Takuya Fujiwara) Solution: Check for the language earlier. (Hirohito Higashi)

" 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