patch 8.1.1017: off-by-one error in filetype detection commit https://github.com/vim/vim/commit/493fbe4abee660d30b4f2aef87b754b0a720213c Author: Bram Moolenaar <Bram@vim.org> Date: Sun Mar 17 17:16:12 2019 +0100 patch 8.1.1017: off-by-one error in filetype detection Problem: Off-by-one error in filetype detection. Solution: Also check the last line of the file.

" 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