commit https://github.com/vim/vim/commit/89b10421ca1aea55acbafac1df93be4e20210ceb Author: Bram Moolenaar <Bram@vim.org> Date: Tue Jul 12 22:51:22 2016 +0200 patch 7.4.2031 Problem: The list_lbr_utf8 test fails if ~/.vim/syntax/c.vim sets 'textwidth' to a non-zero value. (Oyvind A. Holm) Solution: Add a setup.vim file that sets 'runtimepath' and $HOME to a safe value. (partly by Christian Brabandt, closes #912)

" Vim filetype plugin file
" Language:	hg (Mercurial) commit file
" Maintainer:	Ken Takata <kentkt at csc dot jp>
" Last Change:	2016 Jan 6
" Filenames:	hg-editor-*.txt
" License:	VIM License
" URL:		https://github.com/k-takata/hg-vim

if exists("b:did_ftplugin")
  finish
endif
let b:did_ftplugin = 1

setlocal nomodeline

let b:undo_ftplugin = 'setl modeline<'