patch 8.0.0649: when opening a help file the filetype is set several times commit https://github.com/vim/vim/commit/9049298f8d0bbc237b7c666c7ad6cdabe738e8fc Author: Bram Moolenaar <Bram@vim.org> Date: Thu Jun 22 14:16:31 2017 +0200 patch 8.0.0649: when opening a help file the filetype is set several times Problem: When opening a help file the filetype is set several times. Solution: When setting the filetype to the same value from a modeline, don't trigger FileType autocommands. Don't set the filetype to "help" when it's already set correctly.

" Vim compiler file
" Compiler:	Mono C#
" Maintainer:	Chiel ten Brinke (ctje92@gmail.com)
" Last Change:	2013 May 13

if exists("current_compiler")
  finish
endif

let current_compiler = "xbuild"
let s:keepcpo= &cpo
set cpo&vim

if exists(":CompilerSet") != 2		" older Vim always used :setlocal
  command -nargs=* CompilerSet setlocal <args>
endif

CompilerSet errorformat=\ %#%f(%l\\\,%c):\ %m
CompilerSet makeprg=xbuild\ /nologo\ /v:q\ /property:GenerateFullPaths=true

let &cpo = s:keepcpo
unlet s:keepcpo