patch 8.0.1190: unusable after opening new window in BufWritePre event commit https://github.com/vim/vim/commit/2c33d7bb69c4c2c5b0e39b03cc4b0c04cfdfbb0b Author: Bram Moolenaar <Bram@vim.org> Date: Sat Oct 14 16:06:20 2017 +0200 patch 8.0.1190: unusable after opening new window in BufWritePre event Problem: Vim becomes unusable after opening new window in BufWritePre event. Solution: Call not_exiting(). (Martin Tournoij, closes #2205) Also for "2q" when a help window is open. Add a test.

" Vim compiler file
" Compiler:	Unit testing tool for Python
" Maintainer:	Max Ischenko <mfi@ukr.net>
" Last Change: 2004 Mar 27

if exists("current_compiler")
  finish
endif
let current_compiler = "pyunit"

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

CompilerSet efm=%C\ %.%#,%A\ \ File\ \"%f\"\\,\ line\ %l%.%#,%Z%[%^\ ]%\\@=%m