patch 8.0.0707: freeing wrong memory with certain autocommands commit https://github.com/vim/vim/commit/f1d13478e3a7e1a86d52552c8c5571f00dc28ad1 Author: Bram Moolenaar <Bram@vim.org> Date: Tue Jul 11 18:28:46 2017 +0200 patch 8.0.0707: freeing wrong memory with certain autocommands Problem: Freeing wrong memory when manipulating buffers in autocommands. (James McCoy) Solution: Also set the w_s pointer if w_buffer was NULL.

" Settings for test script execution
" Always use "sh", don't use the value of "$SHELL".
set shell=sh

" Only when the +eval feature is present. 
if 1
  " While some tests overwrite $HOME to prevent them from polluting user files,
  " we need to remember the original value so that we can tell external systems
  " where to ask about their own user settings.
  let g:tester_HOME = $HOME
endif

source setup.vim