patch 8.1.1610: there is no way to add or load a buffer without side effects commit https://github.com/vim/vim/commit/15e248e37f3925d430f96e945d52d3dc423cdc83 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Jun 30 20:21:37 2019 +0200 patch 8.1.1610: there is no way to add or load a buffer without side effects Problem: There is no way to add or load a buffer without side effects. Solution: Add the bufadd() and bufload() functions.

" 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