patch 8.0.0663: unexpected error message only when 'verbose' is set commit https://github.com/vim/vim/commit/f8be461d0284110b321be748fea206d4169b98bb Author: Bram Moolenaar <Bram@vim.org> Date: Fri Jun 23 20:52:40 2017 +0200 patch 8.0.0663: unexpected error message only when 'verbose' is set Problem: Giving an error message only when 'verbose' set is unexpected. Solution: Give a warning message instead.

" 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