patch 8.1.1803: all builtin functions are global commit https://github.com/vim/vim/commit/ac92e25a33c37ec5becbfffeccda136c73b761ac Author: Bram Moolenaar <Bram@vim.org> Date: Sat Aug 3 21:58:38 2019 +0200 patch 8.1.1803: all builtin functions are global Problem: All builtin functions are global. Solution: Add the method call operator ->. Implemented for a limited number of 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