patch 8.2.2173: Vim9: get internal error when assigning to undefined variable Commit: https://github.com/vim/vim/commit/52c124d3303d3cc3e4504708881906d17d6d6c55 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Dec 20 21:43:35 2020 +0100 patch 8.2.2173: Vim9: get internal error when assigning to undefined variable Problem: Vim9: get internal error when assigning to undefined variable. Solution: Add error message. (closes https://github.com/vim/vim/issues/7475)

" 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