patch 8.2.0789: Vim9: expression testing lost coverage using constants Commit: https://github.com/vim/vim/commit/66b3101672f7da32df2fd3962d7f14300e7a65f3 Author: Bram Moolenaar <Bram@vim.org> Date: Mon May 18 13:38:02 2020 +0200 patch 8.2.0789: Vim9: expression testing lost coverage using constants Problem: Vim9: expression testing lost coverage using constants. Solution: Use a few variables instead of constants.

" 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