patch 8.0.1194: actual fg and bg colors of terminal are unknown commit https://github.com/vim/vim/commit/65e4c4f6868882a380c319632a1728a5e7d274ad Author: Bram Moolenaar <Bram@vim.org> Date: Sat Oct 14 23:24:25 2017 +0200 patch 8.0.1194: actual fg and bg colors of terminal are unknown Problem: Actual fg and bg colors of terminal are unknown. Solution: Add t_RF. Store response to t_RB and t_RF, use for terminal.

" 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