patch 8.1.1362: code and data in tests can be hard to read commit https://github.com/vim/vim/commit/c79745a82faeb5a6058e915ca49a4c69fa60ea01 Author: Bram Moolenaar <Bram@vim.org> Date: Mon May 20 22:12:34 2019 +0200 patch 8.1.1362: code and data in tests can be hard to read Problem: Code and data in tests can be hard to read. Solution: Use the new heredoc style. (Yegappan Lakshmanan, closes https://github.com/vim/vim/issues/4400)

" 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