patch 8.2.0298: Vim9 script: cannot start command with a string constant Commit: https://github.com/vim/vim/commit/0c6ceaf90389b41545d803458c4813013811c756 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Feb 22 18:36:32 2020 +0100 patch 8.2.0298: Vim9 script: cannot start command with a string constant Problem: Vim9 script: cannot start command with a string constant. Solution: Recognize expression starting with '('.

" 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