patch 8.2.1320: Vim9: cannot declare some single letter variables Commit: https://github.com/vim/vim/commit/33afa2447bdb0bdd15253c69a2cf6f9903685815 Author: Bram Moolenaar <Bram@vim.org> Date: Wed Jul 29 19:18:00 2020 +0200 patch 8.2.1320: Vim9: cannot declare some single letter variables Problem: Vim9: cannot declare some single letter variables. Solution: Do not recognize a colon for a namespace for single letter variables. (closes #6547)

" 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