patch 8.2.0300: Vim9: expression test fails without channel support Commit: https://github.com/vim/vim/commit/b4d2cb1083974a7a7262417d09baf474ca816452 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Feb 22 20:33:08 2020 +0100 patch 8.2.0300: Vim9: expression test fails without channel support Problem: Vim9: expression test fails without channel support. Solution: Add has('channel') check.

" 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