patch 8.1.0814: :mksession cannot handle a very long 'runtimepath' commit https://github.com/vim/vim/commit/ed18f2c03ae4786b489943cb575bb781a70356e4 Author: Bram Moolenaar <Bram@vim.org> Date: Thu Jan 24 20:30:52 2019 +0100 patch 8.1.0814: :mksession cannot handle a very long 'runtimepath' Problem: :mksession cannot handle a very long 'runtimepath'. (Timothy Madden) Solution: Expand each part separately, instead of the whole option at once. (Christian Brabandt, closes #3466)

" 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