patch 8.0.0408: updating folds does not always work properly commit https://github.com/vim/vim/commit/eadbc2b46176e2aff2cde5f3874b734ae2ae082a Author: Bram Moolenaar <Bram@vim.org> Date: Sat Mar 4 18:42:39 2017 +0100 patch 8.0.0408: updating folds does not always work properly Problem: Updating folds does not work properly when inserting a file and a few other situations. Solution: Adjust the way folds are updated. (Matthew Malcomson)

" 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