patch 8.1.1007: using closure may consume a lot of memory commit https://github.com/vim/vim/commit/209b8e3e3bf7a4a3d102134124120f6c7f57d560 Author: Bram Moolenaar <Bram@vim.org> Date: Thu Mar 14 13:43:24 2019 +0100 patch 8.1.1007: using closure may consume a lot of memory Problem: Using closure may consume a lot of memory. Solution: unreference items that are no longer needed. Add a test. (Ozaki Kiichi, closes #3961)

" 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