patch 8.1.1436: writefile test fails when run under /tmp commit https://github.com/vim/vim/commit/c28cb5b16df76353a5995fda3b9341612b8630c1 Author: Bram Moolenaar <Bram@vim.org> Date: Fri May 31 20:42:09 2019 +0200 patch 8.1.1436: writefile test fails when run under /tmp Problem: Writefile test fails when run under /tmp. Solution: Adjust 'backupskip. (Kenta Sato, closes https://github.com/vim/vim/issues/4462)

" 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