commit https://github.com/vim/vim/commit/16ec3c9be3fcdc38530bddb12978bc5a7b98c0f6 Author: Bram Moolenaar <Bram@vim.org> Date: Mon Jul 18 22:22:39 2016 +0200 patch 7.4.2067 Problem: Compiler warning for char/char_u conversion. (Tony Mechelynck) Inefficient code. Solution: Use more lines to fill with spaces. (Nikolai Pavlov) Add type cast.

" Common preparations for running tests.

" Make sure 'runtimepath' does not include $HOME.
set rtp=$VIM/vimfiles,$VIMRUNTIME,$VIM/vimfiles/after

" Only when the +eval feature is present. 
if 1
  " Make sure $HOME does not get read or written.
  let $HOME = '/does/not/exist'
endif