commit https://github.com/vim/vim/commit/66459b7c98c67f8a9d39de8f08e8e8f1fca0e359 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Aug 6 19:01:55 2016 +0200 patch 7.4.2164 Problem: It is not possible to use plugins in an "after" directory to tune the behavior of a package. Solution: First load plugins from non-after directories, then packages and finally plugins in after directories. Reset 'loadplugins' before executing --cmd arguments.

" Common preparations for running tests.

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

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