patch 8.0.0381: diff mode is not sufficiently tested commit https://github.com/vim/vim/commit/aeb661e1f4a491286ef7af8c3105aff1f3b16f1c Author: Bram Moolenaar <Bram@vim.org> Date: Sun Feb 26 19:59:59 2017 +0100 patch 8.0.0381: diff mode is not sufficiently tested Problem: Diff mode is not sufficiently tested. Solution: Add more diff mode tests. (Dominique Pelle, closes https://github.com/vim/vim/issues/1515)