patch 8.0.0438: the fnamemodify test may cause later tests to fail commit https://github.com/vim/vim/commit/056f700031602a2734b1ddf45f6bc2817e49b996 Author: Bram Moolenaar <Bram@vim.org> Date: Thu Mar 9 14:00:27 2017 +0100 patch 8.0.0438: the fnamemodify test may cause later tests to fail Problem: The fnamemodify test changes 'shell' in a way later tests may not be able to use system(). Solution: Save and restore 'shell'.