patch 8.0.0462: failure of an MS-Windows test may go unnoticed commit https://github.com/vim/vim/commit/b27523ff7ab3083c20c0f33415d890f978726c4f Author: Bram Moolenaar <Bram@vim.org> Date: Thu Mar 16 14:04:51 2017 +0100 patch 8.0.0462: failure of an MS-Windows test may go unnoticed Problem: If an MS-Windows tests succeeds at first and then fails in a way it does not produce a test.out file it looks like the test succeeded. Solution: Delete the previous output file.