patch 8.1.0668: no test for overstrike mode in the command line commit https://github.com/vim/vim/commit/c0676bab92bd6488e17d05a4a70dfff993ef524e Author: Bram Moolenaar <Bram@vim.org> Date: Mon Dec 31 21:03:02 2018 +0100 patch 8.1.0668: no test for overstrike mode in the command line Problem: No test for overstrike mode in the command line. Solution: Add a test. (Dominique Pelle, closes https://github.com/vim/vim/issues/3742)