commit https://github.com/vim/vim/commit/9ec7fa82a2c4f0283862ed704c2940959e6130ee Author: Bram Moolenaar <Bram@vim.org> Date: Tue Oct 18 13:06:41 2016 +0200 patch 8.0.0043 Problem: When using Insert mode completion with 'completeopt' containing "noinsert" with CTRL-N the change is not saved for undo. (Tommy Allen) Solution: Call stop_arrow() before inserting for any key.