commit https://github.com/vim/vim/commit/8b5f65a527c353b9942e362e719687c3a7592309 Author: Bram Moolenaar <Bram@vim.org> Date: Tue Sep 1 19:26:12 2015 +0200 patch 7.4.849 Problem: Moving the cursor in Insert mode starts new undo sequence. Solution: Add CTRL-G U to keep the undo sequence for the following cursor movement command. (Christian Brabandt)