patch 8.1.1055: CTRL-G U in Insert mode doesn't work for shift-Left commit https://github.com/vim/vim/commit/75bf3d22f42684beecd977f3185e98045b5c33d9 Author: Bram Moolenaar <Bram@vim.org> Date: Tue Mar 26 22:46:05 2019 +0100 patch 8.1.1055: CTRL-G U in Insert mode doesn't work for shift-Left Problem: CTRL-G U in Insert mode doesn't work to avoid splitting the undo sequence for shift-left and shift-right. Solution: Also check dont_sync_undo for shifted cursor keys. (Christian Brabandt)

README_src.txt for version 8.1 of Vim: Vi IMproved.

The source archive contains the files needed to compile Vim on Unix systems.
It is packed for Unix systems (NL line separator).

For more information, see the README.txt file that comes with the runtime
archive (vim-8.1-rt.tar.gz).  To be able to run Vim you MUST get the runtime
archive too!