commit https://github.com/vim/vim/commit/20b4f463f4ab50fa9bcc9838aa94101fa5698125 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Mar 5 17:25:39 2016 +0100 patch 7.4.1491 Problem: Visual-block shift breaks multi-byte characters. Solution: Compute column differently. (Yasuhiro Matsumoto) Add a test.

" Settings for test script execution
" Always use "COMMAND.COM", don't use the value of "$SHELL".
set shell=c:\COMMAND.COM shellquote= shellxquote= shellcmdflag=/c shellredir=>
" This is used only when the +eval feature is available.
if executable("cmd.exe")
   set shell=cmd.exe
endif