patch 8.1.1918: redrawing popups is inefficient Commit: https://github.com/vim/vim/commit/e9a891f2559f0ef73596bce025e06bc36b092cbb Author: Bram Moolenaar <Bram@vim.org> Date: Sat Aug 24 15:26:24 2019 +0200 patch 8.1.1918: redrawing popups is inefficient Problem: Redrawing popups is inefficient. Solution: Fix the logic to compute what window lines to redraw. Make it work below the last line. Remove redrawing all windows.

@echo off
rem To be used on MS-Windows for Msys2 with the 32 bit MinGW compiler.
rem Adjust the "c:\msys64" part to match your installation.
@echo on

set PATH=c:\msys64\mingw32\bin;c:\msys64\usr\bin;%PATH%