patch 8.1.1377: MS-Windows GUI uses wrong shell command for bash commit https://github.com/vim/vim/commit/fcc4d921d6761b833ae89ca3dc450c48c270ca36 Author: Bram Moolenaar <Bram@vim.org> Date: Fri May 24 13:32:36 2019 +0200 patch 8.1.1377: MS-Windows GUI uses wrong shell command for bash Problem: MS-Windows GUI uses wrong shell command for bash. (Robert Bogomip) Solution: Check that 'shellcmdflag' is "/c". (Ken Takata, closes https://github.com/vim/vim/issues/4418)

@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%