patch 8.1.0422: cannot create map file with MinGW commit https://github.com/vim/vim/commit/4ff4290de1a9c0fddc02b3fc84f5947bb09db06c Author: Bram Moolenaar <Bram@vim.org> Date: Fri Sep 21 14:43:10 2018 +0200 patch 8.1.0422: cannot create map file with MinGW Problem: Cannot create map file with MinGW. Solution: Add support for $MAP. (Ken Takata, closes https://github.com/vim/vim/issues/3460)

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!