commit https://github.com/vim/vim/commit/b0262f239e77480f81fa3345491b7b6d52a17f6d Author: Bram Moolenaar <Bram@vim.org> Date: Fri Sep 25 15:28:38 2015 +0200 patch 7.4.876 Problem: Windows7: when using vim.exe with msys or msys2, conhost.exe (console window provider on Windows7) will freeze or crash. Solution: Make original screen buffer active, before executing external program. And when the program is finished, revert to vim's one. (Taro Muraoka)

README_src.txt for version 7.4 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-7.4-rt.tar.gz).  To be able to run Vim you MUST get the runtime
archive too!