commit https://github.com/vim/vim/commit/b7522a2f0ca6c970df37241c9e70024465d8596b Author: Bram Moolenaar <Bram@vim.org> Date: Sun Feb 21 17:20:55 2016 +0100 patch 7.4.1379 Problem: Channel test fails on Win32 console. Solution: Don't sleep when timeout is zero. Call channel_wait() before channel_read(). Channels are not polled during ":sleep". (Yukihiro Nakadaira)

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!