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_os2.txt for version 7.4 of Vim: Vi IMproved.

This file used to explain the installation of Vim on OS/2 systems.
However, support for OS/2 has been removed in patch 7.4.1008.
See "README.txt" for general information about Vim.