commit https://github.com/vim/vim/commit/707659490d35e8d66e8bbdcfd93b12dc1387d86c Author: Bram Moolenaar <Bram@vim.org> Date: Sun Feb 28 19:28:59 2016 +0100 patch 7.4.1451 Problem: Vim hangs when a channel has a callback but isn't referenced. Solution: Have channel_unref() only return TRUE when the channel was actually freed.

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.