commit https://github.com/vim/vim/commit/ca568aeec60dd6cc13b4dcf5cec0e0a07113547f Author: Bram Moolenaar <Bram@vim.org> Date: Mon Feb 1 21:32:58 2016 +0100 patch 7.4.1230 Problem: Win32: opening a channel may hang. Not checking for messages while waiting for characters. Solution: Add a zero timeout. Call parse_queued_messages(). (Yasuhiro Matsumoto)