commit https://github.com/vim/vim/commit/c8dcbb12c5d7f3eb0c334daebb4475bb015b91e7 Author: Bram Moolenaar <Bram@vim.org> Date: Thu Feb 25 23:10:17 2016 +0100 patch 7.4.1421 Problem: May free a channel when a callback may need to be invoked. Solution: Keep the channel when refcount is zero.

For information about installation of Farsi fonts and Vim usage in Farsi mode,
refer to the Farsi help file by typing ":help farsi" in Vim.