commit https://github.com/vim/vim/commit/23c463a157b4f5585ad85efc9f453ffc09c245c3 Author: Bram Moolenaar <Bram@vim.org> Date: Mon Feb 22 11:39:27 2016 +0100 patch 7.4.1386 Problem: When the Job exit callback is invoked, the job may be freed too soon. (Yasuhiro Matsumoto) Solution: Increase refcount.

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.