updated for version 7.3.970 Problem: Syntax highlighting can be slow. Solution: Include the NFA regexp engine. Add the 'regexpengine' option to select which one is used. (various authors, including Ken Takata, Andrei Aiordachioaie, Russ Cox, Xiaozhou Liua, Ian Young)

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.