commit https://github.com/vim/vim/commit/10ad1d90da8c464e1bf08bf23d92d4888378a8a1 Author: Bram Moolenaar <Bram@vim.org> Date: Fri Sep 25 19:35:02 2015 +0200 patch 7.4.883 Problem: Block-mode replace works characterwise instead of blockwise after column 147. (Issue #422) Solution: Set Visual mode. (Christian Brabandt)

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.