patch 8.1.1571: textprop highlight starts too early if just after a tab commit https://github.com/vim/vim/commit/a956bf6ca34896c3f242bf726b709a725f9053ce Author: Bram Moolenaar <Bram@vim.org> Date: Wed Jun 19 17:34:24 2019 +0200 patch 8.1.1571: textprop highlight starts too early if just after a tab Problem: textprop highlight starts too early if just after a tab. Solution: Check if still drawing a previous character. (closes https://github.com/vim/vim/issues/4558)

let encoding = &enc
if encoding == ''
	let encoding = 'utf-8'
endif

if encoding == 'utf-8'
	source <sfile>:p:h/persian-iranian_utf-8.vim
endif