https://bugzilla.wikimedia.org/show_bug.cgi?id=55185
--- Comment #3 from Kunal Mehta (Legoktm) legoktm.wikipedia@gmail.com --- defining regularity for date or address in external urls is not simple
the best rule is when number is inside English or latin text it should be English Number and others that are in Farsi text should be convert to Farsi Numbers.