This task is a split in 3 tasks of a major task T115561 .
Approval :
We voted in Arabic Wikipedia for the exclusive use of Western Arabic numerals (WAN) (0, 1, 2 ) instead of allowing the use of Eastern Arabic numerals (EAN) (٠ - ١ - ٢) when editing.
21 for / none against
https://ar.wikipedia.org/wiki/%D9%88%D9%8A%D9%83%D9%8A%D8%A8%D9%8A%D8%AF%D9%8A%D8%A7:%D8%A7%D9%84%D9%85%D9%8A%D8%AF%D8%A7%D9%86/%D8%B3%D9%8A%D8%A7%D8%B3%D8%A7%D8%AA/10/2015
And the related policy have been updated
https://ar.wikipedia.org/w/index.php?title=%D9%88%D9%8A%D9%83%D9%8A%D8%A8%D9%8A%D8%AF%D9%8A%D8%A7%3A%D8%AF%D9%84%D9%8A%D9%84_%D8%A7%D9%84%D8%A3%D8%B3%D9%84%D9%88%D8%A8&type=revision&diff=17231844&oldid=16952006
Task :
Actually, if someone make a search about an article that contains numerals and words but uses EAN, the article in WAN will not apparear.
As an example : when we make a search for an indian movie called https://en.wikipedia.org/wiki/Love_Story_2050 in Arabic wikipedia with EAN, and may be the problem is in other sister projects, the article doesn't appear in the search results.
https://ar.wikipedia.org/w/index.php?search=%D9%82%D8%B5%D8%A9+%D8%AD%D8%A8+%D9%A2%D9%A0%D9%A5%D9%A0+%28%D9%81%D9%8A%D9%84%D9%85+%D9%87%D9%86%D8%AF%D9%8A%29&title=%D8%AE%D8%A7%D8%B5%3A%D8%A8%D8%AD%D8%AB&go=%D8%A7%D8%B0%D9%87%D8%A8
Even in the article about the movie really exist but with WAN.
https://ar.wikipedia.org/wiki/%D9%82%D8%B5%D8%A9_%D8%AD%D8%A8_2050_%28%D9%81%D9%8A%D9%84%D9%85_%D9%87%D9%86%D8%AF%D9%8A%29