This seems to be feature request for upstream: https://github.com/wikimedia/jquery.ime/tree/master/rules/he

I'm not sure the bug description is clear enough (even for me, as the creator) so I will try to re-describe the issue.
[Originally described in Amir's talk page in hewiki: https://he.wikipedia.org/wiki/%D7%A0%D7%95%D7%A9%D7%90:Sq12w6spwc9wlo3d ]

Some keyboards have geresh character as default in Hebrew, while others use apostrophe character.
To support linking and searching with letter agnostic behavior (so users with different keyboards can enjoy similar behavior) there are different approaches to solve it:

1. Client side - Fix IME to use geresh/apostrophe. This is simple, but will not work for most users, as IME JS isn't usually used but native keyboard.
2. Bot - For each page with Hebrew title containing apostrophe character, create a redirect from the same page title, but with geresh character - While this can be automated with bot, it will create a lot of redirect pages and requires regular running of such bot
3. Mediawiki core / backend - (ab)use Language.php normalize/normalizeForSearch/convertForSearchResult and replace geresh with apostrophe - this means that pages containing geresh (not apostrophe) in their title will be inaccessible , however, this is infrastructure fix that doesn't require maintenance. As far as I checked in hewiki, there are no pages containing geresh in their title, so it is theoretical limitation.

Though 3 is the most "dangerous" (as it adds new limitation to valid titles) I think it is the most nicely solution. Any objection? other ideas?