In reply to Otto.

Yes. Cockney is a real thing. It is the dialect of British English as spoken by a real Cockney person.
So what then is wp_cockneyreplace? Some kind of final solution for East end Londoners? And people consider that $pee is non-inclusive.
I looked at what the function does, thinking purely of the language aspect - and reflecting that it must be pretty clever to replace, say, plates by feet. That would be dealing with Cockney.
But no, it doesn't.
What it's actually doing is dealing with contractions and more specifically contractions with a leading apostrophe.
wp_contractionsreplace would describe what it does.