Thread:Project:Support desk/Is there any updated documntation about the actual implementation of **utf-8 / Unicode truncation** in MediaWiki?/reply

I don't know what unicode truncation is....

If you mean just truncating strings that have multi-byte characters, and making sure you don't truncate in the middle of a character, see Language::truncate (I was going to link directly to the docs, but they seem to have totally dissapeared ). There's also a couple of other related functions in the Language class.

Note however, I'm not sure why there would be documentation about this beside standard dev documentation, as its a fairly straightforward thing, which users shouldn't have to care about.