check Wiki Admin section about this. That covers the ((Link)) kind of links, but not WikiWords if that's what you want. WikiWords parsing is not needed in some non-latin languages since they don't have "case", but I agree maybe something can be done about cyrillic.
Although I'm far from being a PHP master, it seems to me that if offers functions for latin languages only, and it may be harder to introduce support for other cased languages. Tell us how other Wikis do, if you can...?