Eh, it works at the very least, but the coding is not really stunning. Perhaps only declare variables once? Also, there are some letters you are missing support for (A-ZŠŒŽÀ-ÖØ-ÞŸ).

Now besides the coding: I find that adding a % to the end of the returned value is completely useless. What if I wanted to use this for a caps kicker? I\'d have to use $remove or $left or so.

But in any case, this is a nice example of regex and how it can be used. Perhaps add a .count property to return the total matches (basically without a percentage)? Good luck.