Патч для ROX

Так он, вроде, давно всё понимает.

Он-то понимает, только подсвечивает красненьким, предлагает переименовать в юникоде и ограничивает операции над такими файлами

Вот, нашел:

Why doesn't ROX-Filer provide the option to use my local encoding?

ROX-Filer only supports non-UTF-8 encodings enough to let you rename your files to UTF-8. Although we often get requests to add more support, this is not a useful direction. There are a huge number of places where support must be added, and even if you got the whole filer converted, you'd need to convert all your other applications too. And, at the end of all this work converting everything to support your legacy encoding, you're just back to the bad old pre-UTF-8 days, where you can't exchange files with users in a different locale, can't have files with different alphabets on the same system, and you have to keep track of the encodings whereever you go, or the names become unreadable.

So, just convert to UTF-8. It's easier in the long run!