I don't know what happened there. I didn't notice that the zip file was way too small. Here's a replacement (still called issue2636-20100222.zip).

Unicode script properties are already included, at least those whose definitions at http://www.regular-expressions.info/unicode.html

I haven't notice \X before. I'll have a look at it.

As for \G, .findall performs searches normally, but when using \G it effectively performs contiguous matches only, which can be useful when you need it!