> Actually "asdf??我抗我技忘????".gsub!(/\w/u,'') returns "" on linux so the 
> problem is from the windows package.
> 
> you can use "asdf??我抗我技忘????".gsub!(/\p{L}/,'') to remove letters thought

If they're the same version then it might be a window bug.  Try it with 
trunk and if it still fails then submit a bug report to the tracker...
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