perhaps the version you are using is.
the latest tcl/tk is unicode based

This node talks about problems with perl recognizing utf8 chars. (i think it's for pre 5.6 perl though)

This node talks about potential perl 5.6.0 problems with unicode.

This is a good read about the problems with unicode: Why Unicode Won't Work on the Internet: Linguistic, Political, and Technical Limitations

In reply to Re: Unicode in Tk by bastard
in thread Unicode in Tk by John M. Dlugosz

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