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Daniel Quinlan writes:
> Just to play devil's advocate, I have one other question: would it be
> cheaper and safer to simply run tests for certain languages using
> multiple character sets?
> 
> Cheaper: is the cost really cheaper to convert?
> 
> Safer: what if you guess wrong?  what if the character set is hard to
> determine correctly (intentially mixed-up, binary inserted,
> half-and-half, jumbled character sets, etc.).

FWIW, one spammer was doing this deliberately a while ago -- mailing
entirely in ASCII characters, but declaring the charset as GB2312 (iirc),
and including the odd chinese character towards the end of the mail.
Since the latter charset includes the entirety of ASCII 0x00-0x7f, that
worked for ASCII spam delivery.

- --j.
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