Thank you, that's very useful as well. In what sense is using length to count Unicode characters a bug waiting to happen, though? Now I'll admit I've just learned first hand that this is indeed dangerous territory to tread, but the perldoc entry for length (which I checked beforehand to make sure it wouldn't count bytes -- hence my confusion) says:
Like all Perl character operations, length() normally deals in logical characters, not physical bytes. For how many bytes a string encoded as UTF-8 would take up, use length(Encode::encode_utf8(EXPR)) (you'll have to use Encode first).
So if used right, it should work, shouldn't it? Do you have any specific languages or complex data in mind with which it might fail?
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