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> No, of course not. But it's pretty easy to write an implementation of ropes
> using tables and the appropriate concat and tostring metamethods.

While we’re talking about ropes and hashing, are there homomorphic
hashing algorithms such that

    Hash( Str1 .. Str2) == Hash( Str1 ) * Hash( Str2 )

where * is some algorithm faster than re-hashing a whole new string?

-- Pierre-Yves