In <200205080243(_dot_)g482h2g27201(_at_)astro(_dot_)cs(_dot_)utk(_dot_)edu>
Keith Moore <moore(_at_)cs(_dot_)utk(_dot_)edu> writes:
well for starters, how about the reason that Unicode has multiple
representations for characters in the first place - because they wanted
to support invertable translation to and from legacy character sets without
information loss, and also because they combined several character sets
which had some non-null intersections but there were cases where it made
sense to assign different codepoints.
But in fact translations from some arbitrary charset into normalized
Unicode are not invertible.
--
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