Rewrite of Data.Char library?

Colin Paul Adams colin at
Fri Oct 23 01:59:50 EDT 2009

>>>>> "Ahn" == Ahn, Ki Yung <kyagrd at> writes:

    Ahn> Just a follow-up to add, and my suggestions.  Lowercase and
    Ahn> Uppercase problem seems not to be solvable, since in some
    Ahn> languages like German sz doesn't have a good definition for
    Ahn> an uppercase letter.

You just follow the Unicode default foldings.

Note that these foldings are not inverses of each other - intuition is
misplaced here.
Colin Adams
Preston Lancashire

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