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Re: Greek end sigmas cannot be up/down cased

From: Richard Stallman
Subject: Re: Greek end sigmas cannot be up/down cased
Date: Mon, 29 Nov 2004 01:12:32 -0500

    In Greek, downcase-word and upcase-word do not work correctly for
    the end sigma.

This is the absence of a feature, rather than a bug.  The existing
case table feature simply has no way of recording the idea that a
single upper-case character corresponds to two different lower-case
characters depending on position in the word.  To make this case
work right, it would be necessary to define a way to represent
this situation.

There are other problems with the current code.  For instance, it
can't handle the German lower-case s that corresponds to SS in upper

Would someone like to volunteer to study the situation and find all
the cases that our current code doesn't handle?  We shouldn't
install such a change before the coming release, but you could
work on what we should do after the release.

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