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From: Richard Stallman <rms@gnu.org>
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Subject: Re: re-search bug?
Date: Thu, 03 Feb 2005 14:14:00 -0500
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References: <b9yekfytpjy.fsf@jpl.org> <200502030223.LAA24558@etlken.m17n.org>
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    It seems that the current code in casefiddle.c has a serious
    bug in supporting this kind of case-mapping.

    i <--up/downcase--> I
    DOTLESS-i --upcase-> I
    I-WITH-DOT-ABOVE --downcase-> i

Do you want to debug the serious bug?
If you send me a precise test case, I could try to debug it.