GNU bug report logs - #16731
24.3.50; Latin small letter sharp s is not considered lower-case

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Package: emacs;

Reported by: Jorgen Schaefer <forcer <at> forcix.cx>

Date: Wed, 12 Feb 2014 17:31:02 UTC

Severity: normal

Merged with 10576

Found in version 24.3.50

Fixed in version 28.1

Done: Lars Ingebrigtsen <larsi <at> gnus.org>

Bug is archived. No further changes may be made.

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Message #13 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Andreas Röhler <andreas.roehler <at> easy-emacs.de>
To: bug-gnu-emacs <at> gnu.org
Subject: Re: bug#16731: 24.3.50; Latin small letter sharp s is not considered
 lower-case
Date: Wed, 12 Feb 2014 20:31:20 +0100

Am 12.02.2014 18:55, schrieb Glenn Morris:
> Jorgen Schaefer wrote:
>
>> Not sure why it would not be considered a lower-case letter. Umlauts
>> like ä, ö and ü are matched correctly.
>
> See http://debbugs.gnu.org/10576
>
> (I have no idea whether this is an Emacs bug or not.)
>
>
>
>

IMO the answer given at link is not valid. Indeed the implementation in buffer.h does check --&& upcase1 (c)-- and expects a result, i.e. ignores the fact, some characters 
might not have an upcase variant.

When seeing there is a downcase-table, the check probably should be done against this.
This bug report was last modified 3 years and 311 days ago.

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