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

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From: Andreas Röhler <andreas.roehler <at> easy-emacs.de>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 16731 <at> debbugs.gnu.org
Subject: bug#16731: 24.3.50; Latin small letter sharp s is not considered lower-case
Date: Wed, 12 Feb 2014 21:10:57 +0100

Am 12.02.2014 20:49, schrieb Eli Zaretskii:
>> Date: Wed, 12 Feb 2014 20:31:20 +0100
>> From: Andreas Röhler <andreas.roehler <at> easy-emacs.de>
>>
>>> 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.
>
> It accurately describes what happens in the code, so it's definitely
> valid.
>
>> When seeing there is a downcase-table, the check probably should be done against this.
>
> Not sure what you mean by that, please elaborate.
>
>

See buffer.h
IIUC the mentioned lowercasep is implemented as !uppercasep (c) && upcase1 (c) != c;
upcase1 (c) must fail, as there is no upcased of this char.

While upcase1 can't succeed, downcase should - if "ß" is a member of downcase_table.

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