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bug#10576: Subject: 23.4; char class [:lower:] misses latin small letter


From: Andreas Schwab
Subject: bug#10576: Subject: 23.4; char class [:lower:] misses latin small letter sharp s
Date: Sun, 22 Jan 2012 15:04:38 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.0.92 (gnu/linux)

Andreas Röhler <address@hidden> writes:

> evaluating the form below results in "0", i.e. no move
>
> (skip-chars-forward "[:lower:]")ß
>
> AFAIU [:lower:] doesn't recognise that char

That's because ?ß has no upper case, so lowercasep in src/buffer.h
return 0.

(Actually in Unicode, ?ß does have a capital variant, ?ẞ, but while
lowercasing ?ẞ maps to ?ß, uppercasing ?ß actually maps to "SS".)

Andreas.

-- 
Andreas Schwab, address@hidden
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