GNU bug report logs - #18051
24.3.92; ls-lisp: Sorting; make ls-lisp-string-lessp a normal function?

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Message #143 received at 18051 <at> debbugs.gnu.org (full text, mbox):

From: Michael Albinus <michael.albinus <at> gmx.de>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: michael_heerdegen <at> web.de, 18051 <at> debbugs.gnu.org
Subject: Re: bug#18051: 24.3.92; ls-lisp: Sorting;
 make ls-lisp-string-lessp a normal function?
Date: Sat, 23 Aug 2014 22:32:00 +0200

[Message part 1 (text/plain, inline)]

Eli Zaretskii <eliz <at> gnu.org> writes:

>> > Btw, I wonder whether we should have a way to pass the locale string
>> > explicitly, instead of relying on $LC_COLLATE.
>> 
>> We could add an optional argument to string-collate-*. But this would
>> break signature equivalence with string-lessp and string-equal,
>> respectively.
>> 
>> Or we could introduce a global var, which shall be let-bound to the
>> locale string.
>
> Or have a new optional argument in string-lessp etc., or introduce a
> new set of APIs which will accept a locale, and have string-lessp
> etc. call them with that argument nil.

An optional argument to string-lessp could be inconvenient. IMHO, the
most important use-case of string-lessp is being a PREDICATE of
sort. This does not support optional arguments.

>> This raises the question, whether we shall use also my first setlocale
>> approach in case of uselocale absence?
>
> I think so, yes.

Extended patch appended.

Best regards, Michael.

[collate-patch (text/x-patch, attachment)]

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