From mboxrd@z Thu Jan  1 00:00:00 1970
From: Sebastian =?utf-8?Q?Reu=C3=9Fe?= <seb@wirrsal.net>
Subject: Re: bug: org-table-sort-lines does only case sensitive alphabetical
 sorting
Date: Tue, 17 Jul 2018 08:59:17 +0200
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To: Heikki Lehvaslaiho <heikki.lehvaslaiho@gmail.com>
Cc: emacs-orgmode@gnu.org, Nicolas Goaziou <mail@nicolasgoaziou.fr>


Heikki Lehvaslaiho <heikki.lehvaslaiho@gmail.com> writes:

> x86_64-apple-darwin14.5.0

Looking at the C source of =E2=80=98string-collate-lessp=E2=80=99 (src/fn=
s.c), it looks
like there exists a case where Emacs itself will fall back on
=E2=80=98string-lessp=E2=80=99 even when =E2=80=98string-collate-lessp=E2=
=80=99 is invoked.

    #else  /* !__STDC_ISO_10646__, !WINDOWSNT */
     return Fstring_lessp (s1, s2);
    #endif /* !__STDC_ISO_10646__, !WINDOWSNT */

I can=E2=80=99t tell what the first macro evaluates to on your platform. =
Might
this be the cause?

An indication for whether your Emacs uses the locale at all may be
testing the following (presuming you have the German locale data
installed and compiled):

    (string-collate-lessp "=C3=9F" "ssa" "de_DE.utf-8") ; t
    (string-lessp "=C3=9F" "ssa")                       ; nil

This is based on the German =E2=80=98=C3=9F=E2=80=99 ligature being sorte=
d as if it were
equal to the string =E2=80=98ss=E2=80=99 (you can probably construct some=
thing analogous
using fi_FI). If the first call returns nil, your Emacs isn=E2=80=99t usi=
ng the
locale data at all.

Kind regards,
SR

--=20
Insane cobra split the wood
Trader of the lowland breed
Call a jittney, drive away
In the slipstream we will stay