From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Michael Heerdegen Newsgroups: gmane.emacs.bugs Subject: bug#23902: 25.1.50; Strange warning on string-collate-equalp's docstring Date: Wed, 06 Jul 2016 17:08:25 +0200 Message-ID: <87bn2aolcm.fsf@web.de> References: <87vb0jeo56.fsf@telefonica.net> <831t36omxx.fsf@gnu.org> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1467817791 17131 80.91.229.3 (6 Jul 2016 15:09:51 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 6 Jul 2016 15:09:51 +0000 (UTC) Cc: =?UTF-8?Q?=C3=93scar?= Fuentes , 23902@debbugs.gnu.org To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Wed Jul 06 17:09:39 2016 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1bKoSI-0007N9-IR for geb-bug-gnu-emacs@m.gmane.org; Wed, 06 Jul 2016 17:09:38 +0200 Original-Received: from localhost ([::1]:34085 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bKoSH-0006L5-SB for geb-bug-gnu-emacs@m.gmane.org; Wed, 06 Jul 2016 11:09:37 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:55244) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bKoRn-00064N-1X for bug-gnu-emacs@gnu.org; Wed, 06 Jul 2016 11:09:16 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bKoRi-000677-4v for bug-gnu-emacs@gnu.org; Wed, 06 Jul 2016 11:09:05 -0400 Original-Received: from debbugs.gnu.org ([208.118.235.43]:55563) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bKoRi-000672-1Q for bug-gnu-emacs@gnu.org; Wed, 06 Jul 2016 11:09:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1bKoRh-000396-Te for bug-gnu-emacs@gnu.org; Wed, 06 Jul 2016 11:09:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Michael Heerdegen Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Wed, 06 Jul 2016 15:09:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 23902 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 23902-submit@debbugs.gnu.org id=B23902.146781772412047 (code B ref 23902); Wed, 06 Jul 2016 15:09:01 +0000 Original-Received: (at 23902) by debbugs.gnu.org; 6 Jul 2016 15:08:44 +0000 Original-Received: from localhost ([127.0.0.1]:39664 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bKoRM-00038A-Cp for submit@debbugs.gnu.org; Wed, 06 Jul 2016 11:08:44 -0400 Original-Received: from mout.web.de ([217.72.192.78]:63573) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bKoRG-00037s-QG for 23902@debbugs.gnu.org; Wed, 06 Jul 2016 11:08:38 -0400 Original-Received: from drachen.dragon ([88.67.73.210]) by smtp.web.de (mrweb101) with ESMTPSA (Nemesis) id 0Lb1wz-1bitpz25RR-00kcQn; Wed, 06 Jul 2016 17:08:26 +0200 In-Reply-To: <831t36omxx.fsf@gnu.org> (Eli Zaretskii's message of "Wed, 06 Jul 2016 17:34:02 +0300") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.0.95 (gnu/linux) X-Provags-ID: V03:K0:gBMgUQ0HxvcZDXRMIhd/IiDYYrCOcs6xTjPi4LkGsahAwRAkQo7 pG7dpWTjusqilKmt4zHYTkt27RwsyRr+AWpeufMJsdkmRv3BPUi5LG9H91KbMOJmKehnWk0 m6Te/qFtzbmvixhoqg+1RN1q5HBgWcIC/Cb/mb6qKBkQ0KtlNVtVFouAXFszdMEC50L5mxW zsU8PurCg3ReW5xXkm7GA== X-UI-Out-Filterresults: notjunk:1;V01:K0:4sQYvB3t8A8=:5WAWBC7MtZM+cKRDy8FlAm 7ne8RhMtep2FV1UxBNpnbwl+cjZHPetqZZONFJ9jCYY4Dj61vdWsPAz9KzI5DAnrQO1sW8p+u MJLfprXr5j2g8iiPJyIcC08R8Wil4jLmN33A8mv2R6BCKhMbAniUbcMIMZFcJUDeajArbEkaY 330pp3zVQe3c5fnny71dfvDJ0sXP3kdjjjSz4Lfy0/3A2wxC1TxUz5gE8VhL8MzEICuVq3qXQ Z2RshbMKdgVHxwd5zki77ol6oXy2/qhdmfCSUROAlxGHoKJkMYa8y2nigmpkVw8gxvpZhWwd/ UZ8HOHb8e6AWuspKCVvhuqbQs05OJJQ6aMK29FAvQxrhPUXPCFTvw3QDwltdoICPio27veY4B lRippECihCVGcSblPas0BWffPxQTw0SSbzt5rhk/WfSYTaJOlPb6TfAQ7mD/xAU3b4m39qmMT 71YFP/v2YukUcfD/4jhCh+7R+IyFVZl5OtfqUxfoUwr4MogTiURbR9ibVcNfIXD9zcwnL6MhY IHEG3dcKgggNmiIL0QFnh7rr+HoCqFpKomvhNdFE5OY6/Y1AOVRQLSHb6DEXJu+pb+e3ozZ9l 44aUV/fNDH71yXcvq28uD8u/Kruc8eQTnYKBfq3jWTr5Ymszgko4S95+Z1rZuOpEJpdhm3nES ebrBCXLEe48Zc10x9+YZnOBZyk4HtOfKv/2aIEcm8ow4ujp1m175Nn+3enGkLDiiWImqKVFwU H3rCr3jdJ3ywV6O4vXyLoowCL7cnJI+teGPf6TxMlEXRt9pgl0zQi6vG2rDkWaywIK815oIE X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 208.118.235.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.org gmane.emacs.bugs:120495 Archived-At: Eli Zaretskii writes: > As with any such notes in doc strings, we warn about popular mistakes > that people make frequently. Trying to compare file names using this > function is such a mistake. Any string that is actually a kind of > handle to a system object, for which the system itself uses binary > comparison, will do as an example of such a mistake, but doing that > with file names is a common enough example to warrant mentioning. I also have trouble to understand. How can I compare file names modulo collate-equality, if not with this function? > > And then, how one is supposed to use an > > equality predicate for sorting? (We have string-collate-lessp for that) > > A sorting algorithm can have its own ideas what to do when > string-collate-lessp returns zero. But we are speaking about the docstring of `string-collate-equal-p'. It is not clear here how it (as an equivalence predicate) could be useful for sorting at all. Michael.