From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Mattias =?UTF-8?Q?Engdeg=C3=A5rd?= Newsgroups: gmane.emacs.bugs Subject: bug#40972: 27.0.91; assoc TESTFN's args reversed? Date: Wed, 9 Sep 2020 16:46:43 +0200 Message-ID: <25BD6B62-B196-44D5-8BB0-16F5A83D5922@acm.org> References: <47D61E6B43780AC31D0B86@gmail.com> Mime-Version: 1.0 (Mac OS X Mail 12.4 \(3445.104.15\)) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="22661"; mail-complaints-to="usenet@ciao.gmane.io" Cc: Michael Heerdegen , 40972@debbugs.gnu.org, Shigeru Fukaya To: Stefan Kangas Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Wed Sep 09 16:47:17 2020 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1kG1NT-0005jr-Uw for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 09 Sep 2020 16:47:15 +0200 Original-Received: from localhost ([::1]:51162 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kG1NT-0004Iy-16 for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 09 Sep 2020 10:47:15 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:57070) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kG1NG-0004HO-Gv for bug-gnu-emacs@gnu.org; Wed, 09 Sep 2020 10:47:02 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:49562) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1kG1NG-0007dQ-7l for bug-gnu-emacs@gnu.org; Wed, 09 Sep 2020 10:47:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1kG1NG-0002HA-6c for bug-gnu-emacs@gnu.org; Wed, 09 Sep 2020 10:47:02 -0400 X-Loop: help-debbugs@gnu.org In-Reply-To: <47D61E6B43780AC31D0B86@gmail.com> Resent-From: Mattias =?UTF-8?Q?Engdeg=C3=A5rd?= Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Wed, 09 Sep 2020 14:47:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 40972 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: wontfix notabug Original-Received: via spool by 40972-submit@debbugs.gnu.org id=B40972.15996628138722 (code B ref 40972); Wed, 09 Sep 2020 14:47:02 +0000 Original-Received: (at 40972) by debbugs.gnu.org; 9 Sep 2020 14:46:53 +0000 Original-Received: from localhost ([127.0.0.1]:32872 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1kG1N7-0002Gc-Eu for submit@debbugs.gnu.org; Wed, 09 Sep 2020 10:46:53 -0400 Original-Received: from mail78c50.megamailservers.eu ([91.136.10.88]:45484 helo=mail70c50.megamailservers.eu) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1kG1N2-0002GO-QQ for 40972@debbugs.gnu.org; Wed, 09 Sep 2020 10:46:52 -0400 X-Authenticated-User: mattiase@bredband.net DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=megamailservers.eu; s=maildub; t=1599662806; bh=eaHZOLXdUe25KxiNWQYYzuWILTxSOH3dEAvTryVd4do=; h=From:Subject:Date:Cc:To:From; b=dwrenDMj68cklrdFMe38WEh+dc4S6EDfexv4hiRT2p29iSFh5O78tTGkxaGuMwNnG PwrUH1T145dFIM06fWaM3fQgqw+fAfsFhYYA+VNTB+E3KCQxuZKvK7S3CmY0D+b3k9 Y2P4/caFDFf6RytQIXNeIUasvzT8iNPpuL/hlRxI= Feedback-ID: mattiase@acm.or Original-Received: from [192.168.0.4] (c188-150-171-71.bredband.comhem.se [188.150.171.71]) (authenticated bits=0) by mail70c50.megamailservers.eu (8.14.9/8.13.1) with ESMTP id 089EkhU0010860; Wed, 9 Sep 2020 14:46:45 +0000 X-Mailer: Apple Mail (2.3445.104.15) X-CTCH-RefID: str=0001.0A782F26.5F58EAD6.00B7, ss=1, re=0.000, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0 X-CTCH-VOD: Unknown X-CTCH-Spam: Unknown X-CTCH-Score: 0.000 X-CTCH-Flags: 0 X-CTCH-ScoreCust: 0.000 X-CSC: 0 X-CHA: v=2.3 cv=OKBZIhSB c=1 sm=1 tr=0 a=SF+I6pRkHZhrawxbOkkvaA==:117 a=SF+I6pRkHZhrawxbOkkvaA==:17 a=kj9zAlcOel0A:10 a=M51BFTxLslgA:10 a=sysunY3CjBJjrNbO8FcA:9 a=CjuIK1q_8ugA:10 X-Origin-Country: SE X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list 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-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:187663 Archived-At: > As Michael points out, the equality operation is symmetric and = therefore by definition the order does not matter. We therefore cannot = say if X=3DY or Y=3DX is "more correct": they are equivalent. >=20 > In any case, I think it will cause more problems to switch the = argument order at this point, since there might be code out there that = relies on this (undocumented) behavior. So I'm closing this bug.=20 It's quite possible that the current argument order was intended but = never really documented. It's occasionally exploited (see = image-converter--filter-formats). The asymmetry is stated more = explicitly in the doc string and manual entry for assoc-default. Closing = the bug is probably wisest.