From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Alan Mackenzie Newsgroups: gmane.emacs.bugs Subject: bug#65051: internal_equal manipulates symbols with position without checking symbols-with-pos-enabled. Date: Fri, 11 Aug 2023 10:42:10 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="26293"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 65051@debbugs.gnu.org, Stefan Monnier To: Dmitry Gutov Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Fri Aug 11 12:43:21 2023 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 1qUPc0-0006iH-V8 for geb-bug-gnu-emacs@m.gmane-mx.org; Fri, 11 Aug 2023 12:43:20 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qUPbl-0000zi-Cc; Fri, 11 Aug 2023 06:43:05 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qUPbj-0000za-5P for bug-gnu-emacs@gnu.org; Fri, 11 Aug 2023 06:43:03 -0400 Original-Received: from debbugs.gnu.org ([2001:470:142:5::43]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1qUPbi-0001x3-Lc for bug-gnu-emacs@gnu.org; Fri, 11 Aug 2023 06:43:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1qUPbi-0000Bs-Hd for bug-gnu-emacs@gnu.org; Fri, 11 Aug 2023 06:43:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Alan Mackenzie Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 11 Aug 2023 10:43:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 65051 X-GNU-PR-Package: emacs Original-Received: via spool by 65051-submit@debbugs.gnu.org id=B65051.1691750545686 (code B ref 65051); Fri, 11 Aug 2023 10:43:02 +0000 Original-Received: (at 65051) by debbugs.gnu.org; 11 Aug 2023 10:42:25 +0000 Original-Received: from localhost ([127.0.0.1]:44994 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1qUPb6-0000Az-Ob for submit@debbugs.gnu.org; Fri, 11 Aug 2023 06:42:24 -0400 Original-Received: from mx3.muc.de ([193.149.48.5]:61233) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1qUPb0-0000Ag-8X for 65051@debbugs.gnu.org; Fri, 11 Aug 2023 06:42:22 -0400 Original-Received: (qmail 78689 invoked by uid 3782); 11 Aug 2023 12:42:11 +0200 Original-Received: from acm.muc.de (p4fe151b9.dip0.t-ipconnect.de [79.225.81.185]) (using STARTTLS) by colin.muc.de (tmda-ofmipd) with ESMTP; Fri, 11 Aug 2023 12:42:10 +0200 Original-Received: (qmail 4848 invoked by uid 1000); 11 Aug 2023 10:42:10 -0000 Content-Disposition: inline In-Reply-To: X-Submission-Agent: TMDA/1.3.x (Ph3nix) X-Primary-Address: acm@muc.de 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-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.bugs:267203 Archived-At: Hello, Dmitry. On Fri, Aug 11, 2023 at 03:51:09 +0300, Dmitry Gutov wrote: > On 08/08/2023 18:33, Alan Mackenzie wrote: > >> So I'm still wondering why you think it's a bug. > > Because it violates the definition and basic understanding of equal. > > It's a special case when no special case is needed. > Does 'equal'-ity of strings with and without text properties (or with > different text properties) violate these as well? Maybe, maybe not. It depends on whether you consider the text properties on a string (or buffer portion) an essential part of the string or not. I think it was possibly a design error to have text properties conceptually as a part of a string/buffer rather than something associated with it, like an overlay. The fact that equal ignores these properties supports this view. -- Alan Mackenzie (Nuremberg, Germany).