From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#60467: 30.0.50; primitive-undo: Changes to be undone by function different from announced Date: Wed, 04 Jan 2023 16:36:01 +0200 Message-ID: <83mt6yz7se.fsf@gnu.org> References: <87o7ri74qv.fsf@localhost> <9bc9c69ac20a37ded741@heytings.org> <9bc9c69ac282c0148962@heytings.org> <87h6x9mgdv.fsf@localhost> <838rij23by.fsf@gnu.org> <83zgazznau.fsf@gnu.org> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="16414"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 60467@debbugs.gnu.org, acm@muc.de, yantar92@posteo.net, monnier@iro.umontreal.ca To: Gregory Heytings Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Wed Jan 04 15:36:14 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 1pD4sI-0003zr-Cy for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 04 Jan 2023 15:36:14 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pD4sC-0007qg-Ev; Wed, 04 Jan 2023 09:36:08 -0500 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 1pD4s8-0007pA-0o for bug-gnu-emacs@gnu.org; Wed, 04 Jan 2023 09:36:04 -0500 Original-Received: from debbugs.gnu.org ([209.51.188.43]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1pD4s7-0000Yw-4q for bug-gnu-emacs@gnu.org; Wed, 04 Jan 2023 09:36:03 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1pD4s7-0005Zi-0x for bug-gnu-emacs@gnu.org; Wed, 04 Jan 2023 09:36:03 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Wed, 04 Jan 2023 14:36:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 60467 X-GNU-PR-Package: emacs Original-Received: via spool by 60467-submit@debbugs.gnu.org id=B60467.167284295921414 (code B ref 60467); Wed, 04 Jan 2023 14:36:02 +0000 Original-Received: (at 60467) by debbugs.gnu.org; 4 Jan 2023 14:35:59 +0000 Original-Received: from localhost ([127.0.0.1]:48009 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1pD4s2-0005ZJ-Lz for submit@debbugs.gnu.org; Wed, 04 Jan 2023 09:35:59 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:49162) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1pD4s1-0005Z0-1D for 60467@debbugs.gnu.org; Wed, 04 Jan 2023 09:35:57 -0500 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pD4rt-0000SJ-JJ; Wed, 04 Jan 2023 09:35:49 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=AiYO8Lxg45V4cthxUA/M3ydrXE6pXXPNnf27Mrh9X84=; b=auYz5JKsciG5 +V8R3no5WA52T6ojNbsj9/78Csz40aOEO9g7/oM8XybhVPoNgfSLMH38FEiJdmKwPADAMXvh2W7wV twZPBaqB66En6VmD6yr/jQGktE2Rrlfnmpzzrftt8St+yh0AKG+ACjowpxe6Gtv1UuiWypmR+LWmo yUEFm+j/Hds1aabqL8fxp3fUh+xp8sbSL+qKLSC+5PCP/s5T6kA06YLJTeZOWpHVmcpwQ2OzZer6T dl7nijGQrh40jcvrpHEe0Pz09KthS1N7GLKHe0a//X/wyECZLF7ICxMKQw7wV9+s9ye5CLDvdSMzR +A95/FXb/rHozj6IrujvxA==; Original-Received: from [87.69.77.57] (helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pD4rt-0000pX-3I; Wed, 04 Jan 2023 09:35:49 -0500 In-Reply-To: (message from Gregory Heytings on Wed, 04 Jan 2023 09:24:09 +0000) 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:252478 Archived-At: > Date: Wed, 04 Jan 2023 09:24:09 +0000 > From: Gregory Heytings > cc: 60467@debbugs.gnu.org, Alan Mackenzie , > Eli Zaretskii , yantar92@posteo.net > > > For the loop currently in `subr.el` I think the (cdr ptr) is OK because > > we use the `setcdr` to truncate the list, so that last cons (whose `cdr` > > may be nil) will be in the list included in the (apply ....) entry. > > > > Indeed, now I see it, and I think (without being 100% sure) that it's OK. > It's yet another obscure point of the original code, though. I hope all these revelations will find their way into comments to this tricky code.