From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#19790: [PATCH] destructive splicing in backquote Date: Sat, 14 Sep 2019 10:15:24 +0300 Message-ID: <83o8znz6ur.fsf@gnu.org> References: <87a90r35o9.fsf@panthera.terpri.org> Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="248929"; mail-complaints-to="usenet@blaine.gmane.org" Cc: robin@terpri.org, 19790@debbugs.gnu.org, larsi@gnus.org, michael_heerdegen@web.de To: Stefan Kangas , Stefan Monnier Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sat Sep 14 09:16:14 2019 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1i92I0-0012dI-DU for geb-bug-gnu-emacs@m.gmane.org; Sat, 14 Sep 2019 09:16:12 +0200 Original-Received: from localhost ([::1]:48836 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1i92Hy-0006l1-Mx for geb-bug-gnu-emacs@m.gmane.org; Sat, 14 Sep 2019 03:16:10 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:55181) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1i92Hr-0006iL-0N for bug-gnu-emacs@gnu.org; Sat, 14 Sep 2019 03:16:03 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1i92Hp-0002s3-Sk for bug-gnu-emacs@gnu.org; Sat, 14 Sep 2019 03:16:02 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:36980) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1i92Hp-0002rr-Q2 for bug-gnu-emacs@gnu.org; Sat, 14 Sep 2019 03:16:01 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1i92Hp-0006fA-Jy for bug-gnu-emacs@gnu.org; Sat, 14 Sep 2019 03:16:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sat, 14 Sep 2019 07:16:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 19790 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: patch Original-Received: via spool by 19790-submit@debbugs.gnu.org id=B19790.156844531825559 (code B ref 19790); Sat, 14 Sep 2019 07:16:01 +0000 Original-Received: (at 19790) by debbugs.gnu.org; 14 Sep 2019 07:15:18 +0000 Original-Received: from localhost ([127.0.0.1]:45801 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1i92H7-0006eB-ES for submit@debbugs.gnu.org; Sat, 14 Sep 2019 03:15:18 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:46599) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1i92H5-0006dt-AV for 19790@debbugs.gnu.org; Sat, 14 Sep 2019 03:15:16 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:48500) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1i92Gz-0002MN-Gp; Sat, 14 Sep 2019 03:15:09 -0400 Original-Received: from [176.228.60.248] (port=2205 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1i92Gx-0003mP-RJ; Sat, 14 Sep 2019 03:15:08 -0400 In-reply-to: (message from Stefan Kangas on Sat, 14 Sep 2019 01:59:30 +0200) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] 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: 209.51.188.43 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:166426 Archived-At: > From: Stefan Kangas > Date: Sat, 14 Sep 2019 01:59:30 +0200 > Cc: Robin Templeton , 19790@debbugs.gnu.org, > Michael Heerdegen > > > I think the conclusion to the discussion was that we do not want to > > support the ,. operation in Emacs Lisp. > > > > (setq .foo 1) > > > > `((,.foo)) > > => (((\,\. foo))) > > > > So we should remove this feature completely, because that's obviously a > > bug... > > Thanks to Michael Heerdegen's pointers, I could come up with a patch. > Would something like the attached do the job? It simply removes this > feature and adds a test. Adding Stefan who was involved in the discussion back then. I have no opinion about the change, but I think this should be in NEWS. Thanks.