From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Lars Ingebrigtsen Newsgroups: gmane.emacs.bugs Subject: bug#19790: [PATCH] destructive splicing in backquote Date: Tue, 25 Jun 2019 19:59:30 +0200 Message-ID: References: <87a90r35o9.fsf@panthera.terpri.org> <87ziurr8dw.fsf@gnus.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="141849"; mail-complaints-to="usenet@blaine.gmane.org" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux) Cc: 19790@debbugs.gnu.org To: Robin Templeton Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Tue Jun 25 20:03:25 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 1hfpmv-000akL-DL for geb-bug-gnu-emacs@m.gmane.org; Tue, 25 Jun 2019 20:03:25 +0200 Original-Received: from localhost ([::1]:34418 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hfpmu-0004D8-9i for geb-bug-gnu-emacs@m.gmane.org; Tue, 25 Jun 2019 14:03:24 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:43376) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hfpjf-0002BB-Sj for bug-gnu-emacs@gnu.org; Tue, 25 Jun 2019 14:00:04 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hfpje-0000Ii-NJ for bug-gnu-emacs@gnu.org; Tue, 25 Jun 2019 14:00:03 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:48199) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1hfpje-0000Ia-JL for bug-gnu-emacs@gnu.org; Tue, 25 Jun 2019 14:00:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1hfpje-0002RU-GL for bug-gnu-emacs@gnu.org; Tue, 25 Jun 2019 14:00:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Lars Ingebrigtsen Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Tue, 25 Jun 2019 18:00:02 +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=B19790.15614855779316 (code B ref 19790); Tue, 25 Jun 2019 18:00:02 +0000 Original-Received: (at 19790) by debbugs.gnu.org; 25 Jun 2019 17:59:37 +0000 Original-Received: from localhost ([127.0.0.1]:33510 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1hfpjE-0002Q9-VQ for submit@debbugs.gnu.org; Tue, 25 Jun 2019 13:59:37 -0400 Original-Received: from quimby.gnus.org ([80.91.231.51]:53624) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1hfpjD-0002Px-9S for 19790@debbugs.gnu.org; Tue, 25 Jun 2019 13:59:35 -0400 Original-Received: from cm-84.212.202.86.getinternet.no ([84.212.202.86] helo=stories) by quimby.gnus.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1hfpj9-0002ge-07; Tue, 25 Jun 2019 19:59:34 +0200 In-Reply-To: <87ziurr8dw.fsf@gnus.org> (Lars Ingebrigtsen's message of "Tue, 23 Feb 2016 22:08:59 +1100") 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:161410 Archived-At: Lars Ingebrigtsen writes: > Robin Templeton writes: > >> Common Lisp and MACLISP define comma-dot syntax for destructive splicing >> in backquote expressions. The Elisp reader reads ",.x" as "(\,\. x)" >> (like ",@"), but the resulting forms are not processed by the backquote >> library. A patch follows that adds CL-compatible comma-dot support. >> >> Originally reported by at Artur Malabarba in >> . > > 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... It still is. Anybody object to removing it? And where is it even defined? -- (domestic pets only, the antidote for overdose, milk.) bloggy blog: http://lars.ingebrigtsen.no