From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Lars Ingebrigtsen Newsgroups: gmane.emacs.bugs Subject: bug#19790: [PATCH] destructive splicing in backquote Date: Tue, 23 Feb 2016 22:08:59 +1100 Message-ID: <87ziurr8dw.fsf@gnus.org> References: <87a90r35o9.fsf@panthera.terpri.org> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1456225907 27986 80.91.229.3 (23 Feb 2016 11:11:47 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 23 Feb 2016 11:11:47 +0000 (UTC) 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 Feb 23 12:11:33 2016 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1aYAr6-00033E-9i for geb-bug-gnu-emacs@m.gmane.org; Tue, 23 Feb 2016 12:10:12 +0100 Original-Received: from localhost ([::1]:56100 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aYAr5-0005BD-Hh for geb-bug-gnu-emacs@m.gmane.org; Tue, 23 Feb 2016 06:10:11 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:60685) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aYAr1-00059O-Uh for bug-gnu-emacs@gnu.org; Tue, 23 Feb 2016 06:10:09 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aYAqw-0006MS-AV for bug-gnu-emacs@gnu.org; Tue, 23 Feb 2016 06:10:07 -0500 Original-Received: from debbugs.gnu.org ([208.118.235.43]:42174) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aYAqw-0006MO-7R for bug-gnu-emacs@gnu.org; Tue, 23 Feb 2016 06:10:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84) (envelope-from ) id 1aYAqw-0001M3-16 for bug-gnu-emacs@gnu.org; Tue, 23 Feb 2016 06:10:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Lars Ingebrigtsen Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Tue, 23 Feb 2016 11:10:01 +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=B19790.14562257805160 (code B ref 19790); Tue, 23 Feb 2016 11:10:01 +0000 Original-Received: (at 19790) by debbugs.gnu.org; 23 Feb 2016 11:09:40 +0000 Original-Received: from localhost ([127.0.0.1]:39298 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84) (envelope-from ) id 1aYAqa-0001LA-0T for submit@debbugs.gnu.org; Tue, 23 Feb 2016 06:09:40 -0500 Original-Received: from hermes.netfonds.no ([80.91.224.195]:52786) by debbugs.gnu.org with esmtp (Exim 4.84) (envelope-from ) id 1aYAqW-0001Kx-AO for 19790@debbugs.gnu.org; Tue, 23 Feb 2016 06:09:38 -0500 Original-Received: from cpe-60-225-211-161.nsw.bigpond.net.au ([60.225.211.161] helo=mouse) by hermes.netfonds.no with esmtpsa (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.72) (envelope-from ) id 1aYAq4-0004Av-FX; Tue, 23 Feb 2016 12:09:09 +0100 In-Reply-To: <87a90r35o9.fsf@panthera.terpri.org> (Robin Templeton's message of "Fri, 06 Feb 2015 01:39:02 -0500") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.1.50 (gnu/linux) X-MailScanner-ID: 1aYAq4-0004Av-FX MailScanner-NULL-Check: 1456830549.46697@0XN4m9onsyaVuC8vNnAOog 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: 208.118.235.43 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-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:113565 Archived-At: 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... -- (domestic pets only, the antidote for overdose, milk.) bloggy blog: http://lars.ingebrigtsen.no