From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.bugs Subject: bug#15538: 24.3; Incorrect Expansion of Nested Backquote Date: Tue, 08 Oct 2013 00:30:45 -0400 Message-ID: References: NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1381206677 10509 80.91.229.3 (8 Oct 2013 04:31:17 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 8 Oct 2013 04:31:17 +0000 (UTC) Cc: 15538@debbugs.gnu.org To: =?UTF-8?Q?=E7=99=BD=E4=BA=95_?= =?UTF-8?Q?=E5=BD=B0?= Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Tue Oct 08 06:31:20 2013 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 1VTOx6-00065Q-8O for geb-bug-gnu-emacs@m.gmane.org; Tue, 08 Oct 2013 06:31:20 +0200 Original-Received: from localhost ([::1]:34582 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VTOx5-0005Dj-Pd for geb-bug-gnu-emacs@m.gmane.org; Tue, 08 Oct 2013 00:31:19 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:57521) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VTOww-0005Dc-0E for bug-gnu-emacs@gnu.org; Tue, 08 Oct 2013 00:31:17 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1VTOwo-000659-O6 for bug-gnu-emacs@gnu.org; Tue, 08 Oct 2013 00:31:09 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:53493) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VTOwo-000655-Kc for bug-gnu-emacs@gnu.org; Tue, 08 Oct 2013 00:31:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1VTOwo-0007OK-1E for bug-gnu-emacs@gnu.org; Tue, 08 Oct 2013 00:31:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Stefan Monnier Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Tue, 08 Oct 2013 04:31:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 15538 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 15538-submit@debbugs.gnu.org id=B15538.138120664828385 (code B ref 15538); Tue, 08 Oct 2013 04:31:01 +0000 Original-Received: (at 15538) by debbugs.gnu.org; 8 Oct 2013 04:30:48 +0000 Original-Received: from localhost ([127.0.0.1]:33553 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1VTOwZ-0007Nl-Lj for submit@debbugs.gnu.org; Tue, 08 Oct 2013 00:30:48 -0400 Original-Received: from ironport2-out.teksavvy.com ([206.248.154.182]:65111) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1VTOwY-0007Nb-5y for 15538@debbugs.gnu.org; Tue, 08 Oct 2013 00:30:46 -0400 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: Av4EABK/CFHO+K8t/2dsb2JhbABEvw4Xc4IfAQVWIxALNBIUGA0kiCSxH5AOkQoDpHqBXoMT X-IPAS-Result: Av4EABK/CFHO+K8t/2dsb2JhbABEvw4Xc4IfAQVWIxALNBIUGA0kiCSxH5AOkQoDpHqBXoMT X-IronPort-AV: E=Sophos;i="4.84,565,1355115600"; d="scan'208";a="34994230" Original-Received: from 206-248-175-45.dsl.teksavvy.com (HELO pastel.home) ([206.248.175.45]) by ironport2-out.teksavvy.com with ESMTP/TLS/ADH-AES256-SHA; 08 Oct 2013 00:27:05 -0400 Original-Received: by pastel.home (Postfix, from userid 20848) id 17BF16049A; Tue, 8 Oct 2013 00:30:45 -0400 (EDT) In-Reply-To: ("=?UTF-8?Q?=E7=99=BD=E4=BA=95_?= =?UTF-8?Q?=E5=BD=B0?="'s message of "Sun, 6 Oct 2013 20:23:08 +0900") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3.50 (gnu/linux) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 140.186.70.43 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:79018 Archived-At: > ``(,,@q) > (\` ((\, r s))) > ((3 5)) ; Incorrect: This should be ((3 5) > (4 6)) Indeed, it's incorrect, but I think the intention of the current code is to consider the above expression as invalid, so the error is to return a value at step 2 (ignoring the second argument `s' to the unquote) instead of signalling an error. If you really want that result, you can do ``(,@(list ,@q)) > ``(,@,@q) And here, you'd have to use ``(,@(append ,@q)) I installed a patch into trunk which catches the above problems and signals an error if/when encountering such situations. Thank you, Stefan