From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Andreas Schwab Newsgroups: gmane.emacs.bugs Subject: bug#18555: 24.4.50; butlast and nbutlast doesn't handle improper lists Date: Thu, 25 Sep 2014 09:21:50 +0200 Message-ID: References: NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1411629752 27213 80.91.229.3 (25 Sep 2014 07:22:32 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Thu, 25 Sep 2014 07:22:32 +0000 (UTC) Cc: 18555@debbugs.gnu.org To: Leo Liu Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Thu Sep 25 09:22:24 2014 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 1XX3Ng-00089A-BT for geb-bug-gnu-emacs@m.gmane.org; Thu, 25 Sep 2014 09:22:24 +0200 Original-Received: from localhost ([::1]:38590 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XX3Nf-0005KU-LV for geb-bug-gnu-emacs@m.gmane.org; Thu, 25 Sep 2014 03:22:23 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:56263) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XX3NX-0005Jo-83 for bug-gnu-emacs@gnu.org; Thu, 25 Sep 2014 03:22:21 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XX3NP-0000da-Jq for bug-gnu-emacs@gnu.org; Thu, 25 Sep 2014 03:22:15 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:59979) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XX3NP-0000ae-Hm for bug-gnu-emacs@gnu.org; Thu, 25 Sep 2014 03:22:07 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1XX3NK-0004di-4X for bug-gnu-emacs@gnu.org; Thu, 25 Sep 2014 03:22:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Andreas Schwab Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Thu, 25 Sep 2014 07:22:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 18555 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 18555-submit@debbugs.gnu.org id=B18555.141162971517816 (code B ref 18555); Thu, 25 Sep 2014 07:22:02 +0000 Original-Received: (at 18555) by debbugs.gnu.org; 25 Sep 2014 07:21:55 +0000 Original-Received: from localhost ([127.0.0.1]:51543 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1XX3NC-0004dH-S8 for submit@debbugs.gnu.org; Thu, 25 Sep 2014 03:21:55 -0400 Original-Received: from cantor2.suse.de ([195.135.220.15]:37699 helo=mx2.suse.de) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1XX3NA-0004d2-80 for 18555@debbugs.gnu.org; Thu, 25 Sep 2014 03:21:53 -0400 Original-Received: from relay1.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id 4F55BAD1B; Thu, 25 Sep 2014 07:21:51 +0000 (UTC) X-Yow: Is this BOISE?? In-Reply-To: (Leo Liu's message of "Thu, 25 Sep 2014 12:05:49 +0800") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (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:93721 Archived-At: Leo Liu writes: > (nbutlast '(1 2 . 3)) > > throws an error due to `length' which can be fixed > by using safe-length instead. > > (butlast '(1 2 . 3)) > > still throws an error due to copy-sequence not taking > improper list. > > What is the right thing to do? Don't do that then. Andreas. -- Andreas Schwab, SUSE Labs, schwab@suse.de GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE 1748 E4D4 88E3 0EEA B9D7 "And now for something completely different."