From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Francis Moreau Newsgroups: gmane.emacs.help Subject: Re: Basic questions about elisp Date: Tue, 10 Nov 2009 06:16:59 -0800 (PST) Organization: http://groups.google.com Message-ID: References: <1e9f8449-09ec-4a84-a332-9f05fadb8aa3@z41g2000yqz.googlegroups.com> <87iqdpdog1.fsf@galatea.local> <871vkdm2p1.fsf@lola.goethe.zz> <4d5245de-4a71-4be7-a445-6d033be48490@g23g2000yqh.googlegroups.com> <87zl6ziooo.fsf@lola.goethe.zz> <878wejcpys.fsf@galatea.local> <871vk99c08.fsf@galatea.local> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-Trace: ger.gmane.org 1257864898 4058 80.91.229.12 (10 Nov 2009 14:54:58 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 10 Nov 2009 14:54:58 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Tue Nov 10 15:54:51 2009 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.50) id 1N7s7C-0004CH-V4 for geh-help-gnu-emacs@m.gmane.org; Tue, 10 Nov 2009 15:54:39 +0100 Original-Received: from localhost ([127.0.0.1]:55959 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1N7s7C-0002LE-Ju for geh-help-gnu-emacs@m.gmane.org; Tue, 10 Nov 2009 09:54:38 -0500 Original-Path: news.stanford.edu!usenet.stanford.edu!news.glorb.com!news2.glorb.com!postnews.google.com!v25g2000yqk.googlegroups.com!not-for-mail Original-Newsgroups: gnu.emacs.help Original-Lines: 27 Original-NNTP-Posting-Host: 213.41.232.205 Original-X-Trace: posting.google.com 1257862620 11988 127.0.0.1 (10 Nov 2009 14:17:00 GMT) Original-X-Complaints-To: groups-abuse@google.com Original-NNTP-Posting-Date: Tue, 10 Nov 2009 14:17:00 +0000 (UTC) Complaints-To: groups-abuse@google.com Injection-Info: v25g2000yqk.googlegroups.com; posting-host=213.41.232.205; posting-account=ekTE0goAAADiVCThPmo4ph0C5bTUhQOx User-Agent: G2/1.0 X-HTTP-Via: 1.1 grimoire.wyplay.int:3128 (squid/2.5.STABLE14) X-HTTP-UserAgent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.0.11) Gecko/2009061118 Fedora/3.0.11-1.fc9 Firefox/3.0.11, gzip(gfe), gzip(gfe) Original-Xref: news.stanford.edu gnu.emacs.help:174569 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.help:69643 Archived-At: On Nov 10, 1:11=A0pm, Joost Kremers wrote: > Francis Moreau wrote: > > p...@informatimago.com (Pascal J. Bourguignon) writes: > >> Well, there are several places where it's covered, but here is one > >> where it's explicitely explained: > > >> (info "(elisp)Rearrangement") > [...] > > > ok that tells: "don't do that !" but it doesn't tell why not... > > just imagine a list as an object living somewhere in the memory of your > computer. then try to figure out which list gets *modified* by the call t= o > nconc, keeping in mind that nconc does *not* copy its arguments before do= ing its > job. > I don't really want to imagine some scenarios when reading this kind of documentation. BTW, the documentation is actually taking about the non-last argument, however I was using a constant list for the last argument. So it wouldn't apply in my case... Thanks