From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier via Users list for the GNU Emacs text editor Newsgroups: gmane.emacs.help Subject: Re: Is there any existing solution to move list number backwards, forwards in a list? Date: Fri, 21 Oct 2022 09:13:21 -0400 Message-ID: References: Reply-To: Stefan Monnier Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="31098"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) To: help-gnu-emacs@gnu.org Cancel-Lock: sha1:eKIVERf1IBHq1TKPaAP/M9wN6xw= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Fri Oct 21 15:33:42 2022 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1ols9e-0007xH-31 for geh-help-gnu-emacs@m.gmane-mx.org; Fri, 21 Oct 2022 15:33:42 +0200 Original-Received: from localhost ([::1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ols9c-0008KK-JC for geh-help-gnu-emacs@m.gmane-mx.org; Fri, 21 Oct 2022 09:33:40 -0400 Original-Received: from [::1] (helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1olrqH-0000VU-F9 for geh-help-gnu-emacs@m.gmane-mx.org; Fri, 21 Oct 2022 09:13:41 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1olrqD-0000Jc-3C for help-gnu-emacs@gnu.org; Fri, 21 Oct 2022 09:13:37 -0400 Original-Received: from ciao.gmane.io ([116.202.254.214]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1olrq6-0001i9-T7 for help-gnu-emacs@gnu.org; Fri, 21 Oct 2022 09:13:36 -0400 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1olrq2-0009Xb-EF for help-gnu-emacs@gnu.org; Fri, 21 Oct 2022 15:13:26 +0200 X-Injected-Via-Gmane: http://gmane.org/ Received-SPF: pass client-ip=116.202.254.214; envelope-from=geh-help-gnu-emacs@m.gmane-mx.org; helo=ciao.gmane.io X-Spam_score_int: -15 X-Spam_score: -1.6 X-Spam_bar: - X-Spam_report: (-1.6 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.25, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.io gmane.emacs.help:140236 Archived-At: > Let us say item is number 7 in following list: > > '(1 2 3 4 5 6 7 8 9) > > Then I wish to move item number 7 to different number and renumber all > items so that number 7 becomes number 6 and number 6 comes in the > place of number 7. That was clear (ahem) :-) > Situation is more complex, I suspect so. From where I stand, the normal answer is to change the priority of the relevant object and then to pass your list to `sort` with the appropriate so it re-sorts based on the new priorities. Stefan