From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Michael Heerdegen Newsgroups: gmane.emacs.help Subject: Re: Adding String to Beginning of Lines Date: Wed, 11 Nov 2020 11:59:52 +0100 Message-ID: <874klwf9av.fsf@web.de> References: <20201110111024.GA15992@tuxteam.de> <87zh3pctr1.fsf@web.de> <87o8k5csqj.fsf@web.de> <87tutxb7yz.fsf@web.de> <87y2j9f186.fsf@web.de> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="29754"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) To: help-gnu-emacs@gnu.org Cancel-Lock: sha1:U6TSsu5yCCUa/bznUILfUub1bRY= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Wed Nov 11 12:01:15 2020 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 1kcnsJ-0007al-AN for geh-help-gnu-emacs@m.gmane-mx.org; Wed, 11 Nov 2020 12:01:15 +0100 Original-Received: from localhost ([::1]:48038 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kcnsI-00008R-89 for geh-help-gnu-emacs@m.gmane-mx.org; Wed, 11 Nov 2020 06:01:14 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:43816) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kcnrC-00007R-Fj for help-gnu-emacs@gnu.org; Wed, 11 Nov 2020 06:00:06 -0500 Original-Received: from static.214.254.202.116.clients.your-server.de ([116.202.254.214]:55472 helo=ciao.gmane.io) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kcnrB-0007cu-0R for help-gnu-emacs@gnu.org; Wed, 11 Nov 2020 06:00:06 -0500 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1kcnr8-0006J2-HK for help-gnu-emacs@gnu.org; Wed, 11 Nov 2020 12:00:02 +0100 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-detected-operating-system: by eggs.gnu.org: First seen = 2020/11/11 05:55:22 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -13 X-Spam_score: -1.4 X-Spam_bar: - X-Spam_report: (-1.4 / 5.0 requ) BAYES_00=-1.9, FREEMAIL_FORGED_FROMDOMAIN=0.25, FREEMAIL_FROM=0.001, 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: 2.1.23 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:125222 Archived-At: Jean Louis writes: > If I understand well I can simply remove my function and instead use > seq-empty-p? It looks that it does what we discussed here. Yes. Please (require 'seq) before using it. Note that very old Emacs versions don't have the "seq" library. For those (and only those) a "seq" package is provided in Gnu Elpa. Michael.