From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Jean Louis Newsgroups: gmane.emacs.help Subject: Re: [External] : Use the characters "+" and "-" in regular expressions Date: Thu, 20 May 2021 17:14:44 +0300 Message-ID: References: <20210520082613.GC1127@tuxteam.de> <20210520095603.GD1127@tuxteam.de> <20210520102244.GE1127@tuxteam.de> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="3079"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Mutt/2.0.6 (2021-03-06) Cc: "help-gnu-emacs@gnu.org" To: steve-humphreys@gmx.com Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Thu May 20 16:20:35 2021 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 1ljjXP-0000ZG-Cr for geh-help-gnu-emacs@m.gmane-mx.org; Thu, 20 May 2021 16:20:35 +0200 Original-Received: from localhost ([::1]:38046 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ljjXO-0003KR-EO for geh-help-gnu-emacs@m.gmane-mx.org; Thu, 20 May 2021 10:20:34 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:59830) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ljjWg-0002vu-2i for help-gnu-emacs@gnu.org; Thu, 20 May 2021 10:19:50 -0400 Original-Received: from stw1.rcdrun.com ([217.170.207.13]:34897) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ljjWd-0003uV-Au for help-gnu-emacs@gnu.org; Thu, 20 May 2021 10:19:49 -0400 Original-Received: from localhost ([::ffff:102.81.93.246]) (AUTH: PLAIN admin, TLS: TLS1.3,256bits,ECDHE_RSA_AES_256_GCM_SHA384) by stw1.rcdrun.com with ESMTPSA id 00000000000ADF16.0000000060A66FFC.00007BFA; Thu, 20 May 2021 07:19:38 -0700 Mail-Followup-To: steve-humphreys@gmx.com, "help-gnu-emacs@gnu.org" Content-Disposition: inline In-Reply-To: Received-SPF: pass client-ip=217.170.207.13; envelope-from=bugs@gnu.support; helo=stw1.rcdrun.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham 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:129977 Archived-At: * steve-humphreys@gmx.com [2021-05-20 16:56]: > > [:blank:] is series of characters for that: > > > > (string-match "[[:blank:]]" " ") ⇒ 0 > > Have done the following (string-match "^[:blank:]$" " ") > > Because (string-match "[:blank:]" s) was matching sentences with > space between words as well. Are you sure? As in that case the meaning of ^ is that it matches begin of line, while in [^[:blank:]] it match anything but non-blank and meaning of ^ is "not match" in that case. -- Jean Take action in Free Software Foundation campaigns: https://www.fsf.org/campaigns Sign an open letter in support of Richard M. Stallman https://stallmansupport.org/ https://rms-support-letter.github.io/