From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Emanuel Berg via Users list for the GNU Emacs text editor Newsgroups: gmane.emacs.help Subject: Re: [External] : Re: Regexp for matching control character, say, FORM FEED. (Was: Re: The `^L' appeared in built-in help.) Date: Thu, 22 Jul 2021 06:14:33 +0200 Message-ID: <878s1z0yty.fsf@zoho.eu> References: <87lf61ymol.fsf@zoho.eu> <87im14xv08.fsf@zoho.eu> <87o8avrvb6.fsf@zoho.eu> <87fsw7run2.fsf@zoho.eu> Reply-To: Emanuel Berg Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="10711"; 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:A2Oaq9rFjHeBPtvUjgSkLP70kdQ= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Thu Jul 22 06:15:15 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 1m6Q79-0002aG-6X for geh-help-gnu-emacs@m.gmane-mx.org; Thu, 22 Jul 2021 06:15:15 +0200 Original-Received: from localhost ([::1]:58842 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1m6Q77-0007y9-TX for geh-help-gnu-emacs@m.gmane-mx.org; Thu, 22 Jul 2021 00:15:13 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:56336) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m6Q6h-0007xf-L0 for help-gnu-emacs@gnu.org; Thu, 22 Jul 2021 00:14:48 -0400 Original-Received: from ciao.gmane.io ([116.202.254.214]:52806) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m6Q6g-0002jF-1b for help-gnu-emacs@gnu.org; Thu, 22 Jul 2021 00:14:47 -0400 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1m6Q6d-0001xX-OH for help-gnu-emacs@gnu.org; Thu, 22 Jul 2021 06:14:43 +0200 X-Injected-Via-Gmane: http://gmane.org/ Mail-Followup-To: help-gnu-emacs@gnu.org Mail-Copies-To: never 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: -16 X-Spam_score: -1.7 X-Spam_bar: - X-Spam_report: (-1.7 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.248, 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:132010 Archived-At: Drew Adams wrote: >>>>> I want to know whether there are some similar regexp >>>>> patterns in Emacs as the ones used by grep, say, $'\014' >>>>> or $'\f'. >>>> >>>> (re-search-forward "\C-l") >>> >>> Yes, or (re-search-forward "[\f]") >>> or (re-search-forward "[\014]") >> >> What about >> >> (re-search-forward (kbd "C-l")) > > Sure. Which is the same as (re-search-forward "\f"). So far, these works (re-search-forward "[\014]") (re-search-forward "[\f]") (re-search-forward "\C-l") (re-search-forward "\f") (re-search-forward (kbd "C-l")) It seems subexpressions at lines 1 and 2 evaluate to the same "[^L]", as does for their part lines 3, 4 and 5, and then it is "^L"... -- underground experts united https://dataswamp.org/~incal