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: Changing regexp to single \ for message printing Date: Tue, 16 Jul 2024 22:53:58 -0400 Message-ID: References: <3VXsHtsIdcxQp-XQqhtWrmvJ0486DT9PwUch-pEjK5DrVygUlYKfeE45hQ0G1dSdLfTiGcWV404v7pxOe-0yUtxz2iD2huevv9lZwHnt4uw=@protonmail.com> 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="31213"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) To: help-gnu-emacs@gnu.org Cancel-Lock: sha1:AYN+b/tNLR8ebyc4XhnurpOLFpk= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Wed Jul 17 04:54:55 2024 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 1sTuoh-0007zE-C2 for geh-help-gnu-emacs@m.gmane-mx.org; Wed, 17 Jul 2024 04:54:55 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sTuo1-00067o-A8; Tue, 16 Jul 2024 22:54:13 -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 1sTuny-00067Y-68 for help-gnu-emacs@gnu.org; Tue, 16 Jul 2024 22:54:10 -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 1sTunu-0002Wi-DV for help-gnu-emacs@gnu.org; Tue, 16 Jul 2024 22:54:09 -0400 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1sTunq-0006uy-RJ for help-gnu-emacs@gnu.org; Wed, 17 Jul 2024 04:54:02 +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: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.001, SPF_HELO_NONE=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: 2.1.29 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-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.help:147261 Archived-At: > I would like to have a function that takes a regexp such as > > "\\(\\s-*\\[\\-\\] \\)\\(.*\\)" Nitpick, the above is the source representation of a string intended to be used as a regexp. The actual string (regexp) that this represents is: \(\s-*\[\-\] \)\(.*\) > (message regexp-display-string) The first argument to `message` should virtually *always* be an immediate string rather than a reference to a variable or some computed value. IOW, always do (message "" regexp-display-string) unless you *really* know what you're doing and why you're doing it. Stefan