From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.help Subject: Re: Etags and regexps Date: Sat, 20 Jul 2019 12:48:11 +0300 Message-ID: <83h87ht4tg.fsf@gnu.org> References: <8336j7pd80.fsf@gmail.com> Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="164688"; mail-complaints-to="usenet@blaine.gmane.org" To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Sat Jul 20 11:48:26 2019 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1holya-000gir-S0 for geh-help-gnu-emacs@m.gmane.org; Sat, 20 Jul 2019 11:48:24 +0200 Original-Received: from localhost ([::1]:50290 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1holyZ-0000yS-Db for geh-help-gnu-emacs@m.gmane.org; Sat, 20 Jul 2019 05:48:23 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:33746) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1holyV-0000yA-GT for help-gnu-emacs@gnu.org; Sat, 20 Jul 2019 05:48:20 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:48098) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1holyV-0008GF-D2 for help-gnu-emacs@gnu.org; Sat, 20 Jul 2019 05:48:19 -0400 Original-Received: from [176.228.60.248] (port=3224 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1holyU-0003sm-PT for help-gnu-emacs@gnu.org; Sat, 20 Jul 2019 05:48:19 -0400 In-reply-to: <8336j7pd80.fsf@gmail.com> (message from Pascal Quesseveur on Mon, 15 Jul 2019 16:46:39 +0200) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] 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.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.org gmane.emacs.help:121209 Archived-At: > From: Pascal Quesseveur > Date: Mon, 15 Jul 2019 16:46:39 +0200 > > I am trying to set regexps to let etags recognize tags from Object > Pascal code. For ex. the following regexp; > > /^[[:space:]]*type[[:space:]]+\([^ \t=]+\)/\1/ > > applied to a type declaration: > > type MyType = class(TObject) > > matches class MyType. I am now trying to match declarations on > multiple lines, for ex.: > > type > MyType = class(TObject) > > I have tried to put a new line in my regexp and use m modifier in > etags regexp but it doesn't work (emacs 24 & 26.2). When i add a m > modifier to the original regexp which doesn't contain newlines, it > doesn't work anymore. > > So how are we supposed to use m modifier? The problem is with the leading "^" in your regexp: remove it, and everything will work as you expect. Etags always matches the regexp anchored, i.e. it prepends "^" to it, so that "^" confuses the regexp engine.