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: replace-regexp Date: Sat, 08 May 2021 17:10:47 -0400 Message-ID: References: <87tunf1mz5.fsf@zoho.eu> <87v97v6mxg.fsf@gnu.org> <87wnsaz9df.fsf@zoho.eu> <877dkaytwu.fsf@zoho.eu> <87czu1xdw6.fsf@zoho.eu> 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="25508"; 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:DtTFyUNAst6UO3KW/PLpvXZSWkE= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Sat May 08 23:11:39 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 1lfUEc-0006Xs-P7 for geh-help-gnu-emacs@m.gmane-mx.org; Sat, 08 May 2021 23:11:38 +0200 Original-Received: from localhost ([::1]:51702 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lfUEb-00021D-DD for geh-help-gnu-emacs@m.gmane-mx.org; Sat, 08 May 2021 17:11:37 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:48686) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lfUDw-000214-Au for help-gnu-emacs@gnu.org; Sat, 08 May 2021 17:10:56 -0400 Original-Received: from ciao.gmane.io ([116.202.254.214]:52448) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lfUDu-0000Ad-Up for help-gnu-emacs@gnu.org; Sat, 08 May 2021 17:10:56 -0400 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1lfUDs-0005gj-8I for help-gnu-emacs@gnu.org; Sat, 08 May 2021 23:10:52 +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: -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=0.249, 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:129579 Archived-At: >> There are indeed 2 "standard" solutions: >> 1- start your loop at the end, moving towards the beginning. > > You mean like this? > > (defun md-latex-back (beg end) > (interactive "r") > (save-excursion > (goto-char end) > (while (re-search-backward "_\\(.*\\)_" beg t) > (replace-match "\\\\textit{\\1}") ))) Yup. > Also works. Maybe better than the `copy-marker' stuff? My comment wasn't just for regexp-replacement but more generally for operating on a region. So better or not will depend on the specific case. In many cases either way is about as good. Stefan