From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Juri Linkov Newsgroups: gmane.emacs.devel Subject: Re: Looking at function Date: Fri, 01 Jul 2022 18:49:03 +0300 Organization: LINKOV.NET Message-ID: <86y1xcx2dg.fsf@mail.linkov.net> References: <86edz8k6q1.fsf@mail.linkov.net> 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="30990"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (x86_64-pc-linux-gnu) Cc: emacs-devel@gnu.org To: Stefan Monnier Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Fri Jul 01 17:55:09 2022 Return-path: Envelope-to: ged-emacs-devel@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 1o7Iz6-0007vX-Nc for ged-emacs-devel@m.gmane-mx.org; Fri, 01 Jul 2022 17:55:08 +0200 Original-Received: from localhost ([::1]:47164 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1o7Iz5-00027O-Ml for ged-emacs-devel@m.gmane-mx.org; Fri, 01 Jul 2022 11:55:07 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:38460) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o7IvA-0005ib-37 for emacs-devel@gnu.org; Fri, 01 Jul 2022 11:51:04 -0400 Original-Received: from relay12.mail.gandi.net ([2001:4b98:dc4:8::232]:55887) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o7Iv8-0006Gw-J8 for emacs-devel@gnu.org; Fri, 01 Jul 2022 11:51:03 -0400 Original-Received: (Authenticated sender: juri@linkov.net) by mail.gandi.net (Postfix) with ESMTPSA id 294D6200002; Fri, 1 Jul 2022 15:50:58 +0000 (UTC) In-Reply-To: (Stefan Monnier's message of "Tue, 28 Jun 2022 15:22:14 -0400") Received-SPF: pass client-ip=2001:4b98:dc4:8::232; envelope-from=juri@linkov.net; helo=relay12.mail.gandi.net X-Spam_score_int: -25 X-Spam_score: -2.6 X-Spam_bar: -- X-Spam_report: (-2.6 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:291786 Archived-At: >> 1. Replace ‘looking-at’ with a call to the search function, >> but keep it at point by prepending ‘\\=’ to the regexp. >> Can it break a complex regexp? > > I can't see why. Of course, you want to use \\=\\(?:...\\) but > that should be reliable. I confirm that \\= works reliable, but discovered that not all search functions can be used instead of looking-at in isearch-search-and-update. When calling a search function that searches through the minibuffer history in the minibuffer, it tries to find \\= in every minibuffer history item and eventually messes up the minibuffer contents. So looking-at can't be replaced in isearch-search-and-update. There is no problem with replacing looking-at with searching \\= in perform-replace since it uses the default search function that can be overridden by replace-re-search-function, and no one sets replace-re-search-function to a function that tries to do replacements through all minibuffer history items.