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.bugs Subject: bug#52558: Option for easier typing of regexps Date: Sun, 19 Dec 2021 19:01:40 +0200 Organization: LINKOV.NET Message-ID: <86v8zkkgxn.fsf@mail.linkov.net> References: Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="17708"; 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: 52558@debbugs.gnu.org To: ndame Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sun Dec 19 18:27:18 2021 Return-path: Envelope-to: geb-bug-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 1myzxu-0004R1-I1 for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 19 Dec 2021 18:27:18 +0100 Original-Received: from localhost ([::1]:52668 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1myzxt-0003pS-39 for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 19 Dec 2021 12:27:17 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:37228) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1myzrt-0001yD-FR for bug-gnu-emacs@gnu.org; Sun, 19 Dec 2021 12:21:06 -0500 Original-Received: from debbugs.gnu.org ([209.51.188.43]:36416) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1myzrr-0007Mi-M7 for bug-gnu-emacs@gnu.org; Sun, 19 Dec 2021 12:21:05 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1myzrr-0007CI-Is for bug-gnu-emacs@gnu.org; Sun, 19 Dec 2021 12:21:03 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Juri Linkov Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 19 Dec 2021 17:21:03 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 52558 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: moreinfo Original-Received: via spool by 52558-submit@debbugs.gnu.org id=B52558.163993441327499 (code B ref 52558); Sun, 19 Dec 2021 17:21:03 +0000 Original-Received: (at 52558) by debbugs.gnu.org; 19 Dec 2021 17:20:13 +0000 Original-Received: from localhost ([127.0.0.1]:47943 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1myzr2-00079T-W5 for submit@debbugs.gnu.org; Sun, 19 Dec 2021 12:20:13 -0500 Original-Received: from relay5-d.mail.gandi.net ([217.70.183.197]:46239) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1myzr0-000796-SR for 52558@debbugs.gnu.org; Sun, 19 Dec 2021 12:20:12 -0500 Original-Received: (Authenticated sender: juri@linkov.net) by relay5-d.mail.gandi.net (Postfix) with ESMTPSA id CBAEF1C0009; Sun, 19 Dec 2021 17:20:03 +0000 (UTC) In-Reply-To: (ndame via's message of "Thu, 16 Dec 2021 17:41:17 +0000") X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:222726 Archived-At: > I use query replace regexp a lot, as I imagine other people do, and I > always found that typing capturing groups and alternation is clumsy, > because they have to be escaped, and they are the ones needed > most often: \(...\) \| > > There could be a user option to make these easier to type by providing > a variable which controls which characters need escaping in > interactive mode, so the user could list those characters for which > the escaping rules are reversed when typing in the regexp replace > prompt. Such option already exists, and it allows using custom regexp syntax both for isearch and query-replace: (setq search-default-mode (lambda (s &optional _lax) (let ((chars '("|" "(" ")")) (placeholder (format "@placeholder%s@" (int-to-string (buffer-modified-tick))))) (dolist (char chars) (setq s (replace-regexp-in-string placeholder char (replace-regexp-in-string char (concat "\\\\" char) (replace-regexp-in-string (concat "\\\\" char) placeholder s))))) s))) The same way more choices could be added easily to this user option, such as `pcre' or `rx'.