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: Improve `replace-regexp-in-string' ergonomics? Date: Tue, 05 Oct 2021 19:18:48 +0300 Organization: LINKOV.NET Message-ID: <875yuban9b.fsf@mail.linkov.net> References: <878rzpw7jo.fsf@gnus.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="21505"; 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: Lars Ingebrigtsen Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Tue Oct 05 19:35:17 2021 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 1mXoLV-0005Gf-PQ for ged-emacs-devel@m.gmane-mx.org; Tue, 05 Oct 2021 19:35:17 +0200 Original-Received: from localhost ([::1]:37272 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mXoLT-0006rH-QW for ged-emacs-devel@m.gmane-mx.org; Tue, 05 Oct 2021 13:35:15 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:50462) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mXnoJ-0000z5-A9 for emacs-devel@gnu.org; Tue, 05 Oct 2021 13:01:01 -0400 Original-Received: from relay11.mail.gandi.net ([217.70.178.231]:37235) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mXnoD-0006km-Kn for emacs-devel@gnu.org; Tue, 05 Oct 2021 13:00:57 -0400 Original-Received: (Authenticated sender: juri@linkov.net) by relay11.mail.gandi.net (Postfix) with ESMTPSA id 67B83100005; Tue, 5 Oct 2021 17:00:46 +0000 (UTC) In-Reply-To: <878rzpw7jo.fsf@gnus.org> (Lars Ingebrigtsen's message of "Wed, 22 Sep 2021 06:36:27 +0200") Received-SPF: pass client-ip=217.70.178.231; envelope-from=juri@linkov.net; helo=relay11.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 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.23 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:276351 Archived-At: > (org-babel-read > (concat "'" > (thread-last > results > (regexp-replace "'" "\"") > (regexp-replace ",[[:space:]]" " ") > (regexp-replace "\\]" ")") > (regexp-replace "\\[" "(")))) > > We could also consider making `regexp-replace' take a series of pairs, > since this is so common. Like: > > (org-babel-read > (concat "'" > (regexp-replace "'" "\"" > ",[[:space:]]" " " > "\\]" ")" > "\\[" "(" > results))) When the user needs to apply more replacements to the results of previous replacements, then 'thread-last' could be used like in the first example above. Otherwise, after adding replacement pairs as args of 'regexp-replace', replacements should be applied "simultaneously". E.g. in the new version Julia 1.7: https://lwn.net/SubscriberLink/871486/e4ae97b79d72bb25/ and https://github.com/JuliaLang/julia/pull/40484 the existing function 'replace' has been enhanced to accept any number of replacement patterns that are applied simultaneously left to right, e.g. replace("abc", "c" => "Z", "Z" => "WWW") returns "abZ", not "abWWW".