From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Adam Porter Newsgroups: gmane.emacs.devel Subject: Re: Improve `replace-regexp-in-string' ergonomics? Date: Wed, 22 Sep 2021 03:21:17 -0500 Message-ID: <87mto5ja0y.fsf@alphapapa.net> References: <878rzpw7jo.fsf@gnus.org> <8735pxjabj.fsf@gmail.com> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="12927"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.3 (gnu/linux) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Wed Sep 22 10:22:39 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 1mSxWZ-00039p-L0 for ged-emacs-devel@m.gmane-mx.org; Wed, 22 Sep 2021 10:22:39 +0200 Original-Received: from localhost ([::1]:35270 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mSxWX-00028u-HO for ged-emacs-devel@m.gmane-mx.org; Wed, 22 Sep 2021 04:22:37 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:51324) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mSxVS-0001Bs-HG for emacs-devel@gnu.org; Wed, 22 Sep 2021 04:21:30 -0400 Original-Received: from ciao.gmane.io ([116.202.254.214]:44202) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mSxVO-0000Tq-9u for emacs-devel@gnu.org; Wed, 22 Sep 2021 04:21:29 -0400 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1mSxVL-0001Js-45 for emacs-devel@gnu.org; Wed, 22 Sep 2021 10:21:23 +0200 X-Injected-Via-Gmane: http://gmane.org/ Received-SPF: pass client-ip=116.202.254.214; envelope-from=ged-emacs-devel@m.gmane-mx.org; helo=ciao.gmane.io X-Spam_score_int: -15 X-Spam_score: -1.6 X-Spam_bar: - X-Spam_report: (-1.6 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.25, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no 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:275305 Archived-At: Augusto Stoffel writes: > Clojure has a moderately useful named variant of the threading macro for > this kind of situation: > > (as-> expr name & forms) > > Binds name to expr, evaluates the first form in the lexical context > of that binding, then binds name to that result, repeating for each > successive form, returning the result of the last form. > > (I guess I would have chosen the opposite order of the 'expr' and 'name' > arguments, though.) Agreed, I'd be happy to have a `thread-as' macro, used like: (thread-as NAME EXPR &rest FORMS) I considered proposing one recently, but it seems like anaphoric macros aren't popular around here. :) Sometimes they really are the best way to simplify code, since not all functions work with `thread-last' or `thread-first'.