From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: [elpa] externals/org 26ef5e3e5b: org-src: Use `sh-mode' for all the shells it can handle Date: Mon, 17 Apr 2023 13:11:27 -0400 Message-ID: References: <168174708495.14139.12756054653439048176@vcs2.savannah.gnu.org> <20230417155805.3E200C1391A@vcs2.savannah.gnu.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="24849"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Cc: Matthew Trzcinski , emacs-devel To: Lynn Winebarger Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Mon Apr 17 19:12:25 2023 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 1poSOu-0006G3-Tx for ged-emacs-devel@m.gmane-mx.org; Mon, 17 Apr 2023 19:12:25 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1poSO7-0007hQ-EU; Mon, 17 Apr 2023 13:11:35 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1poSO5-0007gM-JL for emacs-devel@gnu.org; Mon, 17 Apr 2023 13:11:33 -0400 Original-Received: from mailscanner.iro.umontreal.ca ([132.204.25.50]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1poSO3-0006RJ-RG for emacs-devel@gnu.org; Mon, 17 Apr 2023 13:11:33 -0400 Original-Received: from pmg3.iro.umontreal.ca (localhost [127.0.0.1]) by pmg3.iro.umontreal.ca (Proxmox) with ESMTP id 3686A441404; Mon, 17 Apr 2023 13:11:30 -0400 (EDT) Original-Received: from mail01.iro.umontreal.ca (unknown [172.31.2.1]) by pmg3.iro.umontreal.ca (Proxmox) with ESMTP id 0E7C244075D; Mon, 17 Apr 2023 13:11:29 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=iro.umontreal.ca; s=mail; t=1681751489; bh=br7negkClnrsD29uqD6ec+niYmzGJbfwlXw5j2mboiY=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=KtELrrw3qntyA8hRnwXRkqK6Of/HSotacRNBGIi/AvOUys+l6G/hT1NyphQXrtnBb GK9Eti7GPB9TOGMrCCtngnoinJhys6Bd8xB4YQjaCTzu9wxX2GQlR4G4cQh7Am4VW/ 7YLpCuYH7Mk/gWQpeNPkAALtX10UVKwm4OeRyLxvS5JOp8rkflCICLmCJ97sVNK641 ui6IDZW2lsZmednQA1pj/YqCSy3aKc6exszo8JiUPt47kVobaBw3B2UnRRw75uwOm3 mtdO5mDk6zVAUoJm6X1ls9HRwPPwX1+rWMrN5pHY0l5WzgoHY7a3NBqIesnKr3HUly 5338rUz+oeuCA== Original-Received: from alfajor (unknown [45.44.229.252]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id 9BD541203D4; Mon, 17 Apr 2023 13:11:28 -0400 (EDT) In-Reply-To: (Lynn Winebarger's message of "Mon, 17 Apr 2023 12:16:36 -0400") Received-SPF: pass client-ip=132.204.25.50; envelope-from=monnier@iro.umontreal.ca; helo=mailscanner.iro.umontreal.ca X-Spam_score_int: -42 X-Spam_score: -4.3 X-Spam_bar: ---- X-Spam_report: (-4.3 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_MED=-2.3, 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-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.devel:305377 Archived-At: >> ELISP> (macroexpand '`(,@(list 1 2) a b c d)) >> (append (list 1 2) '(a b c d)) >> ELISP> (macroexpand '`(a b c d ,@(list 1 2))) >> (cons 'a (cons 'b (cons 'c (cons 'd (list 1 2))))) >> ELISP> > Why is the former more efficient than the latter? One allocates N=E2=82=81+N=E2=82=82 cons cells, then other only allocates N= =E2=82=81 cons-cells. This is true regardless of how we macroexpand and byte-compile the code. This only makes a diference for code that's executed several times (i.e. not at toplevel). Stefan