From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: carlmarcos--- via Users list for the GNU Emacs text editor Newsgroups: gmane.emacs.help Subject: Re: Should prefix variable be used in function argument list Date: Fri, 8 Jul 2022 23:08:18 +0200 (CEST) Message-ID: References: <87bktzbiyi.fsf@dataswamp.org> Reply-To: carlmarcos@tutanota.com Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="854"; mail-complaints-to="usenet@ciao.gmane.io" Cc: help-gnu-emacs@gnu.org To: Emanuel Berg Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Fri Jul 08 23:08:51 2022 Return-path: Envelope-to: geh-help-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 1o9vDW-000Acm-CE for geh-help-gnu-emacs@m.gmane-mx.org; Fri, 08 Jul 2022 23:08:50 +0200 Original-Received: from localhost ([::1]:47274 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1o9vDV-0002GF-Dx for geh-help-gnu-emacs@m.gmane-mx.org; Fri, 08 Jul 2022 17:08:49 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:53210) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o9vD5-0002Fz-VS for help-gnu-emacs@gnu.org; Fri, 08 Jul 2022 17:08:24 -0400 Original-Received: from w1.tutanota.de ([81.3.6.162]:39292) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o9vD3-0007RE-UR for help-gnu-emacs@gnu.org; Fri, 08 Jul 2022 17:08:23 -0400 Original-Received: from w3.tutanota.de (unknown [192.168.1.164]) by w1.tutanota.de (Postfix) with ESMTP id 52158FBF920; Fri, 8 Jul 2022 21:08:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1657314498; s=s1; d=tutanota.com; h=From:From:To:To:Subject:Subject:Content-Description:Content-ID:Content-Type:Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:In-Reply-To:In-Reply-To:MIME-Version:MIME-Version:Message-ID:Message-ID:Reply-To:References:References:Sender; bh=WG6y1YWOscZQ7Hj9DwJibFPPehkmp+BtpRa1js+KQRk=; b=mD49XSuO3IXsEAeFZLlIaDXQm0v9ImWxXaERDyut1M43GQPMb/K41X5ORgryF/SX GRESZoh/SKpoNZizNzGEBmmuKVG0zXdG2H//o2uAbrpVGPlSvyMSGaIXgb5yrl5gAMn e/oSkUxtLiw4vJ8X67Quhfe1/2dPu9n8CLZQv2P94DZJM3K8oaA5CPKvF2TNsyxtprE LcN69Yy5c87OMn/vNzZAYsncMxFH+hQH2YVkqIxAumOpirDIyNeePcrbxNwWF2NMumH C4FH8R+zpxJ/UM87+fKyN4WYkBJRRXGVDYcl4/6V2xWUVP3RmFKU6pBOzKAZlk5/5Js e4OIJuKSwQ== In-Reply-To: <87bktzbiyi.fsf@dataswamp.org> Received-SPF: pass client-ip=81.3.6.162; envelope-from=carlmarcos@tutanota.com; helo=w1.tutanota.de X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, HTML_MESSAGE=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-Content-Filtered-By: Mailman/MimeDel 2.1.29 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.io gmane.emacs.help:138389 Archived-At: Jul 8, 2022, 17:41 by incal@dataswamp.org: > carlmarcos--- via Users list for the GNU Emacs text editor wrote: > >> When one wants to use the prefix argument when calling an >> interactive function, should one include a prefix variable in >> the function argument list? >> > > Yes, almost always. Keep the function body the same for > interactive/non-interactive by it referring to the function > args and not caring which of those ways they got there. > >> Furthermore, should the prefix argument be defined as >> optional? >> > > Yes, when possible, especially when it defaults to something > that makes sense. > > All arguments that have a nil they can take on and that makes > sense, all those cand be optional if they appear to the right > of the last argument from that isn't optional. What will > happen it will just be nil which. > >> How would one call the function non-interactively for such >> function? >> > > By typing it's name between parenthesis and evaluating it. > Yes, but what should I put for the prefix value when using the function non-interactively? >> Is it always necessary to have the prefix argument as the >> first argument in the function argument list? >> > > No. > I thought that because the prefix argument in used first (using C-u N myfunc) then it also has to be the first argument in the function declaration. > -- > underground experts united > https://dataswamp.org/~incal >