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: Prefix Argument and optional argument Date: Wed, 6 Jul 2022 23:18:49 +0200 (CEST) Message-ID: References: Reply-To: carlmarcos@tutanota.com 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="6043"; mail-complaints-to="usenet@ciao.gmane.io" Cc: Bruno Barbier , Help Gnu Emacs To: carlmarcos@tutanota.com Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Thu Jul 07 00:13:31 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 1o9DH1-0001Rc-AJ for geh-help-gnu-emacs@m.gmane-mx.org; Thu, 07 Jul 2022 00:13:31 +0200 Original-Received: from localhost ([::1]:60836 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1o9DH0-0001CU-5f for geh-help-gnu-emacs@m.gmane-mx.org; Wed, 06 Jul 2022 18:13:30 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:51690) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o9CQA-0004z9-2J for help-gnu-emacs@gnu.org; Wed, 06 Jul 2022 17:18:54 -0400 Original-Received: from w1.tutanota.de ([81.3.6.162]:47404) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o9CQ8-0003kK-6c for help-gnu-emacs@gnu.org; Wed, 06 Jul 2022 17:18:53 -0400 Original-Received: from w3.tutanota.de (unknown [192.168.1.164]) by w1.tutanota.de (Postfix) with ESMTP id 8AB43FBF865; Wed, 6 Jul 2022 21:18:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1657142329; 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=Lb76q5PUiMCHa2OOUhJv6J8GmlZd8KbtIqyu40gVedU=; b=lnJpo1ig+k5SR/lirKIPvj4H0nx6v+Z+kEU0fQz42zaOsqqaf+KeBDlsYROcftv9 otzUzhAerlECxhf64C6NPX6W5XlY63j0ANfWtStQGJrQOyyeL8RxVOjju+yuIDhcu6X GoqevoI/yb8ayQcAJ6dTAw1ybu0BHa9uDBRSPGH9hyJMcj0Ib4nKHTk6pJtPuEJ05wB coM/deqHw0HnNFTS3GWdFjsaC7x/E37v2PoTea6pQFYuXoah8yuE3wgaJMpA594nbDn b/YOwA/l560yE3LMtj7783diBHJhcz3dHO37PG8Tvfzv0Bb/y5Wg7EpwQsS3oLGjrmG EAQq0R+eZQ== In-Reply-To: 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:138335 Archived-At: Jul 5, 2022, 20:26 by help-gnu-emacs@gnu.org: > Jul 5, 2022, 06:52 by brubar.cs@gmail.com: > >> carlmarcos--- via Users list for the GNU Emacs text editor >> writes: >> >>> I am having difficulty figuring out any problems associated with the fo= llowing two functions. >>> >>> Can one safely call "M-x name", "C-u M-x name", "C-u 2 M-x name", where= name is either >>> `poke' or `poke-opt'. >>> >>> (defun poke (prefix) >>> =C2=A0 "TODO." >>> =C2=A0 (interactive "P") >>> ...) >>> >> >> You should compile your code; Emacs will say: >> >> Warning: misplaced interactive spec: =E2=80=98(interactive P)=E2=80=99 >> Why is it that a warning is shown, what is the problem with it.=C2=A0 Why s= hould it only be optional? > I did call `M-x byte-compile-file file' but did not get the warning you d= esrcibe. > > >>> >>> (defun poke-opt (&optional prefix) >>> =C2=A0 "TODO." >>> =C2=A0 (interactive "P") >>> ...) >>> >> >> This version is OK. You can call it "M-x name", "C-u M-x name", "C-u 2 >> M-x name"; wether it's safe or not depends on its body though ;-) >> >> Bruno >> Why using &optional is ok, but not ok without it?