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: Making a function than can only be used interactively Date: Mon, 4 Jul 2022 21:50:15 +0200 (CEST) Message-ID: References: <87pmiljgah.fsf@gnu.org> 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="11753"; mail-complaints-to="usenet@ciao.gmane.io" Cc: Tassilo Horn , help-gnu-emacs@gnu.org To: Stefan Monnier Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Mon Jul 04 21:51:44 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 1o8S6f-0002oA-RI for geh-help-gnu-emacs@m.gmane-mx.org; Mon, 04 Jul 2022 21:51:41 +0200 Original-Received: from localhost ([::1]:44254 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1o8S6e-00027P-H8 for geh-help-gnu-emacs@m.gmane-mx.org; Mon, 04 Jul 2022 15:51:40 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:45186) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o8S5L-00027D-IY for help-gnu-emacs@gnu.org; Mon, 04 Jul 2022 15:50:22 -0400 Original-Received: from w1.tutanota.de ([81.3.6.162]:58354) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o8S5J-0008PD-Cy; Mon, 04 Jul 2022 15:50:19 -0400 Original-Received: from w3.tutanota.de (unknown [192.168.1.164]) by w1.tutanota.de (Postfix) with ESMTP id A2ED3FBF767; Mon, 4 Jul 2022 19:50:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1656964215; 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=vO+YyuEf35HPwdEUVOevyr2KLojJmL/vNoeiu9q5mws=; b=I+YXFzaVm0SS2HNhcz3WVZySA5/V0K9YrJuciKQN3QfkM5sTvf05CDJGkjrB4R28 PzYUe9dM5PjhNr2SbLR1OX3fcuO3NXlH1xZ4dinGjkKA2xlW/ylvEWaJAraQ2AxFFYx Oj9kelH16BQCVugHDzwLawP3R/9IX8MHfCzGdaRHENBJimdqNZe4BSz+2f60UC5gy9y Y14uuOG8maOiouWR3TDHiX1J0qoEH2cLXtzioNmID1qa4Qp/iRPVTeEMLKMo5tfA7rm fe6dlFTk11vH0iKYsYYR51c0/e1T5HeEL7jSe7iu974ipGqwCU3ZRR7FvzekI+bOZqa sDLAy7Vmcg== 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:138294 Archived-At: Jul 4, 2022, 19:40 by monnier@iro.umontreal.ca: >> Only after byte-compile of a file?=C2=A0 >> So there is no way to actually make a function interactive only? >> > > Please define what it is you mean by "make a function interactive only". > > Do you mean that it should be illegal to write code that calls the > function directly, so whoever writes it can be sued? > Would it be acceptable for someone to just think about writing such code > as long as they don't actually write it? > > More seriously, what are you trying to gain by "mak[ing] a function > interactive only"? =20 > > For instance, writing an interactive wrapper function calling a non-interac= tive mother function. Technically, you can use `completing-read` and `read-from-minibuffer` if yo= u'd also like to set values interactively, while calling the function non-interacti= vely.=C2=A0 One can achieve more or less the same effect with setting values of local variable= s outside the interactive expression.=C2=A0 In this scenario, running the function n= on-interactively would still force interactive input from the minibuffer. I am not sure if in practice that is ever desired. > Usually, the reason why one might want to make > a function "interactive only" is that code that calls this function is > probably incorrect and would likely be served better by some > other function. So the purpose is to help people write better code. > For this reason the declaration only has an effect in terms of > byte-compiler warnings: those who don't bother to byte-compile their > code presumably don't care about the quality of their code anyway. > > Emacs doesn't offer any pre-defined way to really enforce that > a function is only used interactively, and in large parts this is > because, as a matter of design principle, Emacs makes no effort to stop > people from shooting themselves in the foot (instead, it tries to make > it easier for people not to shoot themselves in the foot). > > > Stefan >