From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Daniel Brooks Newsgroups: gmane.emacs.devel Subject: Re: Docs for &optional and &rest arguments together Date: Thu, 31 Dec 2020 09:30:51 -0800 Message-ID: <87y2hdopbo.fsf@db48x.net> References: <87o8icq958.fsf@gnus.org> <877doyoa9g.fsf@gnus.org> <20201231112634.GA5158@tuxteam.de> 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="8296"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.1 (gnu/linux) Cc: "tomas@tuxteam.de" , "emacs-devel@gnu.org" To: arthur miller Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Thu Dec 31 18:32:30 2020 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 1kv1oM-00024O-B1 for ged-emacs-devel@m.gmane-mx.org; Thu, 31 Dec 2020 18:32:30 +0100 Original-Received: from localhost ([::1]:43270 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kv1oK-0006ig-Uw for ged-emacs-devel@m.gmane-mx.org; Thu, 31 Dec 2020 12:32:28 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:49186) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kv1mv-0006CY-HE for emacs-devel@gnu.org; Thu, 31 Dec 2020 12:31:04 -0500 Original-Received: from smtp-out-4.mxes.net ([2605:d100:2f:10::315]:48923) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kv1ms-0003kl-0h for emacs-devel@gnu.org; Thu, 31 Dec 2020 12:31:01 -0500 Original-Received: from Customer-MUA (mua.mxes.net [10.0.0.1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.mxes.net (Postfix) with ESMTPSA id 344C67597A; Thu, 31 Dec 2020 12:30:52 -0500 (EST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mxes.net; s=mta; t=1609435856; bh=OKXAdl+wnLHrz6q3fXu0Nmv/ikgeJBybC6IJ7Vvsyqo=; h=From:To:Subject:References:Date:In-Reply-To:Message-ID: MIME-Version:Content-Type; b=iZr7+hZiyIxun3yp00gLEGa8u63onTnLJ8F5+D3jfTzNxGyT33yQTdxo/9Vmn67C/ 9EO2fpCmzZxOk/47qJZIzQyccGKhtnvbFc5lKPXAtEUwiRSQCrQ7FoQQ/yJ9pROCjc lpDbS3TFdlQ0YiwN8QWbeawbiVk/9rt6Rc+Hwk9M= Face: iVBORw0KGgoAAAANSUhEUgAAADAAAAAwBAMAAAClLOS0AAAABGdBTUEAALGOfPtRkwAAABJQ TFRFpKfbdou67PD6JjJgAwUWXGSeIcyLHgAAAkZJREFUOI1VU8Fy6yAMxLi+Q13fCZ3cnQL3dqTc 7RD+/1feStDXVnXHDuvVSivZTMba2GPdw3gyCGcMAFxTyrTd9dwGoxHiZX9PmRFUHYAQlGGtXY+F Uk0SJOxgJiUEnH1qkitT9D+pQub7qGAmUbR6bu3CvI96Yv6QqkBBMrsyfZccr1/RDXGDTLf4P7ZY glVxe2V+/ACXWO1gvDO9/gDRpFFVmPluvLcmBjd5H6d8DEte+Pbk4rcY/Fa5tLKLOtCZsuQKYhpa LOkYDT7hESya7/WIET3lfQBqX0pwFtbI832Is0ayMUR9B+12xjgPCQ089cfwkCkX6L5TPmRelJTh zMS0Sz1PyjLAMCUWjcmgQLWQMds+e3aaauZDf9dU9A2/8kPVF2odCUoMKHkfjJR+mbgC+DRiycw5 3XSqGe6HmhN/AWjHypkAXOAFW5EiuA1ge2GiZuMb0s1fSEXcATeLUfbyEY2L8yPOmdSsdghQXx3K pz2eoeXuYvMCINVFDrCdNfVUp4eJ6cSEbjbgFjBEvonGGTrgv9cHjAc8aVgSAPoxaONbzfwhDIhR at7IIS7fAGiDSwIA9alhhTBzfA7YM2FY6eMwayrIGK8FDFmshmUA43WqhFtpvoqG9HHaJ7fqtgTz 8EWVkgZgtsylFliHDgk0MB7KAEC45C/rgnGvanNLXyzOeTzcT2nw/N44gfrtYXRQLoz9Q3TgmJRx 2Mx/Q51qzpm+l3m8z2SWBqC5+PZXAtNYlGFf/gKfHfjFkDT4x7od7R+w3Ls+ZdQBuQAAAABJRU5E rkJggg== In-Reply-To: (arthur miller's message of "Thu, 31 Dec 2020 17:08:10 +0000") X-Sent-To: Received-SPF: none client-ip=2605:d100:2f:10::315; envelope-from=db48x@db48x.net; helo=smtp-out-4.mxes.net X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, SPF_HELO_PASS=-0.001, SPF_NONE=0.001 autolearn=ham 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:262187 Archived-At: arthur miller writes: > It Is flera f=C3=B6r me hos it work. What I am saying is that docs does n= ot > say that we can't omit "optional" c or d when &rest is used. In the > examples you are illustrating with, one can't omit say d and write > (foo a b c e), both c and d are required, so user has to pass > explicitly at least nil if not d is provided: (foo a b c nil e) It has the same behavior even when there is no &rest argument. The caller cannot omit argument c while still supplying argument d without inserting a nil: (foo a b d) vs (foo a b nil d). Both c and d are _optional_, because the caller deson't have to supply them. But it does have to supply the earlier ones if it wants to supply the later ones. db48x