From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Juri Linkov Newsgroups: gmane.emacs.devel Subject: Re: Documentation of tab-bar-show and friends Date: Mon, 06 Sep 2021 18:24:15 +0300 Organization: LINKOV.NET Message-ID: <874kaxj0qo.fsf@mail.linkov.net> References: <83mtoqrul8.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="11933"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (x86_64-pc-linux-gnu) Cc: emacs-devel@gnu.org To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Mon Sep 06 17:44:36 2021 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 1mNGnU-000318-HC for ged-emacs-devel@m.gmane-mx.org; Mon, 06 Sep 2021 17:44:36 +0200 Original-Received: from localhost ([::1]:51578 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mNGnT-000797-Jo for ged-emacs-devel@m.gmane-mx.org; Mon, 06 Sep 2021 11:44:35 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:33376) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mNGks-00008s-CS for emacs-devel@gnu.org; Mon, 06 Sep 2021 11:41:54 -0400 Original-Received: from relay9-d.mail.gandi.net ([217.70.183.199]:35089) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mNGkp-0001gR-Lw; Mon, 06 Sep 2021 11:41:54 -0400 Original-Received: (Authenticated sender: juri@linkov.net) by relay9-d.mail.gandi.net (Postfix) with ESMTPSA id 63444FF803; Mon, 6 Sep 2021 15:41:47 +0000 (UTC) In-Reply-To: <83mtoqrul8.fsf@gnu.org> (Eli Zaretskii's message of "Mon, 06 Sep 2021 11:12:19 +0300") Received-SPF: pass client-ip=217.70.183.199; envelope-from=juri@linkov.net; helo=relay9-d.mail.gandi.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, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-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:274140 Archived-At: > The current documentation of this seems to be incomplete and for some > reason hides some of the functionality. > > First, the NEWS entry for tab-bar-show says: > > *** The tab bar is frame-local when 'tab-bar-show' is a number. > Show/hide the tab bar independently for each frame, according to the > value of 'tab-bar-show'. > > What does it mean "frame-local" in this case? Does it mean one should > use a frame parameter called tab-bar-show? Or does it mean something > else? This means it affects each frame separately. > Next, the above says "a number", but the doc string of tab-bar-show, > the defcustom forms, and the manual only describe one value: 1. > However, the code does: > > ((natnump tab-bar-show) > (if (> (length (funcall tab-bar-tabs-function frame)) tab-bar-show) 1 0)))) > > So tab-bar-show can be meaningfully set to a number other than 1. > This is undocumented, for some reason. Is that intentional? Probably no one would want to use a number other than 1.