From mboxrd@z Thu Jan  1 00:00:00 1970
Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail
From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.bugs
Subject: bug#51590: follow-mode is broken with header-line and tab-line
Date: Sat, 06 Nov 2021 20:40:41 +0200
Message-ID: <83o86x9lg6.fsf@gnu.org>
References: <86bl31xfl9.fsf@mail.linkov.net> <83h7ctgk93.fsf@gnu.org>
 <86pmrf3l9m.fsf_-_@mail.linkov.net> <835yt7g3my.fsf@gnu.org>
 <YYWl/FgcizlBrKKB@ACM> <8335o9dazn.fsf@gnu.org> <YYZsGBOtJeDHyn1H@ACM>
 <83bl2xbhz1.fsf@gnu.org> <ccae8da6-e40b-77c8-1479-590d332ba793@gmx.at>
Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214";
	logging-data="38251"; mail-complaints-to="usenet@ciao.gmane.io"
Cc: acm@muc.de, 51590@debbugs.gnu.org, juri@linkov.net
To: martin rudalics <rudalics@gmx.at>
Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sat Nov 06 19:42:15 2021
Return-path: <bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org>
Envelope-to: geb-bug-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 <bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org>)
	id 1mjQdq-0009ps-PH
	for geb-bug-gnu-emacs@m.gmane-mx.org; Sat, 06 Nov 2021 19:42:14 +0100
Original-Received: from localhost ([::1]:39572 helo=lists1p.gnu.org)
	by lists.gnu.org with esmtp (Exim 4.90_1)
	(envelope-from <bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org>)
	id 1mjQdp-0001uC-87
	for geb-bug-gnu-emacs@m.gmane-mx.org; Sat, 06 Nov 2021 14:42:13 -0400
Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:53332)
 by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)
 (Exim 4.90_1) (envelope-from <Debian-debbugs@debbugs.gnu.org>)
 id 1mjQdf-0001sq-7z
 for bug-gnu-emacs@gnu.org; Sat, 06 Nov 2021 14:42:03 -0400
Original-Received: from debbugs.gnu.org ([209.51.188.43]:39080)
 by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128)
 (Exim 4.90_1) (envelope-from <Debian-debbugs@debbugs.gnu.org>)
 id 1mjQde-0002Ni-Vy
 for bug-gnu-emacs@gnu.org; Sat, 06 Nov 2021 14:42:03 -0400
Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2)
 (envelope-from <Debian-debbugs@debbugs.gnu.org>) id 1mjQde-00073r-81
 for bug-gnu-emacs@gnu.org; Sat, 06 Nov 2021 14:42:02 -0400
X-Loop: help-debbugs@gnu.org
Resent-From: Eli Zaretskii <eliz@gnu.org>
Original-Sender: "Debbugs-submit" <debbugs-submit-bounces@debbugs.gnu.org>
Resent-CC: bug-gnu-emacs@gnu.org
Resent-Date: Sat, 06 Nov 2021 18:42:02 +0000
Resent-Message-ID: <handler.51590.B51590.163622406627071@debbugs.gnu.org>
Resent-Sender: help-debbugs@gnu.org
X-GNU-PR-Message: followup 51590
X-GNU-PR-Package: emacs
Original-Received: via spool by 51590-submit@debbugs.gnu.org id=B51590.163622406627071
 (code B ref 51590); Sat, 06 Nov 2021 18:42:02 +0000
Original-Received: (at 51590) by debbugs.gnu.org; 6 Nov 2021 18:41:06 +0000
Original-Received: from localhost ([127.0.0.1]:50626 helo=debbugs.gnu.org)
 by debbugs.gnu.org with esmtp (Exim 4.84_2)
 (envelope-from <debbugs-submit-bounces@debbugs.gnu.org>)
 id 1mjQcj-00072Z-UA
 for submit@debbugs.gnu.org; Sat, 06 Nov 2021 14:41:06 -0400
Original-Received: from eggs.gnu.org ([209.51.188.92]:55768)
 by debbugs.gnu.org with esmtp (Exim 4.84_2)
 (envelope-from <eliz@gnu.org>) id 1mjQch-00071y-Bf
 for 51590@debbugs.gnu.org; Sat, 06 Nov 2021 14:41:03 -0400
Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:51102)
 by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)
 (Exim 4.90_1) (envelope-from <eliz@gnu.org>)
 id 1mjQcZ-0000qI-Td; Sat, 06 Nov 2021 14:40:56 -0400
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org;
 s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date:
 mime-version; bh=DecEzbDe6+obrCNGZ4B3V4SoiSART/jBCdgkMKGlIrE=; b=YsnyWz186UmV
 QbmzUyQs85TD+W/dlnOsqRQPVlJs2XYwrDKdot1068MMWKZGlM6wIpXoYsFc/1/qvEGTnTlTiZuRh
 /UwwbZhkMo0X3zDCZelcW92w75tEy9sgXMTV2eKDIvlLNQ05X1iSM4P6DrUkvK/CZNYxs09au8oH4
 Ptauhi5R+ldnLfJmPKyoCA71yFPbW1s4Y62lonnmst4zEP1VYefXHPEs7iYbl4a2Yxq/5HSwpyYui
 KcOw57GlexrSfEFri+SL8Z2VW0hk449CbNKGDNJhNmMiPBou26aQuSQsyDOMt6JZFs8YuMjZBLMzm
 ro57O46SVDj9f5JEkWQLTQ==;
Original-Received: from [87.69.77.57] (port=2576 helo=home-c4e4a596f7)
 by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)
 (Exim 4.90_1) (envelope-from <eliz@gnu.org>)
 id 1mjQcZ-0005Uy-ER; Sat, 06 Nov 2021 14:40:55 -0400
In-Reply-To: <ccae8da6-e40b-77c8-1479-590d332ba793@gmx.at> (message from
 martin rudalics on Sat, 6 Nov 2021 19:31:11 +0100)
X-BeenThere: debbugs-submit@debbugs.gnu.org
X-Mailman-Version: 2.1.18
Precedence: list
X-BeenThere: bug-gnu-emacs@gnu.org
List-Id: "Bug reports for GNU Emacs,
 the Swiss army knife of text editors" <bug-gnu-emacs.gnu.org>
List-Unsubscribe: <https://lists.gnu.org/mailman/options/bug-gnu-emacs>,
 <mailto:bug-gnu-emacs-request@gnu.org?subject=unsubscribe>
List-Archive: <https://lists.gnu.org/archive/html/bug-gnu-emacs>
List-Post: <mailto:bug-gnu-emacs@gnu.org>
List-Help: <mailto:bug-gnu-emacs-request@gnu.org?subject=help>
List-Subscribe: <https://lists.gnu.org/mailman/listinfo/bug-gnu-emacs>,
 <mailto:bug-gnu-emacs-request@gnu.org?subject=subscribe>
Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org
Original-Sender: "bug-gnu-emacs"
 <bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org>
Xref: news.gmane.io gmane.emacs.bugs:219138
Archived-At: <http://permalink.gmane.org/gmane.emacs.bugs/219138>

> Cc: 51590@debbugs.gnu.org, juri@linkov.net
> From: martin rudalics <rudalics@gmx.at>
> Date: Sat, 6 Nov 2021 19:31:11 +0100
> 
>  >> The picture in elisp page "Basic Windows" seems to show "window body
>  >> height" as NOT including the header line or tab line.  That picture
>  >> seems to show the header line as being ABOVE the text area, not part of
>  >> it.
>  >
>  > The updated picture doesn't have "text area" written on it at all.
> 
> I'm afraid this is a change for the worse.

I respectfully disagree.

> The text area does not contain the header line.

It does in my book.

> If you look at a version of 'coordinates-in-window-p' from the past
> century you will see that
> 
> If COORDINATES are in the text portion of WINDOW,\n\
>     the coordinates relative to the window are returned.\n\
> If they are in the mode line of WINDOW, `mode-line' is returned.\n\
> If they are in the top mode line of WINDOW, `header-line' is returned.\n\
> 
> and this has never changed.  The text area is what window_box_height
> tells us.

I don't think I understand how that follows.  And last-century
documentation may need updating anyway.

> According to your change we'd now have to rewrite doc-strings and info
> of lots of functions like 'window-text-height', 'window-body-height' or
> 'window-text-pixel-size'.

If we must, yes.  Why is that a catastrophe?

> If 'posn-at-x-y' has a problem, let's fix it.  Just that I don't really
> know what the problem is.

See bug#51632.  And let's continue the discussion there.