From: Eli Zaretskii <eliz@gnu.org>
To: Juri Linkov <juri@linkov.net>
Cc: 39649@debbugs.gnu.org, joca.bt@gmail.com
Subject: bug#39649: 27.0.60; tab-line doesn't scroll
Date: Fri, 28 Feb 2020 11:12:47 +0200 [thread overview]
Message-ID: <8336avgjn4.fsf@gnu.org> (raw)
In-Reply-To: <87imjshqkz.fsf@mail.linkov.net> (message from Juri Linkov on Thu, 27 Feb 2020 01:33:00 +0200)
> From: Juri Linkov <juri@linkov.net>
> Cc: João Guerra <joca.bt@gmail.com>,
> 39649@debbugs.gnu.org
> Date: Thu, 27 Feb 2020 01:33:00 +0200
>
> > I suspect that the problem comes from the tab-line fontified differently
> > by core and when fontified manually in the buffer.
>
> Eli, could you explain why there no wrapper around the C function
> display_mode_element exposed to Lisp.
Why would we need that? The related display code is in C, so we never
needed to expose this to Lisp.
I also don't understand the relation between this question and the
recipes you show.
> The closest function is format-mode-line but still its formatting is
> different from what display_mode_element really displays in the
> tab-line.
Why is that a problem? format-mode-line was not intended to be used
in display context.
> 1. emacs -Q
> 2. M-x global-tab-line-mode
>
> 3. C-x b test1
> 4. M-: (insert (format-mode-line (tab-line-format)))
> 5. Note how the tab uses the face tab-line-tab
> with released-button box style, but the tab-line
> doesn't use the face tab-line
I don't see tab-line-tab face, I see either tab-line-tab-inactive or
tab-line-tab-current. And the button style and its mouse-sensitive
behavior follows what I see on the real tab-line.
But maybe I don't understand what you allude to here. What is the
"tab" in this context, and what is "tab-line"? You have one inserted
into buffer text and one displayed on header-line-like tab-line --
which one do you allude to here? And why do you think what is
displayed is some kind of problem?
> 6. C-x b test2
> 7. M-: (insert (format-mode-line (tab-line-format) 'tab-line))
> 8. Note how the the tab-line now uses the face tab-line,
> but this face overrides the faces of individual tabs that
> should have the face tab-line-tab with released-button box style.
And here I don't understand what you mean by "overrides".
> I can't find a function that would insert to the current buffer
> a string formatted exactly as the tab-line displayed
> above the window.
Why is that needed?
P.S. I did all the testing in Emacs 27.0.90, the latest emacs-27
branch.
Thanks.
next prev parent reply other threads:[~2020-02-28 9:12 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-17 18:51 bug#39649: 27.0.60; tab-line doesn't scroll João Guerra
2020-02-17 23:03 ` Juri Linkov
2020-02-18 20:27 ` João Guerra
2020-02-18 22:39 ` Juri Linkov
2020-02-19 0:24 ` Juri Linkov
2020-02-19 20:57 ` João Guerra
2020-02-20 23:07 ` Juri Linkov
2020-02-21 1:34 ` Noam Postavsky
2020-02-22 23:52 ` Juri Linkov
2020-02-23 10:35 ` João Guerra
2020-02-23 23:06 ` Juri Linkov
2020-02-24 19:11 ` João Guerra
2020-02-25 21:20 ` Juri Linkov
2020-02-25 21:49 ` João Guerra
2020-02-26 23:16 ` Juri Linkov
2020-02-26 23:33 ` Juri Linkov
2020-02-28 9:12 ` Eli Zaretskii [this message]
2020-02-29 21:44 ` Juri Linkov
2020-03-01 16:12 ` Eli Zaretskii
2020-03-01 23:40 ` Juri Linkov
2020-09-20 8:40 ` Lars Ingebrigtsen
2020-02-27 21:13 ` João Guerra
2020-02-27 22:37 ` Juri Linkov
2020-02-28 18:30 ` João Guerra
2020-02-29 21:49 ` Juri Linkov
2020-03-04 17:25 ` João Guerra
2020-03-04 23:52 ` Juri Linkov
2020-03-05 8:04 ` João Guerra
2020-03-05 23:53 ` Juri Linkov
2020-09-20 8:41 ` Lars Ingebrigtsen
2020-10-14 6:16 ` Lars Ingebrigtsen
2020-02-28 13:16 ` Eli Zaretskii
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