GNU bug report logs - #59620
29.0.50; Wrong global-mode-string position in tab-bar + emacs -nw

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Juri Linkov <juri <at> linkov.net>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#59620: closed (29.0.50; Wrong global-mode-string position in
 tab-bar + emacs -nw)
Date: Fri, 02 Dec 2022 08:02:02 +0000

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Your message dated Fri, 02 Dec 2022 09:59:57 +0200
with message-id <867cza6xs2.fsf <at> mail.linkov.net>
and subject line Re: bug#59620: 29.0.50; Wrong global-mode-string position in tab-bar + emacs -nw
has caused the debbugs.gnu.org bug report #59620,
regarding 29.0.50; Wrong global-mode-string position in tab-bar + emacs -nw
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


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59620: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=59620
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From: Gabriel <gabriel376 <at> hotmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 29.0.50; Wrong global-mode-string position in tab-bar + emacs -nw
Date: Sat, 26 Nov 2022 18:46:08 -0300

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Severity: bug

Description:

The global-mode-string is wrongly positioned in tab-bar when using
"emacs -nw" and multiple windows.  The bug only happens with emacs -nw.

Steps:

1) emacs -Q -nw (master "af545234314601ba3dcd8bf32e0d9b46e1917f79")

2) Eval the following to add display-time-mode right-aligned to tab-bar:

(progn
  (display-time-mode 1)
  (setopt tab-bar-format '(tab-bar-format-tabs-groups
                           tab-bar-separator
                           tab-bar-format-align-right
                           tab-bar-format-global))
  (tab-bar-mode 1))

3) Split window right: C-x 3

Result: the global-mode-string will be wrongly positioned.  It expected
to be right-aligned to the current frame, but it's right-aligned to the
left window.  The position is correct while minibuffer has focus.  See
attached images.

[one-window.png (image/png, attachment)]

[bug.png (image/png, attachment)]

[minibuffer-focus.png (image/png, attachment)]

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---
Gabriel

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From: Juri Linkov <juri <at> linkov.net>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: gabriel376 <at> hotmail.com, 59620-done <at> debbugs.gnu.org
Subject: Re: bug#59620: 29.0.50; Wrong global-mode-string position in
 tab-bar + emacs -nw
Date: Fri, 02 Dec 2022 09:59:57 +0200

>> Avoiding the 'right' part in align-to has such a drawback that while
>> resizing the frame the position of the aligned element is not updated
>> immediately.  It's updated only when display-time refreshes the time on
>> the tab bar.  The position relative to the right edge has no such problem.
>> So better to leave the 'right' part on GUI frames, and switch to counting
>> from the left only on TTY frames where frames are resized less often:
>
> That would require you to make sure this code always runs in the context of
> the tab-bar (pseudo)window.  If that can be ensured, fine.

Since this can't be ensured, I pushed a simpler patch to emacs-29,
and closed.

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