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Subject: bug#76210: 31.0.50; menu-bar-mode unexpectedly shrinks frame substantially
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To reproduce this issue, please invoke Emacs with:

    $ emacs -Q --eval "(while t (menu-bar-mode (if menu-bar-mode 0 1)) (redisplay))"

Within a few seconds of running this, I unexpectedly see the frame
getting smaller and smaller.

With earlier Emacs versions, the frame unexpectedly becomes
substantially larger within a few minutes of running it.

All the best,
Markus

In GNU Emacs 31.0.50 (build 1, x86_64-pc-linux-gnu, X toolkit, Xaw
 scroll bars) of 2025-02-11 built on debian
Repository revision: 0e76716c5faa5e91ac3913b02ba4dc690cf5df83
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12004000
System Description: Debian GNU/Linux 10 (buster)

Configured using:
 'configure --with-x-toolkit=lucid --with-xpm=ifavailable
 --with-gif=ifavailable --with-tiff=ifavailable
 --with-gnutls=ifavailable'

Configured features:
FREETYPE GMP JPEG LIBXML2 MODULES NOTIFY INOTIFY PDUMPER PNG SECCOMP
SOUND THREADS TOOLKIT_SCROLL_BARS X11 XDBE XFT XIM XPM LUCID ZLIB

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From: help-debbugs@HIDDEN (GNU bug Tracking System)
To: Markus Triska <triska@HIDDEN>
Subject: bug#76210: Acknowledgement (31.0.50; menu-bar-mode unexpectedly
 shrinks frame substantially)
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Subject: bug#76210: 31.0.50; menu-bar-mode unexpectedly shrinks frame substantially
Resent-From: Eli Zaretskii <eliz@HIDDEN>
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To: Markus Triska <triska@HIDDEN>, martin rudalics <rudalics@HIDDEN>
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Date: Tue, 11 Feb 2025 21:24:58 +0200
Message-Id: <868qqcwagl.fsf@HIDDEN>
From: Eli Zaretskii <eliz@HIDDEN>
In-Reply-To: <87y0yc8dpi.fsf@HIDDEN> (message from Markus Triska on Tue, 
 11 Feb 2025 20:48:41 +0100)
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> From: Markus Triska <triska@HIDDEN>
> Date: Tue, 11 Feb 2025 20:48:41 +0100
> 
> To reproduce this issue, please invoke Emacs with:
> 
>     $ emacs -Q --eval "(while t (menu-bar-mode (if menu-bar-mode 0 1)) (redisplay))"
> 
> Within a few seconds of running this, I unexpectedly see the frame
> getting smaller and smaller.
> 
> With earlier Emacs versions, the frame unexpectedly becomes
> substantially larger within a few minutes of running it.

I cannot reproduce this on MS-Windows.

Martin, any comments, thoughts, or suggestions?

Message sent to bug-gnu-emacs@HIDDEN:

Subject: bug#76210: 31.0.50; menu-bar-mode unexpectedly shrinks frame substantially
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 >> To reproduce this issue, please invoke Emacs with:
 >>
 >>      $ emacs -Q --eval "(while t (menu-bar-mode (if menu-bar-mode 0 1)) (redisplay))"
 >>
 >> Within a few seconds of running this, I unexpectedly see the frame
 >> getting smaller and smaller.
 >>
 >> With earlier Emacs versions, the frame unexpectedly becomes
 >> substantially larger within a few minutes of running it.
 >
 > I cannot reproduce this on MS-Windows.
 >
 > Martin, any comments, thoughts, or suggestions?

I cannot reproduce it here with

In GNU Emacs 31.0.50 (build 2, x86_64-pc-linux-gnu, X toolkit, cairo
  version 1.16.0, Xaw3d scroll bars) of 2025-02-12 built on restno
Repository revision: 55ffbeaab1da66abee8a84f79c2cebd2c61f336f
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12101007
System Description: Debian GNU/Linux 12 (bookworm)

Configured using:
  'configure --with-gif=ifavailable --with-tiff=ifavailable
  --with-gnutls=no --without-pop --enable-gcc-warnings=warn-only
  --with-x-toolkit=lucid --enable-checking=yes
  --enable-check-lisp-object-type=yes 'CFLAGS=-O0 -g3 -no-pie
  -Wno-missing-braces''

Configured features:
CAIRO DBUS FREETYPE GIF GLIB GSETTINGS HARFBUZZ JPEG LIBSELINUX MODULES
NOTIFY INOTIFY PDUMPER PNG RSVG SECCOMP SOUND THREADS TIFF
TOOLKIT_SCROLL_BARS WEBP X11 XAW3D XDBE XIM XINERAMA XINPUT2 XPM XRANDR
LUCID ZLIB

The frame keeps shrinking and expanding by one line as expected.

What happens when you evaluate

(setopt frame-inhibit-implied-resize '(tab-bar-lines menu-bar-lines))

before triggering that loop?  If you want to run it from the command line,
use

  --eval "(progn (setopt frame-inhibit-implied-resize '(tab-bar-lines menu-bar-lines)) (while t (menu-bar-mode (if menu-bar-mode 0 1)) (redisplay)))"

Thanks, martin

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 Content preview: martin rudalics <rudalics@HIDDEN> writes: > before triggering
 that loop? If you want to run it from the command line, > use > > --eval
 "(progn (setopt frame-inhibit-implied-resize '(tab-bar-lines menu-bar-lines))
 (while t (menu-bar-mode (if m [...] 
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martin rudalics <rudalics@HIDDEN> writes:

> before triggering that loop?  If you want to run it from the command line,
> use
>
>  --eval "(progn (setopt frame-inhibit-implied-resize '(tab-bar-lines menu-bar-lines)) (while t (menu-bar-mode (if menu-bar-mode 0 1)) (redisplay)))"

This yields exactly the behaviour I would expect from repeatedly
enabling and disabling menu-bar-mode, i.e.: no changes of frame size
even after many repetitions.

Thank you and all the best,
Markus

Last modified: Wed, 12 Feb 2025 17:45:02 UTC

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