GNU bug report logs - #72986
Disabling menu-bar-mode changes size of new frames

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From: Reuben Thomas <rrt <at> sc3d.org>
To: martin rudalics <rudalics <at> gmx.at>
Cc: Po Lu <luangruo <at> yahoo.com>, Eli Zaretskii <eliz <at> gnu.org>, 72986 <at> debbugs.gnu.org
Subject: bug#72986: Disabling menu-bar-mode changes size of new frames
Date: Wed, 4 Sep 2024 12:23:25 +0100

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On Wed, 4 Sept 2024 at 09:02, martin rudalics <rudalics <at> gmx.at> wrote:

>  >>
>  >> gtk_distribute_natural_allocation: assertion 'extra_space >= 0' failed
>  >>
>  >
>  > Yes, both with Emacs 29 and git master produce this message when
>  > menu-bar-mode is non-nil, and the menu bar is drawn, in both window
> sizes
>  > (the normal sized window, and the strangely small one).
>
> But you can't see this message when building with gtk-2 I presume.
>

That's correct, no message with gtk-2.

This strongly hints that there was an Emacs change affecting gtk-2 _and_
> gtk-3 builds in between 29 and master.  I could imagine that commit
>
> e087c89b1e243bbd941a4a50b4bf99613e13d016
>
> is involved but if you could try to bisect, it would be of great help.
>

Just to check, you're suggesting that I bisect from emacs-29.3 (I use that
tag because it's what the version of 29 I'm using is built from) to master
HEAD, to find at which commit C-x 5 2 opens a small window immediately
(without disabling menu-bar-mode)?

BTW, could you try adding a (user-size . t) member to 'default-frame-alist'?
> And could you try doing that from an 'early-init.el' file?
>

This made no difference. I added just:

(add-to-list 'default-frame-alist '(user-size . t))

to ~/.config/emacs/early-init.el

Then I ran each Emacs with just "emacs", confirmed that default-frame-alist
was set, then disabled menu-bar-mode (Emacs 29 only), then C-x 5 2. In each
case a small window was opened as before.

-- 
https://rrt.sc3d.org

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