GNU bug report logs - #77015
31.0.50; Too many menu bar lines corrupt -nw display

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Message #23 received at 77015 <at> debbugs.gnu.org (full text, mbox):

From: Gerd Möllmann <gerd.moellmann <at> gmail.com>
To: martin rudalics <rudalics <at> gmx.at>
Cc: 77015 <at> debbugs.gnu.org
Subject: Re: bug#77015: 31.0.50; Too many menu bar lines corrupt -nw display
Date: Sat, 15 Mar 2025 13:49:37 +0100

martin rudalics <rudalics <at> gmx.at> writes:

>> Looking at display_menu_bar in xdisp.c I see that only ever one line of
>> menu-bar is displayed, the rest of the lines are cleared. Which begs the
>> question what this is good for, IMO. Maybe one should just restrict the
>> valid values of menu-bar-lines to 0 and 1.
>
> The only builds I know of that can "wrap" the menu bar when a frame gets
> narrow are the Motif and the Windows builds.  Neither of these builds
> mirror that fact in the number of the 'menu-bar-lines' frame parameter.
> 'frame-geometry' reports the correct height for the Motif builds, I do
> not recall about the Windows build.  All remaining builds truncate the
> menu bar when the frame gets to narrow - sometimes protesting vehemently
> as our problems with GTK-3 show.  I have no idea about Android.
>
> I'd say that any value less than one 1 be interpreted as "don't show a
> menu bar" and store/report the value 0.  Any value greater 0 would then
> mean to "show a menu bar if possible" and store/report a value of 1 if
> that can be done.  So for tty child frames we'd get 0 as we do already.
>
> martin

Makes sense to me.

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