Re: Stepping Back: A Wealth Of Completion systems Re: [ELPA] New package: vertico

[Eli Zaretskii]

> From: Stefan Monnier <monnier@iro.umontreal.ca>
> Date: Wed, 21 Apr 2021 15:22:34 -0400
> Cc: philipk@posteo.net, emacs-devel@gnu.org, Yuri Khan <yuri.v.khan@gmail.com>
> 
> > That's easy to support with menus: just doesn't create the submenu
> > unless the user says so with some mouse gesture, like pressing some
> > modifier key when clicking on a menu item.
> 
> I don't think Gtk menus offer such a functionality

Isn't the menu data created by Emacs, GTK or not?  If so, we control
whether a menu item has children or not.