bug#69460: 29.2.50; dialog confirmation box not working

[Eli Zaretskii]

> From: Jeff Filipovits <jeff@civil-rights.law>
> Date: Wed, 28 Feb 2024 10:19:24 -0500
> 
> Previously (Emacs 28),
> 
> (let ((last-nonmenu-event nil))
>     (yes-or-no-p "whatever"))
> 
> Would pop up a system dialog box. This does not work 
> anymore.

Yes, because popping up a GUI dialog just because last-nonmenu-event
was nil caused trouble in some important cases, especially immediately
after starting Emacs.  The conditions for triggering GUI dialogs are
now more elaborate:

  (defun use-dialog-box-p ()
    "Return non-nil if the current command should prompt the user via a dialog 
box."
    (and last-input-event                 ; not during startup
         (or (consp last-nonmenu-event)   ; invoked by a mouse event
             (and (null last-nonmenu-event)
                  (consp last-input-event))
             from--tty-menu-p)            ; invoked via TTY menu
         use-dialog-box))

This is not a bug.