Re: kill-emacs-query-functions problem with y-or-n-p

[Richard Stallman]

    (defun foo () (y-or-n-p "foo? "))
    (defun bar () (y-or-n-p "bar? "))
    (setq kill-emacs-query-functions '(foo bar))

    2. Use the menu-bar File > Exit Emacs. 

    The question "foo? " correctly appears in a popup menu y/n.

    3. Respond `n'  to "foo? ".

    4. The question "bar? " should be asked via a popup menu also, but it
       appears instead in the minibuffer.

This is controlled by last-nonmenu-event.  At C level, it is
last_nonmenu_event.  Can you determine where and how it gets altered
when foo asks its question?