Re: UI input unresponsive on macOS

[Eli Zaretskii]

> Date: Thu, 16 Nov 2017 19:33:43 +0000
> From: Alan Third <address@hidden>
> Cc: Gong-Yi Liao 廖宮毅 <address@hidden>,
>       Eli Zaretskii <address@hidden>, address@hidden,
>       address@hidden
> 
> > (make-thread
> >  (lambda ()
> >    (let (last-nonmenu-event)
> >      (setq test (y-or-n-p-with-timeout "test" 2 'timeout)))))
> > 
> > Athena: Works.
> > GTK+2: Timeout works, but buttons are not displayed.
> > GTK+3: Hangs.
> > NS: Crashes.
> 
> I’m not sure how we could handle that on NS. Perhaps just refuse to
> display the dialogue at all, and return nil?

If you can detect this situation, it's possible.  But silently
returning nil might not be a good idea, as it's hard to distinguish
that from normal return.  How about displaying a warning?  (You cannot
easily error out in a thread, so that's not a good option.)