> My biggest problem with the Emacs.app code -- and why I'm not using it
> anymore -- is that subprocess communication is horribly laggy. It
> makes several Emacs services, such as flyspell, simply unusable.
From my position of just reading the bug list (not using Emacs.app), I
would have thought that this, and the relatively large number of crashes
that seem to get reported, were the main issues facing the ns port,
rather than the lack of a fullscreen mode.