Re: `delete-frame-hook' isn't defined

[John Paul Wallington]

>                          One possible problem is that tooltips are
>     frames that are deleted when they disappear.  Users may not expect the
>     hook to be run then.
> 
> Hmm.  Perhaps it should not be run for tooltip frames.
> Can you find a clean way to distinguish tooltip frames?

I haven't found a clean way yet.  If someone knows one, please yell!

One possibility is to run the hook unless the frame's `name' parameter
is `tooltip', but that is probably too fragile as
`tooltip-frame-parameters' is customizable.

-- 
John Paul Wallington