bug#9699: frame-auto-hide-function

[martin rudalics]

> frame-auto-hide-function has no NEWS entry, and is missing a :version tag.
>
> It needs a NEWS entry (which should contain some mention of "iconify")
> because it changes existing behaviour.

Will be done as soon as I have fixed some bugs ...

> Example: I like my diff buffers in a separate frame, so I use:
>
> emacs -Q --eval "(setq special-display-regexps '(\".*diff\\*\"))"
>
> C-x C-f /path/to/modified/file/under/vcs
> C-x v =
>    -> diff buffer pops up in new frame
>
> Now using "C-x k" to kill the diff buffer iconifies the associated
> frame. It used to just delete it (which I think was better, but YMMV).

... like this - the argument KILL of `window--delete' is unused.

martin, who feels sorry for the inconvenience