bug#17453: Framework extending window functions for Follow Mode (etc.).

[Juri Linkov]

>> > I posted the essence of the framework, as it now is, in a (cut down)
>> > patch at the beginning of this thread.  I have complete patches for both
>> > the framework and isearch.el available.  Together, they are really too
>> > big to post on emacs-devel.
>
>> Could you put them on a branch then?
>
> I've created the branch scratch/follow in savannah, with both the new
> framework and the proposed changes to isearch.el.

Thanks, I'm looking at your changes, and also Cc'ing Martin in the hope
that Martin could review your window-related changes as well.

PS: one immediate question - why do you need a new function isearch-call-message
when at the top of this thread Stefan asked you to replace this code with
(funcall (or isearch-message-function #'isearch-message) ,cqh ,ellip)
and even to change isearch-message-function to default to isearch-message
rather than to nil.