🚀 go-pugleaf

> >  >  vm-preview-message-hook	Called when a message is first displayed if
> >  > 				you have previewing enabled.
> > 
> > What would hook functions expect the operating environment to be?
> > Current buffer, clipping region, etc.  This question applies to
> > all of these hooks.
> 
> I think the obvious thing would be that the current buffer is the folder
> buffer, and the clipping region is the message as it is about to be displayed.
> This would generally mean that the hidden headers aren't visible, and in the
> case of previewing, most of the body isn't visible either.  But it doesn't
> matter.  This is what my patch implemented, but if you want to implement
> something else, that's fine too.  We can adapt.


If I had a preview-message hook available I would try to use it to make it 
obvious that the message is only partially displayed and perhaps indicate
how much remains.  Because a partial message looks so much like a complete
(short) message, I have never used previewing at all.

I mention this just to indicate a requirement that information be readily
available to the hook function on how much of the message is undisplayed.
This may (or may not) have some bearing on what is included in the clipping
region.

- Len Weisberg - weisberg@corp.hp.com - HP - Palo Alto Info Tech Center