Re: mouse.el patch for region tracking

[JD Smith]

On Jan 2, 2006, at 6:45 PM, Stefan Monnier wrote:

> > The one question remaining is whether it is appropriate to delete the
> > overlay (as I currently do) when transient-mark-mode is nil, and
> > terminating events aren't being processed.  This means the  
> > highlighted
> > region vanishes just after the drag completes.
>
> I have a question about this part: why do you not delete the  
> overlay when
> transient-mark-mode is active?

I guess because the region is still active, so, as normally in  
transient-mark-mode, the active region should remain highlighted  
until mark is deactivated, just as in normal selection.  Maybe this  
isn't necessary.  I'd just as soon have it always delete.  In my  
mode, I place another overlay there more temporarily, so it doesn't  
affect me.

> As for the extra argument handle-terminating-event, I'd call it
> "do-mouse-drag-region-post-process" and I wouldn't document what it
> does, but just say that it should only be used by mouse-drag-region.

Done.

One thing bothered me while playing with transient mark mode: 'mouse- 
region-delete-keys', while nice, is very inconsistent in transient  
mark mode.    If you define a region with the mouse, it works.  If  
you define a region with C-space and then move point, it does not  
work.  I know the name implies this, but the semantics of "mark  
something yellow, hit the delete key" seem fairly intuitive.

JD