bug#6774: Cut and paste with C-w/mouse-2 not working?

[David De La Harpe Golden]

On 17/08/10 13:14, Stefan Monnier wrote:
> > > They are both equally bad.  I think we should add a hook to redisplay
> > > that gets called whenever selection is non-zero.  Then that hook can
> > > do the right thing.
> > Why should redisplay concern selection?
>
> Because the behavior we want is that "if the user has seen the region
> highlighted, then it has been selected".


I'd be wary doing it in redisplay might do it "too much" just like the 
old buffer-lazy implementation.

Chong Yidong mentioned it on emacs-devel:

> It's a convincing argument, leaving the issue of efficiency aside for
> the moment.  The rule, however, should be something like:

>If you _change_ a selected region in Emacs (no matter how it was
> selected), it's available as the primary.

> That's because if you make a selected region in one application, and
> then select some text in a second application, the second application
> grabs primary.