Re: Saving the selection before killing

[Jan Djärv]

Stefan Monnier skrev:
> > > > Search for klipper in etc/PROBLEMS.  Now this proposal will make Emacs
> > > > behave like a buggy klipper.
> > > Not at all.  The bug in the klipper was that it requested the selection
> > > over and over.  My code only causes the selection to be requested when it
> > > shifts from being owned by some other app to being owned by Emacs.
> > > I.e. there's no looping involved.
>
> > Looping was only part of the problem.  Large selection was also a factor.
>
> I see no evidence that someone would have noticed something if it
> weren't looping.

You obviously haven't run Emacs over a slow (well say less than 1 Mbit/s) ssh 
forward X connection.

> > If Emacs will request large selections from other programs, they can
> > become sluggish too.
>
> They'll be temporarily busy replying to Emacs just at those moments when you
> do a kill in Emacs (not all kills, of course).  That is a far cry from
> "become sluggish".

Selections over slow links are painful right now.  Emacs 22 is so much slower 
in this regard than 21.x.  For example, single click with mouse-1 sometimes 
makes Emacs loop forever (C-g works though), redisplay for small changes can 
take 10:s of seconds, popup of tool tip also takes several seconds.  Your 
proposal should be customizable, and preferrably default off, as it is a new 
behaviour.

> > > > I'd be annoyed to see that in my kill ring.
> > > Please try it before jumping to conclusions.
>
> > I did try it.  Open up an OO document with some pages, select all text in
> > the document.  Move to Emacs, kill some text, C-y, M-y.  I get the OO
> > document pasted as a big chunk of text.
>
> Yes, that's the expected behavior.  Which part is *annoying*?

That when that amount of text gets drawn over a slow link it takes time.  And 
that when Emacs redisplays, it takes time.  We are talking 10:s of seconds here.

> Another M-y will get you to the next kill-ring element.

Yes, but I have to wait several seconds before Emacs is responsive again.

> The same thing could have happened without my patch if you happened to have
> killed a big chunk of text in the past.

But then I would know it was in the kill ring.

        Jan D.