bug#17893: 24.4.50; (error "Marker does not point anywhere")

[Eli Zaretskii]

> Date: Mon, 20 Nov 2017 21:01:58 +0100
> From: charles@aurox.ch (Charles A. Roelli)
> CC: monnier@IRO.UMontreal.CA, 17893@debbugs.gnu.org
> 
> > For mark-ring, I think it's easier to just reset it to nil in the new
> > clone (it's arguably even more correct, since this is a fresh buffer),
> > but in general this is a ticking bomb, unless I'm missing something.
> > If I'm right, the only solution is to walk all the markers that point
> > to the parent buffer and clone them to point to the cloned buffer
> > (this has to be done in C).
> 
> By C, do you mean the function `clone-buffer'?

No, I meant what's in marker.c.