bug#22804: 25.1.50; undo bug

[Eli Zaretskii]

> From: Lars Ingebrigtsen <larsi@gnus.org>
> Date: Thu, 25 Feb 2016 23:45:01 +1030
> Cc: 22804@debbugs.gnu.org
> 
> Richard Stallman <rms@gnu.org> writes:
> 
> > Type this text into an empty buffer in Fundamental mode:
> >
> >    This is a test.<ret>
> >
> > Go to the end of 'this' and type C-t.  It produces "Thi sis..."
> > Type C-n.
> > Type C-_.
> >
> > It leaves point at the end, rather than where it undid the change.
> 
> When I try this (with emacs -Q from the current trunk), it leaves point
> after the "s" in "this", which I think makes sense...

I think Richard's master branch is very old (Dec 2015), and this bug
was fixed meanwhile.

FWIW, I cannot reproduce it, either, neither on master nor on the
release branch.