bug#5998: 23.1.96; Breadcrumbs defeat C-u 1 C-v in Info

[Eli Zaretskii]

> From: Andrew Hyatt <ahyatt@gmail.com>
> Cc: "'Eli Zaretskii'" <eliz@gnu.org>,  <5998@debbugs.gnu.org>
> Date: Mon, 05 Sep 2016 00:42:47 -0400
> 
> "Drew Adams" <drew.adams@oracle.com> writes:
> 
> >>  emacs -Q
> >>  C-u C-h i /path/to/emacs/info/emacs RET
> >>  g Narrowing RET
> >>  C-u 1 C-v
> >> 
> >> Note that the display does not scroll by one line.
> >
> > And it is a regression: the problem does not exist in
> > GNU Emacs 23.1.95.1 (i386-mingw-nt5.1.2600)
> >  of 2010-04-03 on G41R2F1
> 
> The problem appears fixed in Emacs 25. Eli, can you reproduce this
> still?

No.  Juri installed the patched he proposed during the discussion, so
the bug is no longer exposed.  (But the original problem with
scrolling a window that starts with invisible text followed by an
overlay with an after-string -- that problem still exists.)