bug#39121: 27.0.60; occur: Add bindings for next-error-no-select

[Eli Zaretskii]

> From: Lars Ingebrigtsen <larsi@gnus.org>
> Date: Sun, 25 Jul 2021 08:41:14 +0200
> Cc: Juri Linkov <juri@linkov.net>, 39121@debbugs.gnu.org,
>  Tino Calancha <tino.calancha@gmail.com>
> 
> Mattias Engdegård <mattiase@acm.org> writes:
> 
> > All right, this might work. Patch!
> 
> Skimming the patch, it makes sense to me.  (But I didn't try it.)
> 
> > The immediate visible benefit is that all matches on the same line are
> > highlighted, not just the first one. It also fixes the compatibility
> > problems mentioned above by removing occur-highlight-regexp entirely.
> >
> > External packages that populate occur-mode buffers themselves should
> > still work, since the old `occur-target` property format is still
> > recognised. In those cases we just highlight from the first match to
> > the end of the line.
> 
> Great; go ahead and push.
> 
> (And I see that `occur-highlight-regexp' was introduced after emacs-27,
> so it's indeed OK to just remove it like your patch does.)

Should we say something about these changes in NEWS?