Re: [Emacs-diffs] master fd8f724: * src/xdisp.c (overlay_arrows_changed_p): Fix last change.

[Eli Zaretskii]

> From: Stefan Monnier <address@hidden>
> Date: Thu, 02 Mar 2017 13:29:23 -0500
> Cc: address@hidden
> 
> > I don't think this is all there is to it, because this stuff was
> > specifically designed to support buffer-local values of overlay-arrow
> > related variables.  You will find a long discussion in Mar 2005 which
> > led to this; that discussion ended by all the interested parties
> > declaring a victory, i.e. that it was then possible to have more than
> > one overlay-arrow by using several distinct buffer-local values.
> > (Months later the ELisp manual was updated to say that it's okay to
> > use buffer-local values for these variables.)
> 
> I don't think the overlay_arrows_changed_p machinery was adapted
> correspondingly, tho.  Actually, looking at diffs around 2005, I don't
> see many related changes at all.  I haven't found that discussion yet,

That discussion starts here:

  http://lists.gnu.org/archive/html/emacs-pretest-bug/2005-03/msg00380.html