Re: [Patch]: Allow overlay arrows to be inserted before the text at column zero rather than splatting it.

[Alan Mackenzie]

Hello, Noam.

On Sun, Aug 18, 2019 at 15:30:11 -0400, Noam Postavsky wrote:
> On Sun, 18 Aug 2019 at 14:44, Alan Mackenzie <address@hidden> wrote:

> > I don't think there's anything else in Emacs at the moment that could
> > take its place.  The essence here is being able to insert "=>" onto the
> > display _without_ disturbing the horizontal alignment, as needed by
> > debuggers.  Maybe, in addition to before-strings and after-strings we
> > need "overlay-strings" (with a better name than that), which would cover
> > up the underlying text.  Or do we already have something like that?

> I think the 'display' property would work for that.

Yes.  Thanks!  I didn't know that.

So we could supersede the (current) overlay arrow with a mechanism using
the display text property or overlay.

-- 
Alan Mackenzie (Nuremberg, Germany).