bug#20369: Rendering problems and fill column

[Eli Zaretskii <eliz@gnu.org>]

> Date: Mon, 20 Apr 2015 05:36:54 +0300
> From: Eli Zaretskii <eliz@gnu.org>
> Cc: 20369@debbugs.gnu.org, markkarpov@opmbx.org
> 
> > From: Stefan Monnier <monnier@IRO.UMontreal.CA>
> > Cc: Mark Karpov <markkarpov@opmbx.org>, 20369@debbugs.gnu.org
> > Date: Sun, 19 Apr 2015 22:14:42 -0400
> > 
> > > with fci-mode vis-à-vis Dired.  Fci-mode puts overlays on the end of
> > > each line; when you invoke dired-revert, that function calls
> > > erase-buffer, which deletes all of the text from the buffer, but
> > > leaves the overlays, all of them now crowded at buffer position 1.
> > 
> > We could put the `evaporate' property on those overlays, maybe?
> 
> Maybe.  I really don't have a clear idea of what these overlays should
> and should not do.

Actually, no, this won't work, at least not easily, because those
overlays are empty, so they cannot have the 'evaporate' property
without, well, evaporating on the spot.