bug#23137: 25.1.50; Subpixel rendering is broken when not running under gnome-session

[Eli Zaretskii]

> From: Matthew Leach <matthew@mattleach.net>
> Cc: 23137@debbugs.gnu.org
> Date: Tue, 29 Mar 2016 22:13:14 +0100
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> >> > What is "subpixel rendering"?
> >> 
> >> [1] gives an overview of what it is and the 'rgba' values in [2] show
> >> how to configure it.  I think MS use the term ClearType on their Windows
> >> platform.
> >
> > Then why do you think it's an Emacs problem?
> 
> I think it's an Emacs problem, because it is not behaving as configured,
> even though other GTK applications do.

What configuration options were supposed to tell Emacs to use subpixel
rendering?