Re: When and how to register various font backends

[Andy Moreton]

On Fri 14 Jun 2019, Eli Zaretskii wrote:

> I'm not sure removing x (and gdi on Windows) is a good idea, even in
> Emacs 28.  I understand (more accurately, was told very recently) that
> HarfBuzz was designed to be able to work with any font, not just OTF,
> but I'm not sure our integration of HarfBuzz allows that.  We should
> actively test that with old fonts, like bitmapped fonts and BDF,
> before we make the decision.  For example, I suspect the methods we
> currently use for finding fonts suitable for HarfBuzz filter out
> non-OTF fonts (at least on Windows, this is definitely so).

A quick test using the "System" font on Windows confirms that:
gdi:-raster-System-bold-normal-normal-sans-16-*-*-*-p-*-iso8859-1

    AndyM