[Fontconfig] How to ignore OpenType Collection fonts

[Khaled Hosny]

On Sat, Jun 11, 2016 at 05:51:10AM +0200, Werner LEMBERG wrote:
> >> Current LilyPond has added limited OTC support.  Soon, LilyPond
> >> will be added more complete OTC support.  However, it is still
> >> limited and ignoring OTC fonts are necessary.
> > 
> > Hmm, I’d think it should be trivial for an application that support
> > font collections and CFF-based OpenType fonts to support CFF-based
> > collections, there is nothing fundamentally different here.
> 
> Well, we use ghostscript to convert PS files created by lilypond to
> PDF.  And gs has no support for OTC yet.

I tried to search for big reports about Ghostscript and OTC and didn’t
find anything.

>                                           Note that the PostScript
> format doesn't support OTCs at all (and never will).

Does it even support any other forms of font collections?

Regards,
Khaled