Load a set of fonts in the fontmap that can be used to render a font matching @desc.
the PangoContext the font will be used with
a PangoFontDescription describing the font to load
a PangoLanguage the fonts will be used for
the newly allocated PangoFontset loaded, or %NULL if no font matched.
See Implementation
Load a set of fonts in the fontmap that can be used to render a font matching @desc.