Is there any kind of mechanism for font fallback in case the glyph is not found in a font? For instance, I'd like to write everything I can with font A, except for glyphs not found in A which should be taken from B, except for the glyphs not found in B which should be taken from C, ..., except for glyphs not found anywhere, for which a square box is drawn.
I think it could be done by specifying a fallback font loader from which a glyph can be retrieved. Then there comes the issue of "who's responsible for closing that fallback loader", but I think that can be worked around.
Is there any kind of mechanism for font fallback in case the glyph is not found in a font? For instance, I'd like to write everything I can with font A, except for glyphs not found in A which should be taken from B, except for the glyphs not found in B which should be taken from C, ..., except for glyphs not found anywhere, for which a square box is drawn.
I think it could be done by specifying a fallback font loader from which a glyph can be retrieved. Then there comes the issue of "who's responsible for closing that fallback loader", but I think that can be worked around.