Support default font for bold/italic style?

I don't know if this feature has been implemented or not. I just recently applying OpenSans-Regular.ttf as global default, then all bold TextView turned to normal (non-bold style). I wish there is a built-in and clean way to provide default bold font file (e.g. OpenSans-Bold.ttf) when used by TextView, perhaps by checking it in TextView#getTypeface().isBold().

I think this feature will come in handy because it will eliminate the need to apply custom style one by one to all bold/italic texts.

Thanks