How can I display ligatures? (in TextMesh and/or GUIText)

I'm using a font that supports ligatures, and I'd like to display them - it there a way to turn ligatures on in Unity? (Either natively, or with something from the store?) The question applies to both GUIText and TextMeshes.

The most recent mention I can find of this is in the wishlist in 2008, so I'm hoping (but doubting) that it's been implemented.

My current hacky plan is to use Unicode characters where available. To support symbols where there is no Unicode (like the ct ligature), the only thing I can think to do is use a bitmap font, and replace a symbol I don't use (like "^") with the ligature.

I'd love to hear some better solutions from you clever folks. Thanks in advance.