Comment 32 for bug 501393

I think it's almost certainly too late for 1.9.1. A set of tests would be great in the service of changing that. There isn't a matter of "switching anything over" since it's the same API, it'll just be cleaner/nicer/better integrated.

As for ui-review, if it's now identical for the interaction model, and isn't requiring string changes because the behaviour is different, then ui-r=me.