Bind actions to component root from calling context

I’d like to be able to bind an action to a component in the same way that it can be bound to an element.

One would assume that action, like class, would engage special behaviour as a reserved word in the WTFBars DSL, but apparently it is simply passed through as a property reference (twiddle).

So I could hack the Ember defaults by reopening the base Component pseudo-class and extending it with special behaviour to bind the action to its root node, but this would seem all sorts of fragile.

Any idea on good approaches to this?