MacBook: Possible to use built-in mic but also Apple headphones?

[Tofer]

Jimmypoo wrote:
should be independently selectable. I use it like you prefer.

I would have thought so, too, but it doesn't seem to be. I'm not sure how long Macs have supported the mic-with-headphones setup through the headphone jack; I know that my circa-2007 macbook didn't have the capability.