Is it possible to apply multiple coupon codes to an order?

[anstuff]

We would want to let user apply as many coupon codes as he wants to his order and get discount associated with each of those coupons.  Is it possible?
Currently, when I apply a different coupon code then the one earlier applied, it gives discount ONLY for the last coupon code applied.  Is there a way it would apply promotions associated with both coupon codes?

[trevor]

One way you could do it is to get Order Totals for the order a multiple number of times (i.e. once for each coupon) and save the promotion order totals returned. Then you would need to edit the order to add all of the promotion order totals and edit the actual Total order total to reflect the discounted price.