Shouldn't it be possible to create a very compact way of serisalizing the closures, and then using that serialization as an URL parameter? If you can uniquely

Shouldn't it be possible to create a very compact way of serisalizing the closures, and then using that serialization as an URL parameter? If you can uniquely identify the function, you can know the variables that are being closed over, so you would "just" have to serialize the function ID + list of values of the variables, and URL-encode it. Though I haven't done enough Lisp (or even Arc) to evaluate if that's doable without too much effort and fragile magics. (EDIT: clarified a bit)