[Ecls-list] Common-Lisp question

[Goffioul Michael]

Hi,

I have a common-lisp question, maybe someone here has an answer.
I'm trying to implement a macro character ($), but I'd like different
expansion when the associated form is at the beginning of a cons or not.
So, ($f1 a b) would get me one expansion, and (func $f1 a) would get me
a different expansion. Is it possible to detect such cases in the 
macro reader function?

Thanks.
Michael.