Patty is a tiny pattern matcher for picolisp. It is not extensible.
It supports the following patterns:
literals, list, ?, call, and, or
To match the tail of a list, use a dotted list pattern, eg:
(patty (list 1 2 3 4)
((list X Y . Z) Z))
Evaluates to (3 4). Patty tries to accomodate picolisp's
interpreted idioms, but since I spend most of my time in compiled,
lexically scoped Lisps it may contain unusual code. Let me know if
you find any!