List and cons equality broken

[alandipert]

Equality comparison of lists and conses seems to be broken:

=> (eq '(1 2 3) '(1 2 4))
true
=> (eq (cons 1 2) (cons 1 3))
true

[catharinejm]

Multiple-valued eq is broken too:

=> (eq 1 1 2)
true

I think both can be fixed at once.

[catharinejm]

So... I'm thinking that #eq should only be true if the objects' exist in the same memory locations. #equal (or something, maybe #=) could do value comparisons.

Integers and symbols should still work as expected, so long as the environment implementation works and doesn't create dupes... We may need to included arbitrary quoted forms among those that get hashed and only created once to match this behavior: http://www.lispworks.com/documentation/HyperSpec/Body/f_eq.htm ...but it's not that important right now.