On Wed, Jun 20, 2012 at 4:27 PM, David Kastrup <d...@gnu.org> wrote: > Andy Wingo <wi...@pobox.com> writes: > > If the Scheme standard states that > > (and (pair? x) (not (eq? (car x) (car x)))) > > can return #t in a conforming implementation, that means that the > standard failed to do its job for weeding out implementations with > unusable behavior.
The standard did its job by defining eqv? Do a (define eq? eqv?) at the start of your programs and you have what you are asking for.
