Yup.  It's been a known issue
(http://lists.squeak.org/pipermail/squeak-dev/2012-August/165622.html)
but it has not been pushed to the package.

On Wed, Oct 31, 2012 at 1:53 PM, Douglas McPherson <djm1329 at san.rr.com> wrote:
> Hi,
>
> I think there's a small problem with the semantic predicate of the range
> rule:
>
> range :a :b =
>
> anything:x ?[a <= x & x <= b] -> [x]
>
> A pair of parenthesis fixes the problem:
>
> range :a :b =
>
> anything:x ?[a <= x & (x <= b)] -> [x]
>
> Thanks,
> Doug
>
>
>



-- 
-- Yoshiki