Thanks Richard,

I stand corrected. My reading of *all* of the spec also suggests
that the test should be same class, not same species for
sequenceable collections.

Anybody have an idea what the consequences would be if
the definition of #= in SequenceableCollection were tightened
to check for same class rather than same species???

John Sarkela 
[ | ] :-}>

> 
>> The ANSI spec
>> first asserts that #= should be symmetric and then that equivalent
>> objects should have identical hashes. (my paraphrase)
> 
> Then refines it to same class, size, and elements as I read it.  I would not
> however bet large sums that I am correct.
> 
>