In the 23feb09 draft, arguments objects have a [[Class]] of "Object" and inherit their toString property from Array.prototype. Array.prototype.toString in effect simply does "return this.join();". However, Array.prototype.toString is not generic (it insists that its this have [[Class]] "Array") even though Array.prototype.join() is generic. Altogether, by the 23feb09 draft, attempting to print an arguments object must result in a throw. I doubt this is what anyone intends. Could we simply make Array.prototype.toString generic, so that the it works when inherited?
Btw, I notice on Safari that the [[Class]] of an arguments object is "Arguments". Given how weird the arguments object is, if it is not too late, I think Safari's special [[Class]] value would be a good idea. -- Cheers, --MarkM
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