> function f(x1, ~~~, xN) {
> if (x1 === undefined) x1 = e1;
> ~~~
> if (xN === undefined) xN = eN;
> return (function(x1, ~~~ xN) { body }).apply(this, arguments);
> }
>
Effectively sibling scopes, with a copy mechanism from the "defaults" scope
to the "body" scope. That's what I was going for originally but I wasn't
clever enough to see a natural desugaring implementation. Neat!
Kevin
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