> *blech* to ES5's enumerable stuff not having $break or similar
> functionality.  I've just read the forEach section of the draft spec
> from a while back, and I'm not seeing a discussion of exception
> handling.  I haven't delved deep, though -- do you know offhand how
> exceptions in the callback function are handled?  E.g, can one
> implement one's own $break handling, or are exceptions eaten?

Exceptions aren't eaten.

> Re setInterval and setTimeout, how do you see implementing #delay or
> similar without using them?

You can't.

> Or do you not see it, e.g., a pure LANG
> version of Prototype wouldn't have Function#defer.

Maybe Function#defer would be defined only if window.setTimeout was
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