Brendan Eich wrote:
I can only think of cases (including Claude Pache’s pro-enumerability
example) where I would want to copy *all* own properties.
Why do you want an array's .length to be copied?
Or in Claude's example, why should a non-enumerable _parent be copied?
Claude's words about the advantage of non-enumerable _parent *not* being
copied were pretty clear. He was not advocating *all* own properties.
http://esdiscuss.org/topic/enumerability#content-2
/be
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