Allen Wirfs-Brock wrote:
To me, adding let in combination with multiple ifs feels like a significant 
extension to what was in the original proposal that was accepted for ES6.  It 
seems like the sort of proposal change that should be presented at a TC39 
meeting.

Jason did propose (for|let|if)+, see

http://wiki.ecmascript.org/doku.php?id=proposals:iterators_and_generators#comprehensions

This was missed when Dave carried things over to the new wiki namespaces. It has been discussed at TC39 meetings.

Asserting significance won't do. Andreas and I have agreed with Jason that the desugaring is straightforward in all cases and you haven't responded directly to that argument. We have lots of detailing to do for ES6, and this is not out of line with other missed or overlooked problems in proposals.

/be
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