David Herman wrote:
So I favor ?? as well as both ||= and ??=.

As for null, I can see how there's confusion about whether to use null vs undefined, and 
so I can see why CoffeeScript would just try to blur the distinction between them. But I 
think by sticking to the simpler semantics it will help clarify the distinction. The JS 
semantics currently treats only undefined as "no value" and it would continue 
to do so.

I agree on all this.

I'll update the strawman soon.

/be
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