[Bug 20131] [MutationObservers] Unclear whether unique record instances are required in 5.3.2 "Queuing a mutation record"

https://www.w3.org/Bugs/Public/show_bug.cgi?id=20131

--- Comment #13 from Olli Pettay <bugs@pettay.fi> ---
(In reply to comment #12)
> In your example, neither are shared between A and B. A sees |record| and B
> sees |recordWithOldValue|.
Why? Both observers should get 2 records. One record is with oldValue, one
without. But A should never see record with oldValue, just similar record which
has empty old value.

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Received on Wednesday, 28 November 2012 22:13:53 UTC