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[Bug 20397] [Custom]: Consider changing elementupgrade to a mutation observer

From: <bugzilla@jessica.w3.org>
Date: Fri, 14 Dec 2012 23:30:36 +0000
To: public-webapps-bugzilla@w3.org
Message-ID: <bug-20397-2532-1kX9zpSdMW@http.www.w3.org/Bugs/Public/>
https://www.w3.org/Bugs/Public/show_bug.cgi?id=20397

--- Comment #9 from Olli Pettay <bugs@pettay.fi> ---
Mutation observer is about observing changes to DOM.
Special cases make the API inconsistent, and inconsistency in APIs should
be avoided.
If you don't want to get mutation records, don't observe those elements.

What we could do perhaps is to add some kind of filter to MutationObserver,
but not sure it would help much in this case.

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