Should the "default" policy be called when setAttributeNode is called with a node from the same realm?

[mbrodesser-Igalia]

Example: https://jsfiddle.net/3f2tzusq/2/

Happens currently with Chrome Dev. Presumably it shouldn't.

[koto]

Yes. Why do you think it shouldn't? It's in DOM integration set an attribute algorithm (lines 6488-6490 in the current PR).

[mbrodesser-Igalia]

Yes. Why do you think it shouldn't? It's in DOM integration set an attribute algorithm (lines 6488-6490 in the current PR).

Didn't think this through properly before. https://jsfiddle.net/c1noaysw/1/ made me think it shouldn't. However, since srcdoc is aDOMString, the default policy has to be called.

Perhaps the default policy should be able to distinguish values from the same and a different realm. Would need to think more about that.

[mbrodesser-Igalia]

Will open a new ticket for it if necessary,