This is an archived snapshot of W3C's public bugzilla bug tracker, decommissioned in April 2019. Please see the home page for more details.
According to HTML5 spec http://dev.w3.org/html5/spec/elements.html#htmlelement , non-readonly attribute returns DOMString instead of DOMString?. So we might want to use DOMString for 'pseudo' attribute also. In that case, it should return empty string instead of null. Because of this difference, we cannot use [Reflect] in this WebKit bug. https://bugs.webkit.org/show_bug.cgi?id=100831
http://dvcs.w3.org/hg/webcomponents/rev/229cda7a6d0c