The computed style section should collapse multiple properties to shorthand properties when applicable. For instance:
could be collapsed to:
margin: 0px 0px 4px 0px;
This depends on bug 13658. This was working to some extent before (sans bug 13658), but I think that support was removed.
This will break the computed style trace implemented by firstname.lastname@example.org. I will defer the decision to him.
Querying shorhands from getComputedStyle now works. Maybe it's time to revisit the problem.
Pavel any thought?
Seems confusing when matching to style-tracing https://bugs.webkit.org/show_bug.cgi?id=20691
On trunk, whether shorthands are used follows the original style rules. This is because we link back to the rules inside the resource.