[css3-background] box-shadow and border-break

http://dev.w3.org/csswg/css3-background/ says under box-shadow:

> If an element has multiple boxes, all of them get drop shadows, but shadows
> are only drawn where borders would also be drawn, see 'border-break<http://dev.w3.org/csswg/css3-background/#border-break>
> '.
>

This doesn't make any sense to me. The shadows are shadows of the
border-box, not shadows of the borders themselves. There's no way to "not
draw" a shadow on one side of the box when we're drawing a shadow of the box
rectangle.

I suggest this sentence just be removed. If it's not removed, someone please
give an example of how it would be applied, preferably by describing the
rendering of this attached testcase.

Thanks,
Rob
-- 
"He was pierced for our transgressions, he was crushed for our iniquities;
the punishment that brought us peace was upon him, and by his wounds we are
healed. We all, like sheep, have gone astray, each of us has turned to his
own way; and the LORD has laid on him the iniquity of us all." [Isaiah
53:5-6]