Note that even if we accept we should clip box-shadows at a border-box edge
where a break occurred, there's still an unresolved question about the
rendering of my test-case: should the box-shadow for the first box of the
span actually be rendered on the second line? If we try to faithfully stick
to the 'slice' concept of border-break:none, I think it would; we'd be
slicing at the right border-edge of the first box, and everything to the
right of that edge (including the first box's shadow) should be rendered on
the second line. This would make the implementation a good bit more
complicated than simple clipping, though.
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]