According to the text an embed is only active if the scr attribute is missing
or the empty string. That doesn't seem right at all.
Posted from: 2001:4c28:a030:30:ac38:e38a:f07b:b6cf
User agent: Opera/9.80 (Windows NT 6.1; WOW64; U; en) Presto/2.10.229 Version/11.62
This bug was cloned to create bug 18149 as part of operation convergence.
Checked in as WHATWG revision r7389.
Check-in comment: Fix <embed>'s algorithm, since I apparently wrote this backwards.