>>24
The language is defined as such. It doesn't have to fail. However, behaviour is unspecified, and doing shit is still illegal, so I don't see much of a problem. Either way, XHTML (and most versions/proposals of HTML) suck and are flawed for other reasons, such as stupid restrictions on where to put STYLE and LINK tags (which bite for complex application frameworks), case-sensitivity (lol XML), etc.