Validator incorrectly reports validity for case of escaped final close-) in url()

Test case checked using direct input mode, grammar CSS2 selected:

Test cases :

element { background-image: url(myimage\) ; }

I believe that the above example is illegal, if my reading of CSS 2.1 and
CSS 2 is correct, yet the validator reports no error.

Reasoning: the escaped close-) should be treated as part of the contents of
the url, and an additional closing-) is still required. See the production
for "url" in CSS2 section D.2.


Regards,

Cecil Ward.