Test of empty substring-matching attribute selectors

This test:

    http://www.w3.org/Style/Examples/013/css3-selectors-0603-empty.html

tries to test substring-matching attribute selectors ~=, |=, ^=, *=, $= 
(Selectors section 6.3[1]) with empty values, such as p[title^=""].

It assumes that such selectors are valid (i.e., not ignored) but match 
nothing. I think that is what we decided last week[2]. I'm not sure if 
we decided anything for |=, but it seems consistent to treat it the 
same way.

This test:

    http://www.w3.org/Style/Examples/013/t050801-empty-attr-01.html

is the same, except that it only tests ~= and |=, and is thus suitable 
for CSS level 2, section 5.8.1[3].

[1] http://www.w3.org/TR/css3-selectors/#attribute-selectors
[2] http://www.w3.org/2008/03/28-css-irc.html#T00-52-44
[3] http://www.w3.org/TR/CSS21/selector.html#matching-attrs



Bert
-- 
  Bert Bos                                ( W 3 C ) http://www.w3.org/
  http://www.w3.org/people/bos                               W3C/ERCIM
  bert@w3.org                             2004 Rt des Lucioles / BP 93
  +33 (0)4 92 38 76 92            06902 Sophia Antipolis Cedex, France