.foo[bar="baz,quz"]{foobar:123;}.bar,#bar[baz="qux,foo"],#qux{foobar:456;}.baz[qux=",foo"],.baz[qux="foo,"],.baz[qux="foo,bar,baz"],.baz[qux=",foo,bar,baz,"],.baz[qux=" , foo , bar , baz , "]{foobar:789;}.qux[foo='bar,baz'],.qux[bar="baz,foo"],#qux[foo="foobar"],#qux[foo=',bar,baz, ']{foobar:012;}#foo[foo=""],#foo[bar=" "],#foo[bar=","],#foo[bar=", "],#foo[bar=" ,"],#foo[bar=" , "],#foo[baz=''],#foo[qux=' '],#foo[qux=','],#foo[qux=', '],#foo[qux=' ,'],#foo[qux=' , ']{foobar:345;}