support for jquery :has() selector?

[Zauberfisch]

$('ul:has(li)').entwine({
    onmatch: function() {
        console.log(this);
    }
});

logs the following error in my console (tested in latest FF and chrome):
"Could not parse selector - ul:has<HERE>(li)"

Would it be possible to support the :has() selector?
(I am aware that its not a css3 selector and its performance issue, still it would be nice to have :) )