As of jquery 1.9 the value selector in square brackets no longer works input[value="blah"], is this by design?

As of jquery 1.9 the value selector in square brackets no longer works input[value="blah"], is this by design?

Hi,
As of jquery 1.9 the value selector in square brackets no longer works [value="0"], is this by design? The code below I use to find out the number of textboxes that have values not equal to zero (or blank) no longer works.
$(':text', '#someid').not('[value=""], [value="0"]').length;

I'm just trying to find out if this is a bug with my code or a bug in 1.9. Any help would be great.
Thanks
Daniel