I'm using the selectors :input[value] and :input:not([value]), and they appear to be returning the opposite of what is expected.

Suppose there is a page with one element on it: <input name="a">

• :input[value] selects the element.
• :input:not([value]) does not select the element.

Using input instead of :input returns the expected result:

• input[value] does not select the element.
• input:not([value]) selects the element.

Test case: http://jsfiddle.net/jmabey/f9fH7/

With 1.7.1:

• Reproducible in Firefox 3.6.26 and 10.0.1, Chrome 17, Opera 11.61, Safari 5.1.2, IE 7-9
• IE 7 and 8's results are inconsistent with other browsers
• Operating systems: Ubuntu 11.10 and Windows 7

With 1.6.4:

• Works as expected in same browsers