:eq() behavior does not match documentation

[[email protected]…]

The selector $('foo:eq(-1)') returns the last foo, but the documentation claims this should result in an empty set.

Fiddle demonstrating behavior: ​http://jsfiddle.net/Gj5Qj/3/

Documentation: ​http://api.jquery.com/eq-selector/

Specific documentation text: "Unlike the .eq(index) method, the :eq(index) selector does not accept a negative value for index. For example, while $('li').eq(-1) selects the last li element, $('li:eq(-1)') selects nothing."

Able to reproduce in both Chrome (v19) and Firefox (v11) on Linux.

[dmethvin]

That was an intended change in 1.8, we wanted the method and the selector to have equivalent behavior. So yes the docs need to be updated.

[ajpiano]

Ported this over to ​https://github.com/jquery/api.jquery.com/issues/83 and closing this.