Incorrect .is() behavior when checking for attribute with no value

[alexanderkahn@…]

Given this markup:

<div data-hi></div> <div data-hi></div>

Running this code:

$('div').is('[data-hi]');

should return true, since .is() returns true if any member of the collection matches its query. But it returns false.

This is illustrated here:  http://jsfiddle.net/ujP2Y/8/

See also #5930.

[Alex Kahn <alexanderkahn@…>]

Note that this bug only happens if the there are multiple elements in the collection matching the attribute query. If just one element has the attribute, .is() works as expected.

[rwaldron]

Confirmed;

 http://jsfiddle.net/rwaldron/ujP2Y/10/

[ajpiano]

This fiddle illustrates just how anomalous this is, for anyone who is curious.  http://jsfiddle.net/ajpiano/qUwL7/

[jitter]

Same test as by ajpiano but more browsers tested  http://www.jsfiddle.net/jitter/CnJPA/

[john]

Duplicate of #5637.