var runtil = /Until$/, rparentsprev = /^(?:parents|prev(?:Until|All))/, isSimple = /^.[^:#\[\.,]*$/, POS = jQuery.expr.match.globalPOS, // methods guaranteed to produce a unique set when starting from a unique set guaranteedUnique = { children: true, contents: true, next: true, prev: true }; jQuery.fn.extend({ find: function( selector ) { var i, l, length, n, r, ret, self = this; if ( typeof selec