Fix #13349. No need to sort simple .find() cases.

src/traversing.js

@@ -12,12 +12,13 @@ var runtil = /Until$/,
 
 jQuery.fn.extend({
 	find: function( selector ) {
-		var i, ret, self;
+		var i, ret, self,
+			len = this.length;
 
 		if ( typeof selector !== "string" ) {
 			self = this;
 			return this.pushStack( jQuery( selector ).filter(function() {
-				for ( i = 0; i < self.length; i++ ) {
+				for ( i = 0; i < len; i++ ) {
 					if ( jQuery.contains( self[ i ], this ) ) {
 						return true;
 					}
@@ -26,12 +27,12 @@ jQuery.fn.extend({
 		}
 
 		ret = [];
-		for ( i = 0; i < this.length; i++ ) {
+		for ( i = 0; i < len; i++ ) {
 			jQuery.find( selector, this[ i ], ret );
 		}
 
 		// Needed because $( selector, context ) becomes $( context ).find( selector )
-		ret = this.pushStack( jQuery.unique( ret ) );
+		ret = this.pushStack( len > 1 ? jQuery.unique( ret ) : ret );
 		ret.selector = ( this.selector ? this.selector + " " : "" ) + selector;
 		return ret;
 	},