X-Git-Url: http://git.asbjorn.it/?a=blobdiff_plain;f=src%2Ftraversing.js;h=8f1e5eb5017b76dbdb6379b79be5eb8cd516b7e0;hb=4b5a680f776ee2582e2c1f85b7b0cd9a95254dc3;hp=f46820f849d913a3fe95942eb58c52d31d5d1ca8;hpb=d6991fa273515a8503692324499edcc71b5c3f64;p=jquery.git

diff --git a/src/traversing.js b/src/traversing.js
index f46820f..8f1e5eb 100644
--- a/src/traversing.js
+++ b/src/traversing.js
@@ -1,4 +1,4 @@
-jQuery.winnow = function( elements, qualifier, keep ) {
+var winnow = function( elements, qualifier, keep ) {
 	if(jQuery.isFunction( qualifier )) {
 		return jQuery.grep(elements, function(elem, i) {
 			return !!qualifier.call( elem, i ) === keep;
@@ -44,11 +44,11 @@ jQuery.fn.extend({
 	},
 
 	not: function( selector ) {
-		return this.pushStack( jQuery.winnow(this, selector, false), "not", selector);
+		return this.pushStack( winnow(this, selector, false), "not", selector);
 	},
 
 	filter: function( selector ) {
-		return this.pushStack( jQuery.winnow(this, selector, true), "filter", selector );
+		return this.pushStack( winnow(this, selector, true), "filter", selector );
 	},
 
 	closest: function( selector, context ) {
@@ -69,16 +69,28 @@ jQuery.fn.extend({
 	},
 
 	add: function( selector ) {
-		return this.pushStack( jQuery.unique( jQuery.merge(
-			this.get(),
-			typeof selector === "string" ?
+		var set = typeof selector === "string" ?
 				jQuery( selector ) :
-				jQuery.makeArray( selector )
-		)));
+				jQuery.makeArray( selector ),
+			all = jQuery.merge( this.get(), set );
+
+		return this.pushStack( set[0] && (set[0].setInterval || set[0].nodeType === 9 || (set[0].parentNode && set[0].parentNode.nodeType !== 11)) ?
+			jQuery.unique( all ) :
+			all );
 	},
 
 	eq: function( i ) {
-		return this.slice( i, +i + 1 );
+		return i === -1 ?
+			this.slice( i ) :
+			this.slice( i, +i + 1 );
+	},
+
+	first: function() {
+		return this.eq( 0 );
+	},
+
+	last: function() {
+		return this.eq( -1 );
 	},
 
 	slice: function() {
@@ -115,9 +127,16 @@ jQuery.each({
 	jQuery.fn[ name ] = function( selector ) {
 		var ret = jQuery.map( this, fn );
 
-		if ( selector && typeof selector == "string" )
+		if ( selector && typeof selector === "string" ) {
 			ret = jQuery.multiFilter( selector, ret );
+		}
+
+		ret = this.length > 1 ? jQuery.unique( ret ) : ret;
+
+		if ( name === "parents" && this.length > 1 ) {
+			ret = ret.reverse();
+		}
 
-		return this.pushStack( jQuery.unique( ret ), name, selector );
+		return this.pushStack( ret, name, selector );
 	};
 });