Fix #8894. Ensure `.appendTo` creates a new set in oldIE.

src/core.js

@@ -801,7 +801,7 @@ jQuery.extend({
 		return proxy;
 	},
 
-	// Mutifunctional method to get and set values to a collection
+	// Multifunctional method to get and set values of a collection
 	// The value/s can optionally be executed if it's a function
 	access: function( elems, fn, key, value, chainable, emptyGet, pass ) {
 		var exec,

src/manipulation.js

@@ -40,7 +40,8 @@ var nodeNames = "abbr|article|aside|audio|bdi|canvas|data|datalist|details|figca
 		area: [ 1, "<map>", "</map>" ],
 		_default: [ 0, "", "" ]
 	},
-	safeFragment = createSafeFragment( document );
+	safeFragment = createSafeFragment( document ),
+	fragmentDiv = safeFragment.appendChild( document.createElement("div") );
 
 wrapMap.optgroup = wrapMap.option;
 wrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead;
@@ -529,7 +530,7 @@ jQuery.each({
 			insert = jQuery( selector ),
 			parent = this.length === 1 && this[0].parentNode;
 
-		if ( parent && parent.nodeType === 11 && parent.childNodes.length === 1 && insert.length === 1 ) {
+		if ( (parent == null || parent && parent.nodeType === 11 && parent.childNodes.length === 1) && insert.length === 1 ) {
 			insert[ original ]( this[0] );
 			return this;
 		} else {
@@ -563,24 +564,21 @@ function fixDefaultChecked( elem ) {
 	}
 }
 
-// Derived From: http://www.iecss.com/shimprove/javascript/shimprove.1-0-1.js
-function shimCloneNode( elem ) {
-	var div = document.createElement( "div" );
-	safeFragment.appendChild( div );
-
-	div.innerHTML = elem.outerHTML;
-	return div.firstChild;
-}
-
 jQuery.extend({
 	clone: function( elem, dataAndEvents, deepDataAndEvents ) {
 		var srcElements,
 			destElements,
 			i,
-			// IE<=8 does not properly clone detached, unknown element nodes
-			clone = jQuery.support.html5Clone || jQuery.isXMLDoc(elem) || !rnoshimcache.test( "<" + elem.nodeName + ">" ) ?
-				elem.cloneNode( true ) :
-				shimCloneNode( elem );
+			clone;
+
+		if ( jQuery.support.html5Clone || jQuery.isXMLDoc(elem) || !rnoshimcache.test( "<" + elem.nodeName + ">" ) ) {
+			clone = elem.cloneNode( true );
+
+		// IE<=8 does not properly clone detached, unknown element nodes
+		} else {
+			fragmentDiv.innerHTML = elem.outerHTML;
+			fragmentDiv.removeChild( clone = fragmentDiv.firstChild );
+		}
 
 		if ( (!jQuery.support.noCloneEvent || !jQuery.support.noCloneChecked) &&
 				(elem.nodeType === 1 || elem.nodeType === 11) && !jQuery.isXMLDoc(elem) ) {

test/unit/manipulation.js

@@ -571,7 +571,7 @@ test("IE8 serialization bug", function () {
 test("html() object element #10324", function() {
 	expect( 1 );
 
-	var object = jQuery("<object id='object2'><param name='object2test' value='test'></param></object>​").appendTo("#qunit-fixture"),
+	var object = jQuery("<object id='object2'><param name='object2test' value='test'></param></object>?").appendTo("#qunit-fixture"),
 			clone = object.clone();
 
 	equal( clone.html(), object.html(), "html() returns correct innerhtml of cloned object elements" );
@@ -1776,3 +1776,11 @@ test("Guard against exceptions when clearing safeChildNodes", function() {
 
 	ok( div && div.jquery, "Created nodes safely, guarded against exceptions on safeChildNodes[ -1 ]" );
 });
+
+test("Ensure oldIE creates a new set on appendTo (#8894)", function() {
+	strictEqual( jQuery("<div/>").clone().addClass("test").appendTo("<div/>").end().hasClass("test"), false, "Check jQuery.fn.appendTo after jQuery.clone" );
+	strictEqual( jQuery("<div/>").find("p").end().addClass("test").appendTo("<div/>").end().hasClass("test"), false, "Check jQuery.fn.appendTo after jQuery.fn.find" );
+	strictEqual( jQuery("<div/>").text("test").addClass("test").appendTo("<div/>").end().hasClass("test"), false, "Check jQuery.fn.appendTo after jQuery.fn.text" );
+	strictEqual( jQuery("<bdi/>").clone().addClass("test").appendTo("<div/>").end().hasClass("test"), false, "Check jQuery.fn.appendTo after clone html5 element" );
+	strictEqual( jQuery("<p/>").appendTo("<div/>").end().length, jQuery("<p>test</p>").appendTo("<div/>").end().length, "Elements created with createElement and with createDocumentFragment should be treated alike" );
+});