Fix problem with appending multiple string arguments in IE 6. Fixes #9072.

src/manipulation.js

@@ -582,7 +582,7 @@ jQuery.extend({
 			context = context.ownerDocument || context[0] && context[0].ownerDocument || document;
 		}
 
-		var ret = [];
+		var ret = [], j;
 
 		for ( var i = 0, elem; (elem = elems[i]) != null; i++ ) {
 			if ( typeof elem === "number" ) {
@@ -628,7 +628,7 @@ jQuery.extend({
 									div.childNodes :
 									[];
 
-						for ( var j = tbody.length - 1; j >= 0 ; --j ) {
+						for ( j = tbody.length - 1; j >= 0 ; --j ) {
 							if ( jQuery.nodeName( tbody[ j ], "tbody" ) && !tbody[ j ].childNodes.length ) {
 								tbody[ j ].parentNode.removeChild( tbody[ j ] );
 							}
@@ -649,8 +649,8 @@ jQuery.extend({
 			var len;
 			if ( !jQuery.support.appendChecked ) {
 				if ( elem[0] && typeof (len = elem.length) === "number" ) {
-					for ( i = 0; i < len; i++ ) {
-						findInputs( elem[i] );
+					for ( j = 0; j < len; j++ ) {
+						findInputs( elem[j] );
 					}
 				} else {
 					findInputs( elem );

test/unit/manipulation.js

@@ -227,7 +227,7 @@ test("unwrap()", function() {
 });
 
 var testAppend = function(valueObj) {
-	expect(40);
+	expect(41);
 	var defaultText = "Try them out:"
 	var result = jQuery("#first").append(valueObj("<b>buga</b>"));
 	equals( result.text(), defaultText + "buga", "Check if text appending works" );
@@ -344,6 +344,17 @@ var testAppend = function(valueObj) {
 	equals( $radio[0].checked, true, "Reappending radios uphold which radio is checked" );
 	equals( $radioNot[0].checked, false, "Reappending radios uphold not being checked" );
 	QUnit.reset();
+
+	var prev = jQuery("#sap").children().length;
+
+	jQuery("#sap").append(
+		"<span></span>",
+		"<span></span>",
+		"<span></span>"
+	);
+
+	equals( jQuery("#sap").children().length, prev + 3, "Make sure that multiple arguments works." );
+	QUnit.reset();
 }
 
 test("append(String|Element|Array&lt;Element&gt;|jQuery)", function() {