Fix #11230. .appendTo and pals should always stack.

src/manipulation.js

@@ -512,21 +512,15 @@ jQuery.each({
 			i = 0,
 			ret = [],
 			insert = jQuery( selector ),
-			l = insert.length,
-			parent = this.length === 1 && this[0].parentNode;
+			last = insert.length - 1;
 
-		if ( (parent == null || parent && parent.nodeType === 11 && parent.childNodes.length === 1) && l === 1 ) {
-			insert[ original ]( this[0] );
-			return this;
-		} else {
-			for ( ; i < l; i++ ) {
-				elems = ( i > 0 ? this.clone(true) : this ).get();
+			for ( ; i <= last; i++ ) {
+				elems = i === last ? this : this.clone(true);
 				jQuery( insert[i] )[ original ]( elems );
-				ret = ret.concat( elems );
+				core_push.apply( ret, elems.get() );
 			}
 
 			return this.pushStack( ret );
-		}
 	};
 });
 

test/unit/manipulation.js

@@ -2092,10 +2092,10 @@ test( "Ensure oldIE creates a new set on appendTo (#8894)", function() {
 
 	expect( 5 );
 
-	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("<div/>").clone().addClass("test").appendTo("<div/>").end().end().hasClass("test"), false, "Check jQuery.fn.appendTo after jQuery.clone" );
+	strictEqual( jQuery("<div/>").find("p").end().addClass("test").appendTo("<div/>").end().end().hasClass("test"), false, "Check jQuery.fn.appendTo after jQuery.fn.find" );
+	strictEqual( jQuery("<div/>").text("test").addClass("test").appendTo("<div/>").end().end().hasClass("test"), false, "Check jQuery.fn.appendTo after jQuery.fn.text" );
+	strictEqual( jQuery("<bdi/>").clone().addClass("test").appendTo("<div/>").end().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" );
 });
 
@@ -2292,7 +2292,7 @@ test( "insertAfter, insertBefore, etc do not work when destination is original e
 			"<ul id='test4087-complex'><li class='test4087'><div>c1</div>h1</li><li><div>c2</div>h2</li></ul>",
 			"<div id='test4087-simple'><div class='test4087-1'>1<div class='test4087-2'>2</div><div class='test4087-3'>3</div></div></div>",
 			"<div id='test4087-multiple'><div class='test4087-multiple'>1</div><div class='test4087-multiple'>2</div></div>"
-		] ).appendTo( "#qunit-fixture" );
+		].join("") ).appendTo( "#qunit-fixture" );
 
 		// complex case based on http://jsfiddle.net/pbramos/gZ7vB/
 		jQuery("#test4087-complex div")[ name ]("#test4087-complex li:last-child div:last-child");