Fix jquery#4087. insertAfter, insertBefore, etc do not work if origin and destination are same element. Close jquerygh-1068.

Author: PaulBRamos

src/manipulation.js

@@ -254,7 +254,7 @@ jQuery.fn.extend({
 		// Make sure that the elements are removed from the DOM before they are inserted
 		// this can help fix replacing a parent with child elements
 		if ( !isFunc && typeof value !== "string" ) {
-			value = jQuery( value ).detach();
+			value = jQuery( value ).not( this ).detach();
 		}
 
 		return this.domManip( [ value ], true, function( elem ) {
@@ -303,7 +303,7 @@ jQuery.fn.extend({
 		if ( this[0] ) {
 			doc = this[0].ownerDocument;
 			fragment = doc.createDocumentFragment();
-			jQuery.clean( args, doc, fragment );
+			jQuery.clean( args, doc, fragment, undefined, this );
 			first = fragment.firstChild;
 
 			if ( fragment.childNodes.length === 1 ) {
@@ -619,7 +619,7 @@ jQuery.extend({
 		return clone;
 	},
 
-	clean: function( elems, context, fragment, scripts ) {
+	clean: function( elems, context, fragment, scripts, selection ) {
 		var elem, j, tmp, tag, wrap, tbody,
 			ret = [],
 			i = 0,
@@ -714,7 +714,11 @@ jQuery.extend({
 				safe = jQuery.contains( elem.ownerDocument, elem );
 
 				// Append to fragment
-				fragment.appendChild( elem );
+				// #4087 - If origin and destination elements are the same, and this is
+				// that element, do not append to fragment
+				if ( !( selection && jQuery.inArray( elem, selection ) !== -1 ) ) {
+					fragment.appendChild( elem );
+				}
 				tmp = getAll( elem, "script" );
 
 				// Preserve script evaluation history

test/unit/manipulation.js

@@ -2274,3 +2274,37 @@ test( "wrapping scripts (#10470)", function() {
 	strictEqual( script.parentNode, jQuery("#qunit-fixture > b")[ 0 ], "correctly wrapped" );
 	jQuery( script ).remove();
 });
+
+test( "insertAfter, insertBefore, etc do not work when destination is original element. Element is removed (#4087)", function() {
+
+	expect( 10 );
+
+	var elems;
+
+	jQuery.each([
+		"appendTo",
+		"prependTo",
+		"insertBefore",
+		"insertAfter",
+		"replaceAll"
+	], function( index, name ) {
+		elems = jQuery( [
+			"<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" );
+
+		// complex case based on http://jsfiddle.net/pbramos/gZ7vB/
+		jQuery("#test4087-complex div")[ name ]("#test4087-complex li:last-child div:last-child");
+		equal( jQuery("#test4087-complex li:last-child div").length, name === "replaceAll" ? 1 : 2, name +" a node to itself, complex case." );
+
+		// simple case
+		jQuery( ".test4087-1" )[ name ](".test4087-1");
+		equal( jQuery(".test4087-1").length, 1, name +" a node to itself, simple case." );
+
+		// clean for next test
+		jQuery("#test4087-complex").remove();
+		jQuery("#test4087-simple").remove();
+		jQuery("#test4087-multiple").remove();
+	});
+});