Added an improvement to quickExpr and some more tests for jQuery('html'). Fixes #4979.

src/core.js

@@ -20,7 +20,7 @@ var jQuery = function( selector, context ) {
 
 	// A simple way to check for HTML strings or ID strings
 	// (both of which we optimize for)
-	quickExpr = /^[^<]*(<(.|\s)+>)[^>]*$|^#([\w-]+)$/,
+	quickExpr = /^[^<]*(<[\w\W]+>)[^>]*$|^#([\w-]+)$/,
 
 	// Is it a simple selector
 	isSimple = /^.[^:#\[\.,]*$/,
@@ -70,12 +70,12 @@ jQuery.fn = jQuery.prototype = {
 
 				// HANDLE: $("#id")
 				} else {
-					elem = document.getElementById( match[3] );
+					elem = document.getElementById( match[2] );
 
 					if ( elem ) {
 						// Handle the case where IE and Opera return items
 						// by name instead of ID
-						if ( elem.id !== match[3] ) return rootjQuery.find( selector );
+						if ( elem.id !== match[2] ) return rootjQuery.find( selector );
 
 						// Otherwise, we inject the element directly into the jQuery object
 						this.length++;

test/unit/core.js

@@ -303,7 +303,7 @@ test("isXMLDoc - XML", function() {
 }
 
 test("jQuery('html')", function() {
-	expect(8);
+	expect(13);
 
 	reset();
 	jQuery.foo = false;
@@ -313,6 +313,14 @@ test("jQuery('html')", function() {
 	jQuery("body").append("<script>jQuery.foo='test';</script>");
 	ok( jQuery.foo, "Executing a scripts contents in the right context" );
 
+	// Test multi-line HTML
+	var div = jQuery("<div>\r\nsome text\n<p>some p</p>\nmore text\r\n</div>")[0];
+	equals( div.nodeName.toUpperCase(), "DIV", "Make sure we're getting a div." );
+	equals( div.firstChild.nodeType, 3, "Text node." );
+	equals( div.lastChild.nodeType, 3, "Text node." );
+	equals( div.childNodes[1].nodeType, 1, "Paragraph." );
+	equals( div.childNodes[1].firstChild.nodeType, 3, "Paragraph text." );
+
 	reset();
 	ok( jQuery("<link rel='stylesheet'/>")[0], "Creating a link" );