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diff --git a/js/src/tests/js1_2/regexp/alphanumeric.js b/js/src/tests/js1_2/regexp/alphanumeric.js
new file mode 100644
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@@ -0,0 +1,130 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Mozilla Communicator client code, released
+ * March 31, 1998.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1998
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+
+/**
+   Filename:     alphanumeric.js
+   Description:  'Tests regular expressions with \w and \W special characters'
+
+   Author:       Nick Lerissa
+   Date:         March 10, 1998
+*/
+
+var SECTION = 'As described in Netscape doc "Whats new in JavaScript 1.2"';
+var VERSION = 'no version';
+startTest();
+var TITLE   = 'RegExp: \\w and \\W';
+
+writeHeaderToLog('Executing script: alphanumeric.js');
+writeHeaderToLog( SECTION + " " + TITLE);
+
+var non_alphanumeric = "~`!@#$%^&*()-+={[}]|\\:;'<,>./?\f\n\r\t\v " + '"';
+var alphanumeric     = "_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890";
+
+// be sure all alphanumerics are matched by \w
+new TestCase ( SECTION,
+	       "'" + alphanumeric + "'.match(new RegExp('\\w+'))",
+	       String([alphanumeric]), String(alphanumeric.match(new RegExp('\\w+'))));
+
+// be sure all non-alphanumerics are matched by \W
+new TestCase ( SECTION,
+	       "'" + non_alphanumeric + "'.match(new RegExp('\\W+'))",
+	       String([non_alphanumeric]), String(non_alphanumeric.match(new RegExp('\\W+'))));
+
+// be sure all non-alphanumerics are not matched by \w
+new TestCase ( SECTION,
+	       "'" + non_alphanumeric + "'.match(new RegExp('\\w'))",
+	       null, non_alphanumeric.match(new RegExp('\\w')));
+
+// be sure all alphanumerics are not matched by \W
+new TestCase ( SECTION,
+	       "'" + alphanumeric + "'.match(new RegExp('\\W'))",
+	       null, alphanumeric.match(new RegExp('\\W')));
+
+var s = non_alphanumeric + alphanumeric;
+
+// be sure all alphanumerics are matched by \w
+new TestCase ( SECTION,
+	       "'" + s + "'.match(new RegExp('\\w+'))",
+	       String([alphanumeric]), String(s.match(new RegExp('\\w+'))));
+
+s = alphanumeric + non_alphanumeric;
+
+// be sure all non-alphanumerics are matched by \W
+new TestCase ( SECTION,
+	       "'" + s + "'.match(new RegExp('\\W+'))",
+	       String([non_alphanumeric]), String(s.match(new RegExp('\\W+'))));
+
+// be sure all alphanumerics are matched by \w (using literals)
+new TestCase ( SECTION,
+	       "'" + s + "'.match(/\w+/)",
+	       String([alphanumeric]), String(s.match(/\w+/)));
+
+s = alphanumeric + non_alphanumeric;
+
+// be sure all non-alphanumerics are matched by \W (using literals)
+new TestCase ( SECTION,
+	       "'" + s + "'.match(/\W+/)",
+	       String([non_alphanumeric]), String(s.match(/\W+/)));
+
+s = 'abcd*&^%$$';
+// be sure the following test behaves consistently
+new TestCase ( SECTION,
+	       "'" + s + "'.match(/(\w+)...(\W+)/)",
+	       String([s , 'abcd' , '%$$']), String(s.match(/(\w+)...(\W+)/)));
+
+var i;
+
+// be sure all alphanumeric characters match individually
+for (i = 0; i < alphanumeric.length; ++i)
+{
+  s = '#$' + alphanumeric[i] + '%^';
+  new TestCase ( SECTION,
+		 "'" + s + "'.match(new RegExp('\\w'))",
+		 String([alphanumeric[i]]), String(s.match(new RegExp('\\w'))));
+}
+// be sure all non_alphanumeric characters match individually
+for (i = 0; i < non_alphanumeric.length; ++i)
+{
+  s = 'sd' + non_alphanumeric[i] + String((i+10) * (i+10) - 2 * (i+10));
+  new TestCase ( SECTION,
+		 "'" + s + "'.match(new RegExp('\\W'))",
+		 String([non_alphanumeric[i]]), String(s.match(new RegExp('\\W'))));
+}
+
+test();