--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/jdk.internal.opt/share/classes/jdk/internal/joptsimple/OptionalArgumentOptionSpec.java	Tue Jan 26 09:18:51 2016 +0000
@@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 2009, 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file:
+ *
+ * The MIT License
+ *
+ * Copyright (c) 2004-2014 Paul R. Holser, Jr.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+package jdk.internal.joptsimple;
+
+import java.util.Collection;
+
+/**
+ * Specification of an option that accepts an optional argument.
+ *
+ * @param <V> represents the type of the arguments this option accepts
+ * @author <a href="mailto:pholser@alumni.rice.edu">Paul Holser</a>
+ */
+class OptionalArgumentOptionSpec<V> extends ArgumentAcceptingOptionSpec<V> {
+    OptionalArgumentOptionSpec( String option ) {
+        super( option, false );
+    }
+
+    OptionalArgumentOptionSpec( Collection<String> options, String description ) {
+        super( options, false, description );
+    }
+
+    @Override
+    protected void detectOptionArgument( OptionParser parser, ArgumentList arguments, OptionSet detectedOptions ) {
+        if ( arguments.hasMore() ) {
+            String nextArgument = arguments.peek();
+
+            if ( !parser.looksLikeAnOption( nextArgument ) )
+                handleOptionArgument( parser, detectedOptions, arguments );
+            else if ( isArgumentOfNumberType() && canConvertArgument( nextArgument ) )
+                addArguments( detectedOptions, arguments.next() );
+            else
+                detectedOptions.add( this );
+        }
+        else
+            detectedOptions.add( this );
+    }
+
+    private void handleOptionArgument( OptionParser parser, OptionSet detectedOptions, ArgumentList arguments ) {
+        if ( parser.posixlyCorrect() ) {
+            detectedOptions.add( this );
+            parser.noMoreOptions();
+        }
+        else
+            addArguments( detectedOptions, arguments.next() );
+    }
+}