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+/* -*- 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.org code.
+ *
+ * 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):
+ *   pschwartau@netscape.com
+ *
+ * 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 ***** */
+
+/*
+ * Date: 22 June 2001
+ *
+ * SUMMARY:  Regression test for Bugzilla bug 87231:
+ * "Regular expression /(A)?(A.*)/ picks 'A' twice"
+ *
+ * See http://bugzilla.mozilla.org/show_bug.cgi?id=87231
+ * Key case:
+ *
+ *            pattern = /^(A)?(A.*)$/;
+ *            string = 'A';
+ *            expectedmatch = Array('A', '', 'A');
+ *
+ *
+ * We expect the 1st subexpression (A)? NOT to consume the single 'A'.
+ * Recall that "?" means "match 0 or 1 times". Here, it should NOT do
+ * greedy matching: it should match 0 times instead of 1. This allows
+ * the 2nd subexpression to make the only match it can: the single 'A'.
+ * Such "altruism" is the only way there can be a successful global match...
+ */
+//-----------------------------------------------------------------------------
+var gTestfile = 'regress-87231.js';
+var i = 0;
+var BUGNUMBER = 87231;
+var cnEmptyString = '';
+var summary = 'Testing regular expression /(A)?(A.*)/';
+var status = '';
+var statusmessages = new Array();
+var pattern = '';
+var patterns = new Array();
+var string = '';
+var strings = new Array();
+var actualmatch = '';
+var actualmatches = new Array();
+var expectedmatch = '';
+var expectedmatches = new Array();
+
+
+pattern = /^(A)?(A.*)$/;
+status = inSection(1);
+string = 'AAA';
+actualmatch = string.match(pattern);
+expectedmatch = Array('AAA', 'A', 'AA');
+addThis();
+
+status = inSection(2);
+string = 'AA';
+actualmatch = string.match(pattern);
+expectedmatch = Array('AA', 'A', 'A');
+addThis();
+
+status = inSection(3);
+string = 'A';
+actualmatch = string.match(pattern);
+expectedmatch = Array('A', undefined, 'A'); // 'altruistic' case: see above
+addThis();
+
+
+pattern = /(A)?(A.*)/;
+var strL = 'zxcasd;fl\\\  ^';
+var strR = 'aaAAaaaf;lrlrzs';
+
+status = inSection(4);
+string =  strL + 'AAA' + strR;
+actualmatch = string.match(pattern);
+expectedmatch = Array('AAA' + strR, 'A', 'AA' + strR);
+addThis();
+
+status = inSection(5);
+string =  strL + 'AA' + strR;
+actualmatch = string.match(pattern);
+expectedmatch = Array('AA' + strR, 'A', 'A' + strR);
+addThis();
+
+status = inSection(6);
+string =  strL + 'A' + strR;
+actualmatch = string.match(pattern);
+expectedmatch = Array('A' + strR, undefined, 'A' + strR); // 'altruistic' case: see above
+addThis();
+
+
+
+//-------------------------------------------------------------------------------------------------
+test();
+//-------------------------------------------------------------------------------------------------
+
+
+
+function addThis()
+{
+  statusmessages[i] = status;
+  patterns[i] = pattern;
+  strings[i] = string;
+  actualmatches[i] = actualmatch;
+  expectedmatches[i] = expectedmatch;
+  i++;
+}
+
+
+function test()
+{
+  enterFunc ('test');
+  printBugNumber(BUGNUMBER);
+  printStatus (summary);
+  testRegExp(statusmessages, patterns, strings, actualmatches, expectedmatches);
+  exitFunc ('test');
+}