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diff --git a/js/src/tests/non262/RegExp/regress-100199.js b/js/src/tests/non262/RegExp/regress-100199.js
new file mode 100644
index 0000000000..c43665a9a7
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+++ b/js/src/tests/non262/RegExp/regress-100199.js
@@ -0,0 +1,271 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/*
+ * Date: 17 September 2001
+ *
+ * SUMMARY: Regression test for Bugzilla bug 100199
+ * See http://bugzilla.mozilla.org/show_bug.cgi?id=100199
+ *
+ * The empty character class [] is a valid RegExp construct: the condition
+ * that a given character belong to a set containing no characters. As such,
+ * it can never be met and is always FALSE. Similarly, [^] is a condition
+ * that matches any given character and is always TRUE.
+ *
+ * Neither one of these conditions should cause syntax errors in a RegExp.
+ */
+//-----------------------------------------------------------------------------
+var i = 0;
+var BUGNUMBER = 100199;
+var summary = '[], [^] are valid RegExp conditions. Should not cause errors -';
+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 = /[]/;
+string = 'abc';
+status = inSection(1);
+actualmatch = string.match(pattern);
+expectedmatch = null;
+addThis();
+
+string = '';
+status = inSection(2);
+actualmatch = string.match(pattern);
+expectedmatch = null;
+addThis();
+
+string = '[';
+status = inSection(3);
+actualmatch = string.match(pattern);
+expectedmatch = null;
+addThis();
+
+string = '/';
+status = inSection(4);
+actualmatch = string.match(pattern);
+expectedmatch = null;
+addThis();
+
+string = '[';
+status = inSection(5);
+actualmatch = string.match(pattern);
+expectedmatch = null;
+addThis();
+
+string = ']';
+status = inSection(6);
+actualmatch = string.match(pattern);
+expectedmatch = null;
+addThis();
+
+string = '[]';
+status = inSection(7);
+actualmatch = string.match(pattern);
+expectedmatch = null;
+addThis();
+
+string = '[ ]';
+status = inSection(8);
+actualmatch = string.match(pattern);
+expectedmatch = null;
+addThis();
+
+string = '][';
+status = inSection(9);
+actualmatch = string.match(pattern);
+expectedmatch = null;
+addThis();
+
+
+pattern = /a[]/;
+string = 'abc';
+status = inSection(10);
+actualmatch = string.match(pattern);
+expectedmatch = null;
+addThis();
+
+string = '';
+status = inSection(11);
+actualmatch = string.match(pattern);
+expectedmatch = null;
+addThis();
+
+string = 'a[';
+status = inSection(12);
+actualmatch = string.match(pattern);
+expectedmatch = null;
+addThis();
+
+string = 'a[]';
+status = inSection(13);
+actualmatch = string.match(pattern);
+expectedmatch = null;
+addThis();
+
+string = '[';
+status = inSection(14);
+actualmatch = string.match(pattern);
+expectedmatch = null;
+addThis();
+
+string = ']';
+status = inSection(15);
+actualmatch = string.match(pattern);
+expectedmatch = null;
+addThis();
+
+string = '[]';
+status = inSection(16);
+actualmatch = string.match(pattern);
+expectedmatch = null;
+addThis();
+
+string = '[ ]';
+status = inSection(17);
+actualmatch = string.match(pattern);
+expectedmatch = null;
+addThis();
+
+string = '][';
+status = inSection(18);
+actualmatch = string.match(pattern);
+expectedmatch = null;
+addThis();
+
+
+pattern = /[^]/;
+string = 'abc';
+status = inSection(19);
+actualmatch = string.match(pattern);
+expectedmatch = Array('a');
+addThis();
+
+string = '';
+status = inSection(20);
+actualmatch = string.match(pattern);
+expectedmatch = null; //there are no characters to test against the condition
+addThis();
+
+string = '\/';
+status = inSection(21);
+actualmatch = string.match(pattern);
+expectedmatch = Array('/');
+addThis();
+
+string = '\[';
+status = inSection(22);
+actualmatch = string.match(pattern);
+expectedmatch = Array('[');
+addThis();
+ 
+string = '[';
+status = inSection(23);
+actualmatch = string.match(pattern);
+expectedmatch = Array('[');
+addThis();
+
+string = ']';
+status = inSection(24);
+actualmatch = string.match(pattern);
+expectedmatch = Array(']');
+addThis();
+
+string = '[]';
+status = inSection(25);
+actualmatch = string.match(pattern);
+expectedmatch = Array('[');
+addThis();
+
+string = '[ ]';
+status = inSection(26);
+actualmatch = string.match(pattern);
+expectedmatch = Array('[');
+addThis();
+
+string = '][';
+status = inSection(27);
+actualmatch = string.match(pattern);
+expectedmatch = Array(']');
+addThis();
+
+
+pattern = /a[^]/;
+string = 'abc';
+status = inSection(28);
+actualmatch = string.match(pattern);
+expectedmatch = Array('ab');
+addThis();
+
+string = '';
+status = inSection(29);
+actualmatch = string.match(pattern);
+expectedmatch = null; //there are no characters to test against the condition
+addThis();
+
+string = 'a[';
+status = inSection(30);
+actualmatch = string.match(pattern);
+expectedmatch = Array('a[');
+addThis();
+
+string = 'a]';
+status = inSection(31);
+actualmatch = string.match(pattern);
+expectedmatch = Array('a]');
+addThis();
+
+string = 'a[]';
+status = inSection(32);
+actualmatch = string.match(pattern);
+expectedmatch = Array('a[');
+addThis();
+
+string = 'a[ ]';
+status = inSection(33);
+actualmatch = string.match(pattern);
+expectedmatch = Array('a[');
+addThis();
+
+string = 'a][';
+status = inSection(34);
+actualmatch = string.match(pattern);
+expectedmatch = Array('a]');
+addThis();
+
+
+
+
+//-----------------------------------------------------------------------------
+test();
+//-----------------------------------------------------------------------------
+
+
+
+function addThis()
+{
+  statusmessages[i] = status;
+  patterns[i] = pattern;
+  strings[i] = string;
+  actualmatches[i] = actualmatch;
+  expectedmatches[i] = expectedmatch;
+  i++;
+}
+
+
+function test()
+{
+  printBugNumber(BUGNUMBER);
+  printStatus (summary);
+  testRegExp(statusmessages, patterns, strings, actualmatches, expectedmatches);
+}