diff -r 000000000000 -r 6474c204b198 js/src/tests/js1_2/regexp/backslash.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/js1_2/regexp/backslash.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,47 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 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/. */
+
+
+/**
+   Filename:     backslash.js
+   Description:  'Tests regular expressions containing \'
+
+   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: \\';
+
+writeHeaderToLog('Executing script: backslash.js');
+writeHeaderToLog( SECTION + " "+ TITLE);
+
+// 'abcde'.match(new RegExp('\e'))
+new TestCase ( SECTION, "'abcde'.match(new RegExp('\e'))",
+	       String(["e"]), String('abcde'.match(new RegExp('\e'))));
+
+// 'ab\\cde'.match(new RegExp('\\\\'))
+new TestCase ( SECTION, "'ab\\cde'.match(new RegExp('\\\\'))",
+	       String(["\\"]), String('ab\\cde'.match(new RegExp('\\\\'))));
+
+// 'ab\\cde'.match(/\\/) (using literal)
+new TestCase ( SECTION, "'ab\\cde'.match(/\\\\/)",
+	       String(["\\"]), String('ab\\cde'.match(/\\/)));
+
+// 'before ^$*+?.()|{}[] after'.match(new RegExp('\^\$\*\+\?\.\(\)\|\{\}\[\]'))
+new TestCase ( SECTION,
+	       "'before ^$*+?.()|{}[] after'.match(new RegExp('\\^\\$\\*\\+\\?\\.\\(\\)\\|\\{\\}\\[\\]'))",
+	       String(["^$*+?.()|{}[]"]),
+	       String('before ^$*+?.()|{}[] after'.match(new RegExp('\\^\\$\\*\\+\\?\\.\\(\\)\\|\\{\\}\\[\\]'))));
+
+// 'before ^$*+?.()|{}[] after'.match(/\^\$\*\+\?\.\(\)\|\{\}\[\]/) (using literal)
+new TestCase ( SECTION,
+	       "'before ^$*+?.()|{}[] after'.match(/\\^\\$\\*\\+\\?\\.\\(\\)\\|\\{\\}\\[\\]/)",
+	       String(["^$*+?.()|{}[]"]),
+	       String('before ^$*+?.()|{}[] after'.match(/\^\$\*\+\?\.\(\)\|\{\}\[\]/)));
+
+test();