From 3a5a09eba2adb6a8c24cf6e603aefe9bfa8d75b9 Mon Sep 17 00:00:00 2001
From: Mathias Bynens <mathias@qiwi.be>
Date: Wed, 29 Jun 2016 09:39:00 +0200
Subject: [PATCH] Ensure U+180E is no longer considered whitespace
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Ref. https://hashseed.blogspot.com/2014/08/in-ecma-262-5.html
Ref. https://github.com/tc39/ecma262/pull/300#issuecomment-181376767
Ref. https://github.com/mathiasbynens/regexpu-core/commit/9b10d2a597d4e56b236cae0f9aa2f21a9c6d1122

Fix and add @anba’s U+180E tests
---
 test/built-ins/JSON/parse/15.12.1.1-0-7.js    |   4 +-
 test/built-ins/Number/S9.3.1_A2.js            | 159 +++++++++---------
 test/built-ins/Number/S9.3.1_A2_U180E.js      |  33 ++++
 test/built-ins/Number/S9.3.1_A3_T1.js         |  16 +-
 test/built-ins/Number/S9.3.1_A3_T1_U180E.js   |  43 +++++
 test/built-ins/Number/S9.3.1_A3_T2.js         |  16 +-
 test/built-ins/Number/S9.3.1_A3_T2_U180E.js   |  47 ++++++
 test/built-ins/RegExp/S15.10.2.12_A1_T1.js    |   6 +-
 test/built-ins/RegExp/S15.10.2.12_A2_T1.js    | 134 +++++++--------
 .../toLocaleLowerCase/Final_Sigma_U180E.js    |  59 +++++++
 .../toLowerCase/Final_Sigma_U180E.js          |  59 +++++++
 .../String/prototype/trim/15.5.4.20-3-2.js    |   2 +-
 .../String/prototype/trim/15.5.4.20-3-3.js    |   6 +-
 .../String/prototype/trim/15.5.4.20-3-4.js    |   6 +-
 .../String/prototype/trim/15.5.4.20-3-5.js    |   6 +-
 .../String/prototype/trim/15.5.4.20-3-6.js    |   6 +-
 .../String/prototype/trim/15.5.4.20-3-7.js    |   6 +-
 test/built-ins/String/prototype/trim/u180e.js |  17 ++
 test/built-ins/parseFloat/S15.1.2.3_A2_T10.js |   6 +-
 .../parseFloat/S15.1.2.3_A2_T10_U180E.js      |  27 +++
 test/built-ins/parseInt/S15.1.2.2_A2_T10.js   |   6 +-
 .../parseInt/S15.1.2.2_A2_T10_U180E.js        |  29 ++++
 .../mongolian-vowel-separator-multi.js        |  25 +++
 .../mongolian-vowel-separator-single-eval.js  |  21 +++
 .../mongolian-vowel-separator-single.js       |  25 +++
 .../mongolian-vowel-separator-eval.js         |  21 +++
 .../mongolian-vowel-separator.js              |  22 +++
 .../regexp/mongolian-vowel-separator-eval.js  |  21 +++
 .../regexp/mongolian-vowel-separator.js       |  22 +++
 .../string/mongolian-vowel-separator-eval.js  |  21 +++
 .../string/mongolian-vowel-separator.js       |  22 +++
 .../mongolian-vowel-separator-eval.js         |  28 +++
 .../white-space/mongolian-vowel-separator.js  |  27 +++
 33 files changed, 754 insertions(+), 194 deletions(-)
 create mode 100644 test/built-ins/Number/S9.3.1_A2_U180E.js
 create mode 100644 test/built-ins/Number/S9.3.1_A3_T1_U180E.js
 create mode 100644 test/built-ins/Number/S9.3.1_A3_T2_U180E.js
 create mode 100644 test/built-ins/String/prototype/toLocaleLowerCase/Final_Sigma_U180E.js
 create mode 100644 test/built-ins/String/prototype/toLowerCase/Final_Sigma_U180E.js
 create mode 100644 test/built-ins/String/prototype/trim/u180e.js
 create mode 100644 test/built-ins/parseFloat/S15.1.2.3_A2_T10_U180E.js
 create mode 100644 test/built-ins/parseInt/S15.1.2.2_A2_T10_U180E.js
 create mode 100644 test/language/comments/mongolian-vowel-separator-multi.js
 create mode 100644 test/language/comments/mongolian-vowel-separator-single-eval.js
 create mode 100644 test/language/comments/mongolian-vowel-separator-single.js
 create mode 100644 test/language/expressions/template-literal/mongolian-vowel-separator-eval.js
 create mode 100644 test/language/expressions/template-literal/mongolian-vowel-separator.js
 create mode 100644 test/language/literals/regexp/mongolian-vowel-separator-eval.js
 create mode 100644 test/language/literals/regexp/mongolian-vowel-separator.js
 create mode 100644 test/language/literals/string/mongolian-vowel-separator-eval.js
 create mode 100644 test/language/literals/string/mongolian-vowel-separator.js
 create mode 100644 test/language/white-space/mongolian-vowel-separator-eval.js
 create mode 100644 test/language/white-space/mongolian-vowel-separator.js

diff --git a/test/built-ins/JSON/parse/15.12.1.1-0-7.js b/test/built-ins/JSON/parse/15.12.1.1-0-7.js
index 25e408786b..0f5e758e68 100644
--- a/test/built-ins/JSON/parse/15.12.1.1-0-7.js
+++ b/test/built-ins/JSON/parse/15.12.1.1-0-7.js
@@ -9,6 +9,6 @@ description: >
 ---*/
 
 assert.throws(SyntaxError, function() {
-    // the following should produce a syntax error 
-    JSON.parse('\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u30001234'); 
+    // the following should produce a syntax error
+    JSON.parse('\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u30001234');
 });
diff --git a/test/built-ins/Number/S9.3.1_A2.js b/test/built-ins/Number/S9.3.1_A2.js
index 4293afb335..e52c47e0e8 100644
--- a/test/built-ins/Number/S9.3.1_A2.js
+++ b/test/built-ins/Number/S9.3.1_A2.js
@@ -10,12 +10,12 @@ description: >
 ---*/
 
 // CHECK#1
-if (Number("\u0009\u000C\u0020\u00A0\u000B\u000A\u000D\u2028\u2029\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000") !== 0) {
-  $ERROR('#1.1: Number("\\u0009\\u000C\\u0020\\u00A0\\u000B\\u000A\\u000D\\u2028\\u2029\\u1680\\u180E\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200A\\u202F\\u205F\\u3000") === 0. Actual: ' + (Number("\u0009\u000C\u0020\u00A0\u000B\u000A\u000D\u2028\u2029\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000")));
+if (Number("\u0009\u000C\u0020\u00A0\u000B\u000A\u000D\u2028\u2029\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000") !== 0) {
+  $ERROR('#1.1: Number("\\u0009\\u000C\\u0020\\u00A0\\u000B\\u000A\\u000D\\u2028\\u2029\\u1680\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200A\\u202F\\u205F\\u3000") === 0. Actual: ' + (Number("\u0009\u000C\u0020\u00A0\u000B\u000A\u000D\u2028\u2029\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000")));
 } else {
-  if (1/Number("\u0009\u000C\u0020\u00A0\u000B\u000A\u000D\u2028\u2029\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000") !== Number.POSITIVE_INFINITY) {
-    $ERROR('#1.2: Number("\\u0009\\u000C\\u0020\\u00A0\\u000B\\u000A\\u000D\\u2028\\u2029\\u1680\\u180E\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200A\\u202F\\u205F\\u3000") === +0. Actual: -0');
-  }	
+  if (1/Number("\u0009\u000C\u0020\u00A0\u000B\u000A\u000D\u2028\u2029\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000") !== Number.POSITIVE_INFINITY) {
+    $ERROR('#1.2: Number("\\u0009\\u000C\\u0020\\u00A0\\u000B\\u000A\\u000D\\u2028\\u2029\\u1680\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200A\\u202F\\u205F\\u3000") === +0. Actual: -0');
+  }
 }
 
 // CHECK#2
@@ -24,7 +24,7 @@ if (Number(" ") !== 0) {
 } else {
   if (1/Number(" ") !== Number.POSITIVE_INFINITY) {
     $ERROR('#2.2: Number(" ") === +0. Actual: -0');
-  }	
+  }
 }
 
 // CHECK#3
@@ -33,7 +33,7 @@ if (Number("\t") !== 0) {
 } else {
   if (1/Number("\t") !== Number.POSITIVE_INFINITY) {
     $ERROR('#3.2: Number("\\t") === +0. Actual: -0');
-  }	
+  }
 }
 
 // CHECK#4
@@ -42,7 +42,7 @@ if (Number("\r") !== 0) {
 } else {
   if (1/Number("\r") !== Number.POSITIVE_INFINITY) {
     $ERROR('#4.2: Number("\\r") === +0. Actual: -0');
-  }	
+  }
 }
 
 // CHECK#5
@@ -51,7 +51,7 @@ if (Number("\n") !== 0) {
 } else {
   if (1/Number("\n") !== Number.POSITIVE_INFINITY) {
     $ERROR('#5.2: Number("\\n") === +0. Actual: -0');
-  }	
+  }
 }
 
 // CHECK#6
@@ -60,7 +60,7 @@ if (Number("\f") !== 0) {
 } else {
   if (1/Number("\f") !== Number.POSITIVE_INFINITY) {
     $ERROR('#6.2: Number("\\f") === +0. Actual: -0');
-  }	
+  }
 }
 
 // CHECK#7
@@ -69,7 +69,7 @@ if (Number("\u0009") !== 0) {
 } else {
   if (1/Number("\u0009") !== Number.POSITIVE_INFINITY) {
     $ERROR('#7.2: Number("\\u0009") === +0. Actual: -0');
-  }	
+  }
 }
 
 // CHECK#8
@@ -78,7 +78,7 @@ if (Number("\u000A") !== 0) {
 } else {
   if (1/Number("\u000A") !== Number.POSITIVE_INFINITY) {
     $ERROR('#8.2: Number("\\u000A") === +0. Actual: -0');
-  }	
+  }
 }
 
 // CHECK#9
@@ -87,7 +87,7 @@ if (Number("\u000B") !== 0) {
 } else {
   if (1/Number("\u000B") !== Number.POSITIVE_INFINITY) {
     $ERROR('#9.1.2: Number("\\u000B") === +0. Actual: -0');
-  }	
+  }
 }
 
 // CHECK#10
@@ -96,7 +96,7 @@ if (Number("\u000C") !== 0) {
 } else {
   if (1/Number("\u000C") !== Number.POSITIVE_INFINITY) {
     $ERROR('#10.2: Number("\\u000C") === +0. Actual: -0');
-  }	
+  }
 }
 
 // CHECK#11
@@ -105,7 +105,7 @@ if (Number("\u000D") !== 0) {
 } else {
   if (1/Number("\u000D") !== Number.POSITIVE_INFINITY) {
     $ERROR('#11.2: Number("\\u000D") === +0. Actual: -0');
-  }	
+  }
 }
 
 // CHECK#12
@@ -114,7 +114,7 @@ if (Number("\u00A0") !== 0) {
 } else {
   if (1/Number("\u00A0") !== Number.POSITIVE_INFINITY) {
     $ERROR('#12.2: Number("\\u00A0") === +0. Actual: -0');
-  }	
+  }
 }
 
 // CHECK#13
@@ -123,7 +123,7 @@ if (Number("\u0020") !== 0) {
 } else {
   if (1/Number("\u0020") !== Number.POSITIVE_INFINITY) {
     $ERROR('#13.2: Number("\\u0020") === +0. Actual: -0');
-  }	
+  }
 }
 
 // CHECK#14
@@ -132,7 +132,7 @@ if (Number("\u2028") !== 0) {
 } else {
   if (1/Number("\u2028") !== Number.POSITIVE_INFINITY) {
     $ERROR('#14.2: Number("\\u2028") === +0. Actual: -0');
-  }	
+  }
 }
 
 // CHECK#15
@@ -141,7 +141,7 @@ if (Number("\u2029") !== 0) {
 } else {
   if (1/Number("\u2029") !== Number.POSITIVE_INFINITY) {
     $ERROR('#15.2: Number("\\u2029") === +0. Actual: -0');
-  }	
+  }
 }
 
 // CHECK#16
@@ -150,140 +150,131 @@ if (Number("\u1680") !== 0) {
 } else {
   if (1/Number("\u1680") !== Number.POSITIVE_INFINITY) {
     $ERROR('#16.2: Number("\\u1680") === +0. Actual: -0');
-  }	
+  }
 }
 
 // CHECK#17
-if (Number("\u180E") !== 0) {
-  $ERROR('#17.1: Number("\\u180E") === 0. Actual: ' + (Number("\u180E")));
-} else {
-  if (1/Number("\u180E") !== Number.POSITIVE_INFINITY) {
-    $ERROR('#17.2: Number("\\u180E") === +0. Actual: -0');
-  }	
-}
-
-// CHECK#18
 if (Number("\u2000") !== 0) {
-  $ERROR('#18.1: Number("\\u2000") === 0. Actual: ' + (Number("\u2000")));
+  $ERROR('#17.1: Number("\\u2000") === 0. Actual: ' + (Number("\u2000")));
 } else {
   if (1/Number("\u2000") !== Number.POSITIVE_INFINITY) {
-    $ERROR('#18.2: Number("\\u2000") === +0. Actual: -0');
-  }	
+    $ERROR('#17.2: Number("\\u2000") === +0. Actual: -0');
+  }
 }
 
-// CHECK#19
+// CHECK#18
 if (Number("\u2001") !== 0) {
-  $ERROR('#19.1: Number("\\u2001") === 0. Actual: ' + (Number("\u2001")));
+  $ERROR('#18.1: Number("\\u2001") === 0. Actual: ' + (Number("\u2001")));
 } else {
   if (1/Number("\u2001") !== Number.POSITIVE_INFINITY) {
-    $ERROR('#19.2: Number("\\u2001") === +0. Actual: -0');
-  }	
+    $ERROR('#18.2: Number("\\u2001") === +0. Actual: -0');
+  }
 }
 
-// CHECK#20
+// CHECK#19
 if (Number("\u2002") !== 0) {
-  $ERROR('#20.1: Number("\\u2002") === 0. Actual: ' + (Number("\u2002")));
+  $ERROR('#19.1: Number("\\u2002") === 0. Actual: ' + (Number("\u2002")));
 } else {
   if (1/Number("\u2002") !== Number.POSITIVE_INFINITY) {
-    $ERROR('#20.2: Number("\\u2002") === +0. Actual: -0');
-  }	
+    $ERROR('#19.2: Number("\\u2002") === +0. Actual: -0');
+  }
 }
 
-// CHECK#21
+// CHECK#20
 if (Number("\u2003") !== 0) {
-  $ERROR('#21.1: Number("\\u2003") === 0. Actual: ' + (Number("\u2003")));
+  $ERROR('#20.1: Number("\\u2003") === 0. Actual: ' + (Number("\u2003")));
 } else {
   if (1/Number("\u2003") !== Number.POSITIVE_INFINITY) {
-    $ERROR('#21.2: Number("\\u2003") === +0. Actual: -0');
-  }	
+    $ERROR('#20.2: Number("\\u2003") === +0. Actual: -0');
+  }
 }
 
-// CHECK#22
+// CHECK#21
 if (Number("\u2004") !== 0) {
-  $ERROR('#22.1: Number("\\u2004") === 0. Actual: ' + (Number("\u2004")));
+  $ERROR('#21.1: Number("\\u2004") === 0. Actual: ' + (Number("\u2004")));
 } else {
   if (1/Number("\u2004") !== Number.POSITIVE_INFINITY) {
-    $ERROR('#22.2: Number("\\u2004") === +0. Actual: -0');
-  }	
+    $ERROR('#21.2: Number("\\u2004") === +0. Actual: -0');
+  }
 }
 
-// CHECK#23
+// CHECK#22
 if (Number("\u2005") !== 0) {
-  $ERROR('#23.1: Number("\\u2005") === 0. Actual: ' + (Number("\u2005")));
+  $ERROR('#22.1: Number("\\u2005") === 0. Actual: ' + (Number("\u2005")));
 } else {
   if (1/Number("\u2005") !== Number.POSITIVE_INFINITY) {
-    $ERROR('#23.2: Number("\\u2005") === +0. Actual: -0');
-  }	
+    $ERROR('#22.2: Number("\\u2005") === +0. Actual: -0');
+  }
 }
 
-// CHECK#24
+// CHECK#23
 if (Number("\u2006") !== 0) {
-  $ERROR('#24.1: Number("\\u2006") === 0. Actual: ' + (Number("\u2006")));
+  $ERROR('#23.1: Number("\\u2006") === 0. Actual: ' + (Number("\u2006")));
 } else {
   if (1/Number("\u2006") !== Number.POSITIVE_INFINITY) {
-    $ERROR('#24.2: Number("\\u2006") === +0. Actual: -0');
-  }	
+    $ERROR('#23.2: Number("\\u2006") === +0. Actual: -0');
+  }
 }
 
-// CHECK#25
+// CHECK#24
 if (Number("\u2007") !== 0) {
-  $ERROR('#25.1: Number("\\u2007") === 0. Actual: ' + (Number("\u2007")));
+  $ERROR('#24.1: Number("\\u2007") === 0. Actual: ' + (Number("\u2007")));
 } else {
   if (1/Number("\u2007") !== Number.POSITIVE_INFINITY) {
-    $ERROR('#25.2: Number("\\u2007") === +0. Actual: -0');
-  }	
+    $ERROR('#24.2: Number("\\u2007") === +0. Actual: -0');
+  }
 }
 
-// CHECK#26
+// CHECK#25
 if (Number("\u2008") !== 0) {
-  $ERROR('#26.1: Number("\\u2008") === 0. Actual: ' + (Number("\u2008")));
+  $ERROR('#25.1: Number("\\u2008") === 0. Actual: ' + (Number("\u2008")));
 } else {
   if (1/Number("\u2008") !== Number.POSITIVE_INFINITY) {
-    $ERROR('#26.2: Number("\\u2008") === +0. Actual: -0');
-  }	
+    $ERROR('#25.2: Number("\\u2008") === +0. Actual: -0');
+  }
 }
 
-// CHECK#27
+// CHECK#26
 if (Number("\u2009") !== 0) {
-  $ERROR('#27.1: Number("\\u2009") === 0. Actual: ' + (Number("\u2009")));
+  $ERROR('#26.1: Number("\\u2009") === 0. Actual: ' + (Number("\u2009")));
 } else {
   if (1/Number("\u2009") !== Number.POSITIVE_INFINITY) {
-    $ERROR('#27.2: Number("\\u2009") === +0. Actual: -0');
-  }	
+    $ERROR('#26.2: Number("\\u2009") === +0. Actual: -0');
+  }
 }
 
-// CHECK#28
+// CHECK#27
 if (Number("\u200A") !== 0) {
-  $ERROR('#28.1: Number("\\u200A") === 0. Actual: ' + (Number("\u200A")));
+  $ERROR('#27.1: Number("\\u200A") === 0. Actual: ' + (Number("\u200A")));
 } else {
   if (1/Number("\u200A") !== Number.POSITIVE_INFINITY) {
-    $ERROR('#28.2: Number("\\u200A") === +0. Actual: -0');
-  }	
+    $ERROR('#27.2: Number("\\u200A") === +0. Actual: -0');
+  }
 }
 
-// CHECK#29
+// CHECK#28
 if (Number("\u202F") !== 0) {
-  $ERROR('#29.1: Number("\\u202F") === 0. Actual: ' + (Number("\u202F")));
+  $ERROR('#28.1: Number("\\u202F") === 0. Actual: ' + (Number("\u202F")));
 } else {
   if (1/Number("\u202F") !== Number.POSITIVE_INFINITY) {
-    $ERROR('#29.2: Number("\\u202F") === +0. Actual: -0');
-  }	
+    $ERROR('#28.2: Number("\\u202F") === +0. Actual: -0');
+  }
 }
 
-// CHECK#30
+// CHECK#29
 if (Number("\u205F") !== 0) {
-  $ERROR('#30.1: Number("\\u205F") === 0. Actual: ' + (Number("\u205F")));
+  $ERROR('#29.1: Number("\\u205F") === 0. Actual: ' + (Number("\u205F")));
 } else {
   if (1/Number("\u205F") !== Number.POSITIVE_INFINITY) {
-    $ERROR('#30.2: Number("\\u205F") === +0. Actual: -0');
-  }	
+    $ERROR('#29.2: Number("\\u205F") === +0. Actual: -0');
+  }
 }
 
-// CHECK#31
+// CHECK#30
 if (Number("\u3000") !== 0) {
-  $ERROR('#31.1: Number("\\u3000") === 0. Actual: ' + (Number("\u3000")));
+  $ERROR('#30.1: Number("\\u3000") === 0. Actual: ' + (Number("\u3000")));
 } else {
   if (1/Number("\u3000") !== Number.POSITIVE_INFINITY) {
-    $ERROR('#31.2: Number("\\u3000") === +0. Actual: -0');
-  }	
+    $ERROR('#30.2: Number("\\u3000") === +0. Actual: -0');
+  }
 }
diff --git a/test/built-ins/Number/S9.3.1_A2_U180E.js b/test/built-ins/Number/S9.3.1_A2_U180E.js
new file mode 100644
index 0000000000..4ccbee6c89
--- /dev/null
+++ b/test/built-ins/Number/S9.3.1_A2_U180E.js
@@ -0,0 +1,33 @@
+// Copyright 2016 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-tonumber-applied-to-the-string-type
+description: >
+  Ensure U+180E is not recognized as whitespace, convert to Number by explicit transformation
+info: >
+  7.1.3.1 ToNumber Applied to the String Type
+
+  If the grammar cannot interpret the String as an expansion of
+  StringNumericLiteral, then the result of ToNumber is NaN.
+
+  StringNumericLiteral :::
+    StrWhiteSpace_opt StrNumericLiteral StrWhiteSpace_opt
+  StrWhiteSpace :::
+    StrWhiteSpaceChar StrWhiteSpace_opt
+  StrWhiteSpaceChar :::
+    WhiteSpace
+    LineTerminator
+  WhiteSpace ::
+    <TAB>
+    <VT>
+    <FF>
+    <SP>
+    <NBSP>
+    <ZWNBSP>
+    <USP>
+  <USP> ::
+    Other category “Zs” code points
+---*/
+
+assert.sameValue(Number('\u180E'), NaN, 'Number("\\u180E") === NaN. Actual: ' + (Number("\u180E")));
diff --git a/test/built-ins/Number/S9.3.1_A3_T1.js b/test/built-ins/Number/S9.3.1_A3_T1.js
index d549a588d8..1d3abbec8c 100644
--- a/test/built-ins/Number/S9.3.1_A3_T1.js
+++ b/test/built-ins/Number/S9.3.1_A3_T1.js
@@ -11,21 +11,21 @@ description: static string
 ---*/
 
 // CHECK#1
-if (Number("\u0009\u000C\u0020\u00A0\u000B\u000A\u000D\u2028\u2029\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000") !== Number("")) {
-  $ERROR('#1: Number("\\u0009\\u000C\\u0020\\u00A0\\u000B\\u000A\\u000D\\u2028\\u2029\\u1680\\u180E\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200A\\u202F\\u205F\\u3000") === Number("")');
+if (Number("\u0009\u000C\u0020\u00A0\u000B\u000A\u000D\u2028\u2029\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000") !== Number("")) {
+  $ERROR('#1: Number("\\u0009\\u000C\\u0020\\u00A0\\u000B\\u000A\\u000D\\u2028\\u2029\\u1680\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200A\\u202F\\u205F\\u3000") === Number("")');
 }
 
 // CHECK#2
-if (Number("\u0009\u000C\u0020\u00A0\u000A\u000D\u2028\u2029\u000B\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u30001234567890\u0009\u000C\u0020\u00A0\u000B\u000A\u000D\u2028\u2029\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000") !== Number("1234567890")) {
-  $ERROR('#2: Number("\\u0009\\u000C\\u0020\\u00A0\\u000A\\u000D\\u2028\\u2029\\u000B\\u1680\\u180E\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200A\\u202F\\u205F\\u30001234567890\\u0009\\u000C\\u0020\\u00A0\\u000B\\u000A\\u000D\\u2028\\u2029\\u1680\\u180E\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200A\\u202F\\u205F\\u3000") === Number("1234567890")');
+if (Number("\u0009\u000C\u0020\u00A0\u000A\u000D\u2028\u2029\u000B\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u30001234567890\u0009\u000C\u0020\u00A0\u000B\u000A\u000D\u2028\u2029\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000") !== Number("1234567890")) {
+  $ERROR('#2: Number("\\u0009\\u000C\\u0020\\u00A0\\u000A\\u000D\\u2028\\u2029\\u000B\\u1680\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200A\\u202F\\u205F\\u30001234567890\\u0009\\u000C\\u0020\\u00A0\\u000B\\u000A\\u000D\\u2028\\u2029\\u1680\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200A\\u202F\\u205F\\u3000") === Number("1234567890")');
 }
 
 // CHECK#3
-if (!(+("\u0009\u000C\u0020\u00A0\u000B\u000A\u000D\u2028\u2029\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000Infinity\u0009\u000C\u0020\u00A0\u000B\u000A\u000D\u2028\u2029\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000") == Number("Infinity"))) {
-  $ERROR('#3: +("\\u0009\\u000C\\u0020\\u00A0\\u000B\\u000A\\u000D\\u2028\\u2029\\u1680\\u180E\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200A\\u202F\\u205F\\u3000Infinity\\u0009\\u000C\\u0020\\u00A0\\u000B\\u000A\\u000D\\u2028\\u2029\\u1680\\u180E\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200A\\u202F\\u205F\\u3000") == Number("Infinity")');
+if (!(+("\u0009\u000C\u0020\u00A0\u000B\u000A\u000D\u2028\u2029\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000Infinity\u0009\u000C\u0020\u00A0\u000B\u000A\u000D\u2028\u2029\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000") == Number("Infinity"))) {
+  $ERROR('#3: +("\\u0009\\u000C\\u0020\\u00A0\\u000B\\u000A\\u000D\\u2028\\u2029\\u1680\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200A\\u202F\\u205F\\u3000Infinity\\u0009\\u000C\\u0020\\u00A0\\u000B\\u000A\\u000D\\u2028\\u2029\\u1680\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200A\\u202F\\u205F\\u3000") == Number("Infinity")');
 }
 
 // CHECK#4
-if (!(Number("\u0009\u000C\u0020\u00A0\u000B\u000A\u000D\u2028\u2029\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000-Infinity\u0009\u000C\u0020\u00A0\u000B\u000A\u000D\u2028\u2029\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000") == Number(-"Infinity"))) {
-  $ERROR('#4: Number("\\u0009\\u000C\\u0020\\u00A0\\u000B\\u000A\\u000D\\u2028\\u2029\\u1680\\u180E\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200A\\u202F\\u205F\\u3000-Infinity\\u0009\\u000C\\u0020\\u00A0\\u000B\\u000A\\u000D\\u2028\\u2029\\u1680\\u180E\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200A\\u202F\\u205F\\u3000") == Number("-Infinity")');
+if (!(Number("\u0009\u000C\u0020\u00A0\u000B\u000A\u000D\u2028\u2029\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000-Infinity\u0009\u000C\u0020\u00A0\u000B\u000A\u000D\u2028\u2029\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000") == Number(-"Infinity"))) {
+  $ERROR('#4: Number("\\u0009\\u000C\\u0020\\u00A0\\u000B\\u000A\\u000D\\u2028\\u2029\\u1680\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200A\\u202F\\u205F\\u3000-Infinity\\u0009\\u000C\\u0020\\u00A0\\u000B\\u000A\\u000D\\u2028\\u2029\\u1680\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200A\\u202F\\u205F\\u3000") == Number("-Infinity")');
 }
diff --git a/test/built-ins/Number/S9.3.1_A3_T1_U180E.js b/test/built-ins/Number/S9.3.1_A3_T1_U180E.js
new file mode 100644
index 0000000000..12d3ed43d5
--- /dev/null
+++ b/test/built-ins/Number/S9.3.1_A3_T1_U180E.js
@@ -0,0 +1,43 @@
+// Copyright 2016 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-tonumber-applied-to-the-string-type
+description: >
+  Ensure U+180E is not recognized as whitespace, test ToNumber with static string
+info: >
+  7.1.3.1 ToNumber Applied to the String Type
+
+  If the grammar cannot interpret the String as an expansion of
+  StringNumericLiteral, then the result of ToNumber is NaN.
+
+  StringNumericLiteral :::
+    StrWhiteSpace_opt StrNumericLiteral StrWhiteSpace_opt
+  StrWhiteSpace :::
+    StrWhiteSpaceChar StrWhiteSpace_opt
+  StrWhiteSpaceChar :::
+    WhiteSpace
+    LineTerminator
+  WhiteSpace ::
+    <TAB>
+    <VT>
+    <FF>
+    <SP>
+    <NBSP>
+    <ZWNBSP>
+    <USP>
+  <USP> ::
+    Other category “Zs” code points
+---*/
+
+// CHECK#1
+assert.sameValue(Number('\u180E'), NaN, 'Number("\\u180E") === NaN');
+
+// CHECK#2
+assert.sameValue(Number('\u180E1234567890\u180E'), NaN, 'Number("\u180E1234567890\u180E") === NaN');
+
+// CHECK#3
+assert.sameValue(Number('\u180EInfinity\u180E'), NaN, 'Number("\u180EInfinity\u180E") === NaN');
+
+// CHECK#4
+assert.sameValue(Number('\u180E-Infinity\u180E'), NaN, 'Number("\u180E-Infinity\u180E") === NaN');
diff --git a/test/built-ins/Number/S9.3.1_A3_T2.js b/test/built-ins/Number/S9.3.1_A3_T2.js
index e398188f8c..bd6853fa7d 100644
--- a/test/built-ins/Number/S9.3.1_A3_T2.js
+++ b/test/built-ins/Number/S9.3.1_A3_T2.js
@@ -15,21 +15,21 @@ function dynaString(s1, s2){
 }
 
 // CHECK#1
-if (Number(dynaString("\u0009\u000C\u0020\u00A0\u000B", "\u000A\u000D\u2028\u2029\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000")) !== Number("")) {
-  $ERROR('#1: Number("\\u0009\\u000C\\u0020\\u00A0\\u000B"+"\\u000A\\u000D\\u2028\\u2029\\u1680\\u180E\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200A\\u202F\\u205F\\u3000") === Number("")');
+if (Number(dynaString("\u0009\u000C\u0020\u00A0\u000B", "\u000A\u000D\u2028\u2029\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000")) !== Number("")) {
+  $ERROR('#1: Number("\\u0009\\u000C\\u0020\\u00A0\\u000B"+"\\u000A\\u000D\\u2028\\u2029\\u1680\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200A\\u202F\\u205F\\u3000") === Number("")');
 }
 
 // CHECK#2
-if (+(dynaString("\u0009\u000C\u0020\u00A0\u000A\u000D\u2028\u2029\u000B12345", "67890\u0009\u000C\u0020\u00A0\u000B\u000A\u000D\u2028\u2029\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000")) !== Number("1234567890")) {
-  $ERROR('#2: +("\\u0009\\u000C\\u0020\\u00A0\\u000A\\u000D\\u2028\\u2029\\u000B12345"+"67890\\u0009\\u000C\\u0020\\u00A0\\u000B\\u000A\\u000D\\u2028\\u2029\\u1680\\u180E\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200A\\u202F\\u205F\\u3000") === Number("1234567890")');
+if (+(dynaString("\u0009\u000C\u0020\u00A0\u000A\u000D\u2028\u2029\u000B12345", "67890\u0009\u000C\u0020\u00A0\u000B\u000A\u000D\u2028\u2029\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000")) !== Number("1234567890")) {
+  $ERROR('#2: +("\\u0009\\u000C\\u0020\\u00A0\\u000A\\u000D\\u2028\\u2029\\u000B12345"+"67890\\u0009\\u000C\\u0020\\u00A0\\u000B\\u000A\\u000D\\u2028\\u2029\\u1680\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200A\\u202F\\u205F\\u3000") === Number("1234567890")');
 }
 
 // CHECK#3
-if (!(Number(dynaString("\u0009\u000C\u0020\u00A0\u000B\u000A\u000D\u2028\u2029Infi", "nity\u0009\u000C\u0020\u00A0\u000B\u000A\u000D\u2028\u2029\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000")) == Number("Infinity"))) {
-  $ERROR('#3: Number("\\u0009\\u000C\\u0020\\u00A0\\u000B\\u000A\\u000D\\u2028\\u2029Infi"+"nity\\u0009\\u000C\\u0020\\u00A0\\u000B\\u000A\\u000D\\u2028\\u2029\\u1680\\u180E\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200A\\u202F\\u205F\\u3000") == Number("Infinity")');
+if (!(Number(dynaString("\u0009\u000C\u0020\u00A0\u000B\u000A\u000D\u2028\u2029Infi", "nity\u0009\u000C\u0020\u00A0\u000B\u000A\u000D\u2028\u2029\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000")) == Number("Infinity"))) {
+  $ERROR('#3: Number("\\u0009\\u000C\\u0020\\u00A0\\u000B\\u000A\\u000D\\u2028\\u2029Infi"+"nity\\u0009\\u000C\\u0020\\u00A0\\u000B\\u000A\\u000D\\u2028\\u2029\\u1680\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200A\\u202F\\u205F\\u3000") == Number("Infinity")');
 }
 
 // CHECK#4
-if (!(Number(dynaString("\u0009\u000C\u0020\u00A0\u000B\u000A\u000D\u2028\u2029-Infi", "nity\u0009\u000C\u0020\u00A0\u000B\u000A\u000D\u2028\u2029\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000")) == Number(-"Infinity"))) {
-  $ERROR('#4: Number("\\u0009\\u000C\\u0020\\u00A0\\u000B\\u000A\\u000D\\u2028\\u2029-Infi"+"nity\\u0009\\u000C\\u0020\\u00A0\\u000B\\u000A\\u000D\\u2028\\u2029\\u1680\\u180E\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200A\\u202F\\u205F\\u3000") == Number("-Infinity")');
+if (!(Number(dynaString("\u0009\u000C\u0020\u00A0\u000B\u000A\u000D\u2028\u2029-Infi", "nity\u0009\u000C\u0020\u00A0\u000B\u000A\u000D\u2028\u2029\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000")) == Number(-"Infinity"))) {
+  $ERROR('#4: Number("\\u0009\\u000C\\u0020\\u00A0\\u000B\\u000A\\u000D\\u2028\\u2029-Infi"+"nity\\u0009\\u000C\\u0020\\u00A0\\u000B\\u000A\\u000D\\u2028\\u2029\\u1680\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200A\\u202F\\u205F\\u3000") == Number("-Infinity")');
 }
diff --git a/test/built-ins/Number/S9.3.1_A3_T2_U180E.js b/test/built-ins/Number/S9.3.1_A3_T2_U180E.js
new file mode 100644
index 0000000000..19cc137d90
--- /dev/null
+++ b/test/built-ins/Number/S9.3.1_A3_T2_U180E.js
@@ -0,0 +1,47 @@
+// Copyright 2016 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-tonumber-applied-to-the-string-type
+description: >
+  Ensure U+180E is not recognized as whitespace, test ToNumber with dynamic string
+info: >
+  7.1.3.1 ToNumber Applied to the String Type
+
+  If the grammar cannot interpret the String as an expansion of
+  StringNumericLiteral, then the result of ToNumber is NaN.
+
+  StringNumericLiteral :::
+    StrWhiteSpace_opt StrNumericLiteral StrWhiteSpace_opt
+  StrWhiteSpace :::
+    StrWhiteSpaceChar StrWhiteSpace_opt
+  StrWhiteSpaceChar :::
+    WhiteSpace
+    LineTerminator
+  WhiteSpace ::
+    <TAB>
+    <VT>
+    <FF>
+    <SP>
+    <NBSP>
+    <ZWNBSP>
+    <USP>
+  <USP> ::
+    Other category “Zs” code points
+---*/
+
+function dynaString(s1, s2){
+  return String(s1) + String(s2);
+}
+
+// CHECK#1
+assert.sameValue(Number(dynaString("", "\u180E")), NaN, 'Number(dynaString("", "\u180E")) === NaN');
+
+// CHECK#2
+assert.sameValue(+(dynaString("12345", "67890\u180E")), NaN, '+(dynaString("12345", "67890\u180E")) === NaN');
+
+// CHECK#3
+assert.sameValue(Number(dynaString("Infi", "nity\u180E")), NaN, 'Number(dynaString("Infi", "nity\u180E")) === NaN');
+
+// CHECK#4
+assert.sameValue(Number(dynaString("-Infi", "nity\u180E")), NaN, 'Number(dynaString("-Infi", "nity\u180E")) === NaN');
diff --git a/test/built-ins/RegExp/S15.10.2.12_A1_T1.js b/test/built-ins/RegExp/S15.10.2.12_A1_T1.js
index 30eb0fe341..e5e641d2dc 100644
--- a/test/built-ins/RegExp/S15.10.2.12_A1_T1.js
+++ b/test/built-ins/RegExp/S15.10.2.12_A1_T1.js
@@ -60,7 +60,7 @@ if (i5.replace(/\s+/g, "") !== o5) {
 var i6 = "";
 for (var j = 6144; j < 7168; j++)
   i6 += String.fromCharCode(j);
-var o6 = "\u1800\u1801\u1802\u1803\u1804\u1805\u1806\u1807\u1808\u1809\u180A\u180B\u180C\u180D\u180F\u1810\u1811\u1812\u1813\u1814\u1815\u1816\u1817\u1818\u1819\u181A\u181B\u181C\u181D\u181E\u181F\u1820\u1821\u1822\u1823\u1824\u1825\u1826\u1827\u1828\u1829\u182A\u182B\u182C\u182D\u182E\u182F\u1830\u1831\u1832\u1833\u1834\u1835\u1836\u1837\u1838\u1839\u183A\u183B\u183C\u183D\u183E\u183F\u1840\u1841\u1842\u1843\u1844\u1845\u1846\u1847\u1848\u1849\u184A\u184B\u184C\u184D\u184E\u184F\u1850\u1851\u1852\u1853\u1854\u1855\u1856\u1857\u1858\u1859\u185A\u185B\u185C\u185D\u185E\u185F\u1860\u1861\u1862\u1863\u1864\u1865\u1866\u1867\u1868\u1869\u186A\u186B\u186C\u186D\u186E\u186F\u1870\u1871\u1872\u1873\u1874\u1875\u1876\u1877\u1878\u1879\u187A\u187B\u187C\u187D\u187E\u187F\u1880\u1881\u1882\u1883\u1884\u1885\u1886\u1887\u1888\u1889\u188A\u188B\u188C\u188D\u188E\u188F\u1890\u1891\u1892\u1893\u1894\u1895\u1896\u1897\u1898\u1899\u189A\u189B\u189C\u189D\u189E\u189F\u18A0\u18A1\u18A2\u18A3\u18A4\u18A5\u18A6\u18A7\u18A8\u18A9\u18AA\u18AB\u18AC\u18AD\u18AE\u18AF\u18B0\u18B1\u18B2\u18B3\u18B4\u18B5\u18B6\u18B7\u18B8\u18B9\u18BA\u18BB\u18BC\u18BD\u18BE\u18BF\u18C0\u18C1\u18C2\u18C3\u18C4\u18C5\u18C6\u18C7\u18C8\u18C9\u18CA\u18CB\u18CC\u18CD\u18CE\u18CF\u18D0\u18D1\u18D2\u18D3\u18D4\u18D5\u18D6\u18D7\u18D8\u18D9\u18DA\u18DB\u18DC\u18DD\u18DE\u18DF\u18E0\u18E1\u18E2\u18E3\u18E4\u18E5\u18E6\u18E7\u18E8\u18E9\u18EA\u18EB\u18EC\u18ED\u18EE\u18EF\u18F0\u18F1\u18F2\u18F3\u18F4\u18F5\u18F6\u18F7\u18F8\u18F9\u18FA\u18FB\u18FC\u18FD\u18FE\u18FF\u1900\u1901\u1902\u1903\u1904\u1905\u1906\u1907\u1908\u1909\u190A\u190B\u190C\u190D\u190E\u190F\u1910\u1911\u1912\u1913\u1914\u1915\u1916\u1917\u1918\u1919\u191A\u191B\u191C\u191D\u191E\u191F\u1920\u1921\u1922\u1923\u1924\u1925\u1926\u1927\u1928\u1929\u192A\u192B\u192C\u192D\u192E\u192F\u1930\u1931\u1932\u1933\u1934\u1935\u1936\u1937\u1938\u1939\u193A\u193B\u193C\u193D\u193E\u193F\u1940\u1941\u1942\u1943\u1944\u1945\u1946\u1947\u1948\u1949\u194A\u194B\u194C\u194D\u194E\u194F\u1950\u1951\u1952\u1953\u1954\u1955\u1956\u1957\u1958\u1959\u195A\u195B\u195C\u195D\u195E\u195F\u1960\u1961\u1962\u1963\u1964\u1965\u1966\u1967\u1968\u1969\u196A\u196B\u196C\u196D\u196E\u196F\u1970\u1971\u1972\u1973\u1974\u1975\u1976\u1977\u1978\u1979\u197A\u197B\u197C\u197D\u197E\u197F\u1980\u1981\u1982\u1983\u1984\u1985\u1986\u1987\u1988\u1989\u198A\u198B\u198C\u198D\u198E\u198F\u1990\u1991\u1992\u1993\u1994\u1995\u1996\u1997\u1998\u1999\u199A\u199B\u199C\u199D\u199E\u199F\u19A0\u19A1\u19A2\u19A3\u19A4\u19A5\u19A6\u19A7\u19A8\u19A9\u19AA\u19AB\u19AC\u19AD\u19AE\u19AF\u19B0\u19B1\u19B2\u19B3\u19B4\u19B5\u19B6\u19B7\u19B8\u19B9\u19BA\u19BB\u19BC\u19BD\u19BE\u19BF\u19C0\u19C1\u19C2\u19C3\u19C4\u19C5\u19C6\u19C7\u19C8\u19C9\u19CA\u19CB\u19CC\u19CD\u19CE\u19CF\u19D0\u19D1\u19D2\u19D3\u19D4\u19D5\u19D6\u19D7\u19D8\u19D9\u19DA\u19DB\u19DC\u19DD\u19DE\u19DF\u19E0\u19E1\u19E2\u19E3\u19E4\u19E5\u19E6\u19E7\u19E8\u19E9\u19EA\u19EB\u19EC\u19ED\u19EE\u19EF\u19F0\u19F1\u19F2\u19F3\u19F4\u19F5\u19F6\u19F7\u19F8\u19F9\u19FA\u19FB\u19FC\u19FD\u19FE\u19FF\u1A00\u1A01\u1A02\u1A03\u1A04\u1A05\u1A06\u1A07\u1A08\u1A09\u1A0A\u1A0B\u1A0C\u1A0D\u1A0E\u1A0F\u1A10\u1A11\u1A12\u1A13\u1A14\u1A15\u1A16\u1A17\u1A18\u1A19\u1A1A\u1A1B\u1A1C\u1A1D\u1A1E\u1A1F\u1A20\u1A21\u1A22\u1A23\u1A24\u1A25\u1A26\u1A27\u1A28\u1A29\u1A2A\u1A2B\u1A2C\u1A2D\u1A2E\u1A2F\u1A30\u1A31\u1A32\u1A33\u1A34\u1A35\u1A36\u1A37\u1A38\u1A39\u1A3A\u1A3B\u1A3C\u1A3D\u1A3E\u1A3F\u1A40\u1A41\u1A42\u1A43\u1A44\u1A45\u1A46\u1A47\u1A48\u1A49\u1A4A\u1A4B\u1A4C\u1A4D\u1A4E\u1A4F\u1A50\u1A51\u1A52\u1A53\u1A54\u1A55\u1A56\u1A57\u1A58\u1A59\u1A5A\u1A5B\u1A5C\u1A5D\u1A5E\u1A5F\u1A60\u1A61\u1A62\u1A63\u1A64\u1A65\u1A66\u1A67\u1A68\u1A69\u1A6A\u1A6B\u1A6C\u1A6D\u1A6E\u1A6F\u1A70\u1A71\u1A72\u1A73\u1A74\u1A75\u1A76\u1A77\u1A78\u1A79\u1A7A\u1A7B\u1A7C\u1A7D\u1A7E\u1A7F\u1A80\u1A81\u1A82\u1A83\u1A84\u1A85\u1A86\u1A87\u1A88\u1A89\u1A8A\u1A8B\u1A8C\u1A8D\u1A8E\u1A8F\u1A90\u1A91\u1A92\u1A93\u1A94\u1A95\u1A96\u1A97\u1A98\u1A99\u1A9A\u1A9B\u1A9C\u1A9D\u1A9E\u1A9F\u1AA0\u1AA1\u1AA2\u1AA3\u1AA4\u1AA5\u1AA6\u1AA7\u1AA8\u1AA9\u1AAA\u1AAB\u1AAC\u1AAD\u1AAE\u1AAF\u1AB0\u1AB1\u1AB2\u1AB3\u1AB4\u1AB5\u1AB6\u1AB7\u1AB8\u1AB9\u1ABA\u1ABB\u1ABC\u1ABD\u1ABE\u1ABF\u1AC0\u1AC1\u1AC2\u1AC3\u1AC4\u1AC5\u1AC6\u1AC7\u1AC8\u1AC9\u1ACA\u1ACB\u1ACC\u1ACD\u1ACE\u1ACF\u1AD0\u1AD1\u1AD2\u1AD3\u1AD4\u1AD5\u1AD6\u1AD7\u1AD8\u1AD9\u1ADA\u1ADB\u1ADC\u1ADD\u1ADE\u1ADF\u1AE0\u1AE1\u1AE2\u1AE3\u1AE4\u1AE5\u1AE6\u1AE7\u1AE8\u1AE9\u1AEA\u1AEB\u1AEC\u1AED\u1AEE\u1AEF\u1AF0\u1AF1\u1AF2\u1AF3\u1AF4\u1AF5\u1AF6\u1AF7\u1AF8\u1AF9\u1AFA\u1AFB\u1AFC\u1AFD\u1AFE\u1AFF\u1B00\u1B01\u1B02\u1B03\u1B04\u1B05\u1B06\u1B07\u1B08\u1B09\u1B0A\u1B0B\u1B0C\u1B0D\u1B0E\u1B0F\u1B10\u1B11\u1B12\u1B13\u1B14\u1B15\u1B16\u1B17\u1B18\u1B19\u1B1A\u1B1B\u1B1C\u1B1D\u1B1E\u1B1F\u1B20\u1B21\u1B22\u1B23\u1B24\u1B25\u1B26\u1B27\u1B28\u1B29\u1B2A\u1B2B\u1B2C\u1B2D\u1B2E\u1B2F\u1B30\u1B31\u1B32\u1B33\u1B34\u1B35\u1B36\u1B37\u1B38\u1B39\u1B3A\u1B3B\u1B3C\u1B3D\u1B3E\u1B3F\u1B40\u1B41\u1B42\u1B43\u1B44\u1B45\u1B46\u1B47\u1B48\u1B49\u1B4A\u1B4B\u1B4C\u1B4D\u1B4E\u1B4F\u1B50\u1B51\u1B52\u1B53\u1B54\u1B55\u1B56\u1B57\u1B58\u1B59\u1B5A\u1B5B\u1B5C\u1B5D\u1B5E\u1B5F\u1B60\u1B61\u1B62\u1B63\u1B64\u1B65\u1B66\u1B67\u1B68\u1B69\u1B6A\u1B6B\u1B6C\u1B6D\u1B6E\u1B6F\u1B70\u1B71\u1B72\u1B73\u1B74\u1B75\u1B76\u1B77\u1B78\u1B79\u1B7A\u1B7B\u1B7C\u1B7D\u1B7E\u1B7F\u1B80\u1B81\u1B82\u1B83\u1B84\u1B85\u1B86\u1B87\u1B88\u1B89\u1B8A\u1B8B\u1B8C\u1B8D\u1B8E\u1B8F\u1B90\u1B91\u1B92\u1B93\u1B94\u1B95\u1B96\u1B97\u1B98\u1B99\u1B9A\u1B9B\u1B9C\u1B9D\u1B9E\u1B9F\u1BA0\u1BA1\u1BA2\u1BA3\u1BA4\u1BA5\u1BA6\u1BA7\u1BA8\u1BA9\u1BAA\u1BAB\u1BAC\u1BAD\u1BAE\u1BAF\u1BB0\u1BB1\u1BB2\u1BB3\u1BB4\u1BB5\u1BB6\u1BB7\u1BB8\u1BB9\u1BBA\u1BBB\u1BBC\u1BBD\u1BBE\u1BBF\u1BC0\u1BC1\u1BC2\u1BC3\u1BC4\u1BC5\u1BC6\u1BC7\u1BC8\u1BC9\u1BCA\u1BCB\u1BCC\u1BCD\u1BCE\u1BCF\u1BD0\u1BD1\u1BD2\u1BD3\u1BD4\u1BD5\u1BD6\u1BD7\u1BD8\u1BD9\u1BDA\u1BDB\u1BDC\u1BDD\u1BDE\u1BDF\u1BE0\u1BE1\u1BE2\u1BE3\u1BE4\u1BE5\u1BE6\u1BE7\u1BE8\u1BE9\u1BEA\u1BEB\u1BEC\u1BED\u1BEE\u1BEF\u1BF0\u1BF1\u1BF2\u1BF3\u1BF4\u1BF5\u1BF6\u1BF7\u1BF8\u1BF9\u1BFA\u1BFB\u1BFC\u1BFD\u1BFE\u1BFF";
+var o6 = "\u1800\u1801\u1802\u1803\u1804\u1805\u1806\u1807\u1808\u1809\u180A\u180B\u180C\u180D\u180E\u180F\u1810\u1811\u1812\u1813\u1814\u1815\u1816\u1817\u1818\u1819\u181A\u181B\u181C\u181D\u181E\u181F\u1820\u1821\u1822\u1823\u1824\u1825\u1826\u1827\u1828\u1829\u182A\u182B\u182C\u182D\u182E\u182F\u1830\u1831\u1832\u1833\u1834\u1835\u1836\u1837\u1838\u1839\u183A\u183B\u183C\u183D\u183E\u183F\u1840\u1841\u1842\u1843\u1844\u1845\u1846\u1847\u1848\u1849\u184A\u184B\u184C\u184D\u184E\u184F\u1850\u1851\u1852\u1853\u1854\u1855\u1856\u1857\u1858\u1859\u185A\u185B\u185C\u185D\u185E\u185F\u1860\u1861\u1862\u1863\u1864\u1865\u1866\u1867\u1868\u1869\u186A\u186B\u186C\u186D\u186E\u186F\u1870\u1871\u1872\u1873\u1874\u1875\u1876\u1877\u1878\u1879\u187A\u187B\u187C\u187D\u187E\u187F\u1880\u1881\u1882\u1883\u1884\u1885\u1886\u1887\u1888\u1889\u188A\u188B\u188C\u188D\u188E\u188F\u1890\u1891\u1892\u1893\u1894\u1895\u1896\u1897\u1898\u1899\u189A\u189B\u189C\u189D\u189E\u189F\u18A0\u18A1\u18A2\u18A3\u18A4\u18A5\u18A6\u18A7\u18A8\u18A9\u18AA\u18AB\u18AC\u18AD\u18AE\u18AF\u18B0\u18B1\u18B2\u18B3\u18B4\u18B5\u18B6\u18B7\u18B8\u18B9\u18BA\u18BB\u18BC\u18BD\u18BE\u18BF\u18C0\u18C1\u18C2\u18C3\u18C4\u18C5\u18C6\u18C7\u18C8\u18C9\u18CA\u18CB\u18CC\u18CD\u18CE\u18CF\u18D0\u18D1\u18D2\u18D3\u18D4\u18D5\u18D6\u18D7\u18D8\u18D9\u18DA\u18DB\u18DC\u18DD\u18DE\u18DF\u18E0\u18E1\u18E2\u18E3\u18E4\u18E5\u18E6\u18E7\u18E8\u18E9\u18EA\u18EB\u18EC\u18ED\u18EE\u18EF\u18F0\u18F1\u18F2\u18F3\u18F4\u18F5\u18F6\u18F7\u18F8\u18F9\u18FA\u18FB\u18FC\u18FD\u18FE\u18FF\u1900\u1901\u1902\u1903\u1904\u1905\u1906\u1907\u1908\u1909\u190A\u190B\u190C\u190D\u190E\u190F\u1910\u1911\u1912\u1913\u1914\u1915\u1916\u1917\u1918\u1919\u191A\u191B\u191C\u191D\u191E\u191F\u1920\u1921\u1922\u1923\u1924\u1925\u1926\u1927\u1928\u1929\u192A\u192B\u192C\u192D\u192E\u192F\u1930\u1931\u1932\u1933\u1934\u1935\u1936\u1937\u1938\u1939\u193A\u193B\u193C\u193D\u193E\u193F\u1940\u1941\u1942\u1943\u1944\u1945\u1946\u1947\u1948\u1949\u194A\u194B\u194C\u194D\u194E\u194F\u1950\u1951\u1952\u1953\u1954\u1955\u1956\u1957\u1958\u1959\u195A\u195B\u195C\u195D\u195E\u195F\u1960\u1961\u1962\u1963\u1964\u1965\u1966\u1967\u1968\u1969\u196A\u196B\u196C\u196D\u196E\u196F\u1970\u1971\u1972\u1973\u1974\u1975\u1976\u1977\u1978\u1979\u197A\u197B\u197C\u197D\u197E\u197F\u1980\u1981\u1982\u1983\u1984\u1985\u1986\u1987\u1988\u1989\u198A\u198B\u198C\u198D\u198E\u198F\u1990\u1991\u1992\u1993\u1994\u1995\u1996\u1997\u1998\u1999\u199A\u199B\u199C\u199D\u199E\u199F\u19A0\u19A1\u19A2\u19A3\u19A4\u19A5\u19A6\u19A7\u19A8\u19A9\u19AA\u19AB\u19AC\u19AD\u19AE\u19AF\u19B0\u19B1\u19B2\u19B3\u19B4\u19B5\u19B6\u19B7\u19B8\u19B9\u19BA\u19BB\u19BC\u19BD\u19BE\u19BF\u19C0\u19C1\u19C2\u19C3\u19C4\u19C5\u19C6\u19C7\u19C8\u19C9\u19CA\u19CB\u19CC\u19CD\u19CE\u19CF\u19D0\u19D1\u19D2\u19D3\u19D4\u19D5\u19D6\u19D7\u19D8\u19D9\u19DA\u19DB\u19DC\u19DD\u19DE\u19DF\u19E0\u19E1\u19E2\u19E3\u19E4\u19E5\u19E6\u19E7\u19E8\u19E9\u19EA\u19EB\u19EC\u19ED\u19EE\u19EF\u19F0\u19F1\u19F2\u19F3\u19F4\u19F5\u19F6\u19F7\u19F8\u19F9\u19FA\u19FB\u19FC\u19FD\u19FE\u19FF\u1A00\u1A01\u1A02\u1A03\u1A04\u1A05\u1A06\u1A07\u1A08\u1A09\u1A0A\u1A0B\u1A0C\u1A0D\u1A0E\u1A0F\u1A10\u1A11\u1A12\u1A13\u1A14\u1A15\u1A16\u1A17\u1A18\u1A19\u1A1A\u1A1B\u1A1C\u1A1D\u1A1E\u1A1F\u1A20\u1A21\u1A22\u1A23\u1A24\u1A25\u1A26\u1A27\u1A28\u1A29\u1A2A\u1A2B\u1A2C\u1A2D\u1A2E\u1A2F\u1A30\u1A31\u1A32\u1A33\u1A34\u1A35\u1A36\u1A37\u1A38\u1A39\u1A3A\u1A3B\u1A3C\u1A3D\u1A3E\u1A3F\u1A40\u1A41\u1A42\u1A43\u1A44\u1A45\u1A46\u1A47\u1A48\u1A49\u1A4A\u1A4B\u1A4C\u1A4D\u1A4E\u1A4F\u1A50\u1A51\u1A52\u1A53\u1A54\u1A55\u1A56\u1A57\u1A58\u1A59\u1A5A\u1A5B\u1A5C\u1A5D\u1A5E\u1A5F\u1A60\u1A61\u1A62\u1A63\u1A64\u1A65\u1A66\u1A67\u1A68\u1A69\u1A6A\u1A6B\u1A6C\u1A6D\u1A6E\u1A6F\u1A70\u1A71\u1A72\u1A73\u1A74\u1A75\u1A76\u1A77\u1A78\u1A79\u1A7A\u1A7B\u1A7C\u1A7D\u1A7E\u1A7F\u1A80\u1A81\u1A82\u1A83\u1A84\u1A85\u1A86\u1A87\u1A88\u1A89\u1A8A\u1A8B\u1A8C\u1A8D\u1A8E\u1A8F\u1A90\u1A91\u1A92\u1A93\u1A94\u1A95\u1A96\u1A97\u1A98\u1A99\u1A9A\u1A9B\u1A9C\u1A9D\u1A9E\u1A9F\u1AA0\u1AA1\u1AA2\u1AA3\u1AA4\u1AA5\u1AA6\u1AA7\u1AA8\u1AA9\u1AAA\u1AAB\u1AAC\u1AAD\u1AAE\u1AAF\u1AB0\u1AB1\u1AB2\u1AB3\u1AB4\u1AB5\u1AB6\u1AB7\u1AB8\u1AB9\u1ABA\u1ABB\u1ABC\u1ABD\u1ABE\u1ABF\u1AC0\u1AC1\u1AC2\u1AC3\u1AC4\u1AC5\u1AC6\u1AC7\u1AC8\u1AC9\u1ACA\u1ACB\u1ACC\u1ACD\u1ACE\u1ACF\u1AD0\u1AD1\u1AD2\u1AD3\u1AD4\u1AD5\u1AD6\u1AD7\u1AD8\u1AD9\u1ADA\u1ADB\u1ADC\u1ADD\u1ADE\u1ADF\u1AE0\u1AE1\u1AE2\u1AE3\u1AE4\u1AE5\u1AE6\u1AE7\u1AE8\u1AE9\u1AEA\u1AEB\u1AEC\u1AED\u1AEE\u1AEF\u1AF0\u1AF1\u1AF2\u1AF3\u1AF4\u1AF5\u1AF6\u1AF7\u1AF8\u1AF9\u1AFA\u1AFB\u1AFC\u1AFD\u1AFE\u1AFF\u1B00\u1B01\u1B02\u1B03\u1B04\u1B05\u1B06\u1B07\u1B08\u1B09\u1B0A\u1B0B\u1B0C\u1B0D\u1B0E\u1B0F\u1B10\u1B11\u1B12\u1B13\u1B14\u1B15\u1B16\u1B17\u1B18\u1B19\u1B1A\u1B1B\u1B1C\u1B1D\u1B1E\u1B1F\u1B20\u1B21\u1B22\u1B23\u1B24\u1B25\u1B26\u1B27\u1B28\u1B29\u1B2A\u1B2B\u1B2C\u1B2D\u1B2E\u1B2F\u1B30\u1B31\u1B32\u1B33\u1B34\u1B35\u1B36\u1B37\u1B38\u1B39\u1B3A\u1B3B\u1B3C\u1B3D\u1B3E\u1B3F\u1B40\u1B41\u1B42\u1B43\u1B44\u1B45\u1B46\u1B47\u1B48\u1B49\u1B4A\u1B4B\u1B4C\u1B4D\u1B4E\u1B4F\u1B50\u1B51\u1B52\u1B53\u1B54\u1B55\u1B56\u1B57\u1B58\u1B59\u1B5A\u1B5B\u1B5C\u1B5D\u1B5E\u1B5F\u1B60\u1B61\u1B62\u1B63\u1B64\u1B65\u1B66\u1B67\u1B68\u1B69\u1B6A\u1B6B\u1B6C\u1B6D\u1B6E\u1B6F\u1B70\u1B71\u1B72\u1B73\u1B74\u1B75\u1B76\u1B77\u1B78\u1B79\u1B7A\u1B7B\u1B7C\u1B7D\u1B7E\u1B7F\u1B80\u1B81\u1B82\u1B83\u1B84\u1B85\u1B86\u1B87\u1B88\u1B89\u1B8A\u1B8B\u1B8C\u1B8D\u1B8E\u1B8F\u1B90\u1B91\u1B92\u1B93\u1B94\u1B95\u1B96\u1B97\u1B98\u1B99\u1B9A\u1B9B\u1B9C\u1B9D\u1B9E\u1B9F\u1BA0\u1BA1\u1BA2\u1BA3\u1BA4\u1BA5\u1BA6\u1BA7\u1BA8\u1BA9\u1BAA\u1BAB\u1BAC\u1BAD\u1BAE\u1BAF\u1BB0\u1BB1\u1BB2\u1BB3\u1BB4\u1BB5\u1BB6\u1BB7\u1BB8\u1BB9\u1BBA\u1BBB\u1BBC\u1BBD\u1BBE\u1BBF\u1BC0\u1BC1\u1BC2\u1BC3\u1BC4\u1BC5\u1BC6\u1BC7\u1BC8\u1BC9\u1BCA\u1BCB\u1BCC\u1BCD\u1BCE\u1BCF\u1BD0\u1BD1\u1BD2\u1BD3\u1BD4\u1BD5\u1BD6\u1BD7\u1BD8\u1BD9\u1BDA\u1BDB\u1BDC\u1BDD\u1BDE\u1BDF\u1BE0\u1BE1\u1BE2\u1BE3\u1BE4\u1BE5\u1BE6\u1BE7\u1BE8\u1BE9\u1BEA\u1BEB\u1BEC\u1BED\u1BEE\u1BEF\u1BF0\u1BF1\u1BF2\u1BF3\u1BF4\u1BF5\u1BF6\u1BF7\u1BF8\u1BF9\u1BFA\u1BFB\u1BFC\u1BFD\u1BFE\u1BFF";
 if (i6.replace(/\s+/g, "") !== o6) {
   $ERROR("#6: Error matching character class \s between character 1800 and 1bff");
 }
@@ -515,7 +515,7 @@ if (i62.replace(/\s+/g, "") !== o62) {
 
 var i63 = "";
 for (var j = 64512; j < 65536; j++) {
-  if (j===65279) { continue;} //Ignore BOM
+  if (j === 0xFEFF) { continue; } //Ignore BOM
   i63 += String.fromCharCode(j);
 }
 var o63 = i63;
@@ -523,7 +523,7 @@ if (i63.replace(/\s+/g, "") !== o63) {
   $ERROR("#63: Error matching character class \s between character fc00 and ffff");
 }
 
-var i64 = String.fromCharCode(65279);
+var i64 = String.fromCharCode(0xFEFF);
 if (i64.replace(/\s/g, "") !== "") {
   $ERROR("#64: Error matching character class \s for BOM (feff)");
 }
diff --git a/test/built-ins/RegExp/S15.10.2.12_A2_T1.js b/test/built-ins/RegExp/S15.10.2.12_A2_T1.js
index 2381ef6d27..a5d4f5244d 100644
--- a/test/built-ins/RegExp/S15.10.2.12_A2_T1.js
+++ b/test/built-ins/RegExp/S15.10.2.12_A2_T1.js
@@ -11,7 +11,7 @@ description: WhiteSpace
 ---*/
 
 var i0 = "";
-for (var j = 0; j < 1024; j++)
+for (var j = 0x0000; j < 0x0400; j++)
   i0 += String.fromCharCode(j);
 var o0 = "\u0009\u000A\u000B\u000C\u000D\u0020\u00A0";
 if (i0.replace(/\S+/g, "") !== o0) {
@@ -19,7 +19,7 @@ if (i0.replace(/\S+/g, "") !== o0) {
 }
 
 var i1 = "";
-for (var j = 1024; j < 2048; j++)
+for (var j = 0x0400; j < 0x0800; j++)
   i1 += String.fromCharCode(j);
 var o1 = "";
 if (i1.replace(/\S+/g, "") !== o1) {
@@ -27,7 +27,7 @@ if (i1.replace(/\S+/g, "") !== o1) {
 }
 
 var i2 = "";
-for (var j = 2048; j < 3072; j++)
+for (var j = 0x0800; j < 0x0C00; j++)
   i2 += String.fromCharCode(j);
 var o2 = "";
 if (i2.replace(/\S+/g, "") !== o2) {
@@ -35,7 +35,7 @@ if (i2.replace(/\S+/g, "") !== o2) {
 }
 
 var i3 = "";
-for (var j = 3072; j < 4096; j++)
+for (var j = 0x0C00; j < 0x1000; j++)
   i3 += String.fromCharCode(j);
 var o3 = "";
 if (i3.replace(/\S+/g, "") !== o3) {
@@ -43,7 +43,7 @@ if (i3.replace(/\S+/g, "") !== o3) {
 }
 
 var i4 = "";
-for (var j = 4096; j < 5120; j++)
+for (var j = 0x1000; j < 0x1400; j++)
   i4 += String.fromCharCode(j);
 var o4 = "";
 if (i4.replace(/\S+/g, "") !== o4) {
@@ -51,7 +51,7 @@ if (i4.replace(/\S+/g, "") !== o4) {
 }
 
 var i5 = "";
-for (var j = 5120; j < 6144; j++)
+for (var j = 0x1400; j < 0x1800; j++)
   i5 += String.fromCharCode(j);
 var o5 = "\u1680";
 if (i5.replace(/\S+/g, "") !== o5) {
@@ -59,15 +59,15 @@ if (i5.replace(/\S+/g, "") !== o5) {
 }
 
 var i6 = "";
-for (var j = 6144; j < 7168; j++)
+for (var j = 0x1800; j < 0x1C00; j++)
   i6 += String.fromCharCode(j);
-var o6 = "\u180E";
+var o6 = "";
 if (i6.replace(/\S+/g, "") !== o6) {
   $ERROR("#6: Error matching character class \S between character 1800 and 1bff");
 }
 
 var i7 = "";
-for (var j = 7168; j < 8192; j++)
+for (var j = 0x1C00; j < 0x2000; j++)
   i7 += String.fromCharCode(j);
 var o7 = "";
 if (i7.replace(/\S+/g, "") !== o7) {
@@ -75,7 +75,7 @@ if (i7.replace(/\S+/g, "") !== o7) {
 }
 
 var i8 = "";
-for (var j = 8192; j < 9216; j++)
+for (var j = 0x2000; j < 0x2400; j++)
   i8 += String.fromCharCode(j);
 var o8 = "\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u2028\u2029\u202F\u205F";
 if (i8.replace(/\S+/g, "") !== o8) {
@@ -83,7 +83,7 @@ if (i8.replace(/\S+/g, "") !== o8) {
 }
 
 var i9 = "";
-for (var j = 9216; j < 10240; j++)
+for (var j = 0x2400; j < 0x2800; j++)
   i9 += String.fromCharCode(j);
 var o9 = "";
 if (i9.replace(/\S+/g, "") !== o9) {
@@ -91,7 +91,7 @@ if (i9.replace(/\S+/g, "") !== o9) {
 }
 
 var i10 = "";
-for (var j = 10240; j < 11264; j++)
+for (var j = 0x2800; j < 0x2C00; j++)
   i10 += String.fromCharCode(j);
 var o10 = "";
 if (i10.replace(/\S+/g, "") !== o10) {
@@ -99,7 +99,7 @@ if (i10.replace(/\S+/g, "") !== o10) {
 }
 
 var i11 = "";
-for (var j = 11264; j < 12288; j++)
+for (var j = 0x2C00; j < 0x3000; j++)
   i11 += String.fromCharCode(j);
 var o11 = "";
 if (i11.replace(/\S+/g, "") !== o11) {
@@ -107,7 +107,7 @@ if (i11.replace(/\S+/g, "") !== o11) {
 }
 
 var i12 = "";
-for (var j = 12288; j < 13312; j++)
+for (var j = 0x3000; j < 0x3400; j++)
   i12 += String.fromCharCode(j);
 var o12 = "\u3000";
 if (i12.replace(/\S+/g, "") !== o12) {
@@ -115,7 +115,7 @@ if (i12.replace(/\S+/g, "") !== o12) {
 }
 
 var i13 = "";
-for (var j = 13312; j < 14336; j++)
+for (var j = 0x3400; j < 0x3800; j++)
   i13 += String.fromCharCode(j);
 var o13 = "";
 if (i13.replace(/\S+/g, "") !== o13) {
@@ -123,7 +123,7 @@ if (i13.replace(/\S+/g, "") !== o13) {
 }
 
 var i14 = "";
-for (var j = 14336; j < 15360; j++)
+for (var j = 0x3800; j < 0x3C00; j++)
   i14 += String.fromCharCode(j);
 var o14 = "";
 if (i14.replace(/\S+/g, "") !== o14) {
@@ -131,7 +131,7 @@ if (i14.replace(/\S+/g, "") !== o14) {
 }
 
 var i15 = "";
-for (var j = 15360; j < 16384; j++)
+for (var j = 0x3C00; j < 0x4000; j++)
   i15 += String.fromCharCode(j);
 var o15 = "";
 if (i15.replace(/\S+/g, "") !== o15) {
@@ -139,7 +139,7 @@ if (i15.replace(/\S+/g, "") !== o15) {
 }
 
 var i16 = "";
-for (var j = 16384; j < 17408; j++)
+for (var j = 0x4000; j < 0x4400; j++)
   i16 += String.fromCharCode(j);
 var o16 = "";
 if (i16.replace(/\S+/g, "") !== o16) {
@@ -147,7 +147,7 @@ if (i16.replace(/\S+/g, "") !== o16) {
 }
 
 var i17 = "";
-for (var j = 17408; j < 18432; j++)
+for (var j = 0x4400; j < 0x4800; j++)
   i17 += String.fromCharCode(j);
 var o17 = "";
 if (i17.replace(/\S+/g, "") !== o17) {
@@ -155,7 +155,7 @@ if (i17.replace(/\S+/g, "") !== o17) {
 }
 
 var i18 = "";
-for (var j = 18432; j < 19456; j++)
+for (var j = 0x4800; j < 0x4C00; j++)
   i18 += String.fromCharCode(j);
 var o18 = "";
 if (i18.replace(/\S+/g, "") !== o18) {
@@ -163,7 +163,7 @@ if (i18.replace(/\S+/g, "") !== o18) {
 }
 
 var i19 = "";
-for (var j = 19456; j < 20480; j++)
+for (var j = 0x4C00; j < 0x5000; j++)
   i19 += String.fromCharCode(j);
 var o19 = "";
 if (i19.replace(/\S+/g, "") !== o19) {
@@ -171,7 +171,7 @@ if (i19.replace(/\S+/g, "") !== o19) {
 }
 
 var i20 = "";
-for (var j = 20480; j < 21504; j++)
+for (var j = 0x5000; j < 0x5400; j++)
   i20 += String.fromCharCode(j);
 var o20 = "";
 if (i20.replace(/\S+/g, "") !== o20) {
@@ -179,7 +179,7 @@ if (i20.replace(/\S+/g, "") !== o20) {
 }
 
 var i21 = "";
-for (var j = 21504; j < 22528; j++)
+for (var j = 0x5400; j < 0x5800; j++)
   i21 += String.fromCharCode(j);
 var o21 = "";
 if (i21.replace(/\S+/g, "") !== o21) {
@@ -187,7 +187,7 @@ if (i21.replace(/\S+/g, "") !== o21) {
 }
 
 var i22 = "";
-for (var j = 22528; j < 23552; j++)
+for (var j = 0x5800; j < 0x5C00; j++)
   i22 += String.fromCharCode(j);
 var o22 = "";
 if (i22.replace(/\S+/g, "") !== o22) {
@@ -195,7 +195,7 @@ if (i22.replace(/\S+/g, "") !== o22) {
 }
 
 var i23 = "";
-for (var j = 23552; j < 24576; j++)
+for (var j = 0x5C00; j < 0x6000; j++)
   i23 += String.fromCharCode(j);
 var o23 = "";
 if (i23.replace(/\S+/g, "") !== o23) {
@@ -203,7 +203,7 @@ if (i23.replace(/\S+/g, "") !== o23) {
 }
 
 var i24 = "";
-for (var j = 24576; j < 25600; j++)
+for (var j = 0x6000; j < 0x6400; j++)
   i24 += String.fromCharCode(j);
 var o24 = "";
 if (i24.replace(/\S+/g, "") !== o24) {
@@ -211,7 +211,7 @@ if (i24.replace(/\S+/g, "") !== o24) {
 }
 
 var i25 = "";
-for (var j = 25600; j < 26624; j++)
+for (var j = 0x6400; j < 0x6800; j++)
   i25 += String.fromCharCode(j);
 var o25 = "";
 if (i25.replace(/\S+/g, "") !== o25) {
@@ -219,7 +219,7 @@ if (i25.replace(/\S+/g, "") !== o25) {
 }
 
 var i26 = "";
-for (var j = 26624; j < 27648; j++)
+for (var j = 0x6800; j < 0x6C00; j++)
   i26 += String.fromCharCode(j);
 var o26 = "";
 if (i26.replace(/\S+/g, "") !== o26) {
@@ -227,7 +227,7 @@ if (i26.replace(/\S+/g, "") !== o26) {
 }
 
 var i27 = "";
-for (var j = 27648; j < 28672; j++)
+for (var j = 0x6C00; j < 0x7000; j++)
   i27 += String.fromCharCode(j);
 var o27 = "";
 if (i27.replace(/\S+/g, "") !== o27) {
@@ -235,7 +235,7 @@ if (i27.replace(/\S+/g, "") !== o27) {
 }
 
 var i28 = "";
-for (var j = 28672; j < 29696; j++)
+for (var j = 0x7000; j < 0x7400; j++)
   i28 += String.fromCharCode(j);
 var o28 = "";
 if (i28.replace(/\S+/g, "") !== o28) {
@@ -243,7 +243,7 @@ if (i28.replace(/\S+/g, "") !== o28) {
 }
 
 var i29 = "";
-for (var j = 29696; j < 30720; j++)
+for (var j = 0x7400; j < 0x7800; j++)
   i29 += String.fromCharCode(j);
 var o29 = "";
 if (i29.replace(/\S+/g, "") !== o29) {
@@ -251,7 +251,7 @@ if (i29.replace(/\S+/g, "") !== o29) {
 }
 
 var i30 = "";
-for (var j = 30720; j < 31744; j++)
+for (var j = 0x7800; j < 0x7C00; j++)
   i30 += String.fromCharCode(j);
 var o30 = "";
 if (i30.replace(/\S+/g, "") !== o30) {
@@ -259,7 +259,7 @@ if (i30.replace(/\S+/g, "") !== o30) {
 }
 
 var i31 = "";
-for (var j = 31744; j < 32768; j++)
+for (var j = 0x7C00; j < 0x8000; j++)
   i31 += String.fromCharCode(j);
 var o31 = "";
 if (i31.replace(/\S+/g, "") !== o31) {
@@ -267,7 +267,7 @@ if (i31.replace(/\S+/g, "") !== o31) {
 }
 
 var i32 = "";
-for (var j = 32768; j < 33792; j++)
+for (var j = 0x8000; j < 0x8400; j++)
   i32 += String.fromCharCode(j);
 var o32 = "";
 if (i32.replace(/\S+/g, "") !== o32) {
@@ -275,7 +275,7 @@ if (i32.replace(/\S+/g, "") !== o32) {
 }
 
 var i33 = "";
-for (var j = 33792; j < 34816; j++)
+for (var j = 0x8400; j < 0x8800; j++)
   i33 += String.fromCharCode(j);
 var o33 = "";
 if (i33.replace(/\S+/g, "") !== o33) {
@@ -283,7 +283,7 @@ if (i33.replace(/\S+/g, "") !== o33) {
 }
 
 var i34 = "";
-for (var j = 34816; j < 35840; j++)
+for (var j = 0x8800; j < 0x8C00; j++)
   i34 += String.fromCharCode(j);
 var o34 = "";
 if (i34.replace(/\S+/g, "") !== o34) {
@@ -291,7 +291,7 @@ if (i34.replace(/\S+/g, "") !== o34) {
 }
 
 var i35 = "";
-for (var j = 35840; j < 36864; j++)
+for (var j = 0x8C00; j < 0x9000; j++)
   i35 += String.fromCharCode(j);
 var o35 = "";
 if (i35.replace(/\S+/g, "") !== o35) {
@@ -299,7 +299,7 @@ if (i35.replace(/\S+/g, "") !== o35) {
 }
 
 var i36 = "";
-for (var j = 36864; j < 37888; j++)
+for (var j = 0x9000; j < 0x9400; j++)
   i36 += String.fromCharCode(j);
 var o36 = "";
 if (i36.replace(/\S+/g, "") !== o36) {
@@ -307,7 +307,7 @@ if (i36.replace(/\S+/g, "") !== o36) {
 }
 
 var i37 = "";
-for (var j = 37888; j < 38912; j++)
+for (var j = 0x9400; j < 0x9800; j++)
   i37 += String.fromCharCode(j);
 var o37 = "";
 if (i37.replace(/\S+/g, "") !== o37) {
@@ -315,7 +315,7 @@ if (i37.replace(/\S+/g, "") !== o37) {
 }
 
 var i38 = "";
-for (var j = 38912; j < 39936; j++)
+for (var j = 0x9800; j < 0x9C00; j++)
   i38 += String.fromCharCode(j);
 var o38 = "";
 if (i38.replace(/\S+/g, "") !== o38) {
@@ -323,7 +323,7 @@ if (i38.replace(/\S+/g, "") !== o38) {
 }
 
 var i39 = "";
-for (var j = 39936; j < 40960; j++)
+for (var j = 0x9C00; j < 0xA000; j++)
   i39 += String.fromCharCode(j);
 var o39 = "";
 if (i39.replace(/\S+/g, "") !== o39) {
@@ -331,7 +331,7 @@ if (i39.replace(/\S+/g, "") !== o39) {
 }
 
 var i40 = "";
-for (var j = 40960; j < 41984; j++)
+for (var j = 0xA000; j < 0xA400; j++)
   i40 += String.fromCharCode(j);
 var o40 = "";
 if (i40.replace(/\S+/g, "") !== o40) {
@@ -339,7 +339,7 @@ if (i40.replace(/\S+/g, "") !== o40) {
 }
 
 var i41 = "";
-for (var j = 41984; j < 43008; j++)
+for (var j = 0xA400; j < 0xA800; j++)
   i41 += String.fromCharCode(j);
 var o41 = "";
 if (i41.replace(/\S+/g, "") !== o41) {
@@ -347,7 +347,7 @@ if (i41.replace(/\S+/g, "") !== o41) {
 }
 
 var i42 = "";
-for (var j = 43008; j < 44032; j++)
+for (var j = 0xA800; j < 0xAC00; j++)
   i42 += String.fromCharCode(j);
 var o42 = "";
 if (i42.replace(/\S+/g, "") !== o42) {
@@ -355,7 +355,7 @@ if (i42.replace(/\S+/g, "") !== o42) {
 }
 
 var i43 = "";
-for (var j = 44032; j < 45056; j++)
+for (var j = 0xAC00; j < 0xB000; j++)
   i43 += String.fromCharCode(j);
 var o43 = "";
 if (i43.replace(/\S+/g, "") !== o43) {
@@ -363,7 +363,7 @@ if (i43.replace(/\S+/g, "") !== o43) {
 }
 
 var i44 = "";
-for (var j = 45056; j < 46080; j++)
+for (var j = 0xB000; j < 0xB400; j++)
   i44 += String.fromCharCode(j);
 var o44 = "";
 if (i44.replace(/\S+/g, "") !== o44) {
@@ -371,7 +371,7 @@ if (i44.replace(/\S+/g, "") !== o44) {
 }
 
 var i45 = "";
-for (var j = 46080; j < 47104; j++)
+for (var j = 0xB400; j < 0xB800; j++)
   i45 += String.fromCharCode(j);
 var o45 = "";
 if (i45.replace(/\S+/g, "") !== o45) {
@@ -379,7 +379,7 @@ if (i45.replace(/\S+/g, "") !== o45) {
 }
 
 var i46 = "";
-for (var j = 47104; j < 48128; j++)
+for (var j = 0xB800; j < 0xBC00; j++)
   i46 += String.fromCharCode(j);
 var o46 = "";
 if (i46.replace(/\S+/g, "") !== o46) {
@@ -387,7 +387,7 @@ if (i46.replace(/\S+/g, "") !== o46) {
 }
 
 var i47 = "";
-for (var j = 48128; j < 49152; j++)
+for (var j = 0xBC00; j < 0xC000; j++)
   i47 += String.fromCharCode(j);
 var o47 = "";
 if (i47.replace(/\S+/g, "") !== o47) {
@@ -395,7 +395,7 @@ if (i47.replace(/\S+/g, "") !== o47) {
 }
 
 var i48 = "";
-for (var j = 49152; j < 50176; j++)
+for (var j = 0xC000; j < 0xC400; j++)
   i48 += String.fromCharCode(j);
 var o48 = "";
 if (i48.replace(/\S+/g, "") !== o48) {
@@ -403,7 +403,7 @@ if (i48.replace(/\S+/g, "") !== o48) {
 }
 
 var i49 = "";
-for (var j = 50176; j < 51200; j++)
+for (var j = 0xC400; j < 0xC800; j++)
   i49 += String.fromCharCode(j);
 var o49 = "";
 if (i49.replace(/\S+/g, "") !== o49) {
@@ -411,7 +411,7 @@ if (i49.replace(/\S+/g, "") !== o49) {
 }
 
 var i50 = "";
-for (var j = 51200; j < 52224; j++)
+for (var j = 0xC800; j < 0xCC00; j++)
   i50 += String.fromCharCode(j);
 var o50 = "";
 if (i50.replace(/\S+/g, "") !== o50) {
@@ -419,7 +419,7 @@ if (i50.replace(/\S+/g, "") !== o50) {
 }
 
 var i51 = "";
-for (var j = 52224; j < 53248; j++)
+for (var j = 0xCC00; j < 0xD000; j++)
   i51 += String.fromCharCode(j);
 var o51 = "";
 if (i51.replace(/\S+/g, "") !== o51) {
@@ -427,7 +427,7 @@ if (i51.replace(/\S+/g, "") !== o51) {
 }
 
 var i52 = "";
-for (var j = 53248; j < 54272; j++)
+for (var j = 0xD000; j < 0xD400; j++)
   i52 += String.fromCharCode(j);
 var o52 = "";
 if (i52.replace(/\S+/g, "") !== o52) {
@@ -435,7 +435,7 @@ if (i52.replace(/\S+/g, "") !== o52) {
 }
 
 var i53 = "";
-for (var j = 54272; j < 55296; j++)
+for (var j = 0xD400; j < 0xD800; j++)
   i53 += String.fromCharCode(j);
 var o53 = "";
 if (i53.replace(/\S+/g, "") !== o53) {
@@ -443,7 +443,7 @@ if (i53.replace(/\S+/g, "") !== o53) {
 }
 
 var i54 = "";
-for (var j = 55296; j < 56320; j++)
+for (var j = 0xD800; j < 0xDC00; j++)
   i54 += String.fromCharCode(j);
 var o54 = "";
 if (i54.replace(/\S+/g, "") !== o54) {
@@ -451,7 +451,7 @@ if (i54.replace(/\S+/g, "") !== o54) {
 }
 
 var i55 = "";
-for (var j = 56320; j < 57344; j++)
+for (var j = 0xDC00; j < 0xE000; j++)
   i55 += String.fromCharCode(j);
 var o55 = "";
 if (i55.replace(/\S+/g, "") !== o55) {
@@ -459,7 +459,7 @@ if (i55.replace(/\S+/g, "") !== o55) {
 }
 
 var i56 = "";
-for (var j = 57344; j < 58368; j++)
+for (var j = 0xE000; j < 0xE400; j++)
   i56 += String.fromCharCode(j);
 var o56 = "";
 if (i56.replace(/\S+/g, "") !== o56) {
@@ -467,7 +467,7 @@ if (i56.replace(/\S+/g, "") !== o56) {
 }
 
 var i57 = "";
-for (var j = 58368; j < 59392; j++)
+for (var j = 0xE400; j < 0xE800; j++)
   i57 += String.fromCharCode(j);
 var o57 = "";
 if (i57.replace(/\S+/g, "") !== o57) {
@@ -475,7 +475,7 @@ if (i57.replace(/\S+/g, "") !== o57) {
 }
 
 var i58 = "";
-for (var j = 59392; j < 60416; j++)
+for (var j = 0xE800; j < 0xEC00; j++)
   i58 += String.fromCharCode(j);
 var o58 = "";
 if (i58.replace(/\S+/g, "") !== o58) {
@@ -483,7 +483,7 @@ if (i58.replace(/\S+/g, "") !== o58) {
 }
 
 var i59 = "";
-for (var j = 60416; j < 61440; j++)
+for (var j = 0xEC00; j < 0xF000; j++)
   i59 += String.fromCharCode(j);
 var o59 = "";
 if (i59.replace(/\S+/g, "") !== o59) {
@@ -491,7 +491,7 @@ if (i59.replace(/\S+/g, "") !== o59) {
 }
 
 var i60 = "";
-for (var j = 61440; j < 62464; j++)
+for (var j = 0xF000; j < 0xF400; j++)
   i60 += String.fromCharCode(j);
 var o60 = "";
 if (i60.replace(/\S+/g, "") !== o60) {
@@ -499,7 +499,7 @@ if (i60.replace(/\S+/g, "") !== o60) {
 }
 
 var i61 = "";
-for (var j = 62464; j < 63488; j++)
+for (var j = 0xF400; j < 0xF800; j++)
   i61 += String.fromCharCode(j);
 var o61 = "";
 if (i61.replace(/\S+/g, "") !== o61) {
@@ -507,7 +507,7 @@ if (i61.replace(/\S+/g, "") !== o61) {
 }
 
 var i62 = "";
-for (var j = 63488; j < 64512; j++)
+for (var j = 0xF800; j < 0xFC00; j++)
   i62 += String.fromCharCode(j);
 var o62 = "";
 if (i62.replace(/\S+/g, "") !== o62) {
@@ -515,8 +515,8 @@ if (i62.replace(/\S+/g, "") !== o62) {
 }
 
 var i63 = "";
-for (var j = 64512; j < 65536; j++) {
-  if (j===65279) { continue;} //Ignore BOM
+for (var j = 0xFC00; j < 0x10000; j++) {
+  if (j === 0xFEFF) { continue; } //Ignore BOM
   i63 += String.fromCharCode(j);
 }
 var o63 = "";
@@ -524,7 +524,7 @@ if (i63.replace(/\S+/g, "") !== o63) {
   $ERROR("#63: Error matching character class \S between character fc00 and ffff");
 }
 
-var i64 = String.fromCharCode(65279);
+var i64 = String.fromCharCode(0xFEFF);
 if (i64.replace(/\S/g, "") === "") {
   $ERROR("#64: Error matching character class \S for BOM (feff)");
 }
diff --git a/test/built-ins/String/prototype/toLocaleLowerCase/Final_Sigma_U180E.js b/test/built-ins/String/prototype/toLocaleLowerCase/Final_Sigma_U180E.js
new file mode 100644
index 0000000000..0f0b820b3b
--- /dev/null
+++ b/test/built-ins/String/prototype/toLocaleLowerCase/Final_Sigma_U180E.js
@@ -0,0 +1,59 @@
+// Copyright (C) 2016 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-string.prototype.tolocalelowercase
+description: >
+    Check if String.prototype.toLocaleLowerCase supports conditional mappings defined in SpecialCasings,
+    test Final_Sigma context with Mongolian Vowel Separator
+info: >
+    The result must be derived according to the locale-insensitive case mappings in the Unicode Character
+    Database (this explicitly includes not only the UnicodeData.txt file, but also all locale-insensitive
+    mappings in the SpecialCasings.txt file that accompanies it).
+---*/
+
+// SpecialCasing.txt, conditional, language-insensitive mappings.
+
+// <code>; <lower>; <title>; <upper>; (<condition_list>;)? # <comment>
+// 03A3; 03C2; 03A3; 03A3; Final_Sigma; # GREEK CAPITAL LETTER SIGMA
+// 03A3; 03C3; 03A3; 03A3; # GREEK CAPITAL LETTER SIGMA
+
+// Final_Sigma is defined in Unicode 8.0, 3.13 Default Case Algorithms
+// General_Category of Mongolian Vowel Separator is Cf (Format), characters in Cf are Case_Ignorable.
+
+
+// Sigma preceded by Mongolian Vowel Separator.
+assert.sameValue(
+  "A\u180E\u03A3".toLocaleLowerCase(),
+  "a\u180E\u03C2",
+  "Sigma preceded by LATIN CAPITAL LETTER A, MONGOLIAN VOWEL SEPARATOR"
+);
+assert.sameValue(
+  "A\u180E\u03A3B".toLocaleLowerCase(),
+  "a\u180E\u03C3b",
+  "Sigma preceded by LATIN CAPITAL LETTER A, MONGOLIAN VOWEL SEPARATOR, followed by LATIN CAPITAL LETTER B"
+);
+
+// Sigma followed by Mongolian Vowel Separator.
+assert.sameValue(
+  "A\u03A3\u180E".toLocaleLowerCase(),
+  "a\u03C2\u180E",
+  "Sigma preceded by LATIN CAPITAL LETTER A, followed by MONGOLIAN VOWEL SEPARATOR"
+);
+assert.sameValue(
+  "A\u03A3\u180EB".toLocaleLowerCase(),
+  "a\u03C3\u180Eb",
+  "Sigma preceded by LATIN CAPITAL LETTER A, followed by MONGOLIAN VOWEL SEPARATOR, LATIN CAPITAL LETTER B"
+);
+
+// Sigma preceded and followed by Mongolian Vowel Separator.
+assert.sameValue(
+  "A\u180E\u03A3\u180E".toLocaleLowerCase(),
+  "a\u180E\u03C2\u180E",
+  "Sigma preceded by LATIN CAPITAL LETTER A, MONGOLIAN VOWEL SEPARATOR, followed by MONGOLIAN VOWEL SEPARATOR"
+);
+assert.sameValue(
+  "A\u180E\u03A3\u180EB".toLocaleLowerCase(),
+  "a\u180E\u03C3\u180Eb",
+  "Sigma preceded by LATIN CAPITAL LETTER A, MONGOLIAN VOWEL SEPARATOR, followed by MONGOLIAN VOWEL SEPARATOR, LATIN CAPITAL LETTER B"
+);
diff --git a/test/built-ins/String/prototype/toLowerCase/Final_Sigma_U180E.js b/test/built-ins/String/prototype/toLowerCase/Final_Sigma_U180E.js
new file mode 100644
index 0000000000..8d50368228
--- /dev/null
+++ b/test/built-ins/String/prototype/toLowerCase/Final_Sigma_U180E.js
@@ -0,0 +1,59 @@
+// Copyright (C) 2016 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-string.prototype.tolowercase
+description: >
+    Check if String.prototype.toLowerCase supports conditional mappings defined in SpecialCasings,
+    test Final_Sigma context with Mongolian Vowel Separator
+info: >
+    The result must be derived according to the locale-insensitive case mappings in the Unicode Character
+    Database (this explicitly includes not only the UnicodeData.txt file, but also all locale-insensitive
+    mappings in the SpecialCasings.txt file that accompanies it).
+---*/
+
+// SpecialCasing.txt, conditional, language-insensitive mappings.
+
+// <code>; <lower>; <title>; <upper>; (<condition_list>;)? # <comment>
+// 03A3; 03C2; 03A3; 03A3; Final_Sigma; # GREEK CAPITAL LETTER SIGMA
+// 03A3; 03C3; 03A3; 03A3; # GREEK CAPITAL LETTER SIGMA
+
+// Final_Sigma is defined in Unicode 8.0, 3.13 Default Case Algorithms
+// General_Category of Mongolian Vowel Separator is Cf (Format), characters in Cf are Case_Ignorable.
+
+
+// Sigma preceded by Mongolian Vowel Separator.
+assert.sameValue(
+  "A\u180E\u03A3".toLowerCase(),
+  "a\u180E\u03C2",
+  "Sigma preceded by LATIN CAPITAL LETTER A, MONGOLIAN VOWEL SEPARATOR"
+);
+assert.sameValue(
+  "A\u180E\u03A3B".toLowerCase(),
+  "a\u180E\u03C3b",
+  "Sigma preceded by LATIN CAPITAL LETTER A, MONGOLIAN VOWEL SEPARATOR, followed by LATIN CAPITAL LETTER B"
+);
+
+// Sigma followed by Mongolian Vowel Separator.
+assert.sameValue(
+  "A\u03A3\u180E".toLowerCase(),
+  "a\u03C2\u180E",
+  "Sigma preceded by LATIN CAPITAL LETTER A, followed by MONGOLIAN VOWEL SEPARATOR"
+);
+assert.sameValue(
+  "A\u03A3\u180EB".toLowerCase(),
+  "a\u03C3\u180Eb",
+  "Sigma preceded by LATIN CAPITAL LETTER A, followed by MONGOLIAN VOWEL SEPARATOR, LATIN CAPITAL LETTER B"
+);
+
+// Sigma preceded and followed by Mongolian Vowel Separator.
+assert.sameValue(
+  "A\u180E\u03A3\u180E".toLowerCase(),
+  "a\u180E\u03C2\u180E",
+  "Sigma preceded by LATIN CAPITAL LETTER A, MONGOLIAN VOWEL SEPARATOR, followed by MONGOLIAN VOWEL SEPARATOR"
+);
+assert.sameValue(
+  "A\u180E\u03A3\u180EB".toLowerCase(),
+  "a\u180E\u03C3\u180Eb",
+  "Sigma preceded by LATIN CAPITAL LETTER A, MONGOLIAN VOWEL SEPARATOR, followed by MONGOLIAN VOWEL SEPARATOR, LATIN CAPITAL LETTER B"
+);
diff --git a/test/built-ins/String/prototype/trim/15.5.4.20-3-2.js b/test/built-ins/String/prototype/trim/15.5.4.20-3-2.js
index 6be919fc02..20cf7394cd 100644
--- a/test/built-ins/String/prototype/trim/15.5.4.20-3-2.js
+++ b/test/built-ins/String/prototype/trim/15.5.4.20-3-2.js
@@ -6,6 +6,6 @@ es5id: 15.5.4.20-3-2
 description: String.prototype.trim - 'S' is a string with all WhiteSpace
 ---*/
 
-        var whiteSpacesStr = "\u0009\u000A\u000B\u000C\u000D\u0020\u00A0\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u2028\u2029\u202F\u205F\u3000\uFEFF";
+var whiteSpacesStr = "\u0009\u000A\u000B\u000C\u000D\u0020\u00A0\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u2028\u2029\u202F\u205F\u3000\uFEFF";
 
 assert.sameValue(whiteSpacesStr.trim(), "", 'whiteSpacesStr.trim()');
diff --git a/test/built-ins/String/prototype/trim/15.5.4.20-3-3.js b/test/built-ins/String/prototype/trim/15.5.4.20-3-3.js
index 94f9121bcb..f06b76e98c 100644
--- a/test/built-ins/String/prototype/trim/15.5.4.20-3-3.js
+++ b/test/built-ins/String/prototype/trim/15.5.4.20-3-3.js
@@ -8,8 +8,8 @@ description: >
     WhiteSpace and LineTerminator
 ---*/
 
-        var lineTerminatorsStr = "\u000A\u000D\u2028\u2029";
-        var whiteSpacesStr = "\u0009\u000A\u000B\u000C\u000D\u0020\u00A0\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u2028\u2029\u202F\u205F\u3000\uFEFF";
-        var str = whiteSpacesStr + lineTerminatorsStr;
+var lineTerminatorsStr = "\u000A\u000D\u2028\u2029";
+var whiteSpacesStr = "\u0009\u000A\u000B\u000C\u000D\u0020\u00A0\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u2028\u2029\u202F\u205F\u3000\uFEFF";
+var str = whiteSpacesStr + lineTerminatorsStr;
 
 assert.sameValue(str.trim(), "", 'str.trim()');
diff --git a/test/built-ins/String/prototype/trim/15.5.4.20-3-4.js b/test/built-ins/String/prototype/trim/15.5.4.20-3-4.js
index a00b8ee11d..f430ff4d87 100644
--- a/test/built-ins/String/prototype/trim/15.5.4.20-3-4.js
+++ b/test/built-ins/String/prototype/trim/15.5.4.20-3-4.js
@@ -8,8 +8,8 @@ description: >
     LineTerminator and all WhiteSpace
 ---*/
 
-        var lineTerminatorsStr = "\u000A\u000D\u2028\u2029";
-        var whiteSpacesStr = "\u0009\u000A\u000B\u000C\u000D\u0020\u00A0\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u2028\u2029\u202F\u205F\u3000\uFEFF";
-        var str = whiteSpacesStr + lineTerminatorsStr + "abc";
+var lineTerminatorsStr = "\u000A\u000D\u2028\u2029";
+var whiteSpacesStr = "\u0009\u000A\u000B\u000C\u000D\u0020\u00A0\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u2028\u2029\u202F\u205F\u3000\uFEFF";
+var str = whiteSpacesStr + lineTerminatorsStr + "abc";
 
 assert.sameValue(str.trim(), "abc", 'str.trim()');
diff --git a/test/built-ins/String/prototype/trim/15.5.4.20-3-5.js b/test/built-ins/String/prototype/trim/15.5.4.20-3-5.js
index c13159165a..c488c91eeb 100644
--- a/test/built-ins/String/prototype/trim/15.5.4.20-3-5.js
+++ b/test/built-ins/String/prototype/trim/15.5.4.20-3-5.js
@@ -8,8 +8,8 @@ description: >
     LineTerminator and all WhiteSpace
 ---*/
 
-        var lineTerminatorsStr = "\u000A\u000D\u2028\u2029";
-        var whiteSpacesStr = "\u0009\u000A\u000B\u000C\u000D\u0020\u00A0\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u2028\u2029\u202F\u205F\u3000\uFEFF";
-        var str = "abc" + whiteSpacesStr + lineTerminatorsStr ;
+var lineTerminatorsStr = "\u000A\u000D\u2028\u2029";
+var whiteSpacesStr = "\u0009\u000A\u000B\u000C\u000D\u0020\u00A0\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u2028\u2029\u202F\u205F\u3000\uFEFF";
+var str = "abc" + whiteSpacesStr + lineTerminatorsStr ;
 
 assert.sameValue(str.trim(), "abc", 'str.trim()');
diff --git a/test/built-ins/String/prototype/trim/15.5.4.20-3-6.js b/test/built-ins/String/prototype/trim/15.5.4.20-3-6.js
index 875d3357bb..ec4a25f444 100644
--- a/test/built-ins/String/prototype/trim/15.5.4.20-3-6.js
+++ b/test/built-ins/String/prototype/trim/15.5.4.20-3-6.js
@@ -9,8 +9,8 @@ description: >
     LineTerminator and all WhiteSpace
 ---*/
 
-        var lineTerminatorsStr = "\u000A\u000D\u2028\u2029";
-        var whiteSpacesStr = "\u0009\u000A\u000B\u000C\u000D\u0020\u00A0\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u2028\u2029\u202F\u205F\u3000\uFEFF";
-        var str = whiteSpacesStr + lineTerminatorsStr + "abc" + whiteSpacesStr + lineTerminatorsStr;
+var lineTerminatorsStr = "\u000A\u000D\u2028\u2029";
+var whiteSpacesStr = "\u0009\u000A\u000B\u000C\u000D\u0020\u00A0\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u2028\u2029\u202F\u205F\u3000\uFEFF";
+var str = whiteSpacesStr + lineTerminatorsStr + "abc" + whiteSpacesStr + lineTerminatorsStr;
 
 assert.sameValue(str.trim(), "abc", 'str.trim()');
diff --git a/test/built-ins/String/prototype/trim/15.5.4.20-3-7.js b/test/built-ins/String/prototype/trim/15.5.4.20-3-7.js
index 65b0439f22..22b5ba4a60 100644
--- a/test/built-ins/String/prototype/trim/15.5.4.20-3-7.js
+++ b/test/built-ins/String/prototype/trim/15.5.4.20-3-7.js
@@ -8,8 +8,8 @@ description: >
     LineTerminator and WhiteSpace in the middle
 ---*/
 
-        var lineTerminatorsStr = "\u000A\u000D\u2028\u2029";
-        var whiteSpacesStr = "\u0009\u000A\u000B\u000C\u000D\u0020\u00A0\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u2028\u2029\u202F\u205F\u3000\uFEFF";
-        var str = "ab" + whiteSpacesStr + lineTerminatorsStr + "cd";
+var lineTerminatorsStr = "\u000A\u000D\u2028\u2029";
+var whiteSpacesStr = "\u0009\u000A\u000B\u000C\u000D\u0020\u00A0\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u2028\u2029\u202F\u205F\u3000\uFEFF";
+var str = "ab" + whiteSpacesStr + lineTerminatorsStr + "cd";
 
 assert.sameValue(str.trim(), str, 'str.trim()');
diff --git a/test/built-ins/String/prototype/trim/u180e.js b/test/built-ins/String/prototype/trim/u180e.js
new file mode 100644
index 0000000000..4232999e35
--- /dev/null
+++ b/test/built-ins/String/prototype/trim/u180e.js
@@ -0,0 +1,17 @@
+// Copyright (C) 2016 Mathias Bynens. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-white-space
+description: >
+  U+180E is no longer a Unicode `Space_Separator` symbol as of Unicode v6.3.0.
+info: >
+  String.prototype.trim ( )
+
+  3. [...] The definition of white space is the union of |WhiteSpace| and
+     |LineTerminator|.
+---*/
+
+assert.sameValue("_\u180E".trim(), "_\u180E");
+assert.sameValue("\u180E".trim(), "\u180E");
+assert.sameValue("\u180E_".trim(), "\u180E_");
diff --git a/test/built-ins/parseFloat/S15.1.2.3_A2_T10.js b/test/built-ins/parseFloat/S15.1.2.3_A2_T10.js
index 5b72b50bea..fe97fe848a 100644
--- a/test/built-ins/parseFloat/S15.1.2.3_A2_T10.js
+++ b/test/built-ins/parseFloat/S15.1.2.3_A2_T10.js
@@ -11,8 +11,8 @@ description: "StrWhiteSpaceChar :: USP"
 var n;
 var count = 0;
 var errorCount = 0;
-var uspU = ["\u1680", "\u180E", "\u2000", "\u2001", "\u2002", "\u2003", "\u2004", "\u2005", "\u2006", "\u2007", "\u2008", "\u2009", "\u200A", "\u202F", "\u205F", "\u3000"];
-var uspS = ["1680", "180E", "2000", "2001", "2002", "2003", "2004", "2005", "2006", "2007", "2008", "2009", "200A", "202F", "205F", "3000"];
+var uspU = ["\u1680", "\u2000", "\u2001", "\u2002", "\u2003", "\u2004", "\u2005", "\u2006", "\u2007", "\u2008", "\u2009", "\u200A", "\u202F", "\u205F", "\u3000"];
+var uspS = ["1680", "2000", "2001", "2002", "2003", "2004", "2005", "2006", "2007", "2008", "2009", "200A", "202F", "205F", "3000"];
 for (var index = 0; index < uspU.length; index++) {
   var result = true;  
   n = false;
@@ -35,6 +35,6 @@ for (var index = 0; index < uspU.length; index++) {
   count++;
 }
 
-if (errorCount > 0) {  
+if (errorCount > 0) {
   $ERROR('Total error: ' + errorCount + ' bad Unicode character in ' + count);
 }
diff --git a/test/built-ins/parseFloat/S15.1.2.3_A2_T10_U180E.js b/test/built-ins/parseFloat/S15.1.2.3_A2_T10_U180E.js
new file mode 100644
index 0000000000..6d29aebd9d
--- /dev/null
+++ b/test/built-ins/parseFloat/S15.1.2.3_A2_T10_U180E.js
@@ -0,0 +1,27 @@
+// Copyright (C) 2016 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-parsefloat-string
+description: >
+  Leading U+180E is not recognized as whitespace
+info: >
+  18.2.4 parseFloat (string)
+
+  ...
+  3. Let trimmedString be a substring of inputString consisting of the
+     leftmost code unit that is not a StrWhiteSpaceChar and all code units
+     to the right of that code unit. (In other words, remove leading white
+     space.) If inputString does not contain any such code units, let
+     trimmedString be the empty string.
+  4. If neither trimmedString nor any prefix of trimmedString satisfies the
+     syntax of a StrDecimalLiteral (see 7.1.3.1), return NaN.
+  ...
+
+---*/
+
+var mongolianVowelSeparator = "\u180E";
+
+assert.sameValue(parseFloat(mongolianVowelSeparator + "1.1"), NaN, "Single leading U+180E");
+assert.sameValue(parseFloat(mongolianVowelSeparator + mongolianVowelSeparator + mongolianVowelSeparator + "1.1"), NaN, "Multiple leading U+180E");
+assert.sameValue(parseFloat(mongolianVowelSeparator), NaN, "Only U+180E");
diff --git a/test/built-ins/parseInt/S15.1.2.2_A2_T10.js b/test/built-ins/parseInt/S15.1.2.2_A2_T10.js
index e23704e3be..3736f4d982 100644
--- a/test/built-ins/parseInt/S15.1.2.2_A2_T10.js
+++ b/test/built-ins/parseInt/S15.1.2.2_A2_T10.js
@@ -11,8 +11,8 @@ description: "StrWhiteSpaceChar :: USP"
 var n;
 var count = 0;
 var errorCount = 0;
-var uspU = ["\u1680", "\u180E", "\u2000", "\u2001", "\u2002", "\u2003", "\u2004", "\u2005", "\u2006", "\u2007", "\u2008", "\u2009", "\u200A", "\u202F", "\u205F", "\u3000"];
-var uspS = ["1680", "180E", "2000", "2001", "2002", "2003", "2004", "2005", "2006", "2007", "2008", "2009", "200A", "202F", "205F", "3000"];
+var uspU = ["\u1680", "\u2000", "\u2001", "\u2002", "\u2003", "\u2004", "\u2005", "\u2006", "\u2007", "\u2008", "\u2009", "\u200A", "\u202F", "\u205F", "\u3000"];
+var uspS = ["1680", "2000", "2001", "2002", "2003", "2004", "2005", "2006", "2007", "2008", "2009", "200A", "202F", "205F", "3000"];
 
 for (var index = 0; index < uspU.length; index++) {
   var result = true;
@@ -36,6 +36,6 @@ for (var index = 0; index < uspU.length; index++) {
   count++;
 }
 
-if (errorCount > 0) {  
+if (errorCount > 0) {
   $ERROR('Total error: ' + errorCount + ' bad Unicode character in ' + count);
 }
diff --git a/test/built-ins/parseInt/S15.1.2.2_A2_T10_U180E.js b/test/built-ins/parseInt/S15.1.2.2_A2_T10_U180E.js
new file mode 100644
index 0000000000..363383b925
--- /dev/null
+++ b/test/built-ins/parseInt/S15.1.2.2_A2_T10_U180E.js
@@ -0,0 +1,29 @@
+// Copyright (C) 2016 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-parseint-string-radix
+description: >
+  Leading U+180E is not recognized as whitespace
+info: >
+  18.2.5 parseInt (string , radix)
+
+  ...
+  3. Let S be a newly created substring of inputString consisting of the
+     first code unit that is not a StrWhiteSpaceChar and all code units
+     following that code unit. (In other words, remove leading white
+     space.) If inputString does not contain any such code unit, let S
+     be the empty string
+  ...
+  13. If S contains a code unit that is not a radix-R digit, let Z be
+      the substring of S consisting of all code units before the first
+      such code unit; otherwise, let Z be S.
+  14. If Z is empty, return NaN.
+  ...
+---*/
+
+var mongolianVowelSeparator = "\u180E";
+
+assert.sameValue(parseInt(mongolianVowelSeparator + "1"), NaN, "Single leading U+180E");
+assert.sameValue(parseInt(mongolianVowelSeparator + mongolianVowelSeparator + mongolianVowelSeparator + "1"), NaN, "Multiple leading U+180E");
+assert.sameValue(parseInt(mongolianVowelSeparator), NaN, "Only U+180E");
diff --git a/test/language/comments/mongolian-vowel-separator-multi.js b/test/language/comments/mongolian-vowel-separator-multi.js
new file mode 100644
index 0000000000..70a52708d0
--- /dev/null
+++ b/test/language/comments/mongolian-vowel-separator-multi.js
@@ -0,0 +1,25 @@
+// Copyright (C) 2016 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-unicode-format-control-characters
+description: >
+  Mongolian Vowel Separator can appear in multi-line comments.
+info: >
+  11.1 Unicode Format-Control Characters
+
+  The Unicode format-control characters (i.e., the characters in category “Cf”
+  in the Unicode Character Database such as LEFT-TO-RIGHT MARK or RIGHT-TO-LEFT
+  MARK) are control codes used to control the formatting of a range of text in
+  the absence of higher-level protocols for this (such as mark-up languages).
+
+  It is useful to allow format-control characters in source text to facilitate
+  editing and display. All format control characters may be used within comments,
+  and within string literals, template literals, and regular expression literals.
+---*/
+
+// U+180E in comments; UTF8(0x180E) = 0xE1 0xA0 0x8E
+assert.sameValue(
+  0, /*á Ž  multi-line comment with U+180E */
+  0
+);
diff --git a/test/language/comments/mongolian-vowel-separator-single-eval.js b/test/language/comments/mongolian-vowel-separator-single-eval.js
new file mode 100644
index 0000000000..9c0705ac06
--- /dev/null
+++ b/test/language/comments/mongolian-vowel-separator-single-eval.js
@@ -0,0 +1,21 @@
+// Copyright (C) 2016 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-unicode-format-control-characters
+description: >
+  Mongolian Vowel Separator can appear in single-line comments (eval code).
+info: >
+  11.1 Unicode Format-Control Characters
+
+  The Unicode format-control characters (i.e., the characters in category “Cf”
+  in the Unicode Character Database such as LEFT-TO-RIGHT MARK or RIGHT-TO-LEFT
+  MARK) are control codes used to control the formatting of a range of text in
+  the absence of higher-level protocols for this (such as mark-up languages).
+
+  It is useful to allow format-control characters in source text to facilitate
+  editing and display. All format control characters may be used within comments,
+  and within string literals, template literals, and regular expression literals.
+---*/
+
+assert.sameValue(eval("0 //\u180E"), 0);
diff --git a/test/language/comments/mongolian-vowel-separator-single.js b/test/language/comments/mongolian-vowel-separator-single.js
new file mode 100644
index 0000000000..c1704522bf
--- /dev/null
+++ b/test/language/comments/mongolian-vowel-separator-single.js
@@ -0,0 +1,25 @@
+// Copyright (C) 2016 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-unicode-format-control-characters
+description: >
+  Mongolian Vowel Separator can appear in single-line comments.
+info: >
+  11.1 Unicode Format-Control Characters
+
+  The Unicode format-control characters (i.e., the characters in category “Cf”
+  in the Unicode Character Database such as LEFT-TO-RIGHT MARK or RIGHT-TO-LEFT
+  MARK) are control codes used to control the formatting of a range of text in
+  the absence of higher-level protocols for this (such as mark-up languages).
+
+  It is useful to allow format-control characters in source text to facilitate
+  editing and display. All format control characters may be used within comments,
+  and within string literals, template literals, and regular expression literals.
+---*/
+
+// U+180E in comments; UTF8(0x180E) = 0xE1 0xA0 0x8E
+assert.sameValue(
+  0, //á Ž  single-line comment with U+180E
+  0
+);
diff --git a/test/language/expressions/template-literal/mongolian-vowel-separator-eval.js b/test/language/expressions/template-literal/mongolian-vowel-separator-eval.js
new file mode 100644
index 0000000000..74f73fcd4e
--- /dev/null
+++ b/test/language/expressions/template-literal/mongolian-vowel-separator-eval.js
@@ -0,0 +1,21 @@
+// Copyright (C) 2016 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-unicode-format-control-characters
+description: >
+  Mongolian Vowel Separator can appear in template literals (eval code).
+info: >
+  11.1 Unicode Format-Control Characters
+
+  The Unicode format-control characters (i.e., the characters in category “Cf”
+  in the Unicode Character Database such as LEFT-TO-RIGHT MARK or RIGHT-TO-LEFT
+  MARK) are control codes used to control the formatting of a range of text in
+  the absence of higher-level protocols for this (such as mark-up languages).
+
+  It is useful to allow format-control characters in source text to facilitate
+  editing and display. All format control characters may be used within comments,
+  and within string literals, template literals, and regular expression literals.
+---*/
+
+assert.sameValue(eval("`\u180E`"), "\u180E");
diff --git a/test/language/expressions/template-literal/mongolian-vowel-separator.js b/test/language/expressions/template-literal/mongolian-vowel-separator.js
new file mode 100644
index 0000000000..5e423434ba
--- /dev/null
+++ b/test/language/expressions/template-literal/mongolian-vowel-separator.js
@@ -0,0 +1,22 @@
+// Copyright (C) 2016 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-unicode-format-control-characters
+description: >
+  Mongolian Vowel Separator can appear in template literals.
+info: >
+  11.1 Unicode Format-Control Characters
+
+  The Unicode format-control characters (i.e., the characters in category “Cf”
+  in the Unicode Character Database such as LEFT-TO-RIGHT MARK or RIGHT-TO-LEFT
+  MARK) are control codes used to control the formatting of a range of text in
+  the absence of higher-level protocols for this (such as mark-up languages).
+
+  It is useful to allow format-control characters in source text to facilitate
+  editing and display. All format control characters may be used within comments,
+  and within string literals, template literals, and regular expression literals.
+---*/
+
+// U+180E in template literals; UTF8(0x180E) = 0xE1 0xA0 0x8E
+assert.sameValue(`á Ž`, "\u180E");
diff --git a/test/language/literals/regexp/mongolian-vowel-separator-eval.js b/test/language/literals/regexp/mongolian-vowel-separator-eval.js
new file mode 100644
index 0000000000..119336373f
--- /dev/null
+++ b/test/language/literals/regexp/mongolian-vowel-separator-eval.js
@@ -0,0 +1,21 @@
+// Copyright (C) 2016 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-unicode-format-control-characters
+description: >
+  Mongolian Vowel Separator can appear in regular expression literals (eval code).
+info: >
+  11.1 Unicode Format-Control Characters
+
+  The Unicode format-control characters (i.e., the characters in category “Cf”
+  in the Unicode Character Database such as LEFT-TO-RIGHT MARK or RIGHT-TO-LEFT
+  MARK) are control codes used to control the formatting of a range of text in
+  the absence of higher-level protocols for this (such as mark-up languages).
+
+  It is useful to allow format-control characters in source text to facilitate
+  editing and display. All format control characters may be used within comments,
+  and within string literals, template literals, and regular expression literals.
+---*/
+
+assert.sameValue(eval("/\u180E/").source, "\u180E");
diff --git a/test/language/literals/regexp/mongolian-vowel-separator.js b/test/language/literals/regexp/mongolian-vowel-separator.js
new file mode 100644
index 0000000000..d7871f8ffe
--- /dev/null
+++ b/test/language/literals/regexp/mongolian-vowel-separator.js
@@ -0,0 +1,22 @@
+// Copyright (C) 2016 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-unicode-format-control-characters
+description: >
+  Mongolian Vowel Separator can appear in regular expression literals.
+info: >
+  11.1 Unicode Format-Control Characters
+
+  The Unicode format-control characters (i.e., the characters in category “Cf”
+  in the Unicode Character Database such as LEFT-TO-RIGHT MARK or RIGHT-TO-LEFT
+  MARK) are control codes used to control the formatting of a range of text in
+  the absence of higher-level protocols for this (such as mark-up languages).
+
+  It is useful to allow format-control characters in source text to facilitate
+  editing and display. All format control characters may be used within comments,
+  and within string literals, template literals, and regular expression literals.
+---*/
+
+// U+180E in regular expressions; UTF8(0x180E) = 0xE1 0xA0 0x8E
+assert.sameValue(/á Ž/.source, "\u180E");
diff --git a/test/language/literals/string/mongolian-vowel-separator-eval.js b/test/language/literals/string/mongolian-vowel-separator-eval.js
new file mode 100644
index 0000000000..e776bb24ad
--- /dev/null
+++ b/test/language/literals/string/mongolian-vowel-separator-eval.js
@@ -0,0 +1,21 @@
+// Copyright (C) 2016 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-unicode-format-control-characters
+description: >
+  Mongolian Vowel Separator can appear in string literals (eval code).
+info: >
+  11.1 Unicode Format-Control Characters
+
+  The Unicode format-control characters (i.e., the characters in category “Cf”
+  in the Unicode Character Database such as LEFT-TO-RIGHT MARK or RIGHT-TO-LEFT
+  MARK) are control codes used to control the formatting of a range of text in
+  the absence of higher-level protocols for this (such as mark-up languages).
+
+  It is useful to allow format-control characters in source text to facilitate
+  editing and display. All format control characters may be used within comments,
+  and within string literals, template literals, and regular expression literals.
+---*/
+
+assert.sameValue(eval("'\u180E'"), "\u180E");
diff --git a/test/language/literals/string/mongolian-vowel-separator.js b/test/language/literals/string/mongolian-vowel-separator.js
new file mode 100644
index 0000000000..d00de839a9
--- /dev/null
+++ b/test/language/literals/string/mongolian-vowel-separator.js
@@ -0,0 +1,22 @@
+// Copyright (C) 2016 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-unicode-format-control-characters
+description: >
+  Mongolian Vowel Separator can appear in string literals.
+info: >
+  11.1 Unicode Format-Control Characters
+
+  The Unicode format-control characters (i.e., the characters in category “Cf”
+  in the Unicode Character Database such as LEFT-TO-RIGHT MARK or RIGHT-TO-LEFT
+  MARK) are control codes used to control the formatting of a range of text in
+  the absence of higher-level protocols for this (such as mark-up languages).
+
+  It is useful to allow format-control characters in source text to facilitate
+  editing and display. All format control characters may be used within comments,
+  and within string literals, template literals, and regular expression literals.
+---*/
+
+// U+180E in strings; UTF8(0x180E) = 0xE1 0xA0 0x8E
+assert.sameValue("á Ž", "\u180E");
diff --git a/test/language/white-space/mongolian-vowel-separator-eval.js b/test/language/white-space/mongolian-vowel-separator-eval.js
new file mode 100644
index 0000000000..4fc23d7c83
--- /dev/null
+++ b/test/language/white-space/mongolian-vowel-separator-eval.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2016 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-white-space
+description: >
+  Mongolian Vowel Separator is not recognized as white space (eval code).
+info: >
+  11.2 White Space
+
+  WhiteSpace ::
+    <TAB>
+    <VT>
+    <FF>
+    <SP>
+    <NBSP>
+    <ZWNBSP>
+    <USP>
+  <USP> ::
+    Other category “Zs” code points
+
+  General Category of U+180E is “Cf” (Format).
+---*/
+
+// U+180E between "var" and "foo".
+assert.throws(SyntaxError, function() {
+  eval("var\u180Efoo;");
+});
diff --git a/test/language/white-space/mongolian-vowel-separator.js b/test/language/white-space/mongolian-vowel-separator.js
new file mode 100644
index 0000000000..1229707a9e
--- /dev/null
+++ b/test/language/white-space/mongolian-vowel-separator.js
@@ -0,0 +1,27 @@
+// Copyright (C) 2016 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-white-space
+description: >
+  Mongolian Vowel Separator is not recognized as white space.
+info: >
+  11.2 White Space
+
+  WhiteSpace ::
+    <TAB>
+    <VT>
+    <FF>
+    <SP>
+    <NBSP>
+    <ZWNBSP>
+    <USP>
+  <USP> ::
+    Other category “Zs” code points
+
+  General Category of U+180E is “Cf” (Format).
+negative: SyntaxError
+---*/
+
+// U+180E between "var" and "foo"; UTF8(0x180E) = 0xE1 0xA0 0x8E
+vará Žfoo;
-- 
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