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diff --git a/v8/test/mjsunit/char-escape.js b/v8/test/mjsunit/char-escape.js
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+// Copyright 2008 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+//       notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+//       copyright notice, this list of conditions and the following
+//       disclaimer in the documentation and/or other materials provided
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Check that character escapes are understood as one char
+var escapes = ["\b", "\t", "\n", "\v", "\f", "\r", "\"", "\'", "\\", "\x4a", "\u005f"];
+for (var i = 0; i < escapes.length; i++) {
+  var str = escapes[i];
+  assertEquals(1, str.length);
+  assertEquals(str, str.charAt(0));
+}
+
+function code(str) {
+  return str.charCodeAt(0);
+}
+
+// Do the single escape chars have the right value?
+assertEquals(0x08, code("\b"));
+assertEquals(0x09, code("\t"));
+assertEquals(0x0A, code("\n"));
+assertEquals(0x0B, code("\v"));
+assertEquals(0x0C, code("\f"));
+assertEquals(0x0D, code("\r"));
+assertEquals(0x22, code("\""));
+assertEquals(0x27, code("\'"));
+assertEquals(0x5c, code("\\"));
+
+// Do the hex and unicode escape chars have the right value?
+assertEquals(0x4a, code("\x4a"));
+assertEquals(0x5f, code("\u005f"));