diff --git a/lodash.js b/lodash.js
index fadbc428b..7481a8229 100644
--- a/lodash.js
+++ b/lodash.js
@@ -80,7 +80,7 @@
   var reHostCtor = /^\[object .+?Constructor\]$/;
 
   /** Used to match latin-1 supplement letters (excluding mathematical operators) */
-  var reLatin1 = /[\xC0-\xD6\xD8-\xDE\xDF-\xF6\xF8-\xFF]/g;
+  var reLatin1 = /[\xc0-\xd6\xd8-\xde\xdf-\xf6\xf8-\xff]/g;
 
   /** Used to ensure capturing order of template delimiters */
   var reNoMatch = /($^)/;
@@ -100,8 +100,8 @@
 
   /** Used to match words to create compound words */
   var reWords = (function() {
-    var upper = '[A-Z\\xC0-\\xD6\\xD8-\\xDE]',
-        lower = '[a-z\\xDF-\\xF6\\xF8-\\xFF]+';
+    var upper = '[A-Z\\xc0-\\xd6\\xd8-\\xde]',
+        lower = '[a-z\\xdf-\\xf6\\xf8-\\xff]+';
 
     return RegExp(upper + '{2,}(?=' + upper + lower + ')|' + upper + '?' + lower + '|' + upper + '+|[0-9]+', 'g');
   }());
@@ -109,13 +109,13 @@
   /** Used to detect and test whitespace */
   var whitespace = (
     // whitespace
-    ' \t\x0B\f\xA0\ufeff' +
+    ' \t\x0b\f\xa0\ufeff' +
 
     // line terminators
     '\n\r\u2028\u2029' +
 
     // unicode category "Zs" space separators
-    '\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000'
+    '\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000'
   );
 
   /** Used to assign default `context` object properties */
@@ -202,23 +202,23 @@
 
   /** Used to map latin-1 supplementary letters to basic latin letters */
   var deburredLetters = {
-    '\xC0': 'A',  '\xC1': 'A', '\xC2': 'A', '\xC3': 'A', '\xC4': 'A', '\xC5': 'A',
-    '\xE0': 'a',  '\xE1': 'a', '\xE2': 'a', '\xE3': 'a', '\xE4': 'a', '\xE5': 'a',
-    '\xC7': 'C',  '\xE7': 'c',
-    '\xD0': 'D',  '\xF0': 'd',
-    '\xC8': 'E',  '\xC9': 'E', '\xCA': 'E', '\xCB': 'E',
-    '\xE8': 'e',  '\xE9': 'e', '\xEA': 'e', '\xEB': 'e',
-    '\xCC': 'I',  '\xCD': 'I', '\xCE': 'I', '\xCF': 'I',
-    '\xEC': 'i',  '\xED': 'i', '\xEE': 'i', '\xEF': 'i',
-    '\xD1': 'N',  '\xF1': 'n',
-    '\xD2': 'O',  '\xD3': 'O', '\xD4': 'O', '\xD5': 'O', '\xD6': 'O', '\xD8': 'O',
-    '\xF2': 'o',  '\xF3': 'o', '\xF4': 'o', '\xF5': 'o', '\xF6': 'o', '\xF8': 'o',
-    '\xD9': 'U',  '\xDA': 'U', '\xDB': 'U', '\xDC': 'U',
-    '\xF9': 'u',  '\xFA': 'u', '\xFB': 'u', '\xFC': 'u',
-    '\xDD': 'Y',  '\xFD': 'y', '\xFF': 'y',
-    '\xC6': 'Ae', '\xE6': 'ae',
-    '\xDE': 'Th', '\xFE': 'th',
-    '\xDF': 'ss'
+    '\xc0': 'A',  '\xc1': 'A', '\xc2': 'A', '\xc3': 'A', '\xc4': 'A', '\xc5': 'A',
+    '\xe0': 'a',  '\xe1': 'a', '\xe2': 'a', '\xe3': 'a', '\xe4': 'a', '\xe5': 'a',
+    '\xc7': 'C',  '\xe7': 'c',
+    '\xd0': 'D',  '\xf0': 'd',
+    '\xc8': 'E',  '\xc9': 'E', '\xca': 'E', '\xcb': 'E',
+    '\xe8': 'e',  '\xe9': 'e', '\xea': 'e', '\xeb': 'e',
+    '\xcC': 'I',  '\xcd': 'I', '\xce': 'I', '\xcf': 'I',
+    '\xeC': 'i',  '\xed': 'i', '\xee': 'i', '\xef': 'i',
+    '\xd1': 'N',  '\xf1': 'n',
+    '\xd2': 'O',  '\xd3': 'O', '\xd4': 'O', '\xd5': 'O', '\xd6': 'O', '\xd8': 'O',
+    '\xf2': 'o',  '\xf3': 'o', '\xf4': 'o', '\xf5': 'o', '\xf6': 'o', '\xf8': 'o',
+    '\xd9': 'U',  '\xda': 'U', '\xdb': 'U', '\xdc': 'U',
+    '\xf9': 'u',  '\xfa': 'u', '\xfb': 'u', '\xfc': 'u',
+    '\xdd': 'Y',  '\xfd': 'y', '\xff': 'y',
+    '\xc6': 'Ae', '\xe6': 'ae',
+    '\xde': 'Th', '\xfe': 'th',
+    '\xdf': 'ss'
   };
 
   /**
diff --git a/test/test.js b/test/test.js
index 8d0d068b6..b7febb193 100644
--- a/test/test.js
+++ b/test/test.js
@@ -219,10 +219,10 @@
 
   /** List of latin-1 supplementary letters to basic latin letters */
   var burredLetters = [
-    '\xC0', '\xC1', '\xC2', '\xC3', '\xC4', '\xC5', '\xC6', '\xC7', '\xC8', '\xC9', '\xCA', '\xCB', '\xCC', '\xCD', '\xCE',
-    '\xCF', '\xD0', '\xD1', '\xD2', '\xD3', '\xD4', '\xD5', '\xD6', '\xD8', '\xD9', '\xDA', '\xDB', '\xDC', '\xDD', '\xDE',
-    '\xDF', '\xE0', '\xE1', '\xE2', '\xE3', '\xE4', '\xE5', '\xE6', '\xE7', '\xE8', '\xE9', '\xEA', '\xEB', '\xEC', '\xED', '\xEE',
-    '\xEF', '\xF0', '\xF1', '\xF2', '\xF3', '\xF4', '\xF5', '\xF6', '\xF8', '\xF9', '\xFA', '\xFB', '\xFC', '\xFD', '\xFE', '\xFF'
+    '\xc0', '\xc1', '\xc2', '\xc3', '\xc4', '\xc5', '\xc6', '\xc7', '\xc8', '\xc9', '\xca', '\xcb', '\xcc', '\xcd', '\xce',
+    '\xcf', '\xd0', '\xd1', '\xd2', '\xd3', '\xd4', '\xd5', '\xd6', '\xd8', '\xd9', '\xda', '\xdb', '\xdc', '\xdd', '\xde',
+    '\xdf', '\xe0', '\xe1', '\xe2', '\xe3', '\xe4', '\xe5', '\xe6', '\xe7', '\xe8', '\xe9', '\xea', '\xeb', '\xec', '\xed', '\xee',
+    '\xef', '\xf0', '\xf1', '\xf2', '\xf3', '\xf4', '\xf5', '\xf6', '\xf8', '\xf9', '\xfa', '\xfb', '\xfc', '\xfd', '\xfe', '\xff'
   ];
 
   /** List of `burredLetters` translated to basic latin letters */
@@ -281,7 +281,7 @@
    * Used to check for problems removing whitespace. For a whitespace reference
    * see V8's unit test https://code.google.com/p/v8/source/browse/branches/bleeding_edge/test/mjsunit/whitespaces.js.
    */
-  var whitespace = ' \t\x0B\f\xA0\ufeff\n\r\u2028\u2029\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000';
+  var whitespace = ' \t\x0b\f\xa0\ufeff\n\r\u2028\u2029\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000';
 
   /**
    * Extracts the unwrapped value from its wrapper.
@@ -1429,7 +1429,7 @@
     });
 
     test('should trim latin-1 mathematical operators', 1, function() {
-      var actual = _.map(['\xD7', '\xF7'], func);
+      var actual = _.map(['\xd7', '\xf7'], func);
       deepEqual(actual, ['', '']);
     });
 
@@ -2948,7 +2948,7 @@
     });
 
     test('should not deburr latin-1 mathematical operators', 1, function() {
-      var operators = ['\xD7', '\xF7'],
+      var operators = ['\xd7', '\xf7'],
           actual = _.map(operators, _.deburr);
 
       deepEqual(actual, operators);
@@ -12492,7 +12492,7 @@
     });
 
     test('should not treat mathematical operators as words', 1, function() {
-      var operators = ['\xD7', '\xF7'],
+      var operators = ['\xd7', '\xf7'],
           expected = _.map(operators, _.constant([])),
           actual = _.map(operators, _.words);