#underscore method does not add the _ prefix for words starting with a upper case

Author: az7arul

lib/string.js

@@ -567,9 +567,6 @@ string.js - Copyright (C) 2012-2014, JP Richardson <[email protected]>
     //#modified from https://github.com/epeli/underscore.string
     underscore: function() {
       var s = this.trim().s.replace(/([a-z\d])([A-Z]+)/g, '$1_$2').replace(/[-\s]+/g, '_').toLowerCase();
-      if ((new S(this.s.charAt(0))).isUpper()) {
-        s = '_' + s;
-      }
       return new this.constructor(s);
     },
 

test/string.test.js

@@ -676,7 +676,9 @@
     describe('- underscore()', function() {
       it('should convert a camel cased string into a string separated by underscores', function() {
         T (S('dataRate').underscore().s === 'data_rate');
-        T (S('CarSpeed').underscore().s === '_car_speed');
+        T (S('CarSpeed').underscore().s === 'car_speed');
+        F (S('CarSpeed').underscore().s === '_car_speed');
+        T (S('_CarSpeed').underscore().s === '_car_speed');
         T (S('yesWeCan').underscore().s === 'yes_we_can');
       })
     })