function removeComment(str) {
							return str
								.replace(new RegExp('^' + utils.escapeForRegexp(commentStart) + '\\s*'), function (str) {
									caretPos -= str.length;
									return '';
								}).replace(new RegExp('\\s*' + utils.escapeForRegexp(commentEnd) + '$'), '');
						}
Remove comment markers from string
@param {Sting} str
@return {String}