code: function(body , retVal){
  			if( body ){
  				var number =  parseInt(body, 10);
  				retVal.push( number >= 0 ? number : 1);
  			} else {
  				retVal.push(1);
  			}
  		}
docs: In many versions of GNU diff, each range can omit the comma and trailing value s, in which case s defaults to 1.