anchor.diff:      else
           RETVAL=0
       fi
  +    [[ $RETVAL = 0 ]] && success || failure
  +    echo
       return $RETVAL
   }
   
  
positive.code:         exit $RETVAL
  esac
  
  if [ $RETVAL == 0 ]; then
      success
  else
      failure
  fi
  
  echo
  exit $RETVAL
  
negative.code:     else
          RETVAL=0
      fi
      [[ $RETVAL = 0 ]] && success || failure
      echo
      return $RETVAL
  }
  
  