public void enableSrcPosCalculation(){
  calculateSrcPositions=true;
  final int len=sb.length();
  ib=new ArrayList<Integer>(len);
  for (int i=0; i < len; i++)   ib.add(i);
}

public void enableSrcPosCalculation ( ) { calculateSrcPositions = true ; final int len = sb . length ( ) ; ib = new ArrayList < Integer > ( len ) ; for ( int i = 0 ; i < len ; i ++ ) ib . add ( i ) ; }
enables the calculation of src position . the base for these position will be the aktual , not the initial , string wich is uses as base for the spanmanager .
