swing/text/StringContent.java

408                         posRefs = getPositionsInRange(null, offset, length);
424                     if(posRefs != null) {
425                         updateUndoPositions(posRefs);
426                         posRefs = null;
444         protected Vector posRefs;
459                 posRefs = getPositionsInRange(null, offset, length);
468                     if(posRefs != null) {
469                         updateUndoPositions(posRefs);
470                         posRefs = null;
487                         posRefs = getPositionsInRange(null, offset, length);
503         protected Vector<UndoPosRef> posRefs;