Program: 56553
Project: 56553
Buggy source:
private void initDefaultAuxHandlers(){
  String category=Category.AUXACTION.getName();
  registerHandler(category,AuxAction.CLOSE_BOOK.getAction(),new CloseBookHandler());
  registerHandler(category,AuxAction.ADD_SHEET.getAction(),new AddSheetHandler());
  registerHandler(category,AuxAction.DELETE_SHEET.getAction(),new DeleteSheetHandler());
  registerHandler(category,AuxAction.RENAME_SHEET.getAction(),new RenameSheetHandler());
  registerHandler(category,AuxAction.MOVE_SHEET_LEFT.getAction(),new MoveSheetHandler(true));
  registerHandler(category,AuxAction.MOVE_SHEET_RIGHT.getAction(),new MoveSheetHandler(false));
  registerHandler(category,AuxAction.GRIDLINES.getAction(),new DisplayGridlinesAction());
  registerHandler(category,AuxAction.PASTE.getAction(),new PasteHandler());
  registerHandler(category,AuxAction.CUT.getAction(),new CutHandler());
  registerHandler(category,AuxAction.COPY.getAction(),new CopyHandler());
  registerHandler(category,AuxAction.FONT_FAMILY.getAction(),new FontFamilyHandler());
  registerHandler(category,AuxAction.FONT_SIZE.getAction(),new FontSizeHandler());
  registerHandler(category,AuxAction.FONT_BOLD.getAction(),new FontBoldHandler());
  registerHandler(category,AuxAction.FONT_ITALIC.getAction(),new FontItalicHandler());
  registerHandler(category,AuxAction.FONT_UNDERLINE.getAction(),new FontUnderlineHandler());
  registerHandler(category,AuxAction.FONT_STRIKE.getAction(),new FontStrikeoutHandler());
  registerHandler(category,AuxAction.BORDER.getAction(),new ApplyBorderHandler(ApplyBorderType.EDGE_BOTTOM,BorderType.THIN));
  registerHandler(category,AuxAction.BORDER_BOTTOM.getAction(),new ApplyBorderHandler(ApplyBorderType.EDGE_BOTTOM,BorderType.THIN));
  registerHandler(category,AuxAction.BORDER_TOP.getAction(),new ApplyBorderHandler(ApplyBorderType.EDGE_TOP,BorderType.THIN));
  registerHandler(category,AuxAction.BORDER_LEFT.getAction(),new ApplyBorderHandler(ApplyBorderType.EDGE_LEFT,BorderType.THIN));
  registerHandler(category,AuxAction.BORDER_RIGHT.getAction(),new ApplyBorderHandler(ApplyBorderType.EDGE_RIGHT,BorderType.THIN));
  registerHandler(category,AuxAction.BORDER_NO.getAction(),new ApplyBorderHandler(ApplyBorderType.FULL,BorderType.THIN));
  registerHandler(category,AuxAction.BORDER_ALL.getAction(),new ApplyBorderHandler(ApplyBorderType.FULL,BorderType.THIN));
  registerHandler(category,AuxAction.BORDER_OUTSIDE.getAction(),new ApplyBorderHandler(ApplyBorderType.OUTLINE,BorderType.THIN));
  registerHandler(category,AuxAction.BORDER_INSIDE.getAction(),new ApplyBorderHandler(ApplyBorderType.INSIDE,BorderType.THIN));
  registerHandler(category,AuxAction.BORDER_INSIDE_HORIZONTAL.getAction(),new ApplyBorderHandler(ApplyBorderType.INSIDE_HORIZONTAL,BorderType.THIN));
  registerHandler(category,AuxAction.BORDER_INSIDE_VERTICAL.getAction(),new ApplyBorderHandler(ApplyBorderType.INSIDE_VERTICAL,BorderType.THIN));
  registerHandler(category,AuxAction.FONT_COLOR.getAction(),new FontColorHandler());
  registerHandler(category,AuxAction.FILL_COLOR.getAction(),new FillColorHandler());
  registerHandler(category,AuxAction.VERTICAL_ALIGN_TOP.getAction(),new VerticalAlignHandler(VerticalAlignment.TOP));
  registerHandler(category,AuxAction.VERTICAL_ALIGN_MIDDLE.getAction(),new VerticalAlignHandler(VerticalAlignment.CENTER));
  registerHandler(category,AuxAction.VERTICAL_ALIGN_BOTTOM.getAction(),new VerticalAlignHandler(VerticalAlignment.BOTTOM));
  registerHandler(category,AuxAction.HORIZONTAL_ALIGN_LEFT.getAction(),new HorizontalAlignHandler(Alignment.LEFT));
  registerHandler(category,AuxAction.HORIZONTAL_ALIGN_CENTER.getAction(),new HorizontalAlignHandler(Alignment.CENTER));
  registerHandler(category,AuxAction.HORIZONTAL_ALIGN_RIGHT.getAction(),new HorizontalAlignHandler(Alignment.RIGHT));
  registerHandler(category,AuxAction.WRAP_TEXT.getAction(),new WrapTextHandler());
  registerHandler(category,AuxAction.INSERT_SHIFT_CELL_RIGHT.getAction(),new InsertCellRightHandler());
  registerHandler(category,AuxAction.INSERT_SHIFT_CELL_DOWN.getAction(),new InsertCellDownHandler());
  registerHandler(category,AuxAction.INSERT_SHEET_ROW.getAction(),new InsertRowHandler());
  registerHandler(category,AuxAction.INSERT_SHEET_COLUMN.getAction(),new InsertColumnHandler());
  registerHandler(category,AuxAction.DELETE_SHIFT_CELL_LEFT.getAction(),new DeleteCellLeftHandler());
  registerHandler(category,AuxAction.DELETE_SHIFT_CELL_UP.getAction(),new DeleteCellUpHandler());
  registerHandler(category,AuxAction.DELETE_SHEET_ROW.getAction(),new DeleteRowHandler());
  registerHandler(category,AuxAction.DELETE_SHEET_COLUMN.getAction(),new DeleteColumnHandler());
  registerHandler(category,AuxAction.SORT_ASCENDING.getAction(),new SortHandler(false));
  registerHandler(category,AuxAction.SORT_DESCENDING.getAction(),new SortHandler(true));
  registerHandler(category,AuxAction.CLEAR_CONTENT.getAction(),new ClearCellHandler(ClearCellAction.Type.CONTENT));
  registerHandler(category,AuxAction.CLEAR_STYLE.getAction(),new ClearCellHandler(ClearCellAction.Type.STYLE));
  registerHandler(category,AuxAction.CLEAR_ALL.getAction(),new ClearCellHandler(ClearCellAction.Type.ALL));
  registerHandler(category,AuxAction.HIDE_COLUMN.getAction(),new HideHeaderHandler(HideHeaderAction.Type.COLUMN,true));
  registerHandler(category,AuxAction.UNHIDE_COLUMN.getAction(),new HideHeaderHandler(HideHeaderAction.Type.COLUMN,false));
  registerHandler(category,AuxAction.HIDE_ROW.getAction(),new HideHeaderHandler(HideHeaderAction.Type.ROW,true));
  registerHandler(category,AuxAction.UNHIDE_ROW.getAction(),new HideHeaderHandler(HideHeaderAction.Type.ROW,false));
  UserActionHandler folderhandler=new AbstractProtectedHandler(){
    @Override protected boolean processAction(    UserActionContext ctx){
      return false;
    }
  }
;
  registerHandler(category,AuxAction.VERTICAL_ALIGN.getAction(),folderhandler);
  registerHandler(category,AuxAction.HORIZONTAL_ALIGN.getAction(),folderhandler);
  registerHandler(category,AuxAction.INSERT.getAction(),folderhandler);
  registerHandler(category,AuxAction.DELETE.getAction(),folderhandler);
  registerHandler(category,AuxAction.SORT_AND_FILTER.getAction(),folderhandler);
  registerHandler(category,AuxAction.CLEAR.getAction(),folderhandler);
  category=Category.KEYSTROKE.getName();
  registerHandler(category,"String_Node_Str",new AbstractBookHandler(){
    @Override protected boolean processAction(    UserActionContext ctx){
      doUndo();
      return true;
    }
  }
);
  registerHandler(category,"String_Node_Str",new AbstractBookHandler(){
    @Override protected boolean processAction(    UserActionContext ctx){
      doRedo();
      return true;
    }
  }
);
  registerHandler(category,"String_Node_Str",new CutHandler());
  registerHandler(category,"String_Node_Str",new CopyHandler());
  registerHandler(category,"String_Node_Str",new PasteHandler());
  registerHandler(category,"String_Node_Str",new FontBoldHandler());
  registerHandler(category,"String_Node_Str",new FontItalicHandler());
  registerHandler(category,"String_Node_Str",new ClearCellHandler(ClearCellAction.Type.CONTENT));
  category=Category.EVENT.getName();
}

Fixed version (ground truth):
private void initDefaultAuxHandlers(){
  String category=Category.AUXACTION.getName();
  registerHandler(category,AuxAction.CLOSE_BOOK.getAction(),new CloseBookHandler());
  registerHandler(category,AuxAction.ADD_SHEET.getAction(),new AddSheetHandler());
  registerHandler(category,AuxAction.DELETE_SHEET.getAction(),new DeleteSheetHandler());
  registerHandler(category,AuxAction.RENAME_SHEET.getAction(),new RenameSheetHandler());
  registerHandler(category,AuxAction.MOVE_SHEET_LEFT.getAction(),new MoveSheetHandler(true));
  registerHandler(category,AuxAction.MOVE_SHEET_RIGHT.getAction(),new MoveSheetHandler(false));
  registerHandler(category,AuxAction.GRIDLINES.getAction(),new DisplayGridlinesAction());
  registerHandler(category,AuxAction.PASTE.getAction(),new PasteHandler());
  registerHandler(category,AuxAction.CUT.getAction(),new CutHandler());
  registerHandler(category,AuxAction.COPY.getAction(),new CopyHandler());
  registerHandler(category,AuxAction.FONT_FAMILY.getAction(),new FontFamilyHandler());
  registerHandler(category,AuxAction.FONT_SIZE.getAction(),new FontSizeHandler());
  registerHandler(category,AuxAction.FONT_BOLD.getAction(),new FontBoldHandler());
  registerHandler(category,AuxAction.FONT_ITALIC.getAction(),new FontItalicHandler());
  registerHandler(category,AuxAction.FONT_UNDERLINE.getAction(),new FontUnderlineHandler());
  registerHandler(category,AuxAction.FONT_STRIKE.getAction(),new FontStrikeoutHandler());
  registerHandler(category,AuxAction.BORDER.getAction(),new ApplyBorderHandler(ApplyBorderType.EDGE_BOTTOM,BorderType.THIN));
  registerHandler(category,AuxAction.BORDER_BOTTOM.getAction(),new ApplyBorderHandler(ApplyBorderType.EDGE_BOTTOM,BorderType.THIN));
  registerHandler(category,AuxAction.BORDER_TOP.getAction(),new ApplyBorderHandler(ApplyBorderType.EDGE_TOP,BorderType.THIN));
  registerHandler(category,AuxAction.BORDER_LEFT.getAction(),new ApplyBorderHandler(ApplyBorderType.EDGE_LEFT,BorderType.THIN));
  registerHandler(category,AuxAction.BORDER_RIGHT.getAction(),new ApplyBorderHandler(ApplyBorderType.EDGE_RIGHT,BorderType.THIN));
  registerHandler(category,AuxAction.BORDER_NO.getAction(),new ApplyBorderHandler(ApplyBorderType.FULL,BorderType.NONE));
  registerHandler(category,AuxAction.BORDER_ALL.getAction(),new ApplyBorderHandler(ApplyBorderType.FULL,BorderType.THIN));
  registerHandler(category,AuxAction.BORDER_OUTSIDE.getAction(),new ApplyBorderHandler(ApplyBorderType.OUTLINE,BorderType.THIN));
  registerHandler(category,AuxAction.BORDER_INSIDE.getAction(),new ApplyBorderHandler(ApplyBorderType.INSIDE,BorderType.THIN));
  registerHandler(category,AuxAction.BORDER_INSIDE_HORIZONTAL.getAction(),new ApplyBorderHandler(ApplyBorderType.INSIDE_HORIZONTAL,BorderType.THIN));
  registerHandler(category,AuxAction.BORDER_INSIDE_VERTICAL.getAction(),new ApplyBorderHandler(ApplyBorderType.INSIDE_VERTICAL,BorderType.THIN));
  registerHandler(category,AuxAction.FONT_COLOR.getAction(),new FontColorHandler());
  registerHandler(category,AuxAction.FILL_COLOR.getAction(),new FillColorHandler());
  registerHandler(category,AuxAction.VERTICAL_ALIGN_TOP.getAction(),new VerticalAlignHandler(VerticalAlignment.TOP));
  registerHandler(category,AuxAction.VERTICAL_ALIGN_MIDDLE.getAction(),new VerticalAlignHandler(VerticalAlignment.CENTER));
  registerHandler(category,AuxAction.VERTICAL_ALIGN_BOTTOM.getAction(),new VerticalAlignHandler(VerticalAlignment.BOTTOM));
  registerHandler(category,AuxAction.HORIZONTAL_ALIGN_LEFT.getAction(),new HorizontalAlignHandler(Alignment.LEFT));
  registerHandler(category,AuxAction.HORIZONTAL_ALIGN_CENTER.getAction(),new HorizontalAlignHandler(Alignment.CENTER));
  registerHandler(category,AuxAction.HORIZONTAL_ALIGN_RIGHT.getAction(),new HorizontalAlignHandler(Alignment.RIGHT));
  registerHandler(category,AuxAction.WRAP_TEXT.getAction(),new WrapTextHandler());
  registerHandler(category,AuxAction.INSERT_SHIFT_CELL_RIGHT.getAction(),new InsertCellRightHandler());
  registerHandler(category,AuxAction.INSERT_SHIFT_CELL_DOWN.getAction(),new InsertCellDownHandler());
  registerHandler(category,AuxAction.INSERT_SHEET_ROW.getAction(),new InsertRowHandler());
  registerHandler(category,AuxAction.INSERT_SHEET_COLUMN.getAction(),new InsertColumnHandler());
  registerHandler(category,AuxAction.DELETE_SHIFT_CELL_LEFT.getAction(),new DeleteCellLeftHandler());
  registerHandler(category,AuxAction.DELETE_SHIFT_CELL_UP.getAction(),new DeleteCellUpHandler());
  registerHandler(category,AuxAction.DELETE_SHEET_ROW.getAction(),new DeleteRowHandler());
  registerHandler(category,AuxAction.DELETE_SHEET_COLUMN.getAction(),new DeleteColumnHandler());
  registerHandler(category,AuxAction.SORT_ASCENDING.getAction(),new SortHandler(false));
  registerHandler(category,AuxAction.SORT_DESCENDING.getAction(),new SortHandler(true));
  registerHandler(category,AuxAction.CLEAR_CONTENT.getAction(),new ClearCellHandler(ClearCellAction.Type.CONTENT));
  registerHandler(category,AuxAction.CLEAR_STYLE.getAction(),new ClearCellHandler(ClearCellAction.Type.STYLE));
  registerHandler(category,AuxAction.CLEAR_ALL.getAction(),new ClearCellHandler(ClearCellAction.Type.ALL));
  registerHandler(category,AuxAction.HIDE_COLUMN.getAction(),new HideHeaderHandler(HideHeaderAction.Type.COLUMN,true));
  registerHandler(category,AuxAction.UNHIDE_COLUMN.getAction(),new HideHeaderHandler(HideHeaderAction.Type.COLUMN,false));
  registerHandler(category,AuxAction.HIDE_ROW.getAction(),new HideHeaderHandler(HideHeaderAction.Type.ROW,true));
  registerHandler(category,AuxAction.UNHIDE_ROW.getAction(),new HideHeaderHandler(HideHeaderAction.Type.ROW,false));
  UserActionHandler folderhandler=new AbstractProtectedHandler(){
    @Override protected boolean processAction(    UserActionContext ctx){
      return false;
    }
  }
;
  registerHandler(category,AuxAction.VERTICAL_ALIGN.getAction(),folderhandler);
  registerHandler(category,AuxAction.HORIZONTAL_ALIGN.getAction(),folderhandler);
  registerHandler(category,AuxAction.INSERT.getAction(),folderhandler);
  registerHandler(category,AuxAction.DELETE.getAction(),folderhandler);
  registerHandler(category,AuxAction.SORT_AND_FILTER.getAction(),folderhandler);
  registerHandler(category,AuxAction.CLEAR.getAction(),folderhandler);
  category=Category.KEYSTROKE.getName();
  registerHandler(category,"String_Node_Str",new AbstractBookHandler(){
    @Override protected boolean processAction(    UserActionContext ctx){
      doUndo();
      return true;
    }
  }
);
  registerHandler(category,"String_Node_Str",new AbstractBookHandler(){
    @Override protected boolean processAction(    UserActionContext ctx){
      doRedo();
      return true;
    }
  }
);
  registerHandler(category,"String_Node_Str",new CutHandler());
  registerHandler(category,"String_Node_Str",new CopyHandler());
  registerHandler(category,"String_Node_Str",new PasteHandler());
  registerHandler(category,"String_Node_Str",new FontBoldHandler());
  registerHandler(category,"String_Node_Str",new FontItalicHandler());
  registerHandler(category,"String_Node_Str",new ClearCellHandler(ClearCellAction.Type.CONTENT));
  category=Category.EVENT.getName();
}