anchor.diff:  
               // Add to group as member by default.
               try {
  -                boolean added = false;
  +                boolean added;
                   if (username.indexOf('@') == -1) {
                       // No @ was found so assume this is a JID of a local user
                       username = Stringprep.nodeprep(username);
  
positive.code:     String [] deleteMembers = ParamUtils.getParameters(request, "delete");
      String groupName = ParamUtils.getParameter(request, "group");
      GroupManager groupManager = webManager.getGroupManager();
      boolean edit = ParamUtils.getBooleanParameter(request, "edit", false);
      String newName = ParamUtils.getParameter(request, "newName");
      String newDescription = ParamUtils.getParameter(request, "newDescription");
      boolean groupInfoChanged = ParamUtils.getBooleanParameter(request, "groupChanged", false);
  
      Map<String,String> errors = new HashMap<String,String>();
  
negative.code: <%  // Get parameters
      boolean add = request.getParameter("add") != null;
      boolean delete = request.getParameter("remove") != null;
      boolean updateMember = request.getParameter("updateMember") != null;
      boolean update = request.getParameter("save") != null;
      boolean cancel = request.getParameter("cancel") != null;
      String users = ParamUtils.getParameter(request, "users");
  