docs: protected File[] listRepositoryChoices() {
          // check current location
          String currentDir = System.getProperty("log.repository.root");
          if (currentDir == null)
              currentDir = System.getProperty("user.dir");
          File logDir = new File(currentDir);
          if (logDir.isDirectory()) {
              File[] result = RepositoryReaderImpl.listRepositories(logDir);
              if (result.length == 0 && (RepositoryReaderImpl.containsLogFiles(logDir) || tailInterval > 0)) {
                  return new File[] { logDir };
              } else {
                  return result;
              }
          } else {
              return new File[] {};
          }
      }