code: def list_greps(self, repo, packages):
          
          pkg_list, pkg_size = [], []
          for line in packages.splitlines():
              if repo == "sbo":
                  if line.startswith("SLACKBUILD NAME: "):
                      pkg_list.append(line[17:].strip())
                      pkg_size.append("0 K")
              else:
                  if line.startswith("PACKAGE NAME: "):
                      pkg_list.append(line[15:].strip())
                  if line.startswith("PACKAGE SIZE (compressed): "):
                      pkg_size.append(line[26:].strip())
          if repo == "alien" or repo == "ktown":
              return alien_filter(pkg_list, pkg_size)
          return pkg_list, pkg_size
docs: Grep packages