code: def _muaprocessnew(self):
          
          foldername = self._foldername("new")
          files = self.filesystem.listdir(foldername)
          for filename in files:
              if filename == "":
                  continue
              curfilename = self._foldername(joinpath("new", filename))
              newfilename = joinpath(
                  self._cur,
                  "%s:2,%s" % (filename, "")
                  )
              self.filesystem.rename(curfilename, newfilename)
docs: Moves all 'new' files into cur, correctly flagging