Moves all 'new' files into cur, correctly flagging

def _muaprocessnew(self):
        """Moves all 'new' files into cur, correctly flagging"""
        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)