docs: def sf(f, dirpath, jottapath):
      """Create and return a SyncFile tuple from filename.
  
              localpath will be a byte string with utf8 code points
              jottapath will be a unicode string"""
      log.debug('Create SyncFile from %s', repr(f))
      log.debug('Got encoded filename %r, joining with dirpath %r', _encode_filename_to_filesystem(f), dirpath)
      return SyncFile(localpath=os.path.join(dirpath, _encode_filename_to_filesystem(f)),
                    jottapath=posixpath.join(_decode_filename_to_unicode(jottapath), _decode_filename_to_unicode(f)))