code: def apply_job_security(code):
      
      buf = io.BytesIO(code.encode('utf8'))
      tokens = tokenize.tokenize(buf.readline)
      # NOTE: by setting the fullname to `mercurial.pycompat` below, we're
      # ensuring that hg-specific pycompat imports aren't inserted to the code.
      data = tokenize.untokenize(replacetokens(list(tokens), 'mercurial.pycompat'))
      return cast(str, data.decode('utf8'))
docs: Treat input `code` like Python 2 (implicit strings are byte literals).
  
      The implementation is horribly inefficient but the goal is to be compatible
      with what Mercurial does at runtime.