docs: def normpath(path):
      """Normalize given path in various different forms.
  
      >>> normpath("/tmp/../etc/hosts")
      '/etc/hosts'
      >>> normpath("~root/t")
      '/root/t'
      """
      funcs = [os.path.normpath, os.path.abspath]
      if "~" in path:
          funcs = [os.path.expanduser] + funcs
  
      return chaincalls(funcs, path)