docs: def get_argv_tail(scriptname, prefer_main=None, argv=None):
      r"""
      gets the rest of the arguments after a script has been invoked hack.
      accounts for python -m scripts.
  
      Args:
          scriptname (str):
  
      CommandLine:
          python -m utool.util_arg --test-get_argv_tail
  
      Example:
          >>> # ENABLE_DOCTEST
          >>> from utool.util_arg import *  # NOQA
          >>> import utool as ut
          >>> from os.path import relpath, dirname
          >>> scriptname = 'utool.util_arg'
          >>> prefer_main = False
          >>> argv=['python', '-m', 'utool.util_arg', '--test-get_argv_tail']
          >>> tail = get_argv_tail(scriptname, prefer_main, argv)
          >>> # hack
          >>> tail[0] = ut.ensure_unixslash(relpath(tail[0], dirname(dirname(ut.__file__))))
          >>> result = ut.repr2(tail)
          >>> print(result)
          ['utool/util_arg.py', '--test-get_argv_tail']
  
      Example:
          >>> # ENABLE_DOCTEST
          >>> from utool.util_arg import *  # NOQA
          >>> import utool as ut
          >>> from os.path import relpath, dirname
          >>> scriptname = 'utprof.py'
          >>> prefer_main = True
          >>> argv=['utprof.py', '-m', 'utool', '--tf', 'get_argv_tail']
          >>> tail = get_argv_tail(scriptname, prefer_main, argv)
          >>> # hack
          >>> tail[0] = ut.ensure_unixslash(relpath(tail[0], dirname(dirname(ut.__file__))))
          >>> result = ut.repr2(tail)
          >>> print(result)
          ['utool/__main__.py', '--tf', 'get_argv_tail']
      """
      if argv is None:
          argv = sys.argv
      import utool as ut
      modname = ut.get_argval('-m', help_='specify module name to profile', argv=argv)
      if modname is not None:
          # hack to account for -m scripts
          modpath = ut.get_modpath(modname, prefer_main=prefer_main)
          argvx = argv.index(modname) + 1
          argv_tail = [modpath] + argv[argvx:]
      else:
          try:
              argvx = argv.index(scriptname)
          except ValueError:
              for argvx, arg in enumerate(argv):
                  # HACK
                  if scriptname in arg:
                      break
          argv_tail = argv[(argvx + 1):]
      return argv_tail