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