Python click 子命令怎么共用父级选项

import logging

import click

DEFAULT_FORMATTER = '%(asctime)s[%(filename)s:%(lineno)d][%(levelname)s]:%(message)s'
logging.basicConfig(format=DEFAULT_FORMATTER, level=logging.INFO)


@click.group(invoke_without_command=True)
@click.option('--limit', type=int, default=5)
@click.option('--chunk-size', type=int, default=5)
@click.option('-vvv', is_flag=True)
@click.option('--debug', envvar='DEBUG', default=False, help='debug mode')
@click.pass_context
def cli(ctx, **kwargs):
    if kwargs.get('debug'):
        logging.basicConfig(format=DEFAULT_FORMATTER, level=logging.DEBUG)

    ctx.obj = kwargs
    if ctx.invoked_subcommand is None:
        ctx.invoke('index')


@cli.command()
@click.option('-a')
@click.pass_context
def index(ctx, **kwargs):
    kwargs.update(ctx.obj)
    print(kwargs)


@cli.command()
@click.option('-b')
@click.pass_context
def test(ctx, **kwargs):
    kwargs.update(ctx.obj)
    print(kwargs)


if __name__ == '__main__':
    cli()
    
    
python3 test.py -vvv test 这样是可以的

python3 test.py test -vvv 

这样提示找不到选项
怎样支持这种命令