Is there a way to run heroku redis-cli with options, like --bigkeys?

Question

I can run heroku redis:cli -a myapp -c myapp, and it works fine.

But when I run heroku redis:cli --bigkeys -a myapp -c myapp, it yields no redis instance found

Answer 1

I discovered I can use local redis-cli with -u:

redis-cli -u `heroku config:get REDIS_URL -a myapp` --bigkeys