title: How to make my discord bot respond to *both* custom prefixes and mentions?
body: <p>I have a function that retrieves a custom prefix from a database file, but I would like to implement the ability to <em>also</em> respond to mentions, as in the <code>when_mentioned()</code> function. However, I can not pass in both functions to the <code>command_prefix</code> parameter when I am initializing my bot. Is there any way I could go about doing this? I've been searching for answers for the last hour and have found nothing that works yet.</p>