?meetup follow-me potential cross-message edits

[Aprillion]

Just watching live stream where you created meetups and line 49 in https://github.com/kentcdodds/kcd-discord-bot/blob/7686deebc6aff3155bca8c02ef116ce73fbf20d6/src/commands/command-fns/meetup.js#L49 did not seem to be designed for the following, so here is a potential scenario for msg.content.includes(message.author.id) matching the first message where the author is mentioned:

• given person A mentions person B in their brief description like ?meetup follow-me doing a collab with @B,
• when person B wants to make a new message with ?meetup follow-me I will also stream my own thing,
• the command will (try to) edit the existing message from person A

..it could be even more interesting if followMeChannel.messages.cache iterates from newest to oldest 😂

Let me know if you would worry about this scenario at all. (I can try to investigate more later during the week, if not closed by then)

[Aprillion]

The line also got copied into https://github.com/kentcdodds/kcd-discord-bot/blob/7686deebc6aff3155bca8c02ef116ce73fbf20d6/src/meetup/utils.js#L24

[kentcdodds]

Yeah, we currently act under the assumption that only one user will be mentioned in these messages and it will be the host, but that's not always a great assumption. We should probably regex it out.