Yes, I know there's a script for that. But I think it's useful enough to be inserted into the live chat for everyone.
The following keyboard shortcuts are incredibly useful:
- CTRLUp and CTRLDown - For replying to messages (each Ctrl+Arrow should change the
:[message ID]in the chat input.
- CTRLSpace - For retrying a failed message, or ESC to cancel it. There should also be a keyboard shortcut to edit a failed message as per the newest functionality (Maybe the Down key?)
Using a chat with only the keyboard is very useful, it will be especially appreciated on chats with a more technical nature.