It's inevitable that if you play in the MySQL source code for long enough you'll eventually stumble into the source for the show authors command and be tempted to do something with it:
mysql> show authors; +---------------------------+------------------------+-----------------------------------+ | Name | Location | Comment | +---------------------------+------------------------+-----------------------------------+ ... | Mike Kruckenberg | Boston, MA, USA | Just one line of code, this one | ... +---------------------------+------------------------+-----------------------------------+