It would be great if you could look for everything with wildcards.
like ltes say there is this dude quitting.
[13:20:03] * Quits: cooldry (cooldry@142-217-4-180.telebecinternet.net) (Read error: EOF from client)
and you know his host is .180.telebecinternet.net you want to use /seen 180.telebecinternet.net
Would rock.