call me is easily identified by using if (call me iswm $1-) or if ($1-$2 == call me)
Just a note, you don't need the second $... if ($1-2 == call me) is fine. Not a problem, obviously... just commenting.
And it does sound like he's typing "test" with both nicks instead of "test" with nick1 and "hello" with nick2.
