Code:
on ^*:text:*:#: {
  haltdef
  echo -a $1-
}
on ^*:text:*:?: {
  haltdef
  echo -a $1-
}
on *:input:*: {
  if ($left($1,1) == $readini(mirc.ini,text,commandchar)) && (!$ctrlenter) { return }
  .msg $target $1- 
  echo -a $1-
}

Wanted to add:

the . infront of msg will stop the message to be shown to you.