Code:
on ^*:INPUT:#channelname:{
  if ((/* !iswm $1) || (!$ctrlenter)) {
    haltdef
    say 3,9]9,3[1,3]3,1[1,1-1514,01 $+ $1- $+ 1,1-3,1]1,3[9,3]3,9[0,9
  }
}


Change "channelname to # for all channels,? for queries. It will not change the text if you type /message #channelname blah, or if you type it in the editbox but use ctrl+enter instead of just enter.
Just a warning: if you use stuff like this, you will be kicked on a lot of channels, so don't use it unless they specifically ask you for it or something.