on *:RAWMODE:#isbil: { 
  if *e* iswm $1- { 
    .//mode $chan $replace($1-,+,-)  
  }
}
on *:RAWMODE:#isbil: { 
  if *I* iswm $1- { 
    .//mode $chan $replace($1-,+,-)  
  }
}

ELLER:

on *:RAWMODE:#isbil: { 
  if *e* || *I* iswm $1- { 
    .//mode $chan $replace($1-,+,-)  
  }
}