you might try this
Code:
alias opup {
  var %chncnt = $comchan($$1,0)
  var %i = 1
  while (%i < %chncnt) {
    if ($comchan($1,#i).op) { op $comchan($1,%i) $1 }
    INC %i
  }
}


to use: type /opup (nickname)