class Servolux::Daemon::LogfileReader

def look_for=( val )
  case val
  when nil;    @look_for = nil
  when String; @look_for = Regexp.new(Regexp.escape(val))
  when Regexp; @look_for = val
  else
    raise Error,
          "Don't know how to look for #{val.inspect} in the logfile"
  end
end