class RuboCop::Formatter::EmacsStyleFormatter

def message(offense)
  message =
    if offense.corrected_with_todo?
      "[Todo] #{offense.message}"
    elsif offense.corrected?
      "[Corrected] #{offense.message}"
    elsif offense.correctable?
      "[Correctable] #{offense.message}"
    else
      offense.message
    end
  message.tr("\n", ' ')
end