class Rails::Command::Base

def banner(command = nil, *)
  if command
    # Similar to Thor's banner, but show the namespace (minus the
    # "rails:" prefix), and show the command's declared bin instead of
    # the command runner.
    command.formatted_usage(self).gsub(/^#{namespace}:(\w+)/) { executable($1) }
  else
    executable
  end
end