class Rails::Rack::Debugger

def initialize(app)
  @app = app
  ARGV.clear # clear ARGV so that rails server options aren't passed to IRB
  require_library_or_gem 'ruby-debug'
  ::Debugger.start
  ::Debugger.settings[:autoeval] = true if ::Debugger.respond_to?(:settings)
  puts "=> Debugger enabled"
rescue Exception
  puts "You need to install ruby-debug to run the server in debugging mode. With gems, use 'gem install ruby-debug'"
  exit
end