# File lib/merb-core/rack/adapter/irb.rb, line 149
      def self.start(opts={})
        m = Merb::Rack::Console.new
        m.extend Merb::Test::RequestHelper
        m.extend ::Webrat::Methods if defined?(::Webrat)
        Object.send(:define_method, :merb) { m }
        ARGV.clear # Avoid passing args to IRB
        m.open_sandbox! if sandboxed?
        require 'irb'
        require 'irb/completion'
        if File.exists? ".irbrc"
          ENV['IRBRC'] = ".irbrc"
        end
        IRB.start
        at_exit do merb.close_sandbox! if sandboxed? end
        exit
      end