# File lib/merb-core/rack/adapter/irb.rb, line 85
      def self.start(opts={})
        m = Merb::Rack::Console.new
        m.extend Merb::Test::RequestHelper
        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