load_and_instantiate

# File lib/rubygems/command_manager.rb, line 197
  def load_and_instantiate(command_name)
    command_name = command_name.to_s
    const_name = command_name.capitalize.gsub(/_(.)/) { $1.upcase } << "Command"
    load_error = nil

    begin
      begin
        require "rubygems/commands/#{command_name}_command"
      rescue LoadError => e
        load_error = e
      end
      Gem::Commands.const_get(const_name).new
    rescue Exception => e
      e = load_error if load_error

      alert_error "Loading command: #{command_name} (#{e.class})\n\t#{e}"
      ui.backtrace e
    end
  end