# File lib/pry/command_set.rb, line 84
    def block_command(name, description="No description.", options={}, &block)
      description, options = ["No description.", description] if description.is_a?(Hash)
      options = default_options(name).merge!(options)

      commands[name] = Pry::BlockCommand.subclass(name, description, options, helper_module, &block)
    end