# File lib/rspec/core/configuration.rb, line 8
      def self.add_setting(name, opts={})
        if opts[:alias]
          alias_method name, opts[:alias]
          alias_method "#{name}=", "#{opts[:alias]}="
          alias_method "#{name}?", "#{opts[:alias]}?"
        else
          define_method("#{name}=") {|val| settings[name] = val}
          define_method(name)       { settings.has_key?(name) ? settings[name] : opts[:default] }
          define_method("#{name}?") { send name }
        end
      end