default_for_option

# File railties/lib/rails/generators/base.rb, line 351
        def self.default_for_option(config, name, options, default) # :doc:
          if generator_name && (c = config[generator_name.to_sym]) && c.key?(name)
            c[name]
          elsif base_name && (c = config[base_name.to_sym]) && c.key?(name)
            c[name]
          elsif config[:rails].key?(name)
            config[:rails][name]
          else
            default
          end
        end