# File lib/hiera/backend/eyaml/subcommand.rb, line 50
        def self.all_options 
          options = @@global_options.dup
          options += self.options if self.options
          options += Plugins.options
          # merge in defaults from configuration files
          config_file = self.load_config_file
          options.map!{ | opt| 
            key_name = "#{opt[:name]}"
            if config_file.has_key? key_name
              opt[:default] = config_file[key_name]
              opt
            else
              opt
            end
          }
          options
        end