# File lib/i18n/interpolate/ruby.rb, line 20
    def interpolate_hash(string, values)
      string.gsub(INTERPOLATION_PATTERN) do |match|
        if match == '%%'
          '%'
        else
          key = ($1 || $2).to_sym
          value = if values.key?(key)
                    values[key]
                  else
                    config.missing_interpolation_argument_handler.call(key, values, string)
                  end
          value = value.call(values) if value.respond_to?(:call)
          $3 ? sprintf("%#{$3}", value) : value
        end
      end
    end