include_with_range?

# File activesupport/lib/active_support/core_ext/range/include_range.rb, line 10
        def include_with_range?(value)
          if value.is_a?(::Range)
            operator = exclude_end? ? :< : :<=
            end_value = value.exclude_end? ? last.succ : last
            include?(value.first) && (value.last <=> end_value).send(operator, 0)
          else
            include_without_range?(value)
          end
        end