split (ActiveSupport::CoreExtensions::Array::Grouping)

    # File lib/active_support/core_ext/array/grouping.rb, line 47
            def split(value = nil, &block)
              block ||= Proc.new { |e| e == value }

              inject([[]]) do |results, element|
                if block.call(element)
                  results << []
                else
                  results.last << element
                end

                results
              end
            end