capture (ActionView::Helpers::CaptureHelper)

    # File lib/action_view/helpers/capture_helper.rb, line 33
          def capture(*args, &block)
            # execute the block
            begin
              buffer = eval(ActionView::Base.erb_variable, block.binding)
            rescue
              buffer = nil
            end

            if buffer.nil?
              capture_block(*args, &block).to_s
            else
              capture_erb_with_buffer(buffer, *args, &block).to_s
            end
          end