# File lib/haml/helpers/action_view_mods.rb, line 223
        def form_for_with_haml(object_name, *args, &proc)
          wrap_block = block_given? && is_haml? && block_is_haml?(proc)
          if wrap_block
            oldproc = proc
            proc = haml_bind_proc do |*args|
              tab_up
              oldproc.call(*args)
              tab_down
              concat haml_indent
            end
            concat haml_indent
          end
          form_for_without_haml(object_name, *args, &proc)
          concat "\n" if wrap_block
          Haml::Helpers::ErrorReturn.new("form_for") if is_haml?
        end