# File lib/ruote/exp/flowexpression.rb, line 476
    def lookup_on_error

      if h.on_error

        self

      elsif h.parent_id

        par = parent
          # :( get_parent would probably be a better name for #parent

        unless par
          puts "~~"
          puts "parent gone for"
          p h.fei
          p h.parent_id
          p tree
          puts "~~"
        end

        par ? par.lookup_on_error : nil

      else

        nil
      end
    end