[luatex] nodes

[Herbert Voss]

Am 16.12.2012 01:53, schrieb Paul Isambert:

> You have to reassign the first return value of node.insert_before to the
> head of the list, otherwise when the hbox is analyzed by TeX it still
> sees the original head as the first node. A much simpler version of your
> function would be:

Yes, that's true.

thanks
Herbert


>
>      function markList(List)
>        for n in node.traverse(List) do
>          if n.id == 1 then
>            markList(List.head)
>          elseif n.id == 0 then
>            local w = node.new("whatsit","pdf_literal")
>            w.data = string.format("q 1 0 0 RG 1 w 0 -0.1 m 0 10 l S Q")
>            n.head = node.insert_before(n.head, n.head, w)
>          end
>        end
>        return true
>      end
>
> Best,
> Paul
>
>