bug#4142: [PATCH] 23.1 info.el::Info-goto-node - Wrong type argument: stringp, nil

[Juri Linkov]

> The value of Info-extract-menu-counting isn't checked for nil before
> passing it to Info-goto-node.
>
> 2009-08-14  Jari Aalto  <jari.aalto@cante.net>
>
>         * info.el (Info-nth-menu-item): Check return value
>         of `Info-extract-menu-counting' for nil.

Your patch is a cure for the symptom instead of the disease.

The problem is that the node `Index' of the the w3m manual is recognized
as an index node (but actually it is a normal node with a menu that has
references to index nodes) because it has the word `Index' in the node
name and does not support index cookies (because it is generated by
`texinfmt.el', not by `makeinfo').

-- 
Juri Linkov
http://www.jurta.org/emacs/