[xml/sgml-pkgs] Bug#692756: docbook-document-element inconsistencies

[Mathieu Malaterre]

Looks like there is an inconsistencies:


 --docbook-document-element=<ROOT ELEMENT>
  -r <ROOT ELEMENT>      - The root element of the document. Possible
values are: book
                           and article. The default value is article.


while:


The option "--docbook-document-element" has an invalid value of "boo".
Possible values are: article, book, reference.