Markus Krötzsch, 03/08/2013 15:48:
(3) Limited language support. The script uses Wikidata's internal language codes for string literals in RDF. In some cases, this might not be correct. It would be great if somebody could create a mapping from Wikidata language codes to BCP47 language codes (let me know if you think you can do this, and I'll tell you where to put it)
These are only a handful, aren't they?
(4) Limited site language support. To specify the language of linked wiki sites, the script extracts a language code from the URL of the site. Again, this might not be correct in all cases, and it would be great if somebody had a proper mapping from Wikipedias/Wikivoyages to language codes.
Apart from the above, doesn't wgLanguageCode in https://noc.wikimedia.org/conf/highlight.php?file=InitialiseSettings.php have what you need?
Nemo