mul.ws (OldWikisource) now has translation administrator capabilities and we have many languages that we host but we cannot define the pages as being in that language using page info. E.g. I cannot define https://wikisource.org/w/index.php?title=Main_Page/Dagbanli&action=info as being in dag. Please add these language codes--including mis, mul, und, and zxx.
* T202794#4536734 (list from August 2018)
* [[https://query.wikidata.org/#SELECT%20DISTINCT%20%3Fitem%20%3FitemLabel%20%3FitemDescription%20%3Fietf%20%20%3Furl%20%3Fl0%0A%7B%0A%20%20%20%20wd%3AQ18198097%20p%3AP407%20%2F%20ps%3AP407%20%3Fitem%20.%0A%20%20%20%20hint%3APrior%20hint%3ArangeSafe%20true%20.%0A%20%20%20%20OPTIONAL%20%7B%20%3Fitem%20wdt%3AP305%20%3Fietf%20%7D%0A%20%20%20%20FILTER%20NOT%20EXISTS%20%7B%20%3Fitem%20wdt%3AP424%20%5B%5D%20%7D%0A%20%20%20%20OPTIONAL%20%7B%20%3Fmainpage%20wdt%3AP31%20wd%3AQ21450877%20%3B%20wdt%3AP407%20%3Fitem%20.%20%3Furl%20schema%3Aabout%20%3Fmainpage%20%3B%20schema%3AisPartOf%20%3Chttps%3A%2F%2Fwikisource.org%2F%3E%20%20%7D%0A%20%20%20%20SERVICE%20wikibase%3Alabel%20%7B%20bd%3AserviceParam%20wikibase%3Alanguage%20%22%5BAUTO_LANGUAGE%5D%2Cen%22.%20%7D%0A%7D%0AORDER%20BY%20%3Fietf | sample query]] (finds some)