Languagestats-stats-for

That's because the Uppersorbian language translations are not in CLDR 1.8, so it takes the translation from the first available fallback in CLDR, being German.

Thanks. CLDR is used in MediaWiki? I always thought that the file names.php is used for defining localized language names. I know that in any external translation project of translatewiki CLDR plural rules are used, but inside MediaWiki?

Names.php only contains autonyms, no translations. The MediaWiki extension CLDR has the available translations from CLDR for language names.

Thanks. What a pity. Maybe I will contact CLDR and do all what is necessary for registering Upper Sorbian and Lower Sorbian. I've already seen xml files that contain the language names in the respective language. They are app. 3650 lines big. It will be a lot of work and this for 2 languages.

That's true, but it will mean that your languages will get an actual locale in for example most Linux distributions.