On 09.05.18 07:46, Jo wrote:
The whole country has 3 official languages. In the north nl is the
official language, in the south fr. And a small area in the east is
de. Brussels is officially bilingual. Hence all names there will be a
combination of fr - nl.
Normally I would expect Belgium to not have default_language set. You
may have to keep a list of countries where it only makes sense to look
at the next smaller geographic regions.
I expect the same goes for Switzerland (whole country 3-4 official
languages, but at the next geographic level it is clear which language
is spoken/official for which region).
I think in most multilingual countries the regions are not so clearly
Hello Jo and Yuri,
Here is the text of the article 4 of the Belgian constitution 
Belgium comprises four linguistic regions: the Dutch-speaking region,
speaking region, the bilingual region of Brussels-Capital and the
Each municipality of the Kingdom forms part of one of these linguistic
In the Swiss constitution  it is stated directly that there are four
national languages. It is also the article 4:
"Art. 4 National languages
The National Languages are German, French, Italian, and Romansh."
It is not a light question, - which language is the default one for
these countries. In my opinion, following these official texts is the
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