Last modified: 2014-10-25 11:46:37 UTC
Typing {{#Babel:deu|...}} yields a Babel box showing the incorrect language code "de" instead of "deu" Please amend.
This is not about de/deu alone. There are many of the same kind.
I think this is because "deu" is the ISO 639-3 code for German: http://www.sil.org/iso639-3/documentation.asp?id=deu