Lower-case language tags
https://en.wikipedia.org/wiki/IETF_language_tag#Syntax_of_language_tags says that subtags are not case-sensistive. lang=RU
should work equally as lang=ru
.
https://en.wikipedia.org/wiki/IETF_language_tag#Syntax_of_language_tags says that subtags are not case-sensistive. lang=RU
should work equally as lang=ru
.