This is needed for Lingua Libre files on Commons
Chadian Arabic
- Code: shu
- Commons category: https://commons.wikimedia.org/wiki/Category:Lingua_Libre_pronunciation-shu
- Wikidata item: https://www.wikidata.org/wiki/Q56497
- BCP 47: https://r12a.github.io/app-subtags/index?check=shu