I'm unsure which language choose as fallback. I'm thinking on french due to the colonial past of Algeria, where I think most people still understand/use the language and Shawiya being in Latin script. Arabic is out of the question for me as this is a latin script language. I'd appreciate some guidance here @Amire80 - thanks.
I've also seen https://en.wikipedia.org/wiki/Kabyle_language as candidate, but I'm not sure here.
Hi again @Amire80: @Raymond and myself are not sure which is the "official" name for Shawiya. ISO639-3 names it "Tachawit", Wikipedia mentions 2 other similar names so we doubt which one to choose. Also, insisting on my question above at T194047#4187192, I am not sure which fallback language, if any, should we use. I propose French, but I'm not sure either. Thanks for your help.