On a similar vibe, in Catalan oi is used instead of sí in questions, like in "T'has menjat el desdejuni, oi?", which may surely come from oui or the ancient oil

On a similar vibe, in Catalan oi is used instead of sí in questions, like in "T'has menjat el desdejuni, oi?", which may surely come from oui or the ancient oil in French.