In Ulster, would it be more correct to say “Cad é a duirt tú?,” rather than “Cad a duirt tú?”…Can “Cad é” be used in any circumstance to mean “what”? GRMA! 🙂
Certainly more faithful to the dialect rather than more “correct”. Have a look at ‘cad/cad é’ in FGB. Sometimes spelled “goidé” or “caidé” to reflect its pronunciation.