Questione giuridica chiave
Whether the public-law appeal was admissible despite the foreigner's limited statutory entitlement to a residence permit
Decisione estratta
The appeal was admissible because the appellant could invoke a potential right under Art. 50 LEtr; the existence of that right belonged to the merits, not admissibility.
Motivazione estratta
Even though no claim arose from Art. 42 LEtr after the marriage ended, Art. 50 LEtr could still confer a residual entitlement if its conditions were met.