Question juridique clé
Whether the public-law appeal was admissible despite the foreigner-law exclusion clause.
Solution extraite
The appeal was admissible because the appellant advanced a plausible potential right to a residence permit under Art. 50(1)(a) LEtr.
Motifs extraits
For admissibility, a merely arguable potential entitlement suffices; the merits of the entitlement are assessed later.