Questão jurídica principal
Whether the federal public-law appeal was admissible against the cantonal decision upholding detention
Decisão extraída
The appeal was admissible only to the extent it sought X.'s immediate release; the request for a merely declaratory ruling and the challenge to the separate arrest warrant were not within the appeal's scope.
Fundamentação extraída
A public-law appeal is mainly cassatory, but an exception applies when a positive measure is needed to restore constitutional conformity, as with unlawful detention. The canton-court's dismissal of the separate challenge was uncontested, so the federal review was limited to the later detention order.