Question juridique clé
Whether the federal appeal against the cantonal refusal of suspensive effect was admissible.
Solution extraite
The appeal was admissible because the challenged decision was an incidental civil matter capable of causing irreparable harm.
Motifs extraits
Refusal of suspensive effect in a child custody provisional-measures case can create irreparable prejudice; the appeal was timely and filed against a cantonal instance deciding the suspensive effect issue.