Key legal question
Whether the appeal was admissible and whether only constitutional violations could be reviewed under Art. 98 BGG
Extracted holding
The appeal was in principle admissible as a final cantonal decision in a civil matter, but review was limited to alleged constitutional violations.
Extracted reasoning
Eheschutz decisions are provisional measures under Art. 98 BGG; therefore only constitutional rights may be invoked, under the strict pleading standard.