Key legal question
Whether the public-law appeal was admissible despite the appellant's lack of merits standing in the criminal case.
Extracted holding
The appeal was admissible only insofar as it challenged the refusal to recognize civil-party status and related formal guarantees; it was not admissible on the merits of the criminal proceedings.
Extracted reasoning
A complainant without victim status cannot attack the substance of a decision to discontinue proceedings, but may invoke formal procedural rights if their denial amounts to a formal denial of justice.