Question juridique clé
Whether the refusal to join the criminal proceedings caused irreparable harm justifying public-law appeal against an incidental decision.
Solution extraite
The alleged disadvantages were only factual inconveniences; no irreparable legal harm was shown.
Motifs extraits
Delay, costs, and procedural inconvenience are not irreparable legal prejudice under Art. 87 cpv. 2 OG. The merits of guilt remain for the trial court, and any later complaint can be raised against the final conviction.