CGAL users discussion list

I have a triangulation (2d) "t"; after some calls of 
  
   vertex_h=t.tds().join_vertices(face_h, index);

in my opinion I get a strange result (face_h, is NOT the last finite 
face of t).

There is an incident face ("face_A"), to vertex_h.
2 neighbors ot face_A point to the same face ("face_B") and face_B has 
the same vertices as face_A except the order of the vertices.

Is this  behavior correct under some circumstances or is it a bug?

Regards, 

Richard