TopoGeo_addLineString with existing edge splits the edge in 3 parts

[strk]

Playing with a topology I was surprised to see TopoGeo_addLineString() adding an *existing* edge to the topology end up splitting the incoming edge into 3 parts and returning those 3 edges as a result.

The existing edge has only 2 vertices, and the closest edge from it (beside the ones connected to its endpoints) is at 0.0004 map units (degrees).

The TopoGeo_addLineString() function is being called with no tolerance value and the topology tolerance is 1e-10 so snapping should theoretically NOT occur.

[strk]

Sorry, this was an invalid report, I was NOT adding the *same* edge, but I was adding a translated version of it, moved elsewhere.