[Gmsh] Problem with extrusion

[Philippe Lussou]

lc = 0.1;

Point(1)={0.0,0.0,0.0,lc};
Point(2)={1.0,0.0,0.0,lc};

Line(1)={1,2};

Extrude Line { 1, {0,0.1,0.0} }
 { Layers { 10, 10, 1 };
 Recombine;
};

// The above command should number the new surface 10,
// however in practice the new surface number is 5.
// Is this a bug? or am I doing something wrong?