[Gmsh] Periodic surfaces and Embedded lines

[tarasov at pmi.lv]

Hi!
Periodic meshing of surfaces fails if surface contains embedded line.
Is it a bug or do I miss something?

Here is sample code:

-------------------------------------------------------------
SetFactory("OpenCASCADE");
Box(1) = { 0, 0, 0, 1, 1, 1 };

Point(10) = {0.5, 0.5, 0};
Point(11) = {0.7, 0.7, 0};
Point(12) = {0.5, 0.5, 1};
Point(13) = {0.7, 0.7, 1};

Line(15) = {10, 11};
Line(16) = {12, 13};

Curve {15} In Surface{5};
Curve {16} In Surface{6};
Periodic Surface{ 6 } = { 5 } Translate{ 0,0,1 };

Mesh 3;
-------------------------------------------------------------

Best regards,
     Sergey Tarasov.