forgot to add these

benchmarks/bugs/projection.geo

+//
+Point(1) = {0,0,0,1};
+Point(2) = {0,10,0,1};
+Line(1) = {2,1};
+Extrude Line {1, {50.0,0.0,0.0}, {1,0,0}, {0,5,0}, Pi}{Recombine;Layers{50,9000,1};};
+//
+Point(1000) = {0,0,20,1};
+Point(2000) = {0,10,20,1};
+Line(1000) = {2000,1000};
+Extrude Line {1000, {50.0,0.0,0.0}, {1,0,0}, {0,5,20}, Pi*0.45};
+
+
+

benchmarks/bugs/torus.geo

+/********************************************************************* 
+ *
+ * Torus.geo Gmsh Program to Construct a Torus
+ *
+ *********************************************************************/
+ 
+cm  = 1e-02;          // Define our scale
+Lc1 = 0.5 * cm;       // Mesh size
+r1  =   4 * cm;       // Origin->Disk center radius
+r2  =   1 * cm;       // Disk radius
+ 
+r2c = r2 * Cos( Pi/4 );  // Cos/Sine terms to define disk circumference points
+r2s = r2 * Sin( Pi/4 );
+ 
+deg90 = Pi / 2;          // Radian representation of 90 Degs
+ 
+Point(1) = { 0.0,  0.0,   0.0,  Lc1 };   // Origin
+ 
+Point(2)  = { 0.0,  r1    ,  0.0 ,  Lc1 };   // Circle center
+Point(3)  = { 0.0,  r1+r2 ,  0.0 ,  Lc1 };   // 8 points along the circumference
+Point(4)  = { 0.0,  r1+r2c,  r2s ,  Lc1 };
+Point(5)  = { 0.0,  r1    ,  r2  ,  Lc1 };
+Point(6)  = { 0.0,  r1-r2c,  r2s ,  Lc1 };
+Point(7)  = { 0.0,  r1-r2 ,  0.0 ,  Lc1 };
+Point(8)  = { 0.0,  r1-r2c,  -r2s,  Lc1 };
+Point(9)  = { 0.0,  r1    ,  -r2 ,  Lc1 };
+Point(10) = { 0.0,  r1+r2c,  -r2s,  Lc1 };
+ 
+Circle(1) = {  3, 2,  4 } ;   // Arcsegments along the circumference
+Circle(2) = {  4, 2,  5 } ;
+Circle(3) = {  5, 2,  6 } ;
+Circle(4) = {  6, 2,  7 } ;
+Circle(5) = {  7, 2,  8 } ;
+Circle(6) = {  8, 2,  9 } ;
+Circle(7) = {  9, 2, 10 } ;
+Circle(8) = { 10, 2,  3 } ;
+ 
+// Merge arcsegments into a disk 
+Line Loop (9) = { 1,2,3,4,5,6,7,8 };
+Plane Surface(10) = {9};
+ 
+// Extrude the disk to form a partial torus
+ 
+// Things are fine as long as extrusion angle is <= Pi
+/* Extrude Surface {10, {0,0,1}, {0,0,0},  1* deg90 }; */
+ 
+// Things get somewhat odd for angles > Pi
+Extrude Surface {10, {0,0,1}, {0,0,0},    1.9* deg90 };// { Layers{100,10,1}; };
+