1mtllib issue-177.mtl 2 3v 0.000000 2.000000 2.000000 4v 0.000000 0.000000 2.000000 5v 2.000000 0.000000 2.000000 6v 2.000000 2.000000 2.000000 7v 0.000000 2.000000 0.000000 8v 0.000000 0.000000 0.000000 9v 2.000000 0.000000 0.000000 10v 2.000000 2.000000 0.000000 11# 8 vertices 12 13g front cube 14usemtl white 15f 1 2 3 4 16g back cube 17# expects white material 18f 8 7 6 5 19g right cube 20usemtl red 21f 4 3 7 8 22g top cube 23usemtl white 24f 5 1 4 8 25g left cube 26usemtl green 27f 5 6 2 1 28g bottom cube 29usemtl white 30f 2 6 7 3 31# 6 elements 32