--- a/src/DLD-FUNCTIONS/convhulln.cc	Wed Feb 01 10:37:25 2012 -0800
+++ b/src/DLD-FUNCTIONS/convhulln.cc	Mon Jan 30 08:22:32 2012 -0500
@@ -278,11 +278,16 @@
 /*
 %!testif HAVE_QHULL
 %! cube = [0 0 0;1 0 0;1 1 0;0 1 0;0 0 1;1 0 1;1 1 1;0 1 1];
-%! [h, v] = convhulln (cube);
-%! assert (size (h), [6 4]); 
-%! h = sortrows (sort (h, 2), [1:4]);
-%! assert (h, [1 2 3 4; 1 2 5 6; 1 4 5 8; 2 3 6 7; 3 4 7 8; 5 6 7 8]);
+%! [h, v] = convhulln (cube, "Qt");
+%! assert (size (h), [12 3]); 
+%! h = sortrows (sort (h, 2), [1:3]);
+%! assert (h, [1 2 4; 1 2 6; 1 4 8; 1 5 6; 1 5 8; 2 3 4; 2 3 7; 2 6 7; 3 4 7; 4 7 8; 5 6 7; 5 7 8]);
 %! assert (v, 1, 10*eps);
+%! [h2, v2] = convhulln (cube); % Test defaut option = "Qt"
+%! assert (size (h2), size (h))
+%! h2 = sortrows (sort (h2, 2), [1:3]);
+%! assert (h2, h);
+%! assert (v2, v, 10*eps);
 
 %!testif HAVE_QHULL
 %! cube = [0 0 0;1 0 0;1 1 0;0 1 0;0 0 1;1 0 1;1 1 1;0 1 1];