Help with delaunay input validation

[Rik]

Can someone test the following code under Matlab?  According to the
documentation this should produce an error as only column vectors are
acceptable input.  However, Octave has accepted this in the past.

x = [1 5 2; 5 6 7];
y = [5 7 8; 1 2 3];
tri = delaunay (x,y);

Thanks,
Rik