Variable-length return lists

Octave also has a real mechanism for handling functions that return an unspecified number of values so it is no longer necessary to place an upper bound on the number of outputs that a function can produce.

Here is an example of a function that uses the new syntax to produce N values:

     function [...] = foo (n)
       for i = 1:n
         vr_val (i);
       endfor
     endfunction