*** src/ov-base-mat.cc.orig	2004-03-12 20:26:58.000000000 +0100
--- src/ov-base-mat.cc	2004-04-22 16:28:38.000000000 +0200
***************
*** 193,211 ****
  {
    bool retval = false;
  
!   if (matrix.dims () . length () == 2)
      {
!       if (rows () > 0 && columns () > 0)
! 	{
! 	  boolNDArray m = (matrix.all () . all ());
! 	  
! 	  retval = (m.rows () == 1 && m.columns () == 1 && m(0,0));
! 	}
      }
!   else
!     (*current_liboctave_error_handler)
!       ("is_true not yet implemented for N-d Arrays");
!   
    return retval;
  }
  
--- 193,209 ----
  {
    bool retval = false;
  
!   dim_vector dv = matrix.dims ();
! 
!   if (dv.numel () > 0)
      {
!       boolNDArray m = matrix.all ();
!       for (int i = 1; i < matrix.dims ().length (); i++)
! 	m = m.all ();
! 
!       retval = (m.rows () == 1 && m.columns () == 1 && m(0,0));
      }
! 
    return retval;
  }