tests/3030-table-null-cells

   1 -d: --table --grid
   2 1:Hydrogen
   3 2:Helium
   4 3:Lithium
   5
   6 5:Boron
   7 10:Neon
   8 11:Sodium
   9 12:Magnesium
  10 13:Aluminium
  11 102:Nobelium
  12 ---
  13 +-----+-----------+
  14 | 1   | Hydrogen  |
  15 | 2   | Helium    |
  16 | 3   | Lithium   |
  17 |     |           |
  18 | 5   | Boron     |
  19 | 10  | Neon      |
  20 | 11  | Sodium    |
  21 | 12  | Magnesium |
  22 | 13  | Aluminium |
  23 | 102 | Nobelium  |
  24 +-----+-----------+