>>> "UB" == Uwe Brauer <oub@mat.ucm.es> writes:

> Hi

> I have the following table
> | name  | marks |
> |-------+-------|
> | Auser |   0.5 |
> | Buser |     2 |
> | Cuser |     0 |
> | Duser |     2 |
> | Euser |     0 |
> | Fuser |     3 |
> | Guser |       |
> | Huser |     0 |
> | Iuser |       |
> | Juser |     6 |

Consider 

| 2 |
| 1 |
| 1 |
| 0 |
|   |
|   |

(org-table-sort-lines nil nil nil nil t) (numerically 'n' gives)


| 0 |
|   |
|   |
| 1 |
| 1 |
| 2 |


But 
(org-table-sort-lines nil nil nil nil t) (numerically 'N') 

gives

| 2 |
| 1 |
| 1 |
| 0 |
|   |
|   |

So no empty lines, what the hell is going on here?