>>> "NG" == Nicolas Goaziou <mail@nicolasgoaziou.fr> writes:

> Hello,
> Uwe Brauer <oub@mat.ucm.es> writes:

>> I am running emacs 28 master 84ec57fe06e187f41a3546131d5dae3b185c3511
>> 
>> Steps to reproduce 
>> 
>> #+TBLNAME: original
>> | Day       | Color | Level | Quantity |
>> 
>> |-----------+-------+-------+----------|
>> | Monday    | Red   |    30 |       11 |
>> | Monday    | Blue  |    25 |        3 |
>> | Tuesday   | Red   |    51 |       12 |
>> | Tuesday   | Red   |    45 |       15 |
>> | Tuesday   | Blue  |    33 |       18 |
>> | Wednesday | Red   |    27 |       23 |
>> | Wednesday | Blue  |    12 |       16 |
>> | Wednesday | Blue  |    15 |       15 |
>> | Thursday  | Red   |    39 |       24 |
>> | Thursday  | Red   |    41 |       29 |
>> | Thursday  | Red   |    49 |       30 |
>> | Friday    | Blue  |     7 |        5 |
>> | Friday    | Blue  |     6 |        8 |
>> | Friday    | Blue  |    11 |        9 |
>> 
>> Put curso on number 30 in the third column call the function and select
>> numercial sorting, a bug trace occurs which I attach. 

> I cannot reproduce it. I'm using neither Emacs 28 nor Org Ref, tho.

I tried it with emacs27 and obtained the same error

>> I run undo, widen and repeat the operation and then it works 
>               ^^^^^
>                ???

> You didn't say you were narrowing something.

I did not! The buffer got widen when I executed the command.


> Anyway, for the time being the error may come from Org Ref (org-ref-delete-labels).

Very odd, but in earlier org version this problem did not occur.

@John, do you have any comments?

I will try to upgrade org-ref and if that does not help I will try to
bisect the problem compiling older org versions