On 14 Jun 2022, Manuel Giraud wrote:
>I hope it is not to late for this but I'd like to have this 
>modification
>pushed.  This changes the field name from 'last-modified to 
>'modified
>(the symbol for `bookmark-sort-flag' is kept to 'last-modified).
>
>I think it make more sense since the "last" in 'last-modified 
>refers to
>the order (ie. the most recently modified will be first). 
>Afterward,
>I'd like to introduce a 'created field too.

Manuel, it looks like this change hasn't been pushed yet.  I was 
about to review it, but I noticed there was some commentary in the 
thread following up to your post.  Did you have a revised version 
of the patch in response to any of the commentary, or should I 
just review the original patch as you posted it on 14 June 2022?

I'll attach the patch below for convenience.

Best regards,
-Karl