I made this patch from github emacs-mirror repository.
I hope this will be of help.

Thanks.

2019년 7월 13일 (토) 오후 12:42, Lars Ingebrigtsen <larsi@gnus.org>님이 작성:

> SK Kim <tttuuu888@gmail.com> writes:
>
> > This is not likely a bug but sort-numeric-fields function does not
> > allow region with blank lines, while sort-lines does.
> >
> > This was because sort-skip-fields occurs error with blank line. And
> > when I added condition for sort-skip-fields like below,
> > sort-numeric-fields was working with blank lines too.
> >
> >                      (when (not (string-match-p "^\\s-*$"
> (thing-at-point 'line)))
> >                        (sort-skip-fields field))
> >
> > So, I just hope sort-numeric-fields would work for region with blank
> > lines too.
>
> Can you create a patch for this fix?
>
> --
> (domestic pets only, the antidote for overdose, milk.)
>    bloggy blog: http://lars.ingebrigtsen.no
>