> I remember I found this code on emacs.stackexchange.com website. > > I did a Google search now, I found someone indeed proposed this feature. Here is > the email archive: > > https://lists.gnu.org/archive/html/emacs-orgmode/2019-08/msg00013.html > > I saw this thread is stopped. Seems no patch provided. Does anyone want to implement it? See the attached. Best, Ihor