Re: doc elisp intro cross reference fixes

[Luc Teirlinck]

Stefan Monnier wrote:

   What I suggested is to make something like `:group nil' not place
   the defcustom in any group (obviously not even in the `nil' group).

So the existence of this `nil' group actually _is_ unintentional?
I somehow got the impression from some of your previous posts that you
considered it an improvement over 21.3.

Sincerely,

Luc.