"Georg C. F. Greve" <greve@fsfeurope.org> writes:

> On Sat, 04 Aug 2007 21:44:48 -0400
> Xiao-Yong Jin <xj2106@columbia.edu> wrote: 
>
>  xj> Perhaps we should actually suggest Carsten build nnir support in
>  xj> org-mode and at the same time persuade the maintainer of nnir.el to
>  xj> support mairix?  ;-)
>
> I think this could be a clean solution to the problem.

Here is a patch against latest org-mode 5.04 as a first attempt of
implementing custom link-types (stored in `org-link-custom-types'.)