Thank you both for following up on this! I'm going to add a note to my
package that this feature is now built-in and deprecate it.

m.

On Wed, 12 Feb 2020, 08:43 Bastien, <bzg@gnu.org> wrote:

> Hi Phil,
>
> Phil Sainty <psainty@orcon.net.nz> writes:
>
> > A nice feature that may be missing from this implementation
> > is the ability to mark individual lists as radio-button lists,
> > and then have C-c C-c do the right thing contextually.
>
> Good idea, this is now in.
>
> > The syntax John and Matúš used was:
> >
> > #+attr_org: :radio
>
> I think it should be "#+attr_org: :radio t".
>
> Try "#+attr_org: :radio t" and let me know if it works for you.
>
> > If that's practical to add to the new implementation, I would think
> > it would provide the best end-user experience for interacting with
> > such lists.
>
> Yes, I find it nice too, thanks again for suggestion this!
>
> Best,
>
> --
>  Bastien
>