On Thu, May 5, 2016 at 5:02 PM, Stefan Monnier 
<monnier@IRO.UMontreal.CA> wrote:
> It'd be better to avoid the :exclusive thingy, and use something like
> completion-table-merge instead.
> 
> :exclusive basically prevents any completion style other than prefix
> completion, so it's better avoid it when possible.  This said, it's 
> not
> a real objection.

Something along these lines?

-- Simen