I.e., it prepends the choice instead of replacing it.

But it's otherwise what I want.  😃

Perhaps it should also highlight the current choice in the
*Completions* buffer?  It moves point in the buffer, but that's a
too-subtle hint, I think.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no