Thanks for the link. After looking through it i see following major points:
- thread is from 2013 and nothing changed today in 2016
- quote from that thread (C) Dimitri Fontaine
"That topic apparently raises each year and rehash the same points"
(So ... there should be more similar discussions in previous years, i.e.
topic was first stated more than 3 years ago)
- most people agree that DO somehow needs to be made 'RETURNING', but there
is no consensus how this should be made
And out of that I feel there is no luck with that feature in foreseeable
future :(.