[Question] How can I get metadata from completion-in-region

[Thierry Volpiatto]

Hi,
is is possible to get the metadata from the 'collection' value of
`completion-in-region' ?

Actually I get my completion list with `all-completions' in my
specialized `completion-in-region-function' but I have not
the additional info at end of string.

e.g I get "foo", but I would like to have "foo <f>"

I read minibuffer.el, but I couldn't find how to get this, or maybe I
missed something, any pointer welcome.

See:
https://github.com/emacs-helm/helm/issues/407

Thanks.

-- 
Thierry
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