On Wednesday, 21 Mar 2018 at 10:02, Uwe Brauer wrote:
>    > On Monday, 19 Mar 2018 at 16:43, Uwe Brauer wrote:
>
>    > Maybe I misunderstand something here but sc-citation-leader is local to
>    > the summary buffer so its value will not propagate to a message buffer?
>    > I.e. not a bug.
>
> Well but how can I then pass that variable to the message buffer, but
> only groupwise?

Maybe look at the message package, not gnus, as message is responsible
for composing emails?  For instance, you could put some code in
message-header-setup-hook which sets the variables you want depending on
the contents of the message header?

-- 
Eric S Fraga via Emacs 27.0.50 & org 9.1.7 on Debian buster/sid