Dear Eric,

Just a quick email  to tell you that I have  just succeeded to configure
gnus-alias [[https://www.emacswiki.org/emacs/GnusAlias]]

rather     correctly     mainly     thanks    to     Fabrice     Niessen
[[https://github.com/fniessen/emacs-leuven/blob/master/gnus-leuven.el]]
(many thanks Fabrice !)

and thanks to other  related web pages. I still do  not succeed to use
correctly  regular  expressions   for  gnus-alias-identity-rules  but,
anyway, at  the moment  it works  correctly for  me. It  is a  very good
tool. 

Best wishes,

Jo