bug#19404: 25.0.50; Gnus shows self-signed certificate warning when connecting to Gmane

[Eli Zaretskii]

> From: Lars Magne Ingebrigtsen <larsi@gnus.org>
> Cc: dgutov@yandex.ru,  19404@debbugs.gnu.org
> Date: Thu, 18 Dec 2014 19:57:28 +0100
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > Is this text returned by GnuTLS, or do we produce it in Emacs?
> 
> We produce it in Emacs.
> 
> > If the latter, can _we_ somehow distinguish between the two cases and
> > add some text to that effect?
> 
> These are our translation to text from the GnuTLS error messages (which
> we have previously translated to symbols).  I had hoped that the :not-ca
> case would help, but I've never seen it in the wild.  

What about the "self-signed" part, why is that being reported for
certificates whose authority could not be verified, like in my use
case?  That's not "self-signed" in my book.