Some commit today broke my Gnus

[Tassilo Horn <tassilo@member.fsf.org>]

Hi all,

since I've updated my git checkout some minutes ago until commit
647c17891849c561534af42b619e9679259ba2b3, I get a very strange warning
on startup.

  Warning: Warning - invalid active: 

And, after that happens, my *scratch* buffer has been modified to this:

--8<---------------cut here---------------start------------->8---
\;\; This buffer is for notes you don\'t want to save, and for Lisp evaluation.
\;\; If you want to create a file, visit that file with C-x C-f,
\;\; then enter the text in that file\'s own buffer.
--8<---------------cut here---------------end--------------->8---

What's going on?

I tried restarting emacs/gnus with `debug-on-error', but nothing errors.
Hm, after Gnus has started, I seem not to be able to get new news using
`g' anymore.  When I try, I get

  gnus-active-to-gnus-format: Buffer is read-only: #<buffer *Group*>

but no error (at least I don't enter the debugger...).

Bye,
Tassilo
-- 
Sent from my Emacs