gnus-msg.el: Fix bug with `C-u a' on topics (bug#10843)

2 files changed, 4 insertions, 1 deletions

diff --git a/lisp/gnus/ChangeLog b/lisp/gnus/ChangeLog
index 387693f9ae0..eee886ec1c2 100644
--- a/lisp/gnus/ChangeLog
+++ b/lisp/gnus/ChangeLog
@@ -1,5 +1,8 @@
 2012-02-20  Lars Ingebrigtsen  <larsi@gnus.org>
 
+        * gnus-msg.el (gnus-group-post-news): Don't bug out on `C-u a' on
+        topics (bug#10843).
+
         * nnimap.el (nnimap-log-command): Add the IMAP address to the log
         buffer.  Suggested by Herbert Valerio Riedel.
         (nnimap-request-move-article): Delete the message from the correct IMAP
diff --git a/lisp/gnus/gnus-msg.el b/lisp/gnus/gnus-msg.el
index f92dc5e91d0..bf75f94c195 100644
--- a/lisp/gnus/gnus-msg.el
+++ b/lisp/gnus/gnus-msg.el
@@ -640,7 +640,7 @@ a news."
              (if (= 1 (prefix-numeric-value arg))
                  (gnus-group-completing-read "Newsgroup" nil
                                              (gnus-read-active-file-p))
-               (gnus-group-group-name))
+               (or (gnus-group-group-name) ""))
            ""))
         ;; make sure last viewed article doesn't affect posting styles:
         (gnus-article-copy))