The completion function expects a list instead of an alist.

[gnus] / lisp / gnus-sum.el

diff --git a/lisp/gnus-sum.el b/lisp/gnus-sum.el
index 149ba5a..2bb39af 100644 (file)
--- a/lisp/gnus-sum.el
+++ b/lisp/gnus-sum.el
@@ -10004,7 +10004,7 @@ current group into whatever groups they are destined to.  In the
 latter case, they will be copied into the relevant groups."
   (interactive
    (list current-prefix-arg
-        (let* ((methods (gnus-methods-using 'respool))
+        (let* ((methods (mapcar #'car (gnus-methods-using 'respool)))
                (methname
                 (symbol-name (or gnus-summary-respool-default-method
                                  (car (gnus-find-method-for-group