Clarify confusing Gnus error message

* lisp/gnus/gnus-topic.el (gnus-topic-unindent): Clarify
confusing error message (bug#17677).

diff --git a/lisp/gnus/gnus-topic.el b/lisp/gnus/gnus-topic.el
index 8ab8f462885c810fe08a691cb4d698e407af7d01..6d6e20dc129b62313157e0d117fd0098ef01dd8f 100644 (file)
--- a/lisp/gnus/gnus-topic.el
+++ b/lisp/gnus/gnus-topic.el
@@ -1564,7 +1564,7 @@ If UNINDENT, remove an indentation."
         (parent (gnus-topic-parent-topic topic))
         (grandparent (gnus-topic-parent-topic parent)))
     (unless grandparent
-      (error "Nothing to indent %s into" topic))
+      (error "Can't unindent %s further" topic))
     (when topic
       (gnus-topic-goto-topic topic)
       (gnus-topic-kill-group)