Check art is a number.

[gnus] / lisp / gnus-agent.el

diff --git a/lisp/gnus-agent.el b/lisp/gnus-agent.el
index 9944184..76dfca3 100644 (file)
--- a/lisp/gnus-agent.el
+++ b/lisp/gnus-agent.el
@@ -1471,9 +1471,10 @@ The following commands are available:
                                 (or (not (numberp
                                           (setq art (read (current-buffer)))))
                                     (< art article)))
-                      (if (file-exists-p
-                           (gnus-agent-article-name
-                            (number-to-string art) group))
+                      (if (and (numberp art) 
+                               (file-exists-p
+                                (gnus-agent-article-name
+                                 (number-to-string art) group)))
                           (progn
                             (unless lowest
                               (setq lowest art))