lisp/gnus/gnus-int.el (gnus-backend-trace): Honour gnus-backend-trace

2 files changed, 15 insertions, 10 deletions

diff --git a/lisp/gnus/ChangeLog b/lisp/gnus/ChangeLog
index ebfc31fd91d..7cb278f2a6f 100644
--- a/lisp/gnus/ChangeLog
+++ b/lisp/gnus/ChangeLog
@@ -1,5 +1,8 @@
 2013-01-30  Christopher Schmidt  <christopher@ch.ristopher.com>
 
+        * gnus-int.el (gnus-backend-trace-elapsed): New variable.
+        (gnus-backend-trace): Honour gnus-backend-trace.
+
         * mml.el (mml-insert-part): Insert closing tag.
 
         * mm-decode.el (mm-save-part): Handle invalid read-file-name results.
diff --git a/lisp/gnus/gnus-int.el b/lisp/gnus/gnus-int.el
index 81e0252cf93..2378b598eeb 100644
--- a/lisp/gnus/gnus-int.el
+++ b/lisp/gnus/gnus-int.el
@@ -248,18 +248,20 @@ If it is down, start it up (again)."
       'denied))
 
 (defvar gnus-backend-trace nil)
+(defvar gnus-backend-trace-elapsed nil)
 
 (defun gnus-backend-trace (type form)
-  (with-current-buffer (get-buffer-create "*gnus trace*")
-    (buffer-disable-undo)
-    (goto-char (point-max))
-    (insert (format-time-string "%H:%M:%S")
-            (format " %.2fs %s %S\n"
-                    (if (numberp gnus-backend-trace)
-                        (- (float-time) gnus-backend-trace)
-                      0)
-                    type form))
-    (setq gnus-backend-trace (float-time))))
+  (when gnus-backend-trace
+    (with-current-buffer (get-buffer-create "*gnus trace*")
+      (buffer-disable-undo)
+      (goto-char (point-max))
+      (insert (format-time-string "%H:%M:%S")
+              (format " %.2fs %s %S\n"
+                      (if (numberp gnus-backend-trace-elapsed)
+                          (- (float-time) gnus-backend-trace-elapsed)
+                        0)
+                      type form))
+      (setq gnus-backend-trace-elapsed (float-time)))))
 
 (defun gnus-open-server (gnus-command-method)
   "Open a connection to GNUS-COMMAND-METHOD."