emms-info-track-description: Handle title-only tracks and fix documentation.

* lisp/emms-info.el: Handle tracks without artist, but with title
  information gracefully and fix documentation.

1 files changed, 8 insertions, 5 deletions

diff --git a/lisp/emms-info.el b/lisp/emms-info.el
index 9b0ffa8..2d089ac 100644
--- a/lisp/emms-info.el
+++ b/lisp/emms-info.el
@@ -124,12 +124,15 @@ Return nil otherwise."
     nil))
 
 (defun emms-info-track-description (track)
-  "Return a description of the current track."
+  "Return a description of TRACK."
   (let ((artist (emms-track-get track 'info-artist))
-        (title (emms-track-get track 'info-title)))
-    (if (and artist title)
-        (format "%s - %s" artist title)
-      (emms-track-simple-description track))))
+        (title  (emms-track-get track 'info-title)))
+    (cond
+     ((and artist title)
+      (concat artist " - " title))
+     (title
+      title)
+     (emms-track-simple-description track))))
 
 (provide 'emms-info)
 ;;; emms-info.el ends here