--- a/src/line_proto.h	Tue Mar 10 03:38:20 2009 +0200
+++ b/src/line_proto.h	Tue Mar 10 03:48:00 2009 +0200
@@ -20,7 +20,9 @@
 struct line_proto_callbacks {
     /** Handle received line */
     void (*on_line) (char *line, void *arg);
-
+    
+    /** Event-based action failed */
+    void (*on_error) (struct error_info *err, void *arg);
 };
 
 /**