Index: libnotify-0.7.5/tools/notify-send.c
===================================================================
--- libnotify-0.7.5.orig/tools/notify-send.c	2011-10-14 11:24:15.000000000 +1300
+++ libnotify-0.7.5/tools/notify-send.c	2012-05-22 22:15:43.370979671 +1200
@@ -130,6 +130,8 @@
         static char        *icons = NULL;
         static char       **n_text = NULL;
         static char       **hints = NULL;
+        static gboolean     print_id = FALSE;
+        static gint         replace_id = 0;
         static gboolean     do_version = FALSE;
         static gboolean     hint_error = FALSE;
         static glong        expire_timeout = NOTIFY_EXPIRES_DEFAULT;
@@ -159,6 +161,10 @@
                  N_
                  ("Specifies basic extra data to pass. Valid types are int, double, string and byte."),
                  N_("TYPE:NAME:VALUE")},
+                {"print-id", 'p', 0, G_OPTION_ARG_NONE, &print_id,
+                 N_ ("Print the notification ID."), NULL},
+                {"replace-id", 'r', 0, G_OPTION_ARG_INT, &replace_id,
+                 N_ ("The ID of the notification to replace."), N_("REPLACE_ID")},
                 {"version", 'v', 0, G_OPTION_ARG_NONE, &do_version,
                  N_("Version of the package."),
                  NULL},
@@ -233,6 +239,9 @@
 
         g_free (body);
 
+        if (replace_id)
+                g_object_set (notify, "id", replace_id, NULL);
+
         /* Set hints */
         if (hints != NULL) {
                 gint            i = 0;
@@ -272,6 +281,12 @@
         if (!hint_error)
                 notify_notification_show (notify, NULL);
 
+        if (print_id) {
+                gint id;
+                g_object_get (notify, "id", &id, NULL);
+                g_printf ("%d\n", id);
+        }
+
         g_object_unref (G_OBJECT (notify));
 
         notify_uninit ();