===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/tmux/format.c,v
retrieving revision 1.3
retrieving revision 1.4
diff -u -r1.3 -r1.4
--- src/usr.bin/tmux/format.c	2011/10/23 01:12:46	1.3
+++ src/usr.bin/tmux/format.c	2011/11/15 23:21:52	1.4
@@ -1,4 +1,4 @@
-/* $OpenBSD: format.c,v 1.3 2011/10/23 01:12:46 nicm Exp $ */
+/* $OpenBSD: format.c,v 1.4 2011/11/15 23:21:52 nicm Exp $ */
 
 /*
  * Copyright (c) 2011 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -361,6 +361,7 @@
 	struct grid_line	*gl;
 	unsigned long long	 size;
 	u_int			 i;
+	u_int			 idx;
 
 	size = 0;
 	for (i = 0; i < gd->hsize; i++) {
@@ -370,9 +371,13 @@
 	}
 	size += gd->hsize * sizeof *gd->linedata;
 
+	if (window_pane_index(wp, &idx) != 0)
+		fatalx("index not found");
+
 	format_add(ft, "pane_width", "%u", wp->sx);
 	format_add(ft, "pane_height", "%u", wp->sy);
 	format_add(ft, "pane_title", "%s", wp->base.title);
+	format_add(ft, "pane_index", "%u", idx);
 	format_add(ft, "history_size", "%u", gd->hsize);
 	format_add(ft, "history_limit", "%u", gd->hlimit);
 	format_add(ft, "history_bytes", "%llu", size);