diff -ru ratpoison/src/actions.c ratpoison-patched/src/actions.c
--- ratpoison/src/actions.c	Sun Sep 23 09:43:40 2001
+++ ratpoison-patched/src/actions.c	Wed Oct 10 04:00:34 2001
@@ -64,6 +64,7 @@
     {"select", 		cmd_select,	arg_STRING},
     {"source",		cmd_source,	arg_STRING},
     {"split",		cmd_h_split,	arg_VOID},
+    {"third", 		cmd_third, 	arg_VOID},
     {"title", 		cmd_rename, 	arg_STRING},
     {"unbind",		cmd_unbind,	arg_STRING},
     {"version",		cmd_version,	arg_VOID},
@@ -224,6 +225,7 @@
   add_keybinding (XK_A, ControlMask, "title");
   add_keybinding (XK_K, 0, "kill");
   add_keybinding (XK_K, ControlMask, "kill");
+  add_keybinding (XK_T, 0, "third");
   add_keybinding (XK_Return, 0, "next");
   add_keybinding (XK_Return, ControlMask,	"next");
   add_keybinding (XK_a, 0, "time");
@@ -614,6 +616,21 @@
 
   if (!w)
     message (MESSAGE_NO_OTHER_WINDOW);
+  else
+    set_active_window (w);
+
+  return NULL;
+}
+
+char *
+cmd_third (int interactive, void *data)
+{
+  rp_window *w;
+
+  w = find_window_third ();
+
+  if (!w)
+    message (MESSAGE_NO_THIRD_WINDOW);
   else
     set_active_window (w);
 
diff -ru ratpoison/src/actions.h ratpoison-patched/src/actions.h
--- ratpoison/src/actions.h	Fri Sep 21 11:47:23 2001
+++ ratpoison-patched/src/actions.h	Wed Oct 10 03:56:00 2001
@@ -56,6 +56,7 @@
 char * cmd_prev_frame (int interactive, void *data);
 char * cmd_windows (int interactive, void *data);
 char * cmd_other (int interactive, void *data);
+char * cmd_third (int interactive, void *data);
 char * cmd_time (int interactive, void *data);
 char * cmd_version (int interactive, void *data);
 char * cmd_unimplemented (int interactive, void *data);
Only in ratpoison-patched/src: config.h.in
diff -ru ratpoison/src/list.c ratpoison-patched/src/list.c
--- ratpoison/src/list.c	Fri Sep 21 11:47:23 2001
+++ ratpoison-patched/src/list.c	Wed Oct 10 04:03:54 2001
@@ -314,6 +314,44 @@
   return most_recent;
 }
 
+rp_window *
+find_window_third ()
+{
+  int last_access = 0, next_last_access = 0;
+  rp_window *most_recent = NULL, *next_most_recent = NULL;
+  rp_window *cur;
+
+  for (cur = rp_mapped_window_sentinel->next; 
+       cur != rp_mapped_window_sentinel; 
+       cur = cur->next)
+    {
+      if (cur->last_access >= last_access 
+	  && cur != current_window()
+	  && !find_windows_frame (cur))
+	{
+	  next_most_recent = most_recent;
+	  most_recent = cur;
+	  next_last_access = last_access;
+	  last_access = cur->last_access;
+	}
+      else if (cur->last_access >= next_last_access
+	       && cur != current_window()
+	       && !find_windows_frame (cur))
+	{
+	  next_most_recent = cur;
+	  next_last_access = cur->last_access;
+	}
+    }
+  /* If there only are two windows (i.e. next_most_windows is still
+     NULL, we take the most recent */
+  if (!next_most_recent && most_recent)
+    {
+      next_most_recent = most_recent;
+    }
+  
+  return next_most_recent;
+}
+
 /* This somewhat CPU intensive (memcpy) swap function sorta defeats
    the purpose of a linear linked list. */
 /* static void */
diff -ru ratpoison/src/list.h ratpoison-patched/src/list.h
--- ratpoison/src/list.h	Fri Sep 21 11:47:23 2001
+++ ratpoison-patched/src/list.h	Wed Oct 10 03:30:26 2001
@@ -49,6 +49,7 @@
 
 /* int goto_window_name (char *name); */
 rp_window *find_window_other ();
+rp_window *find_window_third ();
 rp_window *find_window_by_number (int n);
 rp_window *find_window_name (char *name);
 rp_window *find_window_prev (rp_window *w);
diff -ru ratpoison/src/messages.h ratpoison-patched/src/messages.h
--- ratpoison/src/messages.h	Sun Sep  9 04:59:23 2001
+++ ratpoison-patched/src/messages.h	Wed Oct 10 03:51:27 2001
@@ -25,6 +25,7 @@
 #include "config.h"
 
 #define MESSAGE_NO_OTHER_WINDOW 	" No other window "
+#define MESSAGE_NO_THIRD_WINDOW 	" No next to last window "
 #define MESSAGE_NO_OTHER_FRAME 		" No other frame "
 #define MESSAGE_NO_MANAGED_WINDOWS 	" No managed windows "
 #define MESSAGE_UNKNOWN_COMMAND 	": unknown command '%s' "