diff -rupN rxvt-unicode-9.06/src/command.C rxvt-unicode-9.06_mod/src/command.C
--- rxvt-unicode-9.06/src/command.C	2008-11-05 17:21:05.000000000 +0100
+++ rxvt-unicode-9.06_mod/src/command.C	2009-11-22 18:37:06.000000000 +0100
@@ -398,7 +398,7 @@ map_function_key (KeySym keysym)
 void
 rxvt_term::key_press (XKeyEvent &ev)
 {
-  int ctrl, meta, shft, len;
+  int ctrl, meta, shft, super, len;
   KeySym keysym;
   int valid_keysym;
   char kbuf[KBUFSZ];
@@ -417,6 +417,8 @@ rxvt_term::key_press (XKeyEvent &ev)
   shft = ev.state & ShiftMask;
   ctrl = ev.state & ControlMask;
   meta = ev.state & ModMetaMask;
+  super = ev.state & Mod4Mask;
+
 
   if (numlock_state || (ev.state & ModNumLockMask))
     {
@@ -849,6 +851,10 @@ rxvt_term::key_press (XKeyEvent &ev)
       const char ch = C0_ESC;
       tt_write (&ch, 1);
     }
+  if (super) {
+      char buf[3] = { 0x18, '@', 's' };
+      tt_write (buf, 3);
+  }
 
   tt_write (kbuf, (unsigned int)len);
 }