--- rxvt-unicode/src/rxvtc.C	2011/05/01 13:54:27	1.34
+++ rxvt-unicode/src/rxvtc.C	2021/07/23 19:18:52	1.38
@@ -7,7 +7,7 @@
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
+ * the Free Software Foundation; either version 3 of the License, or
  * (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
@@ -21,17 +21,18 @@
  *----------------------------------------------------------------------*/
 
 #include "../config.h"
-#include <cstdio>
-#include <cstdlib>
-#include <cstring>
-#include <csignal>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <signal.h>
 
 #include <unistd.h>
 #include <sys/socket.h>
 #include <sys/un.h>
 
+#include <libptytty.h>
+
 #include "rxvtdaemon.h"
-#include "libptytty.h"
 
 #define STATUS_SUCCESS           0
 #define STATUS_FAILURE           1
@@ -95,6 +96,12 @@
     sigprocmask (SIG_BLOCK, &ss, 0);
   }
 
+  if (argc >= 2 && !strcmp (argv[1], "-k"))
+    {
+      c.send ("QUIT");
+      return 0;
+    }
+
   c.send ("NEW");
 
   for (char **var = environ; *var; var++)