--- sed-4.2.1/sed/sed.c	2009-06-03 21:10:51.000000000 +0200
+++ sed-4.2.1_copy/sed/sed.c	2009-06-30 14:12:28.000000000 +0200
@@ -174,11 +174,11 @@ main(argc, argv)
   char **argv;
 {
 #ifdef REG_PERL
-#define SHORTOPTS "bsnrRuEe:f:l:i::V:"
+#define SHORTOPTS "cbsnrRuEe:f:l:i::V:"
 #else
-#define SHORTOPTS "bsnruEe:f:l:i::V:"
+#define SHORTOPTS "cbsnruEe:f:l:i::V:"
 #endif
-
+/* -c --copy is just a dummy param to keep backward compatibility */
   static struct option longopts[] = {
     {"binary", 0, NULL, 'b'},
     {"regexp-extended", 0, NULL, 'r'},
@@ -196,6 +196,7 @@ main(argc, argv)
     {"unbuffered", 0, NULL, 'u'},
     {"version", 0, NULL, 'v'},
     {"help", 0, NULL, 'h'},
+    {"copy", 0, NULL, 'c'},
 #ifdef ENABLE_FOLLOW_SYMLINKS
     {"follow-symlinks", 0, NULL, 'F'},
 #endif