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