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diff --git a/string/argz-delete.c b/string/argz-delete.c
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+/* Routines for dealing with '\0' separated arg vectors.
+
+ Copyright (C) 1995, 1996 Free Software Foundation, Inc.
+
+ Written by Miles Bader <miles@gnu.ai.mit.edu>
+
+ 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, or (at
+ your option) any later version.
+
+ This program is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include <argz.h>
+#include <string.h>
+#include <stdlib.h>
+
+/* Delete ENTRY from ARGZ & ARGZ_LEN, if any. */
+void
+argz_delete (char **argz, size_t *argz_len, char *entry)
+{
+ if (entry)
+ /* Get rid of the old value for NAME. */
+ {
+ size_t entry_len = strlen (entry) + 1;
+ *argz_len -= entry_len;
+ memcpy (entry, entry + entry_len, *argz_len - (entry - *argz));
+ if (*argz_len == 0)
+ {
+ free (*argz);
+ *argz = 0;
+ }
+ }
+}