diff --git a/bin/sh/mystring.c b/bin/sh/mystring.c
index 53d703d55b59..67617ec04876 100644
--- a/bin/sh/mystring.c
+++ b/bin/sh/mystring.c
@@ -1,129 +1,110 @@
 /*-
  * Copyright (c) 1991, 1993
  *	The Regents of the University of California.  All rights reserved.
  *
  * This code is derived from software contributed to Berkeley by
  * Kenneth Almquist.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  * 4. Neither the name of the University nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */
 
 #ifndef lint
 #if 0
 static char sccsid[] = "@(#)mystring.c	8.2 (Berkeley) 5/4/95";
 #endif
 #endif /* not lint */
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD$");
 
 /*
  * String functions.
  *
  *	equal(s1, s2)		Return true if strings are equal.
  *	scopy(from, to)		Copy a string.
- *	scopyn(from, to, n)	Like scopy, but checks for overflow.
  *	number(s)		Convert a string of digits to an integer.
  *	is_number(s)		Return true if s is a string of digits.
  */
 
 #include <stdlib.h>
 #include "shell.h"
 #include "syntax.h"
 #include "error.h"
 #include "mystring.h"
 
 
 char nullstr[1];		/* zero length string */
 
 /*
  * equal - #defined in mystring.h
  */
 
 /*
  * scopy - #defined in mystring.h
  */
 
 
-/*
- * scopyn - copy a string from "from" to "to", truncating the string
- *		if necessary.  "To" is always nul terminated, even if
- *		truncation is performed.  "Size" is the size of "to".
- */
-
-void
-scopyn(const char *from, char *to, int size)
-{
-
-	while (--size > 0) {
-		if ((*to++ = *from++) == '\0')
-			return;
-	}
-	*to = '\0';
-}
-
-
 /*
  * prefix -- see if pfx is a prefix of string.
  */
 
 int
 prefix(const char *pfx, const char *string)
 {
 	while (*pfx) {
 		if (*pfx++ != *string++)
 			return 0;
 	}
 	return 1;
 }
 
 
 /*
  * Convert a string of digits to an integer, printing an error message on
  * failure.
  */
 
 int
 number(const char *s)
 {
 	if (! is_number(s))
 		error("Illegal number: %s", s);
 	return atoi(s);
 }
 
 
 
 /*
  * Check for a valid number.  This should be elsewhere.
  */
 
 int
 is_number(const char *p)
 {
 	do {
 		if (! is_digit(*p))
 			return 0;
 	} while (*++p != '\0');
 	return 1;
 }
diff --git a/bin/sh/mystring.h b/bin/sh/mystring.h
index 1b27a1b008a8..5a6e3d8a4001 100644
--- a/bin/sh/mystring.h
+++ b/bin/sh/mystring.h
@@ -1,44 +1,43 @@
 /*-
  * Copyright (c) 1991, 1993
  *	The Regents of the University of California.  All rights reserved.
  *
  * This code is derived from software contributed to Berkeley by
  * Kenneth Almquist.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  * 4. Neither the name of the University nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
  *	@(#)mystring.h	8.2 (Berkeley) 5/4/95
  * $FreeBSD$
  */
 
 #include <string.h>
 
-void scopyn(const char *, char *, int);
 int prefix(const char *, const char *);
 int number(const char *);
 int is_number(const char *);
 
 #define equal(s1, s2)	(strcmp(s1, s2) == 0)
 #define scopy(s1, s2)	((void)strcpy(s2, s1))