Replace some homegrown string-functions with standard-<string.h>-macros.

Reported by Joseph Myers <jsm28@cam.ac.uk> in PR 6028.

Author: hubertf

games/adventure/extern.h

@@ -1,4 +1,4 @@
-/*	$NetBSD: extern.h,v 1.4 1998/08/24 22:07:37 hubertf Exp $	*/
+/*	$NetBSD: extern.h,v 1.5 1998/08/24 22:26:23 hubertf Exp $	*/
 
 /*
  * Copyright (c) 1997 Christos Zoulas.  All rights reserved.
@@ -29,6 +29,8 @@
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <string.h>
+
 /* crc.c */
 void crc_start __P((void));
 unsigned long crc __P((char *, int));
@@ -116,9 +118,12 @@ int put __P((int, int, int));
 void carry __P((int, int));
 void drop __P((int, int));
 int vocab __P((char *, int, int));
-void copystr __P((char *, char *));
-int weq __P((char *, char *));
-int length __P((char *));
+
+/* These three used to be functions in vocab.c */
+#define copystr(src, dest)	strcpy((dest), (src))
+#define weq(str1, str2)		(!strncmp((str1), (str2), 5))
+#define length(str)		(strlen((str)) + 1)
+
 void prht __P((void));
 
 /* wizard.c */

games/adventure/vocab.c

@@ -1,4 +1,4 @@
-/*	$NetBSD: vocab.c,v 1.5 1997/10/11 01:53:38 lukem Exp $	*/
+/*	$NetBSD: vocab.c,v 1.6 1998/08/24 22:26:23 hubertf Exp $	*/
 
 /*-
  * Copyright (c) 1991, 1993
@@ -43,7 +43,7 @@
 #if 0
 static char sccsid[] = "@(#)vocab.c	8.1 (Berkeley) 5/31/93";
 #else
-__RCSID("$NetBSD: vocab.c,v 1.5 1997/10/11 01:53:38 lukem Exp $");
+__RCSID("$NetBSD: vocab.c,v 1.6 1998/08/24 22:26:23 hubertf Exp $");
 #endif
 #endif				/* not lint */
 
@@ -201,44 +201,6 @@ vocab(word, type, value)	/* look up or store a word      */
 	}
 }
 
-void
-copystr(w1, w2)			/* copy one string to another   */
-	char   *w1, *w2;
-{
-	char   *s, *t;
-	for (s = w1, t = w2; *s;)
-		*t++ = *s++;
-	*t = 0;
-}
-
-int
-weq(w1, w2)			/* compare words                */
-	char   *w1, *w2;	/* w1 is user, w2 is system     */
-{
-	char   *s, *t;
-	int     i;
-	s = w1;
-	t = w2;
-	for (i = 0; i < 5; i++) {	/* compare at most 5 chars      */
-		if (*t == 0 && *s == 0)
-			return (TRUE);
-		if (*s++ != *t++)
-			return (FALSE);
-	}
-	return (TRUE);
-}
-
-int
-length(str)			/* includes 0 at end            */
-	char   *str;
-{
-	char   *s;
-	int     n;
-	for (n = 0, s = str; *s++;)
-		n++;
-	return (n + 1);
-}
-
 void
 prht()
 {				/* print hash table             */