diff --git a/src/cmd/ksh93/sh/fcin.c b/src/cmd/ksh93/sh/fcin.c

index ea6ea6b..08c1f2a 100644

--- a/src/cmd/ksh93/sh/fcin.c

+++ b/src/cmd/ksh93/sh/fcin.c

@@ -150,63 +150,19 @@ extern void fcrestore(Fcin_t *fp)

 	_Fcin = *fp;

 }

-/* for testing purposes with small buffers */

-#if defined(IOBSIZE) && (IOBSIZE < 2*MB_LEN_MAX)

-#   undef MB_LEN_MAX

-#   define MB_LEN_MAX	(IOBSIZE/2)

-#endif

-

-struct Extra

-{

-	unsigned char	buff[2*MB_LEN_MAX];

-	unsigned char	*next;

-};

-

 int _fcmbget(short *len)

 {

-	static struct Extra	extra;

-	register int		i, c, n;

-	if(_Fcin.fcleft)

-	{

-		if((c = mbsize(extra.next)) < 0)

-			c = 1;

-		if((_Fcin.fcleft -= c) <=0)

-		{

-			_Fcin.fcptr = (unsigned char*)fcfirst() - _Fcin.fcleft; 

-			_Fcin.fcleft = 0;

-		}

-		*len = c;

-		if(c==1)

-			c = *extra.next++;

-		else if(c==0)

-			_Fcin.fcleft = 0;

-		else

-			c = mbchar(extra.next);

-		return(c);

-	}

-	switch(*len = mbsize(_Fcin.fcptr))

+	register int		c;

+	switch (*len = mbsize(_Fcin.fcptr))

 	{

-	    case -1:

-		if(_Fcin._fcfile && (n=(_Fcin.fclast-_Fcin.fcptr)) < MB_LEN_MAX)

-		{

-			memcpy(extra.buff, _Fcin.fcptr, n);

-			_Fcin.fcptr = _Fcin.fclast;

-			for(i=n; i < MB_LEN_MAX+n; i++)

-			{

-				if((extra.buff[i] = fcgetc(c))==0)

-					break;

-			}

-			_Fcin.fcleft = n;

-			extra.next = extra.buff;

-			return(fcmbget(len));

-		}

+	case -1:

 		*len = 1;

 		/* fall through */

-	    case 0:

-	    case 1:

+	case 0:

+	case 1:

 		c=fcget();

 		break;

-	    default:

+	default:

 		c = mbchar(_Fcin.fcptr);

 	}

 	return(c);