/*	$NetBSD: log.h,v 1.2 2013/11/22 15:52:05 christos Exp $	*/
/*-
 * Copyright (c) 1992, 1993, 1994
 *	The Regents of the University of California.  All rights reserved.
 * Copyright (c) 1992, 1993, 1994, 1995, 1996
 *	Keith Bostic.  All rights reserved.
 *
 * See the LICENSE file for redistribution information.
 *
 *	Id: log.h,v 10.4 2002/06/08 21:00:33 skimo Exp  (Berkeley) Date: 2002/06/08 21:00:33 
 */

#define	LOG_NOTYPE		0
#define	LOG_CURSOR_INIT		2
#define	LOG_CURSOR_END		3
#define	LOG_LINE_APPEND_B	4
#define	LOG_LINE_APPEND_F	5
#define	LOG_LINE_DELETE_B	6
#define	LOG_LINE_DELETE_F	7
#define	LOG_LINE_RESET_B	8
#define	LOG_LINE_RESET_F	9
#define	LOG_MARK		10	

typedef enum { UNDO_FORWARD, UNDO_BACKWARD, UNDO_SETLINE } undo_t;

struct _log_state {
	int	didop;
	MARK	pos;
	undo_t	undo;
};