2 * Copyright (c) 1988 Mark Nudleman
3 * Copyright (c) 1988, 1993
4 * The Regents of the University of California. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 * must display the following acknowledgement:
16 * This product includes software developed by the University of
17 * California, Berkeley and its contributors.
18 * 4. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * @(#)less.h 8.1 (Berkeley) 6/6/93
39 #define NULL_POSITION ((off_t)(-1))
42 #define READ_INTR (-2)
44 /* Special chars used to tell put_line() to do something special */
45 #define UL_CHAR '\201' /* Enter underline mode */
46 #define UE_CHAR '\202' /* Exit underline mode */
47 #define BO_CHAR '\203' /* Enter boldface mode */
48 #define BE_CHAR '\204' /* Exit boldface mode */
50 #define CONTROL_CHAR(c) (iscntrl(c))
51 #define CARAT_CHAR(c) ((c == '\177') ? '?' : (c | 0100))
54 #define TOP_PLUS_ONE (1)
56 #define BOTTOM_PLUS_ONE (-2)
61 #define A_AGAIN_SEARCH 1
77 #define A_NEXT_FILE 17
80 #define A_PREV_FILE 20
87 #define A_FILE_LIST 27