xref: /openbsd/usr.bin/less/charset.h (revision 09467b48)
1 /*
2  * Copyright (C) 1984-2012  Mark Nudelman
3  * Modified for use with illumos by Garrett D'Amore.
4  * Copyright 2014 Garrett D'Amore <garrett@damore.org>
5  *
6  * You may distribute under the terms of either the GNU General Public
7  * License or the Less License, as specified in the README file.
8  *
9  * For more information, see the README file.
10  */
11 
12 #define	IS_UTF8_TRAIL(c)	(((c) & 0xC0) == 0x80)
13 #define	IS_UTF8_INVALID(c)	(((c) & 0xFE) == 0xFE)
14 #define	IS_UTF8_LEAD(c)		(((c) & 0xC0) == 0xC0 && !IS_UTF8_INVALID(c))
15