/*___________________________________________________________________________*
   )()(			  DalekenMUD 1.12 (C) 2000			)()(
   `]['		       by Martin Thomson, Lee Brooks,			`]['
    ||		       Ken Herbert and David Jacques			 ||
    || ----------------------------------------------------------------- ||
    || Envy Diku Mud improvements copyright (C) 1994 by Michael Quan,	 ||
    || David Love, Guilherme 'Willie' Arnold, and Mitchell Tse.		 ||
    || Merc Diku Mud improvments copyright (C) 1992, 1993 by Michael	 ||
    || Chastain, Michael Quan, and Mitchell Tse.			 ||
    || Original Diku Mud copyright (C) 1990, 1991			 ||
    || by Sebastian Hammer, Michael Seifert, Hans Henrik St{rfeldt,	 ||
    || Tom Madsen, and Katja Nyboe.					 ||
    || ----------------------------------------------------------------- ||
    || Any use of this software must follow the licenses of the		 ||
    || creators.  Much time and thought has gone into this software and	 ||
    || you are benefitting. We hope that you share your changes too.	 ||
    || What goes around, comes around.					 ||
    || ----------------------------------------------------------------- ||
    ||			          regexp.h				 ||
    || The regular expression code, as came with MudOS lpMUD.		 ||
 *_/<>\_________________________________________________________________/<>\_*/


/*
 * Definitions etc. for regexp(3) routines.
 *
 * Caveat:  this is V8 regexp(3) [actually, a reimplementation thereof],
 * not the System V one.
 */

#define NSUBEXP  10
typedef struct regexp {
    char *startp[NSUBEXP];
    char *endp[NSUBEXP];
    char regstart;	/* Internal use only. */
    char reganch;	/* Internal use only. */
    char *regmust;	/* Internal use only. */
    int regmlen;	/* Internal use only. */
    char program[1];	/* Unwarranted chumminess with compiler. */
} regexp;


/*
 * The first byte of the regexp internal "program" is actually this magic
 * number; the start node begins in the second byte.
 */
#define	MAGIC	0234

regexp *regcomp	args( ( char *exp, int excompat ) );
int regexec	args( ( register regexp *prog, register char *string ) );
char *regsub	args( ( regexp *prog, char *source, char *dest, int n ) );
void regerror	args( ( const char *s ) );

extern const char *regexp_error;

#define FREE( x )	free_string( x )
#define DXALLOC( x, tag, desc )