sym.h

unix v7是最后一个广泛发布的研究型UNIX版本

#
/*
 *	UNIX shell
 */


/* symbols for parsing */
#define DOSYM	0405
#define FISYM	0420
#define EFSYM	0422
#define ELSYM	0421
#define INSYM	0412
#define BRSYM	0406
#define KTSYM	0450
#define THSYM	0444
#define ODSYM	0441
#define ESSYM	0442
#define IFSYM	0436
#define FORSYM	0435
#define WHSYM	0433
#define UNSYM	0427
#define CASYM	0417

#define SYMREP	04000
#define ECSYM	(SYMREP|';')
#define ANDFSYM	(SYMREP|'&')
#define ORFSYM	(SYMREP|'|')
#define APPSYM	(SYMREP|'>')
#define DOCSYM	(SYMREP|'<')
#define EOFSYM	02000
#define SYMFLG	0400

/* arg to `cmd' */
#define NLFLG	1
#define MTFLG	2

/* for peekc */
#define MARK	0100000

/* odd chars */
#define DQUOTE	'"'
#define SQUOTE	'`'
#define LITERAL	'\''
#define DOLLAR	'$'
#define ESCAPE	'\\'
#define BRACE	'{'