typedef union {
WORD_DESC *word;
int number;
WORD_LIST *word_list;
COMMAND *command;
REDIRECT *redirect;
ELEMENT element;
PATTERN_LIST *pattern;
} YYSTYPE;
#define IF 257
#define THEN 258
#define ELSE 259
#define ELIF 260
#define FI 261
#define CASE 262
#define ESAC 263
#define FOR 264
#define SELECT 265
#define WHILE 266
#define UNTIL 267
#define DO 268
#define DONE 269
#define FUNCTION 270
#define COND_START 271
#define COND_END 272
#define COND_ERROR 273
#define IN 274
#define BANG 275
#define TIME 276
#define TIMEOPT 277
#define WORD 278
#define ASSIGNMENT_WORD 279
#define NUMBER 280
#define ARITH_CMD 281
#define ARITH_FOR_EXPRS 282
#define COND_CMD 283
#define AND_AND 284
#define OR_OR 285
#define GREATER_GREATER 286
#define LESS_LESS 287
#define LESS_AND 288
#define LESS_LESS_LESS 289
#define GREATER_AND 290
#define SEMI_SEMI 291
#define LESS_LESS_MINUS 292
#define AND_GREATER 293
#define LESS_GREATER 294
#define GREATER_BAR 295
#define yacc_EOF 296
extern YYSTYPE yylval;