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/* variables */

extern int debugging, braces_open;
extern char * yytext;
extern int yylineno, yyleng;
extern FILE *yyin, *yyout;


/* functions */

extern void lex_init(void);
extern char * input_filename;
extern int yyparse(void);
extern void *mm_alloc(size_t), *mm_realloc(void *, size_t);