typedef struct _Strip {
    char *s;
    unsigned int hashix;
    struct _Strip *next;
} *Strip;
#define HASHSIZE 5003 
#define hfcase_eq(a, b) ((a)->hashix == (b)->hashix) 
#define hcase_eq(a, b) (((a)->hashix == (b)->hashix) ? case_eq((a)->s, (b)->s) : (0)) 
#define strip2str(x) ((x) ? (x)->s : "") 
#define strip2hash(x) ((x) ? (x)->hashix : 0) 
 Strip str2strip(const char *s);
 Strip strn2strip(const char *s, int n);
 Strip stru2strip(const char *s);
 Strip strnu2strip(const char *s, int n);