ref: 6a197909c4b1c3a9ffda2cccf5f924eefa8a5a75
dir: /sys/src/cmd/tcs/gb.h/
/* gb ranges from a1a1 to f7fe inclusive we use a kuten-like mapping the above range to 101-8794 */ #define GBMAX 8795 extern long tabgb[GBMAX]; /* runes indexed by gb ordinal */