-/* XXX I didn't check the encoding range of big5+. This is standard big5. */
-#define is_big5_los(lo) (0x40 <= (lo) && (lo) <= 0x7E) /* standard */
-#define is_big5_lox(lo) (0x80 <= (lo) && (lo) <= 0xFE) /* extended */
-#define is_big5_hi(hi) (0x81 <= (hi) && (hi) <= 0xFE)
-#define is_big5(hi,lo) (is_big5_hi(hi) && (is_big5_los(lo) || is_big5_lox(lo)))
-