utf8_normalization
static ssize_t utf8len(const struct unicode_map *um, enum utf8_normalization n,
enum utf8_normalization n, const char *s)
enum utf8_normalization n, unsigned char *hangul, const char *s,
enum utf8_normalization n, unsigned char *hangul, const char *s)
ssize_t utf8nlen(const struct unicode_map *um, enum utf8_normalization n,
enum utf8_normalization n, const char *s, size_t len)
ssize_t utf8nlen(const struct unicode_map *um, enum utf8_normalization n,
enum utf8_normalization n;
enum utf8_normalization n, const char *s, size_t len);