Function encode_unknown

src/utf8.c:21–24

    4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0, 0, 0, 0};

static void encode_unknown(cmark_strbuf *buf) {
  static const uint8_t repl[] = {239, 191, 189};
  cmark_strbuf_put(buf, repl, 3);
}

static int utf8proc_charlen(const uint8_t *str, bufsize_t str_len) {
  int length, i;