_uni_to_utf8
utf8 = _uni_to_utf8(unicode);
extern hcode_type _uni_to_utf8(hcode_type unicode);
utf_code = _uni_to_utf8(unicode);
utf_code = _uni_to_utf8(unicode);
utf_code = _uni_to_utf8(node_ptr->utf8);
utf8 = _uni_to_utf8(unicode);
extern hcode_type _uni_to_utf8(hcode_type unicode);