bool utf8_is_printable_newline(const char* str, size_t length, bool newline) _pure_;
_pure_ static inline bool utf8_is_printable(const char* str, size_t length) {
bool utf8_is_printable_newline(const char* str, size_t length, bool newline) _pure_;
_pure_ static inline bool utf8_is_printable(const char* str, size_t length) {