__must_check __malloc char *adu_strdup(const char *s);
__must_check __malloc char *adu_strcat(char *a, const char *b);
__must_check __malloc __printf_1_2 char *make_message(const char *fmt, ...);
+__must_check __malloc char *absolute_path(const char *path);
__must_check int atoi64(const char *str, int64_t *result);
__must_check unsigned split_args(char *args, char *** const argv_ptr, const char *delim);
int create_argv(const char *line, char ***result);