printf("commit %s\nmark :%d\n%.*s\n%.*s\ndata %u\n%s",
(const char *)commit->util, last_idnum,
(int)(author_end - author), author,
printf("commit %s\nmark :%d\n%.*s\n%.*s\ndata %u\n%s",
(const char *)commit->util, last_idnum,
(int)(author_end - author), author,