walk_dir
root = walk_dir(argv[1], ".", NULL, NULL, fsoptions.replace,
root = walk_dir(argv[i], ".", NULL, root, fsoptions.replace,
fsnode * walk_dir(const char *, const char *, fsnode *, fsnode *, int,
cur->child = walk_dir(root, rp, cur,
cur->child = walk_dir(root, rp, cur, NULL,
walk_dir(&v, sys_paths, hash);
walk_dir(&v, search_path, hash);