*/
 
 #include "cache.h"
+#include "dir.h"
 #include "builtin.h"
 #include "parse-options.h"
 
                const char *cp;
                int bad = 0;
 
-               if ((ent->d_name[0] == '.') &&
-                   (ent->d_name[1] == 0 ||
-                    ((ent->d_name[1] == '.') && (ent->d_name[2] == 0))))
+               if (is_dot_or_dotdot(ent->d_name))
                        continue;
                for (cp = ent->d_name; *cp; cp++) {
                        int ch = *cp;
                OPT_END(),
        };
 
-       argc = parse_options(argc, argv, opts, count_objects_usage, 0);
+       argc = parse_options(argc, argv, prefix, opts, count_objects_usage, 0);
        /* we do not take arguments other than flags for now */
        if (argc)
                usage_with_options(count_objects_usage, opts);