* of "-a" causing problems (not possible in the above example,
  * but get used to it in scripting!).
  */
+#include "builtin.h"
 #include "cache.h"
 #include "strbuf.h"
 #include "quote.h"
                if (!strcmp(arg, "-u") || !strcmp(arg, "--index")) {
                        state.refresh_cache = 1;
                        if (newfd < 0)
-                               newfd = hold_lock_file_for_update
-                                       (&lock_file, get_index_file(), 1);
-                       if (newfd < 0)
-                               die("cannot open index.lock file.");
+                               newfd = hold_locked_index(&lock_file, 1);
                        continue;
                }
                if (!strcmp(arg, "-z")) {
 
        if (0 <= newfd &&
            (write_cache(newfd, active_cache, active_nr) ||
-            close(newfd) || commit_lock_file(&lock_file)))
+            close(newfd) || commit_locked_index(&lock_file)))
                die("Unable to write new index file");
        return 0;
 }