+/*
+ * Remove empty parents, but spare refs/ and immediate subdirs.
+ * Note: munges *name.
+ */
+static void try_remove_empty_parents(char *name)
+{
+ char *p, *q;
+ int i;
+ p = name;
+ for (i = 0; i < 2; i++) { /* refs/{heads,tags,...}/ */
+ while (*p && *p != '/')
+ p++;
+ /* tolerate duplicate slashes; see check_ref_format() */
+ while (*p == '/')
+ p++;
+ }
+ for (q = p; *q; q++)
+ ;
+ while (1) {
+ while (q > p && *q != '/')
+ q--;
+ while (q > p && *(q-1) == '/')
+ q--;
+ if (q == p)
+ break;
+ *q = '\0';
+ if (rmdir(git_path("%s", name)))
+ break;
+ }
+}
+