+ strcpy (s, file);
+
+#if HAVE_DIR
+ if (backup_type != simple)
+ {
+ int highest_backup;
+ size_t dir_len = base_name (s) - s;
+
+ strcpy (s + dir_len, ".");
+ highest_backup = max_backup_version (file + dir_len, s);
+ if (! (backup_type == numbered_existing && highest_backup == 0))
+ {
+ char *numbered_suffix = s + (file_len + backup_suffix_size_max);
+ sprintf (numbered_suffix, ".~%d~", highest_backup + 1);
+ suffix = numbered_suffix;
+ }
+ strcpy (s, file);
+ }
+#endif /* HAVE_DIR */
+
+ addext (s, suffix, '~');