# Re: \[RFC PATCH 3/4\] submodule: cache superproject gitdir during absorbgitdirs

- From: Junio C Hamano \<hidden\>
- Date: 2021-06-14 06:18:14 
- List: git
- Page: https://ratatoskr.run/git/2021/06/7891855

```text
Emily Shaffer [ref] writes:

> +	test . -ef "$(git -C sub1 config submodule.superprojectGitDir)" &&

Unfortunately "test f1 -ef f2", "test f1 -nt f2", etc. are not part
of POSIX.

When in doubt, check

  https://pubs.opengroup.org/onlinepubs/9699919799/utilities/toc.html

Thanks.
```