Subject: Re: bug#58364: [PATCH] Add new function 'file-name-parent-p'

From: Eli Zaretskii <[email-masked]>
Date: Sat, 08 Oct 2022 09:17:43 +0300

> From: Philip Kaludercic <[email-masked]>
> Date: Fri, 07 Oct 2022 20:23:27 +0000
> 
> Unless I am mistaken, there is no direct function to quickly test if a
> directory is a super-directory of file.  As I have encountered this
> issue more than once the last few days of hacking, I would like to
> propose the below function.

We have file-in-directory-p.  Doesn't that fit the bill?