bug#81513: 30.2; Maybe unneeded test in dired-create-files

> From: Thierry Volpiatto <[email protected]>
> Date: Wed, 29 Jul 2026 04:54:25 +0000
> 
> 
> In dired-create-files, we have this code:
> 
>         (let ((destname (file-name-directory to)))
>           (when (and (file-directory-p from)
>                      (file-directory-p to)
>                      (eq file-creator 'dired-copy-file))
>             (setq to destname))
>           ;; If DESTNAME is a subdirectory of FROM, not a symlink,
>           ;; and the method in use is copying, signal an error.
>           (and (eq t (file-attribute-type (file-attributes destname)))
>                (eq file-creator 'dired-copy-file)
>                (file-in-directory-p destname from)
>                (error "Cannot copy `%s' into its subdirectory `%s'"
>         	      from to)))
> 
> Is the test (eq t (file-attribute-type (file-attributes destname)))
> really needed?
> AFAIU destname is always a directory, isn't it?

Doesn't the comment explain the reason?  DESTNAME could be a symlink,
couldn't it be?