Re: org-attach-sync uses directory-empty-p (new in Emacs 28)

[Arthur Miller]

Kyle Meyer <kyle@kyleam.com> writes:

> Hi Marco,
>
> In 61e083732 (org-attach: Possibly delete empty attach directory,
> 2021-07-09), you added a call to directory-empty-p.  This function was
> introduced in Emacs's 0806075520 (Add directory-empty-p and new argument
> COUNT for directory-files-*, 2020-11-02) and hasn't yet made it into a
> release.
>
> Could you update org-attach-sync to avoid using directory-empty-p (e.g.,
> by inlining it or by adding a compatibility alias)?
>
> Thanks.

Can this help:

#+begin_src emacs-lisp

(when (version< emacs-version "28")
  (defun directory-empty-p (file-name)
    "Check if a directory contains any other files then dot-files"
    (when (file-directory-p file-name)
      (null (directory-files file-name nil
                             directory-files-no-dot-files-regexp t)))))

#+end_src