How to export headlines, including subheadings, without other contents in org-mode?

Question

In the org-mode documentation regarding export settings, it describes arch as follows.

Configure export of archived trees. Can be set to headline to only process the headline, skipping its contents (org-export-with-archived-trees).

That's almost what I want, but it skips all the contents, including the subheadings. I want those subheadings too (without their contents). Take this example:

#+OPTIONS: arch:headline

* I want to see this :ARCHIVE:
But not this.
** and also this.
And definitely not this.

If I export this file, I want to see this is the only thing that comes through. But I was expecting/hoping and also this to be exported underneath it as well.

How do I make that happen? I tried adding an extra :ARCHIVE: tag to the second level heading, but that does nothing.

Answer 1

You're right, the code that I posted over there can be modified to achieve the behavior you want:

(defun org-remove-contents (backend)
  "Remove contents of headlines with :ARCHIVE: tag."
  (org-map-entries (lambda () 
                     (forward-line)
                     (let ((beg (point)))
                       (outline-next-visible-heading 1)
                       (backward-char)
                       (delete-region beg (point))))
                   "ARCHIVE" tree))

(add-hook 'org-export-before-processing-hook #'org-remove-contents)

Note that you'll need to set arch to t in your per-file #+OPTIONS for this to work:

#+OPTIONS: arch:t