[BUG] org-export-with-broken-links not respected for (org-icalendar-combine-agenda-files t) [9.6.9 ( @ /home/jorge/.config/emacs/elpa/org-9.6.9/)]

["Jorge P. de Morais Neto" <jorge+list@disr.it>]

Hi.  I am on Gentoo.  I wrote the following Elisp function:

--8<---------------cut here---------------start------------->8---
(defun J-org-icalendar-agenda-no-babel (&optional async)
  "Invoke `org-icalendar-combine-agenda-files' without babel, maybe ASYNC.

Also, make broken Org links just get marked as such in the
output, instead of stopping the export with an error."
  (interactive "P")
  (let (org-export-use-babel
        (org-export-with-broken-links 'mark))
      (org-icalendar-combine-agenda-files async)))
--8<---------------cut here---------------end--------------->8---

When I invoke (J-org-icalendar-agenda-no-babel t), the async export
errors out.  I determined that the inferior Emacs process does not see
the let-binding (org-export-with-broken-links 'mark).  Is this intended
behavior?

For now I have worked around this by writing

    (setopt org-export-with-broken-links 'mark)

At the end of the file named by `org-export-async-init-file`.

Regards!

Emacs  : GNU Emacs 29.1.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.38, cairo version 1.17.8)
 of 2023-09-03
Package: Org mode version 9.6.9 ( @ /home/jorge/.config/emacs/elpa/org-9.6.9/)
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