Re: [BUG] org-refile-get-targets wrong-type-argument [9.6.15 (release_9.6.15 @ /Applications/Emacs.app/Contents/Resources/lisp/org/)]

[Serghei Iakovlev]

> My only guess is that some of your Org buffers is not properly
> initialized somehow. Maybe the timer is triggering in the middle of Org
> mode loading or something?

I find it challenging to pinpoint the exact cause of the issue.
However, I can provide some additional context that might help.  The
problem seems to occur when I'm not using my laptop—often at night,
which aligns with the time `run-with-idle-timer' is triggered.
During these moments, my configuration and environment are relatively
static, as the workstation is idle.  I usually leave it in that state
in the evening, and the problem is only noticeable in the morning.

It's worth noting that the issue doesn't happen consistently — not
every night or even every week.  It just occasionally arises, leaving
me puzzled about what might need adjustment or modification to
prevent it.  Given its sporadic nature, I'm at a loss for how to
reproduce it consistently.

There is literally one lead, and it's this code snippet that I just
removed from my configuration:

--8<---------------cut here---------------start------------->8---
diff --git a/init.el b/init.el
index d18e70c..fbb0d62 100644
--- a/init.el
+++ b/init.el
@@ -1685,21 +1685,10 @@
 (define-key my-keyboard-map (kbd "b") #'my/org-move-bookmark-to-notes)

 ;;;;; Org Refile
-(defun my-org-opened-buffer-files ()
-  "Return the list of org files currently opened in Emacs."
-  (delq nil
-        (mapcar (lambda (x)
-                  (if (and (buffer-file-name x)
-                           (string-match "\\.org$"
-                                         (buffer-file-name x)))
-                      (buffer-file-name x)))
-                (buffer-list))))
-
 ;; Refile targets include this file and any file contributing
 ;; to the agenda - up to 4 levels deep.
 (setq org-refile-targets
       '((nil :maxlevel . 4)  ; nil means current buffer
-        (my-org-opened-buffer-files :maxlevel . 4)
         (org-agenda-files :maxlevel . 4)))

 ;; Targets start with the file name allows creating level 1 tasks.
--8<---------------cut here---------------end--------------->8---

It was added as part of one of my experiments, and I apparently don't
need this functionality at all.  So, I can easily remove it to test
this hypothesis. Unfortunately, I don't have any other leads at the
moment.

I would greatly appreciate any advice on how to investigate this
further or understand the root cause of the problem.


-- 
Serghei Iakovlev