Swiper: Error in post-command-hook (ivy--queue-exhibit): (wrong-type-argument number-or-marker-p nil) (with org-mode?)

[stefan2904]

Since a few weeks, I get the following error when using swiper (after a few keystrokes in the swiper minibuffer):

Error in post-command-hook (ivy--queue-exhibit): (wrong-type-argument number-or-marker-p nil)

It seems that this only happens in buffers with org-mode enabled, but I am not 100% sure.
As this does not trigger debug-on-error, I am not sure how to best debug it further.

My init.el only contains the following:

(use-package ivy
  :ensure t)
(use-package swiper
  :ensure t)

(require 'ivy)

;(ivy-mode 1)

(setq ivy-use-virtual-buffers t)
;(setq ivy-count-format "(%d/%d) ")
;(setq enable-recursive-minibuffers t)


(global-set-key "\C-s" 'swiper)

• GNU Emacs 28.1
• counsel 20240229.1509
• ivy 20240214.2118
• swiper 20240214.2118
• Org mode version 9.7-pre (release_9.6.21-1298-gb338a9)

[basil-conto]

Error in post-command-hook (ivy--queue-exhibit): (wrong-type-argument number-or-marker-p nil)

It seems that this only happens in buffers with org-mode enabled, but I am not 100% sure. As this does not trigger debug-on-error, I am not sure how to best debug it further.

Yes, these can be difficult to debug, especially when it's not always reproducible. One of the simplest options is to copy the definition of ivy--insert-minibuffer, sprinkle some print-debugging calls like (message ">>> n") for different values of n among the function's lines, and reevaluate the function (this will overwrite its previous definition). That might shed more light on which part of the ivy--exhibit hook is failing. It could be that old-mark is nil, for example.