Renders emacs unusable on empty directories `(wrong-type-argument wholenump nil)`

[taoufik07]

Expected behavior

Emacs should start normally without any blocking errors.

Actual behavior

When opening Emacs in a newly created directory, I encounter (wrong-type-argument wholenump nil) on initialization and with every key binding, which renders the application unusable.

Works fine when Initializing an empty repo .git.

Steps to reproduce the problem

1. Create new dir mkdir poc && cd $_
2. Open emacs emacs -nw

(use-package 
  projectile
  :ensure t
  :init
  (projectile-mode)
  :bind ("M-p" . 'projectile-command-map)
  :custom ((setq projectile-enable-caching t)
	   (setq projectile-switch-project-action 'projectile-dired)
	   (setq projectile-completion-system 'default)))

Environment & Version information

• Projectile: 20240901.1554
• Emacs: GNU Emacs 29.4 (aarch64-apple-darwin)
• OS: macOS 14.6.1

[taoufik07]

I suspect it to be caused/triggered by the following commit https://github.com/bbatsov/projectile/commit/3c92d28c056c3553f83a513a35502b4547d29319

For now removing the buffer-list-update-hook #'projectile-track-known-projects-find-file-hook hook, seems to do the trick:

(use-package
  projectile
  :ensure t
  :init
  (projectile-mode)
  (remove-hook 'buffer-list-update-hook #'projectile-track-known-projects-find-file-hook)
  ...

[bbatsov]

@jtamagnan Can you please take a look in case your change is really the culprit.

@taoufik07 Can you post here the full backtrace? That would make your problem easier to debug.

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[bbatsov]

Fixed by #1910.