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December 25, 2025 ยท View on GitHub

#+title: org-auto-tangle #+author: Yilkal Argaw

This package (i.e org-auto-tangle) is a very simple emacs package that allows you to automatically tangle org files on save. This is done by adding the option #+auto_tangle: t in your org file.

The tangling process happens asynchronously so it will not block your emacs session.

  • USAGE

Simply require the package in you emacs init and hook it into org-mode.

#+begin_src emacs-lisp

(require 'org-auto-tangle)

(add-hook 'org-src-mode-hook 'org-auto-tangle-mode)

#+end_src

or you can use use-package

#+begin_src emacs-lisp (use-package org-auto-tangle :load-path "site-lisp/org-auto-tangle/" ;; this line is necessary only if you cloned the repo in your site-lisp directory :defer t :hook (org-src-mode . org-auto-tangle-mode)) #+end_src

If the minor mode is on, it will try to automatically tangle your org files if they contain a non nil value for the #+auto_tangle: option.

You can configure auto-tangle as the default behavior for all org buffers by setting the org-auto-tangle-default variable to t. In this case, you can disable it for some buffers by setting the #+auto_tangle: option to nil.

The #+auto_tangle: option may also be used to specify variables that should be preserved in the asynchronous tangling process. For example, if you have installed a newer version of org-mode or additional Babel processors, using

#+begin_src org #+auto_tangle: vars:load-path #+end_src

will be sure that they are available during tangling. The vars option takes a colon-separated list so multiple variables may be specified

#+begin_src org #+auto_tangle: vars:calendar-longitude:calendar-latitude:calendar-location-name #+end_src

It is also possible to disable auto-tangling by adding the nil option to the line without removing any vars list.

#+begin_src org #+auto_tangle: vars:load-path nil #+end_src

Each listed file in =org-auto-tangle-with-files= will be loaded inside the asynchronous Emacs process before tangling begins. This is useful for setting up additional libraries, paths, or environment variables.

#+begin_src emacs-lisp (setq org-auto-tangle-with-files '("/.emacs.d/my-env.el" "/.emacs.d/project-hooks.el")) #+end_src

  • Babel Auto Tangle Safelist Add a list of files to the safelist to autotangle with noweb evaluation #+begin_src emacs-lisp (setq org-auto-tangle-babel-safelist '( "/system.org" "/test.org" )) #+end_src

  • License

This package (i.e. org-auto-tangle) is licensed under the the 2-Clause BSD License.