Update Org Header if SRC Block has :tangle no

Question

I organize my init.el in a single org-file as many do. Often times I remove code from my config to test things out. I typically do this by changing the src-block to have a :tangle no setting. In many cases, I forget about it and eventually realize large portions of my config are not tangled.

I'm not quite sure if I need to craft some type of watcher or hook function.

* This is a heading

    #+BEGIN_SRC emacs-lisp
    ...
    #+END_SRC

would become

* TODO This is a heading

    #+BEGIN_SRC emacs-lisp :tangle no
    ...
    #+END_SRC

I was thinking about adding something like this to an on-save hook and then modifying the code blocks section header if :tangle no.

(org-element-map (org-element-parse-buffer) 'src-block #'identity nil nil 'src-block)

But it takes a really long time just to run this function.

Answer 1

On my computer, sections with todo keyword COMMENT are not tangled. That is, change your TODO example to * COMMENT This is a heading. It is also fairly easy to toggle the COMMENT keyword, with C-; keystroke anywhere on or within a heading.