How to strike-through or un-strike-through a region or line in org-mode?

Question

Given a region or line of text in org-mode I would like to call a function that either strikes-through the region or removes the strike-through of the region or line if strike-through is already present.

C-c C-x C-f + does not seem to do the trick, as for proper strike-through display in my org-mode version, each line must be wrapped with "+" individually.

How can I define a function that works like comment-or-uncomment-region for strike-through in org-mode?

Answer 1

If you're still looking for the solution,

I've made a partial solution for this

check this out (copied from https://emacs.stackexchange.com/a/45848/18252):

 (defun strike-through-for-org-mode ()
      (interactive)
      (beginning-of-line)  
      (save-excursion     
        (if (string-prefix-p "*" (thing-at-point 'line t))  
            (progn
              (setq go_char (string-match "[ ]" (thing-at-point 'line t)))  
              (forward-char (+ go_char 1))
              (insert "+")   
              (end-of-line)  
              (insert "+")   
              )
          (if (string-match "[^ ]" (thing-at-point 'line t))  
              (progn
                (setq go_char (string-match "[^ ]" (thing-at-point 'line t)))  
                (forward-char (+ go_char 2))  
                (insert "+")   
                (end-of-line)  
                (insert "+")  
                )
            (message "[-] Not Proper Position!")
            )
          )
        )
      )

---

(defun strike-through-for-org-mode-undo ()
  (interactive)
  (beginning-of-line) 
  (save-excursion     
    (if (string-match "[+]" (thing-at-point 'line t)) 
        (progn
          (setq go_char (string-match "[+]" (thing-at-point 'line t)))  
          (forward-char go_char) 
          (delete-char 1)  
          (end-of-line)
          (delete-char -1) 
          )
      (message "[-] Not Proper Position!")
      )
    )
    )

Answer 2

For visitors who use Evil: you can use the evil-surround minor mode to deal with various kinds of markup, including plus signs for strike-through. Evil makes it quite convenient to work on the level of the visual-mode selection, lines or words. (I'm handling one line at a time, so not sure yet if there's support for identical normal-mode operations on multiple lines.)

However, to delete the plus-sign markers, you'll need to add them to Evil as text objects.

Answer 3

This post asked the question long time ago, but as of today and speaking of org-mode version 9.5.4, the strikethrough feature has already been integrated into org-emphasize function. See f1+v describe variable and look for org-emphasize-alist you are going to see all the markings and strikethrough can be invoked by pressing + after the C-c C-x C-f keystroke (which invokes the org-emphasize function).