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?
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).
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!") ) ) ) 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.
+atregion-beginningandregion-endwhen the region is active; and, for it to be a little smart as to whether+indicators are already present. This does not need to beorg-modespecific and can be done with just a few lines of code, but there may be an existing function. Inasmuch asorg-modeis under constant development, I tend not to answer a moving target ... Anorg-modeguru familiar with the latest build and previous builds should be along shortly ...org-modespecific. However, it's important that each line in the region is enclosed by+as only then strike-through properly renders inorg-mode.org-emphasizeis quite naive in orgmode 9.1.6. Please note that the line-wise strike-through version is also not working in all circumstances. It breaks headlines and tables within the region to be striken-through.