Thorsten Jolitz <tjol...@gmail.com> writes:
> Heikki Lehvaslaiho <heikki.lehvasla...@gmail.com> writes:
>
>> Unless someone beats me to it, I'll write it one day. :)
>
> What about:
>
> #+begin_src emacs-lisp
> (defun tj/toggle-example-and-comment-blocks ()
> "Toggle example and comment blocks in current buffer."
> (interactive)
> (org-block-map
> (lambda ()
> (org-mark-element)
> (when (use-region-p)
> (let ((beg (region-beginning))
> (end (region-end)))
> (cond
> ((save-excursion
> (re-search-forward "#\\+begin_comment"
> (line-end-position) 'NOERROR))
> (replace-string "#+begin_comment" "#+begin_example"
> nil beg end)
> (replace-string "#+end_comment" "#+end_example"
> nil beg end))
> ((save-excursion
> (re-search-forward "#\\+begin_example"
> (line-end-position) 'NOERROR))
> (replace-string "#+begin_example" "#+begin_comment"
> nil beg end)
> (replace-string "#+end_example" "#+end_comment"
> nil beg end))
> (t nil))
> (deactivate-mark))))))
> #+end_src
I should have read the help string of `replace-string' till the end,
because
,-------------------------------------------------------------------
| This function is usually the wrong thing to use in a Lisp program.
| What you probably want is a loop like this:
| (while (search-forward FROM-STRING nil t)
| (replace-match TO-STRING nil t))
| which will run faster and will not set the mark or print anything.
`-------------------------------------------------------------------
Here is the corrected version:
#+begin_src emacs-lisp
(defun tj/toggle-example-and-comment-blocks ()
"Toggle example and comment blocks in current buffer."
(interactive)
(org-block-map
(lambda ()
(org-mark-element)
(when (use-region-p)
(let ((end (region-end)))
(cond
((save-excursion
(re-search-forward "#\\+begin_comment"
(line-end-position) 'NOERROR))
(while (search-forward "#+begin_comment"
(line-end-position) t)
(replace-match "#+begin_example" nil t))
(while (search-forward "#+end_comment" end t)
(replace-match "#+end_example" nil t)))
((save-excursion
(re-search-forward "#\\+begin_example"
(line-end-position) 'NOERROR))
(while (search-forward "#+begin_example"
(line-end-position) t)
(replace-match "#+begin_comment" nil t))
(while (search-forward "#+end_example" end t)
(replace-match "#+end_comment" nil t)))
(t nil))
(deactivate-mark))))))
#+end_src
--
cheers,
Thorsten
