How do I toggle soft-wrapped lines in org-mode?

Question

I want to be able to toggle soft-wrapped lines in org-mode. My .emacs file has this code:

;;;;;;;;;;;;;;
;; Org Mode ;;
;;;;;;;;;;;;;;

(global-set-key "\C-cl" 'org-store-link)
(global-set-key "\C-ca" 'org-agenda)
(global-set-key "\C-cc" 'org-capture)
(global-set-key "\C-cb" 'org-iswitchb)

;; Start-up with soft-wrap enabled
(setq org-startup-truncated nil)  ; This works
;; Toggle soft-wrap with super-q
(define-key org-mode-map "s-q" 'toggle-truncate-lines)  ; This doesn't

I would like to map it to something like super-q or F7. Is there something wrong with my syntax? Neither works.

Answer 1

To avoid spelling mistakes you should try to use the kbd function for writing the keybinding. My setting therefor looks like:

(global-set-key (kbd "C-x p") 'toggle-truncate-lines)

because I use that keybinding globally (e.g. also in any prog-mode). For your org-mode-map -only change it would look like this:

(define-key org-mode-map (kbd "s-p") 'toggle-truncate-lines)

otherwise you will have to consider regular expression syntax.

Therefor see https://www.gnu.org/software/emacs/manual/html_node/elisp/Key-Binding-Commands.html:

(global-set-key (kbd "C-x C-\\") 'next-line)
(global-set-key [?\C-x ?\C-\\] 'next-line)
(global-set-key [(control ?x) (control ?\\)] 'next-line)

Answer 2

A bit more manual per file but you can do do:

# -*- truncate-lines: nil -*-

At the top of the org-mode file.

Answer 3

If you want soft-warp applied to all org files on permanent basis, just put the code below in your init file.

(add-hook 'org-mode-hook
      (lambda ()
        (toggle-truncate-lines nil) ))