+(defun org-babel-result-hide-spec ()
+ "Hide portions of results lines.
+Add `org-babel-hide-result' as an invisibility spec for hiding
+portions of results lines."
+ (add-to-invisibility-spec '(org-babel-hide-result . t)))
+(add-hook 'org-mode-hook 'org-babel-result-hide-spec)
+
+(defvar org-babel-hide-result-overlays nil
+ "Overlays hiding results.")
+
+(defun org-babel-result-hide-all ()
+ "Fold all results in the current buffer."
+ (interactive)
+ (org-babel-show-result-all)
+ (save-excursion
+ (while (re-search-forward org-babel-result-regexp nil t)
+ (save-excursion (goto-char (match-beginning 0))
+ (org-babel-hide-result-toggle-maybe)))))
+
+(defun org-babel-show-result-all ()
+ "Unfold all results in the current buffer."
+ (mapc 'delete-overlay org-babel-hide-result-overlays)
+ (setq org-babel-hide-result-overlays nil))
+
+;;;###autoload
+(defun org-babel-hide-result-toggle-maybe ()
+ "Toggle visibility of result at point."
+ (interactive)
+ (let ((case-fold-search t))
+ (if (save-excursion
+ (beginning-of-line 1)
+ (looking-at org-babel-result-regexp))
+ (progn (org-babel-hide-result-toggle)
+ t) ;; to signal that we took action
+ nil))) ;; to signal that we did not
+
+(defun org-babel-hide-result-toggle (&optional force)
+ "Toggle the visibility of the current result."
+ (interactive)
+ (save-excursion
+ (beginning-of-line)
+ (if (re-search-forward org-babel-result-regexp nil t)
+ (let ((start (progn (beginning-of-line 2) (- (point) 1)))
+ (end (progn
+ (while (looking-at org-babel-multi-line-header-regexp)
+ (forward-line 1))
+ (goto-char (- (org-babel-result-end) 1)) (point)))
+ ov)
+ (if (memq t (mapcar (lambda (overlay)
+ (eq (overlay-get overlay 'invisible)
+ 'org-babel-hide-result))
+ (overlays-at start)))
+ (if (or (not force) (eq force 'off))
+ (mapc (lambda (ov)
+ (when (member ov org-babel-hide-result-overlays)
+ (setq org-babel-hide-result-overlays
+ (delq ov org-babel-hide-result-overlays)))
+ (when (eq (overlay-get ov 'invisible)
+ 'org-babel-hide-result)
+ (delete-overlay ov)))
+ (overlays-at start)))
+ (setq ov (make-overlay start end))
+ (overlay-put ov 'invisible 'org-babel-hide-result)
+ ;; make the block accessible to isearch
+ (overlay-put
+ ov 'isearch-open-invisible
+ (lambda (ov)
+ (when (member ov org-babel-hide-result-overlays)
+ (setq org-babel-hide-result-overlays
+ (delq ov org-babel-hide-result-overlays)))
+ (when (eq (overlay-get ov 'invisible)
+ 'org-babel-hide-result)
+ (delete-overlay ov))))
+ (push ov org-babel-hide-result-overlays)))
+ (error "Not looking at a result line"))))
+
+;; org-tab-after-check-for-cycling-hook
+(add-hook 'org-tab-first-hook 'org-babel-hide-result-toggle-maybe)
+;; Remove overlays when changing major mode
+(add-hook 'org-mode-hook
+ (lambda () (org-add-hook 'change-major-mode-hook
+ 'org-babel-show-result-all 'append 'local)))
+