Add functions for org

These aren't bound or implemented but they're here in case I want them.

lisp/+org.el

@@ -604,5 +604,50 @@ and POST-PROCESS are passed to `org-export-to-file'."
 ;;; go forward and backward in the tree, ~ cleanly ~
 ;; https://stackoverflow.com/a/25201697/10756297
 
+(defun +org-show-next-heading-tidily ()
+  "Show next entry, keeping other entries closed."
+  (interactive)
+  (if (save-excursion (end-of-line) (outline-invisible-p))
+      (progn (org-show-entry) (show-children))
+    (outline-next-heading)
+    (unless (and (bolp) (org-on-heading-p))
+      (org-up-heading-safe)
+      (hide-subtree)
+      (user-error "Boundary reached"))
+    (org-overview)
+    (org-reveal t)
+    (org-show-entry)
+    (recenter-top-bottom)
+    (show-children)
+    (recenter-top-bottom 1)))
+
+(defun +org-show-previous-heading-tidily ()
+  "Show previous entry, keeping other entries closed."
+  (interactive)
+  (let ((pos (point)))
+    (outline-previous-heading)
+    (unless (and (< (point) pos) (bolp) (org-on-heading-p))
+      (goto-char pos)
+      (hide-subtree)
+      (user-error "Boundary reached"))
+    (org-overview)
+    (org-reveal t)
+    (org-show-entry)
+    (recenter-top-bottom)
+    (show-children)
+    (recenter-top-bottom 1)))
+
+;;; Make `org-flag-region' (which folds subtrees) recognize 
+;; [[https://teddit.net/r/orgmode/comments/u3du0v/how_to_make_orgcycle_respect_and_always_show_the/][from u/yantar92]]
+
+;; (advice-add 'org-flag-region :around #'org-flag-region@unfold-page-breaks)
+(defun org-flag-region@unfold-page-breaks (oldfun from to flag &optional spec)
+  "ADVICE to unfold all the page-break lines inside a folded region."
+  (funcall oldfun from to flag spec)
+  (when (and flag (not (eq 'visible spec)))
+    (org-with-point-at from
+      (while (re-search-forward "\n\u000c\n" to t)
+        (org-flag-region (match-beginning 0) (match-end 0) t 'visible)))))
+
 (provide '+org)
 ;;; +org.el ends here