From ee0c0ddab506f33468d926b991e93723e3e102e2 Mon Sep 17 00:00:00 2001
From: jao <jao@gnu.org>
Date: Wed, 15 Oct 2025 19:22:30 +0100
Subject: org-focus: redisplay children

---
 lib/doc/jao-org-focus.el | 48 +++++++++++++++++++++++++++++++++++-------------
 1 file changed, 35 insertions(+), 13 deletions(-)

(limited to 'lib/doc/jao-org-focus.el')

diff --git a/lib/doc/jao-org-focus.el b/lib/doc/jao-org-focus.el
index 8f3138e..ac33df9 100644
--- a/lib/doc/jao-org-focus.el
+++ b/lib/doc/jao-org-focus.el
@@ -26,6 +26,7 @@
 
 ;;; focus on subtree
 (defvar-local jao-org-focus--parent nil)
+(defvar-local jao-org-focus--section nil)
 
 (defun jao-org-focus ()
   "Pop creatingly to an indirect buffer focused on the encloing subtree.
@@ -34,19 +35,40 @@ When invoked on an indirect buffer, pops back to its base."
   (interactive)
   (if-let* ((b (get-buffer (or jao-org-focus--parent ""))))
       (pop-to-buffer b)
-      (when-let* ((elem (org-element-at-point))
-                  (header (if (eq 'headline (org-element-type elem))
-                              elem
-                            (org-previous-visible-heading 1)
-                            (org-element-at-point)))
-                  (title (org-element-property :title header))
-                  (parent (buffer-name))
-                  (bname (format "%s [%s]" title parent)))
-        (if-let* ((b (get-buffer bname)))
-            (pop-to-buffer b)
-          (clone-indirect-buffer bname t)
-          (setq jao-org-focus--parent parent)
-          (org-narrow-to-subtree)))))
+    (when-let* ((elem (org-element-at-point))
+                (header (if (eq 'headline (org-element-type elem))
+                            elem
+                          (org-previous-visible-heading 1)
+                          (org-element-at-point)))
+                (title (org-element-property :title header))
+                (parent (buffer-name))
+                (bname (format "%s [%s]" title parent)))
+      (if-let* ((b (get-buffer bname)))
+          (pop-to-buffer b)
+        (clone-indirect-buffer bname t)
+        (setq jao-org-focus--parent parent
+              jao-org-focus--section title)
+        (org-narrow-to-subtree)
+        (show-subtree)))))
+
+(defun jao-org-focus-redisplay ()
+  "Redisplay a focused buffer.
+
+Useful when its parent has been reorganised and the narrowing is out of
+sync."
+  (interactive)
+  (when-let* ((title jao-org-focus--section))
+    (widen)
+    (goto-char (point-min))
+    (when (re-search-forward (format "\\*+ %s" title) nil t)
+      (org-narrow-to-subtree)
+      (beginning-of-line))))
+
+(defun jao-org-focus-redisplay-children ()
+  "Find focused children and redisplay them."
+  (interactive)
+  (dolist (b (jao-org-focus-list))
+    (with-current-buffer b (jao-org-focus-redisplay))))
 
 (defun jao-org-focus-list (&optional any-parent)
   "List of buffers that are focusing on a subtree of this one or its parent."
-- 
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