From a64c5ff86998fa3efbff02364376ffd165caba21 Mon Sep 17 00:00:00 2001
From: Case Duckworth
Date: Tue, 13 Apr 2021 17:45:11 -0500
Subject: `org-return-dwim': work in nested lists

`org-return-dwim' now ends a list on an empty nested list item.

See the comment for details.
---
 lisp/acdw-org.el | 44 +++++++++++++++++++++++++++-----------------
 1 file changed, 27 insertions(+), 17 deletions(-)

diff --git a/lisp/acdw-org.el b/lisp/acdw-org.el
index 7e9fecd..dc85015 100644
--- a/lisp/acdw-org.el
+++ b/lisp/acdw-org.el
@@ -79,23 +79,33 @@ appropriate.  In tables, insert a new row or end the table."
       (org-insert-todo-heading nil))
 
      ((org-in-item-p)
-      ;; Plain list.  Yes, this gets a little complicated...
-      (let ((context (org-element-context)))
-        (if (or (eq 'plain-list (car context))  ; First item in list
-                (and (eq 'item (car context))
-                     (not (eq (org-element-property
-                               :contents-begin context)
-                              (org-element-property
-                               :contents-end context))))
-                ;; Element in list item, e.g. a link
-                (unpackaged/org-element-descendant-of 'item context))
-            ;; Non-empty item: Add new item.
-            (org-insert-item)
-          ;; Empty item: Close the list.
-          ;; TODO: Do this with org functions rather than operating
-          ;; on the text. Can't seem to find the right function.
-          (delete-region (line-beginning-position) (line-end-position))
-          (insert "\n"))))
+      ;; Plain list
+      (let* ((context (org-element-context))
+             (first-item-p (eq 'plain-list (car context)))
+             (itemp (eq 'item (car context)))
+             (emptyp (eq (org-element-property :contents-begin context)
+                         (org-element-property :contents-end context)))
+             (item-child-p
+              (unpackaged/org-element-descendant-of 'item context)))
+        (message "(or %S (and %S %S) %S)"
+                 first-item-p
+                 itemp (not emptyp)
+                 item-child-p)
+        ;; The original function from unpackaged just tested the (or ...) test
+        ;; in this cond, in an if.  However, that doesn't auto-end nested
+        ;; lists.  So I made this form a cond and added the (and...) test in
+        ;; the first position, which is clunky (the delete-region... stuff
+        ;; comes twice) and might not be needed.  More testing, obviously, but
+        ;; for now, it works well enough.
+        (cond ((and itemp emptyp)
+               (delete-region (line-beginning-position) (line-end-position))
+               (insert "\n\n"))
+              ((or first-item-p
+                   (and itemp (not emptyp))
+                   item-child-p)
+               (org-insert-item))
+              (t (delete-region (line-beginning-position) (line-end-position))
+                 (insert "\n")))))
 
      ((when (fboundp 'org-inlinetask-in-task-p)
         (org-inlinetask-in-task-p))
-- 
cgit 1.4.1-21-gabe81