From 301a620a25acd3106bf3942fddfb7bc3e4b084c5 Mon Sep 17 00:00:00 2001
From: antoine <antoine.guingand@wanadoo.fr>
Date: Sun, 3 Dec 2023 09:21:09 +0100
Subject: [PATCH] Allow to insert adjacent ordered lists

---
 __tests__/serialize.spec.js          |  4 ++++
 src/extensions/nodes/ordered-list.js | 17 ++++++++++++++---
 2 files changed, 18 insertions(+), 3 deletions(-)

diff --git a/__tests__/serialize.spec.js b/__tests__/serialize.spec.js
index db56aeb..8a0e102 100644
--- a/__tests__/serialize.spec.js
+++ b/__tests__/serialize.spec.js
@@ -80,6 +80,10 @@ describe('serialize', () => {
             expect(serialize('<ol start="10"><li>example1</li><li>example2</li></ol>'))
                 .toEqual('10. example1\n11. example2');
         });
+        test('adjacent ordered list', () => {
+            expect(serialize('<ol><li>example1</li></ol><ol><li>example2</li></ol><ol><li>example3</li></ol>'))
+                .toEqual('1. example1\n\n\n1) example2\n\n\n1. example3'); // prosemirror-markdown insert 3 \n, only 2 are needed
+        })
         test('fence', () => {
             expect(serialize('<pre><code class="language-js">example</code></pre>')).toEqual('```js\nexample\n```');
         })
diff --git a/src/extensions/nodes/ordered-list.js b/src/extensions/nodes/ordered-list.js
index 207c898..d16bfd4 100644
--- a/src/extensions/nodes/ordered-list.js
+++ b/src/extensions/nodes/ordered-list.js
@@ -1,11 +1,20 @@
 import { Node } from "@tiptap/core";
-import { defaultMarkdownSerializer } from "prosemirror-markdown";
 
 
 const OrderedList = Node.create({
     name: 'orderedList',
 });
 
+function findIndexOfAdjacentNode(node, parent, index) {
+    let i = 0;
+    for (; index - i > 0; i++) {
+        if (parent.child(index - i - 1).type.name !== node.type.name) {
+            break;
+        }
+    }
+    return i;
+}
+
 export default OrderedList.extend({
     /**
      * @return {{markdown: MarkdownNodeSpec}}
@@ -13,13 +22,15 @@ export default OrderedList.extend({
     addStorage() {
         return {
             markdown: {
-                serialize(state,node) {
+                serialize(state, node, parent, index) {
                     const start = node.attrs.start || 1
                     const maxW = String(start + node.childCount - 1).length
                     const space = state.repeat(" ", maxW + 2)
+                    const adjacentIndex = findIndexOfAdjacentNode(node, parent, index);
+                    const separator = adjacentIndex % 2 ? ') ' : '. ';
                     state.renderList(node, space, i => {
                         const nStr = String(start + i)
-                        return state.repeat(" ", maxW - nStr.length) + nStr + ". "
+                        return state.repeat(" ", maxW - nStr.length) + nStr + separator;
                     })
                 },
                 parse: {