From a84cd4a6dd0b4afd7b082ae40377427b4eb6449b Mon Sep 17 00:00:00 2001
From: Vanessa <lly219@gmail.com>
Date: Thu, 14 Sep 2023 20:08:41 +0800
Subject: [PATCH] :bug: fix https://github.com/siyuan-note/siyuan/issues/9178

---
 app/src/protyle/undo/index.ts | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/app/src/protyle/undo/index.ts b/app/src/protyle/undo/index.ts
index 8cda95be2..7208a3b95 100644
--- a/app/src/protyle/undo/index.ts
+++ b/app/src/protyle/undo/index.ts
@@ -68,6 +68,12 @@ export class Undo {
     }
 
     public replace(doOperations: IOperation[]) {
+        // undo 引发 replace 导致 stack 错误 https://github.com/siyuan-note/siyuan/issues/9178
+        if (this.hasUndo && this.redoStack.length > 0) {
+            this.undoStack.push(this.redoStack.pop())
+            this.redoStack = [];
+            this.hasUndo = false;
+        }
         if (this.undoStack.length > 0) {
             this.undoStack[this.undoStack.length - 1].doOperations = doOperations;
         }