From 2b07d1a493ff0e595401a4b1dadbbc67617ef7c6 Mon Sep 17 00:00:00 2001
From: mooonfly <izhangdaopeng@gmail.com>
Date: Fri, 11 Jul 2025 02:37:29 +0800
Subject: [PATCH] Fix duplicated character when composing text (#234)

---
 src-web/components/core/Editor/singleLine.ts | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src-web/components/core/Editor/singleLine.ts b/src-web/components/core/Editor/singleLine.ts
index 2b46e1ec..8e438ce9 100644
--- a/src-web/components/core/Editor/singleLine.ts
+++ b/src-web/components/core/Editor/singleLine.ts
@@ -6,6 +6,9 @@ export function singleLineExtensions(): Extension {
     (tr: Transaction): TransactionSpec | TransactionSpec[] => {
       if (!tr.isUserEvent('input')) return tr;
 
+      // when composing text via IME, return
+      if (tr.isUserEvent('input.type.compose')) return tr;
+
       const specs: TransactionSpec[] = [];
       tr.changes.iterChanges((_, toA, fromB, toB, inserted) => {
         let insert = '';