From a10a30ff60cb7708f9884aa12102e887db0ce28f Mon Sep 17 00:00:00 2001
From: zombiej <smith3816@gmail.com>
Date: Sat, 26 Dec 2020 23:59:36 +0800
Subject: [PATCH] fix: miss merge logic

---
 components/input/TextArea.tsx | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/components/input/TextArea.tsx b/components/input/TextArea.tsx
index 6172665e8c..9ef0b034e8 100644
--- a/components/input/TextArea.tsx
+++ b/components/input/TextArea.tsx
@@ -96,10 +96,12 @@ const TextArea = React.forwardRef<TextAreaRef, TextAreaProps>(
       />
     );
 
-    const val = fixControlledValue(value) as string;
+    let val = fixControlledValue(value) as string;
 
     // Max length value
     const hasMaxLength = Number(maxLength) > 0;
+    // fix #27612 将value转为数组进行截取，解决 '😂'.length === 2 等emoji表情导致的截取乱码的问题
+    val = hasMaxLength ? [...val].slice(0, maxLength).join('') : val;
 
     // TextArea
     const textareaNode = (