From 58b4f35dfae35cac0ff685de0d0adeb669bbc4b2 Mon Sep 17 00:00:00 2001
From: Yufeng He <40085740+he-yufeng@users.noreply.github.com>
Date: Thu, 4 Jun 2026 11:43:46 +0800
Subject: [PATCH] fix(cli): skip thought parts in copy output (#4738)

---
 .../cli/src/ui/commands/copyCommand.test.ts   | 26 +++++++++++++++++++
 packages/cli/src/ui/commands/copyCommand.ts   |  2 +-
 2 files changed, 27 insertions(+), 1 deletion(-)

diff --git a/packages/cli/src/ui/commands/copyCommand.test.ts b/packages/cli/src/ui/commands/copyCommand.test.ts
index d199c702a9..aee08e8537 100644
--- a/packages/cli/src/ui/commands/copyCommand.test.ts
+++ b/packages/cli/src/ui/commands/copyCommand.test.ts
@@ -160,6 +160,32 @@ describe('copyCommand', () => {
     });
   });
 
+  it('should not copy thought parts from the last AI message', async () => {
+    if (!copyCommand.action) throw new Error('Command has no action');
+
+    const historyWithThoughtPart = [
+      {
+        role: 'model',
+        parts: [
+          { text: 'internal reasoning', thought: true },
+          { text: 'Visible report' },
+        ],
+      },
+    ];
+
+    mockGetHistoryShallow.mockReturnValue(historyWithThoughtPart);
+    mockCopyToClipboard.mockResolvedValue(undefined);
+
+    const result = await copyCommand.action(mockContext, '');
+
+    expect(mockCopyToClipboard).toHaveBeenCalledWith('Visible report');
+    expect(result).toEqual({
+      type: 'message',
+      messageType: 'info',
+      content: 'Last output copied to the clipboard',
+    });
+  });
+
   it('should filter out non-text parts', async () => {
     if (!copyCommand.action) throw new Error('Command has no action');
 
diff --git a/packages/cli/src/ui/commands/copyCommand.ts b/packages/cli/src/ui/commands/copyCommand.ts
index 789376f1e0..cbf214ae69 100644
--- a/packages/cli/src/ui/commands/copyCommand.ts
+++ b/packages/cli/src/ui/commands/copyCommand.ts
@@ -362,7 +362,7 @@ export const copyCommand: SlashCommand = {
     }
     // Extract text from the parts
     const lastAiOutput = lastAiMessage.parts
-      ?.filter((part) => part.text)
+      ?.filter((part) => part.text && !part.thought)
       .map((part) => part.text)
       .join('');