From 18f5929d982355b384328ef90ea39e76bb9f83dc Mon Sep 17 00:00:00 2001
From: fQwQf <supertjz123@foxmail.com>
Date: Tue, 25 Aug 2026 01:10:07 +0800
Subject: [PATCH] fix(tui): omit NUL characters in clipboard writes

Host clipboards reject NUL characters, so /copy failed entirely when a
transcript contained a NUL byte from shell output (#44198). Strip NULs
in the clipboard adapter so the copy succeeds without them.
---
 packages/tui/src/clipboard.ts       |  4 +++-
 packages/tui/test/clipboard.test.ts | 12 ++++++++++++
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/packages/tui/src/clipboard.ts b/packages/tui/src/clipboard.ts
index cd7a6ce1a170..015b92fe6460 100644
--- a/packages/tui/src/clipboard.ts
+++ b/packages/tui/src/clipboard.ts
@@ -51,7 +51,9 @@ export function createClipboardAdapter(clipboard: CoreClipboardService): OwnedCl
       throw new Error(`Unexpected clipboard MIME type: ${result.representation.mimeType}`)
     },
     async write(text) {
-      const result = await clipboard.writeText(text, {
+      // Host clipboards reject NUL characters (e.g. from shell tool output);
+      // omit them so a single stray byte cannot fail the whole copy.
+      const result = await clipboard.writeText(text.replaceAll("\0", ""), {
         destination: "all-available",
         selection: "clipboard",
       })
diff --git a/packages/tui/test/clipboard.test.ts b/packages/tui/test/clipboard.test.ts
index 6f4997f03032..c75061ec6a89 100644
--- a/packages/tui/test/clipboard.test.ts
+++ b/packages/tui/test/clipboard.test.ts
@@ -102,6 +102,18 @@ test("uses all available routes but skips the process host remotely", async () =
   expect(writes).toEqual({ host: 0, terminal: 1 })
 })
 
+test("omits NUL characters that host clipboards cannot carry", async () => {
+  const writes: [string, ClipboardWriteOptions][] = []
+  const clipboard = createClipboardAdapter(
+    coreClipboard({
+      onWrite: (text, input) => writes.push([text, input]),
+    }),
+  )
+
+  await clipboard.write("a\0b\0")
+  expect(writes).toEqual([["ab", { destination: "all-available", selection: "clipboard" }]])
+})
+
 test("rejects only when no clipboard route accepted the write", async () => {
   const writes: [string, ClipboardWriteOptions][] = []
   const failure = new Error("native clipboard failed")