From 80f78c6fddfc8fe3116d1f122275fe8b4cc29bff Mon Sep 17 00:00:00 2001
From: gaoflow <claude@vinzzy.uk>
Date: Thu, 25 Jun 2026 01:00:11 +0200
Subject: [PATCH 1/2] fix: propagate input stream in Command.call() for
 interactive questions
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When a command uses call() to invoke another command that contains
interactive questions (confirm, ask, choice), the callee's input
stream was None, causing an AttributeError on readline().

The root cause: call() constructs a fresh StringInput whose _stream
defaults to None, but never copies the parent IO's stream. When the
callee calls confirm() → Question.ask() → io.read_line() →
input.read_line() → self._stream.readline(), the None stream raises
'NoneType' object has no attribute 'readline'.

Fix: propagate self._io.input.stream to the new StringInput before
passing it to _run_command, so the callee reads from the same stream
as the caller.

Fixes #333
---
 src/cleo/commands/command.py   |  5 +++-
 tests/commands/test_command.py | 43 ++++++++++++++++++++++++++++++++++
 2 files changed, 47 insertions(+), 1 deletion(-)

diff --git a/src/cleo/commands/command.py b/src/cleo/commands/command.py
index c617bc44..0549450d 100644
--- a/src/cleo/commands/command.py
+++ b/src/cleo/commands/command.py
@@ -92,8 +92,11 @@ def call(self, name: str, args: str | None = None) -> int:
         assert self.application is not None
         command = self.application.get(name)
 
+        string_input = StringInput(args or "")
+        string_input.set_stream(self._io.input.stream)
+
         return self.application._run_command(
-            command, self._io.with_input(StringInput(args or ""))
+            command, self._io.with_input(string_input)
         )
 
     def call_silent(self, name: str, args: str | None = None) -> int:
diff --git a/tests/commands/test_command.py b/tests/commands/test_command.py
index 4f4fd807..59dde075 100644
--- a/tests/commands/test_command.py
+++ b/tests/commands/test_command.py
@@ -87,3 +87,46 @@ def test_explicit_multiple_argument() -> None:
     tester.execute("1 2 3")
 
     assert tester.io.fetch_output() == "1,2,3\n"
+
+
+def test_call_propagates_stream_for_confirm() -> None:
+    """call() must propagate the parent's input stream so that interactive
+    questions (confirm, ask, …) in the callee can read from it.
+
+    Regression test for https://github.com/python-poetry/cleo/issues/333.
+    """
+
+    class GreetedCommand(Command):
+        name = "greeted"
+        description = "Greeted command"
+        arguments: ClassVar = [argument("name", "Name to greet")]
+
+        def handle(self) -> int:
+            name = self.argument("name")
+            confirmed = self.confirm(f"Say hello to {name}?")
+            if confirmed:
+                self.line(f"Hello, {name}!")
+            return 0
+
+    class GreeterCommand(Command):
+        name = "greeter"
+        description = "Greeter command"
+        arguments: ClassVar = [argument("name", "Name to greet")]
+
+        def handle(self) -> int:
+            # The first positional of the args string is consumed by the app's
+            # implicit "command" argument in the merged definition, so a
+            # placeholder is required before the actual argument values.
+            self.call("greeted", f"greeted {self.argument('name')}")
+            return 0
+
+    app = Application()
+    app.add(GreeterCommand())
+    app.add(GreetedCommand())
+
+    from cleo.testers.application_tester import ApplicationTester
+
+    tester = ApplicationTester(app)
+    # Provide "yes" so that confirm() can read from the propagated stream.
+    tester.execute("greeter Alice", inputs="yes\n")
+    assert "Hello, Alice!" in tester.io.fetch_output()

From 2315bfbda2d9005609a2532394f94f326a757155 Mon Sep 17 00:00:00 2001
From: Vincent Gao <gaobing1230@gmail.com>
Date: Fri, 26 Jun 2026 12:14:02 +0200
Subject: [PATCH 2/2] Add news entry for command call stream fix

---
 news/333.bugfix.md           | 1 +
 src/cleo/commands/command.py | 4 +---
 2 files changed, 2 insertions(+), 3 deletions(-)
 create mode 100644 news/333.bugfix.md

diff --git a/news/333.bugfix.md b/news/333.bugfix.md
new file mode 100644
index 00000000..8bac4b8f
--- /dev/null
+++ b/news/333.bugfix.md
@@ -0,0 +1 @@
+Propagated the parent command input stream when calling commands with interactive questions.
diff --git a/src/cleo/commands/command.py b/src/cleo/commands/command.py
index 0549450d..0993731a 100644
--- a/src/cleo/commands/command.py
+++ b/src/cleo/commands/command.py
@@ -95,9 +95,7 @@ def call(self, name: str, args: str | None = None) -> int:
         string_input = StringInput(args or "")
         string_input.set_stream(self._io.input.stream)
 
-        return self.application._run_command(
-            command, self._io.with_input(string_input)
-        )
+        return self.application._run_command(command, self._io.with_input(string_input))
 
     def call_silent(self, name: str, args: str | None = None) -> int:
         """