From e5413ec7831608f6cb4f39d805785cb1d7b67702 Mon Sep 17 00:00:00 2001
From: Lysandros Nikolaou <lisandrosnik@gmail.com>
Date: Tue, 7 May 2024 16:31:56 +0200
Subject: gh-118682: Revert forcing str commands, allow class commands in
 pyrepl (#118709)

---
 Lib/_pyrepl/reader.py   | 10 +++++++---
 Lib/test/test_pyrepl.py |  9 +++++++++
 2 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/Lib/_pyrepl/reader.py b/Lib/_pyrepl/reader.py
index e36f65c..d84c164 100644
--- a/Lib/_pyrepl/reader.py
+++ b/Lib/_pyrepl/reader.py
@@ -568,12 +568,16 @@ class Reader:
         """`cmd` is a tuple of "event_name" and "event", which in the current
         implementation is always just the "buffer" which happens to be a list
         of single-character strings."""
-        assert isinstance(cmd[0], str)
 
         trace("received command {cmd}", cmd=cmd)
-        command_type = self.commands.get(cmd[0], commands.invalid_command)
-        command = command_type(self, *cmd)  # type: ignore[arg-type]
+        if isinstance(cmd[0], str):
+            command_type = self.commands.get(cmd[0], commands.invalid_command)
+        elif isinstance(cmd[0], type):
+            command_type = cmd[0]
+        else:
+            return  # nothing to do
 
+        command = command_type(self, *cmd)  # type: ignore[arg-type]
         command.do()
 
         self.after_command(command)
diff --git a/Lib/test/test_pyrepl.py b/Lib/test/test_pyrepl.py
index b7ae91b..bb9e36b 100644
--- a/Lib/test/test_pyrepl.py
+++ b/Lib/test/test_pyrepl.py
@@ -976,6 +976,15 @@ class TestReader(TestCase):
         reader.setpos_from_xy(0, 1)
         self.assertEqual(reader.pos, 9)
 
+    def test_up_arrow_after_ctrl_r(self):
+        events = iter([
+            Event(evt='key', data='\x12', raw=bytearray(b'\x12')),
+            Event(evt='key', data='up', raw=bytearray(b'\x1bOA')),
+        ])
+
+        reader, _ = handle_all_events(events)
+        self.assert_screen_equals(reader, "")
+
 
 if __name__ == "__main__":
     unittest.main()
-- 
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