Uncaught KeyboardInterrupt During `io.confirm_ask`

by ADMIN 51 views

Issue

When using the aider tool, sending a keyboard interrupt with Ctrl+C during the confirmation prompt causes an uncaught KeyboardInterrupt to be raised. This issue is particularly problematic because the global exception handler set with report_uncaught_exceptions intentionally ignores KeyboardInterrupt. As a result, the session is not terminated as expected, and the user is left with an unhandled exception.

Problematic Code

The issue arises from the way the io.confirm_ask function is implemented. This function is responsible for prompting the user for confirmation and returning the result. However, when the user sends a keyboard interrupt (Ctrl+C), the function does not properly handle the exception, leading to an uncaught KeyboardInterrupt.

def confirm_ask(self, prompt, default=False):
    res = self.prompt_session.prompt(
        prompt,
        completer=None,
        complete_while_typing=False,
        default=default,
        refresh_interval=0.1,
        refresh_interval_callback=None,
        on_abort=None,
        on_abort_handler=None,
        on_abort_message=None,
        on_abort_message_handler=None,
        on_abort_message_handler_args=None,
        on_abort_message_handler_kwargs=None,
        on_abort_message_handler_locals=None,
        on_abort_message_handler_self=None,
        on_abort_message_handler_type=None,
        on_abort_message_handler_value=None,
        on_abort_message_handler_exception=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
 on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on_abort_message_handler_exception_locals=None,
        on_abort_message_handler_exception_self=None,
        on_abort_message_handler_exception_type=None,
        on_abort_message_handler_exception_value=None,
        on<br/>
**Q&A: Uncaught KeyboardInterrupt during `io.confirm_ask`**
=====================================================

**Q: What is the issue with `io.confirm_ask`?**
--------------------------------------------

A: The issue with `io.confirm_ask` is that it does not properly handle keyboard interrupts (Ctrl+C) during the confirmation prompt. When a keyboard interrupt is sent, an uncaught `KeyboardInterrupt` exception is raised, which can cause the session to terminate unexpectedly.

**Q: Why is this a problem?**
---------------------------

A: This is a problem because the global exception handler set with `report_uncaught_exceptions` intentionally ignores `KeyboardInterrupt`. As a result, the session is not terminated as expected, and the user is left with an unhandled exception.

**Q: How can I reproduce this issue?**
--------------------------------------

A: To reproduce this issue, simply run the `aider` tool and send a keyboard interrupt (Ctrl+C) during the confirmation prompt. You should see an uncaught `KeyboardInterrupt` exception raised.

**Q: What are the possible solutions to this issue?**
------------------------------------------------

A: There are several possible solutions to this issue:

1. **Modify the `io.confirm_ask` function**: The `io.confirm_ask` function can be modified to properly handle keyboard interrupts. This can be done by catching the `KeyboardInterrupt` exception and terminating the session cleanly.
2. **Use a different exception handler**: The global exception handler set with `report_uncaught_exceptions` can be modified to handle `KeyboardInterrupt` exceptions differently. For example, it can be configured to terminate the session cleanly when a `KeyboardInterrupt` exception is raised.
3. **Implement a custom exception handler**: A custom exception handler can be implemented to handle `KeyboardInterrupt` exceptions specifically. This can be done by creating a custom exception handler class that inherits from the `Exception` class and overrides the `handle` method to terminate the session cleanly.

**Q: How can I implement a custom exception handler?**
---------------------------------------------------

A: To implement a custom exception handler, you can create a new class that inherits from the `Exception` class. For example:

```python
class CustomExceptionHandler(Exception):
    def handle(self, exception):
        # Terminate the session cleanly
        print("Terminating session cleanly...")
        sys.exit(0)

You can then use this custom exception handler in your code by catching the KeyboardInterrupt exception and raising the custom exception handler:

try:
    # Code that may raise a KeyboardInterrupt exception
    pass
except KeyboardInterrupt:
    raise CustomExceptionHandler()

Q: What are the benefits of implementing a custom exception handler?

A: The benefits of implementing a custom exception handler include:

  1. Improved error handling: A custom exception handler can provide more detailed and informative error messages, making it easier to diagnose and fix issues.
  2. Customizable behavior: A custom exception handler can be configured to handle exceptions in a way that is specific to your application or use case.
  3. Improved user experience: A custom exception handler can provide a better user experience by terminating the session cleanly and providing a clear error message.