Exit llm chat cleanly on Ctrl+D

[ATOM00blue]

Fixes #1214

Pressing Ctrl+D (EOF) at the llm chat prompt currently prints Aborted! and exits with a non-zero status, instead of exiting cleanly the way most interactive REPLs (Python, etc.) do:

> ^DAborted!

Root cause

The chat loop reads input with click.prompt(...). On EOF, click.prompt catches the underlying EOFError and re-raises it as click.exceptions.Abort. Nothing in the loop handles that, so it bubbles up to Click's top level, which prints Aborted! and exits with status 1.

Fix

Wrap the click.prompt call in the loop and treat an Abort as a clean exit:

while True:
    try:
        prompt = click.prompt("", prompt_suffix="> " if not in_multi else "")
    except click.exceptions.Abort:
        # Ctrl+D (EOF) should exit the chat cleanly
        break

Testing

Added test_chat_eof_exits_cleanly, which patches click.prompt to raise click.Abort (the same thing a real terminal EOF produces) and asserts the command exits with status 0 and never prints Aborted!. The test fails on main and passes with this change. The rest of tests/test_chat.py still passes.

[Copilot]

Pull request overview

This PR fixes llm chat so pressing Ctrl+D (EOF) exits the chat loop cleanly (status 0) instead of bubbling up to Click’s top-level abort handler that prints Aborted! and exits non-zero.

Changes:

• Catch click.exceptions.Abort around the click.prompt(...) call in the chat loop and exit the loop cleanly.
• Add a regression test that simulates EOF by patching click.prompt to raise click.Abort and asserting exit code 0 with no Aborted! output.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
llm/cli.py	Wraps the interactive prompt read to treat click.exceptions.Abort as a clean exit from llm chat.
tests/test_chat.py	Adds a test covering EOF/Abort behavior to prevent regression and verify clean exit semantics.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.