[Panic] byte index 2 is not a char boundary

[yuuuxt]

using v2023.56.0 and 1.85.1 in win10.

Seems a line inside docstring that starts with a Chinese character would cause this.

In jupyter notebook I create a function:

def sample_func(xx):
    """
    转置 (transpose)
    """
    return xx.T

the error logs:

thread 'main' panicked at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1\library\core\src\str\mod.rs:660:13:
byte index 2 is not a char boundary; it is inside '转' (bytes 0..3) of `转置`
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

[MichaReiser]

What's the command you're running? Is it ruff check or ruff format?

[yuuuxt]

not running any command, it's like an auto-check (not manually triggering formatting), so I assume it's similar to running ruff check.

[manunio]

@MichaReiser I think the bug is for both check and format , I was able to repro this by running check against .ipynb file with above sample_func.

ruff check .\test.ipynb
error: Panicked while linting test.ipynb: This indicates a bug in Ruff. If you could open an issue at:

    https://github.com/astral-sh/ruff/issues/new?title=%5BLinter%20panic%5D

...with the relevant file contents, the `pyproject.toml` settings, and the following stack trace, we'd be very appreciative!

panicked at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1\library\core\src\str\mod.rs:660:13:
byte index 2 is not a char boundary; it is inside '转' (bytes 0..3) of `转置`