Rule A003 cause panic

[qarmin]

ruff 0.4.6 (latest changes from main branch)

ruff  *.py --select A003 --no-cache --fix --unsafe-fixes --preview --output-format concise --isolated

file content:

 mp} assertot yt
s
__init__ impz

error

All checks passed!

error: Panicked while linting /home/rafal/test/tmp_folder/15358500963919727445.py: 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 crates/ruff_python_codegen/src/stylist.rs:112:51:
byte index 1 is not a char boundary; it is inside '\u{a0}' (bytes 0..2) of ` mp} assertot yt`
Backtrace:    0: ruff::panic::catch_unwind::{{closure}}
   1: std::panicking::rust_panic_with_hook
   2: std::panicking::begin_panic_handler::{{closure}}
   3: std::sys_common::backtrace::__rust_end_short_backtrace
   4: rust_begin_unwind
   5: core::panicking::panic_fmt
   6: core::str::slice_error_fail_rt
   7: core::str::slice_error_fail
   8: ruff_python_codegen::stylist::Stylist::from_tokens
   9: ruff_linter::linter::lint_fix
  10: ruff::diagnostics::lint_path
  11: ruff::commands::check::lint_path
  12: rayon::iter::plumbing::Producer::fold_with
  13: rayon::iter::plumbing::bridge_producer_consumer::helper
  14: ruff::commands::check::check
  15: ruff::check
  16: ruff::run
  17: ruff::main
  18: std::sys_common::backtrace::__rust_begin_short_backtrace
  19: std::rt::lang_start::{{closure}}
  20: std::rt::lang_start_internal
  21: main
  22: __libc_start_call_main
             at ./csu/../sysdeps/nptl/libc_start_call_main.h:58:16
  23: __libc_start_main_impl
             at ./csu/../csu/libc-start.c:360:3
  24: _start

python_compressed.zip

[MichaReiser]

Hmm, I don't see anything obvious here that's triggering this but certainly worth looking into. @charliermarsh you merged a PR for this yesterday.

[charliermarsh]

I can take it.