Summary

This looks like a fun one.

❯ cat foo.py
x = '123'  # noqa: O103

❯ cat ruff.toml
[lint]
select = ["E4", "E5", "E7", "E9", "F", "G", "RUF", "S", "UP"]
ignore = ["RUF102"]

❯ ruff check --fix foo.py 
warning: Invalid rule code provided to `# noqa` at foo.py:1: O103
Found 1 error (1 fixed, 0 remaining).

I thought I might have the wrong code so I tried RUF100 through RUF104. Curiously it seems I can only disable this warning by specifying all 5 codes or using a more generic ignore like RUF10.

❯ cat ruff.toml
[lint]
select = ["E4", "E5", "E7", "E9", "F", "G", "RUF", "S", "UP"]
ignore = ["RUF100", "RUF101", "RUF102", "RUF103", "RUF104"]

❯ ruff check --fix foo.py 
warning: Invalid rule code provided to `# noqa` at foo/__init__.py:1: O103
All checks passed!

You'll note that I still get a warning on the first run though (but not subsequent runs unless I remove .ruff_cache). I'd have expected silencing this error to also silence that warning. I'm guessing that warning comes from a different code path that predates RUF102 and should possibly be removed (?).

Note that I worked around this by using the lint.external setting to whitelist the non-ruff linter codes.

Version

ruff 0.15.1