Ruff --fix on COM812 introducing TypeError

[fennerm]

I think I'm seeing some buggy behavior with the COM812 rule (running ruff v0.0.267).

Minimal example:

from collections import namedtuple

foo = namedtuple(
    name="foo",
    status="bar",
    message="sfdsdfsdgs fsdfsdf output!dsfdfsdjkg  ghfskdjghkdssd sd fsdf  s\n"[
        :20
    ],
)

Ruff returns error: 7:13: COM812 [*] Trailing comma missing. ruff --fix inserts a comma after :20 which is a TypeError.

[charliermarsh]

Thanks for reporting!

[JonathanPlasse]

I can work on it.