False positive on missing parameters

I have a file containing the following code.

#!/usr/bin/env python3
"""Filesystem related util functions.
"""
import re
from typing import Union, List, Tuple, Iterable
from pathlib import Path

def update_file(
    path: Path,
    regex: List[Tuple[str, str]] = None,
    exact: List[Tuple[str, str]] = None,
    append: Union[str, Iterable[str]] = None,
    exist_skip: bool = True,
) -> None:
    """Update a text file using regular expression substitution.

    :param path: A Path object to the file to be updated.
    :param regex: A list of tuples containing regular expression patterns
        and the corresponding replacement text.
    :param exact: A list of tuples containing exact patterns and the corresponding replacement text.
    :param append: A string of a list of lines to append.
        When append is a list of lines, "\n" is automatically added to each line.
    :param exist_skip: Skip appending if already exists.
    """
    if isinstance(path, str):
        path = Path(path)
    text = path.read_text()
    if regex:
        for pattern, replace in regex:
            text = re.sub(pattern, replace, text)
    if exact:
        for pattern, replace in exact:
            text = text.replace(pattern, replace)
    if append:
        if not isinstance(append, str):
            append = "\n".join(append)
        if not exist_skip or append not in text:
            text += append
    path.write_text(text)

With the following configuration,

[darglint]
docstring_style=sphinx
message_template={path}:{line}: {msg_id}: {msg}

darglint reports missing parameters.

f2.py:14: DAR101: - append
f2.py:14: DAR101: - exact
f2.py:14: DAR101: - exist_skip
f2.py:14: DAR101: - path
f2.py:14: DAR101: - regex

terrencepreilly / darglint

False positive on missing parameters #146