def fnmatch_ex(pattern: str, path: str | os.PathLike[str]) -> bool:
    """A port of FNMatcher from py.path.common which works with PurePath() instances.

    The difference between this algorithm and PurePath.match() is that the
    latter matches "**" glob expressions for each part of the path, while
    this algorithm uses the whole path instead.

    For example:
        "tests/foo/bar/doc/test_foo.py" matches pattern "tests/**/doc/test*.py"
        with this algorithm, but not with PurePath.match().

    This algorithm was ported to keep backward-compatibility with existing
    settings which assume paths match according this logic.

    References:
    * https://bugs.python.org/issue29249
    * https://bugs.python.org/issue34731
    """
    path = PurePath(path)
    iswin32 = sys.platform.startswith("win")

    if iswin32 and sep not in pattern and posix_sep in pattern:
        # Running on Windows, the pattern has no Windows path separators,
        # and the pattern has one or more Posix path separators. Replace
        # the Posix path separators with the Windows path separator.
        pattern = pattern.replace(posix_sep, sep)

    if sep not in pattern:
        name = path.name
    else:
        name = str(path)
        if path.is_absolute() and not os.path.isabs(pattern):
            pattern = f"*{os.sep}{pattern}"
    return fnmatch.fnmatch(name, pattern)
A port of FNMatcher from py.path.common which works with PurePath() instances.

    The difference between this algorithm and PurePath.match() is that the
    latter matches "**" glob expressions for each part of the path, while
    this algorithm uses the whole path instead.

    For example:
        "tests/foo/bar/doc/test_foo.py" matches pattern "tests/**/doc/test*.py"
        with this algorithm, but not with PurePath.match().

    This algorithm was ported to keep backward-compatibility with existing
    settings which assume paths match according this logic.

    References:
    * https://bugs.python.org/issue29249
    * https://bugs.python.org/issue34731
    
src/_pytest/pathlib.py