Fuzzy Matching Not Working For Me

[Commando-Brando]

Hey everyone I am trying to test a regex pattern using regex package and currently the current test for the test parameters is failing:

("<ACCESSION-NUM>0000915913-23-000148", None),  # three typos (should fail)

Full Test:

import pytest
import regex

# Define the regex pattern with fuzzy matching
accession_fuzzy_regex_pattern = r"<(?:ACCESSION-NUMBER){e<=2}>\s*(\d+-\d+-\d+)"


# Test cases
@pytest.mark.parametrize(
    ("test_input", "expected"),
    [
        (
            "<ACCESSION-NUMBER>0000915913-23-000148",
            "0000915913-23-000148",
        ),  # exact match
        ("<ACCESSION-NUMBE>0000915913-23-000148", "0000915913-23-000148"),  # one typo
        ("<ACCESSION-NUMB>0000915913-23-000148", "0000915913-23-000148"),  # two typos
        ("<ACCESSION-NUM>0000915913-23-000148", None),  # three typos (should fail)
        (
            "<ACCSSION-NUMBER>0000915913-23-000148",
            None,
        ),  # missing one character (should fail)
        ("<ACCESSION-NUMBER>0000915913-23-", None),  # incomplete number (should fail)
        ("<ACCESSION-NUMBER>", None),  # no number (should fail)
        ("0000915913-23-000148", None),  # no tag (should fail)
    ],
)
def test_accession_number_regex(test_input, expected):
    """Test the accession number regex pattern."""
    match = regex.search(accession_fuzzy_regex_pattern, test_input)
    if match:
        group_one = match.group(1)
        assert group_one == expected
    else:
        assert expected is None

The failing test case (#4) has 3 typos so it should not match but for some reason it matches and so does deleted more characters.

[mrabarnett]

With regex 2023.10.3 (the current version) I'm getting:

"<ACCESSION-NUM>0000915913-23-000148"   # no match
"<ACCSSION-NUMBER>0000915913-23-000148" # match

as expected.