Use regex for stripping

tests.py

@@ -0,0 +1,81 @@
+import ast
+from pathlib import Path
+from types import SimpleNamespace
+from typing import Callable, cast
+
+import pytest
+
+
+def _load_strip_keyword_function():
+    module_path = Path(__file__).resolve().parent / "__init__.py"
+    source = module_path.read_text(encoding="utf-8")
+    tree = ast.parse(source, filename=str(module_path))
+
+    function_node = next(
+        node
+        for node in tree.body
+        if isinstance(node, ast.FunctionDef) and node.name == "strip_keyword_from_disambiguation"
+    )
+
+    isolated_module = ast.Module(
+        body=[
+            ast.Import(names=[ast.alias(name="re")]),
+            function_node,
+        ],
+        type_ignores=[],
+    )
+    ast.fix_missing_locations(isolated_module)
+
+    namespace: dict[str, object] = {
+        "log": SimpleNamespace(debug=lambda *args, **kwargs: None),
+    }
+    exec(compile(isolated_module, str(module_path), "exec"), namespace)
+    return cast(Callable[[str, str], str], namespace["strip_keyword_from_disambiguation"])
+
+
+strip_keyword_from_disambiguation = _load_strip_keyword_function()
+
+
+@pytest.mark.parametrize(
+    "disambiguation, keyword, expected",
+    [
+        ("explicit", "explicit", ""),
+        ("original mix, explicit", "explicit", "original mix"),
+        ("original mix explicit", "explicit", "original mix"),
+        ("explicit, original mix", "explicit", "original mix"),
+        ("explicit album version", "explicit", "album version"),
+        ("explicit - original mix", "explicit", "original mix"),
+        ("original mix,explicit", "explicit", "original mix"),
+        ("original mix - explicit", "explicit", "original mix"),
+        ("original mix (explicit)", "explicit", "original mix"),
+        ("original mix ( explicit )", "explicit", "original mix"),
+        ("original explicit mix", "explicit", "original mix"),
+        ("album version, explicit, remix", "explicit", "album version, remix"),
+        ("album version - explicit - remix", "explicit", "album version - remix"),
+        ("album version | explicit | remix", "explicit", "album version | remix"),
+    ],
+)
+def test_strip_keyword_supported_patterns(disambiguation, keyword, expected):
+    assert strip_keyword_from_disambiguation(disambiguation, keyword) == expected
+
+
+def test_strip_keyword_is_case_insensitive():
+    result = strip_keyword_from_disambiguation("Original Mix, EXPLICIT", "explicit")
+    assert result == "Original Mix"
+
+
+def test_strip_keyword_returns_original_when_not_found():
+    original = "original mix, clean"
+    assert strip_keyword_from_disambiguation(original, "explicit") == original
+
+
+@pytest.mark.parametrize(
+    "disambiguation, keyword",
+    [
+        ("", "explicit"),
+        ("original mix", ""),
+        ("", ""),
+    ],
+)
+def test_strip_keyword_handles_empty_inputs(disambiguation, keyword):
+    assert strip_keyword_from_disambiguation(disambiguation, keyword) == disambiguation