Yeah, I don't think this is ideal...

$ git diff
diff --git a/src/python/pants/source/filespec_test.py b/src/python/pants/source/filespec_test.py
index 168d619dd..652d8d517 100644
--- a/src/python/pants/source/filespec_test.py
+++ b/src/python/pants/source/filespec_test.py
@@ -90,6 +90,9 @@ def test_valid_matches(rule_runner: RuleRunner, glob: str, paths: Tuple[str, ...
         # Dirs.
         ("dist/", ("not_dist", "cdist", "dist.py", "dist/dist")),
         ("build-support/*.venv/", ("build-support/rbt.venv.but_actually_a_file",)),
+        # Case sensitivity
+        ("A", ("a",)),
+        ("a", ("A",)),
     ],
 )
 def test_invalid_matches(rule_runner: RuleRunner, glob: str, paths: Tuple[str, ...]) -> None:

$ ./pants test src/python/pants/source/filespec_test.py -- -k invalid
...
E           AssertionError: assert not ('A',)

src/python/pants/source/filespec_test.py:26: AssertionError

Womp womp

MatchOptions::default()

returns

case_sensitive

false

because its a bool, whereas ``MatchOptions::new()` returns

true

.