From 0e906d8e900e2e48e2896b31bfcf3736fb7c6a8a Mon Sep 17 00:00:00 2001
From: Pierre Sassoulas <pierre.sassoulas@gmail.com>
Date: Tue, 25 Jan 2022 19:56:13 +0100
Subject: [PATCH] Add a regression test for issue #3979

---
 tests/functional/r/regression_02/regression_3979.py | 9 +++++++++
 1 file changed, 9 insertions(+)
 create mode 100644 tests/functional/r/regression_02/regression_3979.py

diff --git a/tests/functional/r/regression_02/regression_3979.py b/tests/functional/r/regression_02/regression_3979.py
new file mode 100644
index 0000000000..25426af218
--- /dev/null
+++ b/tests/functional/r/regression_02/regression_3979.py
@@ -0,0 +1,9 @@
+import os
+from typing import TYPE_CHECKING, Any, Union
+
+if TYPE_CHECKING:
+    BasePathLike = os.PathLike[Any] # <-- that is where pylint identifies E1136
+else:
+    BasePathLike = os.PathLike
+
+foo : Union[str, BasePathLike] = "bar"