From d63403be8fa7b7344e40e878858c40bab7414324 Mon Sep 17 00:00:00 2001
From: "Jason R. Coombs" <jaraco@jaraco.com>
Date: Sun, 3 Jul 2022 13:33:39 -0400
Subject: [PATCH 1/3] Add test capturing expectation revealed by #253.

---
 importlib_resources/tests/test_reader.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/importlib_resources/tests/test_reader.py b/importlib_resources/tests/test_reader.py
index 16841a50..0ea3a086 100644
--- a/importlib_resources/tests/test_reader.py
+++ b/importlib_resources/tests/test_reader.py
@@ -76,6 +76,10 @@ def test_join_path(self):
             os.path.join('namespacedata01', 'imaginary'),
         )
 
+    def test_join_path_compound(self):
+        path = MultiplexedPath(self.folder)
+        assert not path.joinpath('imaginary/foo.py').exists()
+
     def test_repr(self):
         self.assertEqual(
             repr(MultiplexedPath(self.folder)),

From bad45d5b5c311598437cb720d58d2543d6dbff03 Mon Sep 17 00:00:00 2001
From: "Jason R. Coombs" <jaraco@jaraco.com>
Date: Sun, 3 Jul 2022 13:44:50 -0400
Subject: [PATCH 2/3] Suppress all TraversalErrors in MultiplexedPath. Fixes
 #253.

---
 importlib_resources/readers.py           | 11 ++++-------
 importlib_resources/tests/test_reader.py |  3 ---
 2 files changed, 4 insertions(+), 10 deletions(-)

diff --git a/importlib_resources/readers.py b/importlib_resources/readers.py
index 19450f46..ab34db74 100644
--- a/importlib_resources/readers.py
+++ b/importlib_resources/readers.py
@@ -85,13 +85,10 @@ def is_file(self):
     def joinpath(self, *descendants):
         try:
             return super().joinpath(*descendants)
-        except abc.TraversalError as exc:
-            # One of the paths didn't resolve.
-            msg, target, names = exc.args
-            if names:  # pragma: nocover
-                raise
-            # It was the last; construct result with the first path.
-            return self._paths[0].joinpath(target)
+        except abc.TraversalError:
+            # One of the paths did not resolve (a directory does not exist).
+            # Just return something that will not exist.
+            return self._paths[0].joinpath(*descendants)
 
     def open(self, *args, **kwargs):
         raise FileNotFoundError(f'{self} is not a file')
diff --git a/importlib_resources/tests/test_reader.py b/importlib_resources/tests/test_reader.py
index 6148c31c..1c8ebeeb 100644
--- a/importlib_resources/tests/test_reader.py
+++ b/importlib_resources/tests/test_reader.py
@@ -3,8 +3,6 @@
 import pathlib
 import unittest
 
-import pytest
-
 from importlib import import_module
 from importlib_resources.readers import MultiplexedPath, NamespaceReader
 
@@ -79,7 +77,6 @@ def test_join_path(self):
         )
         self.assertEqual(path.joinpath(), path)
 
-    @pytest.mark.xfail(reason="#253")
     def test_join_path_compound(self):
         path = MultiplexedPath(self.folder)
         assert not path.joinpath('imaginary/foo.py').exists()

From 41d8e32e18998033ea9892412eb993458b78688b Mon Sep 17 00:00:00 2001
From: "Jason R. Coombs" <jaraco@jaraco.com>
Date: Sun, 3 Jul 2022 13:45:43 -0400
Subject: [PATCH 3/3] Update changelog. Ref #253.

---
 CHANGES.rst | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/CHANGES.rst b/CHANGES.rst
index 5321b177..570fe86f 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,3 +1,10 @@
+v5.8.1
+======
+
+* #253: In ``MultiplexedPath``, restore expectation that
+  a compound path with a non-existent directory does not
+  raise an exception.
+
 v5.8.0
 ======