From faa8c6a8f1fe9c3bac31061e8a59a686b983ebb8 Mon Sep 17 00:00:00 2001
From: "Miss Skeleton (bot)" <31488909+miss-islington@users.noreply.github.com>
Date: Sun, 4 Oct 2020 08:38:03 -0700
Subject: bpo-41898: add caveat on root logger seeing all messages in
 assertLogs doc (GH-22526) (GH-22540)

(cherry picked from commit 1ed54435268b285964141fb74d47ceaa33ea79ab)
---
 Doc/library/unittest.rst | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Doc/library/unittest.rst b/Doc/library/unittest.rst
index 285bb9e..8a4fd25 100644
--- a/Doc/library/unittest.rst
+++ b/Doc/library/unittest.rst
@@ -1088,7 +1088,8 @@ Test cases
 
       If given, *logger* should be a :class:`logging.Logger` object or a
       :class:`str` giving the name of a logger.  The default is the root
-      logger, which will catch all messages.
+      logger, which will catch all messages that were not blocked by a
+      non-propagating descendent logger.
 
       If given, *level* should be either a numeric logging level or
       its string equivalent (for example either ``"ERROR"`` or
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