From 191a93905a84f272b2232701dc5dcc69987330f5 Mon Sep 17 00:00:00 2001
From: "Miss Islington (bot)"
 <31488909+miss-islington@users.noreply.github.com>
Date: Fri, 29 Oct 2021 08:25:31 -0700
Subject: [3.10] bpo-45628: Check all parts of the suffix for an extension
 match. (GH-29310) (GH-29314)

---
 Lib/logging/handlers.py | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/Lib/logging/handlers.py b/Lib/logging/handlers.py
index 4dcbe45..4e8f0a8 100644
--- a/Lib/logging/handlers.py
+++ b/Lib/logging/handlers.py
@@ -371,8 +371,13 @@ class TimedRotatingFileHandler(BaseRotatingHandler):
         for fileName in fileNames:
             if fileName[:plen] == prefix:
                 suffix = fileName[plen:]
-                if self.extMatch.match(suffix):
-                    result.append(os.path.join(dirName, fileName))
+                # See bpo-45628: The date/time suffix could be anywhere in the
+                # filename
+                parts = suffix.split('.')
+                for part in parts:
+                    if self.extMatch.match(part):
+                        result.append(os.path.join(dirName, fileName))
+                        break
         if len(result) < self.backupCount:
             result = []
         else:
-- 
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