From 882e4761c63ae76d994b57bbcd7e5adbf2aa7b4f Mon Sep 17 00:00:00 2001
From: "Miss Islington (bot)"
 <31488909+miss-islington@users.noreply.github.com>
Date: Fri, 30 Jul 2021 09:20:24 -0700
Subject: [PATCH] bpo-44753: Don't use logfile extension when determining old
 files to be deleted (GH-27475) (GH-27486)

(cherry picked from commit 6ff890380971752299325bd28eab80ec936975cf)
---
 Lib/logging/handlers.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Lib/logging/handlers.py b/Lib/logging/handlers.py
index 867ef4ebc760..74b67602fa94 100644
--- a/Lib/logging/handlers.py
+++ b/Lib/logging/handlers.py
@@ -356,7 +356,8 @@ def getFilesToDelete(self):
         dirName, baseName = os.path.split(self.baseFilename)
         fileNames = os.listdir(dirName)
         result = []
-        prefix = baseName + "."
+        # See bpo-44753: Don't use the extension when computing the prefix.
+        prefix = os.path.splitext(baseName)[0] + "."
         plen = len(prefix)
         for fileName in fileNames:
             if fileName[:plen] == prefix: