From e64546cbaec3020fc7c6db5320e852e40f28513b Mon Sep 17 00:00:00 2001
From: Forest <forestix@nom.one>
Date: Mon, 23 Sep 2024 16:04:38 -0700
Subject: [PATCH] imaplib: comment on use of unbuffered pipes

---
 Lib/imaplib.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Lib/imaplib.py b/Lib/imaplib.py
index 3f5f3afdda8f..b006a74a8190 100644
--- a/Lib/imaplib.py
+++ b/Lib/imaplib.py
@@ -1703,7 +1703,7 @@ class IMAP4_stream(IMAP4):
         self.sock = None
         self.file = None
         self.process = subprocess.Popen(self.command,
-            bufsize=0,
+            bufsize=0,  # Unbuffered stdin/stdout, for select() compatibility
             stdin=subprocess.PIPE, stdout=subprocess.PIPE,
             shell=True, close_fds=True)
         self.writefile = self.process.stdin
-- 
2.47.3