From c78b9eb022598e79a97c1bb360290ba7907c50e2 Mon Sep 17 00:00:00 2001
From: NAKAMURA Yoshitaka <arumakanoy@gmail.com>
Date: Thu, 5 Jul 2018 15:24:51 +0900
Subject: [PATCH] Allow IMAP4.search() to accept "None" charset as docs say
 (#2310)

---
 stdlib/2and3/imaplib.pyi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/stdlib/2and3/imaplib.pyi b/stdlib/2and3/imaplib.pyi
index ecf80c0ff..ab32e7bac 100644
--- a/stdlib/2and3/imaplib.pyi
+++ b/stdlib/2and3/imaplib.pyi
@@ -69,7 +69,7 @@ class IMAP4:
     def partial(self, message_num: str, message_part: str, start: str, length: str) -> CommandResults: ...
     def proxyauth(self, user: str) -> CommandResults: ...
     def rename(self, oldmailbox: str, newmailbox: str) -> CommandResults: ...
-    def search(self, charset: str, *criteria: str) -> CommandResults: ...
+    def search(self, charset: Optional[str], *criteria: str) -> CommandResults: ...
     def select(self, mailbox: str = ..., readonly: bool = ...) -> CommandResults: ...
     def setacl(self, mailbox: str, who: str, what: str) -> CommandResults: ...
     def setannotation(self, *args: List[str]) -> CommandResults: ...