From 1f03f19402266c63bbb7120f50caacf3f6f79a36 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ren=C3=A9=20=27Necoro=27=20Neumann?= <necoro@necoro.eu>
Date: Sun, 21 Feb 2021 16:43:39 +0100
Subject: #25 Check for folder again while locking

---
 internal/imap/mailboxes.go | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'internal')

diff --git a/internal/imap/mailboxes.go b/internal/imap/mailboxes.go
index f1dc6c6..25bf087 100644
--- a/internal/imap/mailboxes.go
+++ b/internal/imap/mailboxes.go
@@ -26,6 +26,14 @@ func (mbs *mailboxes) unlocking(elem Folder) {
 
 func (mbs *mailboxes) locking(elem Folder) bool {
 	mbs.mu.Lock()
+
+	// check again, if the folder has been created in the meantime
+	_, ok := mbs.mb[elem.str]
+	if ok {
+		mbs.mu.Unlock()
+		return true
+	}
+
 	ch, ok := mbs.changeLocks[elem.str]
 	if !ok {
 		ch = make(chan struct{})
-- 
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