From e3351d27555604524623bc8b6ae02f04a8414f97 Mon Sep 17 00:00:00 2001
From: Manos Pitsidianakis <manos@pitsidianak.is>
Date: Mon, 1 Jan 2024 14:34:50 +0200
Subject: [PATCH] melib/imap: fix set unseen updating all mboxes

When manually setting an envelope as not seen, all mailboxes had their
unseen count increased. This commit updates only those that include the
envelope in the first place.

Signed-off-by: Manos Pitsidianakis <manos@pitsidianak.is>
---
 melib/src/imap/mod.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/melib/src/imap/mod.rs b/melib/src/imap/mod.rs
index fbc65abd..21ae9efe 100644
--- a/melib/src/imap/mod.rs
+++ b/melib/src/imap/mod.rs
@@ -849,8 +849,8 @@ impl MailBackend for ImapType {
                     .await?;
                 if set_unseen {
                     for f in uid_store.mailboxes.lock().await.values() {
-                        if let Ok(mut unseen) = f.unseen.lock() {
-                            for env_hash in env_hashes.iter() {
+                        if let (Ok(mut unseen), Ok(exists)) = (f.unseen.lock(), f.exists.lock()) {
+                            for env_hash in env_hashes.iter().filter(|h| exists.contains(h)) {
                                 unseen.insert_new(env_hash);
                             }
                         };