From 7e67b2cbb363979857019f27853cc88128b6dc93 Mon Sep 17 00:00:00 2001
From: Alexander Krotov <ilabdsf@gmail.com>
Date: Wed, 25 Mar 2020 00:32:42 +0300
Subject: [PATCH] Do not delete messages from special chats

---
 src/chat.rs | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/chat.rs b/src/chat.rs
index eba16047a..6adca60b9 100644
--- a/src/chat.rs
+++ b/src/chat.rs
@@ -2522,8 +2522,9 @@ pub fn delete_device_expired_messages(context: &Context) -> sql::Result<()> {
         context.sql.execute(
             "UPDATE msgs \
              SET txt = '', hidden = 1 \
-             WHERE timestamp < ?",
-            params![threshold_timestamp],
+             WHERE timestamp < ? \
+             AND chat_id > ?",
+            params![threshold_timestamp, DC_CHAT_ID_LAST_SPECIAL],
         )?;
     }
     Ok(())