From 3713c86373bd57ba15aefd40a0c35b6378f63948 Mon Sep 17 00:00:00 2001
From: Jarrett Ye <jarrett.ye@outlook.com>
Date: Sun, 26 Nov 2023 11:14:31 +0800
Subject: [PATCH] don't convert from sm2 when ivl = 0 (#2849)

---
 rslib/src/scheduler/fsrs/memory_state.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rslib/src/scheduler/fsrs/memory_state.rs b/rslib/src/scheduler/fsrs/memory_state.rs
index f22d8c5a3..dc2fc54f4 100644
--- a/rslib/src/scheduler/fsrs/memory_state.rs
+++ b/rslib/src/scheduler/fsrs/memory_state.rs
@@ -160,7 +160,7 @@ impl Card {
         self.memory_state = item
             .map(|i| fsrs.memory_state(i.item, i.starting_state))
             .or_else(|| {
-                if self.ctype == CardType::New {
+                if self.ctype == CardType::New || self.interval == 0 {
                     None
                 } else {
                     // no valid revlog entries; infer state from current card state