From e407697fb98ebad89593e0274b3fe2efddc2d35a Mon Sep 17 00:00:00 2001
From: Damien Elmes <git@ichi2.net>
Date: Wed, 23 Mar 2011 10:17:39 +0900
Subject: [PATCH] fix interval calculation for lapsed cards in learning queue

---
 anki/sched.py       | 4 +++-
 tests/test_sched.py | 9 +++++++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/anki/sched.py b/anki/sched.py
index 6efc452ee..4a2143588 100644
--- a/anki/sched.py
+++ b/anki/sched.py
@@ -245,6 +245,9 @@ limit %d""" % self.reportLimit, lim=self.dayCutoff)
         card.type = 2
 
     def _graduatingIvl(self, card, conf, early):
+        if card.type == 2:
+            # lapsed card being relearnt
+            return card.ivl
         if not early:
             # graduate
             ideal =  conf['ints'][0]
@@ -557,7 +560,6 @@ queue = 2 %s and due <= :lim order by %s limit %d""" % (
     def nextIvl(self, card, ease):
         "Return the next interval for CARD, in seconds."
         if card.queue in (0,1):
-            # in learning
             return self._nextLrnIvl(card, ease)
         elif ease == 1:
             # lapsed
diff --git a/tests/test_sched.py b/tests/test_sched.py
index 8810d8f88..71a05cd14 100644
--- a/tests/test_sched.py
+++ b/tests/test_sched.py
@@ -256,6 +256,14 @@ def test_nextIvl():
     # normal graduation is tomorrow
     assert ni(c, 2) == 1*86400
     assert ni(c, 3) == 4*86400
+    # lapsed cards
+    ##################################################
+    c.type = 2
+    c.ivl = 100
+    c.factor = 2500
+    assert ni(c, 1) == 30
+    assert ni(c, 2) == 100*86400
+    assert ni(c, 3) == 100*86400
     # review cards
     ##################################################
     c.queue = 2
@@ -356,6 +364,7 @@ def test_cram():
     d.sched.answerCard(c, 1)
     # graduating the card will keep the same interval, but shift the card
     # forward the number of days it had been waiting (75)
+    print d.sched.nextIvl(c, 3)
     assert d.sched.nextIvl(c, 3) == 75*86400
     d.sched.answerCard(c, 3)
     assert c.ivl == 100