add relative overdueness option

anki/consts.py

@@ -36,6 +36,7 @@ DYN_LAPSES = 4
 DYN_ADDED = 5
 DYN_DUE = 6
 DYN_REVADDED = 7
+DYN_DUEPRIORITY = 8
 
 # model types
 MODEL_STD = 0
@@ -83,4 +84,5 @@ def dynOrderLabels():
         5: _("Order added"),
         6: _("Order due"),
         7: _("Latest added first"),
+        8: _("Relative overdueness"),
         }

anki/sched.py

@@ -967,6 +967,9 @@ due = odue, odue = 0, odid = 0, usn = ?, mod = ? where %s""" % lim,
             t = "n.id desc"
         elif o == DYN_DUE:
             t = "c.due"
+        elif o == DYN_DUEPRIORITY:
+            t = "(case when queue=2 and due <= %d then (ivl / cast(%d-due+0.001 as real)) else 10000+due end)" % (
+                    self.today, self.today)
         else:
             # if we don't understand the term, default to due order
             t = "c.due"