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-rw-r--r--gnosis-algorithm.el5
1 files changed, 5 insertions, 0 deletions
diff --git a/gnosis-algorithm.el b/gnosis-algorithm.el
index 86a997d..075e669 100644
--- a/gnosis-algorithm.el
+++ b/gnosis-algorithm.el
@@ -184,10 +184,15 @@ successful reviews."
;; This should only occur in testing env or when the user has made breaking changes.
(cl-assert (> (nth 2 ef) 1) "Total ef value must be above 1")
(let* ((ef (nth 2 gnosis-algorithm-ef))
+ ;; If last-interval is 0, use 1 instead.
+ (last-interval (if (<= last-interval 0) 1 last-interval))
(interval (cond ((and (= successful-reviews 0) success)
(car initial-interval))
((and (= successful-reviews 1) success)
(cadr initial-interval))
+ ;; If it's still on initial stage, review the
+ ;; same day
+ ((and (< successful-reviews 2) (not success)) 0)
(t (let* ((success-interval (* ef last-interval))
(failure-interval (* last-interval failure-factor)))
(if success success-interval