fix issue #114

xlcnd · Oct 5, 2022 · a33cbbc · a33cbbc
1 parent acd4fb7
commit a33cbbc
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/isbnlib/_msk.py b/isbnlib/_msk.py
@@ -54,7 +54,7 @@ def msk(isbn, separator='-'):
         buf = ib[igi:cur + 1]
         group = group + buf[-1:]  # <-- HACK!
 
-    if idx is not None:  # <-- issue #114
+    if idx is not None:  # <-- issue #114 (idx = 0 is a valid possibility)
         if isbn10:
             group = group[4:]
             check = check10