Minor cleanup.

diff --git a/joy/utils/stack.py b/joy/utils/stack.py
index 3582216..fc11151 100644 (file)
--- a/joy/utils/stack.py
+++ b/joy/utils/stack.py
@@ -206,17 +206,15 @@ def dnd(stack, from_index, to_index):
                        h, stack = stack
                        head.append(h)
                        diff += 1
-               stack = item, stack
-               while head:
-                       stack = head.pop(), stack
        else:
                # from > to
                # so the destination is in the head list
-               while head:
+               while diff:
                        stack = head.pop(), stack
-                       from_index -= 1
-                       if from_index == to_index:
-                               stack = item, stack
+                       diff -= 1
+       stack = item, stack
+       while head:
+               stack = head.pop(), stack
        return stack