From 77dea10e5fa642a0a60ce6374bb9c475671c4165 Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Fri, 20 Oct 2023 16:03:40 -0600
Subject: [PATCH] [varLib.interpolatable] Speed up _rot_list()

---
 Lib/fontTools/varLib/interpolatable.py | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/Lib/fontTools/varLib/interpolatable.py b/Lib/fontTools/varLib/interpolatable.py
index 61450ca4c..1eec4fe4e 100644
--- a/Lib/fontTools/varLib/interpolatable.py
+++ b/Lib/fontTools/varLib/interpolatable.py
@@ -20,11 +20,7 @@ import sys
 def _rot_list(l, k):
     """Rotate list by k items forward.  Ie. item at position 0 will be
     at position k in returned list.  Negative k is allowed."""
-    n = len(l)
-    k %= n
-    if not k:
-        return l
-    return l[n - k :] + l[: n - k]
+    return l[-k :] + l[: -k]
 
 
 class PerContourPen(BasePen):