From 566b16020abb0bd6092d67dddad7579d432c5d0a Mon Sep 17 00:00:00 2001
From: Antony Lee <anntzer.lee@gmail.com>
Date: Thu, 23 Apr 2015 01:06:32 -0700
Subject: [PATCH] Restore negative seeks for TIFF.

---
 PIL/TiffImagePlugin.py | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/PIL/TiffImagePlugin.py b/PIL/TiffImagePlugin.py
index 3b7c1d92d..8bba4e207 100644
--- a/PIL/TiffImagePlugin.py
+++ b/PIL/TiffImagePlugin.py
@@ -652,9 +652,7 @@ class TiffImageFile(ImageFile.ImageFile):
 
     def seek(self, frame):
         "Select a given frame as current image"
-        if frame < 0:
-            raise ValueError("invalid seek")
-        self._seek(frame)
+        self._seek(max(frame, 0))  # Questionable backwards compatibility.
         # Create a new core image object on second and
         # subsequent frames in the image. Image may be
         # different size/mode.