From b1e8a68df8e7c858c78b89681678396005a678dc Mon Sep 17 00:00:00 2001
From: Andrew Murray <radarhere@gmail.com>
Date: Thu, 14 May 2015 09:57:56 +1000
Subject: [PATCH] When copying Image, copy ImagePalette as well

---
 PIL/Image.py        |  3 ++-
 PIL/ImagePalette.py | 12 ++++++++++++
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/PIL/Image.py b/PIL/Image.py
index 37428ec30..8ef4969ef 100644
--- a/PIL/Image.py
+++ b/PIL/Image.py
@@ -509,7 +509,8 @@ class Image:
         new.im = im
         new.mode = im.mode
         new.size = im.size
-        new.palette = self.palette
+        if self.palette:
+            new.palette = self.palette.copy()
         if im.mode == "P" and not new.palette:
             from PIL import ImagePalette
             new.palette = ImagePalette.ImagePalette()
diff --git a/PIL/ImagePalette.py b/PIL/ImagePalette.py
index c6c05d162..b5f07ee61 100644
--- a/PIL/ImagePalette.py
+++ b/PIL/ImagePalette.py
@@ -34,6 +34,18 @@ class ImagePalette:
                 (size != 0 and size != len(self.palette))):
             raise ValueError("wrong palette size")
 
+    def copy(self):
+        new = ImagePalette()
+
+        new.mode = self.mode
+        new.rawmode = self.rawmode
+        if self.palette is not None:
+            new.palette = self.palette[:]
+        new.colors = self.colors.copy()
+        new.dirty = self.dirty
+
+        return new
+
     def getdata(self):
         """
         Get palette contents in format suitable # for the low-level