diff --git a/mercurial/context.py b/mercurial/context.py
--- a/mercurial/context.py
+++ b/mercurial/context.py
@@ -748,7 +748,7 @@
     __str__ = encoding.strmethod(__bytes__)
 
     def __repr__(self):
-        return "<%s %s>" % (type(self).__name__, str(self))
+        return r"<%s %s>" % (type(self).__name__, str(self))
 
     def __hash__(self):
         try: