context: add __repr__ methods to workingfilectx and workingctx

mercurial/context.py

@@ -603,6 +603,9 b' class workingctx(changectx):'
     def __str__(self):
         return str(self._parents[0]) + "+"
 
+    def __repr__(self):
+        return "<workingctx %s>" % str(self)
+
     def __nonzero__(self):
         return True
 
@@ -897,6 +900,9 b' class workingfilectx(filectx):'
     def __str__(self):
         return "%s@%s" % (self.path(), self._changectx)
 
+    def __repr__(self):
+        return "<workingfilectx %s>" % str(self)
+
     def data(self):
         return self._repo.wread(self._path)
     def renamed(self):