1.1 --- a/docs/optimisations.txt	Sun Nov 22 21:21:41 2009 +0100
     1.2 +++ b/docs/optimisations.txt	Sun Nov 22 22:53:24 2009 +0100
     1.3 @@ -228,7 +228,7 @@
     1.4  result would resemble the following:
     1.5  
     1.6      def f(x, y):
     1.7 -        if not isinstance(x, C):
     1.8 +        if not isinstance(x, C) and x is not C:
     1.9              raise TypeError
    1.10          x.method(y)
    1.11          if x.something: