The directory "lib-python/modified-2.7" has been removed, and its
content merged into "lib-python/2.7".
.. branch: step-one-xrange
+The common case of a xrange iterator with no step argument specifed
+was somewhat optimized. The tightest loop involving it,
+sum(xrange(n)), is now 18% faster on average.
PyPy refuses filenames with chr(0) characters. This is implemented in
RPython which can enforce no-NUL correctness and propagation, similar