to 1000x faster in some cases).  It is still one to two order of magnitudes
slower than binary tell().

Documented the list of optimized encodings as CPython implementation
detail.

'latin-1' and 'utf-8'.

These are optimized in the Python Unicode implementation
to result in more direct processing, bypassing the codec
registry.

Also see issue11303.

http://mail.python.org/pipermail/python-dev/2011-January/107735.html

a buffer struct having a NULL data pointer.

svn+ssh://pythondev@svn.python.org/sandbox/trunk/2to3/lib2to3

........
  r88535 | brett.cannon | 2011-02-23 13:46:46 -0600 (Wed, 23 Feb 2011) | 1 line

  Add lib2to3.__main__ for easy testing from the console.
........

Fix the test for last module changes (r88520).

On Windows, input() strips '\r' (and not only '\n'), and sys.stdin uses
universal newline (replace '\r\n' by '\n').

regression in _FileInFile which is used in file-like objects returned
by TarFile.extractfile(). The inefficient design of the
_FileInFile.read() method causes various dramatic side-effects and
errors:

  - The data segment of a file member is read completely into memory
    every(!) time a small block is accessed. This is not only slow
    but may cause unexpected MemoryErrors with very large files.
  - Reading members from compressed tar archives is even slower
    because of the excessive backwards seeking which is done when the
    same data segment is read over and over again.
  - As a backwards seek on a TarFile opened in stream mode is not
    possible, using extractfile() fails with a StreamError.

repr(module) uses %R to format module name and filenames, instead of '%s' and
'%U', so surrogates from undecodable bytes in a filename (PEP 383) are escaped.

And as a consequence, mark also name argument of
_PyImport_FindExtensionUnicode() constant too. But I plan to change this
argument type to PyObject* later.