This means, for example, that opening an UTF-16 text file in
append mode doesn't add a BOM at the end of the file if the file isn't
empty.

Patch by Brian Quinlan.

The main io module now uses the C implementation.  The Python one still exists
in Lib/_pyio.py for ease of testing new features and usefulness to other
implementers.

The rewrite was done by Antoine Pitrou and Amaury Forgeot d'Arc.  I was slightly
helpful at the end. :)


Following are the log messages from the io-c branch:

Merged revisions 68683-68685,68687-68689,68693,68704,68741-68743,68745,68747,68752-68754,68756,68758,68812,68816-68817,68820-68822,68824-68825,68828,68876-68877,69037,69044,69104,69115,69194,69626-69629,69636,69638,69641-69642,69644-69654,69656-69661,69671,69677,69812-69815,69817,69827-69830,69839,69841-69845,69848,69850,69852,69854,69860,69865-69866,69868,69872-69873,69885,69888,69891-69893,69911,69913-69916,69963,70033,70035,70038,70041-70048,70067-70070,70075,70112,70133,70135,70140 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/io-c

........
  r68683 | antoine.pitrou | 2009-01-17 17:13:48 -0600 (Sat, 17 Jan 2009) | 3 lines

  Merge in changes from the io-c sandbox. Tests will follow in separate commits.
........
  r68684 | antoine.pitrou | 2009-01-17 17:17:26 -0600 (Sat, 17 Jan 2009) | 3 lines

  Fixes and additions to test_io.py
........
  r68685 | antoine.pitrou | 2009-01-17 17:22:04 -0600 (Sat, 17 Jan 2009) | 1 line

  Fix test_fileio
........
  r68687 | antoine.pitrou | 2009-01-17 17:35:11 -0600 (Sat, 17 Jan 2009) | 3 lines

  Add dependency to _iomodule.h for the various C sources
........
  r68688 | antoine.pitrou | 2009-01-17 17:38:18 -0600 (Sat, 17 Jan 2009) | 3 lines

  These precautions are not needed anymore!
........
  r68689 | antoine.pitrou | 2009-01-17 17:41:48 -0600 (Sat, 17 Jan 2009) | 3 lines

  Fix another test
........
  r68693 | antoine.pitrou | 2009-01-17 17:49:58 -0600 (Sat, 17 Jan 2009) | 3 lines

  Fix test_uu (which was using private attributes of TextIOWrapper)
........
  r68704 | antoine.pitrou | 2009-01-17 18:45:29 -0600 (Sat, 17 Jan 2009) | 3 lines

  Most io sources are Py_ssize_t-clean (I don't know about bytesio and stringio)
........
  r68741 | antoine.pitrou | 2009-01-18 15:20:30 -0600 (Sun, 18 Jan 2009) | 3 lines

  Check return type in TextIOWrapper.__next__
........
  r68742 | antoine.pitrou | 2009-01-18 15:28:48 -0600 (Sun, 18 Jan 2009) | 4 lines

  Make binary buffered readline and iteration much faster
  (8x as fast as the IOBase generic implementation)
........
  r68743 | antoine.pitrou | 2009-01-18 15:47:47 -0600 (Sun, 18 Jan 2009) | 3 lines

  Reinsert test_io_after_close (was removed by mistake)
........
  r68745 | antoine.pitrou | 2009-01-18 16:16:06 -0600 (Sun, 18 Jan 2009) | 3 lines

  Add read, read1 and write methods to BufferedIOBase
........
  r68747 | antoine.pitrou | 2009-01-18 16:35:58 -0600 (Sun, 18 Jan 2009) | 3 lines

  Kill test failure
........
  r68752 | amaury.forgeotdarc | 2009-01-18 17:05:43 -0600 (Sun, 18 Jan 2009) | 3 lines

  Fix a segfault when e.g a BufferedReader is created with a FileIO in
  read mode.
........
  r68753 | antoine.pitrou | 2009-01-18 17:13:09 -0600 (Sun, 18 Jan 2009) | 3 lines

  Add truncate() to text IO objects
........
  r68754 | antoine.pitrou | 2009-01-18 17:51:08 -0600 (Sun, 18 Jan 2009) | 3 lines

  Remove IOBase.__del__ and replace it with custom code with tp_dealloc
........
  r68756 | antoine.pitrou | 2009-01-18 18:10:16 -0600 (Sun, 18 Jan 2009) | 3 lines

  Remove irrelevant comment.
........
  r68758 | antoine.pitrou | 2009-01-18 18:36:16 -0600 (Sun, 18 Jan 2009) | 3 lines

  in importlib:_fileio._FileIO -> _io.FileIO
........
  r68812 | antoine.pitrou | 2009-01-20 14:15:51 -0600 (Tue, 20 Jan 2009) | 3 lines

  Add garbage collection support to FileIO objects
........
  r68816 | antoine.pitrou | 2009-01-20 14:56:28 -0600 (Tue, 20 Jan 2009) | 3 lines

  Add GC support to Buffered and Text IO objects
........
  r68817 | antoine.pitrou | 2009-01-20 15:19:45 -0600 (Tue, 20 Jan 2009) | 3 lines

  Add some file headers
........
  r68820 | antoine.pitrou | 2009-01-20 15:29:59 -0600 (Tue, 20 Jan 2009) | 3 lines

  Add class TextIOBase
........
  r68821 | antoine.pitrou | 2009-01-20 15:36:16 -0600 (Tue, 20 Jan 2009) | 3 lines

  Add properties to TextIOBase
........
  r68822 | antoine.pitrou | 2009-01-20 15:41:19 -0600 (Tue, 20 Jan 2009) | 3 lines

  Disable the pure Python TextIOBase class, and inject C the implementation instead
........
  r68824 | antoine.pitrou | 2009-01-20 16:36:28 -0600 (Tue, 20 Jan 2009) | 3 lines

  Fix two leaks
........
  r68825 | antoine.pitrou | 2009-01-20 16:38:29 -0600 (Tue, 20 Jan 2009) | 3 lines

  FileIO.name is just a plain attribute, we can set it directly
........
  r68828 | antoine.pitrou | 2009-01-20 17:06:33 -0600 (Tue, 20 Jan 2009) | 3 lines

  Speed up closed checks on text IO objects. Good for a 25% speedup on small ops.
........
  r68876 | antoine.pitrou | 2009-01-23 17:01:25 -0600 (Fri, 23 Jan 2009) | 3 lines

  Two typos
........
  r68877 | antoine.pitrou | 2009-01-23 18:13:20 -0600 (Fri, 23 Jan 2009) | 3 lines

  Remove two unused functions
........
  r69037 | amaury.forgeotdarc | 2009-01-27 17:10:25 -0600 (Tue, 27 Jan 2009) | 2 lines

  Update the win32 project files
........
  r69044 | antoine.pitrou | 2009-01-27 18:51:07 -0600 (Tue, 27 Jan 2009) | 3 lines

  Improve heuristic in IncrementalNewlineDecoder + some micro-optimizations
........
  r69104 | antoine.pitrou | 2009-01-29 15:23:42 -0600 (Thu, 29 Jan 2009) | 3 lines

  Fix some crashers found by Victor
........
  r69115 | hirokazu.yamamoto | 2009-01-29 20:36:28 -0600 (Thu, 29 Jan 2009) | 1 line

  Updated VC6 project file.
........
  r69194 | antoine.pitrou | 2009-02-01 16:57:18 -0600 (Sun, 01 Feb 2009) | 3 lines

  Fix downcasting warnings in 32-bit mode with 64-bit offsets (Windows)
........
  r69626 | benjamin.peterson | 2009-02-14 17:33:34 -0600 (Sat, 14 Feb 2009) | 1 line

  only catch AttributeError and UnsupportedOperation
........
  r69627 | benjamin.peterson | 2009-02-14 21:35:28 -0600 (Sat, 14 Feb 2009) | 1 line

  give the IO module its own state and store the os and locale modules in it
........
  r69628 | benjamin.peterson | 2009-02-14 22:08:32 -0600 (Sat, 14 Feb 2009) | 1 line

  put interned strings in the module state structure
........
  r69629 | benjamin.peterson | 2009-02-14 22:15:29 -0600 (Sat, 14 Feb 2009) | 1 line

  put UnsupportedOperation in the module state
........
  r69636 | benjamin.peterson | 2009-02-15 08:31:42 -0600 (Sun, 15 Feb 2009) | 1 line

  dealloc unsupported_operation
........
  r69638 | benjamin.peterson | 2009-02-15 09:24:45 -0600 (Sun, 15 Feb 2009) | 1 line

  actually test the C implementation
........
  r69641 | benjamin.peterson | 2009-02-15 10:12:37 -0600 (Sun, 15 Feb 2009) | 5 lines

  make interned strings globals again ;(

  putting them in the module state was asking for trouble when the module
  was dealloced before the classes in it were
........
  r69642 | benjamin.peterson | 2009-02-15 10:19:45 -0600 (Sun, 15 Feb 2009) | 1 line

  actually test the python implementations
........
  r69644 | antoine.pitrou | 2009-02-15 11:59:30 -0600 (Sun, 15 Feb 2009) | 3 lines

  Fix memory leak in destructor when a Python class inherits from IOBase (or an IOBase-derived type)
........
  r69645 | antoine.pitrou | 2009-02-15 12:23:26 -0600 (Sun, 15 Feb 2009) | 3 lines

  Add a warning about the embarassing state of IOBase finalization
........
  r69646 | antoine.pitrou | 2009-02-15 13:14:42 -0600 (Sun, 15 Feb 2009) | 3 lines

  Fix opening of 8-bit filenames with FileIO
........
  r69647 | antoine.pitrou | 2009-02-15 13:20:22 -0600 (Sun, 15 Feb 2009) | 3 lines

  Fix leak in FileIO constructor
........
  r69648 | antoine.pitrou | 2009-02-15 13:58:16 -0600 (Sun, 15 Feb 2009) | 3 lines

  Fix some refleaks
........
  r69649 | antoine.pitrou | 2009-02-15 14:05:13 -0600 (Sun, 15 Feb 2009) | 3 lines

  Fix a leak in IOBase.writelines
........
  r69650 | antoine.pitrou | 2009-02-15 14:11:56 -0600 (Sun, 15 Feb 2009) | 3 lines

  Fix memory leak in BufferedWriter.truncate
........
  r69651 | antoine.pitrou | 2009-02-15 14:25:34 -0600 (Sun, 15 Feb 2009) | 3 lines

  Fix a leak in TextIOWrapper.seek
........
  r69652 | antoine.pitrou | 2009-02-15 14:26:28 -0600 (Sun, 15 Feb 2009) | 3 lines

  Unify implementations of truncate for buffered objects
........
  r69653 | antoine.pitrou | 2009-02-15 15:15:15 -0600 (Sun, 15 Feb 2009) | 3 lines

  Fix more leaks in TextIOWrapper
........
  r69654 | antoine.pitrou | 2009-02-15 15:21:57 -0600 (Sun, 15 Feb 2009) | 3 lines

  Smaller chunk size for a faster test
........
  r69656 | benjamin.peterson | 2009-02-15 17:29:48 -0600 (Sun, 15 Feb 2009) | 1 line

  braces make this much clearer
........
  r69657 | benjamin.peterson | 2009-02-15 17:46:07 -0600 (Sun, 15 Feb 2009) | 1 line

  use the correct macro
........
  r69658 | antoine.pitrou | 2009-02-15 19:38:59 -0600 (Sun, 15 Feb 2009) | 5 lines

  Fix crash in test_urllib2_localnet in debug mode. It was due to an HTTPResponse
  object being revived when calling its close() method in IOBase's tp_dealloc.
  _PyIOBase_finalize() starts looking scary...
........
  r69659 | benjamin.peterson | 2009-02-15 20:55:48 -0600 (Sun, 15 Feb 2009) | 1 line

  fix segfault on initialization failing
........
  r69660 | benjamin.peterson | 2009-02-15 21:09:31 -0600 (Sun, 15 Feb 2009) | 1 line

  apparently locale.getprefferedencoding() can raise a ImportError, too
........
  r69661 | benjamin.peterson | 2009-02-15 21:54:15 -0600 (Sun, 15 Feb 2009) | 1 line

  it's amazing this worked at all; I was using the wrong structs!
........
  r69671 | benjamin.peterson | 2009-02-16 08:38:27 -0600 (Mon, 16 Feb 2009) | 1 line

  add garbage collection support to bytesio
........
  r69677 | benjamin.peterson | 2009-02-16 10:31:03 -0600 (Mon, 16 Feb 2009) | 5 lines

  reduce ImportError catching code duplication

  I'm not sure this makes the code clearer with its new gotos, but
  at least I added a big fat comment
........
  r69812 | antoine.pitrou | 2009-02-20 13:50:16 -0600 (Fri, 20 Feb 2009) | 3 lines

  _StringIO now belongs to the _io modules, rather to its own _stringio module
........
  r69813 | antoine.pitrou | 2009-02-20 13:58:22 -0600 (Fri, 20 Feb 2009) | 3 lines

  Add a test for StringIO properties
........
  r69814 | antoine.pitrou | 2009-02-20 14:06:03 -0600 (Fri, 20 Feb 2009) | 3 lines

  Reimplement a few trivial StringIO functions and properties in C
........
  r69815 | antoine.pitrou | 2009-02-20 14:13:11 -0600 (Fri, 20 Feb 2009) | 3 lines

  Add the line_buffering property to TextIOWrapper, and test for it
........
  r69817 | antoine.pitrou | 2009-02-20 14:45:50 -0600 (Fri, 20 Feb 2009) | 4 lines

  Allow IncrementalNewlineDecoder to take unicode objects as decoding input if the decoder parameter is None
  This will help rewriting StringIO to C
........
  r69827 | antoine.pitrou | 2009-02-20 19:00:30 -0600 (Fri, 20 Feb 2009) | 3 lines

  Rewrite most of StringIO in C. Some almost empty stubs remain to be converted.
........
  r69828 | antoine.pitrou | 2009-02-20 19:09:25 -0600 (Fri, 20 Feb 2009) | 3 lines

  Plug a leak, and remove an unused string
........
  r69829 | benjamin.peterson | 2009-02-20 20:02:28 -0600 (Fri, 20 Feb 2009) | 1 line

  this assertions makes more sense here
........
  r69830 | benjamin.peterson | 2009-02-20 20:03:04 -0600 (Fri, 20 Feb 2009) | 1 line

  PyModule_AddObject can fail; simplify this code with a macro
........
  r69839 | antoine.pitrou | 2009-02-21 12:54:01 -0600 (Sat, 21 Feb 2009) | 3 lines

  StringIO is now written entirely in C (and blazingly fast)
........
  r69841 | benjamin.peterson | 2009-02-21 14:05:40 -0600 (Sat, 21 Feb 2009) | 1 line

  split the Python implementation of io into another module and rewrite the tests to test both implementations
........
  r69842 | benjamin.peterson | 2009-02-21 14:10:00 -0600 (Sat, 21 Feb 2009) | 1 line

  closed is not a function
........
  r69843 | benjamin.peterson | 2009-02-21 14:13:04 -0600 (Sat, 21 Feb 2009) | 1 line

  fix __all__ test
........
  r69844 | benjamin.peterson | 2009-02-21 14:21:24 -0600 (Sat, 21 Feb 2009) | 1 line

  fix the rest of the Misc tests
........
  r69845 | benjamin.peterson | 2009-02-21 14:26:59 -0600 (Sat, 21 Feb 2009) | 1 line

  RawIOBase is better for FileIO
........
  r69848 | benjamin.peterson | 2009-02-21 15:33:53 -0600 (Sat, 21 Feb 2009) | 1 line

  fix some more tests broken by bag argument validation
........
  r69850 | benjamin.peterson | 2009-02-21 16:16:42 -0600 (Sat, 21 Feb 2009) | 1 line

  make the python IncrementalNewineDecoder support a None decoder
........
  r69852 | benjamin.peterson | 2009-02-21 16:36:09 -0600 (Sat, 21 Feb 2009) | 1 line

  fix a BlockingIOError.characters_written bug
........
  r69854 | benjamin.peterson | 2009-02-21 16:49:02 -0600 (Sat, 21 Feb 2009) | 1 line

  check whence
........
  r69860 | benjamin.peterson | 2009-02-21 17:42:50 -0600 (Sat, 21 Feb 2009) | 1 line

  fix some of these Misbehaving io tests
........
  r69865 | benjamin.peterson | 2009-02-21 18:59:52 -0600 (Sat, 21 Feb 2009) | 1 line

  don't use super here()
........
  r69866 | benjamin.peterson | 2009-02-21 19:05:28 -0600 (Sat, 21 Feb 2009) | 1 line

  use implementation specific classes
........
  r69868 | benjamin.peterson | 2009-02-21 22:12:05 -0600 (Sat, 21 Feb 2009) | 1 line

  use a more DRY friendly approach to injecting module contents into test classes
........
  r69872 | antoine.pitrou | 2009-02-22 13:39:45 -0600 (Sun, 22 Feb 2009) | 3 lines

  Sanitize destructor behaviour of IOBase. Now Python-defined attributes can be accessed from close().
........
  r69873 | antoine.pitrou | 2009-02-22 13:50:14 -0600 (Sun, 22 Feb 2009) | 4 lines

  Only set the internal fd after it has been checked to be valid
  (otherwise, the destructor will attempt to close it)
........
  r69885 | benjamin.peterson | 2009-02-22 15:30:14 -0600 (Sun, 22 Feb 2009) | 1 line

  convert some other tests to use both io implementations
........
  r69888 | antoine.pitrou | 2009-02-22 17:03:16 -0600 (Sun, 22 Feb 2009) | 3 lines

  Silence all exceptions when finalizing
........
  r69891 | benjamin.peterson | 2009-02-22 17:27:24 -0600 (Sun, 22 Feb 2009) | 1 line

  convert another test to test both io implementations
........
  r69892 | benjamin.peterson | 2009-02-22 17:32:15 -0600 (Sun, 22 Feb 2009) | 1 line

  help poor people like me to find their io tests (did I miss any?)
........
  r69893 | benjamin.peterson | 2009-02-22 17:37:56 -0600 (Sun, 22 Feb 2009) | 1 line

  put a big note in the test telling people to write tests for both implementations now
........
  r69911 | antoine.pitrou | 2009-02-23 13:57:18 -0600 (Mon, 23 Feb 2009) | 3 lines

  expose DEFAULT_BUFFER_SIZE again (fixes a bunch of test failures)
........
  r69913 | antoine.pitrou | 2009-02-23 14:10:30 -0600 (Mon, 23 Feb 2009) | 4 lines

  Do the cyclic garbage collection tests only on the C version.
  The Python version is helpless as it uses __del__.
........
  r69914 | antoine.pitrou | 2009-02-23 14:21:41 -0600 (Mon, 23 Feb 2009) | 3 lines

  Adapt test_largefile to test both implementations
........
  r69915 | antoine.pitrou | 2009-02-23 14:25:14 -0600 (Mon, 23 Feb 2009) | 3 lines

  One small failure
........
  r69916 | antoine.pitrou | 2009-02-23 14:28:33 -0600 (Mon, 23 Feb 2009) | 3 lines

  Add a comment, at BP's request
........
  r69963 | antoine.pitrou | 2009-02-25 09:42:59 -0600 (Wed, 25 Feb 2009) | 3 lines

  Add a test of ABC inheritance
........
  r70033 | antoine.pitrou | 2009-02-27 15:49:50 -0600 (Fri, 27 Feb 2009) | 3 lines

  The base classes now are ABCs.
........
  r70035 | benjamin.peterson | 2009-02-27 15:57:41 -0600 (Fri, 27 Feb 2009) | 1 line

  good house keeping
........
  r70038 | antoine.pitrou | 2009-02-27 17:05:23 -0600 (Fri, 27 Feb 2009) | 4 lines

  Make the buffer allocation overflow tests specific to the C implementation, since the Python implementation resizes its buffers when needed rather than allocating them up front.
........
  r70041 | benjamin.peterson | 2009-02-27 18:26:12 -0600 (Fri, 27 Feb 2009) | 1 line

  kill java naming for sanity
........
  r70042 | benjamin.peterson | 2009-02-27 18:28:53 -0600 (Fri, 27 Feb 2009) | 2 lines

  timingTest is superseded by iobench
........
  r70043 | antoine.pitrou | 2009-02-27 19:13:50 -0600 (Fri, 27 Feb 2009) | 3 lines

  Remove the last traces of java naming in test_io
........
  r70044 | antoine.pitrou | 2009-02-27 19:18:34 -0600 (Fri, 27 Feb 2009) | 3 lines

  Better resource cleanup
........
  r70045 | antoine.pitrou | 2009-02-27 19:29:00 -0600 (Fri, 27 Feb 2009) | 3 lines

  Remove dubious uses of super(), and fix one test
........
  r70046 | antoine.pitrou | 2009-02-27 19:31:00 -0600 (Fri, 27 Feb 2009) | 3 lines

  Bump up CHUNK_SIZE (no need to make the Python version look slower than it is)
........
  r70047 | benjamin.peterson | 2009-02-27 20:03:26 -0600 (Fri, 27 Feb 2009) | 1 line

  fix typo
........
  r70048 | benjamin.peterson | 2009-02-27 21:35:11 -0600 (Fri, 27 Feb 2009) | 1 line

  move code to a better place
........
  r70067 | benjamin.peterson | 2009-02-28 10:43:20 -0600 (Sat, 28 Feb 2009) | 4 lines

  1. make sure to undo buffered read aheads in BufferedRandom.seek()
  2. refill the buffer if have <= 0
  3. fix the last failing test_io test!
........
  r70068 | benjamin.peterson | 2009-02-28 10:57:50 -0600 (Sat, 28 Feb 2009) | 1 line

  define read1() on the python implementation's BufferedIOBase
........
  r70069 | benjamin.peterson | 2009-02-28 11:01:17 -0600 (Sat, 28 Feb 2009) | 1 line

  document read1() in BufferedIOBase
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  r70070 | benjamin.peterson | 2009-02-28 11:06:42 -0600 (Sat, 28 Feb 2009) | 1 line

  give credit where credit is due
........
  r70075 | antoine.pitrou | 2009-02-28 13:34:59 -0600 (Sat, 28 Feb 2009) | 3 lines

  Amaury's name
........
  r70112 | antoine.pitrou | 2009-03-02 17:11:55 -0600 (Mon, 02 Mar 2009) | 4 lines

  Looks like this is necessary in order to build cleanly under Windows
  (someone correct this if it's wrong, I'm no Windows user)
........
  r70133 | benjamin.peterson | 2009-03-03 15:23:32 -0600 (Tue, 03 Mar 2009) | 1 line

  fix test_newline_property on _pyio.StringIO
........
  r70135 | benjamin.peterson | 2009-03-03 15:47:30 -0600 (Tue, 03 Mar 2009) | 1 line

  fix typos and inconsistencies. thanks to Daniel Diniz
........
  r70140 | benjamin.peterson | 2009-03-03 16:21:10 -0600 (Tue, 03 Mar 2009) | 1 line

  add the test from #5266
........

svn+ssh://pythondev@svn.python.org/python/trunk

........
  r69846 | mark.dickinson | 2009-02-21 20:27:01 +0000 (Sat, 21 Feb 2009) | 2 lines

  Issue #5341: Fix a variety of spelling errors.
........

having been closed (for instance, a read() call could return some
previously buffered data). Patch by Dmitry Vasiliev.

Merged revisions 67889-67892,67895,67898,67904-67907,67912,67918,67920-67921,67923-67924,67926-67927,67930,67943 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

................
  r67889 | benjamin.peterson | 2008-12-20 19:04:32 -0600 (Sat, 20 Dec 2008) | 1 line

  sphinx.web is long gone
................
  r67890 | benjamin.peterson | 2008-12-20 19:12:26 -0600 (Sat, 20 Dec 2008) | 1 line

  update readme
................
  r67891 | benjamin.peterson | 2008-12-20 19:14:47 -0600 (Sat, 20 Dec 2008) | 1 line

  there are way too many places which need to have the current version added
................
  r67892 | benjamin.peterson | 2008-12-20 19:29:32 -0600 (Sat, 20 Dec 2008) | 9 lines

  Merged revisions 67809 via svnmerge from
  svn+ssh://pythondev@svn.python.org/sandbox/trunk/2to3/lib2to3

  ........
    r67809 | benjamin.peterson | 2008-12-15 21:54:45 -0600 (Mon, 15 Dec 2008) | 1 line

    fix logic error
  ........
................
  r67895 | neal.norwitz | 2008-12-21 08:28:32 -0600 (Sun, 21 Dec 2008) | 2 lines

  Add Tarek for work on distutils.
................
  r67898 | benjamin.peterson | 2008-12-21 15:00:53 -0600 (Sun, 21 Dec 2008) | 1 line

  compute DISTVERSION with patchlevel.py
................
  r67904 | benjamin.peterson | 2008-12-22 14:44:58 -0600 (Mon, 22 Dec 2008) | 1 line

  less attitude
................
  r67905 | benjamin.peterson | 2008-12-22 14:51:15 -0600 (Mon, 22 Dec 2008) | 1 line

  fix #4720: the format to PyArg_ParseTupleAndKeywords can now start with '|'
................
  r67906 | benjamin.peterson | 2008-12-22 14:52:53 -0600 (Mon, 22 Dec 2008) | 1 line

  add NEWS note
................
  r67907 | benjamin.peterson | 2008-12-22 16:12:19 -0600 (Mon, 22 Dec 2008) | 1 line

  silence compiler warning
................
  r67912 | georg.brandl | 2008-12-23 06:37:21 -0600 (Tue, 23 Dec 2008) | 2 lines

  Fix missing "svn" command.
................
  r67918 | georg.brandl | 2008-12-23 09:44:25 -0600 (Tue, 23 Dec 2008) | 2 lines

  Markup fix.
................
  r67920 | benjamin.peterson | 2008-12-23 14:09:28 -0600 (Tue, 23 Dec 2008) | 1 line

  use a global variable, so the compiler doesn't optimize the assignment out
................
  r67921 | benjamin.peterson | 2008-12-23 14:12:33 -0600 (Tue, 23 Dec 2008) | 1 line

  make global static
................
  r67923 | benjamin.peterson | 2008-12-24 09:10:27 -0600 (Wed, 24 Dec 2008) | 1 line

  #4736 BufferRWPair.closed shouldn't try to call another property as a function
................
  r67924 | benjamin.peterson | 2008-12-24 10:10:05 -0600 (Wed, 24 Dec 2008) | 1 line

  pretend exceptions don't exist a while longer
................
  r67926 | tarek.ziade | 2008-12-24 13:10:05 -0600 (Wed, 24 Dec 2008) | 1 line

  fixed #4400 : distutils .pypirc default generated file was broken.
................
  r67927 | benjamin.peterson | 2008-12-26 17:26:30 -0600 (Fri, 26 Dec 2008) | 1 line

  python version is included in file name now
................
  r67930 | hirokazu.yamamoto | 2008-12-26 22:19:48 -0600 (Fri, 26 Dec 2008) | 2 lines

  Issue #4740: Use HIGHEST_PROTOCOL in pickle test.
  (There is no behavior difference in 2.x because HIGHEST_PROTOCOL == 2)
................
  r67943 | alexandre.vassalotti | 2008-12-27 04:02:59 -0600 (Sat, 27 Dec 2008) | 2 lines

  Fix bogus unicode tests in pickletester.
................

Text I/O is still 10x to 100x slower than 2.x!

Stinner, with small tweaks by GvR.

svn+ssh://pythondev@svn.python.org/python/trunk

........
  r65791 | brett.cannon | 2008-08-17 17:36:52 -0700 (Sun, 17 Aug 2008) | 2 lines

  Remove two unneeded imports in 'io'.
........

Added fallback to _dummy_thread for OSs w/o thread support.

(thanks Christian!)

svn+ssh://pythondev@svn.python.org/python/trunk

........
  r65686 | antoine.pitrou | 2008-08-14 23:04:30 +0200 (jeu., 14 août 2008) | 3 lines

  Issue #3476: make BufferedReader and BufferedWriter thread-safe
........

Added the encoding, errors, line_buffering attribute to io.StringIO
make more compatible with TextIOWrapper's API.

Merged revisions 62998-63003,63005-63006,63009-63012,63014-63017,63019-63020,63022-63024,63026-63029,63031-63041,63043-63045,63047-63054,63056-63062 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

........
  r62998 | andrew.kuchling | 2008-05-10 15:51:55 -0400 (Sat, 10 May 2008) | 7 lines

  #1858 from Tarek Ziade:
  Allow multiple repositories in .pypirc; see http://wiki.python.org/moin/EnhancedPyPI
  for discussion.

  The patch is slightly revised from Tarek's last patch: I've simplified
  the PyPIRCCommand.finalize_options() method to not look at sys.argv.
  Tests still pass.
........
  r63000 | alexandre.vassalotti | 2008-05-10 15:59:16 -0400 (Sat, 10 May 2008) | 5 lines

  Cleaned up io._BytesIO.write().

  I am amazed that the old code, for inserting null-bytes, actually
  worked. Who wrote that thing? Oh, it is me... doh.
........
  r63002 | brett.cannon | 2008-05-10 16:52:01 -0400 (Sat, 10 May 2008) | 2 lines

  Revert r62998 as it broke the build (seems distutils.config is missing).
........
  r63014 | andrew.kuchling | 2008-05-10 18:12:38 -0400 (Sat, 10 May 2008) | 1 line

  #1858: add distutils.config module
........
  r63027 | brett.cannon | 2008-05-10 21:09:32 -0400 (Sat, 10 May 2008) | 2 lines

  Flesh out the 3.0 deprecation to suggest using the ctypes module.
........
  r63028 | skip.montanaro | 2008-05-10 22:59:30 -0400 (Sat, 10 May 2008) | 4 lines

  Copied two versions of the example from the interactive session.  Delete
  one.
........
  r63037 | georg.brandl | 2008-05-11 03:02:17 -0400 (Sun, 11 May 2008) | 2 lines

  reload() takes the module itself.
........
  r63038 | alexandre.vassalotti | 2008-05-11 03:06:04 -0400 (Sun, 11 May 2008) | 4 lines

  Added test framework for handling module renames.
  Factored the import guard in test_py3kwarn.TestStdlibRemovals into
  a context manager, namely test_support.CleanImport.
........
  r63039 | georg.brandl | 2008-05-11 03:06:05 -0400 (Sun, 11 May 2008) | 2 lines

  #2742: ``''`` is not converted to NULL in getaddrinfo.
........
  r63040 | alexandre.vassalotti | 2008-05-11 03:08:12 -0400 (Sun, 11 May 2008) | 2 lines

  Fixed typo in a comment of test_support.CleanImport.
........
  r63041 | alexandre.vassalotti | 2008-05-11 03:10:25 -0400 (Sun, 11 May 2008) | 2 lines

  Removed a dead line of code.
........
  r63043 | georg.brandl | 2008-05-11 04:47:53 -0400 (Sun, 11 May 2008) | 2 lines

  #2812: document property.getter/setter/deleter.
........
  r63049 | georg.brandl | 2008-05-11 05:06:30 -0400 (Sun, 11 May 2008) | 2 lines

  #1153769: document PEP 237 changes to string formatting.
........
  r63050 | georg.brandl | 2008-05-11 05:11:40 -0400 (Sun, 11 May 2008) | 2 lines

  #2809: elaborate str.split docstring a bit.
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  r63051 | georg.brandl | 2008-05-11 06:13:59 -0400 (Sun, 11 May 2008) | 2 lines

  Fix typo.
........
  r63052 | georg.brandl | 2008-05-11 06:33:27 -0400 (Sun, 11 May 2008) | 2 lines

  #2709: clarification.
........
  r63053 | georg.brandl | 2008-05-11 06:42:28 -0400 (Sun, 11 May 2008) | 2 lines

  #2659: add ``break_on_hyphens`` to TextWrapper.
........
  r63057 | georg.brandl | 2008-05-11 06:59:39 -0400 (Sun, 11 May 2008) | 2 lines

  #2741: clarification of value range for address_family.
........
  r63058 | georg.brandl | 2008-05-11 07:09:35 -0400 (Sun, 11 May 2008) | 2 lines

  #2452: timeout is used for all blocking operations.
........
  r63059 | andrew.kuchling | 2008-05-11 09:33:56 -0400 (Sun, 11 May 2008) | 2 lines

  #1792: Improve performance of marshal.dumps() on large objects by increasing
  the size of the buffer more quickly.
........
  r63060 | andrew.kuchling | 2008-05-11 10:00:00 -0400 (Sun, 11 May 2008) | 1 line

  #1858: re-apply patch for this, adding the missing files
........
  r63061 | benjamin.peterson | 2008-05-11 10:13:25 -0400 (Sun, 11 May 2008) | 2 lines

  Add the "until" command to pdb
........
  r63062 | georg.brandl | 2008-05-11 10:17:13 -0400 (Sun, 11 May 2008) | 2 lines

  Add some sentence endings.
........

Change suggested by Nick Coghlan.

Thank you, Guido, for noticing!

One of the codepaths of _BytesIO.read() returned a bytearray
object, by mistake, when it should always return a bytes object.
Interestingly, the fact this bug shown up probably means that
some platforms are not using the new C-accelerated io.BytesIO.