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

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  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.
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  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.
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  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).
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  r63014 | andrew.kuchling | 2008-05-10 18:12:38 -0400 (Sat, 10 May 2008) | 1 line

  #1858: add distutils.config module
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  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.
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  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.
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  r63037 | georg.brandl | 2008-05-11 03:02:17 -0400 (Sun, 11 May 2008) | 2 lines

  reload() takes the module itself.
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  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.
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  r63039 | georg.brandl | 2008-05-11 03:06:05 -0400 (Sun, 11 May 2008) | 2 lines

  #2742: ``''`` is not converted to NULL in getaddrinfo.
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  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.
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  r63041 | alexandre.vassalotti | 2008-05-11 03:10:25 -0400 (Sun, 11 May 2008) | 2 lines

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

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

  #1153769: document PEP 237 changes to string formatting.
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  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.
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  r63052 | georg.brandl | 2008-05-11 06:33:27 -0400 (Sun, 11 May 2008) | 2 lines

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

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

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

  #2452: timeout is used for all blocking operations.
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  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.
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  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
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  r63061 | benjamin.peterson | 2008-05-11 10:13:25 -0400 (Sun, 11 May 2008) | 2 lines

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

  Add some sentence endings.
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1 files changed, 6 insertions, 6 deletions

diff --git a/Lib/io.py b/Lib/io.py
index d5c8dfe..207e428 100644
--- a/Lib/io.py
+++ b/Lib/io.py
@@ -813,14 +813,14 @@ class _BytesIO(BufferedIOBase):
         n = len(b)
         if n == 0:
             return 0
-        newpos = self._pos + n
-        if newpos > len(self._buffer):
+        pos = self._pos
+        if pos > len(self._buffer):
             # Inserts null bytes between the current end of the file
             # and the new write position.
-            padding = b'\x00' * (newpos - len(self._buffer) - n)
-            self._buffer[self._pos:newpos - n] = padding
-        self._buffer[self._pos:newpos] = b
-        self._pos = newpos
+            padding = b'\x00' * (pos - len(self._buffer))
+            self._buffer += padding
+        self._buffer[pos:pos + n] = b
+        self._pos += n
         return n
 
     def seek(self, pos, whence=0):