Merged revisions 67326,67498,67531-67532,67538,67553-67554,67556-67557 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

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  r67326 | benjamin.peterson | 2008-11-22 02:59:15 +0100 (Sat, 22 Nov 2008) | 1 line

  backport r67325: make FileIO.mode always contain 'b'
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  r67498 | raymond.hettinger | 2008-12-03 16:42:10 +0100 (Wed, 03 Dec 2008) | 1 line

  Backport r67478
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  r67531 | georg.brandl | 2008-12-04 19:54:05 +0100 (Thu, 04 Dec 2008) | 2 lines

  Add reference to enumerate() to indices example.
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  r67532 | georg.brandl | 2008-12-04 19:59:16 +0100 (Thu, 04 Dec 2008) | 2 lines

  Add another heapq example.
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  r67538 | georg.brandl | 2008-12-04 22:28:16 +0100 (Thu, 04 Dec 2008) | 2 lines

  Clarification to avoid confusing output with file descriptors.
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  r67553 | georg.brandl | 2008-12-05 08:49:49 +0100 (Fri, 05 Dec 2008) | 2 lines

  #4408: document regex.groups.
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  r67554 | georg.brandl | 2008-12-05 08:52:26 +0100 (Fri, 05 Dec 2008) | 2 lines

  #4409: fix asterisks looking like footnotes.
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  r67556 | georg.brandl | 2008-12-05 09:02:17 +0100 (Fri, 05 Dec 2008) | 2 lines

  #4441: improve doc for os.open() flags.
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  r67557 | georg.brandl | 2008-12-05 09:06:57 +0100 (Fri, 05 Dec 2008) | 2 lines

  Add an index entry for "subclassing immutable types".
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diff --git a/Modules/_fileio.c b/Modules/_fileio.c
index b9310f3..65cc99d 100644
--- a/Modules/_fileio.c
+++ b/Modules/_fileio.c
@@ -208,6 +208,8 @@
 			flags |= O_CREAT;
 			append = 1;
 			break;
+		case 'b':
+			break;
 		case '+':
 			if (plus)
 				goto bad_mode;
@@ -682,12 +684,12 @@
 {
 	if (self->readable) {
 		if (self->writable)
-			return "r+";
+			return "rb+";
 		else
-			return "r";
+			return "rb";
 	}
 	else
-		return "w";
+		return "wb";
 }
 
 static PyObject *