Merged revisions 67384,67386-67387,67389-67390,67392,67399-67400,67403-67405,67426 via svnmerge from
svn+ssh://pythondev@svn.python.org/sandbox/trunk/2to3/lib2to3

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  r67384 | benjamin.peterson | 2008-11-25 16:13:31 -0600 (Tue, 25 Nov 2008) | 4 lines

  don't duplicate calls to start_tree()

  RefactoringTool.pre_order values now holds a list of the fixers while pre_order_mapping holds the dict.
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  r67386 | benjamin.peterson | 2008-11-25 16:44:52 -0600 (Tue, 25 Nov 2008) | 1 line

  #4423 fix_imports was still replacing usage of a module if attributes were being used
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  r67387 | benjamin.peterson | 2008-11-25 16:47:54 -0600 (Tue, 25 Nov 2008) | 1 line

  fix broken test
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  r67389 | benjamin.peterson | 2008-11-25 17:13:17 -0600 (Tue, 25 Nov 2008) | 1 line

  remove compatibility code; we only cater to 2.5+
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  r67390 | benjamin.peterson | 2008-11-25 22:03:36 -0600 (Tue, 25 Nov 2008) | 1 line

  fix #3994; the usage of changed imports was fixed in nested cases
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  r67392 | benjamin.peterson | 2008-11-26 11:11:40 -0600 (Wed, 26 Nov 2008) | 1 line

  simpilfy and comment fix_imports
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  r67399 | benjamin.peterson | 2008-11-26 11:47:03 -0600 (Wed, 26 Nov 2008) | 1 line

  remove more compatibility code
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  r67400 | benjamin.peterson | 2008-11-26 12:07:41 -0600 (Wed, 26 Nov 2008) | 1 line

  set svn:ignore
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  r67403 | benjamin.peterson | 2008-11-26 13:11:11 -0600 (Wed, 26 Nov 2008) | 1 line

  wrap import
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  r67404 | benjamin.peterson | 2008-11-26 13:29:49 -0600 (Wed, 26 Nov 2008) | 1 line

  build the fix_imports pattern in compile_pattern, so MAPPING can be changed and reflected in the pattern
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  r67405 | benjamin.peterson | 2008-11-26 14:01:24 -0600 (Wed, 26 Nov 2008) | 1 line

  stop ugly messages about runtime errors being from printed
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  r67426 | benjamin.peterson | 2008-11-28 16:01:40 -0600 (Fri, 28 Nov 2008) | 5 lines

  don't replace a module name if it is in the middle of a attribute lookup

  This fix also stops module names from being replaced if they are not in an attribute lookup.
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diff --git a/Lib/lib2to3/refactor.py b/Lib/lib2to3/refactor.py
index 4fe18ba..e7dd66e 100755
--- a/Lib/lib2to3/refactor.py
+++ b/Lib/lib2to3/refactor.py
@@ -123,8 +123,8 @@
                                     logger=self.logger)
         self.pre_order, self.post_order = self.get_fixers()
 
-        self.pre_order = get_headnode_dict(self.pre_order)
-        self.post_order = get_headnode_dict(self.post_order)
+        self.pre_order_mapping = get_headnode_dict(self.pre_order)
+        self.post_order_mapping = get_headnode_dict(self.post_order)
 
         self.files = []  # List of files that were or should be modified
 
@@ -290,13 +290,12 @@
         # Two calls to chain are required because pre_order.values()
         #   will be a list of lists of fixers:
         #   [[<fixer ...>, <fixer ...>], [<fixer ...>]]
-        all_fixers = chain(chain(*self.pre_order.values()),\
-                           chain(*self.post_order.values()))
+        all_fixers = chain(self.pre_order, self.post_order)
         for fixer in all_fixers:
             fixer.start_tree(tree, name)
 
-        self.traverse_by(self.pre_order, tree.pre_order())
-        self.traverse_by(self.post_order, tree.post_order())
+        self.traverse_by(self.pre_order_mapping, tree.pre_order())
+        self.traverse_by(self.post_order_mapping, tree.post_order())
 
         for fixer in all_fixers:
             fixer.finish_tree(tree, name)