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Merge lp:bzr/2.2.

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bzrlib/tree.py
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from bzrlib.inventory import InventoryFile
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from bzrlib.inter import InterObject
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from bzrlib.osutils import fingerprint_file
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import bzrlib.revision
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from bzrlib.symbol_versioning import deprecated_function, deprecated_in
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from bzrlib.trace import note
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    def iter_changes(self, from_tree, include_unchanged=False,
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                     specific_files=None, pb=None, extra_trees=None,
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                     require_versioned=True, want_unversioned=False):
 
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        """See InterTree.iter_changes"""
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        intertree = InterTree.get(from_tree, self)
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        return intertree.iter_changes(include_unchanged, specific_files, pb,
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            extra_trees, require_versioned, want_unversioned=want_unversioned)
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            parent_keys = [(file_id, self._file_revision(t, file_id)) for t in
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                self._iter_parent_trees()]
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            vf.add_lines((file_id, last_revision), parent_keys,
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                         self.get_file(file_id).readlines())
 
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                         self.get_file_lines(file_id))
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            repo = self.branch.repository
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            base_vf = repo.texts
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        else:
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            yield child.file_id
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    def lock_read(self):
 
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        """Lock this tree for multiple read only operations.
 
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        :return: A bzrlib.lock.LogicalLockResult.
 
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        """
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        pass
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    def revision_tree(self, revision_id):