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Viewing changes to bzrlib/rules.py

Merge bzr.dev 5848, bringing the code up to date.

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bzrlib/rules.py
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        """
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        raise NotImplementedError(self.get_selected_items)
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    def get_single_value(self, path, preference_name):
 
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        """Get a single preference for a single file.
 
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        :returns: The string preference value, or None.
 
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        """
 
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        for key, value in self.get_selected_items(path, [preference_name]):
 
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            return value
 
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        return None
 
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class _IniBasedRulesSearcher(_RulesSearcher):
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