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Fix migrate_preferences to allow downgrades
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@ -145,14 +145,12 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
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# Migrate saved search and user categories to db preference scheme
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def migrate_preference(name, default):
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obsolete = '###OBSOLETE--DON\'T USE ME###'
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ans = self.prefs.get(name, None)
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if ans is None:
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ans = prefs[name]
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if ans in (None, obsolete):
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if ans is None:
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ans = default
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prefs[name] = obsolete
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self.prefs[name] = ans
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prefs[name] = self.prefs[name] = ans
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migrate_preference('user_categories', {})
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migrate_preference('saved_searches', {})
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