enumerate :: Parser Command
enumerate = string "enumerate" *> many1 space *> 
            (Enumerate <$> enumerationTarget <*> optionMaybe filterSpec)
enumerate :: Parser Command
enumerate = string "enumerate" *> many1 space *> 
            (Enumerate <$> enumerationTarget <*> optionMaybe filterSpec)
enumerate = string "enumerate" *> many1 space *> 
            (Enumerate <$> enumerationTarget <*> optionMaybe filterSpec)