-- | Specify the help text for an option as a 'Text.PrettyPrint.ANSI.Leijen.Doc'
-- value.
helpDoc :: Maybe Doc -> Mod f a
helpDoc doc = optionMod $ \p -> p { propHelp = Chunk doc }
helpDoc :: Maybe Doc -> Mod f a
helpDoc doc = optionMod $ \p -> p { propHelp = Chunk doc }
helpDoc doc = optionMod $ \p -> p { propHelp = Chunk doc }