Index - U
| unA | Options.Applicative.Arrows |
| unChunk | Options.Applicative.Help.Chunk, Options.Applicative.Help |
| uncons | Options.Applicative.Internal |
| underline | Options.Applicative.Help.Pretty, Options.Applicative.Help |
| UnexpectedError | Options.Applicative.Types, Options.Applicative.Internal, Options.Applicative.Builder, Options.Applicative |
| UnknownError | Options.Applicative.Types, Options.Applicative.Internal, Options.Applicative.Builder, Options.Applicative |
| unReadM | Options.Applicative.Types |
| unwrapArrow | Options.Applicative |
| unwrapMonad | Options.Applicative |
| usageHelp | Options.Applicative.Help.Core, Options.Applicative.Help |