option package:pandoc

option :: forall s (m :: Type -> Type) t a u . Stream s m t => a -> ParsecT s u m a -> ParsecT s u m a

option x p tries to apply parser p. If p fails without consuming input, it returns the value x, otherwise the value returned by p.

priority  = option 0 (do{ d <- digit
; return (digitToInt d)
})

options :: [OptDescr (Opt -> ExceptT OptInfo IO Opt)]

pandoc Text.Pandoc.App

A list of functions, each transforming the options data structure in response to a command-line option.

optionMaybe :: forall s (m :: Type -> Type) t u a . Stream s m t => ParsecT s u m a -> ParsecT s u m (Maybe a)

pandoc Text.Pandoc.Parsing

optionMaybe p tries to apply parser p. If p fails without consuming input, it return Nothing, otherwise it returns Just the value returned by p.

optional :: forall s (m :: Type -> Type) t u a . Stream s m t => ParsecT s u m a -> ParsecT s u m ()

pandoc Text.Pandoc.Parsing

optional p tries to apply parser p. It will parse p or nothing. It only fails if p fails after consuming input. It discards the result of p.

module Text.Pandoc.Options

pandoc

Data structures and functions for representing parser and writer options.

parseOptions :: [OptDescr (Opt -> ExceptT OptInfo IO Opt)] -> Opt -> IO (Either OptInfo Opt)

pandoc Text.Pandoc.App

parseOptionsFromArgs :: [OptDescr (Opt -> ExceptT OptInfo IO Opt)] -> Opt -> String -> [String] -> IO (Either OptInfo Opt)

pandoc Text.Pandoc.App

PandocOptionError :: Text -> PandocError

pandoc Text.Pandoc.Error

envReaderOptions :: Environment -> ReaderOptions

pandoc Text.Pandoc.Filter

envWriterOptions :: Environment -> WriterOptions