Haskell Hierarchical Libraries (readline package) Source code Contents Index

System.Console.SimpleLineEditor Portability non-portable (unix-specific at the moment) Stability experimental Maintainer libraries@haskell.org

Description

A simple line editor, using the GNU readline library if available, or a small emulation otherwise.

Synopsis

initialise :: IO () restore :: IO () getLineEdited :: String -> IO (Maybe String) delChars :: String -> IO ()

Documentation

initialise :: IO ()

Set up the environment so that the terminal passes characters directly into the Haskell program, for immediate interpretation by the line editor.

restore :: IO ()

Restore the environment so that the terminal is usable in normal mode once again.

getLineEdited :: String -> IO (Maybe String)

delChars :: String -> IO ()

Remove the given string from immediately behind (to the left of) the current cursor position.

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