haskeline- A command-line interface for user input, written in Haskell.Source codeContentsIndex

This module provides a low-level API to the line history stored in the InputT monad transformer.

For most application, it should suffice to instead use the following Settings flags:

  • autoAddHistory: add nonblank lines to the command history (True by default).
  • historyFile: read/write the history to a file before and after the line input session.

If you do want custom history behavior, you may need to disable the above default setting(s).

data History
emptyHistory :: History
addHistory :: String -> History -> History
historyLines :: History -> [String]
readHistory :: FilePath -> IO History
writeHistory :: FilePath -> History -> IO ()
stifleHistory :: Maybe Int -> History -> History
stifleAmount :: History -> Maybe Int
data History Source
show/hide Instances
emptyHistory :: HistorySource
addHistory :: String -> History -> HistorySource
historyLines :: History -> [String]Source
The input lines stored in the history (newest first)
readHistory :: FilePath -> IO HistorySource
Reads the line input history from the given file. Returns emptyHistory if the file does not exist or could not be read.
writeHistory :: FilePath -> History -> IO ()Source
Writes the line history to the given file. If there is an error when writing the file, it will be ignored.
stifleHistory :: Maybe Int -> History -> HistorySource
Limit the number of lines stored in the history.
stifleAmount :: History -> Maybe IntSource
The maximum number of lines stored in the history. If Nothing, the history storage is unlimited.
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