Shh.Prompt

This module provides utility functions for creating prompts. Useful if you want to use Shh and GHCi as a shell.

Documentation

type PromptFn

Arguments

 = [String]

names of the modules currently in scope

-> Int

line number (as referenced in compiler messages) of the current prompt

-> IO String

The type of GHCi prompt functions

formatPrompt :: String -> PromptFn

Format a prompt line suitable for use with Shh.

This also calls initInteractive, which is required for a good user experience when using shh as a shell.

The format of the prompt uses the "%" character as an escape mechanism, allowing for the substitution of various values into the prompt.

• %% -> %

• %u -> current user

• %w -> current directory

• %h -> hostname

• %t -> HH:MM:SS

Use it by importing Shh.Prompt in your .ghci or $SHH_DIR/init.ghci files and :set prompt-function formatPrompt "%u@%h:%w$ "