Personal tools

GHCi in colour

From HaskellWiki

Revision as of 17:17, 14 December 2006 by Malcolm (Talk | contribs)

Jump to: navigation, search

This page documents efforts to colourise GHCi output.

Contents

1 Example

   Colour-ghci.png

Or a type error:

   Coloured-error.png

Output like this would be the result of running, for example:

   ghci --colour

and would appear in the console/xterm as ansi terminal coloured output.

2 Implementation

2.1 Using HsColour

An existing tool, HsColour, could be modified to operate interactively. In fact, HsColour is already interactive, and with a small patch added on 2006-12-14 to control ouput buffering better, this works relatively nicely:

   ghci 2>&1 | HsColour -tty

2.2 GuiHaskell

Neil Mitchell has a prototype gui haskell wrapper, based on gtk. Does this contain a reasonable ghci wrapper we could steal?


If you have an idea of how to do this nicely, add your proposal here.