I'm pleased to announce the first release of ghci-haskeline. This package uses the GHC API to reimplement ghci with the Haskeline library as a backend. Haskeline is a library for line input in command-line programs, similar to readline or editline, which is written in Haskell and thus (hopefully) more easily integrated into other Haskell programs. To install, you can use cabal update && cabal install ghci-haskeline, or else download it from: http://hackage.haskell.org/cgi-bin/hackage-scripts/package/ghci-haskeline Haskeline is planned to be used officially with GHC in the 6.12 release: http://hackage.haskell.org/trac/ghc/ticket/2812 So the more testing that can be done ahead of time, the better! For more information about Haskeline or to file a bug or feature request, visit its trac: http://trac.haskell.org/haskeline Finally, a partial list of the benefits of ghci-haskeline over the readline/editline versions: - Full interactive interface on Windows. - Support for a wide variety of character encodings in line interaction (http://trac.haskell.org/haskeline/wiki/UnicodeSupport). Note that GHC source files are still required to be UTF-8. - Tab completion of Unicode identifiers and filenames. - Tab completion of quoted filenames within Haskell expressions. Best, -Judah