Hi, fyi, I wrote a patch that improves the readline command completion support of hugs. It is available at http://hackage.haskell.org/trac/hugs/ticket/61 . I.e.: - added completion of function names and constructors - added completion of command names (:<cmd>) - added completion of module names (e.g. after :browse , etc.) - only do filename completion where it makes sense (e.g. after :load , etc.) - expand use of tilde (~) in filenames (previously it was completed but not recognized by hugs) - read and write the history from/to ~/.hugs_history - make hugs recognize :help Best regards Georg Sauthoff