On Tue, Jan 13, 2009 at 6:03 AM, Mauricio
Haskeline is designed to remove the readline dependency, because Windows does not have readline. So rlwrap is useless there.
Ah, I hadn't considered Windows support--that makes sense. Thanks, that answers my questions.
AHH
One nice thing would be to write something like rlwrap that would work everywhere Haskell does. Even more sofisticated behavior could come from some comunication from the api, using standard OS facilities (like a file with an updated list of completions, or something more clever).
(For those interested: rlwrap is available in cygwin. It used to work very well on old ghci, when line editing wasn't available.)
This does sound useful; the main difficulty is that when a program has stdin piped from another process it may behaved differently. For example, ghci uses block buffering and doesn't print its prompt when stdin doesn't appear to be a terminal. The solution on POSIX is probably to use some sort of pseudo-terminal support; I don't know what the right thing to do on Windows is. The following post discusses those issues in a little more detail: http://www.haskell.org/pipermail/haskell-cafe/2008-May/042342.html -Judah