On Fri, Aug 31, 2007 at 11:31:38AM +0200, Andrea Rossato wrote: > Thanks for your kind attention, but I don't think it's a matter of > buffering (I indeed tried playing with hSetBuffering with no results).
That is because you need to change output buffering on both ends. I don't know about haskell, but stdio says that handles to tty's are line-buffered, stderr is not buffered and all other handles are fully buffered. Of course you can flush the handles instead. > Basically I'd like to write the equivalent of "expect", which talks to > interactive programs (with the difference the mine is supposed to talk > to a program I wrote, so I don't need to embed a domain specific > language in it). AFAIR expect uses pseudo-ttys (ptys) because in general one can't force a program to change it's output buffering mode, so forcing it to talk to a pair of terminals instead of fifos is used as a workaround. Have a look at pty(7). Cheers, -- Krzysztof Kościuszkiewicz Skype: dr.vee, Gadu: 111851, Jabber: [EMAIL PROTECTED] Mobile IRL: +353851383329, Mobile PL: +48783303040 "Simplicity is the ultimate sophistication" -- Leonardo da Vinci _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe