Ahn, Ki Yung wrote: > What I mean by getCh is the non-buffered non-echoed version of getChar, > which Hugs used to provided as an extension but not any more. > > Is there any way to have a non-buffered non-echoed single character > input function on MS Windows command line using only the libraries in > the MS Windows distribution packages of either GHC or Hugs? > > The reason to why this is important for me is because I am translating > Graham Hutton's "Programming in Haskell" into Korean (soon to be > published), which illustrates interactive programming with the example > of a calculator that responds instantly for every keystroke of numbers > and arithmetic operations running on text mode. It is very important to > consider the readers who only have access to MS Windows systems, because > Korean OS market share is completely skewed towards MS Windows for very > embarrassing reasons that I do not even want to mention. And, isn't GHC > developed in MSR anyway? :-) > > > I remember that this is an old problem for both of the two most widely > used Haskell implementation, Hugs and GHC. > > In ghc 6.8 getChar had a bit strange behavior. As far as I remember it > always worked as if it were NoBuffering. Fortunately, in the recently > released ghc 6.10, this has been fixed. We now actually have to set the > buffering mode to NoBuffering with hSetBufferring to get the > non-buffered behavior of getChar. But, it still isn't working on MS > Windows.
Here's the ticket: http://hackage.haskell.org/trac/ghc/ticket/2189 This needs somebody familiar with the intricacies of Windows Consoles to fix. Any takers? Cheers, Simon _______________________________________________ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
