Re: WinHugs and Unicode

On Fri, Sep 16, 2005 at 04:58:03PM +0100, Neil Mitchell wrote:
> In Windows both the WinHugs "fake" console and the standard console
> are already unicode compliant on NT/2K/XP and have wrapper functions
> such as wprintf which are unicode and tprintf which is either ASCII or
> Unicode depending on some #define's.

If you change the user-default ANSI code page, can it print out non-ASCII
Chars, and read them in?  (Identifiers are restricted to Latin-1, though.)

> How does Hugs deal with unicode, i.e. are the filenames etc. stored by
> the program as unicode, or is it just the Haskell elements that are
> Unicode.

Module filenames, no.  Filenames in H98 library calls are String,
which is Unicode.  String literals are byte-encoded Unicode, though.

> Attatched is a patch which includes the unicode compliant header along
> with commented out definitions for unicode in WinHugs. If you
> uncomment those definitions it will not work, but then I can work on
> converting files one by one and when they are all done hopefully a
> Unicode enabled Hugs on windows will result :)
> 
> This process should not alter the non unicode code paths at all, 
> beause of various defines in Windows.

I fear you may be opening a can of worms, and you may end up having to
change things everywhere.