Redirecting stdin/stdout/stderr in embedded environment

[Paul Moore <pf_moore@...>]

I have an application into which I want to embed Lua. However, the 
application does some (quite legitimate) manipulation of the Windows 
standard handles (STD_INPUT_HANDLE, STD_OUTPUT_HANDLE, 
STD_ERROR_HANDLE). As a result, although the concepts of stdin/out/err 
are completely legitimate, the C stdin/out/err file handles don't point 
to the right place.

What I'd like to do is to make the Lua concept of standard IO point at 
different (FILE *)'s, in such a way that all Lua IO (print, io.stdin, 
error messages, etc, etc) goes to my own handles. Is there a way of 
doing this?

So, I'd have for example:

    FILE *my_stdin = /* something appropriate here */;
    FILE *my_stdout = /* something appropriate here */;
    FILE *my_stderr = /* something appropriate here */;

    lua_RedirectIO(my_stdin, my_stdout, my_stderr);

I specifically don't want to overwrite (in particular, close) the 
original stdin/out/err, as that causes other issues with the hosting 
application.

Oddly, it appears that io.output() doesn't affect print, otherwise that 
would be an option. Maybe I could set io.output and override print - but 
how can I be sure I've caught everything?

Can anyone offer any suggestions? I've searched the mailing list 
archives, and was surprised to find no hints there.

Thanks,
Paul.