Re: BUG #6510: A simple prompt is displayed using wrong charset

On Sun, Oct 14, 2012 at 12:10:42PM -0400, Tom Lane wrote:
> Alexander Law <exclusion(at)gmail(dot)com> writes:
>
> > +#ifdef WIN32
> > + termin = fopen("CONIN$", "r");
> > + termout = fopen("CONOUT$", "w+");
> > +#else
> > termin = fopen(DEVTTY, "r");
> > termout = fopen(DEVTTY, "w");
> > +#endif
> > if (!termin || !termout
>
> My immediate reaction to this patch is "that's a horrible kluge, why
> shouldn't we change the definition of DEVTTY instead?"

You could make DEVTTY_IN, DEVTTY_IN_MODE, DEVTTY_OUT and DEVTTY_OUT_MODE to
capture all the differences. That doesn't strike me as an improvement, and no
other function would use them at present. As I explained in my reply to
Alexander, we should instead remove DEVTTY.

> Is there a
> similar issue in other places where we use DEVTTY?

Yes. However, the other use of DEVTTY arises only with readline support, not
typical of native Windows builds.

> Also, why did you change the termout output mode, is that important
> or just randomness?

It's essential:
http://archives.postgresql.org/message-id/20121010110555.GA21405@tornado.leadboat.com

nm