[GRASS-dev] d.save parser issue

[Glynn Clements]

Markus Neteler wrote:

> there seems to be a parser issue in GRASS 6 with d.save, it no longer
> redirects to a file (out=... might be even more compliant with our current
> user community).
> 
> It does so with this change:
> --- main.c      (revision 41103)
> +++ main.c      (working copy)
> @@ -154,7 +154,7 @@
>         _("Only map objects without extra header and tailer");
>      only_object->answer = 0;
> 
> -    if (G_parser(argc, argv))
> +    if (argc > 1 && G_parser(argc, argv))
>         exit(EXIT_FAILURE);
> 
> but then the GUI no longer comes up. Is there any possibility
> to check if the user uses redirection - pop up GUI otherwise?

You can check whether stdout is a tty with isatty(1). AFAIK, you can't
portably distinguish stdout being a file from stdout being a pipe.
Also, the MSys rxvt isn't a tty according to Windows' isatty().

-- 
Glynn Clements <glynn at gclements.plus.com>