Re: [Expectperl-discuss] trouble with interact

[Ken I. <fn...@ua...>]

On Thu, Jul 13, 2006 at 10:52:46AM -0700, Austin Schutz wrote:
> On Thu, Jul 13, 2006 at 12:16:10AM -0800, Ken Irving wrote:
> > On Wed, Jul 12, 2006 at 12:27:44PM -0800, Ken Irving wrote:
> > > I'm flailing with an error message that occurs following the interact()
> > > method:
> > > ...
> > 
> > I guess it's a warning, showing up due to the -w flag:
> > 
> >   $ perl -MExpect -w -e 'Expect->new()->interact();' < /dev/null
> >   handle id(5) is not a tty. Not changing mode at /usr/share/perl5/Expect.pm line 376.
> >   handle id(5) is not a tty. Not changing mode at /usr/share/perl5/Expect.pm line 376.
> >   handle id(5) is not a tty. Not changing mode at /usr/share/perl5/Expect.pm line 376.
> > 
> > but not without it.  
> > 
> 
> 	iirc (and this has been several years) it's necessary to make sure
> ttys aren't echoing at each other when they interact, thus by default the
> echoing mode is changed when this occurs. This obviously won't work if you
> throw something other than a tty at it.
> 	It's probably safe to just turn warnings off around that block if the
> code is otherwise working. It's probably a reasonable warning to have. There
> may be cases where you expect to be working with a tty but aren't (script
> called from cron, etc.).

I can do that, but I get the same warnings even if I run the above command
from a tty, or at least from a linux console, in addition to an xterm.
Presumably there's something else that needs to be done, but I don't know
what it is.  Is the message meaningful?

Thanks,

Ken

-- 
Ken Irving, fn...@ua...