Re: strange char echo

[Thomas Dickey]

On Fri, 6 Nov 2009, Bryan Christ wrote:

> Now that I think of it, I've only seen this problem when I try to run my
> software on a remote systems via SSH.  I just tried to reproduce it
> locally and couldn't.  The problem manifests 9 out of 10 times on remote
> connections.  When I tried it 10 times locally, 100% pass.
>
> Thoughts?

just guessing - ssh may not be passing the ioctl information along
fast enough to make it look as if it succeeded.

I'd investigate it by building the application with ncurses' tracing
turned on (normally a feature of the debug-library...).

> On Thu, 2009-11-05 at 23:56 +0000, Thomas Dickey wrote:
> > On Thu, 5 Nov 2009, Bryan Christ wrote:
> >
> > > does anyone know what might cause characters to be echoed to the screen
> > > even though noecho() was called at startup?
> >
> > aside from a new bug report?
> >
> > It's possible that the ioctl to disable echoing is failing, e.g., if
> > stdout is redirected.
> >
> > (n)curses disables echo at initialization, and simulates the echo/noecho
> > behavior.

--
Thomas E. Dickey
http://invisible-island.net
ftp://invisible-island.net