I think I can see where you are headed with this,
but I didn't get your example to work yet.
Your idea would be especially useful on systems
with firewall constraints that
do not allow X Window traffic to pass from the
web server to the developer's X server.
This is what I tried:
I used telnet to log onto the web server,
and made a little cgi program that used your code.
I set the TTY variable to be the same as the
device used by my telnet window. I used chmod to open
up read and write priviledges on the TTY device for
the telnet window.
I invoked the CGI from my web browser and I saw the
prompt for the debugger come up in my telnet window.
But when I typed a debugger command, the command went
to the shell instead of going to the debugger.
So the debugger commands weren't executed, and the
CGI program hung.
It should work perfectly the first time! - toma