[comp.emacs] Problem with ptys and GNU Emacs 18.53 on Amdahl UTS

wilber@alice.UUCP (Bob Wilber) (04/01/89)

I've been trying to bring up GNU Emacs 18.53 on an Amdahl UTS system.  It has
ptys so I defined HAVE_PTYS, and I've tried compiling both with and without
SYSV_PTYS defined.

The problem: I do "M-x shell" and a shell buffer with a prompt ($) appears but
Emacs then hangs completely.  Input to the shell doesn't work and Emacs
commands like C-x C-c fail too.  In fact I have to break my login connection to
get out of "wedged mode".

Stepping through with sdb I find that the ptyp/ttyp pair is successfully opened
and the child process is successfully spawned.

Does anyone know what the problem is?  If anyone has succeeded in getting ptys
to work with Emacs under Amdahl UTS I'd like to know how you did it.

Bob Wilber   wilber@research.att.com