Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!mips!smsc.sony.com!dce
From: dce@smsc.sony.com (David Elliott)
Newsgroups: comp.unix.questions
Subject: BSD vs. SVR4 typehead flush after tty mode change
Message-ID: <1990Oct4.213623.27362@smsc.sony.com>
Date: 4 Oct 90 21:36:23 GMT
Sender: dce@smsc.sony.com (David Elliott)
Organization: Sony Microsystems Corp, San Jose, CA
Lines: 19

I execute the following command line:

	sleep 5 ; cat /etc/passwd | more > /dev/null

While the sleep is still running, I type "date" (followed
by RETURN) 3 times.

Under BSD, I get 3 date commands run.  Under RISC/OS on a MIPS M2000,
the same happens.  Under our SVR4 system, I get nothing -- the input
has disappeared.

Is there an stty setting that will fix this?  Is it just a difference
between the operating systems, or is it a problem with 'more' changing
the tty mode when it shouldn't?

I should also mention that similar things happen when I am getting
out of vi.  It's annoying to lose typeahead, and I generally
think a few seconds ahead of myself.  I guess I need faster
computers ;-)