Is typeahead loss a generic ksh problem?

[Arthur David Olson]

Thanks to everyone who replied to the original posting.  The problem turned
out to be that if you run a command such as
	( sleep 5 ; echo hi ) | exit
the "echo hi" is terminated by a SIGPIPE signal.  Ksh (or at least the version
of ksh in use at elsie) waits for all elements of a pipeline to complete
before prompting again.  It noticed that the SIGPIPE death had occurred,
and assumed (in "reset_ttygrp", for those keeping score) that some tty cleanup
should be done.

The fix (in "await") was to change a
			reset_ttygrp(pw,w&LOBYTE);
call to
			if ((w&LOBYTE)==SIGPIPE)
				reset_ttygrp(pw,0);
			else	reset_ttygrp(pw,w&LOBYTE);
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