From: Piero Serini <piero@strider.st.dsi.unimi.it>

From: Piero Serini <piero@strider.st.dsi.unimi.it>
Message-Id: <199312091710.SAA00967@strider.st.dsi.unimi.it>
Subject: /bin/stty willnot "undef" cchars

Description:
	running /bin/stty to change a cchar from its value to <undef>
	willnot work, and will set that cchar's value to "u".
Repeat-By:
	$ stty discard undef
	$ stty -a
	...
	cchars: discard = u ; dsusp = ^O; eof = ^D; eol = <undef>;