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From: postmast@cnetlu.UUCP
Newsgroups: comp.unix.wizards
Subject: Tty characters 'undefined' value revisited
Message-ID: <15@cnetlu.UUCP>
Date: Wed, 18-Feb-87 13:24:38 EST
Article-I.D.: cnetlu.15
Posted: Wed Feb 18 13:24:38 1987
Date-Received: Thu, 19-Feb-87 20:56:19 EST
Sender: postmast@cnetlu.UUCP
Lines: 19


A couple of weeks ago, I submitted an article discussing a problem with
the 4.xBSD tty characters (<ttychars.h>, struct ttychars). Basically,
the problem is that the 4.3BSD documentation says that a value of -1
means 'undefined', but our compilers generate unsigned characters.

The general concensus of the responses I got is that the ttychars
structure should be changed so that all of the members are shorts or
ints instead of chars.

Can anyone think of a reason NOT to do this? Are there places where
these values are expected to be chars, and will broken by this change?

-- 
			David Elliott

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