Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!watmath!clyde!rutgers!mit-eddie!genrad!decvax!decwrl!pyramid!prls!mips!dce
From: dce@mips.UUCP
Newsgroups: comp.unix.wizards,comp.unix.questions
Subject: Tty characters 'undefined' value revisited
Message-ID: <152@quacky.mips.UUCP>
Date: Mon, 26-Jan-87 12:57:45 EST
Article-I.D.: quacky.152
Posted: Mon Jan 26 12:57:45 1987
Date-Received: Sat, 7-Feb-87 11:03:48 EST
Reply-To: dce@quacky.UUCP (David Elliott)
Organization: MIPS Computer Systems, Sunnyvale, CA
Lines: 17
Xref: watmath comp.unix.wizards:837 comp.unix.questions:920


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

UUCP: 	{decvax,ucbvax,ihnp4}!decwrl!mips!dce, DDD:  	408-720-1700