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Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ames!lll-winken!uunet!cbmvax!grr
From: grr@cbmvax.UUCP (George Robbins)
Newsgroups: comp.unix.ultrix,comp.unix.questions
Subject: Re: Ultrix cbreak (curses) missing?
Keywords: cbreak curses ultrix
Message-ID: <6745@cbmvax.UUCP>
Date: 3 May 89 04:02:51 GMT
References: <172@larry.sal.wisc.edu>
Reply-To: grr@cbmvax.UUCP (George Robbins)
Organization: Commodore Technology, West Chester, PA
Lines: 32

In article <172@larry.sal.wisc.edu> jwp@larry.sal.wisc.edu (Jeffrey W Percival) writes:
> I am running Ultrix 2.2 and 3.0, and noticed that although
> cbreak and nocbreak are mentioned in the curses man pages,
> they do not exist in /lib/libcurses.a!
> 
> Is this an error?  Where can I get them?  Have they been
> displaced by some other call?

Traditionally, BSD has used "crmode()" for this purpose.  In the 4.3BSD
curses.h header file, cbreak and crmode are made equivalent.  Apparently,
the DEC folks haven't implemented this change.

There is also a long standing "bug" with Ultrix curses that shows up if
you try to make the net.sources "sc" spread sheet program under Ultrix.
If you do it under 4.3 it works fine, and the 4.3 executable works fine
with Ultrix, but if you do the compile under Ultrix, you get this intersting
diagonal effect instead of columns.  It may be fixed in 3.0, I don't know...

Apparently some confused person at DEC tried to "fix" some other "bug" he
perceived with curses, but broke the proper operation...  Adding the
following lines to the end of sc.h (or curses.h 8-) backs out the screwup...

#ifdef ultrix
#undef nl
#undef nonl
#define nl()	 (_tty.sg_flags |= CRMOD,_pfast = _rawmode,stty(_tty_ch, &_tty))
#define nonl()	 (_tty.sg_flags &= ~CRMOD, _pfast = TRUE, stty(_tty_ch, &_tty))
#endif
-- 
George Robbins - now working for,	uucp: {uunet|pyramid|rutgers}!cbmvax!grr
but no way officially representing	arpa: cbmvax!grr@uunet.uu.net
Commodore, Engineering Department	fone: 215-431-9255 (only by moonlite)