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Path: utzoo!linus!decvax!mit-athena!martillo
From: martillo@mit-athena.ARPA (Joaquim Martillo)
Newsgroups: net.emacs
Subject: Changes for CCA Emacs
Message-ID: <63@mit-athena.ARPA>
Date: Tue, 6-Nov-84 05:19:22 EST
Article-I.D.: mit-athe.63
Posted: Tue Nov  6 05:19:22 1984
Date-Received: Thu, 8-Nov-84 04:38:15 EST
Organization: MIT, Project Athena, Cambridge, Ma.
Lines: 72

The latest version of CCA Emacs (162.45z) which we received at MIT did
not run properly unless stty tabs was first executed.  This requirement
is a pain in the neck and is eliminated by adding a line in e_io.c in
the function  uncook().

After

	nsgb.flags |= RAW;

add

	nsgb.flags &= ~XTABS;

If you are running Berkeley 4.2BSD in a networked environment and wish
to have both Start/Stop processing when not running emacs and also whish
to use ^S (incremental search) and ^Q (quote character) when running
emacs over the network, changes must be made in uncook() and cook(0 in
e_io.c.

In uncook() change

	#if SUN
		ztch.t_startc = ztch.t_stopc = '\237';
		ioctl(1, TIOCSETC, &ztch);
	#end

to

	#if SUN
		ztch.t_startc = ztch.t_stopc = '\237';
		ioctl(1, TIOCSETC, &ztch);
	#else
		
		ztch.t_startc = ztch.t_stopc = -1;

		ioctl(1, TIOCSETC, &ztch);

	#end
.

When the start/stop characters are set to -1, the slave part of the
pseudoterminal driver informs the master, and rlogind reads a control
byte which says start/stop processing has been turned off.  rlogind then
sends an out of band message back to the local rlogin process to turn
off start/stop processsing.

To turn start/stop processing back on on leaving emacs, the following
change in cook() in e_io.c should be made.

Change the conditional execution of ioctl(1, TIOCSETC, &tch) for the RAW
mode case for SUN to an uncondition execution in RAW mode for all
systems.

The code should read:

	if(cbreak && (strncmp(TERM, "aaa", 3) || sgb.sg_ospeed != EXTA)){
		ioctl(1, TIOCSETC, &tch);
		ioctl(1, TIOCSLTC, &ltch);
	}

	else

	{

		ioctl(1, TIOCSETC, &tch);

	}
.

This again causes the out of band message to be sent back to the local
rlogin -- this time to turn back on start/stop processing.