.\" authorization. *
.\"***************************************************************************
.\"
-.\" $Id: tset.1,v 1.47 2017/01/07 22:59:51 tom Exp $
+.\" $Id: tset.1,v 1.52 2017/11/20 01:27:53 tom Exp $
.TH @TSET@ 1 ""
.ie \n(.g .ds `` \(lq
.el .ds `` ``
.ie \n(.g .ds '' \(rq
.el .ds '' ''
.de bP
-.IP \(bu 4
+.ie n .IP \(bu 4
+.el .IP \(bu 2
..
.SH NAME
\fB@TSET@\fR, \fB@RESET@\fR \- terminal initialization
.bP
standard input and
.bP
-ultimately \*(lq/dev/tty\*(rq
+ultimately \*(``/dev/tty\*(''
.PP
to obtain terminal settings.
Having retrieved these settings, \fB@TSET@\fP remembers which
any exclamation marks (\*(``!\*('').
.SH HISTORY
.PP
-A \fBreset\fP command appeared in 2BSD (1979), written by Kurt Shoens.
+A \fBreset\fP command appeared in 2BSD (April 1979), written by Kurt Shoens.
+This program set the \fIerase\fP and \fIkill\fP characters
+to \fB^H\fP (backspace) and \fB@\fP respectively.
+Mark Horton improved that in 3BSD (October 1979), adding
+\fIintr\fP, \fIquit\fP, \fIstart\fP/\fIstop\fP and \fIeof\fP characters
+as well as changing the program to avoid modifying any user settings.
+.PP
+Later in 4.1BSD (December 1980),
+Mark Horton added a call to the \fBtset\fP program
+using the \fB\-I\fP and \fB\-Q\fP options, i.e.,
+using that to improve the terminal modes.
+With those options,
+that version of \fBreset\fP did not use the termcap database.
.PP
A separate \fBtset\fP command was provided in 2BSD by Eric Allman.
-While the oldest published source (from 1979) provides both programs,
+While the oldest published source (from 1979)
+provides both \fBtset\fP and \fBreset\fP,
Allman's comments in the 2BSD source code indicate
that he began work in October 1977,
continuing development over the next few years.
.PP
-In September 1980, Eric Allman modified \fBtset\fP to provide a \*(lqreset\*(rq
-feature when the program was invoked as \fBreset\fP.
+In September 1980, Eric Allman modified \fBtset\fP,
+adding the code from the existing \*(``reset\*(''
+feature when \fBtset\fP was invoked as \fBreset\fP.
+Rather than simply copying the existing program,
+in this merged version, \fBtset\fP used the termcap database
+to do additional (re)initialization of the terminal.
This version appeared in 4.1cBSD, late in 1982.
.PP
+Other developers (e.g., Keith Bostic and Jim Bloom)
+continued to modify \fBtset\fP until 4.4BSD was released in 1993.
+.PP
The \fBncurses\fR implementation
was lightly adapted from the 4.4BSD sources for a terminfo environment by Eric
S. Raymond <esr@snark.thyrsus.com>.
is always an alias for \fBtset\fP.
.PP
The \fB@TSET@\fR utility provides for backward-compatibility with BSD
-environments (under most modern UNIXes, \fB/etc/inittab\fR and \fIgetty\fR(1)
+environments (under most modern UNIXes, \fB/etc/inittab\fR and \fBgetty\fR(1)
can set \fBTERM\fR appropriately for each dial-up line; this obviates what was
\fB@TSET@\fR's most important use). This implementation behaves like 4.4BSD
\fBtset\fP, with a few exceptions specified here.
terminal capability database
.SH SEE ALSO
.hy 0
-csh(1),
-sh(1),
-stty(1),
-curs_terminfo(3X),
-tty(4),
-terminfo(5),
-ttys(5),
-environ(7)
+\fBcsh\fP(1),
+\fBsh\fP(1),
+\fBstty\fP(1),
+\fBcurs_terminfo\fP(3X),
+\fBtty\fP(4),
+\fBterminfo\fP(5),
+\fBttys\fP(5),
+\fBenviron\fP(7)
.hy
.PP
This describes \fBncurses\fR