.\" authorization. *
.\"***************************************************************************
.\"
-.\" $Id: tput.1,v 1.51 2017/01/14 20:49:40 tom Exp $
+.\" $Id: tput.1,v 1.56 2017/11/18 23:51:17 tom Exp $
.TH @TPUT@ 1 ""
.ds d @TERMINFO@
.ds n 1
.ie \n(.g .ds '' \(rq
.el .ds '' ''
.de bP
-.IP \(bu 4
+.ie n .IP \(bu 4
+.el .IP \(bu 2
..
.SH NAME
\fB@TPUT@\fR, \fBreset\fR \- initialize a terminal or query terminfo database
.SH SYNOPSIS
\fB@TPUT@\fR [\fB\-T\fR\fItype\fR] \fIcapname\fR [\fIparameters\fR]
.br
-\fB@TPUT@\fR [\fB\-T\fR\fItype\fR] \fBclear\fR
+\fB@TPUT@\fR [\fB\-T\fR\fItype\fR] [\fB\-x\fP] \fBclear\fR
.br
\fB@TPUT@\fR [\fB\-T\fR\fItype\fR] \fBinit\fR
.br
and the \fIcapname\fR associated with each, see \fBterminfo\fR(5).
.SS Options
.TP
-\fB\-T\fR\fItype\fR
-indicates the \fItype\fR of terminal.
-Normally this option is
-unnecessary, because the default is taken from the environment
-variable \fBTERM\fR.
-If \fB\-T\fR is specified, then the shell
-variables \fBLINES\fR and \fBCOLUMNS\fR will also be ignored.
-.TP
\fB\-S\fR
allows more than one capability per invocation of \fB@TPUT@\fR. The
capabilities must be passed to \fB@TPUT@\fR from the standard input
meaning of the \fB0\fR and \fB1\fR boolean and string exit codes (see the
EXIT CODES section).
.IP
-Again, \fB@TPUT@\fR uses a table and the presence of parameters in its input
+Because some capabilities may use
+\fIstring\fP parameters rather than \fInumbers\fP,
+\fB@TPUT@\fR uses a table and the presence of parameters in its input
to decide whether to use \fBtparm\fR(3X),
and how to interpret the parameters.
.TP
+\fB\-T\fR\fItype\fR
+indicates the \fItype\fR of terminal.
+Normally this option is
+unnecessary, because the default is taken from the environment
+variable \fBTERM\fR.
+If \fB\-T\fR is specified, then the shell
+variables \fBLINES\fR and \fBCOLUMNS\fR will also be ignored.
+.TP
\fB\-V\fR
reports the version of ncurses which was used in this program, and exits.
+.TP
+.B \-x
+do not attempt to clear the terminal's scrollback buffer
+using the extended \*(``E3\*('' capability.
.SS Commands
+A few commands (\fBinit\fP, \fBreset\fP and \fBlongname\fP) are
+special; they are defined by the \fB@TPUT@\fP program.
+The others are the names of \fIcapabilities\fP from the terminal database
+(see \fBterminfo\fR(5) for a list).
+Although \fBinit\fP and \fBreset\fP resemble capability names,
+\fB@TPUT@\fP uses several capabilities to perform these special functions.
.TP
\fIcapname\fR
-indicates the capability from the \fBterminfo\fR database. When
-\fBtermcap\fR support is compiled in, the \fBtermcap\fR name for
-the capability is also accepted.
+indicates the capability from the terminal database.
.IP
If the capability is a string that takes parameters, the arguments
following the capability will be used as parameters for the string.
.IP
Most parameters are numbers.
-Only a few terminfo capabilities require string parameters;
+Only a few terminal capabilities require string parameters;
\fB@TPUT@\fR uses a table to decide which to pass as strings.
Normally \fB@TPUT@\fR uses \fBtparm\fR(3X) to perform the substitution.
If no parameters are given for the capability,
\fB@TPUT@\fR writes the string without performing the substitution.
.TP
\fBinit\fR
-If the \fBterminfo\fR database is present and an entry for the user's
+If the terminal database is present and an entry for the user's
terminal exists (see \fB\-T\fR\fItype\fR, above), the following will
occur:
.RS
Otherwise, \fBreset\fR acts identically to \fBinit\fR.
.TP
\fBlongname\fR
-If the \fBterminfo\fR database is present and an entry for the
+If the terminal database is present and an entry for the
user's terminal exists (see \fB\-T\fR\fItype\fR above), then the long name
of the terminal will be put out. The long name is the last
name in the first line of the terminal's description in the
.PP
Both of these appeared in 4.4BSD,
becoming the \*(lqmodern\*(rq BSD implementation of \fBtput\fP.
+.PP
+This implementation of \fBtput\fP began from a different source than
+AT&T or BSD: Ross Ridge's \fImytinfo\fP package, published on
+\fIcomp.sources.unix\fP in December 1992.
+Ridge's program made more sophisticated use of the terminal capabilities
+than the BSD program.
+Eric Raymond used the \fBtput\fP program
+(and other parts of \fImytinfo\fP) in ncurses in June 1995.
+Using the portions dealing with terminal capabilities
+almost without change,
+Raymond made improvements to the way the command-line parameters
+were handled.
.SH PORTABILITY
.PP
This implementation of \fBtput\fP differs from AT&T \fBtput\fP in
the standard \fIcapname\fR operands, and an internal library
function to analyze nonstandard \fIcapname\fR operands.
.PP
+This implementation (unlike others) can accept both \fItermcap\fP
+and \fIterminfo\fP names for the \fIcapname\fP feature,
+if
+\fItermcap\fR support is compiled in.
+However, the predefined \fItermcap\fP and \fIterminfo\fP names have two
+ambiguities in this case (and the \fIterminfo\fP name is assumed):
+.bP
+The \fItermcap\fP name \fBdl\fP corresponds to
+the \fIterminfo\fP name \fBdl1\fP (delete one line).
+.br
+The \fIterminfo\fP name \fBdl\fP corresponds to
+the \fItermcap\fP name \fBDL\fP (delete a given number of lines).
+.bP
+The \fItermcap\fP name \fBed\fP corresponds to
+the \fIterminfo\fP name \fBrmdc\fP (end delete mode).
+.br
+The \fIterminfo\fP name \fBed\fP corresponds to
+the \fItermcap\fP name \fBcd\fP (clear to end of screen).
+.PP
The \fBlongname\fR and \fB\-S\fR options, and the parameter-substitution
features used in the \fBcup\fR example,
were not supported in BSD curses before 4.3reno (1989) or in
projects / ncurses.git / blobdiff