'\" t
.\"***************************************************************************
-.\" Copyright (c) 1998-2016,2017 Free Software Foundation, Inc. *
+.\" Copyright 2018-2020,2021 Thomas E. Dickey *
+.\" Copyright 1998-2017,2018 Free Software Foundation, Inc. *
.\" *
.\" Permission is hereby granted, free of charge, to any person obtaining a *
.\" copy of this software and associated documentation files (the *
.\" authorization. *
.\"***************************************************************************
.\"
-.\" $Id: infocmp.1m,v 1.67 2017/11/18 23:51:17 tom Exp $
+.\" $Id: infocmp.1m,v 1.79 2021/08/15 20:01:31 tom Exp $
.TH @INFOCMP@ 1M ""
.ie \n(.g .ds `` \(lq
.el .ds `` ``
.ie n .IP \(bu 4
.el .IP \(bu 2
..
+.de NS
+.ie n .sp
+.el .sp .5
+.ie n .in +4
+.el .in +2
+.nf
+.ft C \" Courier
+..
+.de NE
+.fi
+.ft R
+.ie n .in -4
+.el .in -2
+..
.ds d @TERMINFO@
.SH NAME
\fB@INFOCMP@\fR \- compare or print out \fIterminfo\fR descriptions
.IP
The \fB\-u\fR option provides a related output,
showing the first terminal description rewritten to use the second
-as a building block via the \*(``use=\*('' clause.
+as a building block via the \*(``use=\*('' clause.
.TP
\fB\-n\fR
produces a list of each capability that is in \fInone\fP of the given entries.
\fB@INFOCMP@\fR uses the environment variable \fBTERM\fR
for each of the \fItermnames\fR.
.SS Source Listing Options [\-I] [\-L] [\-C] [\-r]
-The \fB\-I\fR, \fB\-L\fR, and \fB\-C\fR options will produce a source listing for
-each terminal named.
+The \fB\-I\fR, \fB\-L\fR, and \fB\-C\fR options will produce
+a source listing for each terminal named.
.
.TS
center tab(/) ;
Because
\fBtermcap\fR strings are not as flexible, it is not always possible to convert
a \fBterminfo\fR string capability into an equivalent \fBtermcap\fR format.
-A subsequent conversion of the \fBtermcap\fR file back into \fBterminfo\fR format
-will not necessarily reproduce the original \fBterminfo\fR
-source.
+A subsequent conversion of the \fBtermcap\fR file
+back into \fBterminfo\fR format
+will not necessarily reproduce the original \fBterminfo\fR source.
.PP
Some common \fBterminfo\fR parameter sequences, their \fBtermcap\fR
equivalents, and some terminal types which commonly have such sequences, are:
entries into a terminal's description.
Or, if two similar terminals exist, but
were coded at different times or by different people so that each description
-is a full description, using \fB@INFOCMP@\fR will show what can be done to change
+is a full description, using \fB@INFOCMP@\fR
+will show what can be done to change
one description to be relative to the other.
.PP
-A capability will get printed with an at-sign (@) if it no longer exists in the
+A capability will be printed with an at-sign (@) if it no longer exists in the
first \fItermname\fR, but one of the other \fItermname\fR entries contains a
value for it.
-A capability's value gets printed if the value in the first
+A capability's value will be printed if the value in the first
\fItermname\fR is not found in any of the other \fItermname\fR entries, or if
the first of the other \fItermname\fR entries that has this capability gives a
different value for the capability than that in the first \fItermname\fR.
of 60 characters.
.TP
\fB\-a\fR
-tells \fB@INFOCMP@\fP to retain commented-out capabilities rather than discarding
-them.
+tells \fB@INFOCMP@\fP to retain commented-out capabilities
+rather than discarding them.
Capabilities are commented by prefixing them with a period.
.TP
\fB\-D\fR
-tells \fB@INFOCMP@\fP to print the database locations that it knows about, and exit.
+tells \fB@INFOCMP@\fP to print the database locations that it knows about,
+and exit.
.TP 5
\fB\-E\fR
Dump the capabilities of the given terminal as tables, needed in
3
hexadecimal and base64
.RE
+.IP
+For example, this prints the compiled terminfo value as a string
+which could be assigned to the \fBTERMINFO\fP environment variable:
+.NS
+@INFOCMP@ -0 -q -Q2
+.NE
.TP 5
\fB\-q\fR
This makes the output a little shorter:
.RS
.bP
Make the comparison listing shorter by omitting subheadings, and using
-\*(``\-\*('' for absent capabilities, \*(``@\*('' for canceled rather than \*(``NULL\*(''.
+\*(``\-\*('' for absent capabilities, \*(``@\*(''
+for canceled rather than \*(``NULL\*(''.
.bP
However, show differences between absent and cancelled capabilities.
.bP
\fB\-R\fR\fIsubset\fR
Restrict output to a given subset.
This option is for use with archaic
-versions of terminfo like those on SVr1, Ultrix, or HP/UX that do not support
+versions of terminfo like those on SVr1, Ultrix, or HP-UX that do not support
the full set of SVR4/XSI Curses terminfo; and variants such as AIX
that have their own extensions incompatible with SVr4/XSI.
.RS
.bP
Available terminfo
-subsets are \*(``SVr1\*('', \*(``Ultrix\*('', \*(``HP\*('', and \*(``AIX\*(''; see \fBterminfo\fR(\*n) for
-details.
+subsets are \*(``SVr1\*('', \*(``Ultrix\*('', \*(``HP\*('', and \*(``AIX\*('';
+see \fBterminfo\fR(\*n) for details.
.bP
You can also choose the subset \*(``BSD\*('' which selects only capabilities
with termcap equivalents recognized by 4.4BSD.
untranslatable capabilities are commented-out.
.TP 5
\fB\-U\fR
-tells \fB@INFOCMP@\fP to not post-process the data after parsing the source file.
+tells \fB@INFOCMP@\fP to not post-process the data
+after parsing the source file.
This feature helps when comparing the actual contents of two source files,
since it excludes the inferences that \fB@INFOCMP@\fP makes to fill in missing
data.
changes the output to \fIwidth\fR characters.
.TP
\fB\-x\fR
-print information for user-defined capabilities.
+print information for user-defined capabilities (see \fBuser_caps(\*n)\fP.
These are extensions to the terminfo repertoire which can be loaded
using the \fB\-x\fR option of \fB@TIC@\fP.
.SH FILES
.TP 20
\*d
Compiled terminal description database.
+.SH HISTORY
+Although System V Release 2 provided a terminfo library,
+it had no documented tool for decompiling the terminal descriptions.
+Tony Hansen (AT&T) wrote the first \fBinfocmp\fP in early 1984,
+for System V Release 3.
+.PP
+Eric Raymond used the AT&T documentation in 1995 to provide an equivalent
+\fB@INFOCMP@\fP for ncurses.
+In addition, he added a few new features such as:
+.bP
+the \fB\-e\fP option, to support \fIfallback\fP
+(compiled-in) terminal descriptions
+.bP
+the \fB\-i\fP option, to help with analysis
+.PP
+Later, Thomas Dickey added the \fB\-x\fP (user-defined capabilities)
+option, and the \fB\-E\fP option to support fallback entries with
+user-defined capabilities.
+.PP
+For a complete list, see the \fIEXTENSIONS\fP section.
+.PP
+In 2010, Roy Marples provided an \fBinfocmp\fP program for NetBSD.
+It is less capable than the SVr4 or ncurses versions
+(e.g., it lacks the sorting options documented in X/Open),
+but does include the \fB\-x\fP option adapted from ncurses.
+.SH PORTABILITY
+X/Open Curses, Issue 7 (2009) provides a description of \fBinfocmp\fP.
+It does not mention the options used for converting to termcap format.
.SH EXTENSIONS
The
\fB\-0\fR,
This implementation shows those as \*(``NULL\*('',
for consistency with missing strings.
.PP
-The \fB\-r\fR option's notion of \*(``termcap\*('' capabilities is System V Release 4's.
+The \fB\-r\fR option's notion of \*(``termcap\*('' capabilities
+is System V Release 4's.
Actual BSD curses versions will have a more restricted set.
To see only the
4.4BSD set, use \fB\-r\fR \fB\-RBSD\fR.
\fB@TOE@\fR(1M),
\fBcurses\fR(3X),
\fBterminfo\fR(\*n).
+\fBuser_caps\fR(\*n).
.sp
-http://invisible-island.net/ncurses/tctest.html
+https://invisible-island.net/ncurses/tctest.html
.PP
This describes \fBncurses\fR
version @NCURSES_MAJOR@.@NCURSES_MINOR@ (patch @NCURSES_PATCH@).
projects / ncurses.git / blobdiff