ncurses 6.2 - patch 20201219

[ncurses.git] / man / infocmp.1m

diff --git a/man/infocmp.1m b/man/infocmp.1m
index 19852e8f691d75f1fa547609de6de605f9bb91d4..41a50a0c33fc0ac191985fb1358509416bf62e9a 100644 (file)
--- a/man/infocmp.1m
+++ b/man/infocmp.1m
@@ -1,6 +1,7 @@
 '\" t
 .\"***************************************************************************
-.\" Copyright (c) 1998-2017,2018 Free Software Foundation, Inc.              *
+.\" Copyright 2018-2019,2020 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            *
@@ -27,7 +28,7 @@
 .\" authorization.                                                           *
 .\"***************************************************************************
 .\"
-.\" $Id: infocmp.1m,v 1.71 2018/05/19 21:07:17 tom Exp $
+.\" $Id: infocmp.1m,v 1.77 2020/07/25 20:37:39 tom Exp $
 .TH @INFOCMP@ 1M ""
 .ie \n(.g .ds `` \(lq
 .el       .ds `` ``
@@ -49,7 +50,8 @@
 .de NE
 .fi
 .ft R
-.in -4
+.ie n  .in -4
+.el    .in -2
 ..
 .ds d @TERMINFO@
 .SH NAME
@@ -134,7 +136,7 @@ followed by the capability value.
 .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.
@@ -148,8 +150,8 @@ If no \fItermnames\fR are given,
 \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(/) ;
@@ -243,10 +245,10 @@ 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.
@@ -552,13 +554,41 @@ Use the \fB\-W\fP option to do this.
 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,
@@ -601,6 +631,7 @@ The \fB\-F\fR option of \fB@INFOCMP@\fR(1M) should be a \fB@TOE@\fR(1M) mode.
 \fB@TOE@\fR(1M),
 \fBcurses\fR(3X),
 \fBterminfo\fR(\*n).
+\fBuser_caps\fR(\*n).
 .sp
 https://invisible-island.net/ncurses/tctest.html
 .PP