-------------------------------------------------------------------------------
-- Copyright 2020-2021,2023 Thomas E. Dickey                                 --
-- Copyright 1998-2012,2018 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             --
-- "Software"), to deal in the Software without restriction, including       --
-- without limitation the rights to use, copy, modify, merge, publish,       --
-- distribute, distribute with modifications, sublicense, and/or sell copies --
-- of the Software, and to permit persons to whom the Software is furnished  --
-- to do so, subject to the following conditions:                            --
--                                                                           --
-- The above copyright notice and this permission notice shall be included   --
-- in all copies or substantial portions of the Software.                    --
--                                                                           --
-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS   --
-- OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF                --
-- MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN --
-- NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,       --
-- DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR     --
-- OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE --
-- USE OR OTHER DEALINGS IN THE SOFTWARE.                                    --
--                                                                           --
-- Except as contained in this notice, the name(s) of the above copyright    --
-- holders shall not be used in advertising or otherwise to promote the      --
-- sale, use or other dealings in this Software without prior written        --
-- authorization.                                                            --
-------------------------------------------------------------------------------
-- $Id: README,v 1.31 2023/10/28 14:49:04 tom Exp $
-------------------------------------------------------------------------------
		README file for the ncurses package

See the file ANNOUNCE for a summary of ncurses features and ports.
See the file INSTALL for instructions on how to build and install ncurses.
See the file NEWS for a release history and bug-fix notes.
See the file TO-DO for things that still need doing, including known bugs.

Browse the file doc/html/ncurses-intro.html for narrative descriptions of how
to use ncurses and the panel, menu, and form libraries.

Browse the file doc/html/hackguide.html for a tour of the package internals.

Find plain text versions of both of these documents in doc/.

ROADMAP AND PACKAGE OVERVIEW:

You should be reading this file in a directory called:  ncurses-d.d, where d.d
is the current version number (see the dist.mk file in this directory for
that).  There should be a number of subdirectories, including `c++', `form',
`man', `menu', `misc', `ncurses', `panel', `progs', `test', and `Ada95'.

A full build/install of this package typically installs several libraries, a
handful of utilities, and a database hierarchy.  Here is an inventory of the
pieces:

The libraries are:

	libncurses.a       (normal)
	libncurses.so      (shared)
	libncurses_g.a     (debug and trace code enabled)
	libncurses_p.a     (profiling enabled)

	libpanel.a         (normal)
	libpanel.so        (shared)
	libpanel_g.a       (debug and trace code enabled)

	libmenu.a          (normal)
	libmenu.so         (shared)
	libmenu_g.a        (debug enabled)

	libform.a          (normal)
	libform.so         (shared)
	libform_g.a        (debug enabled)

If you configure using the --enable-widec option, a "w" is appended to the
library names (e.g., libncursesw.a), and the resulting libraries support
wide-characters, e.g., via a UTF-8 locale.  The corresponding header files
are compatible with the non-wide-character configuration; wide-character
features are provided by ifdef's in the header files.  The wide-character
library interfaces are not binary-compatible with the non-wide-character
version.

If you configure using the --enable-reentrant option, a "t" is appended to the
library names (e.g., libncursest.a) and the resulting libraries have a
different binary interface, making the ncurses interface more opaque.

The ncurses libraries implement the curses API.  The panel, menu and forms
libraries implement clones of the SVr4 panel, menu and forms APIs.  The source
code for these lives in the `ncurses', `panel', `menu', and `form' directories
respectively.

In the `c++' directory, you'll find code that defines an interface to the
curses, forms, menus and panels library packaged as C++ classes, and a demo
program in C++ to test it.  These class definition modules are not installed
by the 'make install.libs' rule as libncurses++.

In the `Ada95' directory, you'll find code and documentation for an
Ada95 binding of the curses API, to be used with the GNAT compiler.
This binding is built by a normal top-level `make' if configure detects
an usable version of GNAT (3.11 or above). It is not installed automatically.
See the Ada95 directory for more build and installation instructions and
for documentation of the binding.

To do its job, the ncurses code needs your terminal type to be set in the
environment variable TERM (normally set by your OS; under UNIX, getty(1)
typically does this, but you can override it in your .profile); and, it needs
a database of terminal descriptions in which to look up your terminal type's
capabilities.

In older (V7/BSD) versions of curses, the database was a flat text file,
/etc/termcap; in newer (USG/USL) versions, the database is a hierarchy of
fast-loading binary description blocks under /usr/lib/terminfo.  These binary
blocks are compiled from an improved editable text representation called
`terminfo' format (documented in man/terminfo.5).  The ncurses library can use
either /etc/termcap or the compiled binary terminfo blocks, but prefers the
second form.

In the `misc' directory, there is a text file terminfo.src, in editable
terminfo format, which can be used to generate the terminfo binaries (that's
what make install.data does).  If the package was built with the
--enable-termcap option enabled, and the ncurses library cannot find a
terminfo description for your terminal, it will fall back to the termcap file
supplied with your system (which the ncurses package installation leaves
strictly alone).

The utilities are as follows:

	tic             -- terminfo source to binary compiler
	infocmp         -- terminfo binary to source decompiler/comparator
	clear           -- emits clear-screen for current terminal
	tabs            -- set tabs on a terminal
	tput            -- shell-script access to terminal capabilities.
	toe             -- table of entries utility
	tset            -- terminal-initialization utility

The first two (tic and infocmp) are used for manipulating terminfo
descriptions; the next two (clear and tput) are for use in shell scripts.  The
last (tset) is provided for 4.4BSD compatibility.  The source code for all of
these lives in the `progs' directory.

Detailed documentation for all libraries and utilities can be found in the
`man' and `doc' directories.  An HTML introduction to ncurses, panels, and
menus programming lives in the `doc/html' directory.  Manpages in HTML format
are under `doc/html/man'.

The `test' directory contains programs that can be used to verify or
demonstrate the functions of the ncurses libraries.  See test/README for
descriptions of these programs.  Notably, the `ncurses' utility is designed to
help you systematically exercise the library functions.

AUTHORS:

Pavel Curtis:
	wrote the original ncurses

Zeyd M. Ben-Halim:
	port of original to Linux and many enhancements.

Thomas Dickey (maintainer for 1.9.9g through 4.1, resuming with FSF's 5.0):
	configuration scripts, porting, mods to adhere to XSI Curses in the
	areas of background color, terminal modes.  Also memory leak testing,
	the wresize, default colors and key definition extensions and numerous
	bug fixes -- more than half of those enumerated in NEWS beginning with
	the internal release 1.8.9, see

		https://invisible-island.net/personal/changelogs.html

Florian La Roche (official maintainer for FSF's ncurses 4.2)
	Beginning with release 4.2, ncurses is distributed under an MIT-style
	license.

Eric S. Raymond:
	the man pages, infocmp(1), tput(1), clear(1), captoinfo(1), tset(1),
	toe(1), most of tic(1), trace levels, the HTML intro, wgetnstr() and
	many other entry points, the cursor-movement optimization, the
	scroll-pack optimizer for vertical motions, the mouse interface and
	xterm mouse support, and the ncurses test program.

Juergen Pfeifer
	The menu and form libraries, C++ bindings for ncurses, menus, forms
	and panels, as well as the Ada95 binding.  Ongoing support for panel.

CONTRIBUTORS:

Alexander V. Lukyanov
	for numerous fixes and improvements to the optimization logic.

David MacKenzie
	for first-class bug-chasing and methodical testing.

Ross Ridge
	for the code that hacks termcap parameterized strings into terminfo.

Warren Tucker and Gerhard Fuernkranz,
	for writing and sending the panel library.

Hellmuth Michaelis,
	for many patches and testing the optimization code.

Eric Newton, Ulrich Drepper, and Anatoly Ivasyuk:
	the C++ code.

Jonathan Ross,
	for lessons in using sed.

Keith Bostic (maintainer of 4.4BSD curses)
	for help, criticism, comments, bug-finding, and being willing to
	deep-six BSD curses for this one when it grew up.

Richard Stallman,
	for his commitment to making ncurses free software.

Countless other people have contributed by reporting bugs, sending fixes,
suggesting improvements, and generally whining about ncurses :-)

BUGS:
	See the INSTALL file for bug and developer-list addresses.
	The Hacker's Guide in the doc directory includes some guidelines
	on how to report bugs in ways that will get them fixed most quickly.

-- vile:txtmode fc=78

-------------------------------------------------------------------------------
-- Copyright 2020 Thomas E. Dickey                                           --
-- Copyright 2008-2011,2012 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             --
-- "Software"), to deal in the Software without restriction, including       --
-- without limitation the rights to use, copy, modify, merge, publish,       --
-- distribute, distribute with modifications, sublicense, and/or sell copies --
-- of the Software, and to permit persons to whom the Software is furnished  --
-- to do so, subject to the following conditions:                            --
--                                                                           --
-- The above copyright notice and this permission notice shall be included   --
-- in all copies or substantial portions of the Software.                    --
--                                                                           --
-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS   --
-- OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF                --
-- MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN --
-- NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,       --
-- DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR     --
-- OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE --
-- USE OR OTHER DEALINGS IN THE SOFTWARE.                                    --
--                                                                           --
-- Except as contained in this notice, the name(s) of the above copyright    --
-- holders shall not be used in advertising or otherwise to promote the      --
-- sale, use or other dealings in this Software without prior written        --
-- authorization.                                                            --
-------------------------------------------------------------------------------
-- $Id: README.MinGW,v 1.14 2020/09/06 22:22:44 tom Exp $
-- Author: Juergen Pfeifer
-------------------------------------------------------------------------------

This is work in progress, but it is in an state where one can see it
works at least on the Windows Console.

You should install the MSYS2 package, so that you have a shell environment that
allows you to run scripts, especially configure, etc.  You can get that
from
	https://www.msys2.org/

or the individual packages from

	https://sourceforge.net/projects/msys2/files/

You may also use a hosted MinGW cross-compile toolchain, e.g., on Ubuntu or
ArchLinux to build the libraries and tools.

To build ncurses for native Windows with support for the new Windows 10 Virtual
Terminal and PseudoConsole support, you should install at least version 8.0 of
the mingw-w64-x86_64-headers package as it appears to have support for the
required Windows SDK level.  Please note that some of the Linux distributions
are a bit behind with respect to the required MinGW header versions and you may
not be able to properly build the libraries for current Windows 10 using these
toolchains.  Although it is a bit slow, MSYS2 on Windows 10 64-Bit is the
authoritative build environment for the MinGW version of ncurses.

Using MinGW is a pragmatic decision, it is the easiest way to port this
heavily UNIX based sourcebase to native Windows. The goal is of course
to provide the includes, libraries and DLLs to be used with the more
common traditional development environments on Windows, mainly with
Microsoft Visual Studio.

The TERM environment variable must be set especially to activate the Windows
console-driver.  The driver checks if TERM is set to "#win32con" (explicit
use) or if TERM is unset or empty (implicit).

Beginning with build 17763 (Fall 2018 update), Windows 10 supports ANSI escape
sequences (Virtual Terminal support). If ncurses detects this or a later
Windows 10 version, the interpretation of the implicit TERM setting (which
means: TERM is not set or empty) changes. In this case, TERM is to be assumed
to be "ms-terminal" and ncurses acts using the regular terminfo based driver,
thus acting like a regular Terminal we all know from UNIX like environments.

This code requires WindowsNT 6.0 or better, which means on the client
Windows Vista or better, on the server Windows Server 2008 or better.

If running on Windows 10 Build 17763 or later is detected, any program
spawning a subprocess running a ncurses program should use the new
PseudoConsole support, which provides what we know as pty from the UNIX
world also for Windows. Using the CreatePseudoConsole API
(see https://docs.microsoft.com/en-us/windows/console/createpseudoconsole)
in the calling process, it is guaranteed that the called ncurses program has
a console that is required by its implementation, even if the calling program
is NOT a console program, e.g., MSYS2's own mintty Terminal emulator.

In the current MSYS2/minGW setup, building MinGW shared libraries with
libtool for ncurses seems to be broken, so I recommend NOT to use libtool.

To build a modern but still small footprint ncurses that provides
hooks for interop, I recommend using these options:

	--without-libtool
	--disable-home-terminfo
	--enable-database
	--disable-termcap
	--enable-sp-funcs
	--enable-term-driver
	--enable-interop

This is the configuration command line which I am using at the moment
(assuming environment variable MINGW_ROOT holds the root directory name of
your MinGW build):

./configure \
	--prefix=/mingw64 \
	--without-cxx \
	--without-ada \
	--enable-warnings \
	--enable-assertions \
	--enable-exp-win32 \
	--enable-ext-funcs \
	--disable-home-terminfo \
	--disable-echo \
	--disable-getcap \
	--disable-hard-tabs \
	--disable-leaks \
	--disable-macros \
	--disable-overwrite \
	--enable-opaque-curses \
	--enable-opaque-panel \
	--enable-opaque-menu \
	--enable-opaque-form \
	--enable-database \
	--enable-sp-funcs \
	--enable-term-driver \
	--enable-interop \
	--disable-termcap \
	--enable-database \
	--with-progs \
	--without-libtool \
	--enable-pc-files \
	--with-shared \
	--with-normal \
	--without-debug \
	--with-fallbacks=ms-terminal \
	--without-manpages

Please note that it is also necessary to set this environment variable:

export PATH_SEPARATOR=";"

in order to parse the terminfo paths correctly. Terminfo paths should
always be separated by a semicolon, even when running under MSYS2.

All the options above are - like the whole Windows support -
experimental.

-- vile:txtmode

-------------------------------------------------------------------------------
-- Copyright 2020,2021 Thomas E. Dickey                                      --
-- Copyright 1998-2006,2018 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             --
-- "Software"), to deal in the Software without restriction, including       --
-- without limitation the rights to use, copy, modify, merge, publish,       --
-- distribute, distribute with modifications, sublicense, and/or sell copies --
-- of the Software, and to permit persons to whom the Software is furnished  --
-- to do so, subject to the following conditions:                            --
--                                                                           --
-- The above copyright notice and this permission notice shall be included   --
-- in all copies or substantial portions of the Software.                    --
--                                                                           --
-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS   --
-- OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF                --
-- MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN --
-- NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,       --
-- DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR     --
-- OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE --
-- USE OR OTHER DEALINGS IN THE SOFTWARE.                                    --
--                                                                           --
-- Except as contained in this notice, the name(s) of the above copyright    --
-- holders shall not be used in advertising or otherwise to promote the      --
-- sale, use or other dealings in this Software without prior written        --
-- authorization.                                                            --
-------------------------------------------------------------------------------
-- $Id: README.emx,v 1.12 2021/06/17 21:20:30 tom Exp $
-- Author: Thomas Dickey
-------------------------------------------------------------------------------

You can build ncurses on OS/2 in the EMX environment.  But you must build and
acquire tools.  Not all of the tools distributed with EMX work properly, and
some additional ones are required.

First, the configure script distributed with ncurses will not run as-is in EMX.
You can generate a new one if you have autoconf built for EMX.  You will need
the EMX development tools, of course.  Get these programs to start:

	GNU m4 program (version 1.4)
	GNU autoconf (version 2.13).
	GNU patch (version 2.5)

Apply the autoconf patches from

	https://invisible-island.net/autoconf
	ftp://ftp.invisible-island.net/autoconf

These are ordered by date:

	autoconf-2.13-20030927.patch.gz
	autoconf-2.13-20030927-emx.patch.gz

I built my development environment for ncurses using EMX 0.9c at the end of
1997.  Much of the EMX patch for autoconf was done originally by J.J.G.Ripoll,
using a similar environment (he prefers using the 'ash' shell).  Newer versions
may fix these problems:

	+ The pdksh program distributed at Hobbes and Leo (with a 1996 date) is
	  defective.  It does not process "here documents" correctly (which
	  renders it useless for running the autoconf script).  I built my own
	  copy of pdksh 5.2.13, which does have the bug corrected (documented
	  in the change log for pdksh).

	+ I also built from sources (because the distributed binaries did not
	  work) the cmp, diff programs.

	  Other required utilities such as ar, cat, chmod, cp, gawk, grep, mv,
	  ls, rm, mkdir, sed, sort and tr worked.

Once you have autoconf patched and installed, run 'autoconf' from the top-level
directory of ncurses to generate the EMX-specific configure script.