Always autogen fileio.h.

Bump CURSES_LIB_MAJOR.CURSES_LIB_MINOR to 9.0 belatedly.

Fix SSP build

curses: Add stubs for mouse functions

No mouse support actually included.
But that doesn't matter because most terms don't actually support a mouse.

We should look into hooking these into wsmouse(4) and xterm mouse
in the future.

Compatable with nCurses mouse API version 2.

curses: believe in unicorns

Hopefully this ends the bikeshed.
If you don't believe in unicorns, please #if 0 it out to preserve
the humour.

curses: Add __NetBSD_Curses_Version__

Similar to __NetBSD_Version__ from sys/param.h but has no
correlation to it or the ELF symver libcurses is built as.

If we say that v1 was everything prior to this, it makes sense to
start this from v2.

curses(3): add curses_version()

Returns NetBSD-Curses %s
Where %s is the NetBSD version taken from sys/param.h

Discussed on tech-net@, only for ncurses compat.

We need insstr.c for !HAVE_WCHAR too.

Provide basic documentation on getcchar(3) and setcchar(3).

Looks like we don't have any of wide curses stuff documented, so this
seems to be a good place to start. Needs more exposition on wide
attr_t and how it's related to non-wide chtype, etc, etc.

Oops, revert previous. Wrong tree.

Comment out LIBDPLIBS so that this can be built outside of the tree.

Rename curses_insertch.3 to curses_insch.3 to match the function names
documented in that manpage. With the letter salad used in curses
function names naming consistency is very important and this page was
the only one that didn't match.

Add mvinsch and mvwinsch links. Update xrefs in other man pages.

branches: 1.85.2;
use SUBDIR.roff suggested by uwe@

branches: 1.84.10;
Implement POSIX Curses Soft Label Key functions.

branches: 1.83.2;
Move the ripoffline logic out of screen.c and into ripoffline.c.
Store ripped off lines in the SCREEN structure so we can repaint then
when the terminal is resized.
Fix mvwin(3) so it can move windows in the ripped off area.

Implement POSIX curses function ripoffline(3).

Implement ncurses is_pad(3).
Correct documentation about is_keypad(3).

Implement is_term_resized and resize_term(3) ncurses extensions.
resizeterm(3) is now a wrapper for resize_term(3).

Add the set_escdelay(3) and set_tabsize(3) ncurses extensions.

Add missing man pages for wsyncup.3 and wcursyncup.3

Implement POSIX Curses functions immedok(3) and syncok(3).

Implement ncurses extension has_key.

Implement POSIX Curses typeahead function.

Implement POSIX curses use_env function.

Implement ncurses extensions is_leaveok and is_keypad.

The former allows the ncurses (and pdcurses) macros getsyx and setsyx
to be implemented, which is needed by a surprising number of applications.

The latter is needed for Python curses support so it doesn't have to dive
into ncurses window structure.

Add the POSIX filter() function to libcurses.

branches: 1.71.6;
Remove stray .if make(insatll).

I would really like to know why this didn't fail the clean build I ran
last night.

remove the build support for GCC 4.1, and any hacks i found for it.

there could still be more -- i only looked for lines matching
both "HAVE_GCC" and "4" as words (grep -w.)

Add workaround for lib/48827 for vax to avoid segv in sysinst for now

branches: 1.68.2; 1.68.8;
Fix build

Add capfile(5) to describe the termcap format.
Adjust various man pages and other documentation to point to capfile(5)
instead of termcap(5).
Remove getcap(3) as curses hasn't been building it for a long time.
Punt wrterm.c as tset no longer uses it.

branches: 1.66.2;
Move longname(3) from curses to terminfo, pre-cursor to fix PR/43386.

Add man page link for define_key

Userland now builds and uses terminfo instead of termcap.

OK: core@, jdc@

Add support for the chgat(3) family. It is a useful extension from
ncurses, supporting it dramatically reduces the need for ncurses in
pkgsrc.

make fileio.h work with objdir.

branches: 1.61.4;
s/AWK/TOOL_AWK/. Problem reported by Greg Oster.

Use WARNS=2, which just works.

branches: 1.59.2;
Use WARNS=1 rather than adding warning options to COPTS.
Tested on several MACHINE_ARCHs.

Enable gcc optimization on m68000 (sun2) again with minimum hacks.
gcc -O0 generates a bit fat binaries.

branches: 1.57.2;
Add getwin and putwin mlinks.

Add new file IO functions.
Define DISABLE_WCHAR, so that we can build without HAVE_WCHAR.

only use -Wuninitialized with -O>0.

branches: 1.54.4;
Change debug handling, now we write debug out iff CURSES_TRACE_FILE
has been set in the environment, this prevents people using MKDEBUGLIB
getting more than they bargained for.

Tidied up the debug settings in the Makefile to reflect the above change,
we no longer need to have FULL_DEBUG since nothing is written by default.

Merge in wide curses code done as a Summer of Code project by
Ruibiao Qiu.

branches: 1.52.12;
Add missing mvin* and mvwin* manual pages.

branches: 1.51.4;
Changes to support *echochar().
Should fix PR lib/24927.

Add (missing) mvgetch() and mvwgetch() manual pages.

s/can_change_colors/can_change_color/

Link curses_cursor(3) to getmaxyx(3); from Steve Rumble in PR 23183.

Add noqiflush() and qiflush()
Fixes PR lib/20037.

Add keyname().
Fixes PR lib/20033.
Allow SMALL to be defined, to reduce the size of the library.

Add addchstr() family of functions.
Based on mail from Douwe Kiela.
Fixes PR lib/21285 by Thomas Klausner.

Add missing *printw manual page links.
Patch provided in PR lib/21446 by Douwe Kiela.

Add missing manual page links.

Add mvwin manual pages.
From PR 21041.

Add attr_set() group of functions.
Fixes PR lib/20034 by Thomas Klausner.

Added halfdelay() function.

Add curses pad manual pages.
Forgot to commit this. Pointed out by wiz.

Added separate man pages for curses functions to provide better
documentation of the curses functions.

Use ${NETBSDSRCDIR}/some/path instead of ${.CURDIR}/../../some/path (etc).
(Reduces make output by ~ 20%)

* Added new function idcok - this closes PR 10802
* Added sentinels to the line structures when in debug mode to try
to pick up data overwrite problems, if they occur.

* Remove termcap globals from public interface
* Clean up commented out code

* Major change to add support for the newterm/set_term functions.
* Added fix to getch.c suggested by Gabriel Rosenkoetter (thanks :-)

Add code to allow resizing of windows and the underlying terminal.

Fixed casting bug in array indexing, a signed char was being sign
extended when cast to unsigned, made the cast "unsigned char"

Add the instr and inchstr families of functions.

build a trace version of libcurses, with "make -DDEBUG_CURSES"
(commented out as it is very uncommon)

* Added libterm to the include path - tgoto requires it for the private
structure definition.

branches: 1.28.2;
Add pause.c.

* Added rcs id line to files missing it.
* Added code to __restartwin to restore meta and cursor visibility states
* Added code to __stopwin to disable meta.
* Added the *line group of functions for drawing character lines.

* Fixed need for duplicate namp string in setterm.c
* Added meta function (turns meta bit on and off on terminal if supported)
* Added curs_set to control cursor visibility if supported.

* Move <wchar.h> from libcurses to include (for the missing functionality
is to be provided by libc).
* Define wint_t and size_t in <wchar.h> as well.

More multiple changes:
* Added function derwin.
* Added function copywin.
* Modified both overlay and overwrite to use copywin.
* Updated man page with new functions and fixed minor format glitch.

Add color.c, background.c, getyx.c.

Made data structures opaque

branches: 1.21.6;
Get rid of the evil trailing spaces and tabs.

Upgrades the standard NetBSD curses library to provide some
of the SYSV curses facilities. The added features are the collapsing
of arrow and function keysequences (as defined by termcap for the
terminal) into symbolic code returns thus relieving the application of
recognising multi-character key sequences. Other features are the
capability to perform a timed wait for a key (good for when you are
not sure if there is a keypress ready or not) and the capability for
turning off the inter-key timeout when assembling multi-character
function keys.

this work was done by Julian Coleman <J.D.Coleman@newcastle.ac.uk>
and blymn@baea.com.au (Brett Lymn). i'm just integrating it. thanks
HEAPS guys!

Ncurses (like SysV/XOpen based curses implementations) includes
the termcap API. This changes bsd-curses to do the same, so we
can update program Makefiles and the like *before* ncurses 4.2
is integrated.

use CPPFLAGS instead of CFLAGS

branches: 1.17.2;
Use bsd.subdir.mk as appropriate.

- define WARNS?=1 in the top-level Makefile.inc, and don't define
anywhere else.
- for now, override WARNS=0 in librpcsvc and libwrap, until they're
cleaned up
- rcsid police

lib is now clean (except for librpcsvc and libwrap) on the i386, and
this should motivate the other ports to fix any other minor problems
that their compilers pick up that the i386 version doesn't.

RCSid police, set WARNS?=1

Moved unctrl.h from games/mille.
Install it, as it's part of the curses interface.

Makefile cleanups:
use INCS variable to install includes and FILES to install objects.

Use ${INSTALL}.

Use 'includes' instead of 'beforeinstall' target to install curses.h header

specify man pages the new way.

branches: 1.9.2;
clean up import

deal with new share/doc strategy

update for new doc-make/install strategy

changes from branch

repeat after me: "I hate rcs ids"

branches: 1.4.2;
update to new version from berkeley. doesn't compile yet, nor
does it have rcsid's. this is for diffs.

New version from uunet.

Add RCS identifiers.

branches: 1.1.1;
Initial revision

branches: 1.1.2;
file Version.map was initially added on branch agc-symver.

Expand __CTRACE() to __nothing #ifndef DEBUG.

Remove most of #ifdef DEBUG around __CTRACE() calls.

No binary changes, except for line numbers for assert().

KNF.
Normalise coding style.
White space police.
Sprinkle some extra braces to make the flow more clear.

No functional changes.

branches: 1.20.14;
Add capfile(5) to describe the termcap format.
Adjust various man pages and other documentation to point to capfile(5)
instead of termcap(5).
Remove getcap(3) as curses hasn't been building it for a long time.
Punt wrterm.c as tset no longer uses it.

branches: 1.19.6;
fix wrong widechar assignment for "up arrow"

misc fixes and improvements:
-call setlocale(LC_CTYPE, "") before nl_langinfo(CODESET) if the
locale settings is (still) at "C" - otherwise the CODESET doesn't work
-fix the type of the WACS_* symbols -- this needs to be cchar_t*
-add safeguards where the return value of wcwidth() is used for
loop counters or indexing -- it can be -1
-use more common code in the widechar support case -- in particular
let the wchar functions do the work even if chtype ones were called
-implement wcursyncup/wsyncup/wsyncdown
-somewhat experimental: allow ACS_* variables to refer to WACS_*
table entries -- this way, programs using the old chtype using API
can use UTF8 line drawing on terminals which support UTF8 but not
ACS switching
-fix some logics bugs in UTF8 recognition and ALTCHARSET handling

Userland now builds and uses terminfo instead of termcap.

OK: core@, jdc@

use nl_langinfo(CODESET) instead of setlocale(LC_ALL, "").

branches: 1.15.2;
Remove clause 3 and 4 from TNF licenses

branches: 1.14.10;
Add additional line drawing and characters.
Pointed out by pooka@.

Merge in wide curses code done as a Summer of Code project by
Ruibiao Qiu.

Add debug "areas" that allow selective debugging by setting the
"CURSES_TRACE_MASK" environment variable. Postive vales include
debug areas, negative values exclude them.

branches: 1.11.20;
Make sure _acs_char[] is copied to screen->acs_char[] even when there is no
ac attribute. This fixes box-drawing on displays with no ac.

Only reference termcap capabilities in the screen struct in __init_acs
Also changed tputs to t_puts to output acs init string to correct device.

* Major change to add support for the newterm/set_term functions.
* Added fix to getch.c suggested by Gabriel Rosenkoetter (thanks :-)

Rename variables refering to termcap capabilities from NN to __tc_nn. Case
adjusted to match termcap capability. A few other variable names renamed too
(ones related to or derived from termcap variables).

* Added rcs id line to files missing it.
* Added code to __restartwin to restore meta and cursor visibility states
* Added code to __stopwin to disable meta.
* Added the *line group of functions for drawing character lines.

Added functions to replace what were previously macros in curses.h
(this is a requirement of SUSv2) - the old macro behaviour can be
restored by defining _CURSES_USE_MACROS.
Changed function prototypes to use ANSI style.
All externally visible functions now have ANSI style declarations.

Make ACS array index unsigned.

Use "unsigned char" instead of "int" in previous, from Christos Zoulas.

Cast array subscript to int - fixes compile barf on (at least) alpha.

Made data structures opaque

branches: 1.1.2;
file acs.c was initially added on branch curses-v3.

Sprinkle about some cycle wasting checks for the win pointer being
null. Unfortunately, ncurses does this and there is some sloppy code
out there that relies on the check resulting in segfaults in
NetBSD curses which then, of course, gets blamed for the error.

branches: 1.9.12;
Rework previous fix for getch cursor position when cursor is moved
without refresh. If the window is not dirty but the window cursor
position does not match curscr then move the cursor. This fixes
the issues seen in PR lib/54263.

Back out incorrect fix for PR 53617 and fix it in a different way.
Keep track of the cursor location, if getch is called without a refresh
and without pending updates (dirty windows) then move the cursor to the
correct location directly. Doing this prevents unnecessary refreshes.

Add/improve debug output for some routines.

Drop HAVE_WCHAR ifdefs from code that is not even compiled with !HAVE_WCHAR.

We still try to mainain the ability to build our curses with
!HAVE_WCHAR, but it doesn't make sense to provide stubs for new wide
API functions that just error out when !HAVE_WCHAR. Any code that
only uses old API (and can work with !HAVE_WCHAR curses) doesn't use
those new functions. The code that uses new API obviosly cannot work
when all the new API is stubbed out.

So the plan is to drop the stubs. This commit does that for files
that are not even compiled with !HAVE_WCHAR (not only those stubs are
useless, they were not even there to begin with).

Same object code is generated for the normal HAVE_WCHAR case. Nothing
is even recompiled for !HAVE_WCHAR.

Ok by blymn@ jdc@ roy@

branches: 1.5.14; 1.5.16;
Add missing new line in debug print.

Rename the old __waddbytes function to _cursesi_waddbytes and add a
parameter that controls whether or not certain characters in the
string are interpreted or not (things like tab being expanded).

Make __waddbytes a wrapper for _cursesi_waddbytes that passes all
parameters and sets the flag for character interpretation for backward
compatibility.

Fix an incipient bug in _cursesi_waddbytes where garbage would have
been written to the terminal if the terminal TABSIZE was set > 8 and
character interpretation is on.

Convert all internal __waddbytes calls to use _cursesi_waddbytes, fix
the function prototypes and add a new flag that will be used later.

Fix the addchstr family functions so that they call _cursesi_waddbytes
with character interpretation off as per SUSV2.

branches: 1.3.6; 1.3.12;
Prepare curses for the possibility of changing from termcap to terminfo.
term.h #defines lines, pad_char and no_color_video macros which conflict
with existing curses code. We change lines to alines and nlines depending
on use, pad_char to padchar and no_color_video becomes no_color_attributes
but with a strong alias from no_color_video.

Merge in wide curses code done as a Summer of Code project by
Ruibiao Qiu.

branches: 1.1.2;
Wide curses merge

Sprinkle about some cycle wasting checks for the win pointer being
null. Unfortunately, ncurses does this and there is some sloppy code
out there that relies on the check resulting in segfaults in
NetBSD curses which then, of course, gets blamed for the error.

branches: 1.14.4;
Fixes for lib/56926 amongst other things:
- plod now correctly accounts for wide characters when plodding
- use erase line when in color mode if the terminal has the capability
- ensure that the CA_CONTINUATION flag is applied consistently to the
subsequent characters in a wide character.
- fix a bunch of refresh bugs that caused inconsistent placement of
wide characters.

* Don't redraw the background if the new background character is the
same as the old one. This prevents excessive redraws in some
applications.

* Fix bug introduced when wbkgrndset was fixed, we cannot blindly
replace any instance of the old background character with the new one
because some of those characters were put there by the application
leading to display corruption. So flag characters as background when
they are erased and only update the flagged characters when setting
the background.

Make the default colour pair be pair 0 which appears to match other
curses implementations.

Correct (hopefully) the handling of wide characters.

* Remove the WCOL family of macros, these were "stealing" the upper bits
of a character attribute to store the column width of a character. No
warning was given about this in curses.h which meant it was easy to
accidentally reuse the bits in use by the WCOL macros (we already did).
Add couple of 16bit ints to the character structure iff HAVE_WCHAR is
true to hold the display width and wide char related flags (just
continuation at the moment)
* Convert all instances of WCOL macros to just reference the column width
in the char structure so it is not obfuscated.
* Fix cursor positioning so placing a cursor in the middle of a wide char
actually does just that.
* Fix plod so it understands that if the cursor is going to be positioned
in the middle of a wide char it cannot just reprint the char to get there.
* Fix plodput so it correctly counts the number of output characters for
wide characters.
* Fix slk routines to properly size the wctomb() buffer.

Style fixes most for __CTRACE().

Expand __CTRACE() to __nothing #ifndef DEBUG.

Remove most of #ifdef DEBUG around __CTRACE() calls.

No binary changes, except for line numbers for assert().

Rework previous fix for getch cursor position when cursor is moved
without refresh. If the window is not dirty but the window cursor
position does not match curscr then move the cursor. This fixes
the issues seen in PR lib/54263.

Back out incorrect fix for PR 53617 and fix it in a different way.
Keep track of the cursor location, if getch is called without a refresh
and without pending updates (dirty windows) then move the cursor to the
correct location directly. Doing this prevents unnecessary refreshes.

Drop HAVE_WCHAR ifdefs from code that is not even compiled with !HAVE_WCHAR.

We still try to mainain the ability to build our curses with
!HAVE_WCHAR, but it doesn't make sense to provide stubs for new wide
API functions that just error out when !HAVE_WCHAR. Any code that
only uses old API (and can work with !HAVE_WCHAR curses) doesn't use
those new functions. The code that uses new API obviosly cannot work
when all the new API is stubbed out.

So the plan is to drop the stubs. This commit does that for files
that are not even compiled with !HAVE_WCHAR (not only those stubs are
useless, they were not even there to begin with).

Same object code is generated for the normal HAVE_WCHAR case. Nothing
is even recompiled for !HAVE_WCHAR.

Ok by blymn@ jdc@ roy@

branches: 1.5.12; 1.5.14;
remove bogus malloc casts

branches: 1.4.28;
misc fixes and improvements:
-call setlocale(LC_CTYPE, "") before nl_langinfo(CODESET) if the
locale settings is (still) at "C" - otherwise the CODESET doesn't work
-fix the type of the WACS_* symbols -- this needs to be cchar_t*
-add safeguards where the return value of wcwidth() is used for
loop counters or indexing -- it can be -1
-use more common code in the widechar support case -- in particular
let the wchar functions do the work even if chtype ones were called
-implement wcursyncup/wsyncup/wsyncdown
-somewhat experimental: allow ACS_* variables to refer to WACS_*
table entries -- this way, programs using the old chtype using API
can use UTF8 line drawing on terminals which support UTF8 but not
ACS switching
-fix some logics bugs in UTF8 recognition and ALTCHARSET handling

Prepare curses for the possibility of changing from termcap to terminfo.
term.h #defines lines, pad_char and no_color_video macros which conflict
with existing curses code. We change lines to alines and nlines depending
on use, pad_char to padchar and no_color_video becomes no_color_attributes
but with a strong alias from no_color_video.

Merge in wide curses code done as a Summer of Code project by
Ruibiao Qiu.

branches: 1.1.2;
Wide curses merge

Sprinkle about some cycle wasting checks for the win pointer being
null. Unfortunately, ncurses does this and there is some sloppy code
out there that relies on the check resulting in segfaults in
NetBSD curses which then, of course, gets blamed for the error.

branches: 1.69.2;
Fix for install/56467

Set x to 0 before calling scroll based on a proposed fix by RVP (thanks!)

Backout change to addnstr that broke other applications as n should be
the number of bytes to add - for multibyte characters n will be > 1.

Fix __slk_draw to pass in the actual length of the label instead of
the default label length because wide characters may make the
actual string length longer than the slk display length.

branches: 1.67.2;
Default the character width to 1 if wcwidth fails.

Count character widths not number of bytes when calculating number
of characters to add. Fixes an error detected by slk tests where
a label containing wide characters was not correctly printed.

Fixes for lib/56926 amongst other things:
- plod now correctly accounts for wide characters when plodding
- use erase line when in color mode if the terminal has the capability
- ensure that the CA_CONTINUATION flag is applied consistently to the
subsequent characters in a wide character.
- fix a bunch of refresh bugs that caused inconsistent placement of
wide characters.

Set the last change pointer after adding a character at the bottom right
of a window. This fixes the character missing in the LR of a window.
Thanks to uwe@ for pointing this out.

* Don't redraw the background if the new background character is the
same as the old one. This prevents excessive redraws in some
applications.

* Fix bug introduced when wbkgrndset was fixed, we cannot blindly
replace any instance of the old background character with the new one
because some of those characters were put there by the application
leading to display corruption. So flag characters as background when
they are erased and only update the flagged characters when setting
the background.

Make the default colour pair be pair 0 which appears to match other
curses implementations.

Correct (hopefully) the handling of wide characters.

* Remove the WCOL family of macros, these were "stealing" the upper bits
of a character attribute to store the column width of a character. No
warning was given about this in curses.h which meant it was easy to
accidentally reuse the bits in use by the WCOL macros (we already did).
Add couple of 16bit ints to the character structure iff HAVE_WCHAR is
true to hold the display width and wide char related flags (just
continuation at the moment)
* Convert all instances of WCOL macros to just reference the column width
in the char structure so it is not obfuscated.
* Fix cursor positioning so placing a cursor in the middle of a wide char
actually does just that.
* Fix plod so it understands that if the cursor is going to be positioned
in the middle of a wide char it cannot just reprint the char to get there.
* Fix plodput so it correctly counts the number of output characters for
wide characters.
* Fix slk routines to properly size the wctomb() buffer.

libcurses: remove unreachable statements

Found by lint.

No binary change.

Style fixes most for __CTRACE().

Unifdef DEBUG for CTRACE().

Rework the fix for lib/56224.
Move the scroll check to _cursesi_addwchar
Perform the scroll check before updating the cursor location when
processing \n.

Correct a previous fix for PR lib/56224.
Use wdwitch to determine the width of a wide character on the screen not
the number from mbrtowc which is the number of bytes in the character.
Thanks to Michael Forney for spotting this.

Fix for PR lib/56224
Correct addstr behaviour so it truncates the string in the case where
a string is added on the bottom line of a window where scrolling is
disabled as per the SUSv2 specification.

branches: 1.54.4;
libcurses: fix wrong tab width for addch

In sysinst, the installation screen is indented with tabs. Sysinst uses
msgc, which brings its own text layout engine. This engine does not use
addbytes but addch. In addch, the x position for each tab was advanced
twice as much as needed. The menu items were thus not indented by 8
spaces but by 16, which caused an ugly line break in the German
translation.

This bug largely went unnoticed because most other applications use
addbytes instead, which worked fine all the time. It had been
introduced somewhere between NetBSD 8.0 and NetBSD 9.0.

The code around this bug used aliased variables for win->curx and
win->cury a lot. Getting this right is difficult and needs a thorough
test suite. Even though libcurses has 201 tests, that is not nearly
enough to cover all the relations between the various functions in
libcurses that call each other, crossing API boundaries from internal
to external, doing character conversions on the way and juggling around
4 different types of characters (char, wchar_t, chtype, cchar_t).

The simplest fix was to remove all this aliasing, while keeping the
API the same. If _cursesi_waddbytes is not considered part of the API,
it would be possible to replace px with win->curx in all places, same
for py and win->cury.

The complicated code with the aliasing may have been meant for
performance reasons, but it's hard to see any advantage if both points
of truth need to be synchronized all the time.

Libcurses can be built in 2 modes: with wide character support or
without (-DDISABLE_WCHAR). The test suite only covers the variant with
wide characters. The single-byte variant has to be tested manually.
Running sysinst with the single-byte libcurses produces the correct
layout.

libcurses: fix spelling in comment

Rework previous fix for getch cursor position when cursor is moved
without refresh. If the window is not dirty but the window cursor
position does not match curscr then move the cursor. This fixes
the issues seen in PR lib/54263.

Back out incorrect fix for PR 53617 and fix it in a different way.
Keep track of the cursor location, if getch is called without a refresh
and without pending updates (dirty windows) then move the cursor to the
correct location directly. Doing this prevents unnecessary refreshes.

Fix _cursesi_addwchar so that it performs line wrap. SUSv2 says
add_wch line wraps and updates position. Since wrap is done we are
not past EOL.

_cursesi_addbyte - fix function comment after what looks like an
editing accident.

Avoid curx going beyond end of window when adding a wide character to the
last column.

OK @blymn.

branches: 1.47.6; 1.47.12; 1.47.14;
KNF

KNF

Implement POSIX Curses functions immedok(3) and syncok(3).

If we are inserting spaces to account for a tab, move the x position of the
cursor, otherwise this is a no-op (Carsten Kunze)

remove bogus malloc casts

branches: 1.42.4; 1.42.8;
remove unused variable

Rename the old __waddbytes function to _cursesi_waddbytes and add a
parameter that controls whether or not certain characters in the
string are interpreted or not (things like tab being expanded).

Make __waddbytes a wrapper for _cursesi_waddbytes that passes all
parameters and sets the flag for character interpretation for backward
compatibility.

Fix an incipient bug in _cursesi_waddbytes where garbage would have
been written to the terminal if the terminal TABSIZE was set > 8 and
character interpretation is on.

Convert all internal __waddbytes calls to use _cursesi_waddbytes, fix
the function prototypes and add a new flag that will be used later.

Fix the addchstr family functions so that they call _cursesi_waddbytes
with character interpretation off as per SUSV2.

Add TABSIZE, which is derived from terminfo init_tabs.
Use this when processing \t.
If TABSIZE is set in the environment, this takes precedence.

branches: 1.39.2; 1.39.8;
Fix memset usage.

Observe the following spelling:
- wide character (noun)
- wide-character (adjective)

Inspired by jmc@OpenBSD.

to initialize mbstate_t, use memset instead mbrtowc.

misc fixes and improvements:
-call setlocale(LC_CTYPE, "") before nl_langinfo(CODESET) if the
locale settings is (still) at "C" - otherwise the CODESET doesn't work
-fix the type of the WACS_* symbols -- this needs to be cchar_t*
-add safeguards where the return value of wcwidth() is used for
loop counters or indexing -- it can be -1
-use more common code in the widechar support case -- in particular
let the wchar functions do the work even if chtype ones were called
-implement wcursyncup/wsyncup/wsyncdown
-somewhat experimental: allow ACS_* variables to refer to WACS_*
table entries -- this way, programs using the old chtype using API
can use UTF8 line drawing on terminals which support UTF8 but not
ACS switching
-fix some logics bugs in UTF8 recognition and ALTCHARSET handling

Prepare curses for the possibility of changing from termcap to terminfo.
term.h #defines lines, pad_char and no_color_video macros which conflict
with existing curses code. We change lines to alines and nlines depending
on use, pad_char to padchar and no_color_video becomes no_color_attributes
but with a strong alias from no_color_video.

use mbrtowc() instead of mbtowc().

branches: 1.33.8;
Fix the handling for added carriage return characters.

Should fix the "staircase effect" part of PR 36560.

branches: 1.32.4;
Merge in wide curses code done as a Summer of Code project by
Ruibiao Qiu.

Add debug "areas" that allow selective debugging by setting the
"CURSES_TRACE_MASK" environment variable. Postive vales include
debug areas, negative values exclude them.

branches: 1.30.6;
Background characters and attributes don't need to be kept per character
cell, as they are merged when characters are added. Remove the per cell
storage and clarify the manual page. Pointed out by ruibiao@.

Revert most of rev 1.27 of addbytes.c and associated changes.
Posix requires that adding '\n' does clrtoeol() and 'x = 0'.
(Making "\r\n" erase the text that has just been displayed.)
Remove __NONL test from addbytes, __NONL is a property of the output device.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

Do something more sensible for waddbytes(..., "\r\n", ...);
I'm not sure about the clrtoeol() at all though - maybe it should
be done as part of scroll()?
Leave 'x' alone when __NONL set.

Stop blank line being added when newline is processed with __ISPASTEOL set.

Fix resize of windows with subwins.
Let window size be given as a -ver number => lines from bottom.
Fix trace calls of pointers
(approved by Brett Lumn)

Always update the change pointers. Otherwise, we could end up not
displaying 'blank' characters when overlapping windows are displayed.
(Exposed by changes in revision 1.49 of refresh.c.)

* Added new function idcok - this closes PR 10802
* Added sentinels to the line structures when in debug mode to try
to pick up data overwrite problems, if they occur.

Implement scrolling regions :
has_ic()
has_il()
setscrreg()
wsetscrreg()

Rename variables refering to termcap capabilities from NN to __tc_nn. Case
adjusted to match termcap capability. A few other variable names renamed too
(ones related to or derived from termcap variables).

Massively simplify some logic.

Set background character and attributes for added characters.

Don't reset firstchp and lastchp even if this line was not dirty.
They could have been set previously by a parent window or sub-window.

Added functions to replace what were previously macros in curses.h
(this is a requirement of SUSv2) - the old macro behaviour can be
restored by defining _CURSES_USE_MACROS.
Changed function prototypes to use ANSI style.
All externally visible functions now have ANSI style declarations.

Add color attribute manipulation.

Made data structures opaque

branches: 1.14.6;
Get rid of the evil trailing spaces and tabs.

Upgrades the standard NetBSD curses library to provide some
of the SYSV curses facilities. The added features are the collapsing
of arrow and function keysequences (as defined by termcap for the
terminal) into symbolic code returns thus relieving the application of
recognising multi-character key sequences. Other features are the
capability to perform a timed wait for a key (good for when you are
not sure if there is a keypress ready or not) and the capability for
turning off the inter-key timeout when assembling multi-character
function keys.

this work was done by Julian Coleman <J.D.Coleman@newcastle.ac.uk>
and blymn@baea.com.au (Brett Lymn). i'm just integrating it. thanks
HEAPS guys!

remove obsolete register declarations

RCSid police, fix warnings

branches: 1.10.2;
clean up import

changes from branch

repeat after me: "I hate rcs ids"

branches: 1.7.2;
update to new version from berkeley. doesn't compile yet, nor
does it have rcsid's. this is for diffs.

waddbytes() is private; make the rest of *addbytes() be.
Make waddbytes() and waddstr() take a `const char *'.

New version from uunet.

Add RCS identifiers.

added Andrew Chernov's patch set:
Standard curses library use eight bit for standout mode, so
8-bit characters displays like highlighted 7-bit characters.

This patch produce library which is fully compatible with all curses
programs and add 8-bit chars to all input/display functions.
---
I don't think, that any programs wish to use internal curses
attribute _STANDOUT directly, in expressions like:
addch( ch | _STANDOUT );
Normal interface use standout() and standend() functions instead.
Many programs use 'char' type (with sign extention) for input characters
and sign extention becomes _STANDOUT mode in this case.
So, I refuse this future and allow 8-bit characters for programs,
which is designed for 7-bit only ('char' type using instead of
'unsigned char').
---
This small patch fix unpleasant standard curses bug:
curses can't expand TAB at all (but tries).
A man who wrote this curses misplace SYNC_IN and SYNCH_OUT,
this patch exchange macro calls.

This patch useful for standard 7-bit curses too, for this
you must delete '_' symbol before waddbytes and apply patch.
---
Oh, NO! This curses are really buggy!

This small patch fix following problem:
[ assumed scrollok(stdscr, TRUE) ]
when addch(ch) at lower right corner of screen, curses are realy
gone mad instead if simple scrolling... Curses code assumed that
this will be done correctly, but implement it with two bugs.

Make tabs actually work.

branches: 1.1.1;
Initial revision

Style fixes most for __CTRACE().

Expand __CTRACE() to __nothing #ifndef DEBUG.

Remove most of #ifdef DEBUG around __CTRACE() calls.

No binary changes, except for line numbers for assert().

Rework previous fix for getch cursor position when cursor is moved
without refresh. If the window is not dirty but the window cursor
position does not match curscr then move the cursor. This fixes
the issues seen in PR lib/54263.

Back out incorrect fix for PR 53617 and fix it in a different way.
Keep track of the cursor location, if getch is called without a refresh
and without pending updates (dirty windows) then move the cursor to the
correct location directly. Doing this prevents unnecessary refreshes.

waddch - instead of enclosing every statement in #ifdef HAVE_WCHAR
just provide two separate definitions.

Same object code is generated for all four combinations of debug/wchar.

branches: 1.18.12; 1.18.14;
KNF

branches: 1.17.8;
Rename the old __waddbytes function to _cursesi_waddbytes and add a
parameter that controls whether or not certain characters in the
string are interpreted or not (things like tab being expanded).

Make __waddbytes a wrapper for _cursesi_waddbytes that passes all
parameters and sets the flag for character interpretation for backward
compatibility.

Fix an incipient bug in _cursesi_waddbytes where garbage would have
been written to the terminal if the terminal TABSIZE was set > 8 and
character interpretation is on.

Convert all internal __waddbytes calls to use _cursesi_waddbytes, fix
the function prototypes and add a new flag that will be used later.

Fix the addchstr family functions so that they call _cursesi_waddbytes
with character interpretation off as per SUSV2.

branches: 1.16.6; 1.16.12;
misc fixes and improvements:
-call setlocale(LC_CTYPE, "") before nl_langinfo(CODESET) if the
locale settings is (still) at "C" - otherwise the CODESET doesn't work
-fix the type of the WACS_* symbols -- this needs to be cchar_t*
-add safeguards where the return value of wcwidth() is used for
loop counters or indexing -- it can be -1
-use more common code in the widechar support case -- in particular
let the wchar functions do the work even if chtype ones were called
-implement wcursyncup/wsyncup/wsyncdown
-somewhat experimental: allow ACS_* variables to refer to WACS_*
table entries -- this way, programs using the old chtype using API
can use UTF8 line drawing on terminals which support UTF8 but not
ACS switching
-fix some logics bugs in UTF8 recognition and ALTCHARSET handling

Merge in wide curses code done as a Summer of Code project by
Ruibiao Qiu.

Add debug "areas" that allow selective debugging by setting the
"CURSES_TRACE_MASK" environment variable. Postive vales include
debug areas, negative values exclude them.

branches: 1.13.18;
Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

* Added new function idcok - this closes PR 10802
* Added sentinels to the line structures when in debug mode to try
to pick up data overwrite problems, if they occur.

Added functions to replace what were previously macros in curses.h
(this is a requirement of SUSv2) - the old macro behaviour can be
restored by defining _CURSES_USE_MACROS.
Changed function prototypes to use ANSI style.
All externally visible functions now have ANSI style declarations.

Made data structures opaque

branches: 1.9.6;
Upgrades the standard NetBSD curses library to provide some
of the SYSV curses facilities. The added features are the collapsing
of arrow and function keysequences (as defined by termcap for the
terminal) into symbolic code returns thus relieving the application of
recognising multi-character key sequences. Other features are the
capability to perform a timed wait for a key (good for when you are
not sure if there is a keypress ready or not) and the capability for
turning off the inter-key timeout when assembling multi-character
function keys.

this work was done by Julian Coleman <J.D.Coleman@newcastle.ac.uk>
and blymn@baea.com.au (Brett Lymn). i'm just integrating it. thanks
HEAPS guys!

RCSid police, fix warnings

branches: 1.7.2;
clean up import

repeat after me: "I hate rcs ids"

update to new version from berkeley. doesn't compile yet, nor
does it have rcsid's. this is for diffs.

New version from uunet.

Add RCS identifiers.

added Andrew Chernov's patch set:
Standard curses library use eight bit for standout mode, so
8-bit characters displays like highlighted 7-bit characters.

This patch produce library which is fully compatible with all curses
programs and add 8-bit chars to all input/display functions.
---
I don't think, that any programs wish to use internal curses
attribute _STANDOUT directly, in expressions like:
addch( ch | _STANDOUT );
Normal interface use standout() and standend() functions instead.
Many programs use 'char' type (with sign extention) for input characters
and sign extention becomes _STANDOUT mode in this case.
So, I refuse this future and allow 8-bit characters for programs,
which is designed for 7-bit only ('char' type using instead of
'unsigned char').
---
This small patch fix unpleasant standard curses bug:
curses can't expand TAB at all (but tries).
A man who wrote this curses misplace SYNC_IN and SYNCH_OUT,
this patch exchange macro calls.

This patch useful for standard 7-bit curses too, for this
you must delete '_' symbol before waddbytes and apply patch.
---
Oh, NO! This curses are really buggy!

This small patch fix following problem:
[ assumed scrollok(stdscr, TRUE) ]
when addch(ch) at lower right corner of screen, curses are realy
gone mad instead if simple scrolling... Curses code assumed that
this will be done correctly, but implement it with two bugs.

branches: 1.1.1;
Initial revision

Sprinkle about some cycle wasting checks for the win pointer being
null. Unfortunately, ncurses does this and there is some sloppy code
out there that relies on the check resulting in segfaults in
NetBSD curses which then, of course, gets blamed for the error.

branches: 1.9.4;
Expand __CTRACE() to __nothing #ifndef DEBUG.

Remove most of #ifdef DEBUG around __CTRACE() calls.

No binary changes, except for line numbers for assert().

Rework previous fix for getch cursor position when cursor is moved
without refresh. If the window is not dirty but the window cursor
position does not match curscr then move the cursor. This fixes
the issues seen in PR lib/54263.

Back out incorrect fix for PR 53617 and fix it in a different way.
Keep track of the cursor location, if getch is called without a refresh
and without pending updates (dirty windows) then move the cursor to the
correct location directly. Doing this prevents unnecessary refreshes.

branches: 1.6.26;
Rename the old __waddbytes function to _cursesi_waddbytes and add a
parameter that controls whether or not certain characters in the
string are interpreted or not (things like tab being expanded).

Make __waddbytes a wrapper for _cursesi_waddbytes that passes all
parameters and sets the flag for character interpretation for backward
compatibility.

Fix an incipient bug in _cursesi_waddbytes where garbage would have
been written to the terminal if the terminal TABSIZE was set > 8 and
character interpretation is on.

Convert all internal __waddbytes calls to use _cursesi_waddbytes, fix
the function prototypes and add a new flag that will be used later.

Fix the addchstr family functions so that they call _cursesi_waddbytes
with character interpretation off as per SUSV2.

Truncate string to RHS of the window - SUSv2 says we should.

branches: 1.4.4; 1.4.26;
Remove clause 3 and 4 from TNF licenses

branches: 1.3.10;
Add debug "areas" that allow selective debugging by setting the
"CURSES_TRACE_MASK" environment variable. Postive vales include
debug areas, negative values exclude them.

branches: 1.2.18;
Make i an int to please lint and remove a cast.

Add addchstr() family of functions.
Based on mail from Douwe Kiela.
Fixes PR lib/21285 by Thomas Klausner.

Add more debug so a call to waddbytes can be traced to the caller.

Add a bit more debug.

Style fixes most for __CTRACE().

Expand __CTRACE() to __nothing #ifndef DEBUG.

Remove most of #ifdef DEBUG around __CTRACE() calls.

No binary changes, except for line numbers for assert().

Rework previous fix for getch cursor position when cursor is moved
without refresh. If the window is not dirty but the window cursor
position does not match curscr then move the cursor. This fixes
the issues seen in PR lib/54263.

Back out incorrect fix for PR 53617 and fix it in a different way.
Keep track of the cursor location, if getch is called without a refresh
and without pending updates (dirty windows) then move the cursor to the
correct location directly. Doing this prevents unnecessary refreshes.

branches: 1.15.14;
KNF.
Normalise coding style.
White space police.
Sprinkle some extra braces to make the flow more clear.

No functional changes.

branches: 1.14.6;
Remove bogus length check - SUSV2 says add(n)str wraps and performs
special character processing so we should not be trying to limit the
length to the screen edge. This partially fixes PR 48827, the test case
works now.

branches: 1.13.6;
Don't wrap added string

branches: 1.12.34; 1.12.40;
Merge in wide curses code done as a Summer of Code project by
Ruibiao Qiu.

branches: 1.11.18;
Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

change behavior of waddnstr(w, s, 0) to be more conformant to XCURSES.
(see comment for detail)

branches: 1.9.4;
Multiple fixes:
* Added Bill's fixes for errors when compiling with WARNS=1
* Incorporated fixes to make usage of unctrl consistent in debug and
made improvements to ctrace - it now timestamps it's output better.
* Reduced the number of mallocs done by __init_getch by allocating key
structs in bunches instead of singly.
* Removed the shadowing of global declarations in newwin and subwin
functions

Add waddstr() macro replacement.

Added functions to replace what were previously macros in curses.h
(this is a requirement of SUSv2) - the old macro behaviour can be
restored by defining _CURSES_USE_MACROS.
Changed function prototypes to use ANSI style.
All externally visible functions now have ANSI style declarations.

Made data structures opaque

Upgrades the standard NetBSD curses library to provide some
of the SYSV curses facilities. The added features are the collapsing
of arrow and function keysequences (as defined by termcap for the
terminal) into symbolic code returns thus relieving the application of
recognising multi-character key sequences. Other features are the
capability to perform a timed wait for a key (good for when you are
not sure if there is a keypress ready or not) and the capability for
turning off the inter-key timeout when assembling multi-character
function keys.

this work was done by Julian Coleman <J.D.Coleman@newcastle.ac.uk>
and blymn@baea.com.au (Brett Lymn). i'm just integrating it. thanks
HEAPS guys!

RCSid police, fix warnings

branches: 1.3.2;
clean up import

repeat after me: "I hate rcs ids"

branches: 1.1.1;
update to new version from berkeley. doesn't compile yet, nor
does it have rcsid's. this is for diffs.

Clean up deleted files.

waddbytes() is private; make the rest of *addbytes() be.
Make waddbytes() and waddstr() take a `const char *'.

New version from uunet.

Add RCS identifiers.

added Andrew Chernov's patch set:
Standard curses library use eight bit for standout mode, so
8-bit characters displays like highlighted 7-bit characters.

This patch produce library which is fully compatible with all curses
programs and add 8-bit chars to all input/display functions.
---
I don't think, that any programs wish to use internal curses
attribute _STANDOUT directly, in expressions like:
addch( ch | _STANDOUT );
Normal interface use standout() and standend() functions instead.
Many programs use 'char' type (with sign extention) for input characters
and sign extention becomes _STANDOUT mode in this case.
So, I refuse this future and allow 8-bit characters for programs,
which is designed for 7-bit only ('char' type using instead of
'unsigned char').
---
This small patch fix unpleasant standard curses bug:
curses can't expand TAB at all (but tries).
A man who wrote this curses misplace SYNC_IN and SYNCH_OUT,
this patch exchange macro calls.

This patch useful for standard 7-bit curses too, for this
you must delete '_' symbol before waddbytes and apply patch.
---
Oh, NO! This curses are really buggy!

This small patch fix following problem:
[ assumed scrollok(stdscr, TRUE) ]
when addch(ch) at lower right corner of screen, curses are realy
gone mad instead if simple scrolling... Curses code assumed that
this will be done correctly, but implement it with two bugs.

branches: 1.1.1;
Initial revision

Sprinkle about some cycle wasting checks for the win pointer being
null. Unfortunately, ncurses does this and there is some sloppy code
out there that relies on the check resulting in segfaults in
NetBSD curses which then, of course, gets blamed for the error.

branches: 1.8.4;
Style fixes most for __CTRACE().

Expand __CTRACE() to __nothing #ifndef DEBUG.

Remove most of #ifdef DEBUG around __CTRACE() calls.

No binary changes, except for line numbers for assert().

Rework previous fix for getch cursor position when cursor is moved
without refresh. If the window is not dirty but the window cursor
position does not match curscr then move the cursor. This fixes
the issues seen in PR lib/54263.

Back out incorrect fix for PR 53617 and fix it in a different way.
Keep track of the cursor location, if getch is called without a refresh
and without pending updates (dirty windows) then move the cursor to the
correct location directly. Doing this prevents unnecessary refreshes.

Drop HAVE_WCHAR ifdefs from code that is not even compiled with !HAVE_WCHAR.

We still try to mainain the ability to build our curses with
!HAVE_WCHAR, but it doesn't make sense to provide stubs for new wide
API functions that just error out when !HAVE_WCHAR. Any code that
only uses old API (and can work with !HAVE_WCHAR curses) doesn't use
those new functions. The code that uses new API obviosly cannot work
when all the new API is stubbed out.

So the plan is to drop the stubs. This commit does that for files
that are not even compiled with !HAVE_WCHAR (not only those stubs are
useless, they were not even there to begin with).

Same object code is generated for the normal HAVE_WCHAR case. Nothing
is even recompiled for !HAVE_WCHAR.

Ok by blymn@ jdc@ roy@

branches: 1.3.12; 1.3.14;
KNF.
Normalise coding style.
White space police.
Sprinkle some extra braces to make the flow more clear.

No functional changes.

branches: 1.2.58;
Merge in wide curses code done as a Summer of Code project by
Ruibiao Qiu.

branches: 1.1.2;
Wide curses merge

Sprinkle about some cycle wasting checks for the win pointer being
null. Unfortunately, ncurses does this and there is some sloppy code
out there that relies on the check resulting in segfaults in
NetBSD curses which then, of course, gets blamed for the error.

branches: 1.35.4;
Fix for lib/57050
Perform a sanity check on the window parameter being passed and return
ERR if it is null. This prevents buggy code crashing.

Make the default colour pair be pair 0 which appears to match other
curses implementations.

fix various typos in comments and log messages.

Expand __CTRACE() to __nothing #ifndef DEBUG.

Remove most of #ifdef DEBUG around __CTRACE() calls.

No binary changes, except for line numbers for assert().

#ifdef HAVE_WCHAR around enhanced curses stuff.

attron(), attroff() - don't take a shortcut.

wattr_set - turn off all wide attributes (fix unedited copy/paste).

Rename the reserved argument from "opt" to "opts" to match SUS text.

Refactor. Move code to turn attributes on/off into separate
functions. Express both old and new functions to manipulate
attributes using those functions. Check that the the new API's opts
argument (reserved by the standard for future use) is NULL and error
out if not (like getcchar/setcchar). No functional change intended.

Drop a few redundant casts of a variable to its own type.

Move getattrs() and wcolor_set() so that they are with their peers and
so that wide and non-wide functions are in the same order. While here,
make __wcolor_set() static. No functional change intended.

Fix indentation.

branches: 1.23.12; 1.23.14;
Use the terminal of the SCREEN of the WINDOW rather than cur_term
for window attribute functions.

KNF.
Normalise coding style.
White space police.
Sprinkle some extra braces to make the flow more clear.

No functional changes.

branches: 1.21.28;
Little bit more debug information.

Userland now builds and uses terminfo instead of termcap.

OK: core@, jdc@

avoid c99 on DEBUG.

branches: 1.18.2;
Remove clause 3 and 4 from TNF licenses

branches: 1.17.2;
Make this compile when HAVE_WCHAR is not defined.

Add termattrs() and term_attrs() (requested by wiz@).
Only allow standout and underline if the terminal can do them.

branches: 1.15.4;
Merge in wide curses code done as a Summer of Code project by
Ruibiao Qiu.

Add debug "areas" that allow selective debugging by setting the
"CURSES_TRACE_MASK" environment variable. Postive vales include
debug areas, negative values exclude them.

branches: 1.13.18;
Don't use NULL to compare against an int.

Add attr_set() group of functions.
Fixes PR lib/20034 by Thomas Klausner.

Fix resize of windows with subwins.
Let window size be given as a -ver number => lines from bottom.
Fix trace calls of pointers
(approved by Brett Lumn)

Remove check for attribute/colour conflict.
This is now handled in refresh.c as it's not possible to handle the
conflict with background colour here.

Rename variables refering to termcap capabilities from NN to __tc_nn. Case
adjusted to match termcap capability. A few other variable names renamed too
(ones related to or derived from termcap variables).

New function getattrs().
Add win to debug output.

Clean up a bunch more logic.

* Added rcs id line to files missing it.
* Added code to __restartwin to restore meta and cursor visibility states
* Added code to __stopwin to disable meta.
* Added the *line group of functions for drawing character lines.

Add extra debug output (for wattrset()).

Added functions to replace what were previously macros in curses.h
(this is a requirement of SUSv2) - the old macro behaviour can be
restored by defining _CURSES_USE_MACROS.
Changed function prototypes to use ANSI style.
All externally visible functions now have ANSI style declarations.

Copyright assgned to TNF.
Add check for conflict with colour.
Remove code duplication in wattrset().
Shrink one line comments.
Consolidate DEBUG output.

Made data structures opaque

branches: 1.1.6;
Upgrades the standard NetBSD curses library to provide some
of the SYSV curses facilities. The added features are the collapsing
of arrow and function keysequences (as defined by termcap for the
terminal) into symbolic code returns thus relieving the application of
recognising multi-character key sequences. Other features are the
capability to perform a timed wait for a key (good for when you are
not sure if there is a keypress ready or not) and the capability for
turning off the inter-key timeout when assembling multi-character
function keys.

this work was done by Julian Coleman <J.D.Coleman@newcastle.ac.uk>
and blymn@baea.com.au (Brett Lymn). i'm just integrating it. thanks
HEAPS guys!

Sprinkle about some cycle wasting checks for the win pointer being
null. Unfortunately, ncurses does this and there is some sloppy code
out there that relies on the check resulting in segfaults in
NetBSD curses which then, of course, gets blamed for the error.

branches: 1.33.4;
Fixes for lib/56926 amongst other things:
- plod now correctly accounts for wide characters when plodding
- use erase line when in color mode if the terminal has the capability
- ensure that the CA_CONTINUATION flag is applied consistently to the
subsequent characters in a wide character.
- fix a bunch of refresh bugs that caused inconsistent placement of
wide characters.

Don't force the refresh, it doesn't really need it.

* Don't redraw the background if the new background character is the
same as the old one. This prevents excessive redraws in some
applications.

* Fix bug introduced when wbkgrndset was fixed, we cannot blindly
replace any instance of the old background character with the new one
because some of those characters were put there by the application
leading to display corruption. So flag characters as background when
they are erased and only update the flagged characters when setting
the background.

fix for PR 55496

* Fix bkgrndset so that it actually sets the background character in
in line with the SUSv2 specification.

* Add an internal function to copy a complex character

* Make the previously static celleq function into a libcurses private
function so that it can be called in other files.

Make the default colour pair be pair 0 which appears to match other
curses implementations.

Correct (hopefully) the handling of wide characters.

* Remove the WCOL family of macros, these were "stealing" the upper bits
of a character attribute to store the column width of a character. No
warning was given about this in curses.h which meant it was easy to
accidentally reuse the bits in use by the WCOL macros (we already did).
Add couple of 16bit ints to the character structure iff HAVE_WCHAR is
true to hold the display width and wide char related flags (just
continuation at the moment)
* Convert all instances of WCOL macros to just reference the column width
in the char structure so it is not obfuscated.
* Fix cursor positioning so placing a cursor in the middle of a wide char
actually does just that.
* Fix plod so it understands that if the cursor is going to be positioned
in the middle of a wide char it cannot just reprint the char to get there.
* Fix plodput so it correctly counts the number of output characters for
wide characters.
* Fix slk routines to properly size the wctomb() buffer.

Style fixes most for __CTRACE().

Expand __CTRACE() to __nothing #ifndef DEBUG.

Remove most of #ifdef DEBUG around __CTRACE() calls.

No binary changes, except for line numbers for assert().

wbkgd - when updating window rendition for the new background character,
it's the old background characters that need to be updated, not spaces.

While here, simplify and also fix the bug introduced in 1.20 (that
lost the default color) - actually use the results of wbkgdset().

wbkgrnd - do not duplicate code that's already in wbkgrndset()

When we remove default color from attributes, just clear all __COLOR.
It's both a nono-optmization and matches the test used in counterpart
code that adds default color when none is set.

Reorder "bkgrnd" functions to match the order of old "bkgd" functions.

Don't fuse HAVE_WCHAR and (trivial) !HAVE_WCHAR bodies into single
function definition. Instead provide two sets of definitions under
single #ifdef. Same object code is generated for both HAVE_WCHAR and
!HAVE_WCHAR.

wbkgd - do not duplicate the code that's already in wbkgdset()
that we do call anyway.

Fix comments on bkgdset() and friends to match reality.

Don't mix private and public names for the same thing in one statement.
While here, fix harmless edito in a debug call.

branches: 1.17.12; 1.17.14;
KNF.
Normalise coding style.
White space police.
Sprinkle some extra braces to make the flow more clear.

No functional changes.

remove bogus malloc casts

branches: 1.15.28;
Prepare curses for the possibility of changing from termcap to terminfo.
term.h #defines lines, pad_char and no_color_video macros which conflict
with existing curses code. We change lines to alines and nlines depending
on use, pad_char to padchar and no_color_video becomes no_color_attributes
but with a strong alias from no_color_video.

Remove clause 3 and 4 from TNF licenses

branches: 1.13.6;
Set the column width when changing the background using wbkgd(), otherwise
we will see zero width characters in refresh.c:makech().

branches: 1.12.4;
Fix some compiler warnings.
Remove shadowed variable declarations when DEBUG is defined.

Merge in wide curses code done as a Summer of Code project by
Ruibiao Qiu.

Add debug "areas" that allow selective debugging by setting the
"CURSES_TRACE_MASK" environment variable. Postive vales include
debug areas, negative values exclude them.

branches: 1.9.6;
Background characters and attributes don't need to be kept per character
cell, as they are merged when characters are added. Remove the per cell
storage and clarify the manual page. Pointed out by ruibiao@.

Fix resize of windows with subwins.
Let window size be given as a -ver number => lines from bottom.
Fix trace calls of pointers
(approved by Brett Lumn)

Set the curses default colours to white on black when using colour.
See the Single UNIX Specification, Version 2 :

http://www.opengroup.org/onlinepubs/007908799/xcurses/can_change_color.html

Also, add the functions :

use_default_colors();
assume_default_colors(fore, back);

(from ncurses) that allow the terminal default colours or user-specified
default colours to be used.

* Added rcs id line to files missing it.
* Added code to __restartwin to restore meta and cursor visibility states
* Added code to __stopwin to disable meta.
* Added the *line group of functions for drawing character lines.

Don't replace background character with null character.
Set new background character and attributes in wbkgd().

Add bkgd() and bkgdset() (which were previously just macros).

Added functions to replace what were previously macros in curses.h
(this is a requirement of SUSv2) - the old macro behaviour can be
restored by defining _CURSES_USE_MACROS.
Changed function prototypes to use ANSI style.
All externally visible functions now have ANSI style declarations.

Nuke unused variables.

Background manipulation routines.

Expand __CTRACE() to __nothing #ifndef DEBUG.

Remove most of #ifdef DEBUG around __CTRACE() calls.

No binary changes, except for line numbers for assert().

KNF.
Normalise coding style.
White space police.
Sprinkle some extra braces to make the flow more clear.

No functional changes.

branches: 1.8.28;
Userland now builds and uses terminfo instead of termcap.

OK: core@, jdc@

Remove clause 3 and 4 from TNF licenses

branches: 1.6.10;
Add debug "areas" that allow selective debugging by setting the
"CURSES_TRACE_MASK" environment variable. Postive vales include
debug areas, negative values exclude them.

branches: 1.5.20;
Rename variables refering to termcap capabilities from NN to __tc_nn. Case
adjusted to match termcap capability. A few other variable names renamed too
(ones related to or derived from termcap variables).

* Added rcs id line to files missing it.
* Added code to __restartwin to restore meta and cursor visibility states
* Added code to __stopwin to disable meta.
* Added the *line group of functions for drawing character lines.

* Fix longname behaviour so it returns the last alias for the terminal
name which, by convention, is the verbose terminal description.
* Fix compile errors when DEBUG defined.

Copyright assgned to TNF.

Upgrades the standard NetBSD curses library to provide some
of the SYSV curses facilities. The added features are the collapsing
of arrow and function keysequences (as defined by termcap for the
terminal) into symbolic code returns thus relieving the application of
recognising multi-character key sequences. Other features are the
capability to perform a timed wait for a key (good for when you are
not sure if there is a keypress ready or not) and the capability for
turning off the inter-key timeout when assembling multi-character
function keys.

this work was done by Julian Coleman <J.D.Coleman@newcastle.ac.uk>
and blymn@baea.com.au (Brett Lymn). i'm just integrating it. thanks
HEAPS guys!

make it compile again.

Sprinkle about some cycle wasting checks for the win pointer being
null. Unfortunately, ncurses does this and there is some sloppy code
out there that relies on the check resulting in segfaults in
NetBSD curses which then, of course, gets blamed for the error.

branches: 1.24.4;

* Don't redraw the background if the new background character is the
same as the old one. This prevents excessive redraws in some
applications.

* Fix bug introduced when wbkgrndset was fixed, we cannot blindly
replace any instance of the old background character with the new one
because some of those characters were put there by the application
leading to display corruption. So flag characters as background when
they are erased and only update the flagged characters when setting
the background.

Make the default colour pair be pair 0 which appears to match other
curses implementations.

Correct (hopefully) the handling of wide characters.

* Remove the WCOL family of macros, these were "stealing" the upper bits
of a character attribute to store the column width of a character. No
warning was given about this in curses.h which meant it was easy to
accidentally reuse the bits in use by the WCOL macros (we already did).
Add couple of 16bit ints to the character structure iff HAVE_WCHAR is
true to hold the display width and wide char related flags (just
continuation at the moment)
* Convert all instances of WCOL macros to just reference the column width
in the char structure so it is not obfuscated.
* Fix cursor positioning so placing a cursor in the middle of a wide char
actually does just that.
* Fix plod so it understands that if the cursor is going to be positioned
in the middle of a wide char it cannot just reprint the char to get there.
* Fix plodput so it correctly counts the number of output characters for
wide characters.
* Fix slk routines to properly size the wctomb() buffer.

Add a bit more debug.

Style fixes most for __CTRACE().

Expand __CTRACE() to __nothing #ifndef DEBUG.

Remove most of #ifdef DEBUG around __CTRACE() calls.

No binary changes, except for line numbers for assert().

Checks for bottom right corner were reversed.

KNF.
Normalise coding style.
White space police.
Sprinkle some extra braces to make the flow more clear.

No functional changes.

remove bogus malloc casts

branches: 1.15.10;
Also merge in background attributes.

branches: 1.14.6; 1.14.8; 1.14.12;
Allow attributes to be applied to the default line drawing characters
by just passing attributes as arguments to the wborder call.

misc fixes and improvements:
-call setlocale(LC_CTYPE, "") before nl_langinfo(CODESET) if the
locale settings is (still) at "C" - otherwise the CODESET doesn't work
-fix the type of the WACS_* symbols -- this needs to be cchar_t*
-add safeguards where the return value of wcwidth() is used for
loop counters or indexing -- it can be -1
-use more common code in the widechar support case -- in particular
let the wchar functions do the work even if chtype ones were called
-implement wcursyncup/wsyncup/wsyncdown
-somewhat experimental: allow ACS_* variables to refer to WACS_*
table entries -- this way, programs using the old chtype using API
can use UTF8 line drawing on terminals which support UTF8 but not
ACS switching
-fix some logics bugs in UTF8 recognition and ALTCHARSET handling

Prepare curses for the possibility of changing from termcap to terminfo.
term.h #defines lines, pad_char and no_color_video macros which conflict
with existing curses code. We change lines to alines and nlines depending
on use, pad_char to padchar and no_color_video becomes no_color_attributes
but with a strong alias from no_color_video.

Remove clause 3 and 4 from TNF licenses

branches: 1.10.10;
Merge in wide curses code done as a Summer of Code project by
Ruibiao Qiu.

Add debug "areas" that allow selective debugging by setting the
"CURSES_TRACE_MASK" environment variable. Postive vales include
debug areas, negative values exclude them.

branches: 1.8.6;
Background characters and attributes don't need to be kept per character
cell, as they are merged when characters are added. Remove the per cell
storage and clarify the manual page. Pointed out by ruibiao@.

Don't delete attributes when character 0 (default) is passed in.
Minor KNF.

* Added rcs id line to files missing it.
* Added code to __restartwin to restore meta and cursor visibility states
* Added code to __stopwin to disable meta.
* Added the *line group of functions for drawing character lines.

Set background character and attributes for added characters.

Added functions to replace what were previously macros in curses.h
(this is a requirement of SUSv2) - the old macro behaviour can be
restored by defining _CURSES_USE_MACROS.
Changed function prototypes to use ANSI style.
All externally visible functions now have ANSI style declarations.

Remove attributes of characters displayed with -DDEBUG.
Add color manipulation.

Made data structures opaque

branches: 1.1.2;
file border.c was initially added on branch curses-v3.

KNF.
Normalise coding style.
White space police.
Sprinkle some extra braces to make the flow more clear.

No functional changes.

branches: 1.14.58;
Merge in wide curses code done as a Summer of Code project by
Ruibiao Qiu.

branches: 1.13.18;
Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

Added functions to replace what were previously macros in curses.h
(this is a requirement of SUSv2) - the old macro behaviour can be
restored by defining _CURSES_USE_MACROS.
Changed function prototypes to use ANSI style.
All externally visible functions now have ANSI style declarations.

Made data structures opaque

branches: 1.10.6;
Upgrades the standard NetBSD curses library to provide some
of the SYSV curses facilities. The added features are the collapsing
of arrow and function keysequences (as defined by termcap for the
terminal) into symbolic code returns thus relieving the application of
recognising multi-character key sequences. Other features are the
capability to perform a timed wait for a key (good for when you are
not sure if there is a keypress ready or not) and the capability for
turning off the inter-key timeout when assembling multi-character
function keys.

this work was done by Julian Coleman <J.D.Coleman@newcastle.ac.uk>
and blymn@baea.com.au (Brett Lymn). i'm just integrating it. thanks
HEAPS guys!

remove obsolete register declarations

RCSid police, fix warnings

branches: 1.7.2;
clean up import

repeat after me: "I hate rcs ids"

update to new version from berkeley. doesn't compile yet, nor
does it have rcsid's. this is for diffs.

New version from uunet.

Add RCS identifiers.

added Andrew Chernov's patch set:
Standard curses library use eight bit for standout mode, so
8-bit characters displays like highlighted 7-bit characters.

This patch produce library which is fully compatible with all curses
programs and add 8-bit chars to all input/display functions.
---
I don't think, that any programs wish to use internal curses
attribute _STANDOUT directly, in expressions like:
addch( ch | _STANDOUT );
Normal interface use standout() and standend() functions instead.
Many programs use 'char' type (with sign extention) for input characters
and sign extention becomes _STANDOUT mode in this case.
So, I refuse this future and allow 8-bit characters for programs,
which is designed for 7-bit only ('char' type using instead of
'unsigned char').
---
This small patch fix unpleasant standard curses bug:
curses can't expand TAB at all (but tries).
A man who wrote this curses misplace SYNC_IN and SYNCH_OUT,
this patch exchange macro calls.

This patch useful for standard 7-bit curses too, for this
you must delete '_' symbol before waddbytes and apply patch.
---
Oh, NO! This curses are really buggy!

This small patch fix following problem:
[ assumed scrollok(stdscr, TRUE) ]
when addch(ch) at lower right corner of screen, curses are realy
gone mad instead if simple scrolling... Curses code assumed that
this will be done correctly, but implement it with two bugs.

branches: 1.1.1;
Initial revision

setcchar - don't lose combining marks to a typo.

We copy len wchars but set the length field to 1, instead of len.
From Naman Jain in PR lib/55443

Drop HAVE_WCHAR ifdefs from code that is not even compiled with !HAVE_WCHAR.

We still try to mainain the ability to build our curses with
!HAVE_WCHAR, but it doesn't make sense to provide stubs for new wide
API functions that just error out when !HAVE_WCHAR. Any code that
only uses old API (and can work with !HAVE_WCHAR curses) doesn't use
those new functions. The code that uses new API obviosly cannot work
when all the new API is stubbed out.

So the plan is to drop the stubs. This commit does that for files
that are not even compiled with !HAVE_WCHAR (not only those stubs are
useless, they were not even there to begin with).

Same object code is generated for the normal HAVE_WCHAR case. Nothing
is even recompiled for !HAVE_WCHAR.

Ok by blymn@ jdc@ roy@

Compare pointers to NULL, not to zero.

Drop bogus cast.

Don't hide assignments inside tests.

Fix color pair handling. color_pair argument is a pair number.

branches: 1.6.12; 1.6.14;
KNF.
Normalise coding style.
White space police.
Sprinkle some extra braces to make the flow more clear.

No functional changes.

branches: 1.5.28;
Observe the following spelling:
- wide character (noun)
- wide-character (adjective)

Inspired by jmc@OpenBSD.

misc fixes and improvements:
-call setlocale(LC_CTYPE, "") before nl_langinfo(CODESET) if the
locale settings is (still) at "C" - otherwise the CODESET doesn't work
-fix the type of the WACS_* symbols -- this needs to be cchar_t*
-add safeguards where the return value of wcwidth() is used for
loop counters or indexing -- it can be -1
-use more common code in the widechar support case -- in particular
let the wchar functions do the work even if chtype ones were called
-implement wcursyncup/wsyncup/wsyncdown
-somewhat experimental: allow ACS_* variables to refer to WACS_*
table entries -- this way, programs using the old chtype using API
can use UTF8 line drawing on terminals which support UTF8 but not
ACS switching
-fix some logics bugs in UTF8 recognition and ALTCHARSET handling

Fix some compiler warnings.
Remove shadowed variable declarations when DEBUG is defined.

Merge in wide curses code done as a Summer of Code project by
Ruibiao Qiu.

branches: 1.1.2;
Wide curses merge

Sprinkle about some cycle wasting checks for the win pointer being
null. Unfortunately, ncurses does this and there is some sloppy code
out there that relies on the check resulting in segfaults in
NetBSD curses which then, of course, gets blamed for the error.

branches: 1.9.4;
Fixes for lib/56926 amongst other things:
- plod now correctly accounts for wide characters when plodding
- use erase line when in color mode if the terminal has the capability
- ensure that the CA_CONTINUATION flag is applied consistently to the
subsequent characters in a wide character.
- fix a bunch of refresh bugs that caused inconsistent placement of
wide characters.

Don't waste time setting the dirty flag multiple times.

Style fixes most for __CTRACE().

Expand __CTRACE() to __nothing #ifndef DEBUG.

Remove most of #ifdef DEBUG around __CTRACE() calls.

No binary changes, except for line numbers for assert().

Add more debug to mvchgat.

branches: 1.4.6; 1.4.12;
Prepare curses for the possibility of changing from termcap to terminfo.
term.h #defines lines, pad_char and no_color_video macros which conflict
with existing curses code. We change lines to alines and nlines depending
on use, pad_char to padchar and no_color_video becomes no_color_attributes
but with a strong alias from no_color_video.

Ensure that y,x are valid coordinates before using them.

Be strict on xcurses support:
- Do not perform wrapping at all by setting the line flags.
- Do not alter the cursor position, even for mv(w)chgat.

Add support for the chgat(3) family. It is a useful extension from
ncurses, supporting it dramatically reduces the need for ncurses in
pkgsrc.

Sprinkle about some cycle wasting checks for the win pointer being
null. Unfortunately, ncurses does this and there is some sloppy code
out there that relies on the check resulting in segfaults in
NetBSD curses which then, of course, gets blamed for the error.

branches: 1.13.110;
Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

* Major change to add support for the newterm/set_term functions.
* Added fix to getch.c suggested by Gabriel Rosenkoetter (thanks :-)

Added functions to replace what were previously macros in curses.h
(this is a requirement of SUSv2) - the old macro behaviour can be
restored by defining _CURSES_USE_MACROS.
Changed function prototypes to use ANSI style.
All externally visible functions now have ANSI style declarations.

Made data structures opaque

Upgrades the standard NetBSD curses library to provide some
of the SYSV curses facilities. The added features are the collapsing
of arrow and function keysequences (as defined by termcap for the
terminal) into symbolic code returns thus relieving the application of
recognising multi-character key sequences. Other features are the
capability to perform a timed wait for a key (good for when you are
not sure if there is a keypress ready or not) and the capability for
turning off the inter-key timeout when assembling multi-character
function keys.

this work was done by Julian Coleman <J.D.Coleman@newcastle.ac.uk>
and blymn@baea.com.au (Brett Lymn). i'm just integrating it. thanks
HEAPS guys!

remove obsolete register declarations

RCSid police, fix warnings

branches: 1.6.2;
clean up import

repeat after me: "I hate rcs ids"

update to new version from berkeley. doesn't compile yet, nor
does it have rcsid's. this is for diffs.

New version from uunet.

Add RCS identifiers.

branches: 1.1.1;
Initial revision

Sprinkle about some cycle wasting checks for the win pointer being
null. Unfortunately, ncurses does this and there is some sloppy code
out there that relies on the check resulting in segfaults in
NetBSD curses which then, of course, gets blamed for the error.

branches: 1.5.74;
Remove clause 3 and 4 from TNF licenses

branches: 1.4.38;
* Added rcs id line to files missing it.
* Added code to __restartwin to restore meta and cursor visibility states
* Added code to __stopwin to disable meta.
* Added the *line group of functions for drawing character lines.

Added functions to replace what were previously macros in curses.h
(this is a requirement of SUSv2) - the old macro behaviour can be
restored by defining _CURSES_USE_MACROS.
Changed function prototypes to use ANSI style.
All externally visible functions now have ANSI style declarations.

Made data structures opaque

branches: 1.1.2;
file clearok.c was initially added on branch curses-v3.

Sprinkle about some cycle wasting checks for the win pointer being
null. Unfortunately, ncurses does this and there is some sloppy code
out there that relies on the check resulting in segfaults in
NetBSD curses which then, of course, gets blamed for the error.

branches: 1.31.4;
Fixes for lib/56926 amongst other things:
- plod now correctly accounts for wide characters when plodding
- use erase line when in color mode if the terminal has the capability
- ensure that the CA_CONTINUATION flag is applied consistently to the
subsequent characters in a wide character.
- fix a bunch of refresh bugs that caused inconsistent placement of
wide characters.

* Don't redraw the background if the new background character is the
same as the old one. This prevents excessive redraws in some
applications.

* Fix bug introduced when wbkgrndset was fixed, we cannot blindly
replace any instance of the old background character with the new one
because some of those characters were put there by the application
leading to display corruption. So flag characters as background when
they are erased and only update the flagged characters when setting
the background.

Make the default colour pair be pair 0 which appears to match other
curses implementations.

Correct (hopefully) the handling of wide characters.

* Remove the WCOL family of macros, these were "stealing" the upper bits
of a character attribute to store the column width of a character. No
warning was given about this in curses.h which meant it was easy to
accidentally reuse the bits in use by the WCOL macros (we already did).
Add couple of 16bit ints to the character structure iff HAVE_WCHAR is
true to hold the display width and wide char related flags (just
continuation at the moment)
* Convert all instances of WCOL macros to just reference the column width
in the char structure so it is not obfuscated.
* Fix cursor positioning so placing a cursor in the middle of a wide char
actually does just that.
* Fix plod so it understands that if the cursor is going to be positioned
in the middle of a wide char it cannot just reprint the char to get there.
* Fix plodput so it correctly counts the number of output characters for
wide characters.
* Fix slk routines to properly size the wctomb() buffer.

werase, wclrtobot, wclrtoeol - make code even more similar.
Rename attr to battr to match bch and WINDOW::battr.
No functional change intended.

curses: wrap the erase logic in a macro

Easier to use, it's in one place and now hopefully everyone is happy.

X

curses: normalise erase logic with clrtoeol and clrtobot

Define WA_ATTRIBUTES as 0 for the non wide case just to make our code
easier to write.

branches: 1.24.14;
KNF.
Normalise coding style.
White space police.
Sprinkle some extra braces to make the flow more clear.

No functional changes.

Implement POSIX Curses functions immedok(3) and syncok(3).

branches: 1.22.14;
PR/46049: Tim van der Molen:
clrtobot() and clrtoeol() do not set background attributes

branches: 1.21.6; 1.21.8;
Prepare curses for the possibility of changing from termcap to terminfo.
term.h #defines lines, pad_char and no_color_video macros which conflict
with existing curses code. We change lines to alines and nlines depending
on use, pad_char to padchar and no_color_video becomes no_color_attributes
but with a strong alias from no_color_video.

Fix some compiler warnings.
Remove shadowed variable declarations when DEBUG is defined.

Merge in wide curses code done as a Summer of Code project by
Ruibiao Qiu.

branches: 1.18.6;
Handle both background character and background attribute.

Use the window background colour, not the default colour.
Should fix PR install/32617

Background characters and attributes don't need to be kept per character
cell, as they are merged when characters are added. Remove the per cell
storage and clarify the manual page. Pointed out by ruibiao@.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

GC __FORCEPAINT.

Set background character and attributes for added characters.

Added functions to replace what were previously macros in curses.h
(this is a requirement of SUSv2) - the old macro behaviour can be
restored by defining _CURSES_USE_MACROS.
Changed function prototypes to use ANSI style.
All externally visible functions now have ANSI style declarations.

Made data structures opaque

branches: 1.10.6;
Upgrades the standard NetBSD curses library to provide some
of the SYSV curses facilities. The added features are the collapsing
of arrow and function keysequences (as defined by termcap for the
terminal) into symbolic code returns thus relieving the application of
recognising multi-character key sequences. Other features are the
capability to perform a timed wait for a key (good for when you are
not sure if there is a keypress ready or not) and the capability for
turning off the inter-key timeout when assembling multi-character
function keys.

this work was done by Julian Coleman <J.D.Coleman@newcastle.ac.uk>
and blymn@baea.com.au (Brett Lymn). i'm just integrating it. thanks
HEAPS guys!

remove obsolete register declarations

RCSid police, fix warnings

branches: 1.7.2;
clean up import

repeat after me: "I hate rcs ids"

update to new version from berkeley. doesn't compile yet, nor
does it have rcsid's. this is for diffs.

New version from uunet.

Add RCS identifiers.

added Andrew Chernov's patch set:
Standard curses library use eight bit for standout mode, so
8-bit characters displays like highlighted 7-bit characters.

This patch produce library which is fully compatible with all curses
programs and add 8-bit chars to all input/display functions.
---
I don't think, that any programs wish to use internal curses
attribute _STANDOUT directly, in expressions like:
addch( ch | _STANDOUT );
Normal interface use standout() and standend() functions instead.
Many programs use 'char' type (with sign extention) for input characters
and sign extention becomes _STANDOUT mode in this case.
So, I refuse this future and allow 8-bit characters for programs,
which is designed for 7-bit only ('char' type using instead of
'unsigned char').
---
This small patch fix unpleasant standard curses bug:
curses can't expand TAB at all (but tries).
A man who wrote this curses misplace SYNC_IN and SYNCH_OUT,
this patch exchange macro calls.

This patch useful for standard 7-bit curses too, for this
you must delete '_' symbol before waddbytes and apply patch.
---
Oh, NO! This curses are really buggy!

This small patch fix following problem:
[ assumed scrollok(stdscr, TRUE) ]
when addch(ch) at lower right corner of screen, curses are realy
gone mad instead if simple scrolling... Curses code assumed that
this will be done correctly, but implement it with two bugs.

branches: 1.1.1;
Initial revision

Sprinkle about some cycle wasting checks for the win pointer being
null. Unfortunately, ncurses does this and there is some sloppy code
out there that relies on the check resulting in segfaults in
NetBSD curses which then, of course, gets blamed for the error.

branches: 1.35.4;
Make clrtoeol match the ncurses behaviour where it seems to make the
rest of line foreground. This fixes a display oddity in mutt.

Make the default colour pair be pair 0 which appears to match other
curses implementations.

Correct (hopefully) the handling of wide characters.

* Remove the WCOL family of macros, these were "stealing" the upper bits
of a character attribute to store the column width of a character. No
warning was given about this in curses.h which meant it was easy to
accidentally reuse the bits in use by the WCOL macros (we already did).
Add couple of 16bit ints to the character structure iff HAVE_WCHAR is
true to hold the display width and wide char related flags (just
continuation at the moment)
* Convert all instances of WCOL macros to just reference the column width
in the char structure so it is not obfuscated.
* Fix cursor positioning so placing a cursor in the middle of a wide char
actually does just that.
* Fix plod so it understands that if the cursor is going to be positioned
in the middle of a wide char it cannot just reprint the char to get there.
* Fix plodput so it correctly counts the number of output characters for
wide characters.
* Fix slk routines to properly size the wctomb() buffer.

Expand __CTRACE() to __nothing #ifndef DEBUG.

Remove most of #ifdef DEBUG around __CTRACE() calls.

No binary changes, except for line numbers for assert().

werase, wclrtobot, wclrtoeol - make code even more similar.
Rename attr to battr to match bch and WINDOW::battr.
No functional change intended.

curses: wrap the erase logic in a macro

Easier to use, it's in one place and now hopefully everyone is happy.

X

curses: normalise erase logic with clrtoeol and clrtobot

Define WA_ATTRIBUTES as 0 for the non wide case just to make our code
easier to write.

branches: 1.28.14;
KNF.
Normalise coding style.
White space police.
Sprinkle some extra braces to make the flow more clear.

No functional changes.

Implement POSIX Curses functions immedok(3) and syncok(3).

branches: 1.26.14;
PR/46049: Tim van der Molen:
clrtobot() and clrtoeol() do not set background attributes

branches: 1.25.6; 1.25.8;
Prepare curses for the possibility of changing from termcap to terminfo.
term.h #defines lines, pad_char and no_color_video macros which conflict
with existing curses code. We change lines to alines and nlines depending
on use, pad_char to padchar and no_color_video becomes no_color_attributes
but with a strong alias from no_color_video.

Fix some compiler warnings.
Remove shadowed variable declarations when DEBUG is defined.

Merge in wide curses code done as a Summer of Code project by
Ruibiao Qiu.

Add debug "areas" that allow selective debugging by setting the
"CURSES_TRACE_MASK" environment variable. Postive vales include
debug areas, negative values exclude them.

branches: 1.21.6;
Handle both background character and background attribute.

Use the window background colour, not the default colour.
Should fix PR install/32617

Background characters and attributes don't need to be kept per character
cell, as they are merged when characters are added. Remove the per cell
storage and clarify the manual page. Pointed out by ruibiao@.

Fix __CTRACE arguments.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

Make sure we always update curx, cury and __ISPASTEOL.
From Onno van der Linden in PR lib/16532.

branches: 1.15.2;
Remove extraneous tabs from blank lines.

GC __FORCEPAINT.

Set background character and attributes for added characters.

Added functions to replace what were previously macros in curses.h
(this is a requirement of SUSv2) - the old macro behaviour can be
restored by defining _CURSES_USE_MACROS.
Changed function prototypes to use ANSI style.
All externally visible functions now have ANSI style declarations.

Made data structures opaque

Upgrades the standard NetBSD curses library to provide some
of the SYSV curses facilities. The added features are the collapsing
of arrow and function keysequences (as defined by termcap for the
terminal) into symbolic code returns thus relieving the application of
recognising multi-character key sequences. Other features are the
capability to perform a timed wait for a key (good for when you are
not sure if there is a keypress ready or not) and the capability for
turning off the inter-key timeout when assembling multi-character
function keys.

this work was done by Julian Coleman <J.D.Coleman@newcastle.ac.uk>
and blymn@baea.com.au (Brett Lymn). i'm just integrating it. thanks
HEAPS guys!

remove obsolete register declarations

RCSid police, fix warnings

branches: 1.7.2;
clean up import

repeat after me: "I hate rcs ids"

update to new version from berkeley. doesn't compile yet, nor
does it have rcsid's. this is for diffs.

New version from uunet.

Add RCS identifiers.

added Andrew Chernov's patch set:
Standard curses library use eight bit for standout mode, so
8-bit characters displays like highlighted 7-bit characters.

This patch produce library which is fully compatible with all curses
programs and add 8-bit chars to all input/display functions.
---
I don't think, that any programs wish to use internal curses
attribute _STANDOUT directly, in expressions like:
addch( ch | _STANDOUT );
Normal interface use standout() and standend() functions instead.
Many programs use 'char' type (with sign extention) for input characters
and sign extention becomes _STANDOUT mode in this case.
So, I refuse this future and allow 8-bit characters for programs,
which is designed for 7-bit only ('char' type using instead of
'unsigned char').
---
This small patch fix unpleasant standard curses bug:
curses can't expand TAB at all (but tries).
A man who wrote this curses misplace SYNC_IN and SYNCH_OUT,
this patch exchange macro calls.

This patch useful for standard 7-bit curses too, for this
you must delete '_' symbol before waddbytes and apply patch.
---
Oh, NO! This curses are really buggy!

This small patch fix following problem:
[ assumed scrollok(stdscr, TRUE) ]
when addch(ch) at lower right corner of screen, curses are realy
gone mad instead if simple scrolling... Curses code assumed that
this will be done correctly, but implement it with two bugs.

branches: 1.1.1;
Initial revision

PR lib/58282

This is a partial fix for the issues raised. This change will
reduce the output by preventing the foreground and background
colours being set on each cell. The current colour pair applied
is tracked and requests to set the colour to the same pair is now
a no-op.

branches: 1.47.4;
Fixes for lib/56926 amongst other things:
- plod now correctly accounts for wide characters when plodding
- use erase line when in color mode if the terminal has the capability
- ensure that the CA_CONTINUATION flag is applied consistently to the
subsequent characters in a wide character.
- fix a bunch of refresh bugs that caused inconsistent placement of
wide characters.

Make the default colour pair be pair 0 which appears to match other
curses implementations.

curses: spell "foreground" correctly in comments

Style fixes most for __CTRACE().

Expand __CTRACE() to __nothing #ifndef DEBUG.

Remove most of #ifdef DEBUG around __CTRACE() calls.

No binary changes, except for line numbers for assert().

Fix old-style definition: use_default_colors() --> use_default_colors(void)

KNF.
Normalise coding style.
White space police.
Sprinkle some extra braces to make the flow more clear.

No functional changes.

u_int -> unsigned int, u_int32_t -> uint32_t.

Now that we have the initialize_color capability,
init_color can be made to work.

From: rofl0r <retnyg@gmx.net>

branches: 1.38.24;
Use tiparm instead of vtparm.

Back out change for assume_default_colors as it was not correct.

Ignore request to change the values of colour pair 0
Explicitly set foreground and/or background colours when -1 is passed
to assume_default_colors()

Userland now builds and uses terminfo instead of termcap.

OK: core@, jdc@

Prepare curses for the possibility of changing from termcap to terminfo.
term.h #defines lines, pad_char and no_color_video macros which conflict
with existing curses code. We change lines to alines and nlines depending
on use, pad_char to padchar and no_color_video becomes no_color_attributes
but with a strong alias from no_color_video.

Remove clause 3 and 4 from TNF licenses

branches: 1.32.10;
Add debug "areas" that allow selective debugging by setting the
"CURSES_TRACE_MASK" environment variable. Postive vales include
debug areas, negative values exclude them.

branches: 1.31.4;
Make sure we update the correct window when changing colour pairs.

branches: 1.30.2;
Background characters and attributes don't need to be kept per character
cell, as they are merged when characters are added. Remove the per cell
storage and clarify the manual page. Pointed out by ruibiao@.