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
N

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.

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Fixes PR lib/58823

Implement the ncurses extension wgetscrreg which returns the
scrolling region of the given window. Also implement getscrreg to
get the scrolling region of stdscr which appears to

Fixes PR lib/58823

Implement the ncurses extension wgetscrreg which returns the
scrolling region of the given window. Also implement getscrreg to
get the scrolling region of stdscr which appears to be missing from
ncurses but does follow the convention of having a non w prefixed
function that applies to stdscr.

Due to the addtion of a new function a minor library version bump has
been done.

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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

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.

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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 cu

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.

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Remove checks for cursor being in scrolling region, ncurses doesn't
do checking, rather just scrolls the scrolling region so we shall
follow suit. SUSv2 says what is happens when scrl is called with

Remove checks for cursor being in scrolling region, ncurses doesn't
do checking, rather just scrolls the scrolling region so we shall
follow suit. SUSv2 says what is happens when scrl is called with the
cursor outside the scrolling is undefined so we should match ncurses.
This fixes PR#51819 without forcing tin to use terminfo directly.

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

No functional changes.

Userland now builds and uses terminfo instead of termcap.

OK: core@, jdc@

fix debugging build. Hi Roy!

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

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.

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

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

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

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 scrolling region top correctly.
Fixes scrolling bug in sub-windows.

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 vari

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).

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use __cputchar(), not putchar().
otherwise, __CTRACE() will not be useful for debugging curses internals.

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 prototyp

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.

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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
ter

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!

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remove obsolete register declarations

RCSid police, fix warnings

clean up import

changes from branch

repeat after me: "I hate rcs ids"