CVS log for src/lib/libcurses/ins_wstr.c

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Default branch: MAIN

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.

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.

Move 'i' into DEBUG only code (now there be three).
Hopefully unbreaks !DEBUG builds.

Fix handling of the tab special character.

Fix for PR lib/55433

Correct the behaviour for ins_wstr:
* Properly check the string will fit by processing any special
  characters present when preforming the check.
* Simplify the routine by removing code that duplicates the code in
  _cursesi_addwchar and just call _cursesi_addwchar.

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().

Pull up following revision(s) (requested by uwe in ticket #1567):

	lib/libcurses/insch.c: revision 1.26
	lib/libcurses/ins_wch.c: revision 1.15
	lib/libcurses/ins_wstr.c: revision 1.15
	lib/libcurses/insstr.c: revision 1.8

mvwins*(WINDOW *win, ...) functions - call wins* on win, not stdscr.
From Naman Jain in PR lib/55460.

Pull up following revision(s) (requested by uwe in ticket #986):

	lib/libcurses/insch.c: revision 1.26
	lib/libcurses/ins_wch.c: revision 1.15
	lib/libcurses/ins_wstr.c: revision 1.15
	lib/libcurses/insstr.c: revision 1.8

mvwins*(WINDOW *win, ...) functions - call wins* on win, not stdscr.
From Naman Jain in PR lib/55460.

mvwins*(WINDOW *win, ...) functions - call wins* on win, not stdscr.
From Naman Jain in PR lib/55460.

Sync with HEAD

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.

Sync with HEAD, resolve a couple of conflicts

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@

Sync with HEAD

Sync with HEAD

Move ESCDELAY to curses.c so all globals are close to each other.
Remove _reentrant and use ESCDELAY and TABSIZE as we're not really
reentrant.

If either set_escdelay(3) or set_tabsize(3) are called, set _reentrant
to ensure we use the saved value for the sceen.

This effectively makes ESCDELAY and TABSIZE read-only when either
of these functions are called.

Sync with HEAD.  (Note that most of these changes are simply $NetBSD$
tag issues.)

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

Sync with HEAD

remove bogus malloc casts

Rebase to HEAD as of a few days ago.

sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs.  ("Protocol error: too many arguments")

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

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

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.

Apply the changes that add debug "areas" on HEAD to the wcurses branch.
Add correspending changes to the debug code that is only present on the branch.

Merge wide curses.

Wide curses merge