ncurses 6.2 - patch 20210227

[ncurses.git] / NEWS

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-- $Id: NEWS,v 1.3636 2021/02/28 01:10:59 tom Exp $
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This is a log of changes that ncurses has gone through since Zeyd started
working with Pavel Curtis' original work, pcurses, in 1992.

Changes through 1.9.9e are recorded by Zeyd M Ben-Halim.
Changes since 1.9.9e are recorded by Thomas E Dickey.

Contributors include those who have provided patches (even small ones), as well
as those who provide useful information (bug reports, analyses).  Changes with
no cited author are the work of Thomas E Dickey (TD).

A few contributors may be cited in this file by their initials.
Each accounts for half of one percent or more of the changes since 1.9.9e.
See the AUTHORS file for the corresponding full names.

Changes through 1.9.9e did not credit all contributions;
it is not possible to add this information.

20210227
        + modify tic/infocmp to eliminate unnecessary "\" to escape ":" in
          terminfo format.
        + add check in tic for duplicate "use=" clauses.

20210220
        + improve tic warning when oc/op do not mention SGR 39/49 for xterm
          compatible XT flag.
        + revert change to lib_addch.c in waddch_literal() from 20210130, since
          the followup fix in PutCharLR() actually corrects the problem while
          this change causes too-early filling/wrapping (report by Johannes
          Altmanninger).
        + add/use vt220+pcedit and vt220+vtedit  -TD
        + add scrt/securecrt and absolute -TD
        + add nel to xterm-new, though supported since X11R5 -TD
        + add/use xterm+nofkeys -TD
        + move use of ecma+italics from xterm-basic to xterm+nofkeys -TD

20210213
        + add test/back_ground.c, to exercise the wide-character background
          functions.
        + add a check in _nc_build_wch() in case the background character is a
          wide-character, rather than a new part of a multibyte character.
        + improve tracemunch's coverage of form/menu/panel libraries.
        + improve tracemunch's checking/reporting the type for the first
          parameter, e.g., "WINDOW*" rather than "#1".

20210206
        + provide for wide-characters as background character in wbkgrnd
          (report/testcase by Anton Vidovic)
        + add name for Fedora's pcre2 to configure check for "--with-pcre2"
          option, from xterm #363 -TD
        + modify adjustment in PutCharLR to restore the cursor position before
          writing to the lower-right corner, rather than decrementing the
          cursor column, in case it was a double-width character (cf: 20210130).

20210130
        + correct an off-by-one in comparison in waddch_literal() which caused
          scrolling when a double-cell character would not fit at the lower
          right corner of the screen (report by Benno Schulenberg).
        + split-out att610+cvis, vt220+cvis, vt220+cvis8 -TD
        + add vt220-base, for terminal emulators which generally have not
          supported att610's blinking cursor control -TD
        + use vt220+cvis in vt220, etc -TD
        + use att610+cvis, xterm+tmux and ansi+enq in kitty -TD
        + use vt220+cvis in st, terminology, termite since they ignore
          blinking-cursor detail in att610+cvis -TD

20210123
        + modify package/config scripts to provide an explicit -L option for
          cases when the loader search path has other directories preceding
          the one in which ncurses is installed (report by Yuri Victorovich).
        + minor build-fixes in configure script and makefiles to work around
          quirks of pmake.

20210116
        + add comment for linux2.6 regarding CONFIG_CONSOLE_TRANSLATIONS
          (report by Patrick McDermott) -TD
        + make opts extension for getcchar work as documented for ncurses 6.1,
          adding "-g" flag to test/demo_new_pair to illustrate.

20210109
        + fix errata in man/ncurses.3x from recent updates.
        + improve quoting/escaping in configure script, uses some features of
          autoconf 2.52.20210105

20210102
        + update man/curs_memleaks.3x, to include <term.h> which declares
          exit_terminfo.
        + clarify man/curs_terminfo.3x, to mention why the macro setterm is
          defined in <curses.h>, and remove it from the list of prototypes
          (prompted by patch by Graeme McCutcheon).
        + amend man/curs_terminfo.3x, to note that <curses.h> is required
          for certain functions, e.g., those using chtype or attr_t for
          types, as well as mvcur (cf: 20201031).
        + use parameter-names in prototypes in curs_sp_funcs.3x, for
          consistency with other manpages.

20201227
        + update terminology entry to 1.8.1 -TD
        + fix some compiler-warnings which gcc8 reports incorrectly.

20201219
        + suppress hyphenation in generated html for manpages, to address
          regression in upgrade of groff 1.22.2 to 1.22.3.
        + fix inconsistent sort-order in see-also sections of manpages (report
          by Chris Bennett).

20201212
        + improve manual pages for form field-types.

20201205
        + amend build-fixes for gnat 10 to work with certain systems lacking
          gprbuild (cf: 20200627).
        + eliminate an additional strlen and wsclen.
        + eliminate an unnecessary strlen in waddnstr() (suggested by Benjamin
          Abendroth).
        + modify inopts manpage, separating the items for nodelay and notimeout
          (patch by Benno Schulenberg).
        + correct mlterm3 kf1-kf4 (Debian #975322) -TD
        + add flash to mlterm3 -TD

20201128
        + add Smulx to alacritty (Christian Duerr).
        + add rep to PuTTY -TD
        + add putty+keypad -TD
        + add another fflush(stdout) in _nc_flush() to handle time-delays in
          the middle of strings such as flash when the application uses
          low-level calls rather than curses (cf: 20161217).
        + modify configure check for c89/c99 aliases of clang to use its
          -std option instead, because some platforms, in particular macOS,
          do not provide workable c89/c99 aliases.

20201121
        + fix some compiler-warnings in experimental Windows-10 driver.
        + add the definitions needed in recent configure-check for clang
          (report by Steven Pitman).

20201114
        + fix some compiler-warnings in experimental Windows-10 driver.
        + modify a check for parameters in terminfo capabilities to handle the
          special case where short extended capability strings were not
          converted from terminfo to termcap format.
        + modify CF_MIXEDCASE_FILENAMES macro, adding darwin as special case
          when cross-compiling (report by Eli Rykoff).

20201107
        + update kitty+common -TD
        + add putty+screen and putty-screen (suggested by Alexandre Montaron).
        + explain in ncurses.3x that functions in the tinfo library do not rely
          upon wide-characters (prompted by discussion with Reuben Thomas).

20201031
        + modify MKterm.h.in so that it is not necessary to include <curses.h>
          before <term.h> (prompted by discussion with Reuben Thomas).
        + review/improve synopsis for curs_sp_funcs.3x (prompted by discussion
          with Reuben Thomas).
        + improve format of output in tic's check_infotocap() function, to
          ensure that the messages contain only printable text.
        + modify configure-check for clang to verify that -Qunused-arguments
          is supported.  IBM's xlclang does not support it (report by Steven
          Pitman).

20201024
        + provide workaround configure-check for bool when cross-compiling.
        + fix a potential indexing error in _nc_parse_entry(), seen with
          Herlim's test data using address-sanitizer.
        + change a null-pointer check in set_curterm to a valid-string check,
          needed in to tic's use-resolution when pad_char is cancelled
          (report/testcase by Robert Sebastian Herlim)
        + improve tic's -c option to validate the number and type of parameters
          and compare against expected number/type before deciding which set of
          parameter-lists to use in tparm calls (report/testcase by Robert
          Sebastian Herlim).
        + fix a link for tabs.1 manpage in announce.html.in (report by Nick
          Black), as well as some fixes via linklint.

20201017
        + improve manpage typography.
        + improve discussion in curs_addch.3x of the use of unctrl to display
          nonprintable characters.
        + add a note in terminfo.5 explaining that no-parameter strings such
          as sgr0 or cnorm should not be used with tparm.

20201010
        + correct sgr in aaa+rv (report by Florian Weimer) -TD
        + fix some sgr inconsistencies in d230c, ibm6153, ibm6154,
          ncrvt100an -TD
        + improve tic's check for errors detected in tparm (prompted by
          discussion with Florian Weimer).
        + set output-mode to binary in experimental Windows-10 driver (Juergen
          Pfeifer).

20201003
        + remove output-related checks for nl/nonl (report by Leon Winter).
        + change tmux's kbs to ^? (report by Premysl Eric Janouch)
        + simplify mlterm initialization with DECSTR -TD
        + fix a typo in man/curs_terminfo.3 (Reuben Thomas).
        + add tmux-direct (tmux #2370, Debian #895754)
        + add user-defined capabilities from mintty to Caps-ncurses, for
          checking consistency with tic.

20200926
        + correct configure-check for gnurx library.
        + regenerate llib-* files.
        + modify tracemunch and the panel library to show readable traces for
          panel- and user-pointers.

20200919
        + update mlterm3 for 3.9.0 (report by Premysl Eric Janouch) -TD

20200918
        + corrected condition for appending curses.events to the generated
          curses.h (report by Sven Joachim, Debian #970545).

20200912
        + add configure-check for systre/tre with mingw configuration, to get
          the library-dependencies as seen in msys2 configuration for mingw64.
        + build-fixes for the win32-driver configuration.
        + use more defensive binary mode setting for Win32 (Juergen Pfeifer).

20200907
        + fix regression in setupterm validating non-empty $TERM (report by
          Soren Tempel).

20200906
        + merge/adapt in-progress work by Juergen Pfeifer for new version of
          win32-driver.
        + correct description of vt330/vt340 (Ross Combs).

20200831
        + build-fix for awk-scripts modified for win32-driver (report by Werner
          Fink).

20200829
        + remove a redundant NCURSES_EXPORT as a build-fix for "Maarten
          Anonymous".
        + merge/adapt in-progress work by Juergen Pfeifer for new version of
          win32-driver.
        + modify configure script, moving gcc -Werror options to EXTRA_CFLAGS
          to avoid breaking configure-checks (adapted from ongoing work on
          mawk and lynx).
        > errata for terminfo.src (report by Florian Weimer):
        + correct icl6404 csr
        + correct ti916 cup
        + improve ndr9500

20200822
        + improve version-number extraction in MKlib_gen.sh
        + make the test-package for manpages installable by adjusting the
          man_db.renames file.
        + correct an off-by-one loop-limit in convert_strings function
          (report by Yue Tai).
        + add CF_SHARED_OPTS cases for HPE NonStop systems (Randall S Becker).
        + modify CF_SHARED_OPTS case for NetBSD to use the same "-shared"
          option for the non-rpath case as for the rpath case, to allow gcc to
          provide suitable runtime initialization (report by Rajeev V Pillai).

20200817
        + reduce build-warnings by excluding ncurses-internals from deprecation
          warnings.
        + mark wgetch-events feature as deprecated.
        + add definition for $(LIBS) to ncurses/Makefile.in, to simplify builds
          using the string-hacks option.
        + prevent KEY_EVENT from appearing in curses.h unless the configure
          option --enable-wgetch-events is used (report by Werner Fink).

20200816
        + amend tic/infocmp check to allow for the respective tool's absence
          (report by Steve Wills, cf: 20200808).
        + improved some of the build-scripts with shellcheck
        + filter out -MT/-MD/-MTd/-MDd options in script for Visual Studio C++
          (discussion with "Maarten Anonymous").

20200808
        + improve discussion of the system's tic utility when used as part
          of cross-compiling (discussion with Keith Marshall).
        + modify configuration checks for build-time tic/infocmp to use
          AC_CHECK_TOOL. That can still be overridden by --with-tic-path and
          --with-infocmp-path when fallbacks are used, but even if not using
          fallbacks, the improved check may help with cross-compiling
          (discussion with Keith Marshall).
        + other build-fixes for Ada95 with MinGW.
        + modify Ada95 source-generation utility to write to a file given as
          parameter rather than to the standard output, allowing builds with
          MinGW.

20200801
        + remove remaining parts of checks for ISC Unix (cf: 20121006).
        + add user32.lib to LDFLAGS for Visual Studio C++ configuration
          (discussion with "Maarten Anonymous").
        + modify MKkey_defs.sh to hide ncurses' definition of KEY_EVENTS to
          reduce Visual Studio C++ redefinition warnings.
        + improve/update checks for external functions in test/configure

20200725
        + set LINK_TESTS in CF_SHARED_OPTS for msvc (patch by
          "Maarten Anonymous")
        + improved workaround for redefinition-warnings for KEY_EVENT.
        + improve man/term.5 section on legacy storage format (report by
          Florian Weimer).

20200718
        + reduce redefinition-warnings for KEY_EVENT when building with Visual
          Studio C++.
        + define NCURSES_STATIC when compiling programs to link with static
          libraries, to work with MinGW vs Visual Studio C++.
        > additional changes for building with Visual Studio C++ and msys2
          (reports/patches by "Maarten Anonymous")
        + modify c++/Makefile.in to set the current directory while compiling
          the main program, so the linker can find related objects.
        + several changes to allow the c++/demo program to compile/link.
        + change an ifdef in test-directory, to use VC++ wide-character funcs.

20200711
        + fix pound-sign mapping in acsc of linux2.6 entry (report by Ingo
          Bruckl).
        + additional changes for building with Visual Studio C++ and msys2
          (reports/patches by "Maarten Anonymous")
        + build-improvements for Windows 10 and MinGW (patch by Juergen
          Pfeifer).
        + fix a typo in curs_printw.3x (patch by William Pursell).
        + fix two errors in infotocap which allowed indexing outside the
          buffer (report/testcases by Zhang Gan).
        + update length of strings in infocmp's usage function to restore a
          trailing null on the longest string (report/testcase by Zhang Gen).

20200704
        + modify version-check with Ada generics to use the same pattern as in
          the check for supported gnat versions (report by Pascal Pignard).
        > additional changes for building with Visual Studio C++ and msys2
          (patches by "Maarten Anonymous"):
        + adjust headers/declarations to provide for "dllimport" vs "dllexport"
          declarations when constructing DLLs, to worko with Visual Studio C++.

20200627
        + build-fixes for gnat 10.1.1, whose gnatmake drops integration with
          gprbuild.
        + correct buffer-length in test/color_name.h

20200613
        + update list of functions in ncurses.3x
        + move dlclose() call from lib_mouse.c to delscreen() to avoid a case
          in the former which could be called from SIGTSTP handler (Debian
          #961097).

20200606
        + add xterm+256color2, xterm+88color2, to deprecate nonstandard usage
          in xterm+256color, xterm+88color -TD
        + add shifted Linux console keys in linux+sfkeys entry for
          screen.linux (report by Alexandre Montaron).
        + use vt100+enq in screen (report by Alexandre Montaron).
        + add screen.linux-s alias (suggested by Alexandre Montaron).

20200531
        + correct configure version-check/warnng for g++ to allow for 10.x
        + re-enable "bel" in konsole-base (report by Nia Huang)
        + add linux-s entry (patch by Alexandre Montaron).
        + drop long-obsolete convert_configure.pl
        + add test/test_parm.c, for checking tparm changes.
        + improve parameter-checking for tparm, adding function _nc_tiparm() to
          handle the most-used case, which accepts only numeric parameters
          (report/testcase by "puppet-meteor").
        + use a more conservative estimate of the buffer-size in lib_tparm.c's
          save_text() and save_number(), in case the sprintf() function
          passes-through unexpected characters from a format specifier
          (report/testcase by "puppet-meteor").
        + add a check for end-of-string in cvtchar to handle a malformed
          string in infotocap (report/testcase by "puppet-meteor").

20200523
        + update version-check for gnat to allow for gnat 10.x to 99.x
        + fix an uninitialized variable in lib_mouse.c changes (cf: 20200502)
        + add a check in EmitRange to guard against repeat_char emitting digits
          which could be interpreted as BSD-style padding when --enable-bsdpad
          is configured (report/patch by Hiltjo Posthuma).
        + add --disable-pkg-ldflags to suppress EXTRA_LDFLAGS from the
          generated pkg-config and ncurses*-config files, to simplify
          configuring in the case where rpath is used but the packager wants
          to hide the feature (report by Michael Stapelberg).
        > fixes for building with Visual Studio C++ and msys2 (patches by
          "Maarten Anonymous"):
        + modify CF_SHARED_OPTS to generate a script which translates linker
          options into Visual Studio's dialect.
        + omit parentheses around function-names in generated lib_gen.c to
          work around a Visual Studio C++ limitation.

20200516
        + add notes on termcap.h header in curs_termcap.3x
        + update notes on vscode / xterm.js -TD

20200509
        + add "-r" option to the dots test-programs, to help with scripting
          a performance comparison.
        + build-fix test/move_field.c for NetBSD curses, whose form headers
          use different names than SVr4 or ncurses.

20200502
        + add details on the change to Linux SGR 21 in 2018 -TD
        + add xterm-direct16 and xterm-direct256 -TD
        + modify lib_mouse.c to check for out-of-range button numbers, convert
          those to position reports.

20200425
        + use vt100+fnkeys in putty -TD
        + fix a typo in tput.1; "columns" should be "cols".

20200418
        + improve tracemunch logic for "RUN" compaction.
        + fix a special case in wresize() where copying the old text did not
          check if the last cell on a row was the beginning of a fullwidth
          character (adapted from patch by Benno Schulenberg).
        + use vt52+keypad in xterm-vt52, from xterm #354 -TD
        + improve see-also section of user_caps.5

20200411
        + fix find_pair(), overlooked when refactoring for _nc_reserve_pairs()
          (report/testcase by Brad Town, cf: 20170812).
        + add a trailing null for magic-string in putwin, flagged by gcc 10
        + update check for gcc version versus gnat to work with gcc 10.x

20200404
        + modify -fvisibility check to work with g++
        > fixes for building with Visual Studio C++ and msys2 (patches by
          "Maarten Anonymous"):
        + add configure option and check for gcc -fvisibility=hidden feature
        + define NCURSES_NOMACROS in lib_gen.c to work around Visual Studio
          C++ preprocessor limitations.
        + modify some of the configure-macros, as well as mk-1st.awk to work
          with Visual Studio C++ default filenaming.

20200328
        + correct length of buffer copied in dup_field().
        + remove "$(srcdir)/" from path of library.gpr, needed for out-of-tree
          builds of Ada95 (patch by Adam Van Ymeren).

20200321
        + improve configure-checks to reduce warnings about unused variables.
        + improve description of error-returns in waddch and waddnstr manual
          pages (prompted by patch by Benno Schulenberg).
        + add test/move_field.c to demonstrate move_field(), and a stub for
          a corresponding demo of dup_field().

20200314
        + add history note to curs_scanw.3x for <stdarg.h> and <varargs.h>
        + add history note to curs_printw.3x for <stdarg.h> and <varargs.h>
        + add portability note to ncurses.3x regarding <stdarg.h>

20200308
        + update copyright notices in test-packages.
        + modify tracemunch to guard against errors in its known_p1 table.
        + add several --with-xxx-libname options, to help with pkgsrc (prompted
          by discussion with Thomas Klausner).

20200301
        + modify wbkgd() and wbkgrnd() to avoid storing a null in the
          background character, because it may be used in cases where the
          corresponding 0x80 is not treated as a null (report by Marc Rechte,
          cf: 20181208).

20200229
        + modify CF_NCURSES_CONFIG to work around xcode's c99 "-W" option,
          which conflicts with conventional use for passing linker options.
        > fixes for building with Visual Studio C++ and msys2 (patches by
          "Maarten Anonymous"):
        + check for pcre2posix.h instead of pcre2-posix.h
        + add case in CF_SHARED_OPTS for msys2 + msvc
        + add fallback definition for STDIN_FILENO in progs.priv.h
        + modify win_driver.c to use _alloca() rather than gcc's variable
          length array feature.
        + add NCURSES_IMPEXP to ncurses wrapped-variable declarations
        + remove NCURSES_IMPEXP from class variables in c++/cursslk.h
        + remove fallback prototype for exit() from c++/etip.h.in
        + use configured check for <sys/time.h> in a couple of places
        + conditionally include winsock.h in ncurses/win32con/gettimeofday.c,
          because Visual Studio needs this for the timestruct declaration.
        + adjust syntax in a couple of files using the NCURSES_API symbol.

20200222
        + expanded note in ncurses.3x regarding automatically-included headers
        + improve vt50h and vt52 based on DECScope manual -TD
        + add/use vt52+keypad and vt52-basic -TD
        + check/workaround for line-too-long in Ada95 generate utility when
          building out-of-tree.
        + improve/update HEADER_DEPS in */Makefile.in
        + add "check" rule to include/Makefile, to demonstrate that the headers
          include all of the required headers for the types used.

20200215
        + improve manual page for panel library, extending the portability
          section as well as documenting error-returns.
        + show tic's version when installing terminal database in run_tic.sh
        + correct check for gcc vs other compilers used in ncurses 6.0, from
          FreeBSD patch by Kyle Evans (cf: 20150725).
        + add notes for 6.2 to INSTALL.

20200212 6.2 release for upload to ftp.gnu.org
        + update release notes
        + minor build-fixes, mostly to test-package scripts

20200208
        + modify check for sizeof(wchar_t) to ensure it gives useful result
          when cross-compiling.
        + drop assumption in configure script that Cygwin's linker is broken.
        + define NCURSES_BROKEN_LINKER if the broken-linker feature is used,
          to simplify configure-checks for ncurses-examples.

20200202
        + reassert copyright on ncurses, per discussion in ncurses FAQ:
          https://invisible-island.net/ncurses/ncurses.faq.html#relicensed

20200201
        + modify comparison in make_hash.c to correct a special case in
          collision handling for Caps-hpux11
        + add testing utility report_hashing to check hash-tables used for
          terminfo and termcap names.
        + fix a missing prototype for _nc_free_and_exit().
        + update a few comments about tack 1.07
        + use an awk script to split too-long pathnames used in Ada95 sample
          programs for explain.txt

20200118
        + expanded description of XM in user_caps.5
        + improve xm example for xterm+x11mouse, xterm+sm+1006 -TD
        + add history section to curs_slk.3x and curs_terminfo.3x manpages.
        + update alacritty entries for 0.4.0 (prompted by patch by
          Christian Durr) -TD
        + correct spelling errors found with codespell.
        + fix for test/configure, from xterm #352.

20200111
        + improve configure macros which check for the X11/Intrinsic.h header,
          to accommodate recent MacOS changes.
        + suppress gcc's -Winline warning; it has not been useful for some time
        + update config.guess, config.sub

20200104
        + modify a couple of macros in aclocal.m4 to allow autoconf 2.69 to
          "work", to help illustrate discussion in
          https://invisible-island.net/autoconf/my-autoconf.html
        + fix some warnings from autoheader-252

20191228
        + in gen-pkgconfig.in, move the RPATH_LIST and PRIVATE_LIBS assignments
          past the various prefix/libdir assignments, to allow for using those
          symbols, e.g., as done via CF_SHARED_OPTS.
        + improve ncurses*-config and pc-files by filtering out linker-specs.
        + modify test-package to more closely match Fedora's configuration
          for PIE/PIC feature and debug-packages.

20191221
        + correct pathname used in Ada95 sample programs for explain.txt, to
          work with test-packages.
        + improve tracemunch:
          + keep track of TERMINAL* values
          + if tracing was first turned on after initialization, attempt to
            show distinct screen, window and terminal names anyway.
        + ensure that GCC_NORETURN is defined in term.h, because the prototype
          for exit_terminfo() uses it (report by Werner Fink).

20191214
        + add exit_curses() and exit_terminfo() to replace internal symbols for
          leak-checking.

20191207
        + fix a few warnings for test-package builds
        + add curses_trace(), to replace trace().

20191130
        + add portability section to curs_getcchar manpage (prompted by
          discussion with Nick Black).
        + improve portability discussion of ACS characters in curs_addch
          manpage.
        + improve typography for double-quotes in manpages.

20191123
        + fix typo for MinGW rpm test-package.
        + workaround in rpm specs for NFS problems in Fedora 31.

20191116
        + modify ncurses/Makefile.in to fix a case where Debian/testing changes
          to the ld --as-needed configuration broke ncurses-examples test
          packages.
        + drop library-dependency on psapi for MinGW port, since win_driver.c
          defines PSAPI_VERSION to 2, making it use GetProcessImageFileName
          from kernel32.dll (prompted by patch by Simon Sobish, cf: 20140503).

20191109
        + add warning-check in tic for terminals with parm_dch vs parm_ich.
        + drop ich1 from rxvt-basic, Eterm and mlterm to improve compatibility
          with old non-curses programs -TD
        + reviewed st 0.8.2, updated some details -TD
        + use ansi+rep several places -TD
        + corrected tic's check for ich1 (report by Sebastian J. Bronner,
          cf: 20020901).

20191102
        + check parameter of set_escdelay, return ERR if negative.
        + check parameter of set_tabsize, return ERR if not greater than zero
          (report/patch by Anthony Sottile).
        + revise CF_ADD_LIBS macro to prepend rather than append libraries.
        + add "xterm-mono" to help packagers (report by Sven Joachim) -TD

20191026
        + add a note in man/curs_add_wch.3x about Unicode terminology for the
          line-drawing characters (report by Nick Black).
        + improve comment in lib_tgoto.c regarding the use of \200 where a
          \0 would be intended by the caller (report by "64 bit", cf: 20000923).
        + modify linux-16color to accommodate Linux console driver change in
          early 2018 (report by Dino Petrucci).

20191019
        + modify make_hash to not require --disable-leaks, to simplify building
          with address-sanitizer.
        + modify tic to exit if it cannot remove a conflicting name, because
          treating that as a partial success can cause an infinite loop in
          use-resolution (report/testcase by Hongxu Chen, cf: 20111001).

20191015
        + improve buffer-checks in captoinfo.c, for some cases when the
          input string is shorter than expected.
        > fix two errata in tic (report/testcases by Hongxu Chen):
        + check for missing character after backslash in write_it
        + check for missing characters after "%>" when converting from termcap
          syntax (cf: 980530).

20191012
        + amend recent changes to ncurses*-config and pc-files to filter out
          Debian linker-flags (report by Sven Joachim, cf: 20150516).
        + clarify relationship between tic, infocmp and captoinfo in manpage.
        + check for invalid hashcode in _nc_find_type_entry and
          _nc_find_name_entry.
        > fix several errata in tic (reports/testcases by "zjuchenyuan"):
        + check for invalid hashcode in _nc_find_entry.
        + check for missing character after backslash in fmt_entry
        + check for acsc with odd length in dump_entry in check for one-one
          mapping (cf: 20060415);
        + check length when converting from old AIX box_chars_1 capability,
          overlooked in changes to eliminate strcpy (cf: 20001007).

20191005
        + modify the ncurse*-config and pc-files to more closely match for the
          -I and -l options.

20190928
        + amend the ncurses*-config and pc-files to take into account the rpath
          hack which differed between those files.
        + improve -L option filtering in ncurses*-config
        + improve recovery from error when reading command-character in
          test/ncurses.c, showing the relevant error message and not exiting on
          EINTR (cf: 20180922)

20190921
        + add a note in resizeterm manpage about top-level windows which touch
          the screen's borders.
        + modify configure-checks for gnat to identify each of the tools path
          and version.

20190914
        + build-fixes for Ada95 configure-script and corresponding test package

20190907
        + add --with-ada-libname option and modify Ada95 configuration to
          allow renaming the "AdaCurses" library (prompted by proposed changes
          by Pascal Pignard).
        + modify configure script to distinguish gcc from icc and clang when
          the --enable-warnings option is not used, to avoid unnecessary
          warnings about unrecognized inline options (report by Sven Joachim).

20190831
        + build-fixes for configuration using --program-suffix with Ada95,
          noticed with MacOS but applicable to other platforms without
          libpanelw, etc.

20190824
        + fix some cppcheck warnings, mostly style, in ncurses test-programs.

20190817
        + amend 20181208 changes for wbkgd() and wbkgrnd(), fixing a few
          details where it still differed from SVr4.
        + fix some cppcheck warnings, mostly style, in ncurses test-programs.

20190810
        + fix a few more coverity warnings.

20190803
        + improve loop limits in _nc_scroll_window() to handle a case where
          the scrolled data is a pad which is taller than the window (patch
          by Rob King).
        + amend the change to screen, because tmux relies upon that entry
          and does not support that feature (Debian #933572) -TD
        + updated ms-terminal entry & notes -TD
        + updated kitty entry & notes -TD
        + updated alacritty+common entry & notes -TD
        + use xterm+sl-twm for consistency -TD

20190728
        + fix a few more coverity warnings.
        + more documentation updates based on tctest.

20190727
        + fix a few coverity warnings.
        + documentation updates based on tctest.

20190720
        + fix a few warnings for gcc 4.x
        + add some portability/historical details to the tic, toe and infocmp
          manual pages.
        + correct fix for broken link from terminfo(5) to tabs(1) manpage
          (report by Sven Joachim).

20190713
        + change reset's behavior for margins to simply clear soft-margins if
          possible, rather than clearing and then setting them according to the
          terminal's width (suggested by Thomas Wolff).
        + correct order of one wbkgd versus start_color call in test/padview.c

20190706
        + add domterm -TD
        + improve comments for recent changes, add alias xterm.js -TD

20190630
        + add --with-tic-path and --with-infocmp-path to work around problems
          building fallback source using pre-6.0 tic/infocmp.
        + add a check in tic for paired indn/rin
        + correct a buffer-limit in write_entry.c for systems that use caseless
          filenames.
        + add ms-terminal -TD
        + add vscode, vscode-direct -TD

20190623
        + improve the tabs.1 manual page to distinguish the PWB/Unix and 7th
          Edition versions of the tabs utility.
        + add configure check for getenv() to work around implementation shown
          in Emscripten #6766, use that to optionally suppress START_TRACE
          macro, whose call to getenv() may not work properly (report by Ilya
          Ig Petrov).
        + modify initialization functions to avoid relying upon persistent
          data for the result from getenv().
        + update config.guess, config.sub

20190615
        + expand the portability section of the man/tabs.1 manual page.
        + regenerate HTML manpages.

20190609
        + add mintty, mintty-direct (adapted from patch by Thomas Wolff).
          Some of the suggested user-defined capabilities are commented-out,
          to allow builds with ncurses 5.9 and 6.0
        + add Smol/Rmol for tmux, vte-2018 (patch by Nicholas Marriott).
        + add rs1 to konsole, mlterm -TD
        + modify _nc_merge_entry() to make a copy of the data which it merges,
          to avoid modifying the source-data when aligning extended names.

20190601
        + modify an internal call to vid_puts to pass extended color pairs
          e.g., from tty_update.c and lib_mvcur.c (report by Niegodziwy Beru).
        + improve manual page description of init_tabs capability and TABSIZE
          variable.

20190525
        + modify reset_cmd.c to allow for tabstops at intervals other than 8
          (report by Vincent Huisman).

20190518
        + update xterm-new to xterm patch #345 -TD
        + add/use xterm+keypad in xterm-new (report by Alain D D Williams) -TD
        + update terminator entry -TD
        + remove hard-tabs from ti703 (report by Robert Clausecker)
        + mention meml/memu/box1 in user_caps manual page.
        + mention user_caps.5 in tic and infocmp manual pages.

20190511
        + fix a spurious blank line seen with "infocmp -1fx xterm+x11mouse"
        + add checks in repair_subwindows() to keep the current position and
          scroll-margins inside the resized subwindow.
        + add a limit check in newline_forces_scroll() for the case where the
          row is inside scroll-margins, but not at the end (report by Toshio
          Kuratomi, cf: 20170729).
        + corrected a warning message in tic for extended capabilities versus
          number of parameters.

20190504
        + improve workaround for Solaris wcwidth versus line-drawing characters
          (report by Pavel Stehule).
        + add special case in tic to validate RGB string-capability extension.
        + corrected string/parameter-field for RGB in Caps-ncurses.

20190427
        + corrected problem in terminfo load/realignment which prevented
          infocmp from comparing extended capabilities with the same name
          but different types.

20190420
        + improve ifdef's for TABSIZE variable, to help with AIX/HPUX ports.

20190413
        + check for TABSIZE variable in test/configure script.
        + used test/test_arrays.c to improve Caps.aix1 and Caps.hpux11
        + corrected filtering of comments in MKparametrized.sh
        + reduce duplication across Caps* files by moving some parts which do
          not depend on order into Caps-ncurses.

20190406
        + modify MKcaptab.sh, MKkey_defs.sh, and MKhashsize.sh to handle
          split-up Caps-files.
        + build-fixes if extended-functions are disabled.

20190330
        + add "screen5", to mention italics (report by Stefan Assmann)
        + modify description of xterm+x11hilite to eliminate unused p5 -TD
        + add configure script checks to help with a port to Ultrix 3.1
          (report by Dennis Grevenstein).
          + check if "b" binary feature of fopen works
          + check for missing feature of locale.h
          + add fallback for strstr() in test-programs
          + add fallback for STDOUT_FILENO in test-programs
        + update config.guess, config.sub

20190323
        + move macro for is_linetouched() inside NCURSES_NOMACROS ifndef.
        + corrected prototypes in several manpages using script to extract
          those in compilable form.
        + use _nc_copy_termtype2() rather than direct assignment in setupterm,
          in case it is called repeatedly using fallback terminfo descriptions
          (report/patch by Werner Fink).

20190317
        + regenerate llib-* files.
        + modify tic to also use new function for user-defined capability info.
        + modify _nc_parse_entry() to check if a user-defined capability has
          an unexpected type; ignore it in that case.
        + fix a special case of link-anchors in generated Ada html files.
        + use newer rel=author tag in generated html rather than rev=made,
          which did not become accepted.

20190309
        + in-progress changes to add parameter-checking for common user-defined
          capabilities in tic.
        + update MKcodes.awk and MKnames.awk to ignore the new "userdef"
          data in Caps-ncurses (cf: 20190302).

20190302
        + corrected some of the undocumented terminfo names in Caps.hpux11
        + add "Caps-ncurses" file to help with checking inconsistencies in some
          user-defined capabilities.
        + amend check for repeat_char to handle a case where setlocale() was
          called after initscr() (report by "Ampera").

20190223
        + fix typo in adds200 -TD
        + add tic check for consistent alternate character set capabilities.
        + improve check in mvcur() to decide whether to use hard-tabs, using
          xt, tbc and hts as clues.
        + replace check in reset command for obsolete "pt" capability using
          tbc and hts capabilities as clues (report by Nicolas Marriott).

20190216
        + improve manual page description of TABSIZE.
        + add test/demo_tabs program.

20190209
        + add check in tic to provide warnings for mismatched number of
          parameters in the documented user-capability extensions.

20190202
        + modify rpm test-package ".spec" file to work around naming conflict
          with Redhat's package for ncurses6.
        + modify no-leaks code in test/picsmap to avoid non-standard tdestroy.
        + amend change to configure script which altered the top-level makefile
          to avoid attempting to install the terminfo database when it was not
          configured, to allow for installing the ".pc" files which are also
          in the misc directory (report by Steve Wills).

20190126
        + change some "%define" statements in test-packages for RPMs to
          "%global" to work around changes in rpm 4.14 from recent Redhat.
        + fixes for O_INPUT_FIELD extension (patch by Leon Winter).
        + eliminate fixed buffer-size when reading $TERMCAP variable.
        + correct logic in read_entry.c which prevented $TERMCAP variable from
          being interpreted as a fallback to terminfo entry (prompted by
          Savannah #54556, cf: 20110924).

20190121
        + add a check in test/configure to work around non-ncurses termcap.h
          file in Slackware.
        + corrected flag for "seq" method of db 1.8.5 interface, needed by toe
          on some of the BSDs.
        + updated "string-hacks" feature.
        + minor improvements to manpage typography.
        + corrected conditionally-compiled limit on color pairs (report by
          "Hudd").
        + add -x option to test/pair_content, test/color_content for testing
          init_extended_pair, extended_pair_content, init_extended_color,
          extended_color_content
        + add -p option to test/pair_content, test/color_content to show the
          return values from the tested functions.
        + improve manual page curs_color.3x discussion of error returns and
          extensions.
        + add O_INPUT_FIELD extension to form library (patch by Leon Winter).
        + override/suppress --enable-db-install if --disable-database configure
          option was given.
        + change a too-large terminal entry in tic from a fatal error to a
          warning (prompted by discussion with Gabriele Balducci).

20190112
        + fix typo in term(5), improve explanation of format (report by Otto
          Modinos).
        + add nsterm-direct -TD
        + use SGR 1006 mouse for konsole-base -TD
        + use SGR 1006 mouse for putty -TD
        + add ti703/ti707, ti703-w/ti707-w (Robert Clausecker)

20190105
        + add dummy "check" rule in top-level and test-Makefile to simply
          building test-packages for Arch.
        + modify configure script to avoid conflict with a non-POSIX feature
          that enables all parts of the system headers by default.  Some
          packagers have come to rely upon this behavior (FreeBSD #234049).
        + update config.guess, config.sub

20181229
        + improve man/curs_mouse.3x with regard to xterm
        + modify tracemunch to accept filename parameters in addition to use
          as a pipe/filter.
        + minor optimization to reduce calls to _nc_reserve_pairs (prompted by
          discussion with Bryan Christ).
        + add test/pair_content.c and test/color_content.c
        + modify infocmp to omit filtering of "OTxx" names which are used for
          obsolete capabilities, when the output is sorted by long-names.
          Doing this helps when making a table of the short/long capability
          names.

20181215
        + several fixes for gcc8 strict compiler warnings.
        + fix a typo in comments (Aaron Gyes).
        + add nsterm-build309 to replace nsterm-256color, assigning the latter
          as an alias of nsterm, to make mouse work with nsterm-256color -TD
        + base gnome-256color entry on "gnome", not "vte", for consistency -TD
        + updates for configure macros from work on tin and xterm:
          + CF_GNU_SOURCE, allow for Cygwin's newlib when checking for the
            _DEFAULT_SOURCE symbol.
          + CF_VA_COPY, add fallback check if neither va_copy/__va_copy is
            supported, to try copying the pointers for va_list, or as an array.
            Also add another fallback check, for __builtin_va_copy(), which
            could be used with AIX xlc in c89 mode.

20181208
        + modify wbkgd() and wbkgrnd() to improve compatibility with SVr4
          curses, changing the way the window rendition is updated when the
          background character is modified (report by Valery Ushakov).

20181201
        + add midnightbsd to CF_XOPEN_SOURCE macro (patch by Urs Jansen).
        + add "@" command to test/ncurses F-test, to allow rapid jump to
          different character pages.
        + update config.guess, config.sub from
                http://git.savannah.gnu.org/cgit/config.git

20181125
        + build-fix (reports by Chih-Hsuan Yen, Sven Joachim).

20181124
        + check --with-fallbacks option to ensure there is a value, and add
          the fallback information to top-level Makefile summary.
        + add some traces in initialization to show whether a fallback entry is
          used.
        + build-fix for test/movewindow with ncurses-examples on Solaris.
        + add "-l" option to test/background, to dump screen contents in a form
          that lets different curses implementations be compared.
        + modify the initialization checks for mouse so that the xterm+sm+1006
          block will work with terminal descriptions not mentioning xterm
          (report by Tomas Janousek).

20181117
        + ignore the hex/b64 $TERMINFO in toe's listing.
        + correct a status-check in _nc_read_tic_entry() so that if reading
          a hex/b64 $TERMINFO, and the $TERM does not match, fall-through to
          the compiled-in search list.

20181110
        + several workarounds to ensure proper C compiler used in parts of
          Ada95 tree.
        + update config.guess, config.sub from
                http://git.savannah.gnu.org/cgit/config.git

20181027
        + add OpenGL clients alacritty and kitty -TD
        + add Smulx for tmux, vte-2018 -Nicholas Marriott

20181020
        + ignore $TERMINFO as a default value in configure script if it came
          from the infocmp -Q option.
        + allow value for --with-versioned-syms to be a relative pathname
        + add a couple of broken-linker symbols to the list of versioned
          symbols to help with link-time optimization versus weak symbols.
        + apply shift/control/alt logic when decoding xterm's 1006 mode to
          wheel-mouse events (Redhat #1610681).

20181013
        + amend change from 20180818, which undid a fix for the $INSTALL value
          to make it an absolute path.

20181006
        + improve a configure check to work with newer optimizers (report by
          Denis Pronin, Gentoo #606142).
        + fix typo in tput.c (Sven Joachim, cf: 20180825).

20180929
        + fix typo in tvi955 -TD
        + corrected acsc for regent60 -TD
        + add alias n7900 -TD
        + corrected acsc for tvi950 -TD
        + remove bogus kf0 from tvi950 -TD
        + added function-key definitions to agree with Televideo 950 manual -TD
        + add bel to tvi950 -TD
        + add shifted function-keys to regent60 -TD
        + renumber regent40 function-keys to match manual -TD
        + add cd (clr_eos) to adds200 -TD

20180923
        + build-fix: remove a _tracef call which was used for debugging (report
          by Chris Clayton).

20180922
        + ignore interrupted system-call in test/ncurses's command-line, e.g.,
          if the terminal were resized.
        + add shift/control/alt logic for decoding xterm's 1006 mode (Redhat
          #1610681, cf: 20141011).
        + modify rpm test-packages to not use --disable-relink with Redhat,
          since Fedora 28's tools do not work with that feature.

20180908
        + document --with-pcre2 configure option in INSTALL.
        + improve workaround for special case in PutAttrChar() where a cell is
          marked as alternate-character set, to handle a case where the
          character in the cell does not correspond to any of the ASCII
          fallbacks (report by Leon Winter, cf: 20180505).
        + amend change to form library which attempted to avoid unnecessary
          update of cursor position in non-public fields, to simply disable
          output in this case (patch by Leon Winter, cf: 20180414).
        + improve check for LINE_MAX runtime limit, to accommodate broken
          implementations of sysconf().

20180901
        + improve manual page for wgetnstr, giving background for the length
          parameter.
        + define a limit for wgetnstr, wgetn_wstr when length is negative or
          "too large".
        + update configure script to autoconf 2.52.20180819 (Debian #887390).

20180825
        + add a section to tput manual page clarifying how it determines the
          terminal size (prompted by discussion with Grant Jenks).
        + add "--disable-relink" to rpm test-packages, for consistency with the
          deb test-packages.
        + split spec-file into ncurses6.spec and ncursest6.spec to work around
          toolset breakage in Fedora 28.
        + drop mention of "--disable-touching", which was not in the final
          20180818 updates.

20180818
        + build-fix for PDCurses with ncurses-examples.
        + improved CF_CC_ENV_FLAGS.
        + modify configure scripts to reduce relinking/ranlib during library
          install (Debian #903790):
          + use "install -p" when available, to avoid need for ranlib of
            static libraries.
          + modify scripts which use "--disable-relink" to add a 1-second
            sleep to work around tools which use whole-second timestamps, e.g.,
            in utime() rather than the actual file system resolution.

20180804
        + improve logic for clear with E3 extension, in case the terminal
          scrolls content onto its saved-lines before actually clearing
          the display, by clearing the saved-lines after clearing the
          display (report/patch by Nicholas Marriott).

20180728
        + improve documentation regarding feature-test macros in curses.h
        + improve documentation regarding the virtual and physical screens.
        + formatting fixes for manpages, regenerate man-html documentation.

20180721
        + build-fixes for gcc8.
        + corrected acsc for wy50 -TD
        + add wy50 and wy60 shifted function-keys as kF1 to kF16 -TD
        + remove ansi+rep mis-added to interix in 2018-02-23 -TD

20180714
        + add enum, regex examples to test/demo_forms
        + add configure check for pcre-posix library to help with MinGW port.

20180707
        + build-fixes for gcc8.
        + correct order of WINDOW._ttytype versus WINDOW._windowlist in
          report_offsets.
        + fix a case where tiparm could return null if the format-string was
          empty (Debian #902630).

20180630
        + add acsc string to vi200 (Nibby Nebbulous)
          add right/down-arrow to vi200's acsc -TD
        + add "x" to tput's getopt string so that "tput -x clear" works
          (Nicholas Marriott).
        + minor fixes prompted by anonymous report on stack overflow:
          + correct order of checks in _nc_get_locale(), for systems lacking
            locale support.
          + add "#error" in a few places to flag unsupported configurations

20180623
        + use _WIN32/_WIN64 in preference to __MINGW32__/__MINGW64__ symbols
          to simplify building with MSVC, since the former are defined in both
          compiler configurations (report by Ali Abdulkadir).
        + further improvements to configure-checks from work on dialog, i.e.,
          updated CF_ADD_INCDIR, CF_FIND_LINKAGE, CF_GCC_WARNINGS,
          CF_GNU_SOURCE, CF_LARGEFILE, CF_POSIX_C_SOURCE, CF_SIZECHANGE, and
          CF_TRY_XOPEN_SOURCE.
        + update config.guess, config.sub from
                http://git.savannah.gnu.org/cgit/config.git

20180616
        + build-fix for ncurses-examples related to gcc8-fixes (cf: 20180526).
        + reduce use of _GNU_SOURCE for current glibc where _DEFAULT_SOURCE
          combines with _XOPEN_SOURCE (Debian #900987).
        + change target configure level for _XOPEN_SOURCE to 600 to address
          use of vsscanf and setenv.
        + improved configure-checks CF_SIZECHANGE and CF_STRUCT_TERMIOS from
          work on dialog.

20180609
        + modify generated ncurses*config and ncurses.pc, ncursesw.pc, etc.,
          to list helper libraries such as gpm for static linking (Debian
          #900839).
        + marked vwprintw and vwscanw as deprecated; recommend using vw_printw
          and vw_scanw, respectively.

20180602
        + add RPM test-package "ncursest-examples".
        + modified RPM test-package to work with Mageia6.

20180526
        + add note in curs_util.3x about unctrl.h
        + review/improve header files to ensure that those include necessary
          files except for the previously-documented cases (report by Isaac
          Pascual Monells).
        + improved test-package scripts, adapted from byacc 1.9 20180525.
        + fix some gcc8 warnings seen in Redhat package build, but
          work around bug in gcc8 compiler warnings in comp_parse.c

20180519
        + formatting fixes for manpages, regenerate man-html documentation.
        + trim spurious whitespace from tmux in 2018-02-24 changes;
          fix some inconsistencies in/between tmux- and iterm2-entries for SGR
          (report by C Anthony Risinger)
        + improve iterm2 using some xterm features which it has adapted -TD
        + add check in pair_content() to handle the case where caller asks
          for an uninitialized pair (Debian #898658).

20180512
        + remove trailing ';' from GCC_DEPRECATED definition.
        + repair a change from 20110730 which left an error-check/warning dead.
        + fix several minor Coverity warnings.

20180505
        + add deprecation warnings for internal functions called by older
          versions of tack.
        + fix a special case in PutAttrChar() where a cell is marked as
          alternate-character set, but the terminal does not actually support
          the given graphic character.  This would happen in an older terminal
          such as vt52, which lacks most line-drawing capability.
        + use configure --with-config-suffix option to work around filename
          conflict with Debian packages versus test-packages.
        + update tracemunch to work with perl 5.26.2, which changed the rules
          for escaping regular expressions.

20180428
        + document new form-extension O_EDGE_INSERT_STAY (report by Leon
          Winter).
        + correct error-returns listed in manual pages for a few form functions
          (report by Leon Winter).
        + add a check in form-library for null-pointer dereference:
                unfocus_current_field (form);
                form_driver (form, REQ_VALIDATION);
          (patch by Leon Winter).

20180414
        + modify form library to optionally delay cursor movement on a field
          edge/boundary (patch by Leon Winter).
        + modify form library to avoid unnecessary update of cursor position in
          non-public fields (patch by Leon Winter).
        + remove unused _nc_import_termtype2() function.
        + also add/improve null-pointer checks in other places
        + add a null-pointer check in _nc_parse_entry to handle an error when
          a use-name is invalid syntax (report by Chung-Yi Lin).

20180407
        + clarify in manual pages that vwprintw and vwscanw are obsolete,
          not part of X/Open Curses since 2007.
        + use "const" in some prototypes rather than NCURSES_CONST where X/Open
          Curses was updated to do this, e.g., wscanw, newterm, the terminfo
          interface.  Also use "const" for consistency in the termcap
          interface, which was withdrawn by X/Open Curses in Issue 5 (2007).
          As of Issue 7, X/Open Curses still lacks "const" for certain return
          values, e.g., keyname().

20180331
        + improve terminfo write/read by modifying the fourth item of the
          extended header to denote the number of valid strings in the extended
          string table (prompted by a comment in unibilium's sources).

20180324
        + amend Scaled256() macro in test/picsmap.c to cover the full range
          0..1000 (report by Roger Pau Monne).
        + add some checks in tracemunch for undefined variables.
        + trim some redundant capabilities from st-0.7 -TD
        + trim unnecessary setf/setb from interix -TD

20180317
        + fix a check in infotocap which may not have detected a problem when
          it should have.
        + add a check in tic for the case where setf/setb are given using
          different strings, but provide identical results to setaf/setab.
        + further improve fix for terminfo.5 (patch by Kir Kolyshkin).
        + reorder loop-limit checks in winsnstr() in case the string has no
          terminating null and only the number of characters is used (patch
          by Gyorgy Jeney).

20180303
        + modify TurnOn/TurnOff macros in lib_vidattr.c and lib_vid_attr.c to
          avoid expansion of "CUR" in trace.
        + improve a few lintian warnings in test-packages.
        + modify lib_setup to avoid calling pthread_self() without first
          verifying that the address is valid, i.e., for weak symbols
          (report/patch by Werner Fink).
        + modify generated terminfo.5 to not use "expand" and related width
          on the last column of tables, making layout on wide terminals look
          better (adapted from patch by Kir Kolyshkin).
        + add a category to report_offsets, e.g., "w" for wide-character, "t"
          for threads to make the report more readable.  Reorganized the
          structures reported to make the categories more apparent.
        + simplify some ifdef's for extended-colors.
        + add NCURSES_GLOBALS and NCURSES_PRESCREEN to report_offsets, to show
          how similar the different tinfo configurations are.

20180224
        + modify _nc_resolve_uses2() to detect incompatible types when merging
          a "use=" clause of extended capabilities.  The problem was seen in a
          defective terminfo integrated from simpleterm sources in 20171111,
          compounded by repair in 20180121.
        + correct Ss/Ms interchange in st-0.7 entry (tmux #1264) -TD
        + fix remaining flash capabilities with trailing mandatory delays -TD
        + correct cut/paste in NEWS (report by Sven Joachim).

20180217
        + remove incorrect free() from 20170617 changes (report by David Macek).
        + correct type for "U8" in user_caps.5; it is a number not boolean.
        + add a null-pointer check in safe_sprintf.c (report by Steven Noonan).
        + improve fix for Debian #882620 by reusing limit2 variable (report by
          Julien Cristau, Sven Joachim).

20180210
        + modify misc/Makefile.in to install/uninstall explicit list in case
          the build-directory happens to have no ".pc" files when an uninstall
          is performed (report by Jeffrey Walton).
        + deprecate safe-sprintf, since the vsnprintf function, which does what
          was needed, was standardized long ago.
        + add several development/experimental options to development packages.
        + minor reordering of options in configure script to make the threaded
          and reentrant options distinct from the other extensions which are
          normally enabled.

20180203
        + minor fixes to test/*.h to make them idempotent.
        + add/use test/parse_rgb.h to show how the "RGB" capability works.
        + add a clarification in user_caps.5 regarding "RGB" capability.
        + add extended_slk_color{,_sp} symbols to the appropriate
          package/*.{map,sym} files (report by Sven Joachim, cf: 20170401).

20180129
        + update "VERSION" file, used in shared-library naming.

20180127 6.1 release for upload to ftp.gnu.org

20180127
        + updated release notes
        + amend a warning message from tic which should have flagged misuse
          of "XT" capability in "screen" terminal description.
        > terminfo changes:
        + trim "XT" from screen entry, add comments to explain why it was
          not suitable -TD
        + modify iterm to use xterm+sl-twm building block -TD
        + mark konsole-420pc, konsole-vt100, konsole-xf3x obsolete reflecting
          konsole's removal in 2008 -TD
        + expanded the history section of konsole to explain its flawed
          imitation of xterm's keyboard -TD
        + use xterm+x11mouse in screen.* entries because screen does not yet
          support xterm's 1006 mode -TD
        + add nsterm-build400 for macOS 10.13 -TD
        + add ansi+idc1, use that in ansi+idc adding dch for consistency -TD
        + update vte to vte-2017 -TD
        + add ecma+strikeout to vte-2017 -TD
        + add iterm2-direct -TD
        + updated teraterm, added teraterm-256color -TD
        + add mlterm-direct -TD
        + add descriptions for ANSI building-blocks -TD

20180121 pre-release
        > terminfo changes:
        + add xterm+noalt, xterm+titlestack, xterm+alt1049, xterm+alt+title
          blocks from xterm #331 -TD
        + add xterm+direct, xterm+indirect, xterm-direct entries from xterm
          #331 -TD
        + modify xterm+256color and xterm+256setaf to use correct number of
          color pairs, for ncurses 6.1 -TD
        + add rs1 capability to xterm-256color -TD
        + modify xterm-r5, xterm-r6 and xterm-xf86-v32 to use xterm+kbs to
          match xterm #272, reflecting packager's changes -TD
        + remove "boolean" Se, Ss from st-0.7 -TD
        + add konsole-direct and st-direct -TD
        + remove unsupported "Tc" capability from st-0.7; use st-direct if
          direct-colors are wanted -TD
        + add vte-direct -TD
        + add XT, hpa, indn, and vpa to screen, and invis, E3 to tmux (patch by
          Pierre Carru)
        + use xterm+sm+1006 in xterm-new, vte-2014 -TD
        + use xterm+x11mouse in iterm, iterm2, mlterm3 because xterm's 1006
          mode does not work with those programs.  konsole is debatable -TD
        + add "termite" entry (report by Markus Pfeiffer) -TD
        > merge branch begun April 2, 2017 which provides these features:
        + support read/write new binary-format for terminfo which stores
          numeric capabilities as a signed 32-bit integer.  The test programs
          such as picsmap, ncurses were created or updated during 2017 to use
          this feature.
        + the new format is written by the wide-character configuration of
          tic when it finds a numeric capability larger than 32767.
        + other applications such as infocmp built with the wide-character
          ncurses library work as expected.
        + applications built with the "narrow" (8-bit) configuration will
          read the new format, but will limit those extended values to 32767.
        + in either wide/narrow configuration, the structure defined in
          term.h still uses signed 16-bit values.
        + because it is incompatible with the legacy (mid-1980s) binary format,
          a new magic value is provided for the "file" program.
        + the term.5 manual page is updated to describe this new format.
        + the limit on file-size for compiled terminfo is increased in the
          wide-character configuration to 32768.

20180120
        + build-fix in picsmap.c for stdint.h existence.
        + add --disable-stripping option to configure scripts.
        + modify ncurses-examples to install test-scripts in the data directory.
        + work around tool-breakage in Debian 9 and later by invoking
          gprconfig to specify the C compiler to be used by gnatmake,
          and conditionally suppressing Library_Options line for static
          libraries.
        + bump the compat level for test-packages to 7, i.e., Debian 5.

20180106
        + fixes for writing extended color pairs in putwin.
        + modify test/savescreen.c to add test patterns that exercise 88-,
          256-, etc., colors.
        + modify configure option --with-build-cc, adding clang, c89 and c99
          as possible default values.
        + modify ncurses-examples configure script to use pkg-config for the
          extra form/menu/panel libraries, to be more consistent with the
          handling of the curses/ncurses library.
        + modify test-packages for mingw to supply "pc" files.
        + modify gen-pkgconfig.in to list -lpthread as a private library when
          configured to access it via weak symbols.
        + simplify gen-pkgconfig.in, adding -ltinfo without the special linker
          checks because some versions of the linker simply hard-code the
          behavior.
        + update URLs for ncurses website to use https.
        + modify CF_CURSES_LIBS to fill in $cf_nculib_root in case the
          ncurses-examples are built with a system ncurses that lacks the
          standard "curses" symbolic link, as done by SuSE.  The symbol is
          needed to make a followup check for the pthread library work, and
          would be set properly using the options "--with-screen", etc.
        + generate misc/*.pc with "all" rule, as done for "sources" rule
          (report by Jeffrey Walton).

20171230
        + build-fix for ncurses-examples with Fedora27, adding check for
          reset_color_pairs() -- not yet in Fedora's package.
        + consistently add $CFLAGS to $MK_SHARED_LIB symbol in configure
          script when the latter happens to use the C compiler rather than
          directly using the loader (report by Jeffrey Walton).
        + set ABI for upcoming 6.1 release in "*.map" files.  While there are
          some remaining internals to apply, no ABI-related changes are
          anticipated.
        + add configure --with-config-suffix option to work around filename
          conflict with Redhat packages versus test-packages.

20171223
        + modify ncurses-examples to quiet const-warnings when building with
          PDCurses.
        + modify toe to not exit if unable to read a terminal description,
          e.g., if there is a permission problem.
        + minor fix for progs/toe.c, using _nc_free_termtype2.
        + assign 0 to pointer in _nc_tgetent_leak() after freeing it. Also
          avoid reusing pointer from previous successful call to tgetent
          if the latest call is unsuccessful (patch by Michael Schroeder,
          OpenSuSE #1070450).
        + minor fix for test/tracemunch, initialize $awaiting variable.

20171216
        + repair template in test/package/ncurses-examples.spec (cf: 20171111).
        + improve tic's warning about the number of parameters tparm might use
          for u1-u9 by making a special case for u6.
        + improve curs_attr.3x discussion of color pairs.

20171209
        + modify misc/ncurses-config.in to make output with --includedir
          consistent with --cflags, i.e., when --disable-overwrite option was
          configured the output should show the subdirectory where headers
          are.
        + modify MKlib_gen.sh to suppress macros when calling an "implemented"
          function in link_test.c
        + updated ftp-url used in test-packages, etc.
        + modify order of -pie/-shared options in configure script in case
          LDFLAGS uses "-pie", working around a defect or limitation in the GNU
          linker (prompted by patch by Yogesh Prasad, forwarded by Jay Shah).
        + add entry in man_db.renames for user_caps.5

20171125
        + modify MKlib_gen.sh to avoid tracing result from getstr/getnstr
          before initialized.
        + add "-a" aspect-ratio option to picsmap.
        + add configure check for default path of rgb.txt, used in picsmap.
        + modify _nc_write_entry() to truncate too-long filename (report by
          Hosein Askari, Debian #882620).
        + build-fix for ncurses-examples with NetBSD curses:
          + it lacks the use_env() function.
          + it lacks libpanel; a recent change used the wrong ifdef symbol.
        + add a macro for is_linetouched() and adjust the function's return
          value to make it possible for most applications to check for an
          error-return (report by Midolikawa H).
        + additional manpage cleanup.
        + update config.guess, config.sub from
                http://git.savannah.gnu.org/cgit/config.git

20171118
        + add a note to curs_addch.3x on portability.
        + add a note to curs_pad.3x on the origin and portability of pads.
        + improve manpage description of getattrs (report by Midolikawa H).
        + improve manpage macros (prompted by discussion in Debian #880551.
        + reviewed test-programs using KEY_RESIZE, made fixes to test/worm.c
        + add a "-d" option to picsmap for default-colors.
        + modify old terminology entry and a few other terminal emulators to
          account for xon -TD
        + correct sgr string for tmux, which used screen's "standout" code
          rather than the standard code (patch by Roman Kagan)
        + correct sgr/sgr0 strings in a few other cases reported by tic, making
          those correspond to the non-sgr settings where they differ, but
          otherwise use ECMA-48 consistently:
          jaixterm, aixterm, att5420_2, att4424, att500, decansi, d410-7b,
          dm80, hpterm, emu-220, hp2, iTerm2.app, mterm-ansi, ncrvt100an,
          st-0.7, vi603, vwmterm -TD
        + build-fix for diagnostics warning in lib_mouse.c for pre-5.0 versions
          of gcc which did not recognize the diagnostic "push" pragma (patch by
          Vassili Courzakis).

20171111
        + add "op" to xterm+256setaf -TD
        + reviewed terminology 1.0.0 -TD
        + reviewed st 0.7 -TD
        + suppress debug-package for ncurses-examples rpm build.

20171104
        + check for interrupt in color-pair initialization of dots_curses.c,
          dots_xcurses.c
        + add z/Z zoom feature to test/ncurses.c C/c screens.
        + add '<' and '>' commands to test/ncurses.c S/s screens, to better
          test off-by-ones in the overlap/copywin functions.

20171028
        + improve man/curs_inwstr.3x, correct end-logic for lib_inwstr.c
          (report by Midolikawa H).
        + fix typo in a few places for "improvements" (patch by Sven Joachim).
        + clear the other half of a double-width character on which a line
          drawing character is drawn.
        + make test/ncurses.c "s" test easier to understand which subtests are
          available; add a "S" wide-character overlap test-screen.
        + modify test/ncurses.c C/c tests to allow for extended color pairs.
        + add endwin() call in error-returns from test/ncurses.c omitted in
          recent redesign of its menu (cf: 20170923).
        + improve install of hashed-db by removing the ".db" file as done for
          directory-tree terminal databases.
        + repair a few overlooked items in include/ncurses_defs from recent
          port/refactoring of test-programs (cf: 20170909).
        + add test/padview.c, to compare pads with direct updates in view.c

20171021
        + modify test/view.c to expand tabs using the ncurses library rather
          than in the test-program.
        + remove very old SIGWINCH example in test/view.c, just use KEY_RESIZE.
        + add -T, -e, -f -m options to "dots" test-programs.
        + fix a few typos in usage-messages for test-programs.

20171014
        + minor cleanup to test/view.c:
          + eliminate "-n" option by simply reading the whole file.
          + implement page up/down commands.
        + add check in tput for init/reset operands to ensure those use a
          terminal.
        + improve manual pages which discuss chtype, cchar_t types and the
          attribute values which can be stored in those types.
        + correct array-index when parsing "-T" command-line option in tabs
          program.
        + modify demo_new_pair.c to pass extended pairs to setcchar().
        + add test/dots_xcurses.c to illustrate a different approach used for
          extended colors which can be contrasted with dots_curses.c.
        + add a check in tic to note when a description uses non-mandatory
          delays without xon_xoff.  This is not an error, but some descriptions
          for a terminal emulator may use the combination incorrectly.

20171007
        + modify "-T" option of clear and tput to call use_tioctl() to obtain
          the operating system's notion of the screensize if possible.
        + review/repair some exit-codes for tput, making usage-message exit
          with 2 rather than 1, and a failure to open terminal 4+errno.
        + amend check in tput, tabs and clear to allow those to use the
          database-only features in cron if a -T option gives a suitable
          terminal name (report by Lauri Tirkkonen).
        + correct an ifdef in test/ncurses.c for systems with soft-keys but
          not slk_color().
        + regenerate man-html documentation.

20170930
        + fix a symbol conflict that made ncurses.c C/c menu not work with
          Solaris xpg4 curses.
        + add refresh() call to dots_mvcur.c, needed to use mvcur() with
          Solaris xpg4 curses after calling newterm().
        + minor fixes for configure script from work on ncurses-examples and
          tin.
        + improve animation in test/xmas.c by adding a time-delay in blinkit().
        + modify several test programs to reflect that ncurses honors existing
          signal handlers in initscr(), while other implementations do not.
        + modify bs.c to make it easier to quit.
        + change ncurses-examples to use attr_t vs chtype to follow X/Open
          documentation more closely since Solaris xpg4-curses uses different
          values for WA_xxx vs A_xxx that rely on attr_t being an unsigned
          short.  Tru64 aka OSF1, HPUX, AIX did as ncurses does, equating the
          two sets.

20170923
        + modify menu for test/ncurses.c to fit on 24-line screen.
        + build-fix for configure --with-caps=uwin
        + add options to test_arrays.c, for selecting termcap vs terminfo, etc.

20170916
        + minor fix to test/filter.c to avoid clearing the command in one case.
        + modify filter() to discard clr_eos if back_color_erase is set.

20170909
        + improve wide-character implementation of myADDNSTR() in frm_driver.c,
          which was inconsistent with the normal implementation.
        + save/restore cursor position in Undo_Justification(), matching
          behavior of Buffer_To_Window() (report by Leon Winter).
        + modify test/knight to provide the "slow" solution for small screens
          using "R", noting that Warnsdorf's method is easily done with "a".
        + modify several test-programs which call use_default_colors() to
          consistently do this only if "-d" option is given.
        + additional changes to test with non-standard variants of curses:
          + modify a loop limit in firework.c to work around absence of limit
            checks in some libraries.
          + fill the last row of a window with "?" in firstlast if waddch does
            not return ERR on the lower-right corner.
        + add checks in test/configure for some functions not in 4.3BSD curses.
        + fix a regression in test/configure (cf: 20170826).

20170902
        + amend change for endwin-state for better consistency with the older
          logic (report/patch by Jeb Rosen, cf: 20170722).
        + modify check in fmt_entry() to handle a cancelled reset string
          (Debian #873746).  Make similar fixes in other parts of dump_entry.c
          and tput.c

20170827
        + fix a bug in repeat_char logic (cf: 20170729, report by Chris Clayton).

20170826
        + fixes for "iterm2" (report by Leonardo Brondani Schenkel) -TD
        + corrected a warning from tic about keys which are the same, to skip
          over missing/cancelled values.
        + add check in tic for unnecessary use of "2" to denote a shifted
          special key.
        + improve checks in trim_sgr0, comp_parse.c and parse_entry.c, for
          cancelled string capabilities.
        + add check in _nc_parse_entry() for invalid entry name, setting the
          name to "invalid" to avoid problems storing entries.
        + add/improve checks in tic's parser to address invalid input
          + add a check in comp_scan.c to handle the special case where a
            nontext file ending with a NUL rather than newline is given to tic
            as input (Redhat #1484274).
          + allow for cancelled capabilities in _nc_save_str (Redhat #1484276).
          + add validity checks for "use=" target in _nc_parse_entry (Redhat
            #1484284).
          + check for invalid strings in postprocess_termcap (Redhat #1484285)
          + reset secondary pointers on EOF in next_char() (Redhat #1484287).
          + guard _nc_safe_strcpy() and _nc_safe_strcat() against calls using
            cancelled strings (Redhat #1484291).
        + correct typo in curs_memleaks.3x (Sven Joachim).
        + improve test/configure checks for some curses variants not based on
          X/Open Curses.
        + add options for test/configure to disable checks for form, menu and
          panel libraries.

20170819
        + update "iterm" entry -TD
        + add "iterm2" entry (report by Leonardo Brondani Schenkel) -TD
        + regenerate llib-* files.
        + regenerate HTML manpages.
        + improve picsmap test-program:
          + reduce memory used for tsearch
          + add report in log file showing cumulative color coverage.
        + add -x option to clear/tput to make the E3 extension optional
          (cf: 20130622).
        + add options -T and -V to clear command for compatibility with tput.
        + add usage message to clear command (Debian #371855).
        + improve usage messages for tset and tput.
        + minor fixes to "RGB" extension and reset_color_pairs().

20170812
        + improve description of -R option in infocmp manual page (report by
          Stephane Chazelas).
        + add reset_color_pairs() function.
        + add user_caps.5 manual page to document the terminfo extensions used
          by ncurses.
        + improve build scripts, using SIGQUIT vs SIGTRAP; add other configure
          script fixes from work on xterm, lynx and tack.
        + modify install-rule for ncurses-examples to put the data files in
          /usr/share/ncurses-examples
        + improve tracemunch, by changing address-parameters of add_wch(),
          color_content() and pair_content() to dummy parameters.
        + minor optimization to _nc_change_pair, to return quickly when the
          current screen is marked for clearing.
        + in-progress changes to improve performance of test/picsmap.c for
          loading image files.
        + modify allocation for SCREEN's color-pair table to start small, grow
          on demand up to the existing limit.
        + add "RGB" extension capability for direct-color support, use this to
          improve color_content().
        + improve picsmap test-program:
          + if no palette file is needed, attempt to load one based on $TERM,
            checking first in the current directory, then by adding ".dat"
            suffix, and finally in the data-directory, e.g.,
            /usr/share/ncurses-examples
          + add "-l" option for logging
          + add "-d" option for debugging
          + add "-s" option for stepping automatically through list of images,
            with time delay.
          + use tsearch to improve time for loading color table for images.
        + update config.guess, config.sub from
                http://git.savannah.gnu.org/cgit/config.git

20170729
        + update interix entry using tack and SFU on Windows 7 Ultimate -TD
        + use ^? for kdch1 in interix (reported by Jonathan de Boyne Pollard)
        + add "rep" to xterm-new, available since 1997/01/26 -TD
        + move SGR 24 and 27 from vte-2014 to vte-2012 (request by Alain
          Williams) -TD
        + add a check in newline_forces_scroll() in case a program moves the
          cursor outside scrolling margins (report by Robert King).
        + improve _nc_tparm_analyze, using that to extend the checks made by
          tic for reporting inconsistencies between the expected number of
          parameters for a capability and the actual.
        + amend handling of repeat_char capability in EmitRange (adapted from
          report/patch by Dick Wesseling):
          + translate the character to the alternate character set when the
            alternate character set is enabled.
          + do not use repeat_char for characters past 255.
        + document "_nc_free_tinfo" in manual page, because it could be used in
          tack for memory-leak checking.
        + add "--without-tack" configure option to refine "--with-progs"
          configure option.  Normally tack is no longer built in-tree, but
          a few packagers combine it during the build.  If term_entry.h is
          installed, there is no advantage to in-tree builds.
        + adjust configure-script to define HAVE_CURSES_DATA_BOOLNAMES symbol
          needed for tack 1.08 when built in-tree.  Rather than relying upon
          internal "_nc_" functions, tack now uses the boolean, number and
          string capability name-arrays provided by ncurses and SVr4 Unix
          curses.  It still uses term_entry.h for the definitions of the
          extended capability arrays.
        + add an overlooked null-pointer check in mvcur changes from 20170722

20170722
        + improve test-packages for ncurses-examples and AdaCurses for lintian
        + modify logic for endwin-state to be able to detect the case where
          the screen was never initialized, using that to trigger a flush of
          ncurses' buffer for mvcur, e.g., in test/dots_mvcur.c for the
          term-driver configuration.
        + add dependency upon ncurses_cfg.h to a few other internal header
          files to allow each to be compiled separately.
        + add dependency upon ncurses_cfg.h to tic's header-files; any program
          using tic-library will have to supply this file.  Legacy tack
          versions supply this file; ongoing tack development has dropped the
          dependency upon tic-library and new releases will not be affected.

20170715
        + modify command-line parameters for "convert" used in picsmap to work
          with ImageMagick 6.8 and newer.
        + fix build-problem with tack and ABI-5 (Debian #868328).
        + repair termcap-format from tic/infocmp broken in 20170701 fixes
          (Debian #868266).
        + reformat terminfo.src with 20170513 updates.
        + improve test-packages to address lintian warnings.

20170708
        + add a note to tic manual page about -W versus -f options.
        + correct a limit-check in fixes from 20170701 (report by Sven Joachim).

20170701
        + modify update_getenv() in db_iterator.c to ensure that environment
          variables which are not initially set will be checked later if an
          application happens to set them (patch by Guillaume Maudoux).
        + remove initialization-check for calling napms() in the term-driver
          configuration; none is needed.
        + add help-screen to test/test_getstr.c and test/test_get_wstr.c
        + improve compatibility between different configurations of new_prescr,
          fixing a case with threaded code and term-driver where c++/demo did
          not work (cf: 20160213).
        + the fixes for Redhat #1464685 obscured a problem subsequently
          reported in Redhat #1464687; the given test-case was no longer
          reproducible.  Testing without the fixes for the earlier reports
          showed a problem with buffer overflow in dump_entry.c, which is
          addressed by reducing the use of a fixed-size buffer.
        + add/improve checks in tic's parser to address invalid input
          (Redhat #1464684, #1464685, #1464686, #1464691).
          + alloc_entry.c, add a check for a null-pointer.
          + parse_entry.c, add several checks for valid pointers as well as
            one check to ensure that a single character on a line is not
            treated as the 2-character termcap short-name.
        + fix a memory leak in delscreen() (report by Bai Junq).
        + improve tracemunch, showing thread identifiers as names.
        + fix a use-after-free in NCursesMenu::~NCursesMenu()
        + further amend incorrect calls for memory-leaks from 20170617 changes
          (report by Allen Hewes).

20170624
        + modify c++/etip.h.in to accommodate deprecation of throw() and
          throws() in c++17 (prompted by patch by Romain Geissler).
        + remove some incorrect calls for memory-leaks from 20170617 changes
          (report by Allen Hewes).
        + add test-programs for termattrs and term_attrs.
        + modify _nc_outc_wrapper to use the standard output if the screen was
          not initialized, rather than returning an error.
        + improve checks for low-level terminfo functions when the terminal
          has not been initialized (Redhat #1345963).
        + modify make_hash to allow building with address-sanitizer,
          assuming that --disable-leaks is configured.
        + amend changes for number_format() in 20170506 to avoid undefined
          behavior when shifting (patch by Emanuele Giaquinta).

20170617
        + fill in some places where TERMTYPE2 vs TERMTYPE was not used
          (report by Allen Hewes).
        + use ExitTerminfo() internally in error-exits for ncurses' setupterm
          to help with leak checking.
        + use ExitProgram() in error-exit from initscr() to help with leak
          checking.
        + review test-programs, adding checks for cases where the terminal
          cannot be initialized.

20170610
        + add option "-xp" to picsmap.c, to use init_extended_pair().
        + make simple performance fixes for picsmap.c
        + improve aspect ratio of images read from "convert" in picsmap.c

20170603
        + add option to picsmap to use color-palette files, e.g., for mapping
          to xterm-256color.
        + move the data in SCREEN used for the alloc_pair() function to the
          end, to restore compatibility between ncurses/ncursesw libtinfo
          (report/patch by Miroslav Lichvar).
        + add build-time utility "report_offsets" to help show when the various
          configurations of tinfo library are compatible or not.

20170527
        + improved test/picsmap.c:
          + lookup named colors for xpm files in rgb.txt
          + accept blanks in color-keys for xpm files.
          + if neither xbm/xpm work, try "convert", which may be available.

20170520
        + modify test/picsmap.c to read xpm files.
        + modify package/debian/* to create documentation packages, so the
          related files can be checked with lintian.
        + fix some typos in manpages (report/patch by Sven Joachim).

20170513
        + add test/picsmap.c to fill in some testing issues not met by dots.
          The initial version reads X bitmap (".xbm") files.
        + repair logic which forces a repaint where a color-pair's content is
          changed (cf: 20170311).
        + improve tracemunch, showing screenXX pointers as names.

20170506
        + modify tic/infocmp display of numeric values to use hexadecimal when
          they are "close" to a power of two, making the result more readable.
        + improve discussion of portability in curs_mouse.3x
        + change line-length for generated html/manpages to 78 columns from 65.
        + improve discussion of line-drawing characters in curs_add_wch.3x
          (prompted by discussion with Lorinczy Zsigmond).
        + cleanup formatting of hackguide.html and ncurses-intro.html
        + add examples for WACS_D_PLUS and WACS_T_PLUS to test/ncurses.c

20170429
        + corrected a case where $with_gpm was set to "maybe" after CF_WITH_GPM,
          overlooked in 20160528 fixes (report by Alexandre Bury).
        + improve a couple of test-program's help-messages.
        + corrected loop in rain.c from 20170415 changes.
        + modify winnstr and winchnstr to return error if the output pointer is
          null, as well as adding a null pointer check of the window pointer
          for better compatibility with other implementations.
        + improve discussion of NetBSD curses in scr_dump.5
        + modify LIMIT_TYPED macro in new_pair.h to avoid changing sign of the
          value to be limited (reports by Darby Payne, Rob Boudreau).
        + update config.guess, config.sub from
                http://git.savannah.gnu.org/cgit/config.git

20170422
        + build-fix for termcap-configuration (report by Chi-Hsuan Yen).
        + improve terminfo manual page discussion of control- and graphics-
          characters.
        + remove tic warning about "^?" in string capabilities, which was
          marked as an extension (cf: 20000610, 20110820); however all Unix
          implementations support this and X/Open Curses does not address it.
          On the other hand, termcap never did support this feature.
        + correct missing comma-separator between string capabilities in
          icl6402 and m2-nam -TD
        + restore rmir/smir in ansi+idc to better match original ansiterm+idc,
          add alias ansiterm (report by Robert King).
        + amend an old check for ambiguous use of "ma" in terminfo versus
          a termcap use, if the capability is cancelled to treat it as number.
        + correct a case in _nc_captoinfo() which read "%%" and emitted "%".
        + modify sscanf calls in _nc_infotocap() for patterns "%{number}%+%c"
          and "%'char'%+%c" to check that the final character is really 'c',
          avoiding a case in icl6404 which cannot be converted to termcap.
        + in _nc_infotocap(), add a check to ensure that terminfo "^?" is not
          written to termcap, because the BSDs did not implement that.
        + in _nc_tic_expand() and _nc_infotocap(), improve string-length check
          when deciding whether to use "^X" or "\xxx" format for control
          characters, to make the output of tic/infocmp more predictable.
        + limit termcap "%d" width to 2 digits on input, and use "%2" in
          preference to "%02" on output.
        + correct terminfo/termcap conversion of "%02" and "%03" into "%2" and
          "%3"; the result repeated the last character.
        + add man/scr_dump.5 to document screen-dump format.

20170415
        + modify several test programs to use new popup_msgs, adapted from
          help-screen used in test/edit_field.c
        + drop two symbols obsoleted in 2004: _nc_check_termtype, and
          _nc_resolve_uses
        + fix some old copyright dates (cf: 20031025).
        + build-fixes for test/savescreen.c to work with AIX and HPUX.
        + minor fix to configure script, adding a backslash/continuation.
        + extend TERMINAL structure for ABI 6 to store numbers internally as
          integers rather than short, by adding new data for this purpose.
        + more fixes for minor memory-leaks in test-programs.

20170408
        + change logic in wins_nwstr() to avoid addressing data past the output
          of mbstowcs().
        + correct a call to setcchar() in Data_Entry_w() from 20131207 changes.
        + fix minor memory-leaks in test-programs.
        + further improve ifdef in term_entry.h for internal definitions not
          used by tack.

20170401
        + minor fixes for vt100+4bsd, e.g., delay in sgr for consistency -TD
        + add smso for env230, to match sgr -TD
        + remove p7/protect from sgr in fbterm -TD
        + drop setf/setb from fbterm; setaf/setab are enough -TD
        + make xterm-pcolor sgr consistent with other capabilities -TD
        + add rmxx/smxx ECMA-48 strikeout extension to tmux and xterm-basic
          (discussion with Nicholas Marriott)
        + add test-programs sp_tinfo and extended_color
        + modify no-leaks code for lib_cur_term.c to account for the tgetent()
          cache.
        + modify setupterm() to save original tty-modes so that erasechar()
          works as expected.  Also modify _nc_setupscreen() to avoid redundant
          calls to get original tty-modes.
        + modify set_curterm() to update ttytype[] data used by longname().
        + modify wattr_set() and wattr_get() to return ERR if win-parameter is
          null, as documented.
        + improve cast used for null-pointer checks in header macros, to
          reduce compiler warnings.
        + modify several functions, using the reserved "opts" parameter to pass
          color- and pair-values larger than 16-bits:
          + getcchar(), setcchar(), slk_attr_set(), vid_puts(), wattr_get(),
            wattr_set(), wchgat(), wcolor_set().
          + Other functions call these with the corresponding altered behavior,
            including chgat(), mvchgat(), mvwchgat(), slk_color_on(),
            slk_color_off(), vid_attr().
        + add new functions for manipulating color- and pair-values larger
          than 16-bits.  These are extended_color_content(),
          extended_pair_content(), extended_slk_color(), init_extended_color(),
          init_extended_pair(), and the corresponding sp-funcs.

20170325
        + fix a memory leak in the window-list when creating multiple screens
          (reports by Andres Martinelli, Debian #783486).
        + reviewed calls from link_test.c, added a few more null-pointer
          checks.
        + add a null-pointer check in ungetmouse, in case mousemask was not
          called (report by "Kau").
        + updated curs_sp_funcs.3x for new functions.

20170318
        + change TERMINAL structure in term.h to make it opaque.  Some
          applications misuse its members, e.g., directly modifying it
          rather than using def_prog_mode().
        + modify utility headers such as tic.h to make it clearer which are
          externals that are used by tack.
        + improve curs_slk.3x in particular its discussion of portability.
        + fix cut/paste in legacy_encoding.3x
        + add prototype for find_pair() to new_pair.3x (report by Branden
          Robinson).
        + fix a couple of broken links in generated man-html documentation.
        + regenerate man-html documentation.

20170311
        + modify vt100 rs2 string to reset vt52 mode and scrolling regions
          (report/analysis by Robert King) -TD
        + add vt100+4bsd building block, use that for older terminals rather
          than "vt100" which is now mostly used as a building block for
          terminal emulators -TD
        + correct a few spelling errors in terminfo.src comments -TD
        + add fbterm -TD
        + fix a typo in ncurses.c test_attr legend (patch by Petr Vanek).
        + changed internal colorpair_t to a struct, eliminating an internal
          8-bit limit on colors
        + add ncurses/new_pair.h
        + add ncurses/base/new_pair.c with alloc_pair(), find_pair() and
          free_pair() functions
        + add test/demo_new_pair.c

20170304
        + improve terminfo manual description of terminfo syntax.
        + clarify the use of wint_t vs wchar_t in curs_get_wstr.3x
        + improve description of endwin() in manual.
        + modify setcchar() and getcchar() to treat negative color-pair as an
          error.
        + fix a typo in include/hashed_db.h (Andre Sa).

20170225
        + fixes for CF_CC_ENV_FLAGS (report by Ross Burton).

20170218
        + fix several formatting issues with manual pages.
        + correct read of terminfo entry in which all strings are absent or
          explicitly cancelled.  Before this fix, the result was that all were
          treated as only absent.
        + modify infocmp to suppress mixture of absent/cancelled capabilities
          that would only show as "NULL, NULL", unless the -q option is used,
          e.g., to show "-, @" or "@, -".

20170212
        + build-fixes for PGI compilers (report by Adam J. Stewart)
          + accept whitespace in sed expression for generating expanded.c
          + modify configure check that g++ compiler warnings are not used.
          + add configure check for -fPIC option needed for shared libraries.
        + let configure --disable-ext-funcs override the default for the
          --enable-sp-funcs option.
        + mark some structs in form/menu/panel libraries as potentially opaque
          without modifying API/ABI.
        + add configure option --enable-opaque-curses for ncurses library and
          similar options for the other libraries.

20170204
        + trim newlines, tabs and escaped newlines from terminfo "paths" passed
          to db-iterator.
        + ignore zero-length files in db-iterator; these are useful for
          instance to suppress "$HOME/.terminfo" when not wanted.
        + amended "b64:" encoder to work with the terminfo reader.
        + modify terminfo reader to accept "b64:" format using RFC-3548 in
          as well as RFC-4648 url/filename-safe format.
        + modify terminfo reader to accept "hex:" format as generated by
          "infocmp -0qQ1" (cf: 20150905).
        + adjust authors comment to reflect drop below 1% for SV.

20170128
        + minor comment-fixes to help automate links to bug-urls -TD
        + add dvtm, dvtm-256color -TD
        + add settings corresponding to xterm-keys option to tmux entry to
          reflect upcoming change to make that option "on" by default
          (patch by Nicholas Marriott).
        + uncancel Ms in tmux entry (Harry Gindi, Nicholas Marriott).
        + add dumb-emacs-ansi -TD

20170121
        + improve discussion of early history of tput program.
        + incorporate A_COLOR mask into COLOR_PAIR(), in case user application
          provides an out-of-range pair number (report by Elijah Stone).
        + clarify description in tput manual page regarding support for
          termcap names (prompted by FreeBSD #214709).
        + remove a restriction in tput's support for termcap names which
          omitted capabilities normally not shown in termcap translations
          (cf: 990123).
        + modify configure script for clang as used on FreeBSD, to work around
          clang's differences in exit codes vs gcc.

20170114
        + improve discussion of early history of tset/reset programs.
        + clarify in manual pages that the optional verbose option level is
          available only when ncurses is configured for tracing.
        + amend change from 20161231 to avoid writing traces to the standard
          error after initializing the trace feature using the environment
          variable.

20170107
        + amend changes for tput to reset tty modes to "sane" if the program
          is run as "reset", like tset.  Likewise, ensure that tset sends
          either reset- or init-strings.
        + improve manual page descriptions of tput init/reset and tset/reset,
          to make it easier to see how they are similar and different.
        + move a static result from key_name() to _nc_globals
        + modify _nc_get_screensize to allow for use_env() and use_tioctl()
          state to be per-screen when sp-funcs are configured, better matching
          the behavior when using the term-driver configuration.
        + improve cross-references in manual pages for often used functions
        + move SCREEN field for use_tioctl() data before the ncursesw fields,
          and limit that to the sp-funcs configuration to improve termlib
          compatibility (cf:  20120714).
        + correct order of initialization for traces in use_env() and
          use_tioctl() versus first trace calls.

20161231
        + fix errata for ncurses-howto (report by Damien Ruscoe).
        + fix a few places in configure/build scripts where DESTDIR and rpath
          were combined (report by Thomas Klausner).
        + merge current st description (report by Harry Gindi) -TD
        + modify flash capability for linux and wyse entries to put the delay
          between the reverse/normal escapes rather than after -TD
        + modify program tabs to pass the actual tty file descriptor to
          setupterm rather than the standard output, making padding work
          consistently.
        + explain in clear's manual page that it writes to stdout.
        + add special case for verbose debugging traces of command-line
          utilities which write to stderr (cf: 20161126).
        + remove a trace with literal escapes from skip_DECSCNM(), added in
          20161203.
        + update config.guess, config.sub from
                http://git.savannah.gnu.org/cgit/config.git

20161224
        + correct parameters for copywin call in _nc_Synchronize_Attributes()
          (patch by Leon Winter).
        + improve color-handling section in terminfo manual page (prompted by
          patch by Mihail Konev).
        + modify programs clear, tput and tset to pass the actual tty file
          descriptor to setupterm rather than the standard output, making
          padding work.

20161217
        + add tput-colorcube demo script.
        + add -r and -s options to tput-initc demo, to match usage in xterm.
        + flush the standard output in _nc_flush for the case where SP is zero,
          e.g., when called via putp.  This fixes a scenario where "tput flash"
          did not work after changes in 20130112.

20161210
        + add configure script option --disable-wattr-macros for use in cases
          where one wants to use the same headers for ncurses5/ncurses6
          development, by suppressing the wattr* macros which differ due to
          the introduction of extended colors (prompted by comments in
          Debian #230990, Redhat #1270534).
        + add test/tput-initc to demonstrate tput used to initialize palette
          from a data file.
        + modify test/xterm*.dat to use the newer color4/color12 values.

20161203
        + improve discussion of field validation in form_driver.3x manual page.
        + update curs_trace.3x manual page.

20161126
        + modify linux-16color to not mask dim, standout or reverse with the
          ncv capability -TD
        + add 0.1sec mandatory delay to flash capabilities using the VT100
          reverse-video control -TD
        + omit selection of ISO-8859-1 for G0 in enacs capability from linux2.6
          entry, to avoid conflict with the user-defined mapping.  The reset
          feature will use ISO-8859-1 in any case (Mikulas Patocka).
        + improve check in tic for delays by also warning about beep/flash
          when a delay is not embedded, or if those use the VT100 reverse
          video escape without using a delay.
        + minor fix for syntax-check of delays from 20161119 changes.
        + modify trace() to avoid overwriting existing file (report by Maor
          Shwartz).

20161119
        + add check in tic for some syntax errors of delays, as well as use of
          proportional delays for non-line capabilities.
        + document history of the clear program and the E3 extension, prompted
          by various discussions including
          http://unix.stackexchange.com/questions/87469/clearing-the-old-scrollback-buffer

20161112
        + improve -W option in tic/infocmp:
          + correct order of size-adjustments in wrapped lines
          + if -f option splits line, do not further split it with -W
          + begin a new line when adding "use=" after a wrapped line

20161105
        + fix typo in man/terminfo.tail (Alain Williams).
        + correct program-name in adacurses6-config.1 manual page.

20161029
        + add new function "unfocus_current_field" (Leon Winter)

20161022
        + modify tset -w (and tput reset) to update the program's copy of the
          screensize if it was already set in the system, to improve tabstop
          setting which relies upon knowing the actual screensize.
        + add functionality of tset -w to tput, like the "-c" feature this is
          not optional in tput.
        + add "clear" as a possible link/alias to tput.
        + improve tput's check for being called as "init" or "reset" to allow
          for transformed names.
        + split-out the "clear" function from progs/clear.c, share with
          tput to get the same behavior, e.g., the E3 extension.

20161015
        + amend internal use of tputs to consistently use the number of lines
          affected, e.g., for insert/delete character operations.  While
          merging terminfo source early in 1995, several descriptions used the
          "*" proportional delay for these operations, prompting a change in
          doupdate.
        + regenerate llib-* files.
        + regenerate HTML manpages.
        + fix several formatting issues with manual pages.

20161008
        + adjust size in infocmp/tic to work with strlcpy.
        + fix configure script to record when strlcat is found on OpenBSD.
        + build-fix for "recent" OpenBSD vs baudrate.

20161001
        + add -W option to tic/infocmp to force long strings to wrap.  This is
          in addition to the -w option which attempts to fit capabilities into
          a given line-length.
        + add linux-m1 minitel entries (patch by Alexandre Montaron).
        + correct rs2 string for vt100-nam -TD

20160924
        + modify _nc_tic_expand to escape comma if it immediately follows a
          percent sign, to work with minitel change.
        + updated minitel and viewdata descriptions (Alexandre Montaron).

20160917
        + build-fix for gnat6, which unhelpfully attempts to compile C files.
        + fix typo in 20160910 changes (Debian #837892, patch by Sven Joachim).

20160910
        + trim dead code ifdef'd with HIDE_EINTR since 970830 (discussion with
          Leon Winter).
        + trim some obsolete/incorrect wording about EINTR from wgetch manual
          page (patch by Leon Winter).
        + really correct 20100515 change (patch by Rich Coe).
        + add "--enable-string-hacks" option to test/configure
        + completed string-hacks for "sprintf", etc., including test-programs.
        + make "--enable-string-hacks" work with Debian by checking for the
          "bsd" library and its associated "<bsd/string.h>" header.

20160903
        + correct 20100515 change for weak signals versus sigprocmask (report
          by Rich Coe).
        + modify misc/Makefile.in to work around OpenBSD "make" which unlike
          all other versions of "make" does not recognize continuation lines
          of comments.
        + amend the last change to CF_C_ENV_FLAGS to move only the
          preprocessor, optimization and warning flags to CPPFLAGS and CFLAGS,
          leaving the residue in CC.  That happens to work for gcc's various
          "model" options, but may require tuning for other compilers (report
          by Sven Joachim).

20160827
        + add "v" menu entry to test/ncurses.c to show baudrate and other
          values.
        + add "newer" baudrate symbols from Linux and FreeBSD to progs/tset.c,
          lib_baudrate.c
        + modify CF_XOPEN_SOURCE macro:
          + add "uclinux" to case for "linux" (patch by Yann E. Morin)
          + modify _GNU_SOURCE for cygwin headers, tested with cygwin 2.3, 2.5
            (patch by Corinna Vinschen, from changes to tin).
        + improve CF_CC_ENV_FLAGS macro to allow for compiler wrappers such
          as "ccache" (report by Enrico Scholz).
        + update config.guess, config.sub from
                http://git.savannah.gnu.org/cgit/config.git

20160820
        + update tput manual page to reflect changes to manipulate terminal
          modes by sharing functions with tset.
        + add the terminal-mode parts of "reset" (aka tset) to the "tput reset"
          command, making the two almost the same except for window-size.
        + adapt logic used in dialog "--keep-tite" option for test/filter.c as
          "-a" option.  When set, test/filter attempts to suppress the
          alternate screen.
        + correct a typo in interix entry -TD

20160813
        + add a dependency upon generated-sources in Ada95/src/Makefile.in to
          handle a case of "configure && make install".
        + trim trailing blanks from include/Caps*, to work around a problem
          in sed (Debian #818067).

20160806
        + improve CF_GNU_SOURCE configure macro to optionally define
          _DEFAULT_SOURCE work around a nuisance in recent glibc releases.
        + move the terminfo-specific parts of tput's "reset" function into
          the shared reset_cmd.c, making the two forms of reset use the same
          strings.
        + split-out the terminal initialization functions from tset as
          progs/reset_cmd.c, as part of changes to merge the reset-feature
          with tput.

20160730
        + change tset's initialization to allow it to get settings from the
          standard input as well as /dev/tty, to be more effective when
          output or error are redirected.
        + improve discussion of history and portability for tset/reset/tput
          manual pages.

20160723
        + improve error message from tset/reset when both stderr/stdout are
          redirected to a file or pipe.
        + improve organization of curs_attr.3x, curs_color.3x

20160709
        + work around Debian's antique/unmaintained version of mawk when
          building link_test.
        + improve test/list_keys.c, showing ncurses's convention of modifiers
          for special keys, based on xterm.

20160702
        + improve test/list_keys.c, using $TERM if no parameters are given.

20160625
        + build-fixes for ncurses "test_progs" rule.
        + amend change to CF_CC_ENV_FLAGS in 20160521 to make multilib build
          work (report by Sven Joachim).

20160618
        + build-fixes for ncurses-examples with NetBSD curses.
        + improve test/list_keys.c, fixing column-widths and sorting the list
          to make it more readable.

20160611
        + revise fix for Debian #805618 (report by Vlado Potisk, cf: 20151128).
        + modify test/ncurses.c a/A screens to make exiting on an escape
          character depend on the start of keypad and timeout modes, to allow
          better testing of function-keys.
        + modify rs1 for xterm-16color, xterm-88color and xterm-256color to
          reset palette using "oc" string as in linux -TD
        + use ANSI reply for u8 in xterm-new, to reflect vt220-style responses
          that could be returned -TD
        + added a few capabilities fixed in recent vte -TD

20160604
        + correct logic for -f option in test/demo_terminfo.c
        + add test/list_keys.c

20160528
        + further workaround for PIE/PIC breakage which causes gpm to not link.
        + fix most cppcheck warnings, mostly style, in ncurses library.

20160521
        + improved manual page description of tset/reset versus window-size.
        + fixes to work with a slightly broken compiler configuration which
          cannot compile "Hello World!" without adding compiler options
          (report by Ola x Nilsson):
          + pass appropriate compiler options to the CF_PROG_CC_C_O macro.
          + when separating compiler and options in CF_CC_ENV_FLAGS, ensure
            that all options are split-off into CFLAGS or CPPFLAGS
          + restore some -I options removed in 20140726 because they appeared
            to be redundant.  In fact, they are needed for a compiler that
            cannot combine -c and -o options.

20160514
        + regenerate HTML manpages.
        + improve manual pages for wgetch and wget_wch to point out that they
          might return values without names in curses.h (Debian #822426).
        + make linux3.0 entry the default linux entry (Debian #823658) -TD
        + modify linux2.6 entry to improve line-drawing so that the linux3.0
          entry can be used in non-UTF-8 mode -TD
        + document return value of use_extended_names (report by Mike Gran).

20160507
        + amend change to _nc_do_color to restore the early return for the
          special case used in _nc_screen_wrap (report by Dick Streefland,
          cf: 20151017).
        + modify test/ncurses.c:
          + check return-value of putwin
          + correct ifdef which made the 'g' test's legend not reflect changes
            to keypad- and scroll-modes.
        + correct return-value of extended putwin (report by Mike Gran).

20160423
        + modify test/ncurses.c 'd' edit-color menu to optionally read xterm
          color palette directly from terminal, as well as handling KEY_RESIZE
          and screen-repainting with control/L and control/R.
        + add 'oc' capability to xterm+256color, allowing palette reset for
          xterm -TD

20160416
        + add workaround in configure script for inept transition to PIE vs
          PIC builds documented in
                  https://fedoraproject.org/wiki/Changes/Harden_All_Packages
        + add "reset" to list of programs whose names might change in manpages
          due to program-transformation configure options.
        + drop long-obsolete "-n" option from tset.

20160409
        + modify test/blue.c to use Unicode values for card-glyphs when
          available, as well as improving the check for CP437 and CP850.

20160402
        + regenerate HTML manpages.
        + improve manual pages for utilities with respect to POSIX versus
          X/Open Curses.

20160326
        + regenerate HTML manpages.
        + improve test/demo_menus.c, allowing mouse-click on the menu-headers
          to switch the active menu.  This requires a new extension option
          O_MOUSE_MENU to tell the menu driver to put mouse events which do not
          apply to the active menu back into the queue so that the application
          can handle the event.

20160319
        + improve description of tgoto parameters (report by Steffen Nurpmeso).
        + amend workaround for Solaris line-drawing to restore a special case
          that maps Unicode line-drawing characters into the acsc string for
          non-Unicode locales (Debian #816888).

20160312
        + modified test/filter.c to illustrate an alternative to getnstr, that
          polls for input while updating a clock on the right margin as well
          as responding to window size-changes.

20160305
        + omit a redefinition of "inline" when traces are enabled, since this
          does not work with gcc 5.3.x MinGW cross-compiling (cf: 20150912).

20160220
        + modify test/configure script to check for pthread dependency of
          ncursest or ncursestw library when building ncurses examples, e.g.,
          in case weak symbols are used.
        + modify configure macro for shared-library rules to use -Wl,-rpath
          rather than -rpath to work around a bug in scons (FreeBSD #178732,
          cf: 20061021).
        + double-width multibyte characters were not counted properly in
          winsnstr and wins_nwstr (report/example by Eric Pruitt).
        + update config.guess, config.sub from
                http://git.savannah.gnu.org/cgit/config.git

20160213
        + amend fix for _nc_ripoffline from 20091031 to make test/ditto.c work
          in threaded configuration.
        + move _nc_tracebits, _tracedump and _tracemouse to curses.priv.h,
          since they are not part of the suggested ABI6.

20160206
        + define WIN32_LEAN_AND_MEAN for MinGW port, making builds faster.
        + modify test/ditto.c to allow $XTERM_PROG environment variable to
          override "xterm" as the name of the program to run in the threaded
          configuration.

20160130
        + improve formatting of man/curs_refresh.3x and man/tset.1 manpages
        + regenerate HTML manpages using newer man2html to eliminate some
          unwanted blank lines.

20160123
        + ifdef'd header-file definition of mouse_trafo() with NCURSES_NOMACROS
          (report by Corey Minyard).
        + fix some strict compiler-warnings in traces.

20160116
        + tidy up comments about hardcoded 256color palette (report by
          Leonardo Brondani Schenkel) -TD
        + add putty-noapp entry, and amend putty entry to use application mode
          for better consistency with xterm (report by Leonardo Brondani
          Schenkel) -TD
        + modify _nc_viscbuf2() and _tracecchar_t2() to trace wide-characters
          as a whole rather than their multibyte equivalents.
        + minor fix in wadd_wchnstr() to ensure that each cell has nonzero
          width.
        + move PUTC_INIT calls next to wcrtomb calls, to avoid carry-over of
          error status when processing Unicode values which are not mapped.

20160102
        + modify ncurses c/C color test-screens to take advantage of wide
          screens, reducing the number of lines used for 88- and 256-colors.
        + minor refinement to check versus ncv to ignore two parameters of
          SGR 38 and 48 when those come from color-capabilities.

20151226
        + add check in tic for use of bold, etc., video attributes in the
          color capabilities, accounting whether the feature is listed in ncv.
        + add check in tic for conflict between ritm, rmso, rmul versus sgr0.

20151219
        + add a paragraph to curs_getch.3x discussing key naming (discussion
          with James Crippen).
        + amend workaround for Solaris vs line-drawing to take the configure
          check into account.
        + add a configure check for wcwidth() versus the ncurses line-drawing
          characters, to use in special-casing systems such as Solaris.

20151212
        + improve CF_XOPEN_CURSES macro used in test/configure, to define as
          needed NCURSES_WIDECHAR for platforms where _XOPEN_SOURCE_EXTENDED
          does not work.  Also modified the test program to ensure that if
          building with ncurses, that the cchar_t type is checked, since that
          normally is since 20111030 ifdef'd depending on this test.
        + improve 20121222 workaround for broken acs, letting Solaris "work"
          in spite of its misconfigured wcwidth which marks all of the line
          drawing characters as double-width.

20151205
        + update form_cursor.3x, form_post.3x, menu_attributes.3x to list
          function names in NAME section (patch by Jason McIntyre).
        + minor fixes to manpage NAME/SYNOPSIS sections to consistently use
          rule that either all functions which are prototyped in SYNOPSIS are
          listed in the NAME section, or the manual-page name is the sole item
          listed in the NAME section.  The latter is used to reduce clutter,
          e.g., for the top-level library manual pages as well as for certain
          feature-pages such as SP-funcs and threading (prompted by patches by
          Jason McIntyre).

20151128
        + add option to preserve leading whitespace in form fields (patch by
          Leon Winter).
        + add missing assignment in lib_getch.c to make notimeout() work
          (Debian #805618).
        + add 't' toggle for notimeout() function in test/ncurses.c a/A screens
        + add viewdata terminal description (Alexandre Montaron).
        + fix a case in tic/infocmp for formatting capabilities where a
          backslash at the end of a string was mishandled.
        + fix some typos in curs_inopts.3x (Benno Schulenberg).

20151121
        + fix some inconsistencies in the pccon* entries -TD
        + add bold to pccon+sgr+acs and pccon-base (Tati Chevron).
        + add keys f12-f124 to pccon+keys (Tati Chevron).
        + add test/test_sgr.c program to exercise all combinations of sgr.

20151107
        + modify tset's assignment to TERM in its output to reflect the name by
          which the terminal description is found, rather than the primary
          name.  That was an unnecessary part from the initial conversion of
          tset from termcap to terminfo.  The termcap program in 4.3BSD did
          this to avoid using the short 2-character name (report by Rich
          Burridge).
        + minor fix to configure script to ensure that rules for resulting.map
          are only generated when needed (cf: 20151101).
        + modify configure script to handle the case where tic-library is
          renamed, but the --with-debug option is used by itself without
          normal or shared libraries (prompted by comment in Debian #803482).

20151101
        + amend change for pkg-config which allows build of pc-files when no
          valid pkg-config library directory was configured to suppress the
          actual install if it is not overridden to a valid directory at
          install time (cf: 20150822).
        + modify editing script which generates resulting.map to work with the
          clang configuration on recent FreeBSD, which gives an error on an
          empty "local" section.
        + fix a spurious "(Part)" message in test/ncurses.c b/B tests due
          to incorrect attribute-masking.

20151024
        + modify MKexpanded.sh to update the expansion of a temporary filename
          to "expanded.c", for use in trace statements.
        + modify layout of b/B tests in test/ncurses.c to allow for additional
          annotation on the right margin; some terminals with partial support
          did not display well.
        + fix typo in curs_attr.3x (patch by Sven Joachim).
        + fix typo in INSTALL (patch by Tomas Cech).
        + improve configure check for setting WILDCARD_SYMS variable; on ppc64
          the variable is in the Data section rather than Text (patch by Michel
          Normand, Novell #946048).
        + using configure option "--without-fallbacks" incorrectly caused
          FALLBACK_LIST to be set to "no" (patch by Tomas Cech).
        + updated minitel entries to fix kel problem with emacs, and add
          minitel1b-nb (Alexandre Montaron).
        + reviewed/updated nsterm entry Terminal.app in OSX -TD
        + replace some dead URLs in comments with equivalents from the
          Internet Archive -TD
        + update config.guess, config.sub from
                http://git.savannah.gnu.org/cgit/config.git

20151017
        + modify ncurses/Makefile.in to sort keys.list in POSIX locale
          (Debian #801864, patch by Esa Peuha).
        + remove an early-return from _nc_do_color, which can interfere with
          data needed by bkgd when ncurses is configured with extended colors
          (patch by Denis Tikhomirov).
        > fixes for OS/2 (patches by KO Myung-Hun)
        + use button instead of kbuf[0] in EMX-specific part of lib_mouse.c
        + support building with libtool on OS/2
        + use stdc++ on OS/2 kLIBC
        + clear cf_XOPEN_SOURCE on OS/2

20151010
        + add configure check for openpty to test/configure script, for ditto.
        + minor fixes to test/view.c in investigating Debian #790847.
        + update autoconf patch to 2.52.20150926, incorporates a fix for Cdk.
        + add workaround for breakage of POSIX makefiles by recent binutils
          change.
        + improve check for working poll() by using posix_openpt() as a
          fallback in case there is no valid terminal on the standard input
          (prompted by discussion on bug-ncurses mailing list, Debian #676461).

20150926
        + change makefile rule for removing resulting.map to distclean rather
          than clean.
        + add /lib/terminfo to terminfo-dirs in ".deb" test-package.
        + add note on portability of resizeterm and wresize to manual pages.

20150919
        + clarify in resizeterm.3x how KEY_RESIZE is pushed onto the input
          stream.
        + clarify in curs_getch.3x that the keypad mode affects ability to
          read KEY_MOUSE codes, but does not affect KEY_RESIZE.
        + add overlooked build-fix needed with Cygwin for separate Ada95
          configure script, cf: 20150606 (report by Nicolas Boulenguez)

20150912
        + fixes for configure/build using clang on OSX (prompted by report by
          William Gallafent).
          + do not redefine "inline" in ncurses_cfg.h; this was originally to
            solve a problem with gcc/g++, but is aggravated by clang's misuse
            of symbols to pretend it is gcc.
          + add braces to configure script to prevent unwanted add of
            "-lstdc++" to the CXXLIBS symbol.
          + improve/update test-program used for checking existence of stdc++
            library.
          + if $CXXLIBS is set, the linkage test uses that in addition to $LIBS

20150905
        + add note in curs_addch.3x about line-drawing when it depends upon
          UTF-8.
        + add tic -q option for consistency with infocmp, use it to suppress
          all comments from the "tic -I" output.
        + modify infocmp -q option to suppress the "Reconstructed from"
          header.
        + add infocmp/tic -Q option, which allows one to dump the compiled
          form of the terminal entry, in hexadecimal or base64.

20150822
        + sort options in usage message for infocmp, to make it simpler to
          see unused letters.
        + update usage message for tic, adding "-0" option.
        + documented differences in ESCDELAY versus AIX's implementation.
        + fix some compiler warnings from ports.
        + modify --with-pkg-config-libdir option to make it possible to install
          ".pc" files even if pkg-config is not found (adapted from patch by
          Joshua Root).

20150815
        + disallow "no" as a possible value for "--with-shlib-version" option,
          overlooked in cleanup-changes for 20000708 (report by Tommy Alex).
        + update release notes in INSTALL.
        + regenerate llib-* files to help with review for release notes.

20150810
        + workaround for Debian #65617, which was fixed in mawk's upstream
          releases in 2009 (report by Sven Joachim).  See
                https://invisible-island.net/mawk/CHANGES.html#t20090727

20150808 6.0 release for upload to ftp.gnu.org

20150808
        + build-fix for Ada95 on older platforms without stdint.h
        + build-fix for Solaris, whose /bin/sh and /usr/bin/sed are non-POSIX.
        + update release announcement, summarizing more than 800 changes across
          more than 200 snapshots.
        + minor fixes to manpages, etc., to simplify linking from announcement
          page.

20150725
        + updated llib-* files.
        + build-fixes for ncurses library "test_progs" rule.
        + use alternate workaround for gcc 5.x feature (adapted from patch by
          Mikhail Peselnik).
        + add status line to tmux via xterm+sl (patch by Nicholas Marriott).
        + fixes for st 0.5 from testing with tack -TD
        + review/improve several manual pages to break up wall-of-text:
          curs_add_wch.3x, curs_attr.3x, curs_bkgd.3x, curs_bkgrnd.3x,
          curs_getcchar.3x, curs_getch.3x, curs_kernel.3x, curs_mouse.3x,
          curs_outopts.3x, curs_overlay.3x, curs_pad.3x, curs_termattrs.3x
          curs_trace.3x, and curs_window.3x

20150719
        + correct an old logic error for %A and %O in tparm (report by "zreed").
        + improve documentation for signal handlers by adding section in the
          curs_initscr.3x page.
        + modify logic in make_keys.c to not assume anything about the size
          of strnames and strfnames variables, since those may be functions
          in the thread- or broken-linker configurations (problem found by
          Coverity).
        + modify test/configure script to check for pthreads configuration,
          e.g., ncursestw library.

20150711
        + modify scripts to build/use test-packages for the pthreads
          configuration of ncurses6.
        + add references to ttytype and termcap symbols in demo_terminfo.c and
          demo_termcap.c to ensure that when building ncursest.map, etc., that
          the corresponding names such as _nc_ttytype are added to the list of
          versioned symbols (report by Werner Fink)
        + fix regression from 20150704 (report/patch by Werner Fink).

20150704
        + fix a few problems reported by Coverity.
        + fix comparison against "/usr/include" in misc/gen-pkgconfig.in
          (report by Daiki Ueno, Debian #790548, cf:  20141213).

20150627
        + modify configure script to remove deprecated ABI 5 symbols when
          building ABI 6.
        + add symbols _nc_Default_Field, _nc_Default_Form, _nc_has_mouse to
          map-files, but marked as deprecated so that they can easily be
          suppressed from ABI 6 builds (Debian #788610).
        + comment-out "screen.xterm" entry, and inherit screen.xterm-256color
          from xterm-new (report by Richard Birkett) -TD
        + modify read_entry.c to set the error-return to -1 if no terminal
          databases were found, as documented for setupterm.
        + add test_setupterm.c to demonstrate normal/error returns from the
          setupterm and restartterm functions.
        + amend cleanup change from 20110813 which removed redundant definition
          of ret_error, etc., from tinfo_driver.c, to account for the fact that
          it should return a bool rather than int (report/analysis by Johannes
          Schindelin).

20150613
        + fix overflow warning for OSX with lib_baudrate.c (cf: 20010630).
        + modify script used to generate map/sym files to mark 5.9.20150530 as
          the last "5.9" version, and regenerated the files.  That makes the
          files not use ".current" for the post-5.9 symbols.  This also
          corrects the label for _nc_sigprocmask used in when weak symbols are
          configured for the ncursest/ncursestw libraries (prompted by
          discussion with Sven Joachim).
        + fix typo in NEWS (report by Sven Joachim).

20150606 pre-release
        + make ABI 6 the default by updates to dist.mk and VERSION, with the
          intention that the existing ABI 5 should build as before using the
          "--with-abi-version=5" option.
        + regenerate ada- and man-html documentation.
        + minor fixes to color- and util-manpages.
        + fix a regression in Ada95/gen/Makefile.in, to handle special case of
          Cygwin, which uses the broken-linker feature.
        + amend fix for CF_NCURSES_CONFIG used in test/configure to assume that
          ncurses package scripts work when present for cross-compiling, as the
          lessor of two evils (cf: 20150530).
        + add check in configure script to disallow conflicting options
          "--with-termlib" and "--enable-term-driver".
        + move defaults for "--disable-lp64" and "--with-versioned-syms" into
          CF_ABI_DEFAULTS macro.

20150530
        + change private type for Event_Mask in Ada95 binding to work when
          mmask_t is set to 32-bits.
        + remove spurious "%;" from st entry (report by Daniel Pitts) -TD
        + add vte-2014, update vte to use that -TD
        + modify tic and infocmp to "move" a diagnostic for tparm strings that
          have a syntax error to tic's "-c" option (report by Daniel Pitts).
        + fix two problems with configure script macros (Debian #786436,
          cf: 20150425, cf: 20100529).

20150523
        + add 'P' menu item to test/ncurses.c, to show pad in color.
        + improve discussion in curs_color.3x about color rendering (prompted
          by comment on Stack Overflow forum):
        + remove screen-bce.mlterm, since mlterm does not do "bce" -TD
        + add several screen.XXX entries to support the respective variations
          for 256 colors -TD
        + add putty+fnkeys* building-block entries -TD
        + add smkx/rmkx to capabilities analyzed with infocmp "-i" option.

20150516
        + amend change to ".pc" files to only use the extra loader flags which
          may have rpath options (report by Sven Joachim, cf: 20150502).
        + change versioning for dpkg's in test-packages for Ada95 and
          ncurses-examples for consistency with Debian, to work with package
          updates.
        + regenerate html manpages.
        + clarify handling of carriage return in waddch manual page; it was
          discussed only in the portability section (prompted by comment on
          Stack Overflow forum):

20150509
        + add test-packages for cross-compiling ncurses-examples using the
          MinGW test-packages.  These are only the Debian packages; RPM later.
        + cleanup format of debian/copyright files
        + add pc-files to the MinGW cross-compiling test-packages.
        + correct a couple of places in gen-pkgconfig.in to handle renaming of
          the tinfo library.

20150502
        + modify the configure script to allow different default values
          for ABI 5 versus ABI 6.
        + add wgetch-events to test-packages.
        + add a note on how to build ncurses-examples to test/README.
        + fix a memory leak in delscreen (report by Daniel Kahn Gillmor,
          Debian #783486) -TD
        + remove unnecessary ';' from E3 capabilities -TD
        + add tmux entry, derived from screen (patch by Nicholas Marriott).
        + split-out recent change to nsterm-bce as nsterm-build326, and add
          nsterm-build342 to reflect changes with successive releases of OSX
          (discussion with Leonardo B Schenkel)
        + add xon, ich1, il1 to ibm3161 (patch by Stephen Powell, Debian
          #783806)
        + add sample "magic" file, to document ext-putwin.
        + modify gen-pkgconfig.in to add explicit -ltinfo, etc., to the
          generated ".pc" file when ld option "--as-needed" is used, or when
          ncurses and tinfo are installed without using rpath (prompted by
          discussion with Sylvain Bertrand).
        + modify test-package for ncurses6 to omit rpath feature when installed
          in /usr.
        + add OSX's "*.dSYM" to clean-rules in makefiles.
        + make extra-suffix work for OSX configuration, e.g., for shared
          libraries.
        + modify Ada95/configure script to work with pkg-config
        + move test-package for ncurses6 to /usr, since filename-conflicts have
          been eliminated.
        + corrected build rules for Ada95/gen/generate; it does not depend on
          the ncurses library aside from headers.
        + reviewed man pages, fixed a few other spelling errors.
        + fix a typo in curs_util.3x (Sven Joachim).
        + use extra-suffix in some overlooked shared library dependencies
          found by 20150425 changes for test-packages.
        + update config.guess, config.sub from
                http://git.savannah.gnu.org/cgit/config.git

20150425
        + expanded description of tgetstr's area pointer in manual page
          (report by Todd M Lewis).
        + in-progress changes to modify test-packages to use ncursesw6 rather
          than ncursesw, with updated configure scripts.
        + modify CF_NCURSES_CONFIG in Ada95- and test-configure scripts to
          check for ".pc" files via pkg-config, but add a linkage check since
          frequently pkg-config configurations are broken.
        + modify misc/gen-pkgconfig.in to include EXTRA_LDFLAGS, e.g., for the
          rpath option.
        + add 'dim' capability to screen entry (report by Leonardo B Schenkel)
        + add several key definitions to nsterm-bce to match preconfigured
          keys, e.g., with OSX 10.9 and 10.10 (report by Leonardo B Schenkel)
        + fix repeated "extra-suffix" in ncurses-config.in (cf: 20150418).
        + improve term_variables manual page, adding section on the terminfo
          long-name symbols which are defined in the term.h header.
        + fix bug in lib_tracebits.c introduced in const-fixes (cf: 20150404).

20150418
        + avoid a blank line in output from tabs program by ending it with
          a carriage return as done in FreeBSD (patch by James Clarke).
        + build-fix for the "--enable-ext-putwin" feature when not using
          wide characters (report by Werner Fink).
        + modify autoconf macros to use scripting improvement from xterm.
        + add -brtl option to compiler options on AIX 5-7, needed to link
          with the shared libraries.
        + add --with-extra-suffix option to help with installing nonconflicting
          ncurses6 packages, e.g., avoiding header- and library-conflicts.
          NOTE: as a side-effect, this renames
                  adacurses-config to adacurses5-config and
                  adacursesw-config to adacursesw5-config
        + modify debian/rules test package to suffix programs with "6".
        + clarify in curs_inopts.3x that window-specific settings do not
          inherit into new windows.

20150404
        + improve description of start_color() in the manual.
        + modify several files in ncurses- and progs-directories to allow
          const data used in internal tables to be put by the linker into the
          readonly text segment.

20150329
        + correct cut/paste error for "--enable-ext-putwin" that made it the
          same as "--enable-ext-colors" (report by Roumen Petrov)

20150328
        + add "-f" option to test/savescreen.c to help with testing/debugging
          the extended putwin/getwin.
        + add logic for writing/reading combining characters in the extended
          putwin/getwin.
        + add "--enable-ext-putwin" configure option to turn on the extended
          putwin/getwin.

20150321
        + in-progress changes to provide an extended version of putwin and
          getwin which will be capable of reading screen-dumps between the
          wide/normal ncurses configurations.  These are text files, except
          for a magic code at the beginning:
          0       string          \210\210        Screen-dump (ncurses)

20150307
        + document limitations of getwin in manual page (prompted by discussion
          with John S Urban).
        + extend test/savescreen.c to demonstrate that color pair values
          and graphic characters can be restored using getwin.

20150228
        + modify win_driver.c to eliminate the constructor, to make it more
          usable in an application which may/may not need the console window
          (report by Grady Martin).

20150221
        + capture define's related to -D_XOPEN_SOURCE from the configure check
          and add those to the *-config and *.pc files, to simplify use for
          the wide-character libraries.
        + modify ncurses.spec to accommodate Fedora21's location of pkg-config
          directory.
        + correct sense of "--disable-lib-suffixes" configure option (report
          by Nicolas Boos, cf: 20140426).

20150214
        + regenerate html manpages using improved man2html from work on xterm.
        + regenerated ".map" and ".sym" files using improved script, accounting
          for the "--enable-weak-symbols" configure option (report by Werner
          Fink).

20150131
        + regenerated ".map" and ".sym" files using improved script, showing
          the combinations of configure options used at each stage.

20150124
        + add configure check to determine if "local: _*;" can be used in the
          ".map" files to selectively omit symbols beginning with "_".  On at
          least recent FreeBSD, the wildcard applies to all "_" symbols.
        + remove obsolete/conflicting rule for ncurses.map from
          ncurses/Makefile.in (cf:  20130706).

20150117
        + improve description in INSTALL of the --with-versioned-syms option.
        + add combination of --with-hashed-db and --with-ticlib to
          configurations for ".map" files (report by Werner Fink).

20150110
        + add a step to generating ".map" files, to declare any remaining
          symbols beginning with "_" as local, at the last version node.
        + improve configure checks for pkg-config, addressing a variant found
          with FreeBSD ports.
        + modify win_driver.c to provide characters for special keys, like
          ansi.sys, when keypad mode is off, rather than returning nothing at
          all (discussion with Eli Zaretskii).
        + add "broken_linker" and "hashed-db" configure options to combinations
          use for generating the ".map" and ".sym" files.
        + avoid using "ld" directly when creating shared library, to simplify
          cross-compiles.  Also drop "-Bsharable" option from shared-library
          rules for FreeBSD and DragonFly (FreeBSD #196592).
        + fix a memory leak in form library Free_RegularExpression_Type()
          (report by Pavel Balaev).

20150103
        + modify_nc_flush() to retry if interrupted (patch by Stian Skjelstad).
        + change map files to make _nc_freeall a global, since it may be used
          via the Ada95 binding when checking for memory leaks.
        + improve sed script used in 20141220 to account for wide-, threaded-
          variations in ABI 6.

20141227
        + regenerate ".map" files, using step overlooked in 20141213 to use
          the same patch-dates across each file to match ncurses.map (report by
          Sven Joachim).

20141221
        + fix an incorrect variable assignment in 20141220 changes (report by
          Sven Joachim).

20141220
        + updated Ada95/configure with macro changes from 20141213
        + tie configure options --with-abi-version and --with-versioned-syms
          together, so that ABI 6 libraries have distinct symbol versions from
          the ABI 5 libraries.
        + replace obsolete/nonworking link to man2html with current one,
          regenerate html-manpages.

20141213
        + modify misc/gen-pkgconfig.in to add -I option for include-directory
          when using both --prefix and --disable-overwrite (report by Misty
          De Meo).
        + add configure option --with-pc-suffix to allow minor renaming of
          ".pc" files and the corresponding library.  Use this in the test
          package for ncurses6.
        + modify configure script so that if pkg-config is not installed, it
          is still possible to install ".pc" files (report by Misty De Meo).
        + updated ".sym" files, removing symbols which are marked as "local"
          in the corresponding ".map" files.
        + updated ".map" files to reflect move of comp_captab and comp_hash
          from tic-library to tinfo-library in 20090711 (report by Sven
          Joachim).

20141206
        + updated ".map" files so that each symbol that may be shared across
          the different library configurations has the same label.  Some
          review is needed to ensure these are really compatible.
        + modify MKlib_gen.sh to work around change in development version of
          gcc introduced here:
                  https://gcc.gnu.org/ml/gcc-patches/2014-06/msg02185.html
                  https://gcc.gnu.org/ml/gcc-patches/2014-07/msg00236.html
          (reports by Marcus Shawcroft, Maohui Lei).
        + improved configure macro CF_SUBDIR_PATH, from lynx changes.

20141129
        + improved ".map" files by generating them with a script that builds
          ncurses with several related configurations and merges the results.
          A further refinement is planned, to make the tic- and tinfo-library
          symbols use the same versions across each of the four configurations
          which are represented (reports by Sven Joachim, Werner Fink).

20141115
        + improve description of limits for color values and color pairs in
          curs_color.3x (prompted by patch by Tim van der Molen).
        + add VERSION file, using first field in that to record the ABI version
          used for configure --with-libtool --disable-libtool-version
        + add configure options for applying the ".map" and ".sym" files to
          the ncurses, form, menu and panel libraries.
        + add ".map" and ".sym" files to show exported symbols, e.g., for
          symbol-versioning.

20141101
        + improve strict compiler-warnings by adding a cast in TRACE_RETURN
          and making a new TRACE_RETURN1 macro for cases where the cast does
          not apply.

20141025
        + in-progress changes to integrate the win32 console driver with the
          msys2 configuration.

20141018
        + reviewed terminology 0.6.1, add function key definitions.  None of
          the vt100-compatibility issues were improved -TD
        + improve infocmp conversion of extended capabilities to termcap by
          correcting the limit check against parametrized[], as well as filling
          in a check if the string happens to have parameters, e.g., "xm"
          in recent changes.
        + add check for zero/negative dimensions for resizeterm and resize_term
          (report by Mike Gran).

20141011
        + add experimental support for xterm's 1005 mouse mode, to use in a
          demonstration of its limitations.
        + add experimental support for "%u" format to terminfo.
        + modify test/ncurses.c to also show position reports in 'a' test.
        + minor formatting fixes to _nc_trace_mmask_t, make this function
          exported to help with debugging mouse changes.
        + improve behavior of wheel-mice for xterm protocol, noting that there
          are only button-presses for buttons "4" and "5", so there is no need
          to wait to combine events into double-clicks (report/analysis by
          Greg Field).
        + provide examples xterm-1005 and xterm-1006 terminfo entries -TD
        + implement decoder for xterm SGR 1006 mouse mode.

20140927
        + implement curs_set in win_driver.c
        + implement flash in win_driver.c
        + fix an infinite loop in win_driver.c if the command-window loses
          focus.
        + improve the non-buffered mode, i.e., NCURSES_CONSOLE2, of
          win_driver.c by temporarily changing the buffer-size to match the
          window-size to eliminate the scrollback.  Also enforce a minimum
          screen-size of 24x80 in the non-buffered mode.
        + modify generated misc/Makefile to suppress install.data from the
          dependencies if the --disable-db-install option is used, compensating
          for the top-level makefile changes used to add ncurses*-config in the
          20140920 changes (report by Steven Honeyman).

20140920
        + add ncurses*-config to bin-directory of sample package-scripts.
        + add check to ensure that getopt is available; this is a problem in
          some older cross-compiler environments.
        + expanded on the description of --disable-overwrite in INSTALL
          (prompted by reports by Joakim Tjernlund, Thomas Klausner).
          See Gentoo #522586 and NetBSD #49200 for examples.
          which relates to the clarified guidelines.
        + remove special logic from CF_INCLUDE_DIRS which adds the directory
          for the --includedir from the build (report by Joakim Tjernlund).
        + add case for Unixware to CF_XOPEN_SOURCE, from lynx changes.
        + update config.sub from
                http://git.savannah.gnu.org/cgit/config.git

20140913
        + add a configure check to ignore some of the plethora of non-working
          C++ cross-compilers.
        + build-fixes for Ada95 with gnat 4.9

20140906
        + build-fix and other improvements for port of ncurses-examples to
          NetBSD.
        + minor compiler-warning fixes.

20140831
        + modify test/demo_termcap.c and test/demo_terminfo.c to make their
          options more directly comparable, and add "-i" option to specify
          a terminal description filename to parse for names to lookup.

20140823
        + fix special case where double-width character overwrites a single-
          width character in the first column (report by Egmont Koblinger,
          cf: 20050813).

20140816
        + fix colors in ncurses 'b' test which did not work after changing
          it to put the test-strings in subwindows (cf: 20140705).
        + merge redundant SEE-ALSO sections in form and menu manpages.

20140809
        + modify declarations for user-data pointers in C++ binding to use
          reinterpret_cast to facilitate converting typed pointers to void*
          in user's application (patch by Adam Jiang).
        + regenerated html manpages.
        + add note regarding cause and effect for TERM in ncurses manpage,
          having noted clueless verbiage in Terminal.app's "help" file
          which reverses cause/effect.
        + remove special fallback definition for NCURSES_ATTR_T, since macros
          have resolved type-mismatches using casts (cf: 970412).
        + fixes for win_driver.c:
          + handle repainting on endwin/refresh combination.
          + implement beep().
          + minor cleanup.

20140802
        + minor portability fixes for MinGW:
          + ensure WINVER is defined in makefiles rather than using headers
          + add check for gnatprep "-T" option
          + work around bug introduced by gcc 4.8.1 in MinGW which breaks
            "trace" feature:
            http://stackoverflow.com/questions/20877689/gcc-4-8-1-minggw-d-option-does-not-work-as-usual
        + fix most compiler warnings for Cygwin ncurses-examples.
        + restore "redundant" -I options in test/Makefile.in, since they are
          typically needed when building the derived ncurses-examples package
          (cf: 20140726).

20140726
        + eliminate some redundant -I options used for building libraries, and
          ensure that ${srcdir} is added to the include-options (prompted by
          discussion with Paul Gilmartin).
        + modify configure script to work with Minix3.2
        + add form library extension O_DYNAMIC_JUSTIFY option which can be
          used to override the different treatment of justification for static
          versus dynamic fields (adapted from patch by Leon Winter).
        + add a null pointer check in test/edit_field.c (report/analysis by
          Leon Winter, cf: 20130608).

20140719
        + make workarounds for compiling test-programs with NetBSD curses.
        + improve configure macro CF_ADD_LIBS, to eliminate repeated -l/-L
          options, from xterm changes.

20140712
        + correct Charable() macro check for A_ALTCHARSET in wide-characters.
        + build-fix for position-debug code in tty_update.c, to work with or
          without sp-funcs.

20140705
        + add w/W toggle to ncurses.c 'B' test, to demonstrate permutation of
          video-attributes and colors with double-width character strings.

20140629
        + correct check in win_driver.c for saving screen contents, e.g., when
          NCURSES_CONSOLE2 is set (cf: 20140503).
        + reorganize b/B menu items in ncurses.c, putting the test-strings into
          subwindows.  This is needed for a planned change to use Unicode
          fullwidth characters in the test-screens.
        + correct update to form status for _NEWTOP, broken by fixes for
          compiler warnings (patch by Leon Winter, cf: 20120616).

20140621
        + change shared-library suffix for AIX 5 and 6 to ".so", avoiding
          conflict with the static library (report by Ben Lentz).
        + document RPATH_LIST in INSTALLATION file, as part of workarounds for
          upgrading an ncurses library using the "--with-shared" option.
        + modify test/ncurses.c c/C tests to cycle through subsets of the
          total number of colors, to better illustrate 8/16/88/256-colors by
          providing directly comparable screens.
        + add test/dots_curses.c, for comparison with the low-level examples.

20140614
        + fix dereference before null check found by Coverity in tic.c
          (cf: 20140524).
        + fix sign-extension bug in read_entry.c which prevented "toe" from
          reading empty "screen+italics" entry.
        + modify sgr for screen.xterm-new to support dim capability -TD
        + add dim capability to nsterm+7 -TD
        + cancel dim capability for iterm -TD
        + add dim, invis capabilities to vte-2012 -TD
        + add sitm/ritm to konsole-base and mlterm3 -TD

20140609
        > fix regression in screen terminfo entries (reports by Christian
          Ebert, Gabriele Balducci) -TD
        + revert the change to screen; see notes for why this did not work -TD
        + cancel sitm/ritm for entries which extend "screen", to work around
          screen's hardcoded behavior for SGR 3 -TD

20140607
        + separate masking for sgr in vidputs from sitm/ritm, which do not
          overlap with sgr functionality.
        + remove unneeded -i option from adacurses-config; put -a in the -I
          option for consistency (patch by Pascal Pignard).
        + update xterm-new terminfo entry to xterm patch #305 -TD
        + change format of test-scripts for Debian Ada95 and ncurses-examples
          packages to quilted to work around Debian #700177 (cf: 20130907).
        + build fix for form_driver_w.c as part of ncurses-examples package for
          older ncurses than 20131207.
        + add Hello World example to adacurses-config manpage.
        + remove unused --enable-pc-files option from Ada95/configure.
        + add --disable-gnat-projects option for testing.
        + revert changes to Ada95 project-files configuration (cf: 20140524).
        + corrected usage message in adacurses-config.

20140524
        + fix typo in ncurses manpage for the NCURSES_NO_MAGIC_COOKIE
          environment variable.
        + improve discussion of input-echoing in curs_getch.3x
        + clarify discussion in curs_addch.3x of wrapping.
        + modify parametrized.h to make fln non-padded.
        + correct several entries which had termcap-style padding used in
          terminfo: adm21, aj510, alto-h19, att605-pc, x820 -TD
        + correct syntax for padding in some entries: dg211, h19 -TD
        + correct ti924-8 which had confused padding versus octal escapes -TD
        + correct padding in sbi entry -TD
        + fix an old bug in the termcap emulation; "%i" was ignored in tparm()
          because the parameters to be incremented were already on the internal
          stack (report by Corinna Vinschen).
        + modify tic's "-c" option to take into account the "-C" option to
          activate additional checks which compare the results from running
          tparm() on the terminfo expressions versus the translated termcap
          expressions.
        + modify tic to allow it to read from FIFOs (report by Matthieu Fronton,
          cf: 20120324).
        > patches by Nicolas Boulenguez:
        + explicit dereferences to suppress some style warnings.
        + when c_varargs_to_ada.c includes its header, use double quotes
          instead of <>.
        + samples/ncurses2-util.adb:  removed unused with clause.  The warning
          was removed by an obsolete pragma.
        + replaced Unreferenced pragmas with Warnings (Off).  The latter,
          available with older GNATs, needs no configure test.  This also
          replaces 3 untested Unreferenced pragmas.
        + simplified To_C usage in trace handling.  Using two parameters allows
          some basic formatting, and avoids a warning about security with some
          compiler flags.
        + for generated Ada sources, replace many snippets with one pure
          package.
        + removed C_Chtype and its conversions.
        + removed C_AttrType and its conversions.
        + removed conversions between int, Item_Option_Set, Menu_Option_Set.
        + removed int, Field_Option_Set, Item_Option_Set conversions.
        + removed C_TraceType, Attribute_Option_Set conversions.
        + replaced C.int with direct use of Eti_Error, now enumerated.  As it
          was used in a case statement, values were tested by the Ada compiler
          to be consecutive anyway.
        + src/Makefile.in: remove duplicate stanza
        + only consider using a project for shared libraries.
        + style. Silent gnat-4.9 warning about misplaced "then".
        + generate shared library project to honor ADAFLAGS, LDFLAGS.

20140510
        + cleanup recently introduced compiler warnings for MingW port.
        + workaround for ${MAKEFLAGS} configure check versus GNU make 4.0,
          which introduces more than one gratuitous incompatibility.

20140503
        + add vt520ansi terminfo entry (patch by Mike Gran)
        + further improve MinGW support for the scenario where there is an
          ANSI-escapes handler such as ansicon running in the console window
          (patch by Juergen Pfeifer).

20140426
        + add --disable-lib-suffixes option (adapted from patch by Juergen
          Pfeifer).
        + merge some changes from Juergen Pfeifer's work with MSYS2, to
          simplify later merging:
          + use NC_ISATTY() macro for isatty() in library
          + add _nc_mingw_isatty() and related functions to windows-driver
          + rename terminal driver entrypoints to simplify grep's
        + remove a check in the sp-funcs flavor of newterm() which allowed only
          the first call to newterm() to succeed (report by Thomas Beierlein,
          cf: 20090927).

20140419
        + update config.guess, config.sub from
                http://git.savannah.gnu.org/cgit/config.git

20140412
        + modify configure script:
          + drop the -no-gcc option from Intel compiler, from lynx changes.
          + extend the --with-hashed-db configure option to simplify building
            with different versions of Berkeley database using FreeBSD ports.
        + improve initialization for MinGW port (Juergen Pfeifer):
          + enforce Windows-style path-separator if cross-compiling,
          + add a driver-name method to each of the drivers,
          + allow the Windows driver name to match "unknown", ignoring case,
          + lengthen the built-in name for the Windows console driver to
            "#win32console", and
          + move the comparison of driver-names allowing abbreviation, e.g.,
            to "#win32con" into the Windows console driver.

20140329
        + add check in tic for mismatch between ccc and initp/initc
        + cancel ccc in putty-256color and konsole-256color for consistency
          with the cancelled initc capability (patch by Sven Zuhlsdorf).
        + add xterm+256setaf building block for various terminals which only
          get the 256-color feature half-implemented -TD
        + updated "st" entry (leaving the 0.1.1 version as "simpleterm") to
          0.4.1 -TD

20140323
        + fix typo in "mlterm" entry (report by Gabriele Balducci) -TD

20140322
        + use types from <stdint.h> in sample build-scripts for chtype, etc.
        + modify configure script and curses.h.in to allow the types specified
          using --with-chtype and related options to be defined in <stdint.h>
        + add terminology entry -TD
        + add mlterm3 entry, use that as "mlterm" -TD
        + inherit mlterm-256color from mlterm -TD

20140315
        + modify _nc_New_TopRow_and_CurrentItem() to ensure that the menu's
          top-row is adjusted as needed to ensure that the current item is
          on the screen (patch by Johann Klammer).
        + add wgetdelay() to retrieve _delay member of WINDOW if it happens to
          be opaque, e.g., in the pthread configuration (prompted by patch by
          Soren Brinkmann).

20140308
        + modify ifdef in read_entry.c to handle the case where
          NCURSES_USE_DATABASE is not defined (patch by Xin Li).
        + add cast in form_driver_w() to fix ARM build (patch by Xin Li).
        + add logic to win_driver.c to save/restore screen contents when not
          allocating a console-buffer (cf: 20140215).

20140301
        + clarify error-returns from newwin (report by Ruslan Nabioullin).

20140222
        + fix some compiler warnings in win_driver.c
        + updated notes for wsvt25 based on tack and vttest -TD
        + add teken entry to show actual properties of FreeBSD's "xterm"
          console -TD

20140215
        + in-progress changes to win_driver.c to implement output without
          allocating a console-buffer.  This uses a pre-existing environment
          variable NCGDB used by Juergen Pfeifer for debugging (prompted by
          discussion with Erwin Waterlander regarding Console2, which hangs
          when reading in an allocated console-buffer).
        + add -t option to gdc.c, and modify to accept "S" to step through the
          scrolling-stages.
        + regenerate NCURSES-Programming-HOWTO.html to fix some of the broken
          html emitted by docbook.

20140209
        + modify CF_XOPEN_SOURCE macro to omit followup check to determine if
          _XOPEN_SOURCE can/should be defined.  g++ 4.7.2 built on Solaris 10
          has some header breakage due to its own predefinition of this symbol
          (report by Jean-Pierre Flori, Sage #15796).

20140201
        + add/use symbol NCURSES_PAIRS_T like NCURSES_COLOR_T, to illustrate
          which "short" types are for color pairs and which are color values.
        + fix build for s390x, by correcting field bit offsets in generated
          representation clauses when int=32 long=64 and endian=big, or at
          least on s390x (patch by Nicolas Boulenguez).
        + minor cleanup change to test/form_driver_w.c (patch by Gaute Hope).

20140125
        + remove unnecessary ifdef's in Ada95/gen/gen.c, which reportedly do
          not work as is with gcc 4.8 due to fixes using chtype cast made for
          new compiler warnings by gcc 4.8 in 20130824 (Debian #735753, patch
          by Nicolas Boulenguez).

20140118
        + apply includesubdir variable which was introduced in 20130805 to
          gen-pkgconfig.in (Debian #735782).

20131221
        + further improved man2html, used this to fix broken links in html
          manpages.  See
          ftp://ftp.invisible-island.net/ncurses/patches/man2html

20131214
        + modify configure-script/ifdef's to allow OLD_TTY feature to be
          suppressed if the type of ospeed is configured using the option
          --with-ospeed to not be a short.  By default, it is a short for
          termcap-compatibility (adapted from suggestion by Christian
          Weisgerber).
        + correct a typo in _nc_baudrate() (patch by Christian Weisgerber,
          cf: 20061230).
        + fix a few -Wlogical-op warnings.
        + updated llib-l* files.

20131207
        + add form_driver_w() entrypoint to wide-character forms library, as
          well as test program form_driver_w (adapted from patch by Gaute
          Hope).

20131123
        + minor fix for CF_GCC_WARNINGS to special-case options which are not
          recognized by clang.

20131116
        + add special case to configure script to move _XOPEN_SOURCE_EXTENDED
          definition from CPPFLAGS to CFLAGS if it happens to be needed for
          Solaris, because g++ errors with that definition (report by
          Jean-Pierre Flori, Sage #15268).
        + correct logic in infocmp's -i option which was intended to ignore
          strings which correspond to function-keys as candidates for piecing
          together initialization- or reset-strings.  The problem dates to
          1.9.7a, but was overlooked until changes in -Wlogical-op warnings for
          gcc 4.8 (report by David Binderman).
        + updated CF_GCC_WARNINGS to documented options for gcc 4.9.0, moving
          checks for -Wextra and -Wdeclaration-after-statement into the macro,
          and adding checks for -Wignored-qualifiers, -Wlogical-op and
          -Wvarargs
        + updated CF_CURSES_UNCTRL_H and CF_SHARED_OPTS macros from ongoing
          work on cdk.
        + update config.sub from
                http://git.savannah.gnu.org/cgit/config.git

20131110
        + minor cleanup of terminfo.tail

20131102
        + use TS extension to describe xterm's title-escapes -TD
        + modify terminator and nsterm-s to use xterm+sl-twm building block -TD
        + update hurd.ti, add xenl to reflect 2011-03-06 change in
          http://git.savannah.gnu.org/cgit/hurd/hurd.git/log/console/display.c
          (Debian #727119).
        + simplify pfkey expression in ansi.sys -TD

20131027
        + correct/simplify ifdef's for cur_term versus broken-linker and
          reentrant options (report by Jean-Pierre Flori, cf: 20090530).
        + modify release/version combinations in test build-scripts to make
          them more consistent with other packages.

20131019
        + add nc_mingw.h to installed headers for MinGW port; needed for
          compiling ncurses-examples.
        + add rpm-script for testing cross-compile of ncurses-examples.

20131014
        + fix new typo in CF_ADA_INCLUDE_DIRS macro (report by Roumen Petrov).

20131012
        + fix a few compiler warnings in progs and test.
        + minor fix to package/debian-mingw/rules, do not strip dll's.
        + minor fixes to configure script for empty $prefix, e.g., when doing
          cross-compiles to MinGW.
        + add script for building test-packages of binaries cross-compiled to
          MinGW using NSIS.

20131005
        + minor fixes for ncurses-example package and makefile.
        + add scripts for test-builds of cross-compiler packages for ncurses6
          to MinGW.

20130928
        + some build-fixes for ncurses-examples with NetBSD-6.0 curses, though
          it lacks some common functions such as use_env() which is not yet
          addressed.
        + build-fix and some compiler warning fixes for ncurses-examples with
          OpenBSD 5.3
        + fix a possible null-pointer reference in a trace message from newterm.
        + quiet a few warnings from NetBSD 6.0 namespace pollution by
          nonstandard popcount() function in standard strings.h header.
        + ignore g++ 4.2.1 warnings for "-Weffc++" in c++/cursesmain.cc
        + fix a few overlooked places for --enable-string-hacks option.

20130921
        + fix typo in curs_attr.3x (patch by Sven Joachim, cf: 20130831).
        + build-fix for --with-shared option for DragonFly and FreeBSD (report
          by Rong-En Fan, cf: 20130727).

20130907
        + build-fixes for MSYS for two test-programs (patches by Ray Donnelly,
          Alexey Pavlov).
        + revert change to two of the dpkg format files, to work with dpkg
          before/after Debian #700177.
        + fix gcc -Wconversion warning in wattr_get() macro.
        + add msys and msysdll to known host/configuration types (patch by
          Alexey Pavlov).
        + modify CF_RPATH_HACK configure macro to not rely upon "-u" option
          of sort, improving portability.
        + minor improvements for test-programs from reviewing Solaris port.
        + update config.guess, config.sub from
                http://git.savannah.gnu.org/cgit/config.git

20130831
        + modify test/ncurses.c b/B tests to display lines only for the
          attributes which a given terminal supports, to make room for an
          italics test.
        + completed ncv table in terminfo.tail; it did not list the wide
          character codes listed in X/Open Curses issue 7.
        + add A_ITALIC extension (prompted by discussion with Egmont Koblinger).

20130824
        + fix some gcc 4.8 -Wconversion warnings.
        + change format of dpkg test-scripts to quilted to work around bug
          introduced by Debian #700177.
        + discard cached keyname() values if meta() is changed after a value
          was cached using (report by Kurban Mallachiev).