ncurses 6.3 - patch 20211225

[ncurses.git] / ANNOUNCE

diff --git a/ANNOUNCE b/ANNOUNCE
index 858c7f2fb3cbca9f3cf2023749859fe7560fa1b6..0684b3dc41d7e5df96990f73f9201f4b40b7d747 100644 (file)
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -1,4 +1,4 @@
-                            Announcing ncurses 6.0
+                            Announcing ncurses 6.3

 
 Overview
 
 
 Overview
 


@@ -6,8 +6,8 @@ Overview
    curses  in  System  V  Release  4.0 (SVr4), and more. It uses terminfo
    format,  supports  pads  and  color  and multiple highlights and forms
    characters and function-key mapping, and has all the other SVr4-curses
    curses  in  System  V  Release  4.0 (SVr4), and more. It uses terminfo
    format,  supports  pads  and  color  and multiple highlights and forms
    characters and function-key mapping, and has all the other SVr4-curses

-   enhancements  over  BSD  curses.  SVr4 curses is better known today as
-   X/Open Curses.
+   enhancements  over  BSD curses. SVr4 curses became the basis of X/Open
+   Curses.

 
    In  mid-June  1995,  the  maintainer of 4.4BSD curses declared that he
    considered  4.4BSD curses obsolete, and encouraged the keepers of unix
 
    In  mid-June  1995,  the  maintainer of 4.4BSD curses declared that he
    considered  4.4BSD curses obsolete, and encouraged the keepers of unix


@@ -17,7 +17,7 @@ Overview
      * It is used in almost every system based on the Linux kernel (aside
        from some embedded applications).
      * It  is  used  as the system curses library on OpenBSD, FreeBSD and
      * It is used in almost every system based on the Linux kernel (aside
        from some embedded applications).
      * It  is  used  as the system curses library on OpenBSD, FreeBSD and

-       OSX.
+       MacOS.

      * It  is used in environments such as Cygwin and MinGW. The first of
        these was EMX on OS/2 Warp.
      * It is used (though usually not as the system curses) on all of the
      * It  is used in environments such as Cygwin and MinGW. The first of
        these was EMX on OS/2 Warp.
      * It is used (though usually not as the system curses) on all of the


@@ -26,440 +26,274 @@ Overview
      * It should work readily on any ANSI/POSIX-conforming unix.
 
    The distribution includes the library and support utilities, including
      * It should work readily on any ANSI/POSIX-conforming unix.
 
    The distribution includes the library and support utilities, including

-     * [1]captoinfo, a termcap conversion tool
-     * [2]clear, utility for clearing the screen
-     * [3]infocmp, the terminfo decompiler
-     * [4]tabs, set tabs on a terminal
-     * [5]tic, the terminfo compiler
-     * [6]toe, list (table of) terminfo entries
-     * [7]tput,  utility  for  retrieving  terminal capabilities in shell
+     * captoinfo, a termcap conversion tool
+     * clear, utility for clearing the screen
+     * infocmp, the terminfo decompiler
+     * tabs, set tabs on a terminal
+     * tic, the terminfo compiler
+     * toe, list (table of) terminfo entries
+     * tput,  utility  for  retrieving  terminal  capabilities  in  shell

        scripts
        scripts

-     * [8]tset, to initialize the terminal
+     * tset, to initialize the terminal

 
    Full manual pages are provided for the library and tools.
 
 
    Full manual pages are provided for the library and tools.
 

-   The  ncurses  distribution  is  available via anonymous FTP at the GNU
-   distribution site
+   The ncurses distribution is available at ncurses' homepage:

 
 

-     [9]ftp://ftp.gnu.org/gnu/ncurses/ .
+     ftp://ftp.invisible-island.net/ncurses/ or
+     https://invisible-mirror.net/archives/ncurses/ .

 
 

-   It is also available at
+   It is also available via anonymous FTP at the GNU distribution site

 
 

-     [10]ftp://invisible-island.net/ncurses/ .
+     ftp://ftp.gnu.org/gnu/ncurses/ .

 
 Release Notes
 
 
 Release Notes
 

-   These notes are for ncurses 6.0, released August 8, 2015.
+   These notes are for ncurses 6.3, released October 21, 2021.

 
    This  release  is  designed  to  be source-compatible with ncurses 5.0
 
    This  release  is  designed  to  be source-compatible with ncurses 5.0

-   through  5.9;  providing  a  new  application  binary interface (ABI).
-   Although  the  source can still be configured to support the ncurses 5
-   ABI,  the  intent  of  the  release is to provide extensions which are
-   generally useful, but binary-incompatible with ncurses 5:
-     * Extend  the  cchar_t  structure to allow more than 16 colors to be
-       encoded.
-     * Modify  the  encoding  of mouse state to make room for a 5th mouse
-       button.  That  allows  one  to use ncurses with a wheel mouse with
-       xterm or similar X terminal emulators.
-
-   There are, of course, numerous other improvements, including
-     * fixes made based on the Clang and Coverity static analyzers.
-     * memory leak fixes using Valgrind
-
-   The  release  notes  mention  some  bug-fixes,  but are focused on new
-   features  and  improvements to existing features log since ncurses 5.9
-   release.
-
-   While  the intent of the release is to provide a new stable ABI, there
-   are other development activities which are summarized below.
-     * The  original  release  plan,  e.g., for "5.10" was to improve the
-       MinGW port. Ultimately that was completed (wide-character support,
-       mouse,  etc),  but  was  deferred  to focus on termcap support and
-       performance  issues.  Also, pinpointing the problems with Console2
-       took a while.
-     * A  review  of  termcap  compatibility in 2011 led to several minor
-       fixes  in  the  library  and improvements to utilities. To do this
-       properly,  a  review of the various extent termcap implementations
-       was needed.
-       The [11]termcap library checker (tctest) (not part of ncurses) was
-       one    result.    A   followup   review   of   performance   using
-       [12]ncurses-examples in 2014 led to additional improvements.
-     * Output buffering provided a further, but worthwhile distraction. A
-       bug  report  in  2012  regarding  the  use  of  signal handlers in
-       ncurses)  pointed  out  [13]a  problem  with  the  use  of  unsafe
-       functions  for  handling SIGTSTP. Other signals could be addressed
-       with workarounds; repairing SIGTSTP required a different approach.
-       The  solution  required changing internal behavior of the library:
-       how it handles output buffering.
-       Now  ncurses buffers its own output, independently of the standard
-       output.  A few applications relied upon the library's direct reuse
-       of  the  standard  output  buffering;  however that is unspecified
-       behavior  and  has  never been a recommended practice. Identifying
-       these  applications  as  well  as  refining  the  change to permit
-       low-level applications to work consistently took time.
-     * Since  the introduction of the experimental support for 256 colors
-       early  in  [14]2005  (released in [15]ncurses 5.5), there has been
-       increased  user  interest. Almost all packagers continue providing
-       the ncurses ABI 5 which cannot support 256 colors.
-     * Symbol  versioning,  or  the  lack  of  it in ncurses, is the main
-       reason why packagers would be reluctant to add a new ncurses ABI.
-       This  release  provides  the  new  ABI along with script-generated
-       lists  of versioned symbols which can be used for both ABI 5 and 6
-       (with  distinct names to keep the two separate). This took time to
-       development, as reported in [16]Symbol versioning in ncurses.
+   through  6.2; providing extensions to the application binary interface
+   (ABI).  Although  the  source  can  still be configured to support the
+   ncurses  5  ABI, the reason for the release is to reflect improvements
+   to the ncurses 6 ABI and the supporting utility programs.
+
+   There  are,  of  course,  numerous  other improvements, listed in this
+   announcement.
+
+   The  most  important  bug-fixes/improvements  dealt  with  portability
+   issues.  The  release notes also mention some other bug-fixes, but are
+   focused  on  new  features and improvements to existing features since
+   ncurses 6.2 release.

 
   Library improvements
 
 
   Library improvements
 

-  Output buffering
-
-   X/Open curses provides more than one initialization function:
-     * [17]initscr (the simplest) accepts no parameters.
-     * [18]newterm accepts parameters for the stream input and output
-     * [19]setupterm (the low-level function) accepts a parameter for the
-       file descriptor of the output.
-
-   They are documented in X/Open as if initscr calls newterm using stdout
-   for   output  stream,  and  in  turn  newterm  calls  setupterm  using
-   fileno(stdout)  for  the file descriptor. As long as an implementation
-   acts  as if it does this, it conforms. In practice, implementations do
-   what  is  implied.  This  creates  a  problem: the low-level setupterm
-   function's  file  descriptor  is  unbuffered,  while  newterm  implies
-   buffered  output.  X/Open  Curses says that all output is done through
-   the  file  descriptor,  and  does  not  say  how  the output stream is
-   actually used.
-
-   Initially,  ncurses used the file descriptor (obtained from the output
-   stream  passed to newterm) for changing the terminal modes, and relied
-   upon  the  output  parameter of newterm for buffered output. Later (to
-   avoid  using  unsafe  buffered  I/O  in  signal handlers), ncurses was
-   modified  to use the file descriptor (unbuffered output) when cleaning
-   up  on receipt of a signal. Otherwise (when not handling a signal), it
-   continued to use the buffered output.
-
-   That  approach  worked reasonably well and as a side effect, using the
-   same buffered output as an application might use for printf meant that
-   no   flushing   was   needed   when   switching  between  normal-  and
-   screen-modes.
-
-   There were a couple of problems:
-     * to get good performance, curses (not only ncurses, but SVr4 curses
-       in general) set an output buffer using setbuf or similar function.
-       There  is no standard (or portable) way to turn that output buffer
-       off,  and  revert  to  line-buffering.  The  [20]NCURSES_NO_SETBUF
-       environment variable did make it optional.
-     * to  handle SIGTSTP (the "stop" signal), ncurses relied upon unsafe
-       functions.  That  is,  due  to  the  complexity of the feature, it
-       relied  upon reusing existing functions which should not have been
-       called via the signal handler.
-
-   Conveniently, solving the second problem (by making ncurses do its own
-   output  buffering)  also  fixed  the first one. But there were special
-   cases to resolve: [21]low-level functions such as mvcur, putp, vidattr
-   explicitly  use  the  standard  output.  Those  functions  were reused
-   internally, and required modification to distinguish whether they were
-   used by the high-level or low-level interfaces.
-
-   Finally, there may still be a few programs which should be modified to
-   improve their portability, e.g., adding an
-
-fflush(stdout);
-
-   when  switching  from "[22]shell" mode to "[23]program" (curses) mode.
-   Those are fairly rare because most programmers have learned not to mix
-   printf and [24]printw.
-
-  Symbol versioning
-
-   This  release  introduces symbol-versioning to ncurses because without
-   it,  the  change of ABI would be less successful. A lengthy discussion
-   will  be  presented  in  [25]Symbol versioning in ncurses. These notes
-   summarize what has changed, and what can be done with the new release.
-
-   Symbol-versioning  allows  the  developers  of  a library to mark each
-   public  symbol  (both  data and functions) with an identifier denoting
-   the  library  name  and  the  version for which it was built. By doing
-   this, users of the library have a way to help ensure that applications
-   do not accidentally load an incompatible library. In addition, private
-   symbols can be hidden entirely.
-
-   This   release   provides   sample   files   for  the  four  principal
-   configurations  of  ncurses libraries: ncurses, ncursesw, ncursest and
-   ncursestw. Each sample is given in two forms:
-
-   ".map"
-          These list all public symbols, together with version names.
-
-   ".sym"
-          These list all public symbols, without version names.
-
-   The  sample  files  are generated by scripts which take into account a
-   few special cases such as [26]tack to omit many of the ncurses private
-   symbols  (beginning with "_nc_"). Here are counts of globals versus
-   locals:
-
-      Config   Symbols Globals Locals "_nc_"
-     ncurses       976     796    180    332
-     ncursesw     1089     905    184    343
-     ncursest      979     804    175    358
-     ncursestw    1098     914    184    372
-
-   Although only four sample configurations are presented, each is formed
-   by  merging  symbols  from  several  combinations  of configure-script
-   options, taking into account advice from downstream packagers. Because
-   they  are  formed by merging, the sample files may list a symbol which
-   is  not  in  a  given package. That is expected. The samples have been
-   tested  and  are  working  with  systems  (such as Fedora, FreeBSD and
-   Debian)  which  fully  support  this  feature. There are other systems
-   which  do  not  support the feature, and a few (such as Solaris) which
-   provide incomplete support.
-
-   The  version-naming convention used allows these sample files to build
-   distinct libraries for ABI 5 and 6. Version names consist of
-     * configuration   name,  e.g.,  "NCURSESW"  for  the  wide-character
-       libraries
-     * ABI version (if not 5)
-     * library  name  for two special cases which have the same interface
-       across configurations: "TINFO" and "TIC"
-     * release version
-     * patch date (for the release version)
-
-   For  example,  running  nm  -D  on  the libraries in the ncurses6 test
-   package shows these symbol-versions:
-
-0000000000000000 A NCURSES6_TIC_5.0.19991023
-0000000000000000 A NCURSES6_TIC_5.1.20000708
-0000000000000000 A NCURSES6_TIC_5.5.20051010
-0000000000000000 A NCURSES6_TIC_5.7.20081102
-0000000000000000 A NCURSES6_TIC_5.9.20150530
-0000000000000000 A NCURSES6_TINFO_5.0.19991023
-0000000000000000 A NCURSES6_TINFO_5.1.20000708
-0000000000000000 A NCURSES6_TINFO_5.2.20001021
-0000000000000000 A NCURSES6_TINFO_5.3.20021019
-0000000000000000 A NCURSES6_TINFO_5.4.20040208
-0000000000000000 A NCURSES6_TINFO_5.5.20051010
-0000000000000000 A NCURSES6_TINFO_5.6.20061217
-0000000000000000 A NCURSES6_TINFO_5.7.20081102
-0000000000000000 A NCURSES6_TINFO_5.8.20110226
-0000000000000000 A NCURSES6_TINFO_5.9.20150530
-0000000000000000 A NCURSESW6_5.1.20000708
-0000000000000000 A NCURSESW6_5.3.20021019
-0000000000000000 A NCURSESW6_5.4.20040208
-0000000000000000 A NCURSESW6_5.5.20051010
-0000000000000000 A NCURSESW6_5.6.20061217
-0000000000000000 A NCURSESW6_5.7.20081102
-0000000000000000 A NCURSESW6_5.8.20110226
-0000000000000000 A NCURSESW6_5.9.20150530
-
-   As  a special case, this release (which makes the final change for ABI
-   5) is marked with release version 5.9 and patch date 20150530.
-
-  Miscellaneous
-
-   The new release has several improvements for performance and building.
-   For instance:
-     * several  files  in ncurses- and progs-directories were modified to
-       allow  const  data used in internal tables to be put by the linker
-       into the readonly text segment.
-     * various improvements were made to building the Ada95 binding, both
-       in simplifying the generated files as well as improving the way it
-       uses gnatmake
-
-   There are also new features in the libraries:
-     * added [27]use_tioctl function
-     * added  [28]wgetdelay  to  retrieve  _delay  member of WINDOW if it
-       happens to be opaque, e.g., in the pthread configuration.
-     * added [29]A_ITALIC extension.
-     * added  form  library  extension [30]O_DYNAMIC_JUSTIFY option which
-       can  be  used to override the different treatment of justification
-       for static versus dynamic fields .
-     * rewrote  [31]putwin  and  [32]getwin,  making  an extended version
-       which  is  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)
-
-     * several changes to mouse support include:
-          + added decoder for xterm SGR 1006 mouse mode.
-          + added experimental support for "%u" format to terminfo.
-          + improved  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 .
-
-   There   are   a   few  new  configure  options  dealing  with  library
-   customization:
-     * add "--enable-ext-putwin" configure option to turn on the extended
-       putwin/getwin.  By default, this is enabled for ABI 6 and disabled
-       with ABI 5.
-     * add  "--enable-string-hacks" option to control whether strlcat and
-       strlcpy  may  be  used. Because ncurses already does the requisite
-       buffer-limit  checks,  this feature is mainly of interest to quiet
-       compiler-warnings on a few systems.
-     * add  configure  option  "--with-tparm-arg"  to  allow  [33]tparm's
-       parameters  to  be  something more likely to be the same size as a
-       pointer, e.g., intptr_t (again, the default is set for ABI 6).
+    New features
+
+   There are a few new features:
+     * A   new   (experimental)   driver,   for   the   Windows  Terminal
+       configuration is provided.
+     * A  script is provided which enables OpenBSD users to upgrade their
+       system  to use ncurses 6.3 (OpenBSD developers are also invited to
+       do this).
+
+   Additionally,  to  improve  performance other changes (and extensions)
+   are provided in this release:
+     * modify  lib_mouse.c  to  check  for  out-of-range  button numbers,
+       convert those to position reports.
+     * add sp-funcs for erasewchar, killwchar.
+
+    Other improvements
+
+   These are revised features:
+     * modify  wgetnstr,  wgetn_wstr  to  improve compatibility with SVr4
+       curses in its treatment of interrupt and quit characters
+
+   These were done to limit or ultimately deprecate features:
+     * mark wgetch-events feature as deprecated.
+          + prevent  KEY_EVENT  from  appearing  in  curses.h  unless the
+            configure option --enable-wgetch-events is used.
+          + modify   MKkey_defs.sh   to   hide   ncurses'  definition  of
+            KEY_EVENTS to reduce Visual Studio C++ redefinition warnings.
+     * reduce   build-warnings   by   excluding   ncurses-internals  from
+       deprecation warnings.
+
+   These are improvements to existing features:
+     * drop symbols GCC_PRINTF and GCC_SCANF from <curses.h>, to simplify
+       use.
+     * apply  gcc  format  attribute  to  prototypes  which use a va_list
+       parameter rather than a "..." variable-length parameter list.
+     * modify  <term.h> so that it is not necessary to include <curses.h>
+       before <term.h>.
+     * provide for wide-characters as background character in wbkgrnd
+     * improve parameter-checking for tparm, adding function _nc_tiparm()
+       to   handle   the  most-used  case,  which  accepts  only  numeric
+       parameters.
+     * use  return-value  from vsnprintf to reallocate as needed to allow
+       for buffers larger than the screen size.
+     * 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.
+
+   These are corrections to existing features:
+     * add  a  check  to  guard against repeat_char emitting digits which
+       could  be interpreted as BSD-style padding when --enable-bsdpad is
+       configured.
+     * check  for screen size-change in scr_init and scr_restore, in case
+       a screen dump does not match the current screen dimensions

 
   Program improvements
 
 
   Program improvements
 

-    Utilities
-
-   Most of the termcap-related changes based on development of [34]tctest
-   (termcap  library  checker)  are  implemented  in  the tic and infocmp
-   programs   rather   than  affecting  the  library.  As  noted  in  the
-   [35]discussion  of  tctest,  ncurses's  ability  to  translate between
-   terminfo and termcap formats has been improved at different times, but
-   subject  to  feedback from "real" termcap users. There are very few of
-   those.  Nowadays,  virtually  all  termcap users are using ncurses (or
-   NetBSD, with its own terminfo library) and their programs are actually
-   using terminfo rather than termcap data.
-
-   Still,  there  are a few. A comment about the translation of the ASCII
-   NUL character prompted a review:
-     * Both   terminfo   and   termcap   store   string  capabilities  as
-       NUL-terminated strings.
-     * In terminfo, a \0 in a terminal description is stored as \200.
-     * There are no (known) terminals which would behave differently when
-       sent \0 or \200.
-     * When  translating  to  terminfo  format (or displaying a printable
-       version of an entry using infocmp), ncurses shows \200 as \0.
-     * It has done this since 1998 (quoting from the NEWS file):
-
-[36]980103
-...
-        + modify _nc_tic_expand() to generate \0 rather than \200.
-...
-        + correct translation of terminfo "^@", to \200, like \0.
-
-     * However,  the  _nc_tic_expand  function (which optionally produces
-       terminfo  or termcap format) did not address this special case for
-       termcap.  Even  the  later  4.4BSD  [37]cgetstr  interprets  a  \0
-       literally,  ending  that  string  (rather  than using the terminfo
-       improvement).
-
-   As  a  result of the review, several improvements were made to ncurses
-   translation to/from termcap format -- and improving the checks made in
-   tic  for  consistency  of  entries.  Most  of these are not of general
-   interest, except for two new command-line options for tic and infocmp:
-     * the  "-0"  option  generates  termcap/terminfo  source on a single
-       line.
-     * the  "-K"  option  provides stricter BSD-compatibility for termcap
-       output.
-
-   Other user-visible improvements and new features include:
-     * added  "-D"  option  to  tic  and  infocmp,  to  show the database
-       locations that it could use.
-     * added "-s" option to toe, to sort its output.
-     * extended  "-c" and "-n" options of infocmp to allow comparing more
-       than two entries.
-     * modified  toe's report when "-a" and "-s" options are combined, to
-       add a column showing which entries belong to a given database.
-     * modified  the clear program to take into account the "E3" extended
-       capability to clear the terminal's scrollback buffer.
+   Several improvements were made to the utility programs:
+
+   tabs
+
+          + implement "+m" option
+
+   tic
+
+          + add check for duplicate "use=" clauses.
+          + add  check  to  report  instances where tparm would detect an
+            error in an expression.
+          + add  user-defined  capabilities  from mintty to Caps-ncurses,
+            for checking consistency.
+          + improve warning when oc/op do not mention SGR 39/49 for xterm
+            compatible XT flag.
+          + improve  checks  for  number  of  parameters of smglp, smgrp,
+            smgtp, and smgbp.
+          + improve  "-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.
+          + improve check for errors detected in tparm.
+          + improve format of output, to ensure that the messages contain
+            only printable text.
+          + modify to eliminate unnecessary "\" to escape ":" in terminfo
+            format.
+          + remove check that assumes that none or both parameterized and
+            non-parameterized margin-setting capabilities are present.
+
+   toe
+
+          + modify  output  of  "toe -as" to show first description found
+            rather than the last.
+          + add  a  check  to ensure that a "termcap file" is text rather
+            than binary.
+
+   tput
+
+          + modify to allow multiple commands per line.
+          + improve  parameter-checking  by analyzing all extended string
+            capabilities,  e.g., as used in the Cs and Ms capabilities of
+            the tmux description.
+          + make  warning  messages  consistently  using alias names when
+            those are used, rather than the underlying program's name.
+          + improve   usage   message  for  aliases  such  as  clear,  by
+            eliminating tput-specific portions.
+          + modify  initialization  to  avoid  opening /dev/tty for cases
+            other than reset/init, e.g., for clear.

 
     Examples
 
 
     Examples
 

-   Along  with  the library and utilities, many improvements were made to
-   the  [38]ncurses-examples.  Some  were  made  to  allow  building (and
-   comparison-testing) against NetBSD curses and PDCurses. Both lack some
-   of  the  X/Open Curses features, necessitating customization. But this
-   activity  was  useful  because  it  showed  some remaining performance
-   issues (which have been resolved in this release).
-
-   These changes were made to verify compatibility or compare performance
-   of ncurses:
-     * made  workarounds  for compiling test-programs with NetBSD curses,
-       though it lacks some common functions such as [39]use_env.
-     * added dots_termcap test-program
-     * added  dots_curses test-program, for comparison with the low-level
-       examples.
-     * added   test_setupterm  test-proram  to  demonstrate  normal/error
-       returns from the setupterm and restartterm functions.
-     * added  "-d",  "-e"  and  "-q"  options  to  the  demo_terminfo and
-       demo_termcap test-programs.
-     * added   "-y"   option   to   demo_termcap  and  test/demo_terminfo
-       test-programs   to   demonstrate  behavior  with/without  extended
-       capabilities.
-     * modified  demo_termcap  and  demo_terminfo  test-programs  to make
-       their  options  more  directly  comparable, and add "-i" option to
-       specify  a  terminal  description  filename  to parse for names to
-       lookup.
-     * rewrote   the  tests  for  [40]mvderwin  and  test  for  recursive
-       [41]mvwin in the movewindow test-program.
-
-   These changes were made to help with the MinGW port:
-     * added   test-screens   to   the   ncurses   test-program  to  show
-       256-characters at a time, to help with MinGW port.
-     * modified the view test-program to load UTF-8 when built with MinGW
-       by  using  regular win32 API because the MinGW functions mblen and
-       mbtowc do not work.
-     * added "-s" option to the view test-program to allow it to start in
-       single-step mode, reducing size of trace files when it is used for
-       debugging MinGW changes.
-
-   These changes were made to verify new extensions in ncurses:
-     * added   [42]form_driver_w   entrypoint   to  wide-character  forms
-       library, as well as form_driver_w test-program.
-     * modified  ncurses  test-program's  b/B tests to display lines only
-       for  the  attributes which a given terminal supports, to make room
-       for an italics test.
-     * modified  ncurses  test-program,  adding  "-E" and "-T" options to
-       demonstrate use_env versus use_tioctl.
-     * modified ncurses test-program's 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.
-     * modified the ncurses test-program to also show position reports in
-       'a' test.
-
-   These changes were made to make the examples more useful:
-     * added scripts for building dpkg and rpm test-packages
-     * modified  the  hanoi  test-program  to  show the minimum number of
-       moves possible for the given number of tiles.
-     * modified  the  knight  test-program  to show the number of choices
-       possible for each position in automove option, e.g., to allow user
-       to follow Warnsdorff's rule to solve the puzzle.
+   Along  with  the  library and utilities, improvements were made to the
+   ncurses-examples.  Most  of  this  activity  aimed  at  improving  the
+   test-packages.  A few changes are more generally useful, e.g., for the
+   main   ncurses  test-program,  and  for  analyzing  traces  using  the
+   tracemunch script:
+     * add  "-r" option to the dots test-programs, to help with scripting
+       a performance comparison.
+     * build-fix  for  test_opaque,  for  configurations  without  opaque
+       curses structs, e.g., ncurses 5.7.
+     * improve tracemunch logic for "RUN" compaction.
+     * 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".
+     * modify  tracemunch  and  the panel library to show readable traces
+       for panel- and user-pointers.
+
+   There are other new demo/test programs and reusable examples:
+
+   back_ground
+          to exercise the wide-character background functions.
+
+   move_field
+          to  demonstrate move_field, and a stub for a corresponding demo
+          of dup_field.
+
+   test_tparm
+          for checking tparm changes.

 
   Terminal database
 
 
   Terminal database
 

-   This  release  provides  improvements  to  tic's "-c" checking option,
-   which was used for example to
-     * make sgr in several entries agree with other caps.
-     * correct  padding  in  some  entries  where  earlier  versions  had
-       miscounted the number of octal digits.
-

    There are several new terminal descriptions:
    There are several new terminal descriptions:

-     * [43]mlterm is now aliased to mlterm3
-     * [44]nsterm is now derived from nsterm-256color
-     * [45]putty-sco
-     * [46]teken is FreeBSD's "xterm" console.
-     * [47]terminator
-     * [48]terminology
-     * [49]tmux is derived from screen.
-     * several  screen.XXX  entries support the respective variations for
-       256 colors.
-     * [50]simpleterm is now 0.5
-     * [51]vte is aliased to vte-2012
-     * [52]vt520ansi
+
+     absolute,    att610+cvis,    foot,    foot-direct,   hp98550-color,
+     hpterm-color2,   hterm,   hterm-256color,   linux-s,  putty+keypad,
+     putty+screen,    putty-screen,    screen.linux-s,   scrt/securecrt,
+     tmux-direct,  vt220+cvis,  vt220+cvis8, vt220+pcedit, vt220+vtedit,
+     vt220-base,     vt52+keypad,    xterm+256color2,    xterm+88color2,
+     xterm-direct16,       xterm-direct256,      xterm+nofkeys,      and
+     xterm+nopcfkeys.
+
+   There  are  many  changes to existing terminal descriptions. Some were
+   updates to several descriptions:
+     * correct use-ordering in some xterm-direct flavors
+     * fix   some   sgr   inconsistencies  in  d230c,  ibm6153,  ibm6154,
+       ncrvt100an
+     * improve vt50h and vt52 based on DECScope manual
+     * use hp+arrows in a few places
+     * use hp+pfk-cr in a few places
+     * use  vt220+cvis  in  st,  terminology,  termite  since they ignore
+       blinking-cursor detail in att610+cvis
+
+   while  others  affected specific descriptions. These were retested, to
+   take into account changes by their developers:
+
+     kitty+common, mlterm3, ms-terminal
+
+   while  these are specific fixes based on reviewing documentation, user
+   reports, or warnings from tic:
+
+   aaa+dec, aaa+rv
+          correct rmacs/smacs
+
+   aaa+rv
+          correct sgr
+
+   icl6404
+          correct csr
+
+   kitty
+          use att610+cvis, xterm+tmux and ansi+enq
+
+   konsole-base
+          re-enable "bel"
+
+   linux2.6
+          fix pound-sign mapping in acsc
+
+   linux3.0
+          modify to reflect default mapping of shift-tab by kbd 1.14
+
+   pccons
+          fill in some missing pieces, to make it comparable to the vt220
+          entry
+
+   putty
+          use vt100+fnkeys, add rep
+
+   screen
+          use vt100+enq
+
+   terminator
+          corrected tsl capability
+
+   ti916
+          correct cup
+
+   tmux
+          change kbs to ^?
+
+   vt220
+          use vt220+cvis
+
+   vt420+lrmm
+          add smglp and smgrp
+
+   vt420
+          use vt420+lrmm
+
+   xterm-new
+          add nel
+
+   xterm-vt52
+          use vt52+keypad

 
    A few entries use extensions (user-defined terminal capabilities):
 
    A few entries use extensions (user-defined terminal capabilities):

-     * E3,  used  in  linux,  putty  and  xterm-basic  is  tested  in the
-       [53]clear program to erase a terminal's scrollback.
-     * TS  is  used  in the [54]xterm+sl building block to help deprecate
-       the misuse of tsl for xterm's title-string.
-     * XT  is  used  in  some  terminfo entries to improve usefulness for
-       other  applications  than screen, which would like to pretend that
-       xterm's title is a status-line.
-     * xm  is  used  in  examples  [55]xterm-1005  and  [56]xterm-1006 to
-       illustrate a way to make mouse handling more general
-
-   A   few   terminals   support  italics  and/or  dim  capabilities.  In
-   particular,  screen  does  not.  Documented that, and accommodated the
-   terminals where this feature works with the A_ITALIC extension.
-     * konsole, mlterm3 (italics)
-     * nsterm (dim)
-     * screen (dim)
-     * vte (dim, italics)
-     * xterm (dim, italics)
+     * add   shifted   Linux  console  keys  in  linux+sfkeys  entry  for
+       screen.linux
+     * add Smulx to alacritty
+     * add kbeg to xterm+keypad to accommodate termcap applications
+     * add  extensions  in  xterm+tmux and ecma+strikeout to ms-terminal,
+       but cancel the non-working Cr and Ms capabilities

 
   Documentation
 
 
   Documentation
 


@@ -468,325 +302,170 @@ fflush(stdout);
      * attempts  to  improve the description of features which users have
        found confusing
      * fills  in overlooked descriptions of features which were described
      * attempts  to  improve the description of features which users have
        found confusing
      * fills  in overlooked descriptions of features which were described

-       in the [57]NEWS file but treated sketchily in manual pages.
-
-   In  addition,  the  mechanism  for  producing  HTML  versions  of  the
-   documentation has been improved:
-     * use an improved version of [58]man2html to generate html manpages.
-     * regenerated  [59]NCURSES-Programming-HOWTO.html to fix some of the
-       broken html emitted by docbook.
+       in the NEWS file but treated sketchily in manual pages.
+
+   In  addition  to  providing  background  information  to explain these
+   features   and   show   how   they  evolved,  there  are  corrections,
+   clarifications, etc.:
+     * Corrections:
+          + make  opts  extension  for  getcchar  work  as documented for
+            ncurses 6.1, adding "-g" flag to demo_new_pair to illustrate.
+          + modify  tset  "-q"  option to refrain from modifying terminal
+            modes, to match the documentation.
+     * New/improved history and portability sections:
+          + improve documentation for tparm and static/dynamic variables.
+          + 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>
+          + add   historical   notes   to   tput,   curses-terminfo   and
+            curses-color manpages based on source-code for SVr2, SVr3 and
+            SVr4.
+          + improve  history  section  for tset manpage based on the 1BSD
+            tarball,  which  preceded  BSD's  SCCS  checkins by more than
+            three years.
+     * Other improvements:
+          + explain  in ncurses.3x that functions in the tinfo library do
+            not rely upon wide-characters.
+          + improve   manual   page  for  panel  library,  extending  the
+            portability section as well as documenting error-returns.
+          + add  section  on  margins  to terminfo.5, adapted from X/Open
+            Curses.
+          + improve man/term.5 section on legacy storage format.
+          + add a note in terminfo.5 explaining that no-parameter strings
+            such as sgr0 or cnorm should not be used with tparm.
+          + improve description of BSD-style padding in curs_termcap.3x
+          + improve  discussion  of  padding  versus  tparm  and tputs in
+            man/curs_terminfo.3x
+          + add a note in manual page to explain ungetch vs unget_wch.
+          + improve  description  of error-returns in waddch and waddnstr
+            manual pages.
+
+   There  are  no new manual pages (all of the manual page updates are to
+   existing pages).
+
+   Some  of  the  improvements  are  more subtle, relating to the way the
+   information  is  presented. For instance, hyphenation is suppressed in
+   the HTML files generated from manual pages because an upgrade to groff
+   gave  noticeably  poorer  results,  interfering  with  the  process of
+   creating links between the resulting webpages.

 
   Interesting bug-fixes
 
 
   Interesting bug-fixes
 

-     * Ada95 binding:
-          + modify  makefile  rules  to ensure that the PIC option is not
-            used when building a static library
-          + make  Ada95  build-fix  for  big-endian architectures such as
-            sparc.  This undoes one of the fixes from [60]20110319, which
-            added an "Unused" member to representation clauses, replacing
-            that with pragmas to suppress warnings about unused bits.
-     * Color and attributes:
-          + parenthesize  parameter  of  COLOR_PAIR  and  PAIR_NUMBER  in
-            curses.h in case it happens to be a comma-expression.
-          + improve  [61]20021221  workaround  for broken acs, handling a
-            case  where  that ACS_xxx character is not in the acsc string
-            but there is a known wide-character which can be used.
-          + modify  [62]init_pair  to  accept  -1's for color value after
-            [63]assume_default_colors has been called.
-          + add  a  check  in [64]start_color to limit color-pairs to 256
-            when extended colors are not supported.
-     * Resizing the screen:
-          + propagate  error-returns  from  wresize,  i.e.,  the internal
-            increase_size    and    decrease_size    functions    through
-            [65]resize_term.
-          + add  check  for  zero/negative  dimensions for resizeterm and
-            resize_term.
-          + modify  resizeterm to always push a KEY_RESIZE onto the fifo,
-            even  if  screensize  is  unchanged. Modify library to push a
-            KEY_RESIZE  if there was a SIGWINCH, even if it does not call
-            resizeterm).   These  changes  eliminate  the  case  where  a
-            SIGWINCH  is  received,  but  ERR  is returned from wgetch or
-            wgetnstr because the screen dimensions did not change.
-     * Low-level interfaces
-          + 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.
-          + change  "%l" behavior in tparm to push the string length onto
-            the  stack  rather  than saving the formatted length into the
-            output buffer.
-          + modify  name-comparison  for  tgetstr,  etc.,  to accommodate
-            legacy  applications  as well as to improve compatbility with
-            BSD 4.2 termcap implementations (see note for [66]980725).
-     * High-level interfaces
-          + modify internal recursion in wgetch which handles cooked mode
-            to  check if the call to wgetnstr returned an error. This can
-            happen  when  both nocbreak and nodelay are set, for instance
-            (see note for [67]960418).
-          + add a check in internal function waddch_nosync to ensure that
-            tab characters are treated as control characters; some broken
-            locales claim they are printable.
-          + modify  menu  library  to  ensure  that  a  menu's top-row is
-            adjusted  as needed to ensure that the current item is on the
-            screen
-          + fix  special  case  where double-width character overwrites a
-            single- width character in the first column.
+   While  there  were  many bugs fixed during development of ncurses 6.3,
+   only  a  few  (the  reason  for  this release) were both important and
+   interesting. Most of the bug-fixes were for local issues which did not
+   affect  compatibility across releases. Since those are detailed in the
+   NEWS file no elaboration is needed here.
+
+   The interesting bugs were:
+     * 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.
+       This  was  a regression introduced in ncurses 6.2 (reported on the
+       mailing list), for which the workaround was to specify a blank for
+       the background character.
+     * remove  output-related  checks  for  nl/nonl (also reported on the
+       mailing list).
+     * improve  tparm  implementation of %P and %g, more closely matching
+       SVr4  terminfo.  Those  denote  static  and  dynamic  variables in
+       terminfo expressions.
+       Exactly  what those terms meant was never documented before in any
+       implementation of curses, aside from source code. Unlike the other
+       two  fixes,  the  problem  was discovered while studying OpenBSD's
+       version of tset.

 
   Configuration changes
 
     Major changes
 
 
   Configuration changes
 
     Major changes
 

-   The ncurses 6.0 configure script makes changes to the default value of
-   several  configure options, depending on the --with-abi-version option
-   (i.e., whether its value is "5" or "6"):
-
-   --enable-const
-          Feature  introduced  in  [68]970405  supports  the use of const
-          where  X/Open  Curses  should  have, but did not. NetBSD curses
-          does something similar with const.
-
-   --enable-ext-colors
-          Extends  the  cchar_t structure to allow more than 16 colors to
-          be   encoded.   This   applies   only   to  the  wide-character
-          (--enable-widec) configuration.
-
-   --enable-ext-mouse
-          Modifies  the  encoding  of  mouse state to make room for a 5th
-          mouse button. That allows one to use ncurses with a wheel mouse
-          with xterm or similar X terminal emulators.
-
-   --enable-ext-putwin
-          Modifies  the  file-format  written  by putwin to use printable
-          text  rather  than binary files, allowing getwin to read screen
-          dumps  written by differently-configured ncurses libraries. The
-          extended  getwin  can  still  read binary screen dumps from the
-          same  configuration  of  ncurses.  This does not change the ABI
-          (the binary interface seen by calling applications).
-
-   --enable-interop
-          Modifies  the  FIELDTYPE structure used for the form library to
-          make it more generic.
-
-   --enable-lp64
-          Allows  an  application  to  define _LP64 to declare chtype and
-          mmask_t  as  simply "unsigned" rather than the configured types
-          using the --with-chtype and --with-mmask_t options.
-
-   --enable-sp-funcs
-          Compile-in support for extended functions which accept a SCREEN
-          pointer,  reducing  the  need  for juggling the global SP value
-          with [69]set_term and [70]delscreen.
-
-   --with-chtype=uint32_t
-          Makes chtype explicitly a 32-bit unsigned value.
-
-   --with-mmask_t=uint32_t
-          Makes mmask_t explicitly a 32-bit unsigned value.
-
-   --with-tparm-arg=intptr_t
-          X/Open  Curses  declares  [71]tparm  using long for each of the
-          parameters  aside  from  the  formatting string, presuming that
-          long  and  char*  are the same size. This configure option uses
-          intptr_t which provides a better guarantee of the sizes.
-
-   The  configure  script  no longer checks for antique compilers; c89 is
-   assumed  as  a  minimum. There are a few features from later revisions
-   which  are  used  when available. The configure script makes checks to
-   turn on useful warnings from clang, gcc and icc. You should be able to
-   build  ncurses  6.0  with  any  of  the  current (or not so current) C
-   compilers available in 2015.
-
-   The configure script, by the way, makes changes which do not work with
-   systems  whose  /bin/sh is non-POSIX. This mainly affects Solaris (the
-   other  vendor  unix systems have followed the POSIX guidelines for the
-   past  twenty  years).  If  you  must  build  on  Solaris, its [72]xpg4
-   binaries suffice, e.g.,
-
-     #!/bin/sh
-     WHAT=`hostname|sed -e 's/\..*//'`
-     OUT=configure.out
-     cat >>$OUT <<EOF/
-     ** `date`
-     ** node: $WHAT
-     ** user: `id`
-     ** conf: $*
-     EOF/
-
-     SHELL=/bin/sh
-     if test -f /usr/xpg4/bin/sh
-     then
-             CONFIG_SHELL=/usr/xpg4/bin/sh
-             export CONFIG_SHELL
-             SHELL=$CONFIG_SHELL
-     fi
-
-     rm -f config.status config.cache
-     TOP=$HOME/$WHAT
-     $SHELL ./configure --verbose \
-             --disable-echo \
-             --disable-overwrite \
-             --enable-warnings \
-             --with-warnings \
-             --prefix=$TOP $* 2>&1 | tee -a $OUT
-
-   Other major changes to the configure script include:
-     * ABI 6 is now the default, intending that the existing ABI 5 should
-       build as before using the "--with-abi-version=5" option.
-     * added   --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
-     * the  configure  script  looks  for gnatgcc if the Ada95 binding is
-       built,  in  preference  to  the  default  gcc/cc.  The script also
-       ensures  that  the  Ada95  binding  is  built  with  the  level of
-       optimization as the C libraries.
-     * the  configure script captures define's related to -D_XOPEN_SOURCE
-       from  the  configure check and adds those to the *-config and *.pc
-       files, to simplify use for the wide-character libraries.
+   There  are  no  major  changes. Several new options were added to ease
+   integration  of packages with systems using different versions of GNAT
+   and ncurses. Also, improvements were made to configure checks.

 
     Configuration options
 
 
     Configuration options
 

-   There are several new (or extended) configure options:
+   There are a few new/modified configure options:
+
+   --enable-fvisibility
+          new  configure  option  and  check  for gcc -fvisibility=hidden
+          feature

 
 

-   --disable-db-install
-          Do  not  install  the  terminal  database. This is used to omit
-          features for packages, as done with --without-progs. The option
-          simplifies building cross-compile support packages.
+   --enable-leaks
+          corrected  to allow turning leak-checking off later in a set of
+          options.

 
 

-   --disable-gnat-projects
-          This option is used for regression testing
+   --enable-stdnoreturn
+          new  configure  option  makes the _Noreturn keyword optional to
+          ease transition.

 
 

-   --disable-lib-suffixes
-          Suppress  the "w", "t" or "tw" suffixes which normally would be
-          added   to   the  library  names  for  the  --enable-widec  and
-          --with-pthread options.
+   --disable-pkg-ldflags
+          revised option also controls whether $LDFLAGS from the build is
+          provided in "-config" and ".pc" files.

 
 

-   --with-cxx-shared
-          When  --with-shared  is  set,  build  libncurses++  as a shared
-          library.  This  implicitly  relies  upon building with gcc/g++,
-          since  other  compiler  suites  may have differences in the way
-          shared  libraries  are  built.  libtool  by the way has similar
-          limitations.
+   --disable-root-access
+          add  configure  option  which  tells  ncurses  to disallow most
+          file-opens by setuid processes.

 
 

-   --with-hashed-db
-          Extended  this  configure  option  to  simplify  building  with
-          different versions of Berkeley database using FreeBSD ports.
+   --disable-wattr-macros
+          changed  default  to  help  packagers  who  reuse wide ncursesw
+          header file with non-wide ncurses library.

 
 

-   --with-pc-suffix
-          If  ".pc"  files  are installed, optionally add a suffix to the
-          files  and  corresponding  package  names  to  separate unusual
-          configurations.  If  no  option  value  is  given  (or if it is
-          "none"),  no  suffix  is added. This option is used in the test
-          package for ncurses6.
+   --with-pkg-config-libdir
+          revised  option  uses the actual search path from pkg-config or
+          pkgconf using the output from --debug.

 
 

-   --with-xterm-kbs
-          Configure  xterm's terminfo entries to use either BS (^H, i.e.,
-          ASCII backspace) or DEL (^?, or 127).
+   --with-ada-libname
+          --with-form-libname
+          --with-menu-libname
+          --with-panel-libname
+          new several --with-xxx-libname options, to help with pkgsrc

 
   Portability
 
 
   Portability
 

-    MinGW
-
-   Most  of  the  portability-related work since [73]ncurses 5.9 extended
-   and improved the MinGW port introduced in [74]ncurses 5.8.
-
-   The MinGW port can be readily cross-compiled:
-     * modified  configure  script to allow creating dll's for MinGW when
-       cross-compiling.
-     * enforced Windows-style path-separator if cross-compiling,
-     * added  scripts  for  test-builds  of  cross-compiled  packages for
-       ncurses6 to MinGW.
-     * added pc-files to the MinGW cross-compiling test-packages.
-     * added script for building test-packages of binaries cross-compiled
-       to MinGW using NSIS.
-     * added  nc_mingw.h  to  installed  headers  for MinGW port; this is
-       needed for cross-compiling [75]ncurses-examples.
-     * added test-packages for cross-compiling ncurses-examples using the
-       MinGW test-packages.
-
-   The MinGW-specific Windows driver accounts for several changes:
-     * wide-character   display  is  made  usable  by  replacing  MinGW's
-       non-working wcrtomb and wctomb functions.
-     * implemented    some   display   features:   [76]beep,   [77]flash,
-       [78]curs_set.
-     * the driver handles repainting on endwin/refresh combination.
-     * modified  treatment  of  TERM  variable  for  MinGW  port to allow
-       explicit use of the Windows console driver by checking if $TERM is
-       set to "#win32console" or an abbreviation of that.
-     * the Windows driver also matches the special TERM value "unknown"
-     * the driver now returns characters for special keys, (like ansi.sys
-       does),  when  keypad mode is off, rather than returning nothing at
-       all.
-     * the  driver checks a new environment variable [79]NCURSES_CONSOLE2
-       to  optionally  work  around  a  deficiency  in  Console2 (and its
-       descendent  ConsoleZ)  which  hang  when  an application creates a
-       console buffer.
-
-   Finally, there are other improvements:
-     * MinGW  is  one  of  the  configurations  where ncurses installs by
-       default into /usr
-     * configuration   for   cross-compiling   uses   AC_CHECK_TOOLS   in
-       preference  to  AC_PATH_PROGS  when searching for ncurses*-config,
-       e.g., in Ada95/configure and test/configure.
-     * extend Windows support to work with MSYS2;
-          + this  works  with  a  scenario  where there is an ANSI-escape
-            handler such as ansicon running in the console window.
-          + wrap  isatty  calls with a macro, provide a corresponding set
-            of  support routines to address differences between MinGW and
-            MSYS2.
-     * ensure WINVER is defined in makefiles rather than using headers.
-     * add check for the gnatprep "-T" option.
-     * work  around  a  bug  introduced  by  [80]gcc 4.8.1 in MinGW which
-       breaks "trace" feature.
-     * add a driver-name method to each of the drivers.
-
-    Other ports
-
-   These changes affect certain platforms (ports):
-     * the  configure  script  knows  how  to build shared libraries with
-       DragonFlyBSD and Interix.
-     * support for AIX shared libraries is improved, tested with AIX 5.3,
-       6.1 and 7.1 with both gcc 4.2.4 and cc:
-          + the shared-library suffix for AIX 5 and 6 is now ".so"
-          + the  -brtl  option is used with AIX 5-7; it is needed to link
-            with the shared libraries.
-     * the  configure  --enable-pc-files  option  takes  into account the
-       [81]PKG_CONFIG_PATH variable.
-     * the  configure  option  --with-pkg-config-libdir  provides control
-       over the actual directory into which pc-files are installed.
-     * the  build  scripts  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.
-     * the     configure    script    disallows    conflicting    options
-       "--with-termlib" and "--enable-term-driver".
-     * the  check  for  missing  c++  compiler  to  work when no error is
-       reported,   and  no  variables  set  is  improved  (see  note  for
-       [82]20021206).
-     * the  misc/gen_edit.sh  script  selects a "linux" entry which works
-       with  the  current  kernel  rather  than  assuming  it  is  always
-       "linux3.0"
-     * the  test/configure  script  makes it simpler to override names of
-       curses-related  libraries,  to  help with linking with pdcurses in
-       MinGW environment.
-     * the  configure-script/ifdef's  allow the BSD 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.
-     * the  MKlib_gen.sh  script  works  around  a recent change in gcc 5
-       (released  [83]mid-2015)  which  essentially  emits multiple #line
-       statements for the same position in a file.
-     * the   configure  script  works  with  Minix3.2  (see  [84]note  on
-       portability)
-     * OS/2 redux:
-          + the configure script supports OS/2 kLIBC.
-          + the  --with-lib-prefix  option allows configuring for old/new
-            flavors of OS/2 EMX.
-     * improved configure-script checks for _XOPEN_SOURCE:
-          + the definition works starting with Solaris 10.
-          + the  definition  is  suppressed  for IRIX64, since its header
-            files have a conflict versus _SGI_SOURCE.
+   Many  of  the  portability  changes  are implemented via the configure
+   script:
+     * add  a  special case in the configure script to work around one of
+       the build-time breakages reported for OpenBSD 6 here:
+
+     https://www.mail-archive.com/bugs@openbsd.org/msg13200.html
+     * modify configure check for libtool to prevent accidental use of an
+       OpenBSD program which uses the same name.
+     * 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.
+     * relax modification-time comparison in CF_LINK_FUNCS to allow it to
+       accept link() function with NFS filesystems which change the mtime
+       on the link target, e.g., several BSD systems.
+     * 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.
+     * modify  CF_NCURSES_CONFIG  to work around Xcode's c99 "-W" option,
+       which conflicts with conventional use for passing linker options.
+     * modify   configure   scripts   to   filter  out  redefinitions  of
+       _XOPEN_SOURCE,  e.g., for NetBSD which generally supports 500, but
+       600 is needed for ncursesw.
+
+   Here are some of the other portability fixes:
+     * change   configure-check   and   source-code  for  gcc's  noreturn
+       attribute  to  assume  it is a prefix rather than suffix, matching
+       c11's _Noreturn convention.
+     * modify mk-1st.awk to account for extra-suffix configure option.
+     * build-fix for termsort module when configured with termcap.
+     * modify  configure  script  and  makefiles to support ".PHONY" make
+       program feature.
+     * amend  libtool  configuration  to  add dependency for install.tic,
+       etc., in ncurses/Makefile on the lower-level libraries.
+     * modify Ada95 source-generation utility to write to a file given as
+       parameter rather than to the standard output, allowing builds with
+       MinGW.
+     * amend  tic/infocmp  check  to  allow  for  the  respective  tool's
+       absence.
+     * build-fixes for gnat 10.1.1, whose gnatmake drops integration with
+       gprbuild.
+     * correct configure version-check/warning for g++ to allow for 10.x

      _________________________________________________________________
 
 Features of ncurses
      _________________________________________________________________
 
 Features of ncurses


@@ -817,7 +496,7 @@ Features of ncurses
             curses.
      * The ncurses utilities have options to allow you to filter terminfo
        entries for use with less capable curses/terminfo versions such as
             curses.
      * The ncurses utilities have options to allow you to filter terminfo
        entries for use with less capable curses/terminfo versions such as

-       the HP/UX and AIX ports.
+       the HP-UX and AIX ports.

 
    The ncurses package also has many useful extensions over SVr4:
      * The  API  is 8-bit clean and base-level conformant with the X/OPEN
 
    The ncurses package also has many useful extensions over SVr4:
      * The  API  is 8-bit clean and base-level conformant with the X/OPEN


@@ -841,6 +520,7 @@ Features of ncurses
        use of function keys, e.g., disabling the ncurses KEY_MOUSE, or by
        defining  more  than  one  control  sequence to map to a given key
        code.
        use of function keys, e.g., disabling the ncurses KEY_MOUSE, or by
        defining  more  than  one  control  sequence to map to a given key
        code.

+     * Support for direct-color terminals, such as modern xterm.

      * Support for 256-color terminals, such as modern xterm.
      * Support for 16-color terminals, such as aixterm and modern xterm.
      * Better  cursor-movement  optimization.  The package now features a
      * Support for 256-color terminals, such as modern xterm.
      * Support for 16-color terminals, such as aixterm and modern xterm.
      * Better  cursor-movement  optimization.  The package now features a


@@ -863,10 +543,10 @@ Features of ncurses
        types  even  when  no  terminfo tree or termcap file is accessible
        (this  may  be useful for support of screen-oriented programs that
        must run in single-user mode).
        types  even  when  no  terminfo tree or termcap file is accessible
        (this  may  be useful for support of screen-oriented programs that
        must run in single-user mode).

-     * The  [85]tic/[86]captoinfo  utility  provided with ncurses has the
-       ability  to  translate  many termcaps from the XENIX, IBM and AT&T
-       extension sets.
-     * A BSD-like [87]tset utility is provided.
+     * The tic/captoinfo utility provided with ncurses has the ability to
+       translate  many  termcaps  from  the XENIX, IBM and AT&T extension
+       sets.
+     * A BSD-like tset utility is provided.

      * The ncurses library and utilities will automatically read terminfo
        entries  from  $HOME/.terminfo  if  it exists, and compile to that
        directory  if  it  exists  and the user has no write access to the
      * The ncurses library and utilities will automatically read terminfo
        entries  from  $HOME/.terminfo  if  it exists, and compile to that
        directory  if  it  exists  and the user has no write access to the


@@ -881,132 +561,152 @@ Features of ncurses
        other entries in the same source file (as in System V) but also to
        compiled  entries  in  either the system terminfo directory or the
        user's $HOME/.terminfo directory.
        other entries in the same source file (as in System V) but also to
        compiled  entries  in  either the system terminfo directory or the
        user's $HOME/.terminfo directory.

-     * The  table-of-entries  utility  [88]toe makes it easy for users to
-       see exactly what terminal types are available on the system.
+     * The  table-of-entries  utility  toe makes it easy for users to see
+       exactly what terminal types are available on the system.

      * The library meets the XSI requirement that every macro entry point
      * The library meets the XSI requirement that every macro entry point

-       have  a  corresponding  function  which may be linked (and will be
+       has  a  corresponding  function  which  may be linked (and will be

        prototype-checked)  if  the  macro  definition  is  disabled  with
        #undef.
        prototype-checked)  if  the  macro  definition  is  disabled  with
        #undef.

-     * Extensive   documentation  is  provided  (see  the  [89]Additional
-       Reading section of the [90]ncurses FAQ for online documentation).
+     * Extensive  documentation  is  provided (see the Additional Reading
+       section of the ncurses FAQ for online documentation).

 
 Applications using ncurses
 
    The  ncurses  distribution  includes  a  selection  of  test  programs
    (including   a   few   games).   These  are  available  separately  as
 
 Applications using ncurses
 
    The  ncurses  distribution  includes  a  selection  of  test  programs
    (including   a   few   games).   These  are  available  separately  as

-   [91]ncurses-examples
+   ncurses-examples

 
    The   ncurses   library  has  been  tested  with  a  wide  variety  of
    applications including:
 
 
    The   ncurses   library  has  been  tested  with  a  wide  variety  of
    applications including:
 

+   aptitude
+          FrontEnd to Apt, the debian package manager
+
+          https://wiki.debian.org/Aptitude
+

    cdk
           Curses Development Kit
 
    cdk
           Curses Development Kit
 

-          [92]http://invisible-island.net/cdk/
+          https://invisible-island.net/cdk/

 
    ded
           directory-editor
 
 
    ded
           directory-editor
 

-          [93]http://invisible-island.net/ded/
+          https://invisible-island.net/ded/

 
    dialog
           the  underlying  application used in Slackware's setup, and the
           basis   for  similar  install/configure  applications  on  many
           systems.
 
 
    dialog
           the  underlying  application used in Slackware's setup, and the
           basis   for  similar  install/configure  applications  on  many
           systems.
 

-          [94]http://invisible-island.net/dialog/
+          https://invisible-island.net/dialog/

 
    lynx
           the text WWW browser
 
 
    lynx
           the text WWW browser
 

-          [95]http://lynx.isc.org/
-
-   Midnight Commander
-          file manager
-
-          [96]http://www.midnight-commander.org/
+          https://lynx.invisible-island.net/

 
    mutt
           mail utility
 
 
    mutt
           mail utility
 

-          [97]http://www.mutt.org/
+          http://www.mutt.org/

 
    ncftp
           file-transfer utility
 
 
    ncftp
           file-transfer utility
 

-          [98]http://www.ncftp.com/
+          https://www.ncftp.com/

 
    nvi
           New vi uses ncurses.
 
 
    nvi
           New vi uses ncurses.
 

-          [99]https://sites.google.com/a/bostic.com/keithbostic/nvi
+          https://sites.google.com/a/bostic.com/keithbostic/vi
+
+   ranger
+          A console file manager with VI key bindings in Python.
+
+          https://ranger.github.io/

 
    tin
           newsreader, supporting color, MIME
 
 
    tin
           newsreader, supporting color, MIME
 

-          [100]http://www.tin.org/
+          http://www.tin.org/
+
+   vifm
+          File manager with vi like keybindings
+
+          https://vifm.info/

 
    as well as some that use ncurses for the terminfo support alone:
 
    minicom
           terminal emulator for serial modem connections
 
 
    as well as some that use ncurses for the terminfo support alone:
 
    minicom
           terminal emulator for serial modem connections
 

-          [101]http://alioth.debian.org/projects/minicom/
+          https://alioth.debian.org/projects/minicom/

 
    mosh
           a replacement for ssh.
 
 
    mosh
           a replacement for ssh.
 

-          [102]https://mosh.mit.edu/
+          https://mosh.org/

 
    tack
           terminfo action checker
 
 
    tack
           terminfo action checker
 

-          [103]http://invisible-island.net/ncurses/tack.html
+          https://invisible-island.net/ncurses/tack.html

 
    tmux
           terminal multiplexor
 
 
    tmux
           terminal multiplexor
 

-          [104]http://tmux.github.io/
+          https://github.com/tmux/tmux/wiki

 
    vile
           vi-like-emacs  may  be  built  to  use the terminfo, termcap or
           curses interfaces.
 
 
    vile
           vi-like-emacs  may  be  built  to  use the terminfo, termcap or
           curses interfaces.
 

-          [105]http://invisible-island.net/vile/
+          https://invisible-island.net/vile/

 
    and finally, those which use only the termcap interface:
 
    emacs
           text editor
 
 
    and finally, those which use only the termcap interface:
 
    emacs
           text editor
 

-          [106]http://www.gnu.org/software/emacs/
+          https://www.gnu.org/software/emacs/
+
+   less
+          The  most  commonly  used  pager  (a program that displays text
+          files).
+
+          http://www.greenwoodsoftware.com/less/

 
    screen
           terminal multiplexor
 
 
    screen
           terminal multiplexor
 

-          [107]http://www.gnu.org/software/screen/
+          https://www.gnu.org/software/screen/

 
    vim
           text editor
 
 
    vim
           text editor
 

-          [108]http://www.vim.org/
+          https://www.vim.org/

 
 Development activities
 
    Zeyd  Ben-Halim  started  ncurses  from  a  previous  package pcurses,
    written  by  Pavel  Curtis.  Eric  S.  Raymond  continued development.
 
 Development activities
 
    Zeyd  Ben-Halim  started  ncurses  from  a  previous  package pcurses,
    written  by  Pavel  Curtis.  Eric  S.  Raymond  continued development.

-   Juergen  Pfeifer  wrote  most  of the form and menu libraries. Ongoing
-   development  work  is  done  by [109]Thomas Dickey. Thomas Dickey also
-   acts  as  the maintainer for the Free Software Foundation, which holds
-   the [110]copyright on ncurses.
+   Juergen Pfeifer wrote most of the form and menu libraries.
+
+   Ongoing development work is done by Thomas E. Dickey. Thomas E. Dickey
+   has  acted  as  the maintainer for the Free Software Foundation, which
+   held  a  copyright  on ncurses for releases 4.2 through 6.1. Following
+   the release of ncurses 6.1, effective as of release 6.2, copyright for
+   ncurses  reverted  to  Thomas  E.  Dickey  (see  the  ncurses  FAQ for
+   additional information).

 
    Contact the current maintainers at
 
 
    Contact the current maintainers at
 

-     [111]bug-ncurses@gnu.org
+     bug-ncurses@gnu.org

 
    To join the ncurses mailing list, please write email to
 
 
    To join the ncurses mailing list, please write email to
 

-     [112]bug-ncurses-request@gnu.org
+     bug-ncurses-request@gnu.org

 
    containing the line:
 
 
    containing the line:
 


@@ -1015,211 +715,61 @@ Development activities
    This list is open to anyone interested in helping with the development
    and testing of this package.
 
    This list is open to anyone interested in helping with the development
    and testing of this package.
 

-   Beta  versions  of ncurses and patches to the current release are made
-   available at
+   Beta versions of ncurses are made available at
+
+     ftp://ftp.invisible-island.net/ncurses/current/ and
+     https://invisible-mirror.net/archives/ncurses/current/ .
+
+   Patches to the current release are made available at

 
 

-     [113]ftp://invisible-island.net/ncurses/ .
+     ftp://ftp.invisible-island.net/ncurses/6.2/ and
+     https://invisible-mirror.net/archives/ncurses/6.2/ .

 
    There is an archive of the mailing list here:
 
 
    There is an archive of the mailing list here:
 

-     [114]http://lists.gnu.org/archive/html/bug-ncurses            (also
-     [115]https)
+     http://lists.gnu.org/archive/html/bug-ncurses (also https)

 
 Related resources
 
    The  release notes make scattered references to these pages, which may
    be interesting by themselves:
 
 Related resources
 
    The  release notes make scattered references to these pages, which may
    be interesting by themselves:

-     * [116]man2html
-     * [117]ncurses licensing
-     * [118]Symbol versioning in ncurses
-     * [119]The MinGW port of ncurses
-     * [120]tack - terminfo action checker
-     * [121]tar versus portability
-     * [122]tctest - termcap library checker
-     * [123]Terminal Database
+     * ncurses licensing
+     * Symbol versioning in ncurses
+     * Comments on ncurses versus slang (S-Lang)
+     * Comments on OpenBSD
+     * tack - terminfo action checker
+     * tctest - termcap library checker
+     * Terminal Database

 
 Other resources
 
    The  distribution  provides  a  newer  version  of the terminfo-format
 
 Other resources
 
    The  distribution  provides  a  newer  version  of the terminfo-format

-   terminal  description  file  once  maintained  by  [124]Eric Raymond .
-   Unlike  the  older version, the termcap and terminfo data are provided
-   in  the  same  file,  and  provides  several user-definable extensions
-   beyond the X/Open specification.
+   terminal description file once maintained by Eric Raymond . Unlike the
+   older  version, the termcap and terminfo data are provided in the same
+   file, which also provides several user-definable extensions beyond the
+   X/Open specification.

 
    You  can  find  lots  of  information  on  terminal-related topics not
 
    You  can  find  lots  of  information  on  terminal-related topics not

-   covered in the terminfo file at [125]Richard Shuford's archive .
-
-     * [126]Overview
-     * [127]Release Notes
-          + [128]Library improvements
-               o [129]Output buffering
-               o [130]Symbol versioning
-               o [131]Miscellaneous
-          + [132]Program improvements
-               o [133]Utilities
-               o [134]Examples
-          + [135]Terminal database
-          + [136]Documentation
-          + [137]Interesting bug-fixes
-          + [138]Configuration changes
-               o [139]Major changes
-               o [140]Configuration options
-          + [141]Portability
-               o [142]MinGW
-               o [143]Other ports
-     * [144]Features of ncurses
-     * [145]Applications using ncurses
-     * [146]Development activities
-     * [147]Related resources
-     * [148]Other resources
-
-References
-
-   1. http://invisible-island.net/ncurses/man/captoinfo.1m.html
-   2. http://invisible-island.net/ncurses/man/clear.1.html
-   3. http://invisible-island.net/ncurses/man/infocmp.1m.html
-   4. http://invisible-island.net/ncurses/man/tabs.1.html
-   5. http://invisible-island.net/ncurses/man/tic.1m.html
-   6. http://invisible-island.net/ncurses/man/toe.1m.html
-   7. http://invisible-island.net/ncurses/man/tput.1.html
-   8. http://invisible-island.net/ncurses/man/tset.1.html
-   9. ftp://ftp.gnu.org/gnu/ncurses/
-  10. ftp://invisible-island.net/ncurses/
-  11. http://invisible-island.net/ncurses/tctest.html
-  12. http://invisible-island.net/ncurses/ncurses-examples.html
-  13. http://lists.gnu.org/archive/html/bug-ncurses/2012-07/msg00029.html
-  14. http://invisible-island.net/ncurses/NEWS.html#t20050101
-  15. http://invisible-island.net/ncurses/announce-5.5.html
-  16. http://invisible-island.net/ncurses/ncurses-mapsyms.html
-  17. http://invisible-island.net/ncurses/man/curs_initscr.3x.html#h3-initscr
-  18. http://invisible-island.net/ncurses/man/curs_initscr.3x.html#h3-newterm
-  19. http://invisible-island.net/ncurses/man/curs_terminfo.3x.html#h3-Initialization
-  20. http://invisible-island.net/ncurses/man/ncurses.3x.html#h3-NCURSES_NO_SETBUF
-  21. http://invisible-island.net/ncurses/man/curs_terminfo.3x.html
-  22. http://invisible-island.net/ncurses/man/curs_kernel.3x.html#h3-reset_prog_mode_-reset_shell_mode
-  23. http://invisible-island.net/ncurses/man/curs_kernel.3x.html#h3-reset_prog_mode_-reset_shell_mode
-  24. http://invisible-island.net/ncurses/man/curs_printw.3x.html
-  25. http://invisible-island.net/ncurses/ncurses-mapsyms.html
-  26. http://invisible-island.net/ncurses/tack.html
-  27. http://invisible-island.net/ncurses/man/curs_util.3x.html#h3-use_tioctl
-  28. http://invisible-island.net/ncurses/man/curs_opaque.3x.html
-  29. http://invisible-island.net/ncurses/man/curs_attr.3x.html#h2-PORTABILITY
-  30. http://invisible-island.net/ncurses/man/form_field_opts.3x.html
-  31. http://invisible-island.net/ncurses/man/curs_util.3x.html#h3-putwin_getwin
-  32. http://invisible-island.net/ncurses/man/curs_util.3x.html#h3-putwin_getwin
-  33. http://invisible-island.net/ncurses/man/curs_terminfo.3x.html#h3-Formatting-Output
-  34. http://invisible-island.net/ncurses/tctest.html
-  35. http://invisible-island.net/ncurses/tctest.html#my-better-translation
-  36. http://invisible-island.net/ncurses/NEWS.html#t980103
-  37. https://svnweb.freebsd.org/base/head/lib/libc/gen/getcap.c?revision=244092&view=markup#l784
-  38. http://invisible-island.net/ncurses/ncurses-examples.html
-  39. http://invisible-island.net/ncurses/man/curs_util.3x.html#h3-use_env
-  40. http://invisible-island.net/ncurses/man/curs_window.3x.html#h3-derwin
-  41. http://invisible-island.net/ncurses/man/curs_window.3x.html#h3-mvwin
-  42. http://invisible-island.net/ncurses/man/form_driver.3x.html#h3-form_driver_w
-  43. http://invisible-island.net/ncurses/terminfo.src.html#toc-_M_L_T_E_R_M
-  44. http://invisible-island.net/ncurses/terminfo.src.html#tic-nsterm
-  45. http://invisible-island.net/ncurses/terminfo.src.html#tic-putty-sco
-  46. http://invisible-island.net/ncurses/terminfo.src.html#tic-teken
-  47. http://invisible-island.net/ncurses/terminfo.src.html#toc-_T_E_R_M_I_N_A_T_O_R
-  48. http://invisible-island.net/ncurses/terminfo.src.html#toc-_T_E_R_M_I_N_O_L_O_G_Y
-  49. http://invisible-island.net/ncurses/terminfo.src.html#tic-tmux
-  50. http://invisible-island.net/ncurses/terminfo.src.html#toc-_S_I_M_P_L_E_T_E_R_M
-  51. http://invisible-island.net/ncurses/terminfo.src.html#tic-vte
-  52. http://invisible-island.net/ncurses/terminfo.src.html#tic-vt520ansi
-  53. http://aerie.jexium-island.net/ncurses/man/clear.1.html
-  54. http://invisible-island.net/ncurses/terminfo.src.html#tic-xterm_sl
-  55. http://invisible-island.net/ncurses/terminfo.src.html#tic-xterm-1005
-  56. http://invisible-island.net/ncurses/terminfo.src.html#tic-xterm-1006
-  57. http://invisible-island.net/ncurses/NEWS.html
-  58. http://invisible-island.net/scripts/man2html.html
-  59. http://invisible-island.net/ncurses/NCURSES-Programming-HOWTO.html
-  60. http://invisible-island.net/ncurses/NEWS.html#t20110319
-  61. http://invisible-island.net/ncurses/NEWS.html#t20021221
-  62. http://invisible-island.net/ncurses/man/curs_color.3x.html#h3-Routine-Descriptions
-  63. http://invisible-island.net/ncurses/man/default_colors.3x.html
-  64. http://invisible-island.net/ncurses/man/curs_color.3x.html#h3-Routine-Descriptions
-  65. http://invisible-island.net/ncurses/man/resizeterm.3x.html
-  66. http://invisible-island.net/ncurses/NEWS.html#t980725
-  67. http://invisible-island.net/ncurses/NEWS.html#t960418
-  68. http://invisible-island.net/ncurses/NEWS.html#t970405
-  69. http://invisible-island.net/ncurses/man/curs_initscr.3x.html#h3-set_term
-  70. http://invisible-island.net/ncurses/man/curs_initscr.3x.html#h3-delscreen
-  71. http://invisible-island.net/ncurses/man/curs_terminfo.3x.html#h3-Formatting-Output
-  72. http://docs.oracle.com/cd/E19253-01/html/817-0552/fhkpy.html
-  73. http://invisible-island.net/ncurses/announce-5.9.html
-  74. http://invisible-island.net/ncurses/announce-5.8.html
-  75. http://invisible-island.net/ncurses/ncurses-examples.html
-  76. http://invisible-island.net/ncurses/man/curs_beep.3x.html
-  77. http://invisible-island.net/ncurses/man/curs_beep.3x.html
-  78. http://invisible-island.net/ncurses/man/curs_kernel.3x.html#h3-curs_set
-  79. http://invisible-island.net/ncurses/man/ncurses.3x.html#h3-NCURSES_CONSOLE2
-  80. http://stackoverflow.com/questions/20877689/gcc-4-8-1-minggw-d-option-does-not-work-as-usual
-  81. http://linux.die.net/man/1/pkg-config
-  82. http://invisible-island.net/ncurses/NEWS.html#t20021206
-  83. https://gcc.gnu.org/gcc-5/
-  84. http://invisible-island.net/autoconf/portability-test.html
-  85. http://invisible-island.net/ncurses/man/tic.1m.html
-  86. http://invisible-island.net/ncurses/man/captoinfo.1m.html
-  87. http://invisible-island.net/ncurses/man/tset.1.html
-  88. http://invisible-island.net/ncurses/man/toe.1m.html
-  89. http://invisible-island.net/ncurses/ncurses.faq.html#additional_reading
-  90. http://invisible-island.net/ncurses/ncurses.faq.html
-  91. http://invisible-island.net/ncurses/ncurses-examples.html
-  92. http://invisible-island.net/cdk/
-  93. http://invisible-island.net/ded/
-  94. http://invisible-island.net/dialog/
-  95. http://lynx.isc.org/
-  96. http://www.midnight-commander.org/
-  97. http://www.mutt.org/
-  98. http://www.ncftp.com/
-  99. https://sites.google.com/a/bostic.com/keithbostic/nvi
- 100. http://www.tin.org/
- 101. http://alioth.debian.org/projects/minicom/
- 102. https://mosh.mit.edu/
- 103. http://invisible-island.net/ncurses/tack.html
- 104. http://tmux.github.io/
- 105. http://invisible-island.net/vile/
- 106. http://www.gnu.org/software/emacs/
- 107. http://www.gnu.org/software/screen/
- 108. http://www.vim.org/
- 109. mailto:dickey@invisible-island.net
- 110. http://invisible-island.net/ncurses/ncurses-license.html
- 111. mailto:bug-ncurses@gnu.org
- 112. mailto:bug-ncurses-request@gnu.org
- 113. ftp://invisible-island.net/ncurses/
- 114. http://lists.gnu.org/archive/html/bug-ncurses
- 115. https://lists.gnu.org/archive/html/bug-ncurses
- 116. http://invisible-island.net/scripts/man2html.html
- 117. http://invisible-island.nethttp://invisible-island.net/ncurses/ncurses-license.html
- 118. http://invisible-island.net/ncurses/ncurses-mapsyms.html
- 119. http://invisible-island.net/ncurses/ncurses-mingw.html
- 120. http://invisible-island.net/ncurses/tack.html
- 121. http://invisible-island.net/autoconf/portability-tar.html
- 122. http://invisible-island.net/ncurses/tctest.html
- 123. http://invisible-island.net/ncurses/ncurses.html#download_database
- 124. http://www.catb.org/~esr/terminfo/
- 125. http://web.archive.org/web/*/http://www.cs.utk.edu/~shuford/terminal
- 126. file:///usr/build/ncurses/ncurses-6.0-20150808/doc/html/announce.html#h2-overview
- 127. file:///usr/build/ncurses/ncurses-6.0-20150808/doc/html/announce.html#h2-release-notes
- 128. file:///usr/build/ncurses/ncurses-6.0-20150808/doc/html/announce.html#h3-library
- 129. file:///usr/build/ncurses/ncurses-6.0-20150808/doc/html/announce.html#h3-lib-setbuf
- 130. file:///usr/build/ncurses/ncurses-6.0-20150808/doc/html/announce.html#h3-lib-versioning
- 131. file:///usr/build/ncurses/ncurses-6.0-20150808/doc/html/announce.html#h3-lib-other
- 132. file:///usr/build/ncurses/ncurses-6.0-20150808/doc/html/announce.html#h3-programs
- 133. file:///usr/build/ncurses/ncurses-6.0-20150808/doc/html/announce.html#h4-utilities
- 134. file:///usr/build/ncurses/ncurses-6.0-20150808/doc/html/announce.html#h4-examples
- 135. file:///usr/build/ncurses/ncurses-6.0-20150808/doc/html/announce.html#h3-database
- 136. file:///usr/build/ncurses/ncurses-6.0-20150808/doc/html/announce.html#h3-documentation
- 137. file:///usr/build/ncurses/ncurses-6.0-20150808/doc/html/announce.html#h3-bug-fixes
- 138. file:///usr/build/ncurses/ncurses-6.0-20150808/doc/html/announce.html#h3-config-config
- 139. file:///usr/build/ncurses/ncurses-6.0-20150808/doc/html/announce.html#h4-config-major
- 140. file:///usr/build/ncurses/ncurses-6.0-20150808/doc/html/announce.html#h4-config-options
- 141. file:///usr/build/ncurses/ncurses-6.0-20150808/doc/html/announce.html#h3-portability
- 142. file:///usr/build/ncurses/ncurses-6.0-20150808/doc/html/announce.html#h4-port-mingw
- 143. file:///usr/build/ncurses/ncurses-6.0-20150808/doc/html/announce.html#h4-port-systems
- 144. file:///usr/build/ncurses/ncurses-6.0-20150808/doc/html/announce.html#h2-features
- 145. file:///usr/build/ncurses/ncurses-6.0-20150808/doc/html/announce.html#h2-who-uses
- 146. file:///usr/build/ncurses/ncurses-6.0-20150808/doc/html/announce.html#h2-development
- 147. file:///usr/build/ncurses/ncurses-6.0-20150808/doc/html/announce.html#h2-this-stuff
- 148. file:///usr/build/ncurses/ncurses-6.0-20150808/doc/html/announce.html#h2-other-stuff
+   covered  in  the  terminfo  file  at  Richard  Shuford's archive . The
+   collection of computer manuals at bitsavers.org has also been useful.
+
+     * Overview
+     * Release Notes
+          + Library improvements
+               o New features
+               o Other improvements
+          + Program improvements
+               o Utilities
+               o Examples
+          + Terminal database
+          + Documentation
+          + Interesting bug-fixes
+          + Configuration changes
+               o Major changes
+               o Configuration options
+          + Portability
+     * Features of ncurses
+     * Applications using ncurses
+     * Development activities
+     * Related resources
+     * Other resources