ncurses 6.2 - patch 20200718

[ncurses.git] / ANNOUNCE

diff --git a/ANNOUNCE b/ANNOUNCE
index 8bda60e2f074cc2ab7ca9afa82649525f969f0c5..e0603d622394c8420f71cd0465476b18b41749df 100644 (file)
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -1,4 +1,4 @@
-                            Announcing ncurses 6.1
+                            Announcing ncurses 6.2

 
 Overview
 
 
 Overview
 


@@ -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


@@ -26,611 +26,374 @@ 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 at ncurses' [9]homepage:
+   The ncurses distribution is available at ncurses' homepage:

 
 

-     [10]ftp://ftp.invisible-island.net/ncurses/ or
-     [11]https://invisible-mirror.net/archives/ncurses/ .
+     ftp://ftp.invisible-island.net/ncurses/ or
+     https://invisible-mirror.net/archives/ncurses/ .

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

-     [12]ftp://ftp.gnu.org/gnu/ncurses/ .
+     ftp://ftp.gnu.org/gnu/ncurses/ .

 
 Release Notes
 
 
 Release Notes
 

-   These notes are for ncurses 6.1, released January 27, 2018.
+   These notes are for ncurses 6.2, released February 12, 2020.

 
    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  6.0; providing extensions to the application binary interface
+   through  6.1; providing extensions to the application binary interface

    (ABI).  Although  the  source  can  still be configured to support the
    (ABI).  Although  the  source  can  still be configured to support the

-   ncurses  5  ABI, the intent of the release is to provide extensions to
-   the ncurses 6 ABI:
-     * improve integration of tput and tset
-     * provide support for extended numeric capabilities.
+   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.
 
 
    There  are,  of  course,  numerous  other improvements, listed in this
    announcement.
 

-   The  release notes also mention some bug-fixes, but are focused on new
-   features  and  improvements  to  existing  features  since ncurses 6.0
-   release.
+   The  most  important  bug-fixes/improvements  dealt  with user-defined
+   capabilities  in terminal descriptions. The release notes also mention
+   some other bug-fixes, but are focused on new features and improvements
+   to existing features since ncurses 6.1 release.

 
   Library improvements
 
     New features
 
 
   Library improvements
 
     New features
 

-   The  improved  integration of tput and tset made only small changes to
-   the  libraries.  However,  supporting  extended  numeric  capabilities
-   required a few changes:
-     * The  TERMINAL  structure  in  <term.h>  is  now opaque. Doing that
-       allowed  making the structure larger, to hold the extended numeric
-       data.
-       A   few   applications  required  changes  during  development  of
-       ncurses 6.1 because those applications misused the members of that
-       structure,   e.g.,   directly   modifying  it  rather  than  using
-       [13]def_prog_mode.
-     * Having  made  TERMINAL  opaque  (and  because  none of the library
-       functions  use  anything  except  a  pointer  to TERMINAL), it was
-       possible to increase the size of the structure, adding to the end.
-       Existing   applications  which  were  linked  to  the  ncurses 6.0
-       high-level   (ncurses,  ncursesw)  and  low-level  (tinfo,  tinfo)
-       libraries should not require re-linking since the binary interface
-       did  not  change,  nor  did  the  structure  offsets with TERMINAL
-       change.
-       A  few  applications use the inner TERMTYPE structure's offsets to
-       refer to terminfo capabilities within that structure. Again, those
-       do  not require modification because their offsets within TERMINAL
-       did not change.
-     * When configured for wide-characters, i.e., "ncursesw" the TERMINAL
-       structure is extended.
-       The  new  data in TERMINAL holds the same information as TERMTYPE,
-       but  with  larger  numbers  ("int"  versus  "short").  It is named
-       TERMTYPE2.
-       The  library  uses  this  structure  internally  in  preference to
-       TERMTYPE,   referring  to  TERMTYPE  only  to  initialize  it  for
-       applications that use the capabilities defined in <term.h>
-     * When  configured  for  8-bit  (narrow)  characters,  the TERMTYPE2
-       structure is not used.
-     * The updated application binary interface is 6.1.20171230 (used for
-       new  [14]versioned  symbols),  although the interface changes were
-       developed several months previously.
-
-   The  motivation  for  making  this  extension  came from noticing that
-   [15]termcap  applications  could  (though  not  [16]realistically) use
-   larger numbers than would fit in 16-bits, and the fact that the number
-   of  color  pairs  for  a  256-color  xterm  could  not be expressed in
-   terminfo  (i.e.,  32767  versus  65536). Also, a few terminals support
-   direct-colors, which could use the extension.
-
-   Generally  speaking,  applications  that  use  internal  details  of a
-   library  are unsupported. There was exactly one exception for ncurses:
-   the  tack  program  used  the internal details of TERMINAL, because it
-   provides  an  ncurses-specific  feature  for interactively modifying a
-   terminfo   description  and  writing  the  updated  description  to  a
-   text-file.  It  was  possible  to  not  only  separate tack from these
-   [17]internal  details  of  ncurses,  but  to generalize it so that the
-   program   works   with  Unix  curses  (omitting  the  ncurses-specific
-   feature). That was released as [18]tack 1.08 in July 2017.
-
-   While  making changes to tack to eliminate its dependency upon ncurses
-   internals,  the  publicly-visible  details  of  those  internals  were
-   reviewed,  and  some symbols were moved to private header files, while
-   others were marked explicitly as ncurses internals. Future releases of
-   ncurses  may  eliminate  some  of those symbols (such as those used by
-   tack 1.07) because they are neither part of the API or the ABI.
-
-   Using  the  TERMTYPE2 extended numeric capabilities, it is possible to
-   support  both  color  pair  values and color values past 32767. Taking
-   compatibility into account, developers readily understand that neither
-   function  signatures  nor  structure  offsets  change.  Also, existing
-   functions have to operate with the extended numbers. Most of that work
-   is  internal  to  the  library.  For the external interfaces, a hybrid
-   approach was used:
-     * X/Open  Curses  defined function prototypes such as wattr_set with
-       an  unused parameter, for "future" use. After 25 years, the future
-       is  here:  ncurses uses the parameter to augment color pair values
-       as described in the [19]manual page.
-     * Other  functions such as those defining color pairs did not have a
-       corresponding  reserved  parameter.  For  those,  ncurses  defines
-       extended  versions  such as init_extended_pair (versus init_pair),
-       init_extended_color (versus init_color).
+   There are several new features:
+     * O_EDGE_INSERT_STAY  tells  the  form  library  to optionally delay
+       cursor movement on a field edge/boundary
+     * O_INPUT_FIELD  extension to form library allows a dynamic field to
+       shrink if the new limit is smaller than the current field size.
+     * added  exit_curses  and  exit_terminfo to replace internal symbols
+       for leak-checking.
+     * added curses_trace, to replace trace().

 
    Additionally,  to  improve  performance other changes (and extensions)
    are provided in this release:
 
    Additionally,  to  improve  performance other changes (and extensions)
    are provided in this release:

-     * Several  new  functions simplify management of large sets of color
-       pairs: reset_color_pairs, alloc_pair, find_pair and free_pair.
-     * New "RGB" extension capability for direct-color support is used to
-       improve performance of color_content.
-     * The  internal colorpair_t is now a struct, eliminating an internal
-       8-bit limit on colors
-     * Allocation  for  SCREEN's  color-pair table starts small, grows on
-       demand up to the limit given in the terminal description.
-     * setcchar and getcchar now treat a negative color-pair as an error.
+     * mouse  decoding  now handles shift/control/alt logic when decoding
+       xterm's 1006 mode
+     * ncurses  now  defines a limit for wgetnstr, wgetn_wstr when length
+       is negative or "too large".
+     * reordered  loop-limit checks in winsnstr in case the string has no
+       terminating null and only the number of characters is used.
+     * there  is  now  no  buffer-size  limit  when  reading the $TERMCAP
+       variable.
+     * the  $TERMCAP  variable  may  be  interpreted  as  a fallback to a
+       terminfo entry
+     * mvcur  now decides whether to use hard-tabs, using xt, tbc and hts
+       as clues.
+     * extended  colors  are  improved  by  modifying an internal call to
+       vid_puts  to pass extended color pairs e.g., from tty_update.c and
+       lib_mvcur.c
+     * the  initialization  functions  now  avoid relying upon persistent
+       data for the result from getenv
+     * scrolling is improved:
+          + a limit check in newline_forces_scroll handles the case where
+            the row is inside scroll-margins, but not at the end.
+          + improved loop limits in _nc_scroll_window handle a case where
+            the scrolled data is a pad which is taller than the window.

 
     Other improvements
 
 
     Other improvements
 

-   These are new or revised features:
-     * modify  c++/etip.h.in  to  accommodate  deprecation  of  throw and
-       throws in c++17
-     * add new function unfocus_current_field
-     * add option to preserve leading whitespace in form fields
-     * 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.
-     * add  build-time  utility  report_offsets  to  help  show  when the
-       various configurations of tinfo library are compatible or not.
+   These are revised features:
+     * used  "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.
+     * modified  wbkgd  and  wbkgrnd  to  improve compatibility with SVr4
+       curses,  changing the way the window rendition is updated when the
+       background character is modified
+     * improved  terminfo  write/read by modifying the fourth item of the
+       extended  header  to  denote  the  number  of valid strings in the
+       extended string table (see term(5)).
+     * modified   the   initialization  checks  for  mouse  so  that  the
+       xterm+sm+1006  block  will  work  with  terminal  descriptions not
+       mentioning xterm.

 
    These were done to limit or ultimately deprecate features:
 
    These were done to limit or ultimately deprecate features:

-     * drop  two  symbols  obsoleted  in  2004:  _nc_check_termtype,  and
-       _nc_resolve_uses
-     * move  _nc_tracebits,  _tracedump and _tracemouse to curses.priv.h,
-       since they are not part of the suggested ABI6.
-     * mark  some  structs  in  form/menu/panel  libraries as potentially
-       opaque without modifying API/ABI.
-     * ifdef'd     header-file    definition    of    mouse_trafo    with
-       NCURSES_NOMACROS
-     * remove  initialization-check  for calling napms in the term-driver
-       configuration; none is needed.
-     * modify trace to avoid overwriting existing file
+     * deprecated  safe-sprintf, since the vsnprintf function, which does
+       what was needed, was standardized long ago.
+     * marked   vwprintw  and  vwscanw  as  deprecated;  recommend  using
+       vw_printw and vw_scanw, respectively.
+     * added  deprecation warnings for internal functions called by older
+       versions of tack.
+     * removed unused _nc_import_termtype2 function.

 
    These are improvements to existing features:
 
    These are improvements to existing features:

-     * modify   make_hash   to  allow  building  with  address-sanitizer,
-       assuming that --disable-leaks is configured.
-     * move  SCREEN field for use_tioctl data before the ncursesw fields,
-       and  limit  that  to the sp-funcs configuration to improve termlib
-       compatibility
-     * modify db-iterator:
-          + ignore zero-length files in db-iterator; these are useful for
-            instance to suppress $HOME/.terminfo when not wanted.
-          + modify  update_getenv  to  ensure  that environment variables
-            which  are  not  initially  set  will  be checked later if an
-            application happens to set them
-     * 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.
-     * modify set_curterm to update ttytype[] data used by longname/p>
-     * 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.
-     * remove an early-return from _nc_do_color, which can interfere with
-       data  needed  by  bkgd  when  ncurses  is configured with extended
-       colors
-     * incorporate A_COLOR mask into COLOR_PAIR, in case user application
-       provides an out-of-range pair number
-     * 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 the sample program dots_mvcur
-       for the term-driver configuration.
+     * check parameter of set_escdelay, return ERR if negative.
+     * check  parameter  of  set_tabsize,  return ERR if not greater than
+       zero
+     * 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.
+     * amend check for repeat_char to handle a case where setlocale() was
+       called after initscr
+     * move macro for is_linetouched inside NCURSES_NOMACROS ifndef.
+     * use _nc_copy_termtype2 rather than direct assignment in setupterm,
+       in   case   it   is  called  repeatedly  using  fallback  terminfo
+       descriptions
+     * improve   workaround   for  Solaris  wcwidth  versus  line-drawing
+       characters
+     * add  checks  in repair_subwindows to keep the current position and
+       scroll-margins inside the resized subwindow.
+     * correct  a  buffer-limit  in  write_entry.c  for  systems that use
+       caseless filenames.
+     * improved build-time utility report_offsets:
+          + add categories, 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.
+          + add  NCURSES_GLOBALS  and NCURSES_PRESCREEN to report to show
+            how similar the different libtinfo configurations are.
+     * modified  some header files to ensure that those include necessary
+       files except for the previously-documented cases
+     * added  some  traces  in  initialization to show whether a fallback
+       entry is used.
+     * made minor optimization to reduce calls to _nc_reserve_pairs

 
    These are corrections to existing features:
 
    These are corrections to existing features:

-     * fixes for writing extended color pairs in putwin.
-     * modify no-leaks code for lib_cur_term.c to account for the tgetent
-       cache.
-     * amend handling of the repeat_char capability in EmitRange to avoid
-       scope  creep:  translate  the character to the alternate character
-       set  when  the  alternate character set is enabled, and do not use
-       repeat_char for characters past 255.
-     * improve    wide-character    implementation    of   myADDNSTR   in
-       frm_driver.c,    which    was   inconsistent   with   the   normal
-       implementation.
-     * 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.
-     * 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  wattr_set  and wattr_get to return ERR if win-parameter is
-       null, as documented.
-     * correct   order  of  initialization  for  traces  in  use_env  and
-       use_tioctl versus first _tracef calls.
-     * correct parameters for copywin call in _nc_Synchronize_Attributes
-     * 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.
-     * 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.
-     * correct return-value of extended putwin.
-     * double-width  multibyte  characters  were  not counted properly in
-       winsnstr and wins_nwstr.
-     * amend  fix  for  _nc_ripoffline from 20091031 to make test/ditto.c
-       work in threaded configuration.
-     * 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.
-     * add missing assignment in lib_getch.c to make notimeout work
+     * 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.
+     * corrected  flag  for "seq" method of db 1.8.5 interface, needed by
+       toe on some of the BSDs.
+     * modify  comparison  in  make_hash.c  to  correct a special case in
+       collision handling for Caps-hpux11
+     * add    extended_slk_color{,_sp}   symbols   to   the   appropriate
+       package/*.{map,sym} files
+     * modify  lib_setup  to  avoid  calling pthread_self() without first
+       verifying that the address is valid, i.e., for weak symbols
+     * add  a  couple  of  broken-linker symbols to the list of versioned
+       symbols to help with link-time optimization versus weak symbols.

 
   Program improvements
 
 
   Program improvements
 

-   While reviewing user feedback, it became apparent that the differences
-   between [20]reset (an alias for tset) and "tput reset" were confusing:
-     * one  ([21]tset)  updated the terminal modes, but used only part of
-       the terminfo capabilities for initialization, while
-     * the  other  ([22]tput) used all of the terminal capabilities while
-       neglecting the terminal modes.
-
-   On  further  investigation,  it  turned  out that the differences were
-   largely an accident due to the way those programs had evolved.
-
-   This  release  eliminates  the unnecessary differences, using the same
-   approach  for tput's init (initialization), reset and clear operations
-   as  the separate [23]reset and [24]clear programs. Doing this does not
-   change the command-line options; existing scripts are unaffected.
-
-   These  are the user-visible changes for the three programs (tput, tset
-   and clear):
-     * add  the  terminal-mode  parts  of "reset" (aka tset) to the "tput
-       reset"  command,  making  the  two  almost  the  same  except  for
-       window-size.
-     * improve  tput's  check  for  being  called as "init" or "reset" to
-       allow for transformed names.
-     * add "clear" as a possible link/alias to tput.
-     * 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.
-     * add -x option to clear/tput to make the E3 extension optional
-     * add functionality of "tset -w" to tput, like the "-c" feature this
-       is not optional in tput.
-     * add  options  -T  and  -V  to clear command for compatibility with
-       tput.
-     * drop long-obsolete "-n" option from tset.
-     * 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 library
-       in 4.3BSD did this to avoid using the short 2-character name
-     * remove  a  restriction  in  tput's support for termcap names which
-       omitted capabilities normally not shown in termcap translations
-     * add usage message to clear command
-     * improve usage messages for tset and tput.
-
-   Other user-visible improvements and new features include:
-     * modify  tic/infocmp  display  of numeric values to use hexadecimal
-       when  they  are  "close" to a power of two, making the result more
-       readable.
-     * 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.
-          + If  "-f"  option  splits  line,  do not further split it with
-            "-W".
-          + Begin a new line when adding "use=" after a wrapped line.
-     * add  "-q"  option  to infocmp to suppress the "Reconstructed from"
-       comment  from  the  header,  and  a corresponding option to tic to
-       suppress all comments from the "tic -I" output.
-     * Sorted options in usage message for infocmp, to make it simpler to
-       see unused letters.
-     * Updated usage message for tic, adding "-0" option.
-     * add infocmp/tic "-Q" option, which allows one to dump the compiled
-       form of the terminal entry, in hexadecimal or base64:
-          + A  "b64:"  prefix in the TERMINFO variable tells the terminfo
-            reader  to  use  base64  according  to  RFC-3548  as  well as
-            RFC-4648 url/filename-safe format.
-          + A   "hex:"   prefix  tells  the  terminfo  reader  to  accept
-            hexadecimal data as generated by "infocmp -0qQ1".
-
-   Other less-visible improvements and new features include:
-     * modify  utility headers such as tic.h to make it clearer which are
-       externals that are used by tack.
-     * add  "reset"  to  list  of  programs  whose  names might change in
-       manpages due to program-transformation configure options.
-     * modify  "-T" option of clear and tput to call use_tioctl to obtain
-       the operating system's notion of the screensize if possible.
-     * add  check  in  tput for init/reset operands to ensure those use a
-       terminal.
-     * modify  programs clear, tabs, tput and tset to pass the actual tty
-       file  descriptor  to  setupterm rather than the standard output or
-       error, making padding work.
-     * 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.
-     * 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.
-     * improve  error message from tset/reset when both stderr/stdout are
-       redirected to a file or pipe.
-
-   Several  of  the  less  apparent  features  deal  with  translation of
-   terminfo  to  termcap  (and the reverse), with corresponding checks by
-   tic:
-     * modify check in fmt_entry to handle a cancelled reset string. Make
-       similar fixes in other parts of dump_entry.c and tput.c
-     * 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 "@, -".
-     * correct  a warning from tic about keys which are the same, to skip
-       over missing/cancelled values.
-     * 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 unnecessary use of "2" to denote a shifted
-       special key.
-     * 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.
-     * improve  checks  in trim_sgr0, comp_parse.c and parse_entry.c, for
-       cancelled string capabilities.
-     * add  check in tic for some syntax errors of delays, as well as use
-       of proportional delays for non-line capabilities.
-     * add  check  in  tic  for  conflict between ritm, rmso, rmul versus
-       sgr0.
-     * add  check  in _nc_parse_entry for invalid entry name, setting the
-       name to "invalid" to avoid problems storing entries.
-     * 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.
-     * remove  tic  warning  about "^?" in string capabilities, which was
-       marked  as  an extension; however all Unix implementations support
-       this  and  X/Open  Curses  does not address it. On the other hand,
-       [25]BSD   termcap   did   not  support  this  feature  (until  the
-       [26]mid-1990s).
-       in  _nc_infotocap,  added  a check to ensure that terminfo "^?" is
-       not written to termcap.
-     * 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_tic_expand and _nc_infotocap, improved string-length check
-       when  deciding  whether  to  use "^X" or "\xxx" format for control
-       characters, to make the output of tic/infocmp more predictable.
-     * limited  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.
+   Several improvements were made to the utility programs:

 
 

-    Examples
+   clear

 
 

-   Along  with  the library and utilities, many improvements were made to
-   the [27]ncurses-examples.
-
-   These changes were made to demonstrate new extensions in ncurses:
-     * add   demo_new_pair   program,   to   demonstrate  [28]alloc_pair,
-       [29]find_pair and [30]free_pair functions.
-       This  program  iterates  over  the  possible  color  combinations,
-       allocating  or  initializing color pairs. For best results, choose
-       screen-width dividing evenly into the number of colors. e.g.,
-
-     32x64,32x128   256 colors
-     24x44,24x88    88 colors
-     32x64,24x128   16 colors
-
-     * add  extended_color program, like the older color_set program, but
-       using   the   extended  color  functions,  with  and  without  the
-       SP-functions interface.
-     * add  picsmap  program  to  fill  in some testing issues not met by
-       dots,  using  this  as  the  third  example in a comparison of the
-       [31]ncurses versus slang libraries.
-       The   program  can  directly  read  X  bitmap  and  pixmap  files,
-       displaying  a  picture.  It  can  read  other  image  files  using
-       ImageMagick's convert program to translate the image into text.
-       For 16-, 88- and 256-color terminal descriptions, picsmap can load
-       a  palette file which tells it which color palette entries to use.
-       For direct-colors, the terminal descriptions use the RGB extension
-       capability.
+          + improved  logic  for  clearing with the 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

 
 

-   There are other new example programs and a few scripts:
-     * add  dots_xcurses  program to illustrate a different approach used
-       for extended colors which can be contrasted with dots_curses.
-     * add  list_keys program show function keys for one or more terminal
-       descriptions.  It  uses  ncurses's  convention  of  modifiers  for
-       special keys, based on xterm.
-     * add  padview  program,  to compare pads with direct updates in the
-       view program.
-     * add sp_tinfo program to exercise the SP-functions extension of the
-       low-level terminfo library.
-     * add test-programs for termattrs and term_attrs functions.
-     * add  test_sgr  program  to  exercise  all  combinations of the sgr
-       capability.
-     * add   tput-colorcube   demo  script,  imitating  xterm's  88-  and
-       256-color scripts using tput.
-     * add  tput-initc  script  to  demonstrate  how  tput may be used to
-       initialize a color palette from a data file.
+   infocmp
+
+          + omit  filtering  of  "OTxx" names which are used for obsolete
+            capabilities,  when  the output is sorted by long-names. This
+            change helps when making a table of the short/long capability
+            names.
+
+   tic
+
+          + added   check   for   consistent   alternate   character  set
+            capabilities.
+          + added check for paired indn/rin.
+          + added check for terminals with parm_dch vs parm_ich.
+          + added  check  for  the  case  where setf/setb are given using
+            different   strings,   but   provide   identical  results  to
+            setaf/setab.
+          + corrected check for ich1.
+          + changed  a  too-large  terminal entry from a fatal error to a
+            warning.
+
+   toe
+
+          + ignores  any  hex/b64 $TERMINFO value in the list of terminfo
+            databases.
+
+   tset
+
+          + replace  check  in reset command for obsolete "pt" capability
+            using tbc and hts capabilities as clues
+          + modify reset to allow for tabstops at intervals other than 8.
+          + 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.
+
+   tput
+
+          + add "x" to getopt string so that "tput -x clear" works.
+
+   Several  changes were made to the generated ncurses*config scripts and
+   the   analogous   ".pc"   files  to  reduce  differences  between  the
+   configurations they report:
+     * modified the ncurse*-config and pc-files to more closely match for
+       the -I and -l options.
+     * filtered out linker-specs from the --libs report.
+     * amended  the ncurses*-config and pc-files to take into account the
+       rpath hack which differed between those files.
+     * modified  generated  ncurses*config  and  ncurses.pc, ncursesw.pc,
+       etc., to list helper libraries such as gpm for static linking.
+
+    Examples
+
+   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:
+     * improve  recovery  from  error  when  reading command-character in
+       test/ncurses.c, showing the relevant error message and not exiting
+       on EINTR.
+     * improve  tracemunch,  by keeping track of TERMINAL* values, and if
+       tracing  was first turned on after initialization, attempt to show
+       distinct screen, window and terminal names anyway.
+     * modify tracemunch to accept filename parameters in addition to use
+       as a pipe/filter.
+     * update  tracemunch  to  work  with  perl 5.26.2, which changed the
+       rules for escaping regular expressions.
+     * add some checks in tracemunch for undefined variables.
+     * modify TurnOn/TurnOff macros (in lib_vidattr.c and lib_vid_attr.c)
+       to avoid expansion of "CUR" in trace.
+
+   There are other new demo/test programs and reusable examples:
+
+   color_content
+          Demonstrate   the   color_content   and  extended_color_content
+          functions.
+
+   demo_tabs
+          A simple demo of tabs in curses.
+
+   dump_window
+          A  portable  curses screen-dump, used to compare ncurses screen
+          contents with Solaris.
+
+   pair_content
+          Demonstrate    the   pair_content   and   extended_pair_content
+          functions.
+
+   report_hashing
+          Check hash-tables used for terminfo and termcap names.
+
+   parse_rgb
+          Sample   implementation  of  the  ncurses  RGB  extension  from
+          user_caps.5, used in picsmap and savescreen programs.

 
    A  variety  of  improvements  were made to existing programs, both new
    features  as  well  as  options added to make the set of programs more
    consistent.
 
    A  variety  of  improvements  were made to existing programs, both new
    features  as  well  as  options added to make the set of programs more
    consistent.

-
-   The  ncurses program is the largest; a proportionately large number of
-   changes were made to it:
-     * modify  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.
-       add "t" toggle for notimeout function.
-     * modify layout of b/B screens to allow for additional annotation on
-       the  right  margin;  some  terminals  with partial support did not
-       display well.
-     * modify c/C screens to allow for extended color pairs.
-       add z/Z zoom feature to make extended color pairs easier to test.
-       modify  test-screens  to  take advantage of wide screens, reducing
-       the number of lines used for 88- and 256-colors.
-     * modify  "d"  edit-color  screen  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 examples to "F" screen for WACS_D_PLUS and WACS_T_PLUS.
-     * improve  "g"  screen,  correcting  ifdef which made the legend not
-       reflect  changes  to  keypad-  and  scroll-modes.  Added check for
-       return-value of putwin.
-     * make "s" test easier to understand which subtests are available
-       add a corresponding "S" wide-character overlap test-screen.
-     * add "v" screen to show baudrate and other values.
-
-   These changes were made to the other examples:
-     * modify  blue  program  to  use Unicode values for card-glyphs when
-       available, as well as improving the check for CP437 and CP850.
-     * improve   demo_menus   program,   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.
-     * correct logic in demo_terminfo program for "-f" option
-     * modify  ditto program to allow $XTERM_PROG environment variable to
-       override "xterm" as the name of the program to run in the threaded
-       configuration.
-     * add several options to the "dots" test-programs.
-     * modify filter program:
-          + 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.
-          + adapt  logic  used in [32]dialog [33]"--keep-tite" option for
-            filter  program as the "-a" option. When set, filter attempts
-            to suppress the alternate screen.
-     * modify  knight  program  to  provide the "slow" solution for small
-       screens  using  "R", noting that Warnsdorf's method is easily done
-       with "a".
-     * modify  the  savescreen program to add test patterns that exercise
-       88-, 256-, etc., colors.
-     * add  options  to  test_arrays,  for selecting termcap vs terminfo,
-       etc.
-     * modify the view program:
-          + expand  tabs  using  the  ncurses  library rather than in the
-            test-program.
-          + eliminate the "-n" option by simply reading the whole file.
-          + implement page up/down commands.
-          + remove the very old SIGWINCH example; just use KEY_RESIZE.
-     * improve  animation  in  xmas  program  by  adding  a time-delay in
-       blinkit.
-     * modify  several  test-programs  which  call  use_default_colors to
-       consistently do this only if the "-d" option is given.
-     * modify the install-rule for ncurses-examples to put the data files
-       in the data directory, e.g., /usr/share/ncurses-examples.
-     * modify  several  test  programs  to  use  new popup_msgs function,
-       adapted from the help-screen used in the edit_field program.
-     * modify   test   data   for   xterm   palettes  to  use  the  newer
-       color4/color12 values.
-     * improve the tracemunch script:
-          + show screenXX pointers and thread identifiers as names.
-          + chang   address-parameters   of  add_wch,  color_content  and
-            pair_content to dummy parameters.
+     * add  "-l"  option to test/background, to dump screen contents in a
+       form that lets different curses implementations be compared.
+     * add  "@"  command  to  test/ncurses F-test, to allow rapid jump to
+       different character pages.
+     * added enum, regex examples to test/demo_forms
+     * amend  Scaled256() macro in test/picsmap.c to cover the full range
+       0..1000
+     * corrected  pathname used in Ada95 sample programs for explain.txt,
+       to  work  with  test-packages, and used an awk script to split the
+       resulting pathname when it would be too long for a single line.
+     * ignore  interrupted  system-call  in  test/ncurses's command-line,
+       e.g., if the terminal were resized.
+     * improved  ifdef's  for  TABSIZE  variable,  to  help with AIX/HPUX
+       ports.

 
   Terminal database
 
    There are several new terminal descriptions:
 
 
   Terminal database
 
    There are several new terminal descriptions:
 

-     dumb-emacs-ansi,  dvtm,  dvtm-256color,  fbterm,  iterm2,  linux-m1
-     minitel    entries,    putty-noapp,    viewdata,   and   vt100+4bsd
-     building-block.
-
-     xterm+noalt,   xterm+titlestack,   xterm+alt1049,   xterm+alt+title
-     building  blocks  and  xterm+direct,  xterm+indirect, xterm-direct.
-     from [34]xterm patch #331.
-
-     several  other "-direct" descriptions to address the differences of
-     other terminal emulators versus xterm-direct.
+     alacritty,  domterm,  kitty,  mintty,  mintty-direct,  ms-terminal,
+     n7900,   nsterm-build309,  nsterm-direct,  screen5,  ti703,  ti707,
+     ti703-w, ti707-w vscode, vscode-direct, xterm-mono, xterm.js

 
    There  are  many  changes to existing terminal descriptions. Some were
    updates to several descriptions:
 
    There  are  many  changes to existing terminal descriptions. Some were
    updates to several descriptions:

-     * use  xterm+sm+1006  in  several  terminal  descriptions which were
-       validated  as  supporting  the  extended  mouse  feature for their
-       respective terminal emulators.
-     * corrected  sgr/sgr0 strings in a few cases reported by tic, making
-       those  correspond  to  the non-sgr settings where they differ, but
-       otherwise use ECMA-48 consistently.
-     * add  0.1sec  mandatory delay to flash capabilities using the VT100
-       reverse-video control
+     * use ansi+rep in a dozen places
+     * add rs1 to konsole, mlterm
+     * improve several flash capabilities with trailing mandatory delays
+     * drop   ich1   from   rxvt-basic,   Eterm  and  mlterm  to  improve
+       compatibility with old non-curses programs
+     * add/use xterm+keypad in xterm-new
+     * use xterm+sl-twm for consistency, nine places
+     * improve xm example in xterm+x11mouse and xterm+sm_1006.

 
    while  others  affected specific descriptions. These were retested, to
 
    while  others  affected specific descriptions. These were retested, to

-   take into account new/undocumented changes by their developers:
+   take into account changes by their developers:

 
 

-     iterm, minitel, st, viewdata, nsterm
+     terminator, st

 
 

-   while these are specific fixes based on user reports, or warnings from
-   tic:
+   while  these are specific fixes based on reviewing documentation, user
+   reports, or warnings from tic:

 
 

-   [35]ansi building blocks
+   adds200:

 
 

-          + restored  rmir/smir  in  ansi+idc  to  better  match original
-            ansiterm+idc, add alias ansiterm
+          + fix typo

 
 

-   [36]icl6402
+   gnome-256color

 
 

-          + corrected missing comma-separator between string capabilities
-            in icl6402 and m2-nam
+          + base entry on "gnome", not "vte", for consistency

 
 

-   [37]interix
+   interix

 
 

-          + updated using tack and SFU with Windows 7 Ultimate.
-          + used ^? for kdch1
+          + trim unnecessary setf/setb

 
 

-   [38]linux
+   linux-16color

 
 

-          + made linux3.0 entry the default linux entry
-          + modify  linux2.6  entry  to  improve line-drawing so that the
-            linux3.0 entry can be used in non-UTF-8 mode
-          + omitted  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 uses ISO-8859-1 in any case.
-          + modify flash capability for linux and wyse entries to put the
-            delay between the reverse/normal escapes rather than after
-          + modify  linux-16color  to  not  mask dim, standout or reverse
-            with the ncv capability
+          + accommodate  Linux  console driver incompatibility introduced
+            in early 2018

 
 

-   [39]pccon entries
+   nsterm-256color:

 
 

-          + fixed some inconsistencies in the pccon* entries
-          + add bold to pccon+sgr+acs and pccon-base
-          + add keys f12-f124 to pccon+keys
+          + add nsterm-build309 to replace nsterm-256color, assigning the
+            latter  as  an  alias  of  nsterm,  to  make  mouse work with
+            nsterm-256color

 
 

-   [40]tmux
+   regent40:

 
 

-          + corrected  sgr  string,  which  used screen's "standout" code
-            rather than the standard code.
-          + add  settings  corresponding  to xterm-keys option to reflect
-            upcoming change to make that option "on" by default
-          + uncanceled Ms
+          + renumber function-keys to match manual

 
 

-   [41]vt100
+   regent60:

 
 

-          + modify  vt100  rs2  string  to  reset vt52 mode and scrolling
-            regions
-          + corrected rs2 string for vt100-nam
-          + made  minor  fixes  for  vt100+4bsd,  e.g.,  delay in sgr for
-            consistency
+          + add cd (clr_eos)
+          + corrected acsc
+          + add shifted function-keys

 
 

-   [42]vte
+   tvi950:

 
 

-          + moved SGR 24 and 27 from vte-2014 to vte-2012
-          + add a few capabilities fixed in recent VTE development
+          + added  function-key  definitions  to agree with Televideo 950
+            manual
+          + corrected acsc
+          + remove bogus kf0
+          + add bel

 
 

-   [43]xterm
+   tvi955:

 
 

-          + add rep to xterm-new, available since [44]late 1996.
-          + modify  xterm+256color  and  xterm+256setaf  to  use  correct
-            number of color pairs.
-          + modify    rs1    for    xterm-16color,    xterm-88color   and
-            xterm-256color  to  reset palette using oc string as in linux
-            entry.
-          + add rs1 capability to xterm-256color
-          + add  oc  capability to xterm+256color, allowing palette reset
-            for xterm
-          + add op to xterm+256setaf
-          + modify xterm-r5, xterm-r6 and xterm-xf86-v32 to use xterm+kbs
-            to match [45]xterm #272, reflecting packager's changes
-          + used  ANSI  reply for u8 in xterm-new, to reflect vt220-style
-            responses that could be returned.
-          + made xterm-pcolor sgr consistent with other capabilities
+          + fix typo
+
+   vi200:
+
+          + add acsc string, including right/down-arrow
+
+   wy50:
+
+          + corrected acsc
+
+   wy50 and wy60:
+
+          + add shifted function-keys as kF1 to kF16
+
+   xterm+x11hilite:
+
+          + eliminate unused p5 parameter.

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

-     * add rmxx/smxx ECMA-48 strikeout extension to tmux and xterm-basic
-     * used RGB capability in new *-direct entries to denote direct-color
-       feature.
+     * use  xterm+sm+1006  (aka  "SGR  1006  mouse") for konsole-base and
+       putty
+     * add Smol/Rmol user-defined capability to tmux and vte-2018
+     * add Smulx user-defined capability to tmux, vte-2018

 
   Documentation
 
 
   Documentation
 


@@ -639,273 +402,279 @@ Release Notes
      * 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 [46]NEWS file but treated sketchily in manual pages.
-
-   In particular,
-     * Since   the   underlying  features  for  [47]tset,  [48]tput,  and
-       [49]clear  have  been  better  integrated,  the  documentation now
-       includes information on how those tools evolved.
-       In  addition  to explaining the improved integration of the tools,
-       the  manual  pages made it easier to see how the tools are similar
-       and how they are different.
-     * The    addch   manual   page   has   additional   information   on
-       [50]portability and differences from other implementations.
-     * The  discussion  of  color-pairs  in the attributes manual page is
-       improved in its [51]history section.
-     * The  documentation  of the chtype, cchar_t types and the attribute
-       values  which  can  be  stored  in  those types, in particular the
-       [52]history  and [53]portability sections of the attributes manual
-       page, has been improved.
-     * improve discussion of [54]portability in the mouse manual.
-     * The   pad  manual  page  has  a  section  on  the  [55]origin  and
-       portability of pads.
-     * Differences between SVr4 and X/Open Curses soft-keys are discussed
-       in a new section on [56]portability.
-     * There   are   updated/improved   notes   on   portability  in  the
-       [57]resizeterm and [58]wresize manual pages.
+       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.:
 
    In  addition  to  providing  background  information  to explain these
    features   and   show   how   they  evolved,  there  are  corrections,
    clarifications, etc.:

-     * add  note  in  the  [59]addch  manual  about  line-drawing when it
-       depends upon UTF-8.
-     * improve  discussion  of line-drawing characters in the [60]add_wch
-       manual.
-     * explain  in [61]clear's manual page that it writes to the standard
-       output.
-     * improve description of [62]endwin.
-     * improve  discussion  of  field  validation  in the [63]form driver
-       manual page.
-     * clarify the use of wint_t vs wchar_t in [64]get_wstr manual page.
-     * clarify  in  the  [65]getch manual that the keypad mode affects an
-       application's ability to read KEY_MOUSE codes, but does not affect
-       KEY_RESIZE.
-       trim  some  obsolete/incorrect  wording about EINTR from the getch
-       manual page
-       improve  manual  pages  for [66]getch and [67]get_wch to point out
-       that   they   might  return  user-defined  values  which  have  no
-       predefined names in <curses.h>
-     * improve  description  of  the  -R option in the [68]infocmp manual
-       page
-     * clarify in the [69]resizeterm manual page how KEY_RESIZE is pushed
-       onto the input stream.
-     * document return value of [70]use_extended_names
-     * document  differences  in [71]ESCDELAY versus AIX's implementation
-       in the variables manual page.
-     * The   _nc_free_tinfo   function   is   now   documented   in   the
-       [72]memory-leaks manual page, because it could be used in tack for
-       memory-leak checking.
-     * add a note to the [73]tic manual page about -W versus -f options.
-     * improve terminfo manual description of [74]terminfo syntax.
-       improve  terminfo  manual  page  discussion  of  [75]control-  and
-       graphics- characters.
-       improve [76]color-handling section in terminfo manual page
-     * clarify  description in [77]tput manual page regarding support for
-       termcap names
-       update  [78]tput  manual  page  to  reflect  changes to manipulate
-       terminal modes by sharing functions with tset.
-     * clarify  in manual pages that the optional verbose option level of
-       [79]tic   and  [80]infocmp  is  available  only  when  ncurses  is
-       configured for tracing.
-     * improve   manual   page   description   of  [81]tset/reset  versus
-       window-size.
-     * improve description of [82]tgoto parameters
-
-   There are new manual pages:
-     * [83]user_caps documents the terminfo extensions used by ncurses.
-     * [84]scr_dump documents the screen-dump format.
+     * Corrections:
+          + correct  error-returns  listed in manual pages for a few form
+            functions
+          + corrected  prototypes  in  several  manpages  using script to
+            extract those in compilable form.
+          + fix typo in term.5, improve explanation of format
+     * Clarify in manual pages that vwprintw and vwscanw are obsolete.
+       They have not been part of X/Open Curses since 2007.
+     * New/improved history and portability sections:
+          + curs_addch.3x gives some background for ACS symbols.
+          + curs_getcchar.3x  explains  a  difference between ncurses and
+            X/Open Curses.
+          + curs_getstr.3x  gives  historical/portability  background for
+            the length parameter of wgetnstr.
+          + curs_slk.3x  lists  a few differences between SVr4 curses and
+            X/Open Curses for soft-keys.
+          + curs_terminfo.3x  explains that the initial implementation of
+            terminfo  in  SVr2 was mostly replaced by other developers in
+            SVr3.
+          + infocmp.1  explains  that the initial version of terminfo had
+            no  tool  for decompiling descriptions. That came later, with
+            SVr3, with a different developer.
+          + tabs.1 tells more than you wanted to know about the tool.
+          + tic.1  explains  that  the  initial version of terminfo had a
+            rudimentary  tool  (based  on termcap) for compiling entries.
+            The tool used with Unix was developed by others for SVr3.
+          + toe.1 explains the origin of this tool.
+     * Improvements for user_caps.5:
+          + mention meml, memu and box1
+          + expanded description of XM
+          + add a clarification regarding the RGB capability.
+          + mention user_caps.5 in the tic and infocmp manual pages.
+     * Other improvements:
+          + curs_add_wch.3x  adds  note about Unicode terminology for the
+            line-drawing characters.
+          + curs_color.3x   improves  discussion  of  error  returns  and
+            extensions.
+          + curs_mouse.3x  explains how the kmous and XM capabilities are
+            used for xterm-mouse input.
+          + curs_refresh.3x  improves documentation regarding the virtual
+            and physical screens.
+          + curs_util.3x  mentions  a  difference between SVr4 and X/Open
+            Curses for unctrl.h
+          + curs_variables.3x   improves  description  of  the  init_tabs
+            capability and TABSIZE variable.
+          + ncurses.3x   improves  documentation  regarding  feature-test
+            macros in curses.h
+          + resizeterm.3x   about   top-level  windows  which  touch  the
+            screen's borders.
+          + tput.1 clarifies how tput determines the terminal size.
+
+   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
 
    Some  of  the  improvements  are  more subtle, relating to the way the

-   information is presented:
-     * Made 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  [85]SP-funcs  and
-       [86]threading.
-     * improve  manual  pages  for utilities with respect to POSIX versus
-       X/Open Curses.
-     * improve  organization  of  the [87]attributes and [88]color manual
-       pages.
+   information  is presented. For instance, the generated terminfo.5 file
+   uses  a  different  table  layout,  allowing  it  to use space on wide
+   terminals more effectively.

 
   Interesting bug-fixes
 
 
   Interesting bug-fixes
 

-     * modify  toe  to not exit if unable to read a terminal description,
-       e.g., if there is a permission problem.
-     * correct 20100515 change for weak signals versus sigprocmask
-     * work  around  Ada  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.
-     * There were, as well, several bug-fixes to handle illegal input for
-       tic.   Because   those  did  not  correspond  to  useful  terminal
-       descriptions, most users are unaffected.
+   While  there  were  many bugs fixed during development of ncurses 6.2,
+   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 in tic/infocmp's handling of user-defined
+   capabilities.  These  were  not recent bugs. Initially it was a simple
+   problem:
+     * The  user-defined capabilities can be any type (boolean, number or
+       string),  but  once given a type all uses of the name must conform
+       to  that  type--unless  some  special  support  for  a  particular
+       multi-typed name is built into ncurses.
+     * One of simpleterm's contributors copied some definitions for using
+       tmux's user-defined capabilities in late in 2016.
+
+diff --git a/st.info b/st.info
+@@ -185,7 +185,10 @@ st| simpleterm,
+  tsl=\E]0;,
+  xenl,
+  vpa=\E[%i%p1%dd,
+-
++# Tmux unofficial extensions, see TERMINFO EXTENSIONS in tmux(1)
++ Se,
++ Ss,
++ Tc,
+
+ st-256color| simpleterm with 256 colors,
+  use=st,
+
+     * Later,  in (referring to a version from mid-2017), a user asked to
+       have it updated in ncurses.
+     * However,  it  had  an  error  from  the  change  in late 2016. The
+       terminal description made what tmux expected to be string actually
+       a boolean.
+       Over  the  years,  there  were  problems with each of simpleterm's
+       terminal  descriptions.  I  repaired those, and usually dealt with
+       the problem.
+     * The  difference  in this case was that when compiling the terminal
+       database, tic may have in memory the definitions for more than one
+       terminal  description  (so  that  it  can resolve "use=" clauses).
+       Seeing   two  different  types  for  the  same  name,  in  certain
+       situations  it  would  incorrectly merge the symbol tables for the
+       two terminal descriptions.
+     * On  simpleterm's  side,  their bug was finally fixed in late 2019,
+       three years after the bug was created.
+
+   For  ncurses,  the  elapsed  time  to fix this bug was less than three
+   years.  Someone reported a problem with the terminal description a few
+   weeks  after  releasing  ncurses 6.1 (in tmux #1264), and the terminal
+   description was updated that week (ncurses patch 20180224):
+
+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
+
+   The larger part of that change added a check to prevent a simple merge
+   of  terminal  descriptions  where  the same user-defined name was used
+   with different types. But it raised some questions:
+     * Was  there  a  reliable  way to manage terminal descriptions which
+       used the same extended name in different ways?
+     * Should  ncurses  provide  a registry of well-known extended names,
+       with their types?
+
+   Since  the  correction to terminfo.src could have been readily adopted
+   by  packagers,  there  was  nothing  more  to  be  done  from ncurses'
+   standpoint  on that part. But improving ncurses to prevent issues like
+   that is the reason for making a release.
+
+   Nothing  more  (constructive) was mentioned with regard to simpleterm.
+   But  a  few  problems  were  found  in  the  handling  of user-defined
+   capabilities:
+     * Forward-references to user-defined capabilities in a "use=" clause
+       did  not  allocate  new  data  for  each  use.  In tic, successive
+       compilation   of   terminal   entries   could   add   user-defined
+       capabilities to the wrong terminal entry.
+       This  was  not noticed before, since xterm's terminal descriptions
+       were  the main users of the feature, and almost all of the uses of
+       the building-blocks which contained user-defined capabilities were
+       backward-references.
+     * There  is  one  (documented)  case  where  ncurses  6.1 supports a
+       user-defined  capability that could be any type (i.e., "RGB"). The
+       check  added  in February 2018 to guard against mismatches did not
+       handle all of the combinations needed.
+
+   Both  of  these  issues  dated  from  the  original  implementation of
+   user-defined  capabilities.  Fixing  them does not change the terminal
+   database, but a older tic without the fixes will not be able to handle
+   terminfo  sources  which rely upon those fixes. Starting in June 2019,
+   the  download  link  for  the  terminfo source file was capped at that
+   date. The development sources have an up-to-date copy of the file, for
+   people with a legitimate need for it.
+
+   The  "-c"  (check) option of tic is not very useful if it cannot offer
+   advice on parameters needed for user-defined capabilities. The various
+   Caps  files  were  reorganized to reduce redundancy, and in the common
+   portion  (Caps-ncurses),  a  registry  of user-defined capabilities is
+   provided for use by tic. While users can still define their own custom
+   capabilities,  tic  will not offer any advice when their parameters do
+   not match.
+
+   In  ncurses  6.2, tic makes a special check to allow any type for RGB,
+   but  its  being  able to do this relies upon fixes made in the ncurses
+   library in mid-2019.

 
   Configuration changes
 
     Major changes
 
 
   Configuration changes
 
     Major changes
 

-   This  release  provides  a new binary format for terminal descriptions
-   that  use  extended  numeric capabilities. Applications built with the
-   wide-character ncursesw library can use these extended numbers.
-     * This includes utilities such as tic and infocmp, because (as noted
-       in  [89]New features), the feature relies upon an extension to the
-       low-level tinfo library.
-     * A  few  software  packagers  use a configuration option of ncurses
-       which  allows the low-level tinfo library to be shared between the
-       high-level  ncurses  and  ncursesw libraries. This new feature was
-       designed to work in that configuration as well.
-
-   Other  applications (i.e., using the 8-bit ncurses library) which read
-   the  extended terminal descriptions see those numeric capabilities set
-   to the maximum value for a signed 16-bit number.
-
-   Older   versions   of   ncurses'   tic   accept  out-of-range  numeric
-   capabilities,  storing  those as the maximum value for a signed 16-bit
-   number.  Other  implementations of curses (mentioned in the discussion
-   of [90]picsmap) give zero for these out-of-range capabilities.
+   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
 

-   These  changes  provide  support  for  tack 1.08, released in [91]July
-   2017:
-     * add   --without-tack   configure  option  to  refine  --with-progs
-       configure option. Normally tack is built outside the ncurses 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  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.
-
-   Other changes to the configure-script and generated files include
-     * add  configure  options to disable checks for form, menu and panel
-       libraries  so  that  ncurses-examples  can  be built with non-SVr4
-       curses implementations.
-     * add  configure  option  --enable-opaque-curses for ncurses library
-       and similar options for the other libraries.
-     * add configure 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
-     * modify  configure macro for shared-library rules to use -Wl,-rpath
-       rather than -rpath to work around a bug in scons
-     * improve  ncurses-examples'  configure  script  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  is  normally  (since [92]20111030) ifdef'd depending on this
-       test.
-     * 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
-     * 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.
-     * improve configure check for setting the WILDCARD_SYMS variable; on
-       ppc64 the variable is in the Data section rather than Text.
-     * correct  result  of  configure  option  --without-fallbacks, which
-       caused FALLBACK_LIST to be set to "no"
-     * modify  --with-pkg-config-libdir  option  to  make  it possible to
-       install  ".pc"  files  even if pkg-config is not found. Limit this
-       change,  to suppress the actual install if it is not overridden to
-       a valid directory at install time.
-     * disallow "no" as a possible value for --with-shlib-version option,
-       overlooked in cleanup-changes for [93]20000708.
+   There are a few new/modified configure options:
+
+   --with-config-suffix
+          helps  work  around  a  filename  conflict with Debian packages
+          versus test-packages.
+
+   --with-ada-libname
+          allows  one  to  rename  the  "AdaCurses" library (at least one
+          packager prefers a lowercase name).
+
+   --with-fallbacks
+          now ensures there is a value, and adds the fallback information
+          to top-level Makefile summary.
+
+   --with-pcre2
+          check for pcre-posix library to help with MinGW port.
+
+   --with-tic-path and
+
+   --with-infocmp-path
+          help  work  around  problems  building  fallback  source  using
+          pre-6.0 tic/infocmp.
+
+   --with-versioned-syms
+          option value can now be a relative pathname.

 
   Portability
 
    Many  of  the  portability  changes  are implemented via the configure
    script:
 
   Portability
 
    Many  of  the  portability  changes  are implemented via the configure
    script:

-     * improve  configure  script's  CF_CC_ENV_FLAGS  macro  to allow for
-       compiler  wrappers  such  as  ccache.  This  change moves 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.
-     * 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.
-     * add  configuration  checks  to build with [94]NetBSD curses, which
-       for example lacks [95]use_env.
-     * 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.
-     * modify  several  test  programs  to  reflect  that  ncurses honors
-       existing  signal  handlers in initscr, while other implementations
-       do not.
-     * add  configure  check  for  openpty to ncurses-examples' configure
-       script, for ditto.
-     * improve check for working poll function by using posix_openpt as a
-       fallback in case there is no valid terminal on the standard input
-     * modify  ncurses-examples'  configure  script  to check for pthread
-       dependency  of  ncursest  or  ncursestw  library when building the
-       ncurses examples, e.g., in case weak symbols are used.
-     * add   checks   in  ncurses-examples'  configure  script  for  some
-       functions neither in 4.3BSD curses, nor based on X/Open Curses:
-          + modify  a  loop limit in firework.c to work around absense 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.
-     * build-fixes for the Portland Group (PGI) compilers
-          + 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.
-     * modify  configure  script  for  clang  as used on FreeBSD, to work
-       around clang's differences in exit codes vs gcc.
-     * fixes for configure/build using clang on OSX
-          + 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 addition
-            of "-lstdc++" option 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.
-     * fixes for OS/2:
-          + use  button  instead  of  kbuf[0]  in  EMX-specific  part  of
-            lib_mouse.c
-          + support building with libtool on OS/2
-          + use stdc++ library with OS/2 kLIBC
-          + clear  configure  script's  cf_XOPEN_SOURCE for OS/2, to work
-            with its header files
-     * add  "newer"  baudrate symbols to the [96]baudrate function in the
-       ncurses library as well as to a corresponding table in tset.
-     * modify ncurses-examples savescreen to work with AIX and HPUX.
-     * define WIN32_LEAN_AND_MEAN for MinGW port, making builds faster.
-     * add  a configure check for wcwidth versus the ncurses line-drawing
-       characters,  to  use  in  special-casing  systems such as Solaris.
-       Solaris,  however,  requires  a  special  case  that  maps Unicode
-       line-drawing  characters  into  the  acsc  string  for non-Unicode
-       locales.  Solaris also has a misconfigured wcwidth which marks all
-       of the line drawing characters as double-width.
-     * string-hacks (non-standard):
-          + fix  configure  script  to  record  when  strlcat is found on
-            OpenBSD.
-          + add   --enable-string-hacks   option   to   ncurses-examples'
-            configure script.
-          + completed  string-hacks  for  sprintf,  etc.,  including  the
-            ncurses-examples programs.
-          + make   --enable-string-hacks   option  work  with  Debian  by
-            checking   for   the   "bsd"   library   and  its  associated
-            "<bsd/string.h>" header.
-     * workaround for Debian's antique/unmaintained version of mawk:
-          + see  Debian  #65617,  which  was  fixed  in  mawk's  upstream
-            releases in [97]2009.
-          + related fixes when building link_test.
+     * ignore $TERMINFO as a default value in configure script if it came
+       from the infocmp -Q option.
+     * distinguish  gcc  from  icc  and  clang when the --enable-warnings
+       option   is   not   used,  to  avoid  unnecessary  warnings  about
+       unrecognized inline options
+     * consistently  prepend  new  libraries  as  they  are  found during
+       configuration,  rather  than  relying  upon  the linker to resolve
+       order dependencies of libraries.
+     * modified  configure  scripts  to  reduce  relinking/ranlib  during
+       library install :
+          + use  "install -p" when available, to avoid need for ranlib of
+            static libraries.
+          + scripts which use "--disable-relink;" 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.
+     * add configure check for getenv to work around implementation shown
+       in  Emscripten  which overwrites the previous return value on each
+       call.
+       Use  that  to optionally suppress START_TRACE macro, whose call to
+       getenv may not work properly
+     * change  target configure level for _XOPEN_SOURCE to 600 to address
+       use of vsscanf and setenv.
+     * reduce  use of _GNU_SOURCE for current glibc where _DEFAULT_SOURCE
+       combines with _XOPEN_SOURCE
+       Allow  for  Cygwin's  newlib when checking for the _DEFAULT_SOURCE
+       symbol.
+       MidnightBSD   is   now   checked   for  the  _XOPEN_SOURCE-related
+       definitions.
+     * If the check for va_copy or __va_copy fails,
+          + configure  now  tries copying the pointers for va_list, or as
+            an array.
+          + alternatively, it checks for __builtin_va_copy(), which could
+            be used with AIX xlc in c89 mode.
+     * several changes to support a port to Ultrix 3.1:
+          + 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
+     * The test/configure script (used for ncurses-examples) is improved:
+          + work around non-ncurses termcap.h file, e.g., in Slackware.
+          + check for TABSIZE variable.
+          + checks  for  the  X11/Intrinsic.h  header, accommodate recent
+            MacOS changes which largely emptied /usr/include.
+
+   Here are some of the other portability fixes:
+     * added  dummy  "check"  rule  in  top-level  and  test-Makefile  to
+       simplify building test-packages for ArchLinux.
+     * dropped   library-dependency   on  psapi  for  MinGW  port,  since
+       win_driver.c   defines   PSAPI_VERSION   to   2,   making  it  use
+       GetProcessImageFileName from kernel32.dll
+     * made  build-fixes  for  configuration  using --program-suffix with
+       Ada95,  noticed  with  MacOS  but  applicable  to  other platforms
+       without libpanelw, etc.
+     * modified  ncurses/Makefile.in  to  fix a case where Debian/testing
+       changes to the ld --as-needed configuration broke ncurses-examples
+       test packages.
+     * used   _WIN32/_WIN64   in  preference  to  __MINGW32__/__MINGW64__
+       symbols  to simplify building with Microsoft Visual C++, since the
+       former are defined in both compiler configurations.

      _________________________________________________________________
 
 Features of ncurses
      _________________________________________________________________
 
 Features of ncurses


@@ -982,10 +751,10 @@ 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  [98]tic/[99]captoinfo  utility  provided with ncurses has the
-       ability  to  translate  many termcaps from the XENIX, IBM and AT&T
-       extension sets.
-     * A BSD-like [100]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


@@ -1000,20 +769,20 @@ 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 [101]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
        have  a  corresponding  function  which may be linked (and will be
        prototype-checked)  if  the  macro  definition  is  disabled  with
        #undef.
      * The library meets the XSI requirement that every macro entry point
        have  a  corresponding  function  which may be linked (and will be
        prototype-checked)  if  the  macro  definition  is  disabled  with
        #undef.

-     * Extensive  documentation  is  provided  (see  the  [102]Additional
-       Reading section of the [103]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

-   [104]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:


@@ -1021,127 +790,131 @@ Applications using ncurses
    aptitude
           FrontEnd to Apt, the debian package manager
 
    aptitude
           FrontEnd to Apt, the debian package manager
 

-          [105]https://wiki.debian.org/Aptitude
+          https://wiki.debian.org/Aptitude

 
    cdk
           Curses Development Kit
 
 
    cdk
           Curses Development Kit
 

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

 
    ded
           directory-editor
 
 
    ded
           directory-editor
 

-          [107]https://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.
 

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

 
    lynx
           the text WWW browser
 
 
    lynx
           the text WWW browser
 

-          [109]https://lynx.invisible-island.net/
+          https://lynx.invisible-island.net/

 
    mutt
           mail utility
 
 
    mutt
           mail utility
 

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

 
    ncftp
           file-transfer utility
 
 
    ncftp
           file-transfer utility
 

-          [111]https://www.ncftp.com/
+          https://www.ncftp.com/

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

-          [112]https://sites.google.com/a/bostic.com/keithbostic/vi
+          https://sites.google.com/a/bostic.com/keithbostic/vi

 
    ranger
           A console file manager with VI key bindings in Python.
 
 
    ranger
           A console file manager with VI key bindings in Python.
 

-          [113]https://ranger.github.io/
+          https://ranger.github.io/

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

-          [114]http://www.tin.org/
+          http://www.tin.org/

 
    vifm
           File manager with vi like keybindings
 
 
    vifm
           File manager with vi like keybindings
 

-          [115]https://vifm.info/
+          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
 

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

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

-          [117]https://mosh.mit.edu/
+          https://mosh.mit.edu/

 
    tack
           terminfo action checker
 
 
    tack
           terminfo action checker
 

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

 
    tmux
           terminal multiplexor
 
 
    tmux
           terminal multiplexor
 

-          [119]https://github.com/tmux/tmux/wiki
+          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.
 

-          [120]https://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
 

-          [121]https://www.gnu.org/software/emacs/
+          https://www.gnu.org/software/emacs/

 
    less
           The  most  commonly  used  pager  (a program that displays text
           files).
 
 
    less
           The  most  commonly  used  pager  (a program that displays text
           files).
 

-          [122]http://www.greenwoodsoftware.com/less/
+          http://www.greenwoodsoftware.com/less/

 
    screen
           terminal multiplexor
 
 
    screen
           terminal multiplexor
 

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

 
    vim
           text editor
 
 
    vim
           text editor
 

-          [124]https://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 [125]Thomas Dickey. Thomas Dickey also
-   acts  as  the maintainer for the Free Software Foundation, which holds
-   the [126]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
+   holds  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
 

-     [127]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
 

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

 
    containing the line:
 
 
    containing the line:
 


@@ -1150,219 +923,60 @@ 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

 
 

-     [129]ftp://ftp.invisible-island.net/ncurses/ and
-     [130]https://invisible-mirror.net/archives/ncurses/ .
+     ftp://ftp.invisible-island.net/ncurses/6.1/ and
+     https://invisible-mirror.net/archives/ncurses/6.1/ .

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

-     [131]http://lists.gnu.org/archive/html/bug-ncurses            (also
-     [132]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:

-     * [133]ncurses licensing
-     * [134]Symbol versioning in ncurses
-     * [135]Comments on ncurses versus slang (S-Lang)
-     * [136]tack - terminfo action checker
-     * [137]tctest - termcap library checker
-     * [138]Terminal Database
+     * ncurses licensing
+     * Symbol versioning in ncurses
+     * Comments on ncurses versus slang (S-Lang)
+     * 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  [139]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.
+   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 [140]Richard Shuford's archive .
-
-     * [141]Overview
-     * [142]Release Notes
-          + [143]Library improvements
-               o [144]New features
-               o [145]Other improvements
-          + [146]Program improvements
-               o [147]Utilities
-               o [148]Examples
-          + [149]Terminal database
-          + [150]Documentation
-          + [151]Interesting bug-fixes
-          + [152]Configuration changes
-               o [153]Major changes
-               o [154]Configuration options
-          + [155]Portability
-     * [156]Features of ncurses
-     * [157]Applications using ncurses
-     * [158]Development activities
-     * [159]Related resources
-     * [160]Other resources
-
-References
-
-   1. https://invisible-island.net/ncurses/man/captoinfo.1m.html
-   2. https://invisible-island.net/ncurses/man/clear.1.html
-   3. https://invisible-island.net/ncurses/man/infocmp.1m.html
-   4. https://invisible-island.net/ncurses/man/tabs.1.html
-   5. https://invisible-island.net/ncurses/man/tic.1m.html
-   6. https://invisible-island.net/ncurses/man/toe.1m.html
-   7. https://invisible-island.net/ncurses/man/tput.1.html
-   8. https://invisible-island.net/ncurses/man/tset.1.html
-   9. https://invisible-island.net/ncurses/
-  10. ftp://ftp.invisible-island.net/ncurses/
-  11. https://invisible-mirror.net/archives/ncurses/
-  12. ftp://ftp.gnu.org/gnu/ncurses/
-  13. https://invisible-island.net/ncurses/man/curs_kernel.3x.html#h3-def_prog_mode_-def_shell_mode
-  14. https://invisible-island.net/ncurses/ncurses-mapsyms.html
-  15. https://invisible-island.net/ncurses/tctest.html#bsd42-numeric-caps
-  16. https://invisible-island.net/ncurses/ncurses-slang.html#cause_numbers
-  17. https://invisible-island.net/ncurses/tack.html#portable
-  18. https://invisible-island.net/ncurses/tack/CHANGES.html#index-t20170726
-  19. https://invisible-island.net/ncurses/man/curs_attr.3x.html#h2-EXTENSIONS
-  20. https://invisible-island.net/ncurses/man/tset.1.html#h3-reset---reinitialization
-  21. https://invisible-island.net/ncurses/man/tset.1.html
-  22. https://invisible-island.net/ncurses/man/tput.1.html
-  23. https://invisible-island.net/ncurses/man/tset.1.html#h3-reset---reinitialization
-  24. https://invisible-island.net/ncurses/man/clear.1.html
-  25. https://invisible-island.net/ncurses/tctest.html#bsd42-ctl-question
-  26. https://invisible-island.net/ncurses/tctest.html#freebsd-ctl-question
-  27. https://invisible-island.net/ncurses/ncurses-examples.html
-  28. https://invisible-island.net/ncurses/man/new_pair.3x.html#h3-alloc_pair
-  29. https://invisible-island.net/ncurses/man/new_pair.3x.html#h3-find_pair
-  30. https://invisible-island.net/ncurses/man/new_pair.3x.html#h3-free_pair
-  31. https://invisible-island.net/ncurses/ncurses-slang.html#compare_picsmap
-  32. https://invisible-island.net/dialog/
-  33. https://invisible-island.net/dialog/manpage/dialog.html#h3-Common-Options
-  34. https://invisible-island.net/xterm/xterm.log.html#xterm_331
-  35. https://invisible-island.net/ncurses/terminfo.src.html#toc-_A_N_S_I__S_Y_S__I_S_O_6429__E_C_M_A-48__Capabilities
-  36. https://invisible-island.net/ncurses/terminfo.src.html#tic-icl6404
-  37. https://invisible-island.net/ncurses/terminfo.src.html#tic-interix
-  38. https://invisible-island.net/ncurses/terminfo.src.html#toc-_Linux_consoles
-  39. https://invisible-island.net/ncurses/terminfo.src.html#toc-_Open_B_S_D_consoles
-  40. https://invisible-island.net/ncurses/terminfo.src.html#toc-_Tmux
-  41. https://invisible-island.net/ncurses/terminfo.src.html#toc-_D_E_C__V_T100_and_compatibles
-  42. https://invisible-island.net/ncurses/terminfo.src.html#toc-_G_N_O_M_E__V_T_E_
-  43. https://invisible-island.net/ncurses/terminfo.src.html#toc-_X_T_E_R_M
-  44. https://invisible-island.net/xterm/xterm.log.html#xterm_32
-  45. https://invisible-island.net/xterm/xterm.log.html#xterm_272
-  46. https://invisible-island.net/ncurses/NEWS.html
-  47. https://invisible-island.net/ncurses/man/clear.1.html#h2-HISTORY
-  48. https://invisible-island.net/ncurses/man/clear.1.html#h2-HISTORY
-  49. https://invisible-island.net/ncurses/man/clear.1.html#h2-HISTORY
-  50. https://invisible-island.net/ncurses/man/curs_addch.3x.html#h2-PORTABILITY
-  51. https://invisible-island.net/ncurses/man/curs_attr.3x.html#h2-HISTORY
-  52. https://invisible-island.net/ncurses/man/curs_attr.3x.html#h2-HISTORY
-  53. https://invisible-island.net/ncurses/man/curs_attr.3x.html#h2-PORTABILITY
-  54. https://invisible-island.net/ncurses/man/curs_mouse.3x.html#h2-PORTABILITY
-  55. https://invisible-island.net/ncurses/man/curs_pad.3x.html#h2-PORTABILITY
-  56. https://invisible-island.net/ncurses/man/curs_slk.3x.html#h2-PORTABILITY
-  57. https://invisible-island.net/ncurses/man/resizeterm.3x.html#h2-PORTABILITY
-  58. https://invisible-island.net/ncurses/man/wresize.3x.html#h2-PORTABILITY
-  59. https://invisible-island.net/ncurses/man/curs_addch.3x.html#h3-ACS-Symbols
-  60. https://invisible-island.net/ncurses/man/curs_add_wch.3x.html
-  61. https://invisible-island.net/ncurses/man/clear.1.html#h2-DESCRIPTION
-  62. https://invisible-island.net/ncurses/man/curs_initscr.3x.html#h3-endwin
-  63. https://invisible-island.net/ncurses/man/form_driver.3x.html
-  64. https://invisible-island.net/ncurses/man/curs_get_wstr.3x.html#h2-RETURN-VALUE
-  65. https://invisible-island.net/ncurses/man/curs_getch.3x.html#h3-Predefined-key-codes
-  66. https://invisible-island.net/ncurses/man/curs_getch.3x.html#h3-Keypad-Mode
-  67. https://invisible-island.net/ncurses/man/curs_get_wch.3x.html#h2-DESCRIPTION
-  68. https://invisible-island.net/ncurses/man/infocmp.1m.html
-  69. https://invisible-island.net/ncurses/man/resizeterm.3x.html#h2-NOTES
-  70. https://invisible-island.net/ncurses/man/curs_extend.3x#h2-RETURN-VALUE
-  71. https://invisible-island.net/ncurses/man/curs_variables.3x.html#h2-PORTABILITY
-  72. https://invisible-island.net/ncurses/man/curs_memleaks.3x.html
-  73. https://invisible-island.net/ncurses/man/tic.1m.html
-  74. https://invisible-island.net/ncurses/man/terminfo.5.html#h3-Terminfo-Capabilities-Syntax
-  75. https://invisible-island.net/ncurses/man/terminfo.5.html#h3-Line-Graphics
-  76. https://invisible-island.net/ncurses/man/terminfo.5.html#h3-Color-Handling
-  77. https://invisible-island.net/ncurses/man/tput.1.html#h2-PORTABILITY
-  78. https://invisible-island.net/ncurses/man/tput.1.html#h3-Aliases
-  79. https://invisible-island.net/ncurses/man/tic.1m.html#h2-OPTIONS
-  80. https://invisible-island.net/ncurses/man/infocmp.1m.html#h3-Other-Options
-  81. https://invisible-island.net/ncurses/man/tset.1.html
-  82. https://invisible-island.net/ncurses/man/curs_termcap.3x.html#h3-FORMATTING-CAPABILITIES
-  83. https://invisible-island.net/ncurses/man/user_caps.5.html
-  84. https://invisible-island.net/ncurses/man/scr_dump.5.html
-  85. https://invisible-island.net/ncurses/man/curs_sp_funcs.3x.html
-  86. https://invisible-island.net/ncurses/man/curs_threads.3x.html
-  87. https://invisible-island.net/ncurses/man/curs_attr.3x.html
-  88. file:///ncurses/man/curs_color.3x.html
-  89. file:///usr/build/ncurses/ncurses-6.1-20180127/doc/html/announce.html#h4-new-library
-  90. https://invisible-island.net/ncurses/ncurses-slang.html#compare_picsmap
-  91. https://invisible-island.net/ncurses/tack/CHANGES.html#index-t20170726
-  92. https://invisible-island.net/ncurses/NEWS.html#t20111030
-  93. https://invisible-island.net/ncurses/NEWS.html#t20000708
-  94. https://invisible-island.net/ncurses/ncurses-netbsd.html
-  95. https://invisible-island.net/ncurses/man/curs_util.3x.html#h3-use_env
-  96. https://invisible-island.net/ncurses/man/curs_termattrs.3x.html#h3-baudrate
-  97. https://invisible-island.net/mawk/CHANGES.html#t20090727
-  98. https://invisible-island.net/ncurses/man/tic.1m.html
-  99. https://invisible-island.net/ncurses/man/captoinfo.1m.html
- 100. https://invisible-island.net/ncurses/man/tset.1.html
- 101. https://invisible-island.net/ncurses/man/toe.1m.html
- 102. https://invisible-island.net/ncurses/ncurses.faq.html#additional_reading
- 103. https://invisible-island.net/ncurses/ncurses.faq.html
- 104. https://invisible-island.net/ncurses/ncurses-examples.html
- 105. https://wiki.debian.org/Aptitude
- 106. https://invisible-island.net/cdk/
- 107. https://invisible-island.net/ded/
- 108. https://invisible-island.net/dialog/
- 109. https://lynx.invisible-island.net/
- 110. http://www.mutt.org/
- 111. https://www.ncftp.com/
- 112. https://sites.google.com/a/bostic.com/keithbostic/vi
- 113. https://ranger.github.io/
- 114. http://www.tin.org/
- 115. https://vifm.info/
- 116. https://alioth.debian.org/projects/minicom/
- 117. https://mosh.mit.edu/
- 118. https://invisible-island.net/ncurses/tack.html
- 119. https://github.com/tmux/tmux/wiki
- 120. https://invisible-island.net/vile/
- 121. https://www.gnu.org/software/emacs/
- 122. http://www.greenwoodsoftware.com/less/
- 123. https://www.gnu.org/software/screen/
- 124. https://www.vim.org/
- 125. mailto:dickey@invisible-island.net
- 126. https://invisible-island.net/ncurses/ncurses-license.html
- 127. mailto:bug-ncurses@gnu.org
- 128. mailto:bug-ncurses-request@gnu.org
- 129. ftp://ftp.invisible-island.net/ncurses/
- 130. https://invisible-mirror.net/archives/ncurses/
- 131. http://lists.gnu.org/archive/html/bug-ncurses
- 132. https://lists.gnu.org/archive/html/bug-ncurses
- 133. https://invisible-island.net/ncurses/ncurses-license.html
- 134. https://invisible-island.net/ncurses/ncurses-mapsyms.html
- 135. https://invisible-island.net/ncurses/ncurses-slang.html
- 136. https://invisible-island.net/ncurses/tack.html
- 137. https://invisible-island.net/ncurses/tctest.html
- 138. https://invisible-island.net/ncurses/ncurses.html#download_database
- 139. http://www.catb.org/~esr/terminfo/
- 140. http://web.archive.org/web/*/http://www.cs.utk.edu/~shuford/terminal
- 141. file:///usr/build/ncurses/ncurses-6.1-20180127/doc/html/announce.html#h2-overview
- 142. file:///usr/build/ncurses/ncurses-6.1-20180127/doc/html/announce.html#h2-release-notes
- 143. file:///usr/build/ncurses/ncurses-6.1-20180127/doc/html/announce.html#h3-library
- 144. file:///usr/build/ncurses/ncurses-6.1-20180127/doc/html/announce.html#h4-new-library
- 145. file:///usr/build/ncurses/ncurses-6.1-20180127/doc/html/announce.html#h4-fixes-library
- 146. file:///usr/build/ncurses/ncurses-6.1-20180127/doc/html/announce.html#h3-programs
- 147. file:///usr/build/ncurses/ncurses-6.1-20180127/doc/html/announce.html#h4-utilities
- 148. file:///usr/build/ncurses/ncurses-6.1-20180127/doc/html/announce.html#h4-examples
- 149. file:///usr/build/ncurses/ncurses-6.1-20180127/doc/html/announce.html#h3-database
- 150. file:///usr/build/ncurses/ncurses-6.1-20180127/doc/html/announce.html#h3-documentation
- 151. file:///usr/build/ncurses/ncurses-6.1-20180127/doc/html/announce.html#h3-bug-fixes
- 152. file:///usr/build/ncurses/ncurses-6.1-20180127/doc/html/announce.html#h3-config-config
- 153. file:///usr/build/ncurses/ncurses-6.1-20180127/doc/html/announce.html#h4-config-major
- 154. file:///usr/build/ncurses/ncurses-6.1-20180127/doc/html/announce.html#h4-config-options
- 155. file:///usr/build/ncurses/ncurses-6.1-20180127/doc/html/announce.html#h3-portability
- 156. file:///usr/build/ncurses/ncurses-6.1-20180127/doc/html/announce.html#h2-features
- 157. file:///usr/build/ncurses/ncurses-6.1-20180127/doc/html/announce.html#h2-who-uses
- 158. file:///usr/build/ncurses/ncurses-6.1-20180127/doc/html/announce.html#h2-development
- 159. file:///usr/build/ncurses/ncurses-6.1-20180127/doc/html/announce.html#h2-this-stuff
- 160. file:///usr/build/ncurses/ncurses-6.1-20180127/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