X-Git-Url: http://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=announce.html.in;h=caaa2899b0e3f527478d3dd22ca072aa6c8c39d6;hp=ebeee52430fef983cc92630e4106409d17f3a21a;hb=HEAD;hpb=c11444e368f1d5964bd0f81e6e3b0f8c8ccd09cc

diff --git a/announce.html.in b/announce.html.in
index ebeee524..9889ef1b 100644
--- a/announce.html.in
+++ b/announce.html.in
@@ -1,7 +1,7 @@
 <!--
-  $Id: announce.html.in,v 1.104 2022/12/31 20:35:34 tom Exp $
+  $Id: announce.html.in,v 1.107 2024/04/27 16:45:27 tom Exp $
   ****************************************************************************
-  * Copyright 2018-2021,2022 Thomas E. Dickey                                *
+  * Copyright 2018-2023,2024 Thomas E. Dickey                                *
   *                                                                          *
   * Permission is hereby granted, free of charge, to any person obtaining a  *
   * copy of this software and associated documentation files (the            *
@@ -154,10 +154,10 @@
   Notes</a></h2>
 
   <p>These notes are for <span class="main-name">ncurses</span>
-  @VERSION@, released <strong>December 31, 2022</strong>.</p>
+  @VERSION@, released <strong>April 27, 2024</strong>.</p>
 
   <p>This release is designed to be source-compatible with
-  <span class="main-name">ncurses</span> 5.0 through 6.3; providing
+  <span class="main-name">ncurses</span> 5.0 through 6.4; providing
   extensions to the application binary interface (ABI). Although
   the source can still be configured to support the <span class=
   "main-name">ncurses</span> 5 ABI, the reason for the release is
@@ -172,13 +172,68 @@
   bug-fixes/improvements</a> dealt with robustness issues. The
   release notes also mention some other bug-fixes, but are focused
   on new features and improvements to existing features since
-  <span class="main-name">ncurses</span> 6.3 release.</p>
+  <span class="main-name">ncurses</span> 6.4 release.</p>
 
   <h3><a name="h3-library" id="h3-library">Library improvements</a></h3>
 
   <h4><a name="h4-new-library" id="h4-new-library">New features</a></h4>
 
-  <p>There are no new features in this release.</p>
+  <p>These are new features:</p>
+
+  <ul>
+    <li>
+      <p>The low-level terminfo and termcap interfaces are used
+      both by the higher-level curses library, as well as by many
+      applications.</p>
+
+      <p>The functions which convert parameterized terminal
+      capability strings for output to the terminal
+      (<code>tiparm</code> and <code>tparm</code>) analyze the
+      capability string to determine which parameters are strings
+      (i.e., addresses), versus numbers (not addresses).</p>
+
+      <p>The library's analysis of a capability string may differ
+      from the calling application's design if environment
+      variables are used to point to an invalid terminal database.
+      This is a longstanding problem with <em>all</em>
+      implementations of terminfo, dating from the early 1980s.</p>
+
+      <p>Two new functions address this problem: by providing a
+      function which allows the calling application to tell ncurses
+      how many string-parameters to expect:</p>
+
+      <ul>
+        <li><code>tiscan_s</code> helps applications check
+        formatting capabilities that would be passed to
+        <code>tiparm_s</code>.</li>
+
+        <li><code>tiparm_s</code> provides applications a way to
+        tell ncurses what the expected parameters are for a
+        capability.</li>
+      </ul>
+    </li>
+
+    <li>
+      <p>The ncurses library supports a compile-time feature
+      (enabled with the configure <code>--enable-check-size</code>
+      option) which simplifies initialization with terminals which
+      do not negotiate window (screen) size. This is done in
+      <code>setupterm</code>, by providing for using ANSI
+      cursor-position report (in user6/user7 terminfo capabilities)
+      to obtain the screen size if neither environment variables or
+      ioctl is used.</p>
+
+      <p>The ncurses test-program with options
+      &ldquo;<code>-E&nbsp;-T</code>&rdquo; demonstrates this
+      feature.</p>
+    </li>
+
+    <li>add functions to query tty-flags in
+    <code>SCREEN</code></li>
+  </ul>
+
+  <p>This release drops compatibility with obsolete versions of
+  <a href="@HOMEPAGE@/tack/">tack</a>, e.g., pre-1.08</p>
 
   <h4><a name="h4-fixes-library" id="h4-fixes-library">Other
   improvements</a></h4>
@@ -187,55 +242,108 @@
 
   <ul>
     <li>
-      <p>modify <tt>delscreen</tt> to more effectively delete all
-      windows on the given screen.</p>
+      <p>In addition to the new, safer function
+      <code>tiparm_s</code>, ncurses adds checks to make the older
+      <code>tiparm</code>, <code>tparm</code> and
+      <code>tgoto</code> functions safer:</p>
+
+      <ul>
+        <li>
+          <p>the terminfo functions <code>tiparm</code> and
+          <code>tparm</code> ensure that the capability string
+          comes from the terminal description which ncurses loads,
+          rather than from random data which the application
+          happens to have.</p>
+        </li>
+
+        <li>
+          <p>the <code>tgoto</code> function disallows capabilities
+          which its analysis shows will attempt to use string
+          parameters.</p>
+        </li>
+
+        <li>
+          <p>ncurses uses internal functions which correspond to
+          <code>tiparm</code>, and <code>tgoto</code> which ensure
+          that the capability strings which are passed to these
+          functions come from the loaded terminal description.</p>
+        </li>
+      </ul>
+    </li>
+
+    <li>
+      <p>improve check in <code>lib_tparm.c</code>, ensuring that a
+      char* fits into a <code>TPARM_ARG</code></p>
+    </li>
+
+    <li>
+      <p>modify <code>_nc_syserr_abort</code> to use
+      <code>_nc_env_access</code>, rather than only checking root
+      uid</p>
+    </li>
+
+    <li>
+      <p>improve thread lock in <code>lib_trace.c</code></p>
+    </li>
+
+    <li>
+      <p>modify <code>flushinp</code> to use file descriptors in
+      <code>SCREEN</code>, rather than from <code>TERMINAL</code>,
+      and check if they are for a terminal, like SVr4</p>
+    </li>
+
+    <li>
+      <p>modify <code>mcprint</code> to use file descriptor in
+      <code>SCREEN</code>, for consistency</p>
+    </li>
+
+    <li>
+      <p>modify internal function <code>_nc_read_file_entry</code>
+      to show relevant filename in warnings</p>
     </li>
 
     <li>
-      <p>modify <tt>wnoutrefresh</tt> to call <tt>pnoutrefresh</tt>
-      if its parameter is a pad, rather than treating it as an
-      error, and modify new_panel to permit its window-parameter to
-      be a pad</p>
+      <p>improve checks in internal function
+      <code>convert_string</code> for corrupt terminfo entry</p>
     </li>
 
     <li>
-      <p>modify curses_trace() to show the trace-mask as symbols,
-      e.g., <tt>TRACE_ORDINARY</tt>, <tt>DEBUG_LEVEL(3)</tt>.</p>
+      <p>review/improve handling of out-of-memory conditions</p>
     </li>
 
     <li>
-      <p>improve checks for valid mouse events when an intermediate
-      mouse state is not part of the mousemask specified by the
-      caller</p>
+      <p>limit delays to 30 seconds, i.e., padding delays in
+      terminfo, as well as <code>napms</code> and
+      <code>delay_output</code> functions</p>
     </li>
 
     <li>
-      <p>allow extended-color number in <em>opts</em> parameter of
-      <tt>wattr_on</tt>.</p>
+      <p>fix reallocation loop for <code>vsnprintf</code> in
+      <code>_nc_sprintf_string</code> by copying the va_list
+      variable</p>
     </li>
 
     <li>
-      <p>improve <tt>_tracecchar_t2</tt> formatting of
-      base+combining character.</p>
+      <p>modify <code>delscreen</code> to limit the windows which
+      it creates to just those associated with the screen</p>
     </li>
 
     <li>
-      <p>trim out some unwanted linker options from ncurses*config
-      and .pc files seen in Fedora 36+.</p>
+      <p>modify <code>endwin</code> to return an error if it is
+      called again without an intervening screen update</p>
     </li>
 
     <li>
-      <p>improve shell-scripts with <em>shellcheck</em></p>
+      <p>modify <code>wenclose</code> to handle pads</p>
     </li>
 
     <li>
-      <p>improve use of "trap" in shell scripts, using a
-      script.</p>
+      <p>eliminate use of <code>PATH_MAX</code> in
+      <code>lib_trace.c</code></p>
     </li>
 
     <li>
-      <p>modify <tt>make-tar.sh</tt> scripts to make timestamps
-      more predictable.</p>
+      <p>provide for any <code>CCHARW_MAX</code> greater than 1</p>
     </li>
   </ul>
 
@@ -243,19 +351,32 @@
 
   <ul>
     <li>
-      <p>modify <tt>misc/gen-pkgconfig.in</tt> to allow for the
-      case where the library directory does not yet exist, since
-      this is processed before doing an install</p>
+      <p>correct loop termination condition in
+      <code>waddnstr</code> and <code>waddnwstr</code></p>
+    </li>
+
+    <li>
+      <p>improve parsing in internal function
+      <code>_nc_msec_cost</code>, allowing a single decimal
+      point</p>
     </li>
 
     <li>
-      <p>set trailing null on string passed from <tt>winsnstr</tt>
-      to <tt>wins_nwstr</tt>.</p>
+      <p>amend parameter check for entire string versus specific
+      length in <code>winsnstr</code> and <code>wins_nwstr</code>
+      to match Solaris; make similar correction to
+      <code>wins_nwstr</code></p>
     </li>
 
     <li>
-      <p>modify <tt>waddch_literal</tt> to allow for double-width
-      base character when merging a combining character</p>
+      <p>correct internal function <code>wadd_wch_literal</code>
+      when adding a non-spacing character to a double-width
+      character</p>
+    </li>
+
+    <li>
+      <p>correct definition of <code>Charable</code> macro for
+      non-wide ncurses library .</p>
     </li>
   </ul>
 
@@ -263,7 +384,9 @@
   improvements</a></h3>
 
   <p id="h4-utilities">Several improvements were made to the
-  utility programs:</p>
+  utility programs. Some were done to make the <code>infocmp</code>
+  option &ldquo;<tt>-u</tt>&rdquo; option help refactor the
+  terminal database.</p>
 
   <dl>
     <dt><span class="part-name"><a href=
@@ -272,118 +395,131 @@
 
     <dd>
       <ul>
-        <li>rewrite <tt>canonical_name</tt> function of
-        <tt>infocmp</tt> to ensure buffer size</li>
+        <li>
+          <p>add limit checks for processing extended capabilities
+          with the &ldquo;<code>-u</code>&rdquo; option</p>
+        </li>
 
-        <li>improve readability of long parameterized expressions
-        with the infocmp &ldquo;<tt>-f</tt>&rdquo; option by
-        allowing split before a &ldquo;<tt>%p</tt>&rdquo;
-        marker.</li>
+        <li>
+          <p>correct initial alignment of extended capabilities, so
+          that the &ldquo;<code>-u</code>&rdquo; option can be used
+          for more than two terminal types</p>
+        </li>
 
-        <li>modify verbose-option of <tt>infocmp</tt>,
-        <tt>tic</tt>, <tt>toe</tt> to enable debug-tracing if that
-        is configured.</li>
+        <li>
+          <p>modify &ldquo;<code>-u</code>&rdquo; option to not
+          report cancels for strings which were already cancelled
+          in a use'd chunk.</p>
+        </li>
+
+        <li>
+          <p>correct an assignment &ldquo;<code>-u</code>&rdquo;
+          for detecting if a boolean is unset in a base entry and
+          set in a use'd chunk, i.e., if it was cancelled.</p>
+        </li>
       </ul>
     </dd>
 
     <dt><span class="part-name"><a href=
-    "@HOMEPAGE@/man/tabs.1.html">tabs</a></span>
+    "@HOMEPAGE@/man/tic.1m.html">tic</a></span>
     </dt>
 
-    <dd>limit tab-stop values to max-columns</dd>
+    <dd>
+      <ul>
+        <li>
+          <p>correct limit-check when dumping tc/use clause via
+          &ldquo;<code>-I</code>&rdquo;</p>
+        </li>
 
-    <dt><span class="part-name"><a href=
-    "@HOMEPAGE@/man/tic.1m.html">tic</a></span>
-    </dt>
+        <li>
+          <p>check return value of <code>_nc_save_str</code>, in
+          special case where extended capabilities are processed
+          but the terminal description was not initialized</p>
+        </li>
 
-    <dd>add consistency check in tic for u6/u7/u8/u9 and NQ
-    capabilities.</dd>
+        <li>
+          <p>modify check for multiply defined aliases to report
+          problems within the current runtime rather than for
+          conflicts with pre-existing terminal descriptions.</p>
+        </li>
+
+        <li>
+          <p>disallow using <code>$TERMINFO</code> or
+          <code>$HOME/.terminfo</code> when
+          &ldquo;<code>-o</code>&rdquo; option is used</p>
+        </li>
+      </ul>
+    </dd>
 
     <dt><span class="part-name"><a href=
-    "@HOMEPAGE@/man/tput.1.html">tput</a></span>
-    </dt>
+    "@HOMEPAGE@/man/tput.1.html">tput</a></span> and <span class=
+    "part-name"><a href=
+    "@HOMEPAGE@/man/tset.1.html">tset</a></span></dt>
+
+    <dd>
+      <ul>
+        <li>
+          <p>add &ldquo;<code>-v</code>&rdquo; option to tput, to
+          show warnings</p>
+        </li>
 
-    <dd>corrected use of original tty-modes in <em>init/reset</em>
-    subcommands</dd>
+        <li>
+          <p>modify <em>reset</em> command to avoid altering clocal
+          if the terminal uses a modem</p>
+        </li>
+
+        <li>
+          <p>modify <em>reset</em> feature to avoid 1-second sleep
+          if running in a pseudo-terminal</p>
+        </li>
+      </ul>
+    </dd>
   </dl>
 
   <h4><a name="h4-examples" id="h4-examples">Examples</a></h4>
 
   <p>Along with the library and utilities, improvements were made
   to the <a href=
-  "@HOMEPAGE@/ncurses-examples.html">ncurses-examples</a>. Most of
-  this activity aimed at improving the test-packages:</p>
+  "@HOMEPAGE@/ncurses-examples.html">ncurses-examples</a>:</p>
 
   <ul>
     <li>
-      <p>add minimal <tt>-h</tt> (usage) and <tt>-V</tt> (version)
-      getopt logic to all ncurses-examples programs.</p>
-    </li>
-
-    <li>
-      <p>fix an error in "@" command in <tt>test/ncurses.c</tt>
-      F-menu</p>
-    </li>
-
-    <li>
-      <p>add curses_trace to ifdef's for <tt>START_TRACE</tt> in
-      <tt>test/test.priv.h</tt></p>
-    </li>
-
-    <li>
-      <p>improve pthread-configuration for test/worm.c</p>
-    </li>
-
-    <li>
-      <p>add <tt>setlocale</tt> call to several test-programs.</p>
+      <p>modify <code>test_tparm</code> to account for extended
+      capabilities</p>
     </li>
 
     <li>
-      <p>workaround in <tt>test/picsmap.c</tt> for use of floating
-      point for rgb values by ImageMagick 6.9.11, which appears to
-      use the wrong upper limit.</p>
+      <p>corrected mouse mask in <code>test/testcurs.c</code></p>
     </li>
 
     <li>
-      <p>use static libraries for AdaCurses test-package for
-      Mageia, since no gprbuild package is available.</p>
+      <p>modify <code>test/clip_printw.c</code> to optionally test
+      non-wrapped updates</p>
     </li>
 
     <li>
-      <p>install Ada95 sample programs in libexecdir, adding a
-      wrapper script to invoke those.</p>
+      <p>modify <code>test/test_mouse.c</code> to use curses api
+      for raw/noraw</p>
     </li>
 
     <li>
-      <p>install ncurses-examples programs in libexecdir, adding a
-      wrapper script to invoke those.</p>
+      <p>modify <code>test/clip_printw.c</code> to optionally test
+      non-wrapped updates</p>
     </li>
   </ul>
 
-  <p>There are other new demo/test programs and reusable
-  examples:</p>
+  <p>There is one new demo/test programs:</p>
 
   <dl>
-    <dt><span class="part-name"><em>test/combine</em></span>
+    <dt><span class="part-name"><em>test/test_endwin.c</em></span>
     </dt>
 
-    <dd>demonstrate combining characters</dd>
-
-    <dt><span class="part-name"><em>test/test_delwin</em></span>
-    </dt>
-
-    <dd>demonstrate deleting a window</dd>
-
-    <dt><span class="part-name"><em>test/test_mouse</em></span>
-    </dt>
-
-    <dd>observe mouse events in the raw terminal or parsed ncurses
-    modes</dd>
-
-    <dt><span class="part-name"><em>test/test_unget_wch</em></span>
-    </dt>
-
-    <dd>demonstrate the unget_wch and unget functions</dd>
+    <dd>
+      <p>This program shows the return-status from
+      <code>endwin</code> with different combinations of
+      <code>endwin</code> (repeated), <code>initscr</code>,
+      <code>newterm</code>.</p>
+    </dd>
   </dl>
 
   <h3><a name="h3-database" id="h3-database">Terminal database</a></h3>
@@ -391,190 +527,159 @@
   <p>There are several new terminal descriptions:</p>
 
   <ul>
-    <li><tt><a href=
-    "@HOMEPAGE@/terminfo.src.html#tic-mosh">mosh</a></tt>
+    <li>
+      <p><a href=
+      "@HOMEPAGE@/terminfo.src.html#tic-ansi_apparrows"><tt>ansi+apparrows</tt></a></p>
     </li>
 
-    <li><tt><a href=
-    "@HOMEPAGE@/terminfo.src.html#tic-mosh-256color">mosh-256color</a></tt>
+    <li>
+      <p><a href=
+      "@HOMEPAGE@/terminfo.src.html#tic-contour"><tt>contour</tt></a></p>
     </li>
 
-    <li><tt><a href=
-    "@HOMEPAGE@/terminfo.src.html#tic-teken-16color">teken-16color</a></tt>
+    <li>
+      <p><a href=
+      "@HOMEPAGE@/terminfo.src.html#tic-linux_kbs"><tt>linux+kbs</tt></a>
+      for terminals which imitate xterm's behavior with Linux</p>
     </li>
 
-    <li><tt><a href=
-    "@HOMEPAGE@/terminfo.src.html#tic-teken-sc">teken-sc</a></tt>
+    <li>
+      <p><a href=
+      "@HOMEPAGE@/terminfo.src.html#tic-rio"><tt>rio</tt></a>,
+      <a href=
+      "@HOMEPAGE@/terminfo.src.html#tic-rio-direct"><tt>rio-direct</tt></a></p>
     </li>
 
-    <li><tt><a href=
-    "@HOMEPAGE@/terminfo.src.html#tic-teken-vt">teken-vt</a></tt>
+    <li>
+      <p><a href=
+      "@HOMEPAGE@/terminfo.src.html#tic-mostlike"><tt>mostlike</tt></a></p>
     </li>
 
-    <li><tt><a href=
-    "@HOMEPAGE@/terminfo.src.html#tic-xgterm">xgterm</a></tt>
+    <li>
+      <p><a href=
+      "@HOMEPAGE@/terminfo.src.html#tic-ms-vt100-16color"><tt>ms-vt100-16color</tt></a>,
+      <a href=
+      "@HOMEPAGE@/terminfo.src.html#tic-winconsole"><tt>winconsole</tt></a></p>
     </li>
-  </ul>
 
-  <p>There are many changes to existing terminal descriptions. Some
-  were updates to several descriptions:</p>
-
-  <ul>
     <li>
-      <p>make description-fields distinct</p>
+      <p><a href=
+      "@HOMEPAGE@/terminfo.src.html#tic-vt100_noapp"><tt>vt100+noapp</tt></a>,
+      <a href=
+      "@HOMEPAGE@/terminfo.src.html#tic-vt100_noapp_pc"><tt>vt100+noapp+pc</tt></a>,
+      <a href=
+      "@HOMEPAGE@/terminfo.src.html#tic-xterm_app_pc"><tt>xterm+app+pc</tt></a>,
+      <a href=
+      "@HOMEPAGE@/terminfo.src.html#tic-xterm_decedit"><tt>xterm+decedit</tt></a>
+      from <a href="@WEBSITE@/xterm/xterm.log.html#xterm_389">xterm
+      #389</a></p>
     </li>
 
     <li>
-      <p>fix errata in description fields</p>
+      <p><a href=
+      "@HOMEPAGE@/terminfo.src.html#tic-putty_cursor"><tt>putty+cursor</tt></a>
+      to reflect amending of modified cursor-keys in 2021</p>
     </li>
 
     <li>
-      <p>add/use several building-blocks:</p>
-
-      <ul>
-        <li><a href=
-        "@HOMEPAGE@/terminfo.src.html#tic-aixterm_sl"><tt>aixterm+sl</tt></a></li>
-
-        <li><a href=
-        "@HOMEPAGE@/terminfo.src.html#tic-ansi_cpr"><tt>ansi+cpr</tt></a></li>
-
-        <li><a href=
-        "@HOMEPAGE@/terminfo.src.html#tic-apollo_vt132"><tt>apollo+vt132</tt></a></li>
-
-        <li><a href=
-        "@HOMEPAGE@/terminfo.src.html#tic-decid_cpr"><tt>decid+cpr</tt></a></li>
-
-        <li><a href=
-        "@HOMEPAGE@/terminfo.src.html#tic-ncr260vp_sl"><tt>ncr260vp+sl</tt></a></li>
-
-        <li><a href=
-        "@HOMEPAGE@/terminfo.src.html#tic-wyse_sl"><tt>wyse+sl</tt></a></li>
-
-        <li><a href=
-        "@HOMEPAGE@/terminfo.src.html#tic-x10term_sl"><tt>x10term+sl</tt></a></li>
-
-        <li><a href=
-        "@HOMEPAGE@/terminfo.src.html#tic-xterm_acs"><tt>xterm+acs</tt></a></li>
-
-        <li><a href=
-        "@HOMEPAGE@/terminfo.src.html#tic-xterm_alt47"><tt>xterm+alt47</tt></a></li>
-      </ul>
+      <p><a href=
+      "@HOMEPAGE@/terminfo.src.html#tic-wezterm"><tt>wezterm</tt></a></p>
     </li>
   </ul>
 
-  <p>while others affected specific descriptions. These were
-  retested, to take into account changes by their developers:</p>
+  <p>There are many changes to existing terminal descriptions. Some
+  were updates to several descriptions, using the
+  <code>infocmp</code> &ldquo;<code>-u</code>&rdquo; option in a
+  script to determine which <em>building-block</em> entries could
+  be used to replace multiple capability settings (and trim
+  redundant information).</p>
+
+  <p>Other changes include:</p>
 
   <ul>
     <li>
-      <p><tt><a href=
-      "@HOMEPAGE@/terminfo.src.html#tic-kitty">kitty</a></tt>
-      </p>
+      <p><a href=
+      "@HOMEPAGE@/terminfo.src.html#toc-_X_T_E_R_M__Extensions_">document</a>
+      XF, kxIN and kxOUT</p>
     </li>
 
     <li>
-      <p><tt><a href=
-      "@HOMEPAGE@/terminfo.src.html#tic-teken">teken</a></tt>
-      </p>
+      <p>add note on <a href=
+      "@HOMEPAGE@/terminfo.src.html#tic-sun"><tt>sun</tt></a>
+      regarding wscons/cmdtool/shelltool</p>
     </li>
-  </ul>
 
-  <p>while these are specific fixes based on reviewing
-  documentation, user reports, or warnings from <span class=
-  "part-name">tic</span>:</p>
-
-  <dl>
-    <dt><a href=
-    "@HOMEPAGE@/terminfo.src.html#tic-att610_cvis0">att610+cvis0</a>
-    </dt>
-
-    <dd>amended note as per documentation for att610, att620,
-    att730</dd>
-
-    <dt><a href="@HOMEPAGE@/terminfo.src.html#tic-kon">kon</a>,
-    kon2, jfbterm</dt>
-
-    <dd>revise to undo "linux2.6" change to smacs/rmacs/enacs</dd>
-
-    <dt><a href=
-    "@HOMEPAGE@/terminfo.src.html#tic-st-0_6">st-0.6</a>
-    </dt>
-
-    <dd>add dim, ecma+strikeout</dd>
-
-    <dt><a href=
-    "@HOMEPAGE@/terminfo.src.html#tic-foot_base">foot+base</a>
-    </dt>
-
-    <dd>add xterm+sl-alt</dd>
-
-    <dt><a href=
-    "@HOMEPAGE@/terminfo.src.html#tic-dec_sl">dec+sl</a>
-    </dt>
-
-    <dd>correct dsl in dec+sl</dd>
-
-    <dt><a href=
-    "@HOMEPAGE@/terminfo.src.html#tic-mintty">mintty</a> and
-    tmux</dt>
-
-    <dd>correct setal in mintty/tmux entries, add to vte-2018</dd>
-
-    <dt><a href=
-    "@HOMEPAGE@/terminfo.src.html#tic-nsterm">nsterm</a>
-    </dt>
+    <li>
+      <p>remove DECCOLM+DECSCLM from <a href=
+      "@HOMEPAGE@/terminfo.src.html#tic-foot"><tt>foot</tt></a></p>
+    </li>
 
-    <dd>modify nsterm to use xterm+alt1049</dd>
+    <li>
+      <p>add xterm+focus to <a href=
+      "@HOMEPAGE@/terminfo.src.html#tic-foot_base"><tt>foot+base</tt></a></p>
+    </li>
 
-    <dt><a href="@HOMEPAGE@/terminfo.src.html#tic-putty">putty</a>
-    </dt>
+    <li>
+      <p>add ecma+strikeout to <a href=
+      "@HOMEPAGE@/terminfo.src.html#tic-putty"><tt>putty</tt></a></p>
+    </li>
 
-    <dd>modify putty to use xterm+alt1049</dd>
+    <li>
+      <p>use CSI 3J in <a href=
+      "@HOMEPAGE@/terminfo.src.html#tic-vte-2017"><tt>vte-2017</tt></a></p>
+    </li>
 
-    <dt><a href=
-    "@HOMEPAGE@/terminfo.src.html#tic-vte-2018">vte-2018</a>
-    </dt>
+    <li>
+      <p>use oldxterm+sm+1006 in <a href=
+      "@HOMEPAGE@/terminfo.src.html#tic-vte-2014"><tt>vte-2014</tt></a></p>
+    </li>
 
-    <dd>add blink and setal</dd>
-  </dl>
+    <li>
+      <p>modify <a href=
+      "@HOMEPAGE@/terminfo.src.html#tic-xgterm"><tt>xgterm</tt></a>
+      to work around line-drawing bug</p>
+    </li>
 
-  <p>A few entries use extensions (user-defined terminal
-  capabilities):</p>
+    <li>
+      <p>add xterm focus mode 1004 to <a href=
+      "@HOMEPAGE@/terminfo.src.html#tic-xterm_focus"><tt>xterm+focus</tt></a>
+      as fe/fd capabilities, like vim.</p>
+    </li>
 
-  <ul>
     <li>
-      <p>use <tt>ansi+enq</tt> and <tt>decid+cpr</tt> in cases
-      where the terminal probably supported the u6-u9 extension</p>
+      <p>add xterm+focus to <a href=
+      "@HOMEPAGE@/terminfo.src.html#tic-alacritty_common"><tt>alacritty+common</tt></a></p>
     </li>
 
     <li>
-      <p>remove u6-u9 from teken-2018</p>
+      <p>add XR/xr, to work with vim, and use RV/rv to denote DA2
+      and its response</p>
     </li>
 
     <li>
-      <p>use <tt>NQ</tt> to flag entries where the terminal does
-      not support query and response</p>
+      <p>add XF flag to <a href=
+      "@HOMEPAGE@/terminfo.src.html#tic-xterm_focus"><tt>xterm+focus</tt></a>
+      so that termcap applications can be aware of terminals which
+      may support focus in/out</p>
     </li>
 
     <li>
-      <p>add/use <a href=
-      "@HOMEPAGE@/terminfo.src.html#tic-bracketed_paste"><tt>bracketed+paste</tt></a>
-      to help identify terminals supporting this xterm feature</p>
+      <p>use xterm+focus in <a href=
+      "@HOMEPAGE@/terminfo.src.html#tic-xterm-p370"><tt>xterm-p370</tt></a>
+      and <a href=
+      "@HOMEPAGE@/terminfo.src.html#tic-tmux"><tt>tmux</tt></a></p>
     </li>
 
     <li>
-      <p>modify samples for xterm mouse 1002/1003 modes to use 1006
-      mode, and also provide for focus in/out responses</p>
+      <p>remove xterm+sm+1006 from <a href=
+      "@HOMEPAGE@/terminfo.src.html#tic-tmux"><tt>tmux</tt></a></p>
     </li>
 
     <li>
-      <p>xterm patch #371 supports DEC-compatible status-line. add
-      <tt>dec+sl</tt> to xterm-new, per xterm #371, add <a href=
-      "@HOMEPAGE@/terminfo.src.html#tic-xterm-p371"><tt>xterm-p371</tt></a>,
-      add <a href=
-      "@HOMEPAGE@/terminfo.src.html#tic-xterm-p370"><tt>xterm-p370</tt></a>,
-      for use in older terminals, and set &ldquo;xterm-new&rdquo;
-      to &ldquo;xterm-p370&rdquo; (to ease adoption).</p>
+      <p>NetBSD-related fixes for <a href=
+      "@HOMEPAGE@/terminfo.src.html#tic-x68k"><tt>x68k</tt></a> and
+      <a href=
+      "@HOMEPAGE@/terminfo.src.html#tic-wsvt25"><tt>wsvt25</tt></a></p>
     </li>
   </ul>
 
@@ -610,103 +715,88 @@
 
       <ul>
         <li>
-          <p>remove a stray '/' from description of <tt>%g</tt> in
-          <a href=
-          "@HOMEPAGE@/man/terminfo.5.html#h3-Parameterized-Strings">
-          terminfo(5)</a>.</p>
+          <p>add assignment in <code>CF_MAN_PAGES</code> to fill in
+          value for <code>TERMINFO_DIRS</code> in ncurses, terminfo
+          and tic manpages.</p>
         </li>
 
         <li>
-          <p>correct/improve font-formatting in <a href=
-          "@HOMEPAGE@/man/curs_getch.3x.html">curs_getch.3x</a>, as
-          well as other manual pages.</p>
+          <p>clarify interaction of <code>-R</code> option versus
+          <code>-C</code>, <code>-I</code> and <code>-r</code> in
+          <code>infocmp</code> manpage.</p>
         </li>
-      </ul>
-    </li>
-
-    <li>
-      <p>New/improved history and portability sections:</p>
 
-      <ul>
         <li>
-          <p>add portability notes for <a href=
-          "@HOMEPAGE@/man/curs_initscr.3x.html#h2-PORTABILITY">delscreen</a>
-          and <a href=
-          "@HOMEPAGE@/man/curs_window.3x.html#h2-PORTABILITY">delwin</a>
-          in manual.</p>
+          <p>correct manpage description of panel_hidden.</p>
         </li>
 
         <li>
-          <p>improve <a href=
-          "@HOMEPAGE@/man/curs_slk.3x.html#h2-EXTENSIONS">curs_slk.3x</a>
-          discussion of extensions and portability</p>
+          <p>improve manpage description for addch versus unctrl
+          format used for non-printable characters.</p>
         </li>
-      </ul>
-    </li>
 
-    <li>
-      <p>Other improvements:</p>
-
-      <ul>
         <li>
-          <p>improve <a href=
-          "@HOMEPAGE@/man/curs_bkgd.3x.html">curs_bkgd.3x</a>,
-          explaining that <tt>bkgdset</tt> can affect results for
-          <tt>bkgd</tt></p>
+          <p>improve manpages discussing file descriptors in
+          low-level functions.</p>
         </li>
 
         <li>
-          <p>add note on portable memory-leak checking in <a href=
-          "@HOMEPAGE@/man/curs_memleaks.3x.html#h2-PORTABILITY">curs_memleaks.3x</a></p>
+          <p>improve description of search rules for terminal
+          descriptions in terminfo manpage.</p>
         </li>
 
         <li>
-          <p>expanded description in <a href=
-          "@HOMEPAGE@/man/resizeterm.3x.html">resizeterm.3x</a></p>
+          <p>modify dist.mk to avoid passing developer's comments
+          in manpages into the generated html documentation.</p>
         </li>
 
         <li>
-          <p>add section on releasing memory to <a href=
-          "@HOMEPAGE@/man/curs_termcap.3x.html#h3-Releasing-Memory">
-          curs_termcap.3x</a> and <a href=
-          "@HOMEPAGE@/man/curs_terminfo.3x.html#h3-Releasing-Memory">
-          curs_terminfo.3x</a> manpages.</p>
+          <p>modify test-package "ncurses6-doc" to use
+          manpage-aliases, which in turn required a change to the
+          configure script to factor in the extra-suffix option
+          when deriving alias names.</p>
         </li>
+      </ul>
+    </li>
 
+    <li>
+      <p>New/improved history and portability sections:</p>
+
+      <ul>
         <li>
-          <p>add clarification of the scope of dynamic variables in
-          <a href=
-          "@HOMEPAGE@/man/terminfo.5.html">terminfo(5)</a>.</p>
+          <p>add information about "ttycap", termcap's forerunner,
+          to tset.1</p>
         </li>
 
         <li>
-          <p>improve formatting of <a href=
-          "@HOMEPAGE@/ncurses-intro.html">ncurses-intro.html</a>
-          and <a href=
-          "@HOMEPAGE@/hackguide.html">hackguide.html</a></p>
+          <p>document limitations of tparm, and error-returns in
+          curs_terminfo.3x</p>
         </li>
 
         <li>
-          <p>improve <a href=
-          "@HOMEPAGE@/man/curs_clear.3x.html">curs_clear.3x</a>
-          links to other pages</p>
+          <p>document limitations of tgoto, and error-returns in
+          curs_termcap.3x</p>
         </li>
+      </ul>
+    </li>
+
+    <li>
+      <p>Other improvements:</p>
 
+      <ul>
         <li>
-          <p>update <a href=
-          "@HOMEPAGE@/howto/NCURSES-Programming-HOWTO.html">ncurses-howto</a>,
-          making documentation fixes along with corrections to
-          example programs.</p>
+          <p>This release has many changes to improve the
+          formatting and style of the manpages.</p>
         </li>
 
         <li>
-          <p>use newer version 1.36 of gnathtml for generating Ada
-          html files.</p>
+          <p>Manpages now use consistent section-naming, page
+          headers and footers (including the modification date for
+          each page).</p>
         </li>
 
         <li>
-          <p>update external links in <a href=
-          "@HOMEPAGE@/Ada95.html">Ada95.html</a></p>
+          <p>Table layout has been revised.</p>
         </li>
       </ul>
     </li>
@@ -718,93 +808,162 @@
   <h3><a name="h3-bug-fixes" id="h3-bug-fixes">Interesting
   bug-fixes</a></h3>
 
-  <p>While there were many bugs fixed during development of ncurses
-  6.4, 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 <a href=
-  "@HOMEPAGE@/NEWS.html#t20221231">NEWS</a> file no elaboration is
-  needed here.</p>
+  <p>The changes to <tt>tparm</tt>, <tt>tgoto</tt> which improve
+  the design of the low-level interfaces are <em>interesting</em>,
+  but are not bug-fixes <em>per se</em>.</p>
+
+  <h3><a name="h3-config-config" id=
+  "h3-config-config">Configuration changes</a></h3>
+
+  <h4><a name="h4-config-major" id="h4-config-major">Major
+  changes</a></h4>
 
-  <p>The interesting bugs were those dealing with memory leaks and
-  buffer overflows. Although the utilities are designed for
-  <em>text</em> files (which they do properly), some choose to test
-  them with <strong>non-</strong><em>text</em> files.</p>
+  <p>These are the major changes (aside from introducing <a href=
+  "#h4-new-library"><tt>tiparm_s</tt></a>):</p>
 
   <ul>
     <li>
-      <p>Text files contain no embedded nulls. Also, they end with
-      a newline. Feeding <strong>tic</strong> non-text files
-      exposed a few cases where the program did not check for those
-      issues. As a result, further processing of the input found
-      limit-checks whose assumptions were invalid.</p>
+      <p>use wide-character (ncursesw) by default</p>
     </li>
 
     <li>
-      <p>Fixing the limit-checks (first) found a problem with
-      <strong>tic</strong> managing the list of strings in a
-      terminal description. In merging two terminal descriptions
-      (i.e., the &ldquo;use=&rdquo; feature), <strong>tic</strong>
-      was not allocating a complete copy. A quick repair for that
-      introduced a memory leak.</p>
+      <p>use opaque typedefs by default</p>
     </li>
+  </ul>
 
+  <p>However, most of the work on configure scripts was done to
+  reduce warnings within the configure script:</p>
+
+  <ul>
     <li>
-      <p>The checks for non-text files are improved (i.e., embedded
-      nulls in the input file will cause <strong>tic</strong> to
-      reject it rather than attempting to process it).</p>
+      <p>intrusive warnings from GNU grep regarding fgrep and
+      egrep</p>
     </li>
 
     <li>
-      <p>The string allocations in <strong>tic</strong> are
-      likewise improved.</p>
+      <p>fatal errors in compile-checks, arising from recent
+      &ldquo;Modern&nbsp;C&rdquo; efforts by some developers which
+      caused longstanding configure checks to fail.</p>
+
+      <p>After repairing the configure script, none of that
+      activity affected ncurses because stricter warnings are used
+      routinely in development.</p>
     </li>
   </ul>
 
-  <h3><a name="h3-config-config" id=
-  "h3-config-config">Configuration changes</a></h3>
+  <p>Other improvements made to configure checks include</p>
 
-  <h4><a name="h4-config-major" id="h4-config-major">Major
-  changes</a></h4>
+  <ul>
+    <li>
+      <p>use <a href=
+      "@HOMEPAGE@/INSTALL.html#option:enable-string-hacks">string-hacks</a>
+      in alloc_entry.c, alloc_type.c and hardscroll.c, overlooked
+      due to compiler changes in recent OpenBSD releases</p>
+    </li>
+
+    <li>
+      <p>revise progs.priv.h to provide for NC_ISATTY reuse</p>
+    </li>
+
+    <li>
+      <p>configure check for MB_LEN_MAX provides warning as
+      needed</p>
+    </li>
+
+    <li>
+      <p>trim a space after some "-R" options, fixing builds for
+      applications built using clang and ncurses on Solaris</p>
+    </li>
 
-  <p>There are no major changes. No new options were added. Several
-  improvements were made to configure checks.</p>
+    <li>
+      <p>work around misconfiguration of MacPorts gcc13, which
+      exposes invalid definition of <tt>MB_LEN_MAX</tt> in gcc's
+      fallback copy of <tt>limits.h</tt></p>
+    </li>
+
+    <li>
+      <p>modified experimental Windows driver works with xterm
+      mouse protocol</p>
+    </li>
+  </ul>
 
   <h4><a name="h4-config-options" id=
   "h4-config-options">Configuration options</a></h4>
 
-  <p>There are a few new/modified configure options:</p>
+  <p>There are a few new configure options:</p>
 
   <dl>
-    <dt><tt>--with-abi-version</tt>
+    <dt><a href=
+    "@HOMEPAGE@/INSTALL.html#option:disable-setuid-environ"><tt>--disable-setuid-environ</tt></a>
     </dt>
 
     <dd>
-      <p>add ABI 7 defaults to configure script.</p>
+      <p>Compile with environment restriction, so certain
+      environment variables are not available when running via a
+      setuid/setgid application. These are (for example
+      <tt>$TERMINFO</tt>) those that allow the search path for the
+      terminfo or termcap entry to be customized.</p>
+
+      <p>A setuid/setgid application inherits its environment
+      variables from the current user, in contrast to sudo which
+      may limit the environment variables that ncurses uses.</p>
     </dd>
 
-    <dt><tt>--with-caps</tt>
+    <dt><a href=
+    "@HOMEPAGE@/INSTALL.html#option:enable-check-size"><tt>--enable-check-size</tt></a>
     </dt>
 
     <dd>
-      <p>add warning in configure script if file specified for
-      &ldquo;<tt>--with-caps</tt>&rdquo; does not exist.</p>
+      <p>Compile-in feature to detect screensize for terminals
+      which do not advertise their screensize, e.g., serial
+      terminals.</p>
     </dd>
 
-    <dt><tt>--with-manpage-format</tt>
+    <dt><a href=
+    "@HOMEPAGE@/INSTALL.html#option:with-abi-altered"><tt>--with-abi-altered=<em>NUM</em></tt></a>
     </dt>
 
     <dd>
-      <p>bzip2 and xz compression are now supported</p>
+      <p>Override the displayed (rather than compiled-in) ABI. Only
+      packagers who have created configurations where the ABI
+      differs from ncurses should be interested in this option.</p>
     </dd>
 
-    <dt><tt>--with-xterm-kbs</tt>
+    <dt><a href=
+    "@HOMEPAGE@/INSTALL.html#option:with-strip-program"><tt>--with-strip-program=<em>XXX</em></tt></a>
     </dt>
 
     <dd>
-      <p>add check/warning in configure script if option
-      &ldquo;<tt>--with-xterm-kbs</tt>&rdquo; is missing or
-      inconsistent</p>
+      <p>When stripping executables during install, use the
+      specified program rather than &ldquo;strip&rdquo; overriding
+      program chosen by the install program for stripping
+      executables.</p>
+    </dd>
+  </dl>
+
+  <p>These configure options are modified:</p>
+
+  <dl>
+    <dt><a href=
+    "@HOMEPAGE@/INSTALL.html#option:with-pkg-config-libdir"><tt>--with-pkg-config-libdir[=<em>DIR</em>]</tt></a>
+    </dt>
+
+    <dd>
+      <p>The optional <em>DIR</em> parameter can now be
+      &ldquo;auto&rdquo; to automatically use pkg-config's library
+      directory.</p>
+
+      <p>The default is <tt>$(libdir)</tt>.</p>
+    </dd>
+
+    <dt><a href=
+    "@HOMEPAGE@/INSTALL.html#option:with-xterm-kbs"><tt>--with-xterm-kbs[=<em>XXX</em>]</tt></a>
+    </dt>
+
+    <dd>
+      <p>The default is &ldquo;auto&rdquo; which tells the
+      configure script to choose BS or DEL according to platform
+      defaults.</p>
     </dd>
   </dl>
 
@@ -815,100 +974,117 @@
 
   <ul>
     <li>
-      <p>amend configure option's auto-search to account for
-      systems where none of the directories known to
-      <em>pkg-config</em> exist</p>
+      <p>add/use configure check for <code>clock_gettime</code>, to
+      supersede <code>gettimeofday</code>.</p>
     </li>
 
     <li>
-      <p>corrected regex needed for older <em>pkg-config</em> used
-      in Solaris 10</p>
+      <p>modify configure script check for pkg-config library
+      directory to take into account an older version 0.15.0 which
+      used PKG_CONFIG_PATH but not PKG_CONFIG_LIBDIR</p>
     </li>
 
     <li>
-      <p>improve handling of <tt>--with-pkg-config-libdir</tt>
-      option, allowing for the case where either
-      <tt>$PKG_CONFIG_LIBDIR</tt> or the option value has a
-      colon-separated list of directories</p>
+      <p>allow for MinGW32-/64-bit configurations to use
+      _DEFAULT_SOURCE</p>
     </li>
 
     <li>
-      <p>if the <tt>--with-pkg-config-libdir</tt> option is not
-      given, use <tt>${libdir}/pkgconfig</tt> as a default</p>
+      <p>modify CF_XOPEN_SOURCE macro's amend default case to avoid
+      undefining _XOPEN_SOURCE if _POSIX_C_SOURCE is defined</p>
     </li>
 
     <li>
-      <p>improve search-path check for <em>pkg-config</em>, e.g.,
-      for Debian testing which installs <em>pkg-config</em> with
-      architecture-prefixes.</p>
+      <p>updated configure script macro CF_XOPEN_SOURCE, for
+      uClibc-ng</p>
     </li>
 
     <li>
-      <p>build-fix for cross-compiling to MingW, conditionally add
-      <tt>-lssp</tt></p>
+      <p>modify version-check for gcc/g++, now works for msys2</p>
     </li>
 
     <li>
-      <p>improve configure check for <tt>getttynam</tt></p>
+      <p>build-fixes related to configure-options and/or
+      platform:</p>
+
+      <ul>
+        <li>fix for <tt>--enable-fvisibility</tt></li>
+
+        <li>fix for unusual values of
+        <tt>--with-rel-version</tt></li>
+
+        <li>fix for unusual values of
+        <tt>--with-abi-version</tt></li>
+
+        <li>fix for <tt>--disable-tcap-names</tt></li>
+
+        <li>fix for termcap in <tt>nc_access.h</tt></li>
+      </ul>
     </li>
 
     <li>
-      <p>fixes to build with <em>dietlibc</em>:</p>
+      <p>other configure-script improvements:</p>
 
       <ul>
-        <li>add configure check for <tt>fpathconf</tt></li>
+        <li>recent msys2 headers work with
+        <tt>_DEFAULT_SOURCE</tt>; amend check</li>
 
-        <li>add configure check for math sine/cosine, needed in
-        test/tclock, and eliminate <tt>pow()</tt> from
-        test/hanoi</li>
+        <li>use <tt>$ac_includes_default</tt> in most cases where
+        stdlib.h should work</li>
 
-        <li>use <tt>wcsnlen</tt> as an alternative to
-        <tt>wmemchr</tt> if it is not found</li>
+        <li>use <tt>#error</tt> consistently vs "make an
+        error"</li>
+
+        <li>add configure macro for <tt>gettimeofday</tt> vs inline
+        check</li>
       </ul>
     </li>
+  </ul>
 
+  <p>Here are some of the other portability fixes:</p>
+
+  <ul>
     <li>
-      <p>modify configure macro <tt>CF_BUILD_CC</tt> to check if
-      the build-compiler works, rather than that it is different
-      from the cross-compiler, e.g., to accommodate a compiler
-      which can be used for either purpose with different flags</p>
+      <p>modify configure scripts/makefiles to omit
+      <tt>KEY_RESIZE</tt> if the corresponding <tt>SIGWINCH</tt>
+      feature is disabled</p>
     </li>
 
     <li>
-      <p>modify configure/scripts to work around interference by
-      GNU grep 3.8</p>
+      <p>increase <tt>MB_CUR_MAX</tt> to 16, matching glibc's
+      <tt>MB_LEN_MAX</tt></p>
     </li>
-  </ul>
 
-  <p>Here are some of the other portability fixes:</p>
+    <li>
+      <p>add BSD <tt>erase2</tt> to characters handled by
+      tset/reset</p>
+    </li>
 
-  <ul>
     <li>
-      <p>change <tt>man_db.renames</tt> to template, to handle
-      <em>ncurses*-config</em> script with the
-      <tt>--extra-suffix</tt> configure option.</p>
+      <p>use <tt>getauxval</tt> when available, to improve
+      <tt>setuid</tt>/<tt>setgid</tt> checks</p>
     </li>
 
     <li>
-      <p>update <tt>CF_XOPEN_SOURCE</tt> macro, adding variants
-      &ldquo;gnueabi" and &ldquo;gnueabihf" to get
-      <tt>_DEFAULT_SOURCE</tt> special case, as well as adding GNU
-      libc suffixes for &ldquo;abi64&rdquo;, &ldquo;abin32&rdquo;,
-      &ldquo;x32&rdquo; to distinguish it from other libc
-      flavors.</p>
+      <p>set <tt>dwShareMode</tt> in calls to
+      <tt>CreateConsoleScreenBuffer</tt></p>
     </li>
 
     <li>
-      <p>work around <em>musl</em>'s nonstandard use of feature
-      test macros by adding a definition for
-      <tt>NCURSES_WIDECHAR</tt> to the generated &ldquo;.pc&rdquo;
-      and <em><tt>*-config</tt></em> files.</p>
+      <p>use <tt>CreateFile</tt> with "<tt>CONIN$</tt>",
+      "<tt>CONOUT$</tt>" rather than <tt>GetStdHandle</tt> to
+      obtain a handle on the actual console, avoiding redirection
+      in the MinGW/Win32 configurations</p>
     </li>
 
     <li>
-      <p>use &ldquo;<tt>command -v</tt>&rdquo; rather than
-      &ldquo;<tt>type</tt>&rdquo; in <tt>Ada95/gen/Makefile.in</tt>
-      to fix a portability issue.</p>
+      <p>modify MinGW driver to return <tt>KEY_BACKSPACE</tt> when
+      an unmodified <tt>VK_BACK</tt> virtual key is entered</p>
+    </li>
+
+    <li>
+      <p>modify MinGW configuration to provide for running in
+      MSYS/MSYS2 shells, assuming ConPTY support</p>
     </li>
   </ul>
 
@@ -927,30 +1103,31 @@
     </li>
 
     <li>
-      <p><span class="main-name">ncurses</span> supports all of the
-      for SVr4 curses features including keyboard mapping, color,
-      forms-drawing with ACS characters, and automatic recognition
+      <p><span class="main-name">ncurses</span> supports the
+      features of SVr4 curses including keyboard mapping, color,
+      form drawing with ACS characters, and automatic recognition
       of keypad and function keys.</p>
     </li>
 
     <li>
-      <p><span class="main-name">ncurses</span> provides these SVr4
-      add-on libraries (not part of X/Open Curses):</p>
+      <p><span class="main-name">ncurses</span> provides work-alike
+      replacements of SVr4 supplemental libraries based on curses,
+      but which were not specified by X/Open Curses:</p>
 
       <ul>
         <li>
-          <p>the panels library, supporting a stack of windows with
-          backing store.</p>
+          <p>the panel library, supporting a stack of windows with
+          backing store</p>
         </li>
 
         <li>
-          <p>the menus library, supporting a uniform but flexible
-          interface for menu programming.</p>
+          <p>the menu library, supporting a uniform but flexible
+          interface for menu programming</p>
         </li>
 
         <li>
           <p>the form library, supporting data collection through
-          on-screen forms.</p>
+          on-screen forms</p>
         </li>
       </ul>
     </li>
@@ -962,7 +1139,7 @@
       <ul>
         <li>
           <p><span class="main-name">ncurses</span> supports
-          user-defined capabilities which it can see, but which are
+          user-defined capabilities that it can see, but which are
           hidden from SVr4 curses applications using the
           <em>same</em> terminal database.</p>
         </li>
@@ -994,8 +1171,8 @@
   <ul>
     <li>
       <p>The API is 8-bit clean and base-level conformant with the
-      X/OPEN curses specification, XSI curses (that is, it
-      implements all <em>BASE</em> level features, and most
+      X/Open Curses specification, XSI curses (that is, it
+      implements all <em>BASE</em> level features, and almost all
       <em>EXTENDED</em> features). It includes many function calls
       not supported under SVr4 curses (but portability of all calls
       is documented so you can use the SVr4 subset only).</p>
@@ -1135,10 +1312,27 @@
     </li>
 
     <li>
-      <p>The library meets the XSI requirement that every macro
-      entry point has a corresponding function which may be linked
-      (and will be prototype-checked) if the macro definition is
-      disabled with <code>#undef</code>.</p>
+      <p>X/Open Curses permits most functions it specifies to be
+      made available as macros as well. ncurses does this</p>
+
+      <ul>
+        <li>to improve performance, e.g., for operations composed
+        of simpler functions such as cursor movement following by
+        adding text to the screen,</li>
+
+        <li>to simplify the implementation by reusing functions
+        which use common parameters, e.g., the standard screen
+        <code>stdscr</code>, and</li>
+
+        <li>to provide functions that return values via their
+        parameters</li>
+      </ul>
+
+      <p>Except for the last case, ncurses provides a non-macro
+      implementation of the function. If the macro definition is
+      disabled with <code>#undef</code>, or by defining
+      <code>NCURSES_NOMACROS</code> the function may be linked (and
+      its calls will be checked against the prototype).</p>
     </li>
 
     <li>
@@ -1240,7 +1434,8 @@
         <p>New vi uses ncurses.</p>
 
         <p><a href=
-        "https://sites.google.com/a/bostic.com/keithbostic/vi">https://sites.google.com/a/bostic.com/keithbostic/vi</a><br>
+        "https://sites.google.com/a/bostic.com/keithbostic/the-berkeley-vi-editor-home-page">
+        https://sites.google.com/a/bostic.com/keithbostic/the-berkeley-vi-editor-home-page</a><br>
 
         </p>
       </dd>
@@ -1288,7 +1483,7 @@
         <p>terminal emulator for serial modem connections</p>
 
         <p><a href=
-        "https://alioth.debian.org/projects/minicom/">https://alioth.debian.org/projects/minicom/</a></p>
+        "https://salsa.debian.org/minicom-team/minicom">https://salsa.debian.org/minicom-team/minicom</a></p>
       </dd>
 
       <dt><span class="part-name">mosh</span>
@@ -1432,19 +1627,17 @@
 
   <blockquote>
     <p><a href=
-    "https://invisible-island.net/archives/ncurses/6.3/">https://invisible-island.net/archives/ncurses/6.3/</a>
+    "https://invisible-island.net/archives/ncurses/6.4/">https://invisible-island.net/archives/ncurses/6.4/</a>
     and<br>
     <a href=
-    "https://invisible-mirror.net/archives/ncurses/6.3/">https://invisible-mirror.net/archives/ncurses/6.3/</a>&nbsp;.</p>
+    "https://invisible-mirror.net/archives/ncurses/6.4/">https://invisible-mirror.net/archives/ncurses/6.4/</a>&nbsp;.</p>
   </blockquote>
 
   <p>There is an archive of the mailing list here:</p>
 
   <blockquote>
     <p><a href=
-    "http://lists.gnu.org/archive/html/bug-ncurses">http://lists.gnu.org/archive/html/bug-ncurses</a>
-    (also <a href=
-    "https://lists.gnu.org/archive/html/bug-ncurses">https</a>)</p>
+    "https://lists.gnu.org/archive/html/bug-ncurses">https://lists.gnu.org/archive/html/bug-ncurses</a>&nbsp;.</p>
   </blockquote>
 
   <h2><a name="h2-this-stuff" id="h2-this-stuff">Related
@@ -1486,14 +1679,15 @@
   <a href="http://www.catb.org/~esr/terminfo/">Eric
   Raymond</a>&nbsp;. 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
+  several user-definable extensions beyond the X/Open Curses
   specification.</p>
 
   <p>You can find lots of information on terminal-related topics
-  not covered in the terminfo file at <a href=
-  "http://web.archive.org/web/*/http://www.cs.utk.edu/~shuford/terminal">
-  Richard Shuford's archive</a>&nbsp;. The collection of computer
-  manuals at <a href=
+  not covered in the terminfo file in <a href=
+  "https://shuford.invisible-island.net/">Richard Shuford's
+  archive</a> (<a href=
+  "http://web.archive.org/web/*/http://www.cs.utk.edu/~shuford/terminal">original</a>).
+  The collection of computer manuals at <a href=
   "http://www.bitsavers.org/pdf/">bitsavers.org</a> has also been
   useful.</p>