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<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 3.0//EN"><!-- $Id: announce.html,v 1.46 2004/01/18 01:28:19 tom Exp $--><HTML><HEAD><TITLE>Announcing ncurses 5.4</TITLE><link rev=made href="mailto:bug-ncurses@gnu.org"><meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"></HEAD><BODY><H1>Announcing ncurses 5.4</H1>The ncurses (new curses) library is a free software emulation ofcurses in System V Release 4.0, and more. It uses terminfo format,supports pads and colorand multiple highlights and forms characters and function-key mapping,and has all the other SYSV-curses enhancements over BSD curses.<P>In mid-June 1995, the maintainer of 4.4BSD curses declared that heconsidered 4.4BSD curses obsolete, and is encouraging the keepers ofUnix releases such as BSD/OS, freeBSD and netBSD to switch over toncurses.<P>The ncurses code was developed under GNU/Linux.It has been in use for some time with OpenBSD as the system curses library,and on FreeBSD and NetBSD as an external package.It should port easily to any ANSI/POSIX-conforming UNIX.It has even been ported to OS/2 Warp!<P>The distribution includes the library and support utilities, including aterminfo compiler tic(1), a decompiler infocmp(1), clear(1), tput(1), tset(1),and a termcap conversion tool captoinfo(1). Full manual pages are provided forthe library and tools.<P>The ncurses distribution is available via anonymous FTP atthe GNU distribution site<A HREF="ftp://ftp.gnu.org/gnu/ncurses/">ftp://ftp.gnu.org/gnu/ncurses/</A> .<br>It is also available at<A HREF="ftp://invisible-island.net/ncurses/">ftp://invisible-island.net/ncurses/</A> .<H1>Release Notes</H1>This release is designed to be upward compatible from ncurses 5.0 and 5.3;very few applications will require recompilation, depending on the platform.These are the highlights from the change-log since ncurses 5.3 release.<p>Interface changes:<ul> <li>add the remaining functions for X/Open curses wide-character support. <ul> <li>pecho_wchar() <li>slk_wset() </ul> These are only available if the library is configured using the <kbd>--enable-widec</kbd> option. <li>write <code>getyx()</code> and related 2-return macros in terms of <code>getcury()</code>, <code>getcurx()</code>, etc. <li>simplify ifdef for <code>bool</code> declaration in curses.h <li>modify ifdef's in curses.h that disabled use of <code>__attribute__()</code> for g++, since recent versions implement the cases which ncurses uses. <li>add <code>key_defined()</code> function, to tell which keycode a string is bound to.</ul>New features and improvements:<ul> <li>library <ul> <li>implement logic in lib_mouse.c to handle position reports which are generated when XFree86 xterm is initialized with private modes 1002 or 1003. These are returned to the application as the REPORT_MOUSE_POSITION mask, which was not implemented. <li>modify soft-key initialization to use A_REVERSE if A_STANDOUT would not be shown when colors are used, i.e., if ncv#1 is set in the terminfo as is done in "screen". <li>add configure option for FreeBSD sysmouse, --with-sysmouse, and implement library support for that. </ul> <li>programs: <ul> <li>tack: <ul> <li>allow it to run from fallback terminfo data. <li>reset colors after each color test, correct a place where <code>exit_standout_mode</code> was used instead of <code>exit_attribute_mode</code>. <li>improve <code>bce</code> test by making it set colors other than black on white. </ul> <li>tic: <ul> <li>handle a case where an entry has no description, and capabilities begin on the same line as the entry name. <li>allow a terminfo entry with a leading 2-character name. <li>improved warnings when suppressing items to fit in termcap's 1023-byte limit. <li>add check for multiple "tc=" clauses in a termcap. <li>correct logic for resolving "use=" clauses allow infocmp and tic to show cancelled capabilities. <li>check for incomplete line-drawing character mapping. <li>check for missing/empty/illegal terminfo name. </ul> <li>tput: <ul> <li>modify tput to use the same parameter analysis as tparm() does, to provide for user-defined strings, e.g., for xterm title, a corresponding capability might be title=\E]2;%p1%s^G, </ul> <li>tset: <ul> <li>use the system's default values for CKILL and other default control characters. <li>correct interchanged defaults for kill and interrupt characters, which caused it to report unnecessarily. </ul> </ul></ul>Major bug fixes:<ul> <li>prevent recursion in wgetch() via wgetnstr() if the connection cannot be switched between cooked/raw modes because it is not a TTY. <li>correct a case in _nc_remove_string(), used by <code>define_key()</code>, to avoid infinite loop if the given string happens to be a substring of other strings which are assigned to keys. <li>modify logic of acsc to use the original character if no mapping is defined, rather than a null. <li>several improvements for handling multi-cell display of wide characters. <ul> <li>modify setcchar() to allow converting control characters to complex characters. <li>correct handling of multibyte characters in waddch_literal() which force wrapping because they are started too late on the line. <li>modify setcchar() to allow for wchar_t input strings that have more than one spacing character. </ul> <li>other fixes for wide-character support: <ul> <li>rewrote lib_acs.c to allow PutAttrChar() to decide how to render alternate-characters, i.e., to work with Linux console and UTF-8 locale. <li>implement a workaround so that line-drawing works with screen's crippled UTF-8 support (tested with 3.9.13). This only works with the wide-character support (--enable-widec); the normal library will simply suppress line-drawing when running in a UTF-8 locale in screen. <li>corrections to lib_get_wstr.c: <ul> <li>null-terminate buffer passed to setcchar(), which occasionally failed. <li>map special characters such as erase- and kill-characters into key-codes so those will work as expected even if they are not mentioned in the terminfo. </ul> </ul> <li>modify <code>setupterm()</code> to check if the terminfo and terminal-modes have already been read. This ensures that it does not reinvoke <code>def_prog_mode()</code> when an application calls more than one function, such as <code>tgetent()</code> and <code>initscr()</code>. <li>fix form_driver() cases for REQ_CLR_EOF, REQ_CLR_EOL, REQ_DEL_CHAR, REQ_DEL_PREV and REQ_NEW_LINE, which did not ensure the cursor was at the editing position before making modifications. <li>correct <code>keybound()</code>, which reported definitions in the wrong table, i.e., the list of definitions which are disabled by <code>keyok()</code>. <li>fixes related to safe_sprintf.c: <ul> <li>correct an allocation size in safe_sprintf.c for the "*" format code. <li>correct safe_sprintf.c to not return a null pointer if the format happens to be an empty string. <li>make return value from _nc_printf_string() consistent. Before, depending on whether --enable-safe-sprintf was used, it might not be cached for reallocating. </ul> <li>other low-level improvements to the optimization code include: <ul> <li>if the output is a socket or other non-tty device, use 1 millisecond for the cost in mvcur; previously it was 9 milliseconds because the baudrate was not known. <li>modify lib_getch.c to avoid recursion via wgetnstr() when the input is not a tty and consequently mode-changes do not work. <li>fix several places in tack/pad.c which tested and used the parameter- and parameterless strings inconsistently. <li>change several tputs() calls in scrolling code to use putp(), to enable padding which may be needed for some terminals. <li>improve mvcur() by checking if it is safe to move when video attributes are set (msgr), and if not, reset/restore attributes within that function rather than doing it separately in the GoTo() function in tty_update.c. <li>use tputs() rather than putp() in a few cases in tty_update.c since the corresponding delays are proportional to the number of lines affected: repeat_char, clr_eos, change_scroll_region. </ul> <li>correct line/column reference in adjust_window(), needed to make special windows such as curscr track properly when resizing. <li>fix a potential recursion between napms() and _nc_timed_wait() <li>rewrote lib_insch.c, combining it with lib_insstr.c so both handle tab and other control characters consistently. <li>do not try to open gpm mouse driver if standard output is not a tty; the gpm library does not make this check.</ul>Portability:<ul> <li>configure script: <ul> <li>new options: <dl> <dt>--with-abi-version option. <dd>addresses platforms where packagers have diverged from ncurses ABI numbering. <dt>--with-manpage-format=catonly <dd>addresses behavior of BSDI, allow install of man+cat files on NetBSD, whose behavior has diverged by requiring both to be present. <dt>--with-manpage-aliases <dd>extends "--with-manpage-aliases" to provide the option of generating ".so" files rather than symbolic links for manpage aliases. <dt>--with-rel-version <dd>workaround to force libtool on Darwin generate the "same" library names as with the "--with-shared" option. The Darwin ld program does not work well with a zero as the minor-version value. <dt>--with-trace <dd>simplifies defining TRACE to incorporate trace() in libraries. </dl> <li>fixes/improvements for cross-compiling: <ul> <li>allow BUILD_CC and related configure script variables to be overridden from the environment. <li>use AC_CHECK_TOOL to get proper values for AR and LD for cross compiling. <li>use <code>$cross_compiling</code> variable in configure script rather than comparing <code>$host_alias</code> and <code>$target</code> alias, since "host" is traditionally misused in autoconf to refer to the target platform. <li>modify run_tic.in to avoid using wrong shared libraries when cross-compiling. </ul> <li>fixes for Mac OS X: <ul> <li>fix a redefinition of <code>$RANLIB</code> in the configure script when libtool is used. <li>modify MKlib_gen.sh to avoid passing "#" tokens through the C preprocessor. This works around Mac OS X's preprocessor, which⌨️ 快捷键说明
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