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ncurses: Update to 6.5 and overhaul package.
The first half of this commit message describes the pkgsrc changes, the
second half contains the changes in ncurses 6.5 since 6.4.
This combines ncurses and ncursesw into a single package, and ships
combined versions of libncurses and the ncurses/ include directory.
There are no longer separate versions of libncursesw and ncursesw/.
This aligns with what many other operating systems are doing nowadays,
simplifies the package immensely, provides a consistent interface for
other packages to request curses features, improves performance due to
the removal of questionable code in ncursesw's buildlink3.mk, and fixes
bugs - notably the recent python fallout.
Packages that require wide-curses support can use the standardised
"wide" value for USE_CURSES to ensure they are built against the
wide-curses API, while providing the option for NetBSD's builtin curses
to handle that instead, should support be added in the future.
When opting into the wide-curses API, the NCURSES_WIDECHAR define is
used instead of _XOPEN_SOURCE_EXTENDED as the latter cannot be used on
certain operating systems.
A number of other cleanups are included:
- stop using a custom TERMINFODIR on SunOS
- remove unused PLIST_SUBST
- print-PLIST fixes
- use newer make syntax
- pkglint cleanups
This package now conflicts with and supersedes ncursesw-[0-9]*. Removal
of support for devel/ncursesw will come next.
Release Notes
These notes are for ncurses 6.5, released April 27, 2024.
This release is designed to be source-compatible with ncurses 5.0
through 6.4; providing extensions to the application binary interface
(ABI). Although the source can still be configured to support the
ncurses 5 ABI, the reason for the release is to reflect improvements
to the ncurses 6 ABI and the supporting utility programs.
There are, of course, numerous other improvements, listed in this
announcement.
The most important bug-fixes/improvements dealt with robustness
issues. The release notes also mention some other bug-fixes, but are
focused on new features and improvements to existing features since
ncurses 6.4 release.
Library improvements
New features
These are new features:
* The low-level terminfo and termcap interfaces are used both by the
higher-level curses library, as well as by many applications.
The functions which convert parameterized terminal capability
strings for output to the terminal (tiparm and tparm) analyze the
capability string to determine which parameters are strings (i.e.,
addresses), versus numbers (not addresses).
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 all implementations of terminfo, dating from the
early 1980s.
Two new functions address this problem: by providing a function
which allows the calling application to tell ncurses how many
string-parameters to expect:
+ tiscan_s helps applications check formatting capabilities
that would be passed to tiparm_s.
+ tiparm_s provides applications a way to tell ncurses what the
expected parameters are for a capability.
* The ncurses library supports a compile-time feature (enabled with
the configure --enable-check-size option) which simplifies
initialization with terminals which do not negotiate window
(screen) size. This is done in setupterm, 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.
The ncurses test-program with options "-E -T" demonstrates this
feature.
* add functions to query tty-flags in SCREEN
This release drops compatibility with obsolete versions of tack, e.g.,
pre-1.08
Other improvements
These are improvements to existing features:
* In addition to the new, safer function tiparm_s, ncurses adds
checks to make the older tiparm, tparm and tgoto functions safer:
+ the terminfo functions tiparm and tparm ensure that the
capability string comes from the terminal description which
ncurses loads, rather than from random data which the
application happens to have.
+ the tgoto function disallows capabilities which its analysis
shows will attempt to use string parameters.
+ ncurses uses internal functions which correspond to tiparm,
and tgoto which ensure that the capability strings which are
passed to these functions come from the loaded terminal
description.
* improve check in lib_tparm.c, ensuring that a char* fits into a
TPARM_ARG
* modify _nc_syserr_abort to use _nc_env_access, rather than only
checking root uid
* improve thread lock in lib_trace.c
* modify flushinp to use file descriptors in SCREEN, rather than
from TERMINAL, and check if they are for a terminal, like SVr4
* modify mcprint to use file descriptor in SCREEN, for consistency
* modify internal function _nc_read_file_entry to show relevant
filename in warnings
* improve checks in internal function convert_string for corrupt
terminfo entry
* review/improve handling of out-of-memory conditions
* limit delays to 30 seconds, i.e., padding delays in terminfo, as
well as napms and delay_output functions
* fix reallocation loop for vsnprintf in _nc_sprintf_string by
copying the va_list variable
* modify delscreen to limit the windows which it creates to just
those associated with the screen
* modify endwin to return an error if it is called again without an
intervening screen update
* modify wenclose to handle pads
* eliminate use of PATH_MAX in lib_trace.c
* provide for any CCHARW_MAX greater than 1
These are corrections to existing features:
* correct loop termination condition in waddnstr and waddnwstr
* improve parsing in internal function _nc_msec_cost, allowing a
single decimal point
* amend parameter check for entire string versus specific length in
winsnstr and wins_nwstr to match Solaris; make similar correction
to wins_nwstr
* correct internal function wadd_wch_literal when adding a
non-spacing character to a double-width character
* correct definition of Charable macro for non-wide ncurses library
.
Program improvements
Several improvements were made to the utility programs. Some were done
to make the infocmp option "-u" option help refactor the terminal
database.
infocmp
+ add limit checks for processing extended capabilities with
the "-u" option
+ correct initial alignment of extended capabilities, so that
the "-u" option can be used for more than two terminal types
+ modify "-u" option to not report cancels for strings which
were already cancelled in a use'd chunk.
+ correct an assignment "-u" for detecting if a boolean is
unset in a base entry and set in a use'd chunk, i.e., if it
was cancelled.
tic
+ correct limit-check when dumping tc/use clause via "-I"
+ check return value of _nc_save_str, in special case where
extended capabilities are processed but the terminal
description was not initialized
+ modify check for multiply defined aliases to report problems
within the current runtime rather than for conflicts with
pre-existing terminal descriptions.
+ disallow using $TERMINFO or $HOME/.terminfo when "-o" option
is used
tput and tset
+ add "-v" option to tput, to show warnings
+ modify reset command to avoid altering clocal if the terminal
uses a modem
+ modify reset feature to avoid 1-second sleep if running in a
pseudo-terminal
Examples
Along with the library and utilities, improvements were made to the
ncurses-examples:
* modify test_tparm to account for extended capabilities
* corrected mouse mask in test/testcurs.c
* modify test/clip_printw.c to optionally test non-wrapped updates
* modify test/test_mouse.c to use curses api for raw/noraw
* modify test/clip_printw.c to optionally test non-wrapped updates
There is one new demo/test programs:
test/test_endwin.c
This program shows the return-status from endwin with different
combinations of endwin (repeated), initscr, newterm.
Terminal database
There are several new terminal descriptions:
* ansi+apparrows
* contour
* linux+kbs for terminals which imitate xterm's behavior with Linux
* rio, rio-direct
* mostlike
* ms-vt100-16color, winconsole
* vt100+noapp, vt100+noapp+pc, xterm+app+pc, xterm+decedit from
xterm #389
* putty+cursor to reflect amending of modified cursor-keys in 2021
* wezterm
There are many changes to existing terminal descriptions. Some were
updates to several descriptions, using the infocmp "-u" option in a
script to determine which building-block entries could be used to
replace multiple capability settings (and trim redundant information).
Other changes include:
* document XF, kxIN and kxOUT
* add note on sun regarding wscons/cmdtool/shelltool
* remove DECCOLM+DECSCLM from foot
* add xterm+focus to foot+base
* add ecma+strikeout to putty
* use CSI 3J in vte-2017
* use oldxterm+sm+1006 in vte-2014
* modify xgterm to work around line-drawing bug
* add xterm focus mode 1004 to xterm+focus as fe/fd capabilities,
like vim.
* add xterm+focus to alacritty+common
* add XR/xr, to work with vim, and use RV/rv to denote DA2 and its
response
* add XF flag to xterm+focus so that termcap applications can be
aware of terminals which may support focus in/out
* use xterm+focus in xterm-p370 and tmux
* remove xterm+sm+1006 from tmux
* NetBSD-related fixes for x68k and wsvt25
Documentation
As usual, this release
* improves documentation by describing new features,
* attempts to improve the description of features which users have
found confusing
* fills in overlooked descriptions of features which were described
in the NEWS file but treated sketchily in manual pages.
In addition to providing background information to explain these
features and show how they evolved, there are corrections,
clarifications, etc.:
* Corrections:
+ add assignment in CF_MAN_PAGES to fill in value for
TERMINFO_DIRS in ncurses, terminfo and tic manpages.
+ clarify interaction of -R option versus -C, -I and -r in
infocmp manpage.
+ correct manpage description of panel_hidden.
+ improve manpage description for addch versus unctrl format
used for non-printable characters.
+ improve manpages discussing file descriptors in low-level
functions.
+ improve description of search rules for terminal descriptions
in terminfo manpage.
+ modify dist.mk to avoid passing developer's comments in
manpages into the generated html documentation.
+ 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.
* New/improved history and portability sections:
+ add information about "ttycap", termcap's forerunner, to
tset.1
+ document limitations of tparm, and error-returns in
curs_terminfo.3x
+ document limitations of tgoto, and error-returns in
curs_termcap.3x
* Other improvements:
+ This release has many changes to improve the formatting and
style of the manpages.
+ Manpages now use consistent section-naming, page headers and
footers (including the modification date for each page).
+ Table layout has been revised.
There are no new manual pages (all of the manual page updates are to
existing pages).
Interesting bug-fixes
The changes to tparm, tgoto which improve the design of the low-level
interfaces are interesting, but are not bug-fixes per se.
Configuration changes
Major changes
These are the major changes (aside from introducing tiparm_s):
* use wide-character (ncursesw) by default
* use opaque typedefs by default
However, most of the work on configure scripts was done to reduce
warnings within the configure script:
* intrusive warnings from GNU grep regarding fgrep and egrep
* fatal errors in compile-checks, arising from recent "Modern C"
efforts by some developers which caused longstanding configure
checks to fail.
After repairing the configure script, none of that activity
affected ncurses because stricter warnings are used routinely in
development.
Other improvements made to configure checks include
* use string-hacks in alloc_entry.c, alloc_type.c and hardscroll.c,
overlooked due to compiler changes in recent OpenBSD releases
* revise progs.priv.h to provide for NC_ISATTY reuse
* configure check for MB_LEN_MAX provides warning as needed
* trim a space after some "-R" options, fixing builds for
applications built using clang and ncurses on Solaris
* work around misconfiguration of MacPorts gcc13, which exposes
invalid definition of MB_LEN_MAX in gcc's fallback copy of
limits.h
* modified experimental Windows driver works with xterm mouse
protocol
Configuration options
There are a few new configure options:
--disable-setuid-environ
Compile with environment restriction, so certain environment
variables are not available when running via a setuid/setgid
application. These are (for example $TERMINFO) those that allow
the search path for the terminfo or termcap entry to be
customized.
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.
--enable-check-size
Compile-in feature to detect screensize for terminals which do
not advertise their screensize, e.g., serial terminals.
--with-abi-altered=NUM
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.
--with-strip-program=XXX
When stripping executables during install, use the specified
program rather than "strip" overriding program chosen by the
install program for stripping executables.
These configure options are modified:
--with-pkg-config-libdir[=DIR]
The optional DIR parameter can now be "auto" to automatically
use pkg-config's library directory.
The default is $(libdir).
--with-xterm-kbs[=XXX]
The default is "auto" which tells the configure script to
choose BS or DEL according to platform defaults.
Portability
Many of the portability changes are implemented via the configure
script:
* add/use configure check for clock_gettime, to supersede
gettimeofday.
* 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
* allow for MinGW32-/64-bit configurations to use _DEFAULT_SOURCE
* modify CF_XOPEN_SOURCE macro's amend default case to avoid
undefining _XOPEN_SOURCE if _POSIX_C_SOURCE is defined
* updated configure script macro CF_XOPEN_SOURCE, for uClibc-ng
* modify version-check for gcc/g++, now works for msys2
* build-fixes related to configure-options and/or platform:
+ fix for --enable-fvisibility
+ fix for unusual values of --with-rel-version
+ fix for unusual values of --with-abi-version
+ fix for --disable-tcap-names
+ fix for termcap in nc_access.h
* other configure-script improvements:
+ recent msys2 headers work with _DEFAULT_SOURCE; amend check
+ use $ac_includes_default in most cases where stdlib.h should
work
+ use #error consistently vs "make an error"
+ add configure macro for gettimeofday vs inline check
Here are some of the other portability fixes:
* modify configure scripts/makefiles to omit KEY_RESIZE if the
corresponding SIGWINCH feature is disabled
* increase MB_CUR_MAX to 16, matching glibc's MB_LEN_MAX
* add BSD erase2 to characters handled by tset/reset
* use getauxval when available, to improve setuid/setgid checks
* set dwShareMode in calls to CreateConsoleScreenBuffer
* use CreateFile with "CONIN$", "CONOUT$" rather than GetStdHandle
to obtain a handle on the actual console, avoiding redirection in
the MinGW/Win32 configurations
* modify MinGW driver to return KEY_BACKSPACE when an unmodified
VK_BACK virtual key is entered
* modify MinGW configuration to provide for running in MSYS/MSYS2
shells, assuming ConPTY support- Loading branch information
