- * modified infocmp -e, -E options to ensure that generated
- fallback.c type for Booleans agrees with term.h
- * documented a special case of incompatiblity between ncurses 4.2
- and 5.0, added a section for this in INSTALL.
- * corrected tests for file-descriptors in OS/2 EMX mouse support. A
- negative value could be used by FD_SET, causing the select() call
- to wait indefinitely.
- * made 'tput flash' work properly for xterm by flushing output in
- delay_output() when using napms(), and modifying xterm's terminfo
- to specify no padding character. Otherwise, xterm's reported baud
- rate could mislead ncurses into producing too few padding
- characters.
- * modified lib_addch.c to allow repeated update to the lower-right
- corner, rather than displaying only the first character written
- until the cursor is moved. Recent versions of SVr4 curses can
- update the lower-right corner, and behave this way.
- * modified echo() behavior of getch() to match Solaris curses for
- carriage return and backspace (reported by Neil Zanella).
- * corrected offsets used for subwindows in wresize()
- * modified configure script so AC_MSG_ERROR is temporarily defined
- to a warning in AC_PROG_CXX to make it recover from a missing C++
- compiler without requiring user to add --without-cxx option
- * corrected logic in lib_twait.c as used by lib_mouse.c for GPM
- mouse support when poll() is used rather than select().
- * made several fixes for buffer overflows, unchecked recursion,
- improvements in performance, etc. See the NEWS file for details.
+ * correct manlinks.sed script introduced in ncurses 5.1 to avoid
+ using ERE "\+", which is not understood by standard versions of
+ sed. This happens to work with GNU sed, but is not portable, and
+ was the initial motivation for this release.
+ * remove "hpux10.*" case from CF_SHARED_OPTS configure script macro.
+ This differed from the "hpux*" case by using reversed symbolic
+ links, which made the 5.1 version not match the configuration of
+ 5.0 shared libraries.
+ * guard against corrupt terminfo data:
+ + modify tparm() to disallow arithmetic on strings, analyze the
+ varargs list to read strings as strings and numbers as
+ numbers.
+ + modify tparm()'s internal function spop() to treat a null
+ pointer as an empty string.
+ + modify parse_format() in lib_tparm.c to ignore precision if
+ it is longer than 10000.
+ + rewrote limit checks in lib_mvcur.c using new functions
+ _nc_safe_strcat(), etc. Made other related changes to check
+ lengths used for strcat() and strcpy().
+ * corrections to screen optimization:
+ + added special case in lib_vidattr.c to reset underline and
+ standout for devices that have no sgr0 defined.
+ + change handling of non_dest_scroll_region in tty_update.c to
+ clear text after it is shifted in rather than before shifting
+ out. Also correct row computation.
+ + modify rs2 capability in xterm-r6 and similar entries where
+ cursor save/restore bracketed the sequence for resetting
+ video attributes. The cursor restore would undo that.
+ * UTF-8 support:
+ + when checking LC_ALL, LC_CTYPE, and LANG environment
+ variables for UTF-8 locale, ignore those which are set to an
+ empty value, as per SUSV2.
+ + encode 0xFFFD in UTF-8 with 3 bytes, not 2.
+ + modify _nc_utf8_outch() to avoid sign-extension when checking
+ for out-of-range value.
+ * other library fixes:
+ + added checks for an empty $HOME environment variable, to
+ avoid retrieving terminfo descriptions from ./.terminfo .
+ + change functions _nc_parse_entry() and postprocess_termcap()
+ to avoid using strtok(), because it is non-reentrant.
+ + initialize fds[] array to 0's in _nc_timed_wait(); apparently
+ poll() only sets the revents members of that array when there
+ is activity corresponding to the related file.
+ + add a check for null pointer in Make_Enum_Type().
+ + fix a heap problem with the c++ binding.
+ + correct missing includes for <string.h> in several places,
+ including the C++ binding. This is not noted by gcc unless we
+ use the -fno-builtin option.
+ * several fixes for tic:
+ + add a check for empty buffers returned by fgets() in
+ comp_scan.c next_char() function, in case tic is run on a
+ non-text file (fixes a core dump).
+ + modify tic to verify that its inputs are really files, in
+ case someone tries to read a directory (or /dev/zero).
+ + correct an uninitialized parameter to open_tempfile() in
+ tic.c which made "tic -I" give an ambiguous error message
+ about tmpnam.
+ + correct logic in adjust_cancels(), which did not check both
+ alternatives when reclassifying an extended name between
+ boolean, number and string, causing an infinite loop in tic.
+ * using new checks in tic for parameter counts in capability
+ strings, found/fixed several errors both in the terminfo database
+ and in the include/Caps file.
+ + modified several terminfo capability strings, including the
+ definitions for setaf, setab, in include/Caps to indicate
+ that the entries are parameterized. This information is used
+ to tell which strings are translated when converting to
+ termcap. This fixes a problem where the generated termcap
+ would contain a spurious "%p1" for the terminfo "%p1%d".
+ + correct parameter counts in include/Caps for dclk as well as
+ some printer-specific capabilities: csnm, defc, scs, scsd,
+ smgtp, smglp.
+ * various fixes for install scripts used to support configure
+ --srcdir and --with-install-prefix.
+ * correct several mismatches between manpage filename and ".TH"
+ directives, renaming dft_fgbg.3x to default_colors.3x and
+ menu_attribs.3x to menu_attributes.3x.
+
+ Portability:
+ * configure script:
+ + newer config.guess, config.sub, including changes to support
+ OS/2 EMX. The configure script for OS/2 EMX still relies on a
+ patch since there is no (working) support for that platform
+ in the main autoconf distribution.
+ + make configure script checks on variables $GCC and $GXX
+ consistently compare against 'yes' rather than test if they
+ are nonnull, since either may be set to the corresponding
+ name of the C or C++ compiler.
+ + change configure script to use AC_CANONICAL_SYSTEM rather
+ than AC_CANONICAL_HOST, which means that configure --target
+ will set a default program-prefix.
+ + modify the check for big-core to force a couple of memory
+ accesses, which may work as needed for older/less-capable
+ machines (if not, there's still the explicit configure
+ option).
+ + modify configure test for tcgetattr() to allow for old
+ implementations, e.g., on BeOS, which only defined it as a
+ macro.
+ + add configure check for filesystems (such as OS/2 EMX) which
+ do not distinguish between upper/lowercase filenames, use
+ this to fix tags rules in makefiles.
+ + add MKncurses_def.sh to generate fallback definitions for
+ ncurses_cfg.h, to quiet gcc -Wundef warnings, modified
+ ifdef's in code to consistently use "#if" rather than
+ "#ifdef".
+ + change most remaining unquoted parameters of test in
+ configure script to use quotes, for instance fixing a problem
+ in the --disable-database option.
+ + modify scripts so that "make install.data" works on OS/2 EMX.
+ + modify scripts and makefiles so the Ada95 directory builds on
+ OS/2 EMX.
+ * library:
+ + replaced case-statement in _nc_tracebits() for CSIZE with a
+ table to simplify working around implementations that define
+ random combinations of the related macros to zero.
+ + improved OS/2 mouse support by retrying as a 2-button mouse
+ if code fails to set up a 3-button mouse.
+ + added private entrypoint _nc_basename(), used to consolidate
+ related code in progs, as well as accommodating OS/2 EMX
+ pathnames.
+ + alter definition of NCURSES_CONST to make it non-empty.
+ + redefine 'TEXT' in menu.h for AMIGA, since it is reported to
+ have an (unspecified) symbol conflict.
+ * programs:
+ + modified progs/tset.c and tack/sysdep.c to build with sgttyb
+ interface if neither termio or termios is available. Tested
+ this with FreeBSD 2.1.5 (which does have termios - but the
+ sgttyb does work).