+-------------------------------------------------------------------------------
+-- Copyright (c) 1998-2010,2011 Free Software Foundation, Inc. --
+-- --
+-- Permission is hereby granted, free of charge, to any person obtaining a --
+-- copy of this software and associated documentation files (the --
+-- "Software"), to deal in the Software without restriction, including --
+-- without limitation the rights to use, copy, modify, merge, publish, --
+-- distribute, distribute with modifications, sublicense, and/or sell copies --
+-- of the Software, and to permit persons to whom the Software is furnished --
+-- to do so, subject to the following conditions: --
+-- --
+-- The above copyright notice and this permission notice shall be included --
+-- in all copies or substantial portions of the Software. --
+-- --
+-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS --
+-- OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF --
+-- MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN --
+-- NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, --
+-- DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR --
+-- OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE --
+-- USE OR OTHER DEALINGS IN THE SOFTWARE. --
+-- --
+-- Except as contained in this notice, the name(s) of the above copyright --
+-- holders shall not be used in advertising or otherwise to promote the --
+-- sale, use or other dealings in this Software without prior written --
+-- authorization. --
+-------------------------------------------------------------------------------
+-- $Id: TO-DO,v 1.57 2011/03/28 00:23:02 tom Exp $
+-------------------------------------------------------------------------------
+
SHORT-TERM TO-DO ITEMS:
Known Problems:
-* The screen optimization has been tested only in an ad hoc manner. We should
++ libtool does not work with GNAT.
+
++ The screen optimization has been tested only in an ad hoc manner. We should
develop a good set of regression tests to cover lib_doupdate.c and
lib_mvcur.c.
-* Ncurses cursor movement does not make effective use of hard tabs, as SVr4
- does.
-
-* Scrolling optimization has holes: for example, the ncurses 'p' test, which
- exercises scrolling in a pad does not (1996/12/24) use scrolling regions.
- Also, running other tests shows that scrolling optimization forces repaints
- of the screen between calls to refresh().
-
-* The stacking order of windows on the screen does not match that implemented
- in SVr4 (e.g., Solaris curses). XSI doesn't specify a stacking order, so
- full compatibility for this behavior must be achieved by testing/analysis.
++ Magic cookie support (for nonzero xmc values) does not work, since the logic
+ does not take into account refresh. Also, the initial optimize does not
+ adjust the current location when a cookie is emitted.
-* The ncurses 'o' test does not behave the same on SVr4 (Solaris) as with
- ncurses (the latter pops windows up more). The former also produces 20%
- fewer characters in a 'script' output. Further analysis is needed.
++ Scrolling optimization has holes: for example, it forces repaints of the
+ screen between calls to refresh().
-* SVr4 uses slightly different rules for determining when softkeys are shown.
++ SVr4 uses slightly different rules for determining when softkeys are shown.
For example, they are initially displayed (before the ncurses 'e' test
activates them), and a touchwin can apparently also force them to be
displayed.
-* The code departs from perfect 8-bit cleanness in one respect; you cannot
- specify a character \200 as part of a capability string, because the terminfo
- library interprets \200 as a request to embed NUL (\000) at that point (the
- actual code that does this is in ncurses/lib_options.c:add_keytry().
- This is a legacy terminfo property we can't mess with.
++ The code departs from perfect 8-bit cleanness in one respect; you cannot
+ specify a character \200 as part of a capability string, because the
+ terminfo library interprets \200 as a request to embed NUL (\000) at that
+ point. This is a legacy terminfo property we can't mess with.
+
++ The window classes defined in the c++ subdirectory need documentation. Some
+ C++ programmer could earn a lot of good karma by doing this...
+
++ vid_attr() should support the set_a_attributes (sgr1) string, but does not.
+ There appear to be no terminals that require that functionality.
+
++ the configure --disable-ext-funcs option does not work for Ada95 tree.
+
++ the --with-pthread configuration builds for Cygwin, but does not work
+ properly (test/worm.c shows all of the worms in the same location).
-* Recognition of xterm mouse reports is implemented by setting the kmous
- capability to the mouse-report prefix. As a result, the kmous sequence is
- eaten even when mouse recognition is disabled. This could be fixed if
- necessary with special code that pokes the kmous value back into the
- input FIFO when KEY_MOUSE is seen and the mousemask is zero, but that would
- be kind of ugly.
++ the --enable-rpath configure option builds for the corresponding platforms;
+ however combining it with --with-ticlib and --with-termlib does not always
+ produce libraries that can be run without setting environment variables.
+ Building those with libtool does not work either. (This is a problem with
+ the BSD platforms).
-* The window classes defined in the c++ subdirectory need documentation.
- Some C++ programmer could earn a lot of good karma by doing this...
++ more work is needed to make the MinGW port support ordinary terminals.
Portability (or lack thereof):
-* Users of older System V UNIXes (but not Solaris, and probably not SVr4)
- may trip over a known problem with the signal-handling code which causes
- abrupt termination of ncurses applications following resume from a ^Z
- suspend (this problem was first seen running lynx). You will not see
- this problem if you are running Linux or one of the 4.4BSD derivatives
- like FreeBSD, NetBSD, or BSDI. For details, see the analysis in the
- header comment of ncurses/lib_tstp.c.
-
-* In theory, vwprintw and vwscanf are supposed to use the older varargs.h
- interface for handling variadic argument lists. Linux doesn't have
- varargs.h, it has the newer X/Open-standard stdargs.h equivalent. So
- these functions use stdargs instead. This is unlikely to be a problem
- unless you're building ncurses on a System V old enough to only have
- varargs.h.
-
-* If you're using a BSD earlier than 4.4BSD, or a Linux old enough not to
- have a native vsscanf(3) in its library, vwscanw() will not work. You lose.
- (It should work on any System V, however). If you want to fix this, add
- an implementation to ncurses/vsscanf.c.
-
-* The demo build for the c++ library craps out with many link errors under gcc
- 2.6.3. We're told the C++ support in 2.6.3 is broken and that the right
- fix is to upgrade to 2.7.0.
-
-* Under Ultrix, configure craps out (Ultrix sh is lame). Run it under ksh.
-
-* We've not tested the configure script with cross-compilers. The autoconf
- tests are supposed to be able to support this (please report bugs). You will
- have to configure and build in two steps. The first step must create the
- automatically-generated sources (e.g., comp_captab.c) on your host machine.
- Then, run "make mostlyclean", remove config.* from the top-level directory
- and configure for the cross-compiler.
++ Users of older System V UNIXes (but not Solaris, and probably not SVr4) may
+ trip over a known problem with the signal-handling code which causes abrupt
+ termination of ncurses applications following resume from a ^Z suspend (this
+ problem was first seen running lynx). You will not see this problem if you
+ are using one of the 4.4BSD derivatives like such as, NetBSD, or BSDI, or
+ systems using that convention. For details, see the analysis in the header
+ comment of ncurses/tty/lib_tstp.c .
-Untested features:
++ In theory, vwprintw and vwscanf are supposed to use the older varargs.h
+ interface for handling variadic argument lists (and are deprecated by X/Open
+ for that reason). Many newer systems do no have varargs.h, instead they have
+ only the newer X/Open-standard stdargs.h equivalent. So these functions use
+ stdargs instead. This is unlikely to be a problem unless you're building
+ ncurses on a System V old enough to only have varargs.h. (Solaris 2.5.1 used
+ the stdarg.h binding as well).
+
++ If you're using a system old enough not to have a native vsscanf(3) in its
+ library, vwscanw() will not work. If you want to fix this, add an
+ implementation to ncurses/vsscanf.c.
-* The rep optimization in lib_doupdate.c is not yet thoroughly tested.
++ The C++ binding fails to build with a few C++ compilers.
-* The code for the HP color model using set_color_pair is untested.
++ terminfo.5 does not format with the SunOS (and most other platform's) tbl
+ utility because it relies on a diversion for each table entry. Get the
+ groff package.
+
+Untested features:
-* The code for handling soft labels on a terminal type with built-in support
++ The code for the HP color model using set_color_pair is untested.
+
++ The code for handling soft labels on a terminal type with built-in support
for them (num_labels > 0, label_height, label_width, label_format, label_off,
label_on, plab_norm, lab_f*) has not been tested. The label_format and
lab_f* capabilities aren't presently used.
1. Extended COSE conformance
-There is an XPG4 standard recently released which describes a superset
+There is an XPG4 standard released in 1996 which describes a superset
of the SVr4 API. The library is BASE conformant with this standard.
We would like to make ncurses fully conformant at the EXTENDED level
supporting internationalization.
-Here are page references to all material involving wide or multi-byte
-characters in Issue 4 of the XSI Curses standard, with notes on their
-status in this implementation:
-
- Page 1 (1.1.2) New Features discussion of internationalization.
- Page 12 (2.4): Definition of cchar_t, wchar_t.
- Page 16 (3.3.2): Introduction of multi-column characters.
- Page 17-18 (3.3.5): Description of non-spacing characters.
- Page 19-21 (3.4.2): Basic character operations.
- Page 34 (addnstr): These should now call underlying wide-
-character functions, and do (through waddnstr) if _XOPEN_SOURCE_EXTENDED is on).
- Page 35 (addnwstr): wide-character add-string functions. All macros
-except waddnwstr() which is not yet defined.
- Page 36 (add_wch): wide-character add-char functions. All macros
-except wadd_wch() which is not yet defined.
- Page 39 (attr_get): implemented -- we've just made the current-
-attributes field of the window an attr_t.
- Page 43 (bkgrnd): None of these are implemented.
- Page 45 (border_set): Neither of these is implemented.
- Page 47 (box_set): box_set implemented as macro, but the underlying
-wborder_set() is not yet defined.
- Page 78 (echo_wchar): echo_wchar() implemented as macro, underlying
-wecho_wchar() not yet implemented.
- Page 81 (erasechar): Neither entry point is implemented.
- Page 87 (getbkgrnd): Not implemented.
- Page 88 (getcchar): Not implemented.
- Page 93 (getn_wstr): All implemented (as macros) except the
-underlying wgetn_wstr().
- Page 97 (get_wch): All implemented (as macros) except the
-underlying wget_wch().
- Page 99 (get_wstr): Xref to page 93.
- Page 105 (hline_set): All implemented (as macros) except the
-underlying whline_set(), wvline_set().
- Page 114 (innstr): Multi-byte character-completeness check is
-not implemented.
- Page 115 (innwstr): All implemented (as macros) except the
-underlying winnw_str().
- Page 119 (insnstr): Implementation may not be correct for multi-byte
-characters.
- Page 120 (ins_nwstr): Not implemented.
- Page 121 (insstr): Xref to page 119.
- Page 122 (instr): Xref to page 119.
- Page 123 (ins_wch): Not implemented.
- Page 124 (ins_wstr): Xref to page 120.
- Page 126 (in_wch): Not implemented.
- Page 127 (in_wchnstr): Not implemented.
- Page 128 (inwstr): Xref to page 115.
- Page 133 (killwchar): killwchar not implemented.
- Page 158 (pechochar): pecho_wchar() not implemented.
- Page 176 (setcchar): Not implemented.
- Page 181 (slk_attroff): slk_wset not implemented.
- Page 200 (ungetch): unget_wch() not implemented.
- Page 203 (vidattr): vid_attr() and vid_puts() not implemented.
- Page 206 (vline_set): Xref to page 105.
- Page 214 (wunctrl): Not implemented.
- Page 216 (curses.h): cchar_t, wint_t, wchar_t references.
- Page 220 (curses.h): KEY_CODE_YES
-
-Basically, the macro superstructure is there but the core is absent. We
-need better multi-locale support guarantees from the OS to finish this.
-If you are working on internationalization support, please contact us so
-we can cooperate.
-
2. DOS port
-Only 16 of the 55 files in the library depend on the terminfo format.
-It should be possible to further kernelize the package, then rewrite
+Only a few of the files in the library depend on the terminfo format.
+It should be possible to further kernelize the package, then rewrite
a small number of core files to produce a functionally-compatible
port that would do updates to a memory-mapped screen area. The first
result of this would be a DOS port.
move_insert, dest_tabs_magic_smso, transparent_underline,
needs_xon_xoff, hard_cursor.
Numerics: lines_of_memory, buttons.
- Strings: pkey_key, pkey_local, pkey_xmit, underline_char,
- enter_xon_mode, exit_xon_mode, xon_character, xoff_character,
+ Strings: pkey_key, pkey_local, pkey_xmit, underline_char,
+ enter_xon_mode, exit_xon_mode, xon_character, xoff_character,
display_clock, remove_clock, user[0-5], display_pc_char,
- enter_scancode_mode, exit_scancode_mode, pc_term_options,
+ enter_scancode_mode, exit_scancode_mode, pc_term_options,
scancode_escape, alt_scancode_esc.
These are the potentially important ones for ncurses. Notes:
ii) We probably don't care about dest_tabs_magic_smso; only
Telerays used it and they're all long obsolete.
-
+-- vile:txtmode
projects / ncurses.git / blobdiff