ncurses 5.7 - patch 20090822

[ncurses.git] / TO-DO

diff --git a/TO-DO b/TO-DO
index 21e8ee0ca9ebd9a719758cdfd6439a2e0be75837..eb25227967083141e21205e31b50db13aa412bcd 100644 (file)
--- a/TO-DO
+++ b/TO-DO
@@ -1,87 +1,129 @@
--- $Id: TO-DO,v 1.39 1998/07/12 00:25:39 tom Exp $
+-------------------------------------------------------------------------------
+-- Copyright (c) 1998-2007,2008 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 1.53 2008/11/28 16:39:12 tom Exp $
+-------------------------------------------------------------------------------

 
 SHORT-TERM TO-DO ITEMS:
 
 Known Problems:
 
 
 SHORT-TERM TO-DO ITEMS:
 
 Known Problems:
 

-* GNAT does not put libraries in the correct order, so a build only links
-  properly if you use shared libraries since -lncurses is first.
++ libtool does not work with GNAT.

 
 

-* XPG4 specifies that the enhanced features are not available unless the
-  _XOPEN_SOURCE_EXTENDED test macro is defined by the application.  Ncurses uses
-  this macro (incorrectly) to address a dependency upon wchar_t.  The functions
-  which use wchar_t are not implemented, so the effect of the test macro is
-  pointless.
-
-* The screen optimization has been tested only in an ad hoc manner.  We should
++ 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.
 
   develop a good set of regression tests to cover lib_doupdate.c and
   lib_mvcur.c.
 

-* Magic cookie support 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.
++ 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.

 
 

-* Scrolling optimization has holes: for example, it forces repaints of the
++ Scrolling optimization has holes:  for example, it forces repaints of the

   screen between calls to refresh().
 
   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
   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.  This
-  is a legacy terminfo property we can't mess with.
+  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).
+
++ the Ada95 tree requires a small fix to build on Cygwin, since the GNAT port
+  to that platform provides an incomplete Interrupts.Names package.  For
+  instance (your gcc version may be different):
+        /usr/lib/gcc/i686-pc-cygwin/3.4.4/adainclude/a-intnam.ads

 
 

-* The window classes defined in the c++ subdirectory need documentation.
-  Some C++ programmer could earn a lot of good karma by doing this...
+  cut here...
+-------------------------------------------------------------------------------
+--- a-intnam.ads.orig   2003-10-21 13:41:51.000000000 +0000
++++ a-intnam.ads        2007-05-05 22:40:02.609375000 +0000
+@@ -44,5 +44,6 @@
+
+    DUMMY_INTERRUPT_1 : constant Interrupt_ID := 1;
+    DUMMY_INTERRUPT_2 : constant Interrupt_ID := 2;
++   SIGINT : constant Interrupt_ID := 2;
+
+ end Ada.Interrupts.Names;
+-------------------------------------------------------------------------------
+
++ 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).

 
 Portability (or lack thereof):
 
 
 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.  (Solaris 2.5.1 uses the stdarg.h binding as well).
-
-* 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.  This demo is also known to not build with
-  the Sun SPARCworks 4.1 C++ compiler, due to a problem resolving templates.
-
-* 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 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/tty/lib_tstp.c .
+
++ 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).  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.  (Solaris 2.5.1 used the
+  stdarg.h binding as well).
+
++ 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 C++ binding fails to build with a few C++ compilers.

 
 + terminfo.5 does not format with the SunOS (and most other platform's) tbl
 
 + 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.
+  utility because it relies on a diversion for each table entry.  Get the
+  groff package.

 
 Untested features:
 
 
 Untested features:
 

-* The code for the HP color model using set_color_pair is untested.
++ 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
++ 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.
   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.


@@ -90,78 +132,15 @@ LONGER-TERM TO-DO ITEMS:
 
 1. Extended COSE conformance
 
 
 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.
 
 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
 
 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.
 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.


@@ -234,10 +213,10 @@ F. Unused VDT capabilities:
                move_insert, dest_tabs_magic_smso, transparent_underline,
                needs_xon_xoff, hard_cursor.
        Numerics: lines_of_memory, buttons.
                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,
                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:
                scancode_escape, alt_scancode_esc.
 
 These are the potentially important ones for ncurses.  Notes:


@@ -248,4 +227,4 @@ 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.
 
        ii) We probably don't care about dest_tabs_magic_smso; only
                Telerays used it and they're all long obsolete.
 

-
+-- vile:txtmode