SHORT-TERM TO-DO ITEMS:

Bugs:

* There is a known problem with the signal-handling code which may result
  in abrupt termination of ncurses applications following resume from a ^Z
  suspend (this problem was first seen in lynx).  You will not see this problem
  if you are running Linux or one of the 4.4BSD derivatives like FreeBSD,
  NetBSD, or BSDI.  You may see it under System Vs.  For details, see the
  analysis in ncurses/lib_tstp.c.

Tweaks:

* Ian Jackson reported on the Debian list that the update code seems to be
  using many  delete-character sequences to avoid a few character overwrites.
  This probably reflects poor cost computation in doupdate().

* A hook for resizing (Thomas Dickey is working on this).

Untested features:

* 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.

LONGER-TERM TO-DO ITEMS:

1. Extended COSE conformance

There is an XPG4 standard recently released 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 characts.
	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 XPG4_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 
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.

3. X port

It would be nice if ncurses could recognize when it was running under X and
maintain its own window.  With this feature, all ncurses programs would
automatically become X programs.

4. Unused capabilities

The currently unused capabilities fall naturally into several groups:

A. Status-line capabilities:

	Booleans: has_status_line, status_line_esc_ok.
	Numerics: width_status_line.
	Strings: dis_status_line, from_status_line, to_status_line.

System V Release 1 curses made no use of these at all.  SVr4's use, if
any, is unknown.  From the AT&T termcap file it looks like curses, in general,
shouldn't use them; terminal variants with status lines have their line count
decremented by 1, suggesting that curses is supposed to leave the status line
alone.

B. Printer capabilities:

	Boolean: col_addr_glitch, cr_cancels_micro_mode, has_print_wheel,
		row_addr_glitch, semi_auto_right_margin, cpi_changes_res,
		lpi_changes_res.
	Numeric: buffer_capacity, dot_horz_spacing, dot_vert_spacing,
		max_micro_address, max_micro_jump, micro_col_size,
		micro_line_size, number_of_pins, output_res_char,
		output_res_line, output_res_horz_inch, print_rate,
		wide_char_size, bit_image_entwining, bit_image_type.
	String: down_half_line, form_feed, up_half_line, set_left_margin,
		set_right_margin, clear_margins, change_char_pitch
		... set_page_length (all the SVr4 printer caps),

Curses doesn't use these.

C. Printer-control capabilities:

	Boolean: prtr_silent.
	Strings: print_screen, prtr_on, prtr_off, prtr_non.

Curses doesn't use these.

D. Dialer strings:

	Strings: hangup, dial_phone, quick_dial, tone, pulse, flash_hook,
		fixed_pause, wait_tone.

Curses doesn't use these.

E. Window and virtual-terminal capabilities:

	Numerics: maximum_windows, virtual_terminal.
	Strings: req_for_input, create_window, goto_window, set_window.

These seem to be fossils from some AT&T experiments on character-based
window systems that never escaped the lab.  The virtual_terminal cap had
something to do with building terminal emulations into tty line disciplines.

F. Unused VDT capabilities:

	Booleans: erase_overstrike, has_meta_key, insert_null_glitch,
		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, 
		display_clock, remove_clock, user[0-5], display_pc_char,
		enter_scancode_mode, exit_scancode_mode, pc_term_options, 
		scancode_escape, alt_scancode_esc.

These are the potentially important ones for ncurses.  Notes:

	i) ncurses doesn't need move_insert; it never uses cup/hpa/vpa while
		insert_mode is on.

	ii) We probably don't care about dest_tabs_magic_smso; only
		Telerays used it and they're all long obsolete.


