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Diffstat (limited to 'contrib/ncurses/TO-DO')
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diff --git a/contrib/ncurses/TO-DO b/contrib/ncurses/TO-DO deleted file mode 100644 index 22acd0f..0000000 --- a/contrib/ncurses/TO-DO +++ /dev/null @@ -1,201 +0,0 @@ -------------------------------------------------------------------------------- --- Copyright (c) 1998-2006,2007 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 1.49 2007/02/03 16:29:17 tom Exp $ -------------------------------------------------------------------------------- - -SHORT-TERM TO-DO ITEMS: - -Known Problems: - -+ 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. - -+ 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 - screen between calls to refresh(). - -+ 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. 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. - -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/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 - utility because it relies on a diversion for each table entry. Get the - groff package. - -Untested features: - -+ 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. - -LONGER-TERM TO-DO ITEMS: - -1. Extended COSE conformance - -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. - -2. DOS port - -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. - -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. The challenge is to handle resize events -properly. - -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. - --- vile:txtmode |
