Add APIC_ID to extract apic id from local apic id field
[dragonfly.git] / contrib / ncurses / TO-DO
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27-------------------------------------------------------------------------------
28-- $Id: TO-DO,v 1.51 2008/10/11 19:22:27 tom Exp $
29-------------------------------------------------------------------------------
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30
31SHORT-TERM TO-DO ITEMS:
32
33Known Problems:
34
1d102085 35+ libtool does not work with GNAT.
84b24e83 36
1d102085 37+ The screen optimization has been tested only in an ad hoc manner. We should
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38 develop a good set of regression tests to cover lib_doupdate.c and
39 lib_mvcur.c.
40
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41+ Magic cookie support (for nonzero xmc values) does not work, since the logic
42 does not take into account refresh. Also, the initial optimize does not
43 adjust the current location when a cookie is emitted.
84b24e83 44
1d102085 45+ Scrolling optimization has holes: for example, it forces repaints of the
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46 screen between calls to refresh().
47
1d102085 48+ SVr4 uses slightly different rules for determining when softkeys are shown.
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49 For example, they are initially displayed (before the ncurses 'e' test
50 activates them), and a touchwin can apparently also force them to be
51 displayed.
52
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53+ The code departs from perfect 8-bit cleanness in one respect; you cannot
54 specify a character \200 as part of a capability string, because the
55 terminfo library interprets \200 as a request to embed NUL (\000) at that
56 point. This is a legacy terminfo property we can't mess with.
57
58+ The window classes defined in the c++ subdirectory need documentation. Some
59 C++ programmer could earn a lot of good karma by doing this...
84b24e83 60
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61+ vid_attr() should support the set_a_attributes (sgr1) string, but does not.
62 There appear to be no terminals that require that functionality.
84b24e83 63
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64+ the configure --disable-ext-funcs option does not work for Ada95 tree.
65
66+ the --with-pthread configuration builds for Cygwin, but does not work
67 properly (test/worm.c shows all of the worms in the same location).
68
69+ the --enable-rpath configure option builds for the corresponding platforms;
70 however combining it with --with-ticlib and --with-termlib does not always
71 produce libraries that can be run without setting environment variables.
72 Building those with libtool does not work either. (This is a problem with
73 the BSD platforms).
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74
75Portability (or lack thereof):
76
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77+ Users of older System V UNIXes (but not Solaris, and probably not SVr4) may
78 trip over a known problem with the signal-handling code which causes abrupt
79 termination of ncurses applications following resume from a ^Z suspend (this
80 problem was first seen running lynx). You will not see this problem if you
81 are running Linux or one of the 4.4BSD derivatives like FreeBSD, NetBSD, or
82 BSDI. For details, see the analysis in the header comment of
83 ncurses/tty/lib_tstp.c .
84
85+ In theory, vwprintw and vwscanf are supposed to use the older varargs.h
86 interface for handling variadic argument lists (and are deprecated by X/Open
87 for that reason). Linux doesn't have varargs.h, it has the newer
88 X/Open-standard stdargs.h equivalent. So these functions use stdargs
89 instead. This is unlikely to be a problem unless you're building ncurses on
90 a System V old enough to only have varargs.h. (Solaris 2.5.1 used the
91 stdarg.h binding as well).
92
93+ If you're using a BSD earlier than 4.4BSD, or a Linux old enough not to have
94 a native vsscanf(3) in its library, vwscanw() will not work. You lose. (It
95 should work on any System V, however). If you want to fix this, add an
96 implementation to ncurses/vsscanf.c.
97
98+ The C++ binding fails to build with a few C++ compilers.
99
100+ terminfo.5 does not format with the SunOS (and most other platform's) tbl
101 utility because it relies on a diversion for each table entry. Get the
102 groff package.
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103
104Untested features:
105
1d102085 106+ The code for the HP color model using set_color_pair is untested.
84b24e83 107
1d102085 108+ The code for handling soft labels on a terminal type with built-in support
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109 for them (num_labels > 0, label_height, label_width, label_format, label_off,
110 label_on, plab_norm, lab_f*) has not been tested. The label_format and
111 lab_f* capabilities aren't presently used.
112
113LONGER-TERM TO-DO ITEMS:
114
1151. Extended COSE conformance
116
1d102085 117There is an XPG4 standard released in 1996 which describes a superset
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118of the SVr4 API. The library is BASE conformant with this standard.
119We would like to make ncurses fully conformant at the EXTENDED level
120supporting internationalization.
121
1222. DOS port
123
1d102085 124Only a few of the files in the library depend on the terminfo format.
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125It should be possible to further kernelize the package, then rewrite
126a small number of core files to produce a functionally-compatible
127port that would do updates to a memory-mapped screen area. The first
128result of this would be a DOS port.
129
1303. X port
131
132It would be nice if ncurses could recognize when it was running under X and
133maintain its own window. With this feature, all ncurses programs would
134automatically become X programs. The challenge is to handle resize events
135properly.
136
1374. Unused capabilities
138
139The currently unused capabilities fall naturally into several groups:
140
141A. Status-line capabilities:
142
143 Booleans: has_status_line, status_line_esc_ok.
144 Numerics: width_status_line.
145 Strings: dis_status_line, from_status_line, to_status_line.
146
147System V Release 1 curses made no use of these at all. SVr4's use, if
148any, is unknown. From the AT&T termcap file it looks like curses, in general,
149shouldn't use them; terminal variants with status lines have their line count
150decremented by 1, suggesting that curses is supposed to leave the status line
151alone.
152
153B. Printer capabilities:
154
155 Boolean: col_addr_glitch, cr_cancels_micro_mode, has_print_wheel,
156 row_addr_glitch, semi_auto_right_margin, cpi_changes_res,
157 lpi_changes_res.
158 Numeric: buffer_capacity, dot_horz_spacing, dot_vert_spacing,
159 max_micro_address, max_micro_jump, micro_col_size,
160 micro_line_size, number_of_pins, output_res_char,
161 output_res_line, output_res_horz_inch, print_rate,
162 wide_char_size, bit_image_entwining, bit_image_type.
163 String: down_half_line, form_feed, up_half_line, set_left_margin,
164 set_right_margin, clear_margins, change_char_pitch
165 ... set_page_length (all the SVr4 printer caps),
166
167Curses doesn't use these.
168
169C. Printer-control capabilities:
170
171 Boolean: prtr_silent.
172 Strings: print_screen, prtr_on, prtr_off, prtr_non.
173
174Curses doesn't use these.
175
176D. Dialer strings:
177
178 Strings: hangup, dial_phone, quick_dial, tone, pulse, flash_hook,
179 fixed_pause, wait_tone.
180
181Curses doesn't use these.
182
183E. Window and virtual-terminal capabilities:
184
185 Numerics: maximum_windows, virtual_terminal.
186 Strings: req_for_input, create_window, goto_window, set_window.
187
188These seem to be fossils from some AT&T experiments on character-based
189window systems that never escaped the lab. The virtual_terminal cap had
190something to do with building terminal emulations into tty line disciplines.
191
192F. Unused VDT capabilities:
193
194 Booleans: erase_overstrike, has_meta_key, insert_null_glitch,
195 move_insert, dest_tabs_magic_smso, transparent_underline,
196 needs_xon_xoff, hard_cursor.
197 Numerics: lines_of_memory, buttons.
198 Strings: pkey_key, pkey_local, pkey_xmit, underline_char,
199 enter_xon_mode, exit_xon_mode, xon_character, xoff_character,
200 display_clock, remove_clock, user[0-5], display_pc_char,
201 enter_scancode_mode, exit_scancode_mode, pc_term_options,
202 scancode_escape, alt_scancode_esc.
203
204These are the potentially important ones for ncurses. Notes:
205
206 i) ncurses doesn't need move_insert; it never uses cup/hpa/vpa while
207 insert_mode is on.
208
209 ii) We probably don't care about dest_tabs_magic_smso; only
210 Telerays used it and they're all long obsolete.
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212-- vile:txtmode