lisp/term/xterm.el

   1 ;;; xterm.el --- define function key sequences and standard colors for xterm
   2
   3 ;; Copyright (C) 1995, 2001, 2002, 2003, 2004, 2005,
   4 ;;   2006, 2007 Free Software Foundation, Inc.
   5
   6 ;; Author: FSF
   7 ;; Keywords: terminals
   8
   9 ;; This file is part of GNU Emacs.
  10
  11 ;; GNU Emacs is free software; you can redistribute it and/or modify
  12 ;; it under the terms of the GNU General Public License as published by
  13 ;; the Free Software Foundation; either version 2, or (at your option)
  14 ;; any later version.
  15
  16 ;; GNU Emacs is distributed in the hope that it will be useful,
  17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 ;; GNU General Public License for more details.
  20
  21 ;; You should have received a copy of the GNU General Public License
  22 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  23 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  24 ;; Boston, MA 02110-1301, USA.
  25
  26 ;;; Commentary:
  27
  28 ;;; Code:
  29
  30 (defun terminal-init-xterm ()
  31   "Terminal initialization function for xterm."
  32   ;; rxvt terminals sometimes set the TERM variable to "xterm", but
  33   ;; rxvt's keybindings that are incompatible with xterm's. It is
  34   ;; better in that case to use rxvt's initializion function.
  35   (if (and (getenv "COLORTERM")
  36            (string-match "\\`rxvt" (getenv "COLORTERM")))
  37       (progn
  38         (eval-and-compile (load "term/rxvt"))
  39         (terminal-init-rxvt))
  40
  41     ;; The terminal intialization C code file might have initialized
  42     ;; function keys F13->F60 from the termcap/terminfo information.  On
  43     ;; a PC-style keyboard these keys correspond to
  44     ;; MODIFIER-FUNCTION_KEY, where modifier is S-, C, A-, C-S-.  The
  45     ;; code here subsitutes the corresponding defintions in
  46     ;; function-key-map. This substitution is needed because if a key
  47     ;; definition is found in function-key-map, there are no further
  48     ;; lookups in other keymaps.
  49     (substitute-key-definition [f13] [S-f1] function-key-map)
  50     (substitute-key-definition [f14] [S-f2] function-key-map)
  51     (substitute-key-definition [f15] [S-f3] function-key-map)
  52     (substitute-key-definition [f16] [S-f4] function-key-map)
  53     (substitute-key-definition [f17] [S-f5] function-key-map)
  54     (substitute-key-definition [f18] [S-f6] function-key-map)
  55     (substitute-key-definition [f19] [S-f7] function-key-map)
  56     (substitute-key-definition [f20] [S-f8] function-key-map)
  57     (substitute-key-definition [f21] [S-f9] function-key-map)
  58     (substitute-key-definition [f22] [S-f10] function-key-map)
  59     (substitute-key-definition [f23] [S-f11] function-key-map)
  60     (substitute-key-definition [f24] [S-f12] function-key-map)
  61
  62     (substitute-key-definition [f25] [C-f1] function-key-map)
  63     (substitute-key-definition [f26] [C-f2] function-key-map)
  64     (substitute-key-definition [f27] [C-f3] function-key-map)
  65     (substitute-key-definition [f28] [C-f4] function-key-map)
  66     (substitute-key-definition [f29] [C-f5] function-key-map)
  67     (substitute-key-definition [f30] [C-f6] function-key-map)
  68     (substitute-key-definition [f31] [C-f7] function-key-map)
  69     (substitute-key-definition [f32] [C-f8] function-key-map)
  70     (substitute-key-definition [f33] [C-f9] function-key-map)
  71     (substitute-key-definition [f34] [C-f10] function-key-map)
  72     (substitute-key-definition [f35] [C-f11] function-key-map)
  73     (substitute-key-definition [f36] [C-f12] function-key-map)
  74
  75     (substitute-key-definition [f37] [C-S-f1] function-key-map)
  76     (substitute-key-definition [f38] [C-S-f2] function-key-map)
  77     (substitute-key-definition [f39] [C-S-f3] function-key-map)
  78     (substitute-key-definition [f40] [C-S-f4] function-key-map)
  79     (substitute-key-definition [f41] [C-S-f5] function-key-map)
  80     (substitute-key-definition [f42] [C-S-f6] function-key-map)
  81     (substitute-key-definition [f43] [C-S-f7] function-key-map)
  82     (substitute-key-definition [f44] [C-S-f8] function-key-map)
  83     (substitute-key-definition [f45] [C-S-f9] function-key-map)
  84     (substitute-key-definition [f46] [C-S-f10] function-key-map)
  85     (substitute-key-definition [f47] [C-S-f11] function-key-map)
  86     (substitute-key-definition [f48] [C-S-f12] function-key-map)
  87
  88     (substitute-key-definition [f49] [A-f1] function-key-map)
  89     (substitute-key-definition [f50] [A-f2] function-key-map)
  90     (substitute-key-definition [f51] [A-f3] function-key-map)
  91     (substitute-key-definition [f52] [A-f4] function-key-map)
  92     (substitute-key-definition [f53] [A-f5] function-key-map)
  93     (substitute-key-definition [f54] [A-f6] function-key-map)
  94     (substitute-key-definition [f55] [A-f7] function-key-map)
  95     (substitute-key-definition [f56] [A-f8] function-key-map)
  96     (substitute-key-definition [f57] [A-f9] function-key-map)
  97     (substitute-key-definition [f58] [A-f10] function-key-map)
  98     (substitute-key-definition [f59] [A-f11] function-key-map)
  99     (substitute-key-definition [f60] [A-f12] function-key-map)
 100
 101     (let ((map (make-sparse-keymap)))
 102       ;; xterm from X.org 6.8.2 uses these key definitions.
 103       (define-key map "\eOP" [f1])
 104       (define-key map "\eOQ" [f2])
 105       (define-key map "\eOR" [f3])
 106       (define-key map "\eOS" [f4])
 107       (define-key map "\e[15~" [f5])
 108       (define-key map "\e[17~" [f6])
 109       (define-key map "\e[18~" [f7])
 110       (define-key map "\e[19~" [f8])
 111       (define-key map "\e[20~" [f9])
 112       (define-key map "\e[21~" [f10])
 113       (define-key map "\e[23~" [f11])
 114       (define-key map "\e[24~" [f12])
 115
 116       (define-key map "\eO2P" [S-f1])
 117       (define-key map "\eO2Q" [S-f2])
 118       (define-key map "\eO2R" [S-f3])
 119       (define-key map "\eO2S" [S-f4])
 120       (define-key map "\e[1;2P" [S-f1])
 121       (define-key map "\e[1;2Q" [S-f2])
 122       (define-key map "\e[1;2R" [S-f3])
 123       (define-key map "\e[1;2S" [S-f4])
 124       (define-key map "\e[15;2~" [S-f5])
 125       (define-key map "\e[17;2~" [S-f6])
 126       (define-key map "\e[18;2~" [S-f7])
 127       (define-key map "\e[19;2~" [S-f8])
 128       (define-key map "\e[20;2~" [S-f9])
 129       (define-key map "\e[21;2~" [S-f10])
 130       (define-key map "\e[23;2~" [S-f11])
 131       (define-key map "\e[24;2~" [S-f12])
 132
 133       (define-key map "\eO5P" [C-f1])
 134       (define-key map "\eO5Q" [C-f2])
 135       (define-key map "\eO5R" [C-f3])
 136       (define-key map "\eO5S" [C-f4])
 137       (define-key map "\e[15;5~" [C-f5])
 138       (define-key map "\e[17;5~" [C-f6])
 139       (define-key map "\e[18;5~" [C-f7])
 140       (define-key map "\e[19;5~" [C-f8])
 141       (define-key map "\e[20;5~" [C-f9])
 142       (define-key map "\e[21;5~" [C-f10])
 143       (define-key map "\e[23;5~" [C-f11])
 144       (define-key map "\e[24;5~" [C-f12])
 145
 146       (define-key map "\eO6P" [C-S-f1])
 147       (define-key map "\eO6Q" [C-S-f2])
 148       (define-key map "\eO6R" [C-S-f3])
 149       (define-key map "\eO6S" [C-S-f4])
 150       (define-key map "\e[15;6~" [C-S-f5])
 151       (define-key map "\e[17;6~" [C-S-f6])
 152       (define-key map "\e[18;6~" [C-S-f7])
 153       (define-key map "\e[19;6~" [C-S-f8])
 154       (define-key map "\e[20;6~" [C-S-f9])
 155       (define-key map "\e[21;6~" [C-S-f10])
 156       (define-key map "\e[23;6~" [C-S-f11])
 157       (define-key map "\e[24;6~" [C-S-f12])
 158
 159       (define-key map "\eO3P" [A-f1])
 160       (define-key map "\eO3Q" [A-f2])
 161       (define-key map "\eO3R" [A-f3])
 162       (define-key map "\eO3S" [A-f4])
 163       (define-key map "\e[15;3~" [A-f5])
 164       (define-key map "\e[17;3~" [A-f6])
 165       (define-key map "\e[18;3~" [A-f7])
 166       (define-key map "\e[19;3~" [A-f8])
 167       (define-key map "\e[20;3~" [A-f9])
 168       (define-key map "\e[21;3~" [A-f10])
 169       (define-key map "\e[23;3~" [A-f11])
 170       (define-key map "\e[24;3~" [A-f12])
 171
 172       (define-key map "\eOA" [up])
 173       (define-key map "\eOB" [down])
 174       (define-key map "\eOC" [right])
 175       (define-key map "\eOD" [left])
 176       (define-key map "\eOF" [end])
 177       (define-key map "\eOH" [home])
 178
 179       (define-key map "\e[1;2A" [S-up])
 180       (define-key map "\e[1;2B" [S-down])
 181       (define-key map "\e[1;2C" [S-right])
 182       (define-key map "\e[1;2D" [S-left])
 183       (define-key map "\e[1;2F" [S-end])
 184       (define-key map "\e[1;2H" [S-home])
 185
 186       (define-key map "\e[1;5A" [C-up])
 187       (define-key map "\e[1;5B" [C-down])
 188       (define-key map "\e[1;5C" [C-right])
 189       (define-key map "\e[1;5D" [C-left])
 190       (define-key map "\e[1;5F" [C-end])
 191       (define-key map "\e[1;5H" [C-home])
 192
 193       (define-key map "\e[1;6A" [C-S-up])
 194       (define-key map "\e[1;6B" [C-S-down])
 195       (define-key map "\e[1;6C" [C-S-right])
 196       (define-key map "\e[1;6D" [C-S-left])
 197       (define-key map "\e[1;6F" [C-S-end])
 198       (define-key map "\e[1;6H" [C-S-home])
 199
 200       (define-key map "\e[1;3A" [A-up])
 201       (define-key map "\e[1;3B" [A-down])
 202       (define-key map "\e[1;3C" [A-right])
 203       (define-key map "\e[1;3D" [A-left])
 204       (define-key map "\e[1;3F" [A-end])
 205       (define-key map "\e[1;3H" [A-home])
 206
 207       (define-key map "\e[2~" [insert])
 208       (define-key map "\e[3~" [delete])
 209       (define-key map "\e[5~" [prior])
 210       (define-key map "\e[6~" [next])
 211
 212       (define-key map "\e[2;2~" [S-insert])
 213       (define-key map "\e[3;2~" [S-delete])
 214       (define-key map "\e[5;2~" [S-prior])
 215       (define-key map "\e[6;2~" [S-next])
 216
 217       (define-key map "\e[2;5~" [C-insert])
 218       (define-key map "\e[3;5~" [C-delete])
 219       (define-key map "\e[5;5~" [C-prior])
 220       (define-key map "\e[6;5~" [C-next])
 221
 222       (define-key map "\e[2;6~" [C-S-insert])
 223       (define-key map "\e[3;6~" [C-S-delete])
 224       (define-key map "\e[5;6~" [C-S-prior])
 225       (define-key map "\e[6;6~" [C-S-next])
 226
 227       (define-key map "\e[2;3~" [A-insert])
 228       (define-key map "\e[3;3~" [A-delete])
 229       (define-key map "\e[5;3~" [A-prior])
 230       (define-key map "\e[6;3~" [A-next])
 231
 232       (define-key map "\e[4~" [select])
 233       (define-key map "\e[29~" [print])
 234
 235       (define-key map "\eOj" [kp-multiply])
 236       (define-key map "\eOk" [kp-add])
 237       (define-key map "\eOl" [kp-separator])
 238       (define-key map "\eOm" [kp-subtract])
 239       (define-key map "\eOo" [kp-divide])
 240       (define-key map "\eOp" [kp-0])
 241       (define-key map "\eOq" [kp-1])
 242       (define-key map "\eOr" [kp-2])
 243       (define-key map "\eOs" [kp-3])
 244       (define-key map "\eOt" [kp-4])
 245       (define-key map "\eOu" [kp-5])
 246       (define-key map "\eOv" [kp-6])
 247       (define-key map "\eOw" [kp-7])
 248       (define-key map "\eOx" [kp-8])
 249       (define-key map "\eOy" [kp-9])
 250
 251       ;; These keys are available in xterm starting from version 216
 252       ;; if the modifyOtherKeys resource is set to 1.
 253
 254       (define-key map "\e[27;5;9~"   [C-tab])
 255       (define-key map "\e[27;5;13~"  [C-return])
 256       (define-key map "\e[27;5;39~"  [?\C-\'])
 257       (define-key map "\e[27;5;44~"  [?\C-,])
 258       (define-key map "\e[27;5;45~"  [?\C--])
 259       (define-key map "\e[27;5;46~"  [?\C-.])
 260       (define-key map "\e[27;5;47~"  [?\C-/])
 261       (define-key map "\e[27;5;48~"  [?\C-0])
 262       (define-key map "\e[27;5;49~"  [?\C-1])
 263       ;; Not all C-DIGIT keys have a distinct binding.
 264       (define-key map "\e[27;5;57~"  [?\C-9])
 265       (define-key map "\e[27;5;59~"  [?\C-\;])
 266       (define-key map "\e[27;5;61~"  [?\C-=])
 267       (define-key map "\e[27;5;92~"  [?\C-\\])
 268
 269       (define-key map "\e[27;6;33~"  [?\C-!])
 270       (define-key map "\e[27;6;34~"  [?\C-\"])
 271       (define-key map "\e[27;6;35~"  [?\C-#])
 272       (define-key map "\e[27;6;36~"  [?\C-$])
 273       (define-key map "\e[27;6;37~"  [?\C-%])
 274       (define-key map "\e[27;6;38~"  [?\C-&])
 275       (define-key map "\e[27;6;40~"  [?\C-\(])
 276       (define-key map "\e[27;6;41~"  [?\C-\)])
 277       (define-key map "\e[27;6;42~"  [?\C-*])
 278       (define-key map "\e[27;6;43~"  [?\C-+])
 279       (define-key map "\e[27;6;58~"  [?\C-:])
 280       (define-key map "\e[27;6;60~"  [?\C-<])
 281       (define-key map "\e[27;6;62~"  [?\C->])
 282       (define-key map "\e[27;6;63~"  [(control ??)])
 283
 284       ;; These are the strings emitted for various C-M- combinations
 285       ;; for keyboards that the Meta and Alt modifiers are on the same
 286       ;; key (usually labeled "Alt").
 287       (define-key map "\e[27;13;9~"  [C-M-tab])
 288       (define-key map "\e[27;13;13~" [C-M-return])
 289
 290       (define-key map "\e[27;13;39~" [?\C-\M-\'])
 291       (define-key map "\e[27;13;44~" [?\C-\M-,])
 292       (define-key map "\e[27;13;45~" [?\C-\M--])
 293       (define-key map "\e[27;13;46~" [?\C-\M-.])
 294       (define-key map "\e[27;13;47~" [?\C-\M-/])
 295       (define-key map "\e[27;13;48~" [?\C-\M-0])
 296       (define-key map "\e[27;13;49~" [?\C-\M-1])
 297       (define-key map "\e[27;13;50~" [?\C-\M-2])
 298       (define-key map "\e[27;13;51~" [?\C-\M-3])
 299       (define-key map "\e[27;13;52~" [?\C-\M-4])
 300       (define-key map "\e[27;13;53~" [?\C-\M-5])
 301       (define-key map "\e[27;13;54~" [?\C-\M-6])
 302       (define-key map "\e[27;13;55~" [?\C-\M-7])
 303       (define-key map "\e[27;13;56~" [?\C-\M-8])
 304       (define-key map "\e[27;13;57~" [?\C-\M-9])
 305       (define-key map "\e[27;13;59~" [?\C-\M-\;])
 306       (define-key map "\e[27;13;61~" [?\C-\M-=])
 307       (define-key map "\e[27;13;92~" [?\C-\M-\\])
 308
 309       (define-key map "\e[27;14;33~"  [?\C-\M-!])
 310       (define-key map "\e[27;14;34~"  [?\C-\M-\"])
 311       (define-key map "\e[27;14;35~"  [?\C-\M-#])
 312       (define-key map "\e[27;14;36~"  [?\C-\M-$])
 313       (define-key map "\e[27;14;37~"  [?\C-\M-%])
 314       (define-key map "\e[27;14;38~"  [?\C-\M-&])
 315       (define-key map "\e[27;14;40~"  [?\C-\M-\(])
 316       (define-key map "\e[27;14;41~"  [?\C-\M-\)])
 317       (define-key map "\e[27;14;42~"  [?\C-\M-*])
 318       (define-key map "\e[27;14;43~"  [?\C-\M-+])
 319       (define-key map "\e[27;14;58~"  [?\C-\M-:])
 320       (define-key map "\e[27;14;60~"  [?\C-\M-<])
 321       (define-key map "\e[27;14;62~"  [?\C-\M->])
 322       (define-key map "\e[27;14;63~"  [(control meta ??)])
 323
 324       (define-key map "\e[27;7;9~"  [C-M-tab])
 325       (define-key map "\e[27;7;13~" [C-M-return])
 326
 327       (define-key map "\e[27;7;32~" [?\C-\M-\s])
 328       (define-key map "\e[27;7;39~" [?\C-\M-\'])
 329       (define-key map "\e[27;7;44~" [?\C-\M-,])
 330       (define-key map "\e[27;7;45~" [?\C-\M--])
 331       (define-key map "\e[27;7;46~" [?\C-\M-.])
 332       (define-key map "\e[27;7;47~" [?\C-\M-/])
 333       (define-key map "\e[27;7;48~" [?\C-\M-0])
 334       (define-key map "\e[27;7;49~" [?\C-\M-1])
 335       (define-key map "\e[27;7;50~" [?\C-\M-2])
 336       (define-key map "\e[27;7;51~" [?\C-\M-3])
 337       (define-key map "\e[27;7;52~" [?\C-\M-4])
 338       (define-key map "\e[27;7;53~" [?\C-\M-5])
 339       (define-key map "\e[27;7;54~" [?\C-\M-6])
 340       (define-key map "\e[27;7;55~" [?\C-\M-7])
 341       (define-key map "\e[27;7;56~" [?\C-\M-8])
 342       (define-key map "\e[27;7;57~" [?\C-\M-9])
 343       (define-key map "\e[27;7;59~" [?\C-\M-\;])
 344       (define-key map "\e[27;7;61~" [?\C-\M-=])
 345       (define-key map "\e[27;7;92~" [?\C-\M-\\])
 346
 347       (define-key map "\e[27;8;33~"  [?\C-\M-!])
 348       (define-key map "\e[27;8;34~"  [?\C-\M-\"])
 349       (define-key map "\e[27;8;35~"  [?\C-\M-#])
 350       (define-key map "\e[27;8;36~"  [?\C-\M-$])
 351       (define-key map "\e[27;8;37~"  [?\C-\M-%])
 352       (define-key map "\e[27;8;38~"  [?\C-\M-&])
 353       (define-key map "\e[27;8;40~"  [?\C-\M-\(])
 354       (define-key map "\e[27;8;41~"  [?\C-\M-\)])
 355       (define-key map "\e[27;8;42~"  [?\C-\M-*])
 356       (define-key map "\e[27;8;43~"  [?\C-\M-+])
 357       (define-key map "\e[27;8;58~"  [?\C-\M-:])
 358       (define-key map "\e[27;8;60~"  [?\C-\M-<])
 359       (define-key map "\e[27;8;62~"  [?\C-\M->])
 360       (define-key map "\e[27;8;63~"  [(control meta ??)])
 361
 362       (define-key map "\e[27;2;9~"   [S-tab])
 363       (define-key map "\e[27;2;13~"  [S-return])
 364
 365       (define-key map "\e[27;6;9~"   [C-S-tab])
 366       (define-key map "\e[27;6;13~"  [C-S-return])
 367
 368       ;; Other versions of xterm might emit these.
 369       (define-key map "\e[A" [up])
 370       (define-key map "\e[B" [down])
 371       (define-key map "\e[C" [right])
 372       (define-key map "\e[D" [left])
 373       (define-key map "\e[1~" [home])
 374
 375       (define-key map "\eO2A" [S-up])
 376       (define-key map "\eO2B" [S-down])
 377       (define-key map "\eO2C" [S-right])
 378       (define-key map "\eO2D" [S-left])
 379       (define-key map "\eO2F" [S-end])
 380       (define-key map "\eO2H" [S-home])
 381
 382       (define-key map "\eO5A" [C-up])
 383       (define-key map "\eO5B" [C-down])
 384       (define-key map "\eO5C" [C-right])
 385       (define-key map "\eO5D" [C-left])
 386       (define-key map "\eO5F" [C-end])
 387       (define-key map "\eO5H" [C-home])
 388
 389       (define-key map "\e[11~" [f1])
 390       (define-key map "\e[12~" [f2])
 391       (define-key map "\e[13~" [f3])
 392       (define-key map "\e[14~" [f4])
 393
 394       ;; Use inheritance to let the main keymap override those defaults.
 395       ;; This way we don't override terminfo-derived settings or settings
 396       ;; made in the .emacs file.
 397       (set-keymap-parent map (keymap-parent function-key-map))
 398       (set-keymap-parent function-key-map map))
 399
 400     ;; Do it!
 401     (xterm-register-default-colors)
 402     ;; This recomputes all the default faces given the colors we've just set up.
 403     (tty-set-up-initial-frame-faces)
 404
 405     ;; Try to turn on the modifyOtherKeys feature on modern xterms.
 406     ;; When it is turned on much more key bindings work: things like
 407     ;; C-. C-, etc.
 408     ;; To do that we need to find out if the current terminal supports
 409     ;; modifyOtherKeys. At this time only xterm does.
 410     (let ((coding-system-for-read 'binary)
 411           (chr nil)
 412           (str nil))
 413       ;; Try to find out the type of terminal by sending a "Secondary
 414       ;; Device Attributes (DA)" query.
 415       (send-string-to-terminal "\e[>0c")
 416
 417       ;; The reply should be of the form: \e [ > NUMBER1 ; NUMBER2 ; NUMBER3 c
 418       (when (equal (read-event nil nil 0.1) ?\e)
 419         (when (equal (read-event nil nil 0.1) ?\[)
 420           (while (not (equal (setq chr (read-event nil nil 0.1)) ?c))
 421             (setq str (concat str (string chr))))
 422           (when (string-match ">0;\\([0-9]+\\);0" str)
 423             ;; NUMBER2 is the xterm version number, look for something
 424             ;; greater than 216, the version when modifyOtherKeys was
 425             ;; introduced.
 426             (when (>= (string-to-number
 427                        (substring str (match-beginning 1) (match-end 1))) 216)
 428               ;; Make sure that the modifyOtherKeys state is restored when
 429               ;; suspending, resuming and exiting.
 430               (add-hook 'suspend-hook 'xterm-turn-off-modify-other-keys)
 431               (add-hook 'suspend-resume-hook 'xterm-turn-on-modify-other-keys)
 432               (add-hook 'kill-emacs-hook 'xterm-turn-off-modify-other-keys)
 433               (xterm-turn-on-modify-other-keys))))))))
 434
 435 ;; Set up colors, for those versions of xterm that support it.
 436 (defvar xterm-standard-colors
 437   ;; The names in the comments taken from XTerm-col.ad in the xterm
 438   ;; distribution, see ftp://dickey.his.com/xterm/.  RGB values are
 439   ;; from rgb.txt.
 440   '(("black"          0 (  0   0   0))  ; black
 441     ("red"            1 (205   0   0))  ; red3
 442     ("green"          2 (  0 205   0))  ; green3
 443     ("yellow"         3 (205 205   0))  ; yellow3
 444     ("blue"           4 (  0   0 238))  ; blue2
 445     ("magenta"        5 (205   0 205))  ; magenta3
 446     ("cyan"           6 (  0 205 205))  ; cyan3
 447     ("white"          7 (229 229 229))  ; gray90
 448     ("brightblack"    8 (127 127 127))  ; gray50
 449     ("brightred"      9 (255   0   0))  ; red
 450     ("brightgreen"   10 (  0 255   0))  ; green
 451     ("brightyellow"  11 (255 255   0))  ; yellow
 452     ("brightblue"    12 (92   92 255))  ; rgb:5c/5c/ff
 453     ("brightmagenta" 13 (255   0 255))  ; magenta
 454     ("brightcyan"    14 (  0 255 255))  ; cyan
 455     ("brightwhite"   15 (255 255 255))) ; white
 456   "Names of 16 standard xterm/aixterm colors, their numbers, and RGB values.")
 457
 458 (defun xterm-rgb-convert-to-16bit (prim)
 459   "Convert an 8-bit primary color value PRIM to a corresponding 16-bit value."
 460   (logior prim (lsh prim 8)))
 461
 462 (defun xterm-register-default-colors ()
 463   "Register the default set of colors for xterm or compatible emulator.
 464
 465 This function registers the number of colors returned by `display-color-cells'
 466 for the currently selected frame.  The first 16 colors are taken from
 467 `xterm-standard-colors', which see, while the rest are computed assuming
 468 either the 88- or 256-color standard color scheme supported by latest
 469 versions of xterm."
 470   (let* ((ncolors (display-color-cells))
 471          (colors xterm-standard-colors)
 472          (color (car colors)))
 473     (if (> ncolors 0)
 474         ;; Clear the 8 default tty colors registered by startup.el
 475         (tty-color-clear))
 476     ;; Only register as many colors as are supported by the display.
 477     (while (and (> ncolors 0) colors)
 478       (tty-color-define (car color) (cadr color)
 479                         (mapcar 'xterm-rgb-convert-to-16bit
 480                                 (car (cddr color))))
 481       (setq colors (cdr colors)
 482             color (car colors)
 483             ncolors (1- ncolors)))
 484     ;; We've exhausted the colors from `xterm-standard-colors'.  If there
 485     ;; are more colors to support, compute them now.
 486     (when (> ncolors 0)
 487       (cond
 488        ((= ncolors 240) ; 256-color xterm
 489         ;; 216 non-gray colors first
 490         (let ((r 0) (g 0) (b 0))
 491           (while (> ncolors 24)
 492             ;; This and other formulae taken from 256colres.pl and
 493             ;; 88colres.pl in the xterm distribution.
 494             (tty-color-define (format "color-%d" (- 256 ncolors))
 495                               (- 256 ncolors)
 496                               (mapcar 'xterm-rgb-convert-to-16bit
 497                                       (list (if (zerop r) 0 (+ (* r 40) 55))
 498                                             (if (zerop g) 0 (+ (* g 40) 55))
 499                                             (if (zerop b) 0 (+ (* b 40) 55)))))
 500
 501             (setq b (1+ b))
 502             (if (> b 5)
 503                 (setq g (1+ g)
 504                       b 0))
 505             (if (> g 5)
 506                 (setq r (1+ r)
 507                       g 0))
 508             (setq ncolors (1- ncolors))))
 509         ;; Now the 24 gray colors
 510         (while (> ncolors 0)
 511           (setq color (xterm-rgb-convert-to-16bit (+ 8 (* (- 24 ncolors) 10))))
 512           (tty-color-define (format "color-%d" (- 256 ncolors))
 513                             (- 256 ncolors)
 514                             (list color color color))
 515           (setq ncolors (1- ncolors))))
 516        ((= ncolors 72)  ; 88-color xterm
 517         ;; 64 non-gray colors
 518         (let ((levels '(0 139 205 255))
 519               (r 0) (g 0) (b 0))
 520           (while (> ncolors 8)
 521             (tty-color-define (format "color-%d" (- 88 ncolors))
 522                               (- 88 ncolors)
 523                               (mapcar 'xterm-rgb-convert-to-16bit
 524                                       (list (nth r levels)
 525                                             (nth g levels)
 526                                             (nth b levels))))
 527             (setq b (1+ b))
 528             (if (> b 3)
 529                 (setq g (1+ g)
 530                       b 0))
 531             (if (> g 3)
 532                 (setq r (1+ r)
 533                       g 0))
 534             (setq ncolors (1- ncolors))))
 535         ;; Now the 8 gray colors
 536         (while (> ncolors 0)
 537           (setq color (xterm-rgb-convert-to-16bit
 538                        (floor
 539                         (if (= ncolors 8)
 540                             46.36363636
 541                           (+ (* (- 8 ncolors) 23.18181818) 69.54545454)))))
 542           (tty-color-define (format "color-%d" (- 88 ncolors))
 543                             (- 88 ncolors)
 544                             (list color color color))
 545           (setq ncolors (1- ncolors))))
 546        (t (error "Unsupported number of xterm colors (%d)" (+ 16 ncolors)))))
 547     ;; Modifying color mappings means realized faces don't use the
 548     ;; right colors, so clear them.
 549     (clear-face-cache)))
 550
 551 (defun xterm-turn-on-modify-other-keys ()
 552   "Turn on the modifyOtherKeys feature of xterm."
 553   (send-string-to-terminal "\e[>4;1m"))
 554
 555 (defun xterm-turn-off-modify-other-keys ()
 556   "Turn off the modifyOtherKeys feature of xterm."
 557   (send-string-to-terminal "\e[>4m"))
 558
 559 ;; arch-tag: 12e7ebdd-1e6c-4b25-b0f9-35ace25e855a
 560 ;;; xterm.el ends here