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 3, 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 (eval-when-compile (require 'xt-mouse))
  31
  32 (defvar xterm-function-map
  33   (let ((map (make-sparse-keymap)))
  34
  35     ;; xterm from X.org 6.8.2 uses these key definitions.
  36     (define-key map "\eOP" [f1])
  37     (define-key map "\eOQ" [f2])
  38     (define-key map "\eOR" [f3])
  39     (define-key map "\eOS" [f4])
  40     (define-key map "\e[15~" [f5])
  41     (define-key map "\e[17~" [f6])
  42     (define-key map "\e[18~" [f7])
  43     (define-key map "\e[19~" [f8])
  44     (define-key map "\e[20~" [f9])
  45     (define-key map "\e[21~" [f10])
  46     (define-key map "\e[23~" [f11])
  47     (define-key map "\e[24~" [f12])
  48
  49     (define-key map "\eO2P" [S-f1])
  50     (define-key map "\eO2Q" [S-f2])
  51     (define-key map "\eO2R" [S-f3])
  52     (define-key map "\eO2S" [S-f4])
  53     (define-key map "\e[1;2P" [S-f1])
  54     (define-key map "\e[1;2Q" [S-f2])
  55     (define-key map "\e[1;2R" [S-f3])
  56     (define-key map "\e[1;2S" [S-f4])
  57     (define-key map "\e[15;2~" [S-f5])
  58     (define-key map "\e[17;2~" [S-f6])
  59     (define-key map "\e[18;2~" [S-f7])
  60     (define-key map "\e[19;2~" [S-f8])
  61     (define-key map "\e[20;2~" [S-f9])
  62     (define-key map "\e[21;2~" [S-f10])
  63     (define-key map "\e[23;2~" [S-f11])
  64     (define-key map "\e[24;2~" [S-f12])
  65
  66     (define-key map "\eO5P" [C-f1])
  67     (define-key map "\eO5Q" [C-f2])
  68     (define-key map "\eO5R" [C-f3])
  69     (define-key map "\eO5S" [C-f4])
  70     (define-key map "\e[15;5~" [C-f5])
  71     (define-key map "\e[17;5~" [C-f6])
  72     (define-key map "\e[18;5~" [C-f7])
  73     (define-key map "\e[19;5~" [C-f8])
  74     (define-key map "\e[20;5~" [C-f9])
  75     (define-key map "\e[21;5~" [C-f10])
  76     (define-key map "\e[23;5~" [C-f11])
  77     (define-key map "\e[24;5~" [C-f12])
  78
  79     (define-key map "\eO6P" [C-S-f1])
  80     (define-key map "\eO6Q" [C-S-f2])
  81     (define-key map "\eO6R" [C-S-f3])
  82     (define-key map "\eO6S" [C-S-f4])
  83     (define-key map "\e[15;6~" [C-S-f5])
  84     (define-key map "\e[17;6~" [C-S-f6])
  85     (define-key map "\e[18;6~" [C-S-f7])
  86     (define-key map "\e[19;6~" [C-S-f8])
  87     (define-key map "\e[20;6~" [C-S-f9])
  88     (define-key map "\e[21;6~" [C-S-f10])
  89     (define-key map "\e[23;6~" [C-S-f11])
  90     (define-key map "\e[24;6~" [C-S-f12])
  91
  92     (define-key map "\eO3P" [M-f1])
  93     (define-key map "\eO3Q" [M-f2])
  94     (define-key map "\eO3R" [M-f3])
  95     (define-key map "\eO3S" [M-f4])
  96     (define-key map "\e[15;3~" [M-f5])
  97     (define-key map "\e[17;3~" [M-f6])
  98     (define-key map "\e[18;3~" [M-f7])
  99     (define-key map "\e[19;3~" [M-f8])
 100     (define-key map "\e[20;3~" [M-f9])
 101     (define-key map "\e[21;3~" [M-f10])
 102     (define-key map "\e[23;3~" [M-f11])
 103     (define-key map "\e[24;3~" [M-f12])
 104
 105     (define-key map "\eO4P" [M-S-f1])
 106     (define-key map "\eO4Q" [M-S-f2])
 107     (define-key map "\eO4R" [M-S-f3])
 108     (define-key map "\eO4S" [M-S-f4])
 109     (define-key map "\e[15;4~" [M-S-f5])
 110     (define-key map "\e[17;4~" [M-S-f6])
 111     (define-key map "\e[18;4~" [M-S-f7])
 112     (define-key map "\e[19;4~" [M-S-f8])
 113     (define-key map "\e[20;4~" [M-S-f9])
 114     (define-key map "\e[21;4~" [M-S-f10])
 115     (define-key map "\e[23;4~" [M-S-f11])
 116     (define-key map "\e[24;4~" [M-S-f12])
 117
 118     (define-key map "\eOA" [up])
 119     (define-key map "\eOB" [down])
 120     (define-key map "\eOC" [right])
 121     (define-key map "\eOD" [left])
 122     (define-key map "\eOF" [end])
 123     (define-key map "\eOH" [home])
 124
 125     (define-key map "\e[1;2A" [S-up])
 126     (define-key map "\e[1;2B" [S-down])
 127     (define-key map "\e[1;2C" [S-right])
 128     (define-key map "\e[1;2D" [S-left])
 129     (define-key map "\e[1;2F" [S-end])
 130     (define-key map "\e[1;2H" [S-home])
 131
 132     (define-key map "\e[1;4A" [M-S-up])
 133     (define-key map "\e[1;4B" [M-S-down])
 134     (define-key map "\e[1;4C" [M-S-right])
 135     (define-key map "\e[1;4D" [M-S-left])
 136     (define-key map "\e[1;4F" [M-S-end])
 137     (define-key map "\e[1;4H" [M-S-home])
 138
 139     (define-key map "\e[1;5A" [C-up])
 140     (define-key map "\e[1;5B" [C-down])
 141     (define-key map "\e[1;5C" [C-right])
 142     (define-key map "\e[1;5D" [C-left])
 143     (define-key map "\e[1;5F" [C-end])
 144     (define-key map "\e[1;5H" [C-home])
 145
 146     (define-key map "\e[1;6A" [C-S-up])
 147     (define-key map "\e[1;6B" [C-S-down])
 148     (define-key map "\e[1;6C" [C-S-right])
 149     (define-key map "\e[1;6D" [C-S-left])
 150     (define-key map "\e[1;6F" [C-S-end])
 151     (define-key map "\e[1;6H" [C-S-home])
 152
 153     (define-key map "\e[1;7A" [C-M-up])
 154     (define-key map "\e[1;7B" [C-M-down])
 155     (define-key map "\e[1;7C" [C-M-right])
 156     (define-key map "\e[1;7D" [C-M-left])
 157     (define-key map "\e[1;7F" [C-M-end])
 158     (define-key map "\e[1;7H" [C-M-home])
 159
 160     (define-key map "\e[1;8A" [C-M-S-up])
 161     (define-key map "\e[1;8B" [C-M-S-down])
 162     (define-key map "\e[1;8C" [C-M-S-right])
 163     (define-key map "\e[1;8D" [C-M-S-left])
 164     (define-key map "\e[1;8F" [C-M-S-end])
 165     (define-key map "\e[1;8H" [C-M-S-home])
 166
 167     (define-key map "\e[1;3A" [M-up])
 168     (define-key map "\e[1;3B" [M-down])
 169     (define-key map "\e[1;3C" [M-right])
 170     (define-key map "\e[1;3D" [M-left])
 171     (define-key map "\e[1;3F" [M-end])
 172     (define-key map "\e[1;3H" [M-home])
 173
 174     (define-key map "\e[2~" [insert])
 175     (define-key map "\e[3~" [delete])
 176     (define-key map "\e[5~" [prior])
 177     (define-key map "\e[6~" [next])
 178
 179     (define-key map "\e[2;2~" [S-insert])
 180     (define-key map "\e[3;2~" [S-delete])
 181     (define-key map "\e[5;2~" [S-prior])
 182     (define-key map "\e[6;2~" [S-next])
 183
 184     (define-key map "\e[2;4~" [M-S-insert])
 185     (define-key map "\e[3;4~" [M-S-delete])
 186     (define-key map "\e[5;4~" [M-S-prior])
 187     (define-key map "\e[6;4~" [M-S-next])
 188
 189     (define-key map "\e[2;5~" [C-insert])
 190     (define-key map "\e[3;5~" [C-delete])
 191     (define-key map "\e[5;5~" [C-prior])
 192     (define-key map "\e[6;5~" [C-next])
 193
 194     (define-key map "\e[2;6~" [C-S-insert])
 195     (define-key map "\e[3;6~" [C-S-delete])
 196     (define-key map "\e[5;6~" [C-S-prior])
 197     (define-key map "\e[6;6~" [C-S-next])
 198
 199     (define-key map "\e[2;7~" [C-M-insert])
 200     (define-key map "\e[3;7~" [C-M-delete])
 201     (define-key map "\e[5;7~" [C-M-prior])
 202     (define-key map "\e[6;7~" [C-M-next])
 203
 204     (define-key map "\e[2;8~" [C-M-S-insert])
 205     (define-key map "\e[3;8~" [C-M-S-delete])
 206     (define-key map "\e[5;8~" [C-M-S-prior])
 207     (define-key map "\e[6;8~" [C-M-S-next])
 208
 209     (define-key map "\e[2;3~" [M-insert])
 210     (define-key map "\e[3;3~" [M-delete])
 211     (define-key map "\e[5;3~" [M-prior])
 212     (define-key map "\e[6;3~" [M-next])
 213
 214     (define-key map "\e[4~" [select])
 215     (define-key map "\e[29~" [print])
 216
 217     (define-key map "\eOj" [kp-multiply])
 218     (define-key map "\eOk" [kp-add])
 219     (define-key map "\eOl" [kp-separator])
 220     (define-key map "\eOm" [kp-subtract])
 221     (define-key map "\eOo" [kp-divide])
 222     (define-key map "\eOp" [kp-0])
 223     (define-key map "\eOq" [kp-1])
 224     (define-key map "\eOr" [kp-2])
 225     (define-key map "\eOs" [kp-3])
 226     (define-key map "\eOt" [kp-4])
 227     (define-key map "\eOu" [kp-5])
 228     (define-key map "\eOv" [kp-6])
 229     (define-key map "\eOw" [kp-7])
 230     (define-key map "\eOx" [kp-8])
 231     (define-key map "\eOy" [kp-9])
 232
 233     ;; These keys are available in xterm starting from version 216
 234     ;; if the modifyOtherKeys resource is set to 1.
 235
 236     (define-key map "\e[27;5;9~"   [C-tab])
 237     (define-key map "\e[27;5;13~"  [C-return])
 238     (define-key map "\e[27;5;39~"  [?\C-\'])
 239     (define-key map "\e[27;5;44~"  [?\C-,])
 240     (define-key map "\e[27;5;45~"  [?\C--])
 241     (define-key map "\e[27;5;46~"  [?\C-.])
 242     (define-key map "\e[27;5;47~"  [?\C-/])
 243     (define-key map "\e[27;5;48~"  [?\C-0])
 244     (define-key map "\e[27;5;49~"  [?\C-1])
 245     ;; Not all C-DIGIT keys have a distinct binding.
 246     (define-key map "\e[27;5;57~"  [?\C-9])
 247     (define-key map "\e[27;5;59~"  [?\C-\;])
 248     (define-key map "\e[27;5;61~"  [?\C-=])
 249     (define-key map "\e[27;5;92~"  [?\C-\\])
 250
 251     (define-key map "\e[27;6;33~"  [?\C-!])
 252     (define-key map "\e[27;6;34~"  [?\C-\"])
 253     (define-key map "\e[27;6;35~"  [?\C-#])
 254     (define-key map "\e[27;6;36~"  [?\C-$])
 255     (define-key map "\e[27;6;37~"  [?\C-%])
 256     (define-key map "\e[27;6;38~"  [?\C-&])
 257     (define-key map "\e[27;6;40~"  [?\C-(])
 258     (define-key map "\e[27;6;41~"  [?\C-)])
 259     (define-key map "\e[27;6;42~"  [?\C-*])
 260     (define-key map "\e[27;6;43~"  [?\C-+])
 261     (define-key map "\e[27;6;58~"  [?\C-:])
 262     (define-key map "\e[27;6;60~"  [?\C-<])
 263     (define-key map "\e[27;6;62~"  [?\C->])
 264     (define-key map "\e[27;6;63~"  [(control ??)])
 265
 266     ;; These are the strings emitted for various C-M- combinations
 267     ;; for keyboards that the Meta and Alt modifiers are on the same
 268     ;; key (usually labeled "Alt").
 269     (define-key map "\e[27;13;9~"  [C-M-tab])
 270     (define-key map "\e[27;13;13~" [C-M-return])
 271
 272     (define-key map "\e[27;13;39~" [?\C-\M-\'])
 273     (define-key map "\e[27;13;44~" [?\C-\M-,])
 274     (define-key map "\e[27;13;45~" [?\C-\M--])
 275     (define-key map "\e[27;13;46~" [?\C-\M-.])
 276     (define-key map "\e[27;13;47~" [?\C-\M-/])
 277     (define-key map "\e[27;13;48~" [?\C-\M-0])
 278     (define-key map "\e[27;13;49~" [?\C-\M-1])
 279     (define-key map "\e[27;13;50~" [?\C-\M-2])
 280     (define-key map "\e[27;13;51~" [?\C-\M-3])
 281     (define-key map "\e[27;13;52~" [?\C-\M-4])
 282     (define-key map "\e[27;13;53~" [?\C-\M-5])
 283     (define-key map "\e[27;13;54~" [?\C-\M-6])
 284     (define-key map "\e[27;13;55~" [?\C-\M-7])
 285     (define-key map "\e[27;13;56~" [?\C-\M-8])
 286     (define-key map "\e[27;13;57~" [?\C-\M-9])
 287     (define-key map "\e[27;13;59~" [?\C-\M-\;])
 288     (define-key map "\e[27;13;61~" [?\C-\M-=])
 289     (define-key map "\e[27;13;92~" [?\C-\M-\\])
 290
 291     (define-key map "\e[27;14;33~"  [?\C-\M-!])
 292     (define-key map "\e[27;14;34~"  [?\C-\M-\"])
 293     (define-key map "\e[27;14;35~"  [?\C-\M-#])
 294     (define-key map "\e[27;14;36~"  [?\C-\M-$])
 295     (define-key map "\e[27;14;37~"  [?\C-\M-%])
 296     (define-key map "\e[27;14;38~"  [?\C-\M-&])
 297     (define-key map "\e[27;14;40~"  [?\C-\M-\(])
 298     (define-key map "\e[27;14;41~"  [?\C-\M-\)])
 299     (define-key map "\e[27;14;42~"  [?\C-\M-*])
 300     (define-key map "\e[27;14;43~"  [?\C-\M-+])
 301     (define-key map "\e[27;14;58~"  [?\C-\M-:])
 302     (define-key map "\e[27;14;60~"  [?\C-\M-<])
 303     (define-key map "\e[27;14;62~"  [?\C-\M->])
 304     (define-key map "\e[27;14;63~"  [(control meta ??)])
 305
 306     (define-key map "\e[27;7;9~"  [C-M-tab])
 307     (define-key map "\e[27;7;13~" [C-M-return])
 308
 309     (define-key map "\e[27;7;32~" [?\C-\M-\s])
 310     (define-key map "\e[27;7;39~" [?\C-\M-\'])
 311     (define-key map "\e[27;7;44~" [?\C-\M-,])
 312     (define-key map "\e[27;7;45~" [?\C-\M--])
 313     (define-key map "\e[27;7;46~" [?\C-\M-.])
 314     (define-key map "\e[27;7;47~" [?\C-\M-/])
 315     (define-key map "\e[27;7;48~" [?\C-\M-0])
 316     (define-key map "\e[27;7;49~" [?\C-\M-1])
 317     (define-key map "\e[27;7;50~" [?\C-\M-2])
 318     (define-key map "\e[27;7;51~" [?\C-\M-3])
 319     (define-key map "\e[27;7;52~" [?\C-\M-4])
 320     (define-key map "\e[27;7;53~" [?\C-\M-5])
 321     (define-key map "\e[27;7;54~" [?\C-\M-6])
 322     (define-key map "\e[27;7;55~" [?\C-\M-7])
 323     (define-key map "\e[27;7;56~" [?\C-\M-8])
 324     (define-key map "\e[27;7;57~" [?\C-\M-9])
 325     (define-key map "\e[27;7;59~" [?\C-\M-\;])
 326     (define-key map "\e[27;7;61~" [?\C-\M-=])
 327     (define-key map "\e[27;7;92~" [?\C-\M-\\])
 328
 329     (define-key map "\e[27;8;33~"  [?\C-\M-!])
 330     (define-key map "\e[27;8;34~"  [?\C-\M-\"])
 331     (define-key map "\e[27;8;35~"  [?\C-\M-#])
 332     (define-key map "\e[27;8;36~"  [?\C-\M-$])
 333     (define-key map "\e[27;8;37~"  [?\C-\M-%])
 334     (define-key map "\e[27;8;38~"  [?\C-\M-&])
 335     (define-key map "\e[27;8;40~"  [?\C-\M-\(])
 336     (define-key map "\e[27;8;41~"  [?\C-\M-\)])
 337     (define-key map "\e[27;8;42~"  [?\C-\M-*])
 338     (define-key map "\e[27;8;43~"  [?\C-\M-+])
 339     (define-key map "\e[27;8;58~"  [?\C-\M-:])
 340     (define-key map "\e[27;8;60~"  [?\C-\M-<])
 341     (define-key map "\e[27;8;62~"  [?\C-\M->])
 342     (define-key map "\e[27;8;63~"  [(control meta ??)])
 343
 344     (define-key map "\e[27;2;9~"   [S-tab])
 345     (define-key map "\e[27;2;13~"  [S-return])
 346
 347     (define-key map "\e[27;6;9~"   [C-S-tab])
 348     (define-key map "\e[27;6;13~"  [C-S-return])
 349
 350     ;; Other versions of xterm might emit these.
 351     (define-key map "\e[A" [up])
 352     (define-key map "\e[B" [down])
 353     (define-key map "\e[C" [right])
 354     (define-key map "\e[D" [left])
 355     (define-key map "\e[1~" [home])
 356
 357     (define-key map "\eO2A" [S-up])
 358     (define-key map "\eO2B" [S-down])
 359     (define-key map "\eO2C" [S-right])
 360     (define-key map "\eO2D" [S-left])
 361     (define-key map "\eO2F" [S-end])
 362     (define-key map "\eO2H" [S-home])
 363
 364     (define-key map "\eO5A" [C-up])
 365     (define-key map "\eO5B" [C-down])
 366     (define-key map "\eO5C" [C-right])
 367     (define-key map "\eO5D" [C-left])
 368     (define-key map "\eO5F" [C-end])
 369     (define-key map "\eO5H" [C-home])
 370
 371     (define-key map "\e[11~" [f1])
 372     (define-key map "\e[12~" [f2])
 373     (define-key map "\e[13~" [f3])
 374     (define-key map "\e[14~" [f4])
 375     map)
 376   "Function key map overrides for xterm.")
 377
 378 (defvar xterm-alternatives-map
 379   (let ((map (make-sparse-keymap)))
 380     ;; The terminal initialization C code file might have initialized
 381     ;; function keys F13->F60 from the termcap/terminfo information.
 382     ;; On a PC-style keyboard these keys correspond to
 383     ;; MODIFIER-FUNCTION_KEY, where modifier is S-, C, A-, C-S-.  The code
 384     ;; here substitutes the corresponding definitions in function-key-map.
 385     ;; The mapping from escape sequences to Fn is done in input-decode-map
 386     ;; whereas this here mapping is done in local-function-key-map so that
 387     ;; bindings to f45 still work, in case your keyboard really has an f45
 388     ;; key rather than C-S-f9.
 389     (define-key map [f13] [S-f1])
 390     (define-key map [f14] [S-f2])
 391     (define-key map [f15] [S-f3])
 392     (define-key map [f16] [S-f4])
 393     (define-key map [f17] [S-f5])
 394     (define-key map [f18] [S-f6])
 395     (define-key map [f19] [S-f7])
 396     (define-key map [f20] [S-f8])
 397     (define-key map [f21] [S-f9])
 398     (define-key map [f22] [S-f10])
 399     (define-key map [f23] [S-f11])
 400     (define-key map [f24] [S-f12])
 401
 402     (define-key map [f25] [C-f1])
 403     (define-key map [f26] [C-f2])
 404     (define-key map [f27] [C-f3])
 405     (define-key map [f28] [C-f4])
 406     (define-key map [f29] [C-f5])
 407     (define-key map [f30] [C-f6])
 408     (define-key map [f31] [C-f7])
 409     (define-key map [f32] [C-f8])
 410     (define-key map [f33] [C-f9])
 411     (define-key map [f34] [C-f10])
 412     (define-key map [f35] [C-f11])
 413     (define-key map [f36] [C-f12])
 414
 415     (define-key map [f37] [C-S-f1])
 416     (define-key map [f38] [C-S-f2])
 417     (define-key map [f39] [C-S-f3])
 418     (define-key map [f40] [C-S-f4])
 419     (define-key map [f41] [C-S-f5])
 420     (define-key map [f42] [C-S-f6])
 421     (define-key map [f43] [C-S-f7])
 422     (define-key map [f44] [C-S-f8])
 423     (define-key map [f45] [C-S-f9])
 424     (define-key map [f46] [C-S-f10])
 425     (define-key map [f47] [C-S-f11])
 426     (define-key map [f48] [C-S-f12])
 427
 428     (define-key map [f49] [M-f1])
 429     (define-key map [f50] [M-f2])
 430     (define-key map [f51] [M-f3])
 431     (define-key map [f52] [M-f4])
 432     (define-key map [f53] [M-f5])
 433     (define-key map [f54] [M-f6])
 434     (define-key map [f55] [M-f7])
 435     (define-key map [f56] [M-f8])
 436     (define-key map [f57] [M-f9])
 437     (define-key map [f58] [M-f10])
 438     (define-key map [f59] [M-f11])
 439     (define-key map [f60] [M-f12])
 440
 441     map)
 442   "Keymap of possible alternative meanings for some keys.")
 443
 444 ;; List of terminals for which modify-other-keys has been turned on.
 445 (defvar xterm-modify-other-keys-terminal-list nil)
 446
 447 (defun terminal-init-xterm ()
 448   "Terminal initialization function for xterm."
 449   ;; rxvt terminals sometimes set the TERM variable to "xterm", but
 450   ;; rxvt's keybindings are incompatible with xterm's. It is
 451   ;; better in that case to use rxvt's initializion function.
 452   (if (and (getenv "COLORTERM" (selected-frame))
 453            (string-match "\\`rxvt" (getenv "COLORTERM" (selected-frame))))
 454       (tty-run-terminal-initialization (selected-frame) "rxvt")
 455
 456     (let ((map (copy-keymap xterm-alternatives-map)))
 457       (set-keymap-parent map (keymap-parent local-function-key-map))
 458       (set-keymap-parent local-function-key-map map))
 459
 460     (let ((map (copy-keymap xterm-function-map)))
 461
 462       ;; Use inheritance to let the main keymap override those defaults.
 463       ;; This way we don't override terminfo-derived settings or settings
 464       ;; made in the .emacs file.
 465       (set-keymap-parent map (keymap-parent input-decode-map))
 466       (set-keymap-parent input-decode-map map)))
 467
 468     (xterm-register-default-colors)
 469     ;; This recomputes all the default faces given the colors we've just set up.
 470     (tty-set-up-initial-frame-faces)
 471
 472     (when xterm-mouse-mode
 473       (turn-on-xterm-mouse-tracking-on-terminal
 474        (frame-terminal (selected-frame))))
 475
 476     ;; Try to turn on the modifyOtherKeys feature on modern xterms.
 477     ;; When it is turned on much more key bindings work: things like
 478     ;; C-. C-, etc.
 479     ;; To do that we need to find out if the current terminal supports
 480     ;; modifyOtherKeys. At this time only xterm does.
 481     (let ((coding-system-for-read 'binary)
 482           (chr nil)
 483           (str nil))
 484       ;; Try to find out the type of terminal by sending a "Secondary
 485       ;; Device Attributes (DA)" query.
 486       (send-string-to-terminal "\e[>0c")
 487
 488       ;; The reply should be of the form: \e [ > NUMBER1 ; NUMBER2 ; NUMBER3 c
 489       (when (equal (read-event nil nil 0.1) ?\e)
 490         (when (equal (read-event nil nil 0.1) ?\[)
 491           (while (not (equal (setq chr (read-event nil nil 0.1)) ?c))
 492             (setq str (concat str (string chr))))
 493           (when (string-match ">0;\\([0-9]+\\);0" str)
 494             ;; NUMBER2 is the xterm version number, look for something
 495             ;; greater than 216, the version when modifyOtherKeys was
 496             ;; introduced.
 497             (when (>= (string-to-number
 498                        (substring str (match-beginning 1) (match-end 1))) 216)
 499               ;; Make sure that the modifyOtherKeys state is restored when
 500               ;; suspending, resuming and exiting.
 501               (add-hook 'suspend-hook 'xterm-turn-off-modify-other-keys)
 502               (add-hook 'suspend-resume-hook 'xterm-turn-on-modify-other-keys)
 503               (add-hook 'kill-emacs-hook 'xterm-remove-modify-other-keys)
 504               (add-hook 'delete-frame-hook 'xterm-remove-modify-other-keys)
 505               ;; Add the selected frame to the list of frames that
 506               ;; need to deal with modify-other-keys.
 507               (push (frame-terminal (selected-frame))
 508                     xterm-modify-other-keys-terminal-list)
 509               (xterm-turn-on-modify-other-keys)))))))
 510
 511 ;; Set up colors, for those versions of xterm that support it.
 512 (defvar xterm-standard-colors
 513   ;; The names in the comments taken from XTerm-col.ad in the xterm
 514   ;; distribution, see ftp://dickey.his.com/xterm/.  RGB values are
 515   ;; from rgb.txt.
 516   '(("black"          0 (  0   0   0))  ; black
 517     ("red"            1 (205   0   0))  ; red3
 518     ("green"          2 (  0 205   0))  ; green3
 519     ("yellow"         3 (205 205   0))  ; yellow3
 520     ("blue"           4 (  0   0 238))  ; blue2
 521     ("magenta"        5 (205   0 205))  ; magenta3
 522     ("cyan"           6 (  0 205 205))  ; cyan3
 523     ("white"          7 (229 229 229))  ; gray90
 524     ("brightblack"    8 (127 127 127))  ; gray50
 525     ("brightred"      9 (255   0   0))  ; red
 526     ("brightgreen"   10 (  0 255   0))  ; green
 527     ("brightyellow"  11 (255 255   0))  ; yellow
 528     ("brightblue"    12 (92   92 255))  ; rgb:5c/5c/ff
 529     ("brightmagenta" 13 (255   0 255))  ; magenta
 530     ("brightcyan"    14 (  0 255 255))  ; cyan
 531     ("brightwhite"   15 (255 255 255))) ; white
 532   "Names of 16 standard xterm/aixterm colors, their numbers, and RGB values.")
 533
 534 (defun xterm-rgb-convert-to-16bit (prim)
 535   "Convert an 8-bit primary color value PRIM to a corresponding 16-bit value."
 536   (logior prim (lsh prim 8)))
 537
 538 (defun xterm-register-default-colors ()
 539   "Register the default set of colors for xterm or compatible emulator.
 540
 541 This function registers the number of colors returned by `display-color-cells'
 542 for the currently selected frame.  The first 16 colors are taken from
 543 `xterm-standard-colors', which see, while the rest are computed assuming
 544 either the 88- or 256-color standard color scheme supported by latest
 545 versions of xterm."
 546   (let* ((ncolors (display-color-cells (selected-frame)))
 547          (colors xterm-standard-colors)
 548          (color (car colors)))
 549     (if (> ncolors 0)
 550         ;; Clear the 8 default tty colors registered by startup.el
 551         (tty-color-clear))
 552     ;; Only register as many colors as are supported by the display.
 553     (while (and (> ncolors 0) colors)
 554       (tty-color-define (car color) (cadr color)
 555                         (mapcar 'xterm-rgb-convert-to-16bit
 556                                 (car (cddr color))))
 557       (setq colors (cdr colors)
 558             color (car colors)
 559             ncolors (1- ncolors)))
 560     ;; We've exhausted the colors from `xterm-standard-colors'.  If there
 561     ;; are more colors to support, compute them now.
 562     (when (> ncolors 0)
 563       (cond
 564        ((= ncolors 240) ; 256-color xterm
 565         ;; 216 non-gray colors first
 566         (let ((r 0) (g 0) (b 0))
 567           (while (> ncolors 24)
 568             ;; This and other formulae taken from 256colres.pl and
 569             ;; 88colres.pl in the xterm distribution.
 570             (tty-color-define (format "color-%d" (- 256 ncolors))
 571                               (- 256 ncolors)
 572                               (mapcar 'xterm-rgb-convert-to-16bit
 573                                       (list (if (zerop r) 0 (+ (* r 40) 55))
 574                                             (if (zerop g) 0 (+ (* g 40) 55))
 575                                             (if (zerop b) 0 (+ (* b 40) 55)))))
 576
 577             (setq b (1+ b))
 578             (if (> b 5)
 579                 (setq g (1+ g)
 580                       b 0))
 581             (if (> g 5)
 582                 (setq r (1+ r)
 583                       g 0))
 584             (setq ncolors (1- ncolors))))
 585         ;; Now the 24 gray colors
 586         (while (> ncolors 0)
 587           (setq color (xterm-rgb-convert-to-16bit (+ 8 (* (- 24 ncolors) 10))))
 588           (tty-color-define (format "color-%d" (- 256 ncolors))
 589                             (- 256 ncolors)
 590                             (list color color color))
 591           (setq ncolors (1- ncolors))))
 592        ((= ncolors 72)  ; 88-color xterm
 593         ;; 64 non-gray colors
 594         (let ((levels '(0 139 205 255))
 595               (r 0) (g 0) (b 0))
 596           (while (> ncolors 8)
 597             (tty-color-define (format "color-%d" (- 88 ncolors))
 598                               (- 88 ncolors)
 599                               (mapcar 'xterm-rgb-convert-to-16bit
 600                                       (list (nth r levels)
 601                                             (nth g levels)
 602                                             (nth b levels))))
 603             (setq b (1+ b))
 604             (if (> b 3)
 605                 (setq g (1+ g)
 606                       b 0))
 607             (if (> g 3)
 608                 (setq r (1+ r)
 609                       g 0))
 610             (setq ncolors (1- ncolors))))
 611         ;; Now the 8 gray colors
 612         (while (> ncolors 0)
 613           (setq color (xterm-rgb-convert-to-16bit
 614                        (floor
 615                         (if (= ncolors 8)
 616                             46.36363636
 617                           (+ (* (- 8 ncolors) 23.18181818) 69.54545454)))))
 618           (tty-color-define (format "color-%d" (- 88 ncolors))
 619                             (- 88 ncolors)
 620                             (list color color color))
 621           (setq ncolors (1- ncolors))))
 622        (t (error "Unsupported number of xterm colors (%d)" (+ 16 ncolors)))))
 623     ;; Modifying color mappings means realized faces don't use the
 624     ;; right colors, so clear them.
 625     (clear-face-cache)))
 626
 627 (defun xterm-turn-on-modify-other-keys ()
 628   "Turn on the modifyOtherKeys feature of xterm."
 629   (let ((frame (selected-frame)))
 630     (when (and (frame-live-p frame)
 631                (memq frame xterm-modify-other-keys-terminal-list))
 632       (send-string-to-terminal "\e[>4;1m"))))
 633
 634 (defun xterm-turn-off-modify-other-keys (&optional frame)
 635   "Turn off the modifyOtherKeys feature of xterm."
 636   (setq frame (and frame (selected-frame)))
 637   (when (and (frame-live-p frame)
 638              (memq frame xterm-modify-other-keys-terminal-list))
 639     (send-string-to-terminal "\e[>4m")))
 640
 641 (defun xterm-remove-modify-other-keys (&optional frame)
 642   "Turn off the modifyOtherKeys feature of xterm and remove frame from consideration."
 643   (setq frame (and frame (selected-frame)))
 644   (when (and (frame-live-p frame)
 645              (memq frame xterm-modify-other-keys-terminal-list))
 646     (setq xterm-modify-other-keys-terminal-list
 647           (delq (frame-terminal frame)
 648                 xterm-modify-other-keys-terminal-list))
 649     (send-string-to-terminal "\e[>4m")))
 650
 651 ;; arch-tag: 12e7ebdd-1e6c-4b25-b0f9-35ace25e855a
 652 ;;; xterm.el ends here