;;; xterm.el --- define function key sequences and standard colors for xterm -*- lexical-binding: t -*- ;; Copyright (C) 1995, 2001-2014 Free Software Foundation, Inc. ;; Author: FSF ;; Keywords: terminals ;; This file is part of GNU Emacs. ;; GNU Emacs is free software: you can redistribute it and/or modify ;; it under the terms of the GNU General Public License as published by ;; the Free Software Foundation, either version 3 of the License, or ;; (at your option) any later version. ;; GNU Emacs is distributed in the hope that it will be useful, ;; but WITHOUT ANY WARRANTY; without even the implied warranty of ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ;; GNU General Public License for more details. ;; You should have received a copy of the GNU General Public License ;; along with GNU Emacs. If not, see . ;;; Commentary: ;;; Code: (defgroup xterm nil "XTerm support." :version "24.1" :group 'terminals) (defcustom xterm-extra-capabilities 'check "Whether Xterm supports some additional, more modern, features. If nil, just assume that it does not. If `check', try to check if it does. If a list, assume that the listed features are supported, without checking. The relevant features are: modifyOtherKeys -- if supported, more key bindings work (e.g., \"\\C-,\") reportBackground -- if supported, Xterm reports its background color" :version "24.1" :group 'xterm :type '(choice (const :tag "No" nil) (const :tag "Check" check) ;; NOTE: If you add entries here, make sure to update ;; `tocheck-capabilities' in `terminal-init-xterm' as well. (set (const :tag "modifyOtherKeys support" modifyOtherKeys) (const :tag "report background" reportBackground)))) (defvar xterm-function-map (let ((map (make-sparse-keymap))) ;; xterm from X.org 6.8.2 uses these key definitions. (define-key map "\eOP" [f1]) (define-key map "\eOQ" [f2]) (define-key map "\eOR" [f3]) (define-key map "\eOS" [f4]) (define-key map "\e[15~" [f5]) (define-key map "\e[17~" [f6]) (define-key map "\e[18~" [f7]) (define-key map "\e[19~" [f8]) (define-key map "\e[20~" [f9]) (define-key map "\e[21~" [f10]) (define-key map "\e[23~" [f11]) (define-key map "\e[24~" [f12]) (define-key map "\eO2P" [S-f1]) (define-key map "\eO2Q" [S-f2]) (define-key map "\eO2R" [S-f3]) (define-key map "\eO2S" [S-f4]) (define-key map "\e[1;2P" [S-f1]) (define-key map "\e[1;2Q" [S-f2]) (define-key map "\e[1;2R" [S-f3]) (define-key map "\e[1;2S" [S-f4]) (define-key map "\e[15;2~" [S-f5]) (define-key map "\e[17;2~" [S-f6]) (define-key map "\e[18;2~" [S-f7]) (define-key map "\e[19;2~" [S-f8]) (define-key map "\e[20;2~" [S-f9]) (define-key map "\e[21;2~" [S-f10]) (define-key map "\e[23;2~" [S-f11]) (define-key map "\e[24;2~" [S-f12]) (define-key map "\eO5P" [C-f1]) (define-key map "\eO5Q" [C-f2]) (define-key map "\eO5R" [C-f3]) (define-key map "\eO5S" [C-f4]) (define-key map "\e[15;5~" [C-f5]) (define-key map "\e[17;5~" [C-f6]) (define-key map "\e[18;5~" [C-f7]) (define-key map "\e[19;5~" [C-f8]) (define-key map "\e[20;5~" [C-f9]) (define-key map "\e[21;5~" [C-f10]) (define-key map "\e[23;5~" [C-f11]) (define-key map "\e[24;5~" [C-f12]) (define-key map "\eO6P" [C-S-f1]) (define-key map "\eO6Q" [C-S-f2]) (define-key map "\eO6R" [C-S-f3]) (define-key map "\eO6S" [C-S-f4]) (define-key map "\e[15;6~" [C-S-f5]) (define-key map "\e[17;6~" [C-S-f6]) (define-key map "\e[18;6~" [C-S-f7]) (define-key map "\e[19;6~" [C-S-f8]) (define-key map "\e[20;6~" [C-S-f9]) (define-key map "\e[21;6~" [C-S-f10]) (define-key map "\e[23;6~" [C-S-f11]) (define-key map "\e[24;6~" [C-S-f12]) (define-key map "\eO3P" [M-f1]) (define-key map "\eO3Q" [M-f2]) (define-key map "\eO3R" [M-f3]) (define-key map "\eO3S" [M-f4]) (define-key map "\e[15;3~" [M-f5]) (define-key map "\e[17;3~" [M-f6]) (define-key map "\e[18;3~" [M-f7]) (define-key map "\e[19;3~" [M-f8]) (define-key map "\e[20;3~" [M-f9]) (define-key map "\e[21;3~" [M-f10]) (define-key map "\e[23;3~" [M-f11]) (define-key map "\e[24;3~" [M-f12]) (define-key map "\eO4P" [M-S-f1]) (define-key map "\eO4Q" [M-S-f2]) (define-key map "\eO4R" [M-S-f3]) (define-key map "\eO4S" [M-S-f4]) (define-key map "\e[15;4~" [M-S-f5]) (define-key map "\e[17;4~" [M-S-f6]) (define-key map "\e[18;4~" [M-S-f7]) (define-key map "\e[19;4~" [M-S-f8]) (define-key map "\e[20;4~" [M-S-f9]) (define-key map "\e[21;4~" [M-S-f10]) (define-key map "\e[23;4~" [M-S-f11]) (define-key map "\e[24;4~" [M-S-f12]) (define-key map "\eOA" [up]) (define-key map "\eOB" [down]) (define-key map "\eOC" [right]) (define-key map "\eOD" [left]) (define-key map "\eOF" [end]) (define-key map "\eOH" [home]) (define-key map "\e[1;2A" [S-up]) (define-key map "\e[1;2B" [S-down]) (define-key map "\e[1;2C" [S-right]) (define-key map "\e[1;2D" [S-left]) (define-key map "\e[1;2F" [S-end]) (define-key map "\e[1;2H" [S-home]) (define-key map "\e[1;4A" [M-S-up]) (define-key map "\e[1;4B" [M-S-down]) (define-key map "\e[1;4C" [M-S-right]) (define-key map "\e[1;4D" [M-S-left]) (define-key map "\e[1;4F" [M-S-end]) (define-key map "\e[1;4H" [M-S-home]) (define-key map "\e[1;5A" [C-up]) (define-key map "\e[1;5B" [C-down]) (define-key map "\e[1;5C" [C-right]) (define-key map "\e[1;5D" [C-left]) (define-key map "\e[1;5F" [C-end]) (define-key map "\e[1;5H" [C-home]) (define-key map "\e[1;6A" [C-S-up]) (define-key map "\e[1;6B" [C-S-down]) (define-key map "\e[1;6C" [C-S-right]) (define-key map "\e[1;6D" [C-S-left]) (define-key map "\e[1;6F" [C-S-end]) (define-key map "\e[1;6H" [C-S-home]) (define-key map "\e[1;7A" [C-M-up]) (define-key map "\e[1;7B" [C-M-down]) (define-key map "\e[1;7C" [C-M-right]) (define-key map "\e[1;7D" [C-M-left]) (define-key map "\e[1;7F" [C-M-end]) (define-key map "\e[1;7H" [C-M-home]) (define-key map "\e[1;8A" [C-M-S-up]) (define-key map "\e[1;8B" [C-M-S-down]) (define-key map "\e[1;8C" [C-M-S-right]) (define-key map "\e[1;8D" [C-M-S-left]) (define-key map "\e[1;8F" [C-M-S-end]) (define-key map "\e[1;8H" [C-M-S-home]) (define-key map "\e[1;3A" [M-up]) (define-key map "\e[1;3B" [M-down]) (define-key map "\e[1;3C" [M-right]) (define-key map "\e[1;3D" [M-left]) (define-key map "\e[1;3F" [M-end]) (define-key map "\e[1;3H" [M-home]) (define-key map "\e[2~" [insert]) (define-key map "\e[3~" [delete]) (define-key map "\e[5~" [prior]) (define-key map "\e[6~" [next]) (define-key map "\e[2;2~" [S-insert]) (define-key map "\e[3;2~" [S-delete]) (define-key map "\e[5;2~" [S-prior]) (define-key map "\e[6;2~" [S-next]) (define-key map "\e[2;4~" [M-S-insert]) (define-key map "\e[3;4~" [M-S-delete]) (define-key map "\e[5;4~" [M-S-prior]) (define-key map "\e[6;4~" [M-S-next]) (define-key map "\e[2;5~" [C-insert]) (define-key map "\e[3;5~" [C-delete]) (define-key map "\e[5;5~" [C-prior]) (define-key map "\e[6;5~" [C-next]) (define-key map "\e[2;6~" [C-S-insert]) (define-key map "\e[3;6~" [C-S-delete]) (define-key map "\e[5;6~" [C-S-prior]) (define-key map "\e[6;6~" [C-S-next]) (define-key map "\e[2;7~" [C-M-insert]) (define-key map "\e[3;7~" [C-M-delete]) (define-key map "\e[5;7~" [C-M-prior]) (define-key map "\e[6;7~" [C-M-next]) (define-key map "\e[2;8~" [C-M-S-insert]) (define-key map "\e[3;8~" [C-M-S-delete]) (define-key map "\e[5;8~" [C-M-S-prior]) (define-key map "\e[6;8~" [C-M-S-next]) (define-key map "\e[2;3~" [M-insert]) (define-key map "\e[3;3~" [M-delete]) (define-key map "\e[5;3~" [M-prior]) (define-key map "\e[6;3~" [M-next]) (define-key map "\e[4~" [select]) (define-key map "\e[29~" [print]) (define-key map "\eOj" [kp-multiply]) (define-key map "\eOk" [kp-add]) (define-key map "\eOl" [kp-separator]) (define-key map "\eOm" [kp-subtract]) (define-key map "\eOo" [kp-divide]) (define-key map "\eOp" [kp-0]) (define-key map "\eOq" [kp-1]) (define-key map "\eOr" [kp-2]) (define-key map "\eOs" [kp-3]) (define-key map "\eOt" [kp-4]) (define-key map "\eOu" [kp-5]) (define-key map "\eOv" [kp-6]) (define-key map "\eOw" [kp-7]) (define-key map "\eOx" [kp-8]) (define-key map "\eOy" [kp-9]) ;; These keys are available in xterm starting from version 216 ;; if the modifyOtherKeys resource is set to 1. (dolist (bind '((5 9 [C-tab]) (5 13 [C-return]) (5 39 [?\C-\']) (5 44 [?\C-,]) (5 45 [?\C--]) (5 46 [?\C-.]) (5 47 [?\C-/]) (5 48 [?\C-0]) (5 49 [?\C-1]) ;; Not all C-DIGIT keys have a distinct binding. (5 57 [?\C-9]) (5 59 [?\C-\;]) (5 61 [?\C-=]) (5 92 [?\C-\\]) (6 33 [?\C-!]) (6 34 [?\C-\"]) (6 35 [?\C-#]) (6 36 [?\C-$]) (6 37 [?\C-%]) (6 38 [?\C-&]) (6 40 [?\C-\(]) (6 41 [?\C-\)]) (6 42 [?\C-*]) (6 43 [?\C-+]) (6 58 [?\C-:]) (6 60 [?\C-<]) (6 62 [?\C->]) (6 63 [(control ??)]) ;; These are the strings emitted for various C-M- ;; combinations for keyboards whose Meta and Alt ;; modifiers are on the same key (usually labeled "Alt"). (13 9 [C-M-tab]) (13 13 [C-M-return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control meta ??)]) (7 9 [C-M-tab]) (7 13 [C-M-return]) (7 32 [?\C-\M-\s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control meta ??)]) (2 9 [S-tab]) (2 13 [S-return]) (6 9 [C-S-tab]) (6 13 [C-S-return]))) (define-key map (format "\e[27;%d;%d~" (nth 0 bind) (nth 1 bind)) (nth 2 bind)) ;; For formatOtherKeys=1, the sequence is a bit shorter (bug#13839). (define-key map (format "\e[%d;%du" (nth 1 bind) (nth 0 bind)) (nth 2 bind))) ;; Other versions of xterm might emit these. (define-key map "\e[A" [up]) (define-key map "\e[B" [down]) (define-key map "\e[C" [right]) (define-key map "\e[D" [left]) (define-key map "\e[1~" [home]) (define-key map "\eO2A" [S-up]) (define-key map "\eO2B" [S-down]) (define-key map "\eO2C" [S-right]) (define-key map "\eO2D" [S-left]) (define-key map "\eO2F" [S-end]) (define-key map "\eO2H" [S-home]) (define-key map "\eO5A" [C-up]) (define-key map "\eO5B" [C-down]) (define-key map "\eO5C" [C-right]) (define-key map "\eO5D" [C-left]) (define-key map "\eO5F" [C-end]) (define-key map "\eO5H" [C-home]) (define-key map "\e[11~" [f1]) (define-key map "\e[12~" [f2]) (define-key map "\e[13~" [f3]) (define-key map "\e[14~" [f4]) map) "Function key map overrides for xterm.") (defvar xterm-alternatives-map (let ((map (make-sparse-keymap))) ;; The terminal initialization C code file might have initialized ;; function keys F13->F60 from the termcap/terminfo information. ;; On a PC-style keyboard these keys correspond to ;; MODIFIER-FUNCTION_KEY, where modifier is S-, C, A-, C-S-. The code ;; here substitutes the corresponding definitions in function-key-map. ;; The mapping from escape sequences to Fn is done in input-decode-map ;; whereas this here mapping is done in local-function-key-map so that ;; bindings to f45 still work, in case your keyboard really has an f45 ;; key rather than C-S-f9. (define-key map [f13] [S-f1]) (define-key map [f14] [S-f2]) (define-key map [f15] [S-f3]) (define-key map [f16] [S-f4]) (define-key map [f17] [S-f5]) (define-key map [f18] [S-f6]) (define-key map [f19] [S-f7]) (define-key map [f20] [S-f8]) (define-key map [f21] [S-f9]) (define-key map [f22] [S-f10]) (define-key map [f23] [S-f11]) (define-key map [f24] [S-f12]) (define-key map [f25] [C-f1]) (define-key map [f26] [C-f2]) (define-key map [f27] [C-f3]) (define-key map [f28] [C-f4]) (define-key map [f29] [C-f5]) (define-key map [f30] [C-f6]) (define-key map [f31] [C-f7]) (define-key map [f32] [C-f8]) (define-key map [f33] [C-f9]) (define-key map [f34] [C-f10]) (define-key map [f35] [C-f11]) (define-key map [f36] [C-f12]) (define-key map [f37] [C-S-f1]) (define-key map [f38] [C-S-f2]) (define-key map [f39] [C-S-f3]) (define-key map [f40] [C-S-f4]) (define-key map [f41] [C-S-f5]) (define-key map [f42] [C-S-f6]) (define-key map [f43] [C-S-f7]) (define-key map [f44] [C-S-f8]) (define-key map [f45] [C-S-f9]) (define-key map [f46] [C-S-f10]) (define-key map [f47] [C-S-f11]) (define-key map [f48] [C-S-f12]) (define-key map [f49] [M-f1]) (define-key map [f50] [M-f2]) (define-key map [f51] [M-f3]) (define-key map [f52] [M-f4]) (define-key map [f53] [M-f5]) (define-key map [f54] [M-f6]) (define-key map [f55] [M-f7]) (define-key map [f56] [M-f8]) (define-key map [f57] [M-f9]) (define-key map [f58] [M-f10]) (define-key map [f59] [M-f11]) (define-key map [f60] [M-f12]) map) "Keymap of possible alternative meanings for some keys.") ;; List of terminals for which modify-other-keys has been turned on. (defvar xterm-modify-other-keys-terminal-list nil) (defun xterm--report-background-handler () (let ((str "") chr) ;; The reply should be: \e ] 11 ; rgb: NUMBER1 / NUMBER2 / NUMBER3 \e \\ (while (and (setq chr (read-event nil nil 2)) (not (equal chr ?\\))) (setq str (concat str (string chr)))) (when (string-match "rgb:\\([a-f0-9]+\\)/\\([a-f0-9]+\\)/\\([a-f0-9]+\\)" str) (let ((recompute-faces (xterm-maybe-set-dark-background-mode (string-to-number (match-string 1 str) 16) (string-to-number (match-string 2 str) 16) (string-to-number (match-string 3 str) 16)))) ;; Recompute faces here in case the background mode was ;; set to dark. We used to call ;; `tty-set-up-initial-frame-faces' only once, but that ;; caused the light background faces to be computed ;; incorrectly. See: ;; http://permalink.gmane.org/gmane.emacs.devel/119627 (when recompute-faces (tty-set-up-initial-frame-faces)))))) (defun xterm--version-handler () (let ((str "") chr) ;; The reply should be: \e [ > NUMBER1 ; NUMBER2 ; NUMBER3 c ;; If the timeout is completely removed for read-event, this ;; might hang for terminals that pretend to be xterm, but don't ;; respond to this escape sequence. RMS' opinion was to remove ;; it completely. That might be right, but let's first try to ;; see if by using a longer timeout we get rid of most issues. (while (and (setq chr (read-event nil nil 2)) (not (equal chr ?c))) (setq str (concat str (string chr)))) ;; Since xterm-280, the terminal type (NUMBER1) is now 41 instead of 0. (when (string-match "\\([0-9]+\\);\\([0-9]+\\);0" str) (let ((version (string-to-number (match-string 2 str)))) (when (and (> version 2000) (equal (match-string 1 str) "1")) ;; Hack attack! bug#16988: gnome-terminal reports "1;NNNN;0" ;; with a large NNNN but is based on a rather old xterm code. ;; Gnome terminal 3.6.1 reports 1;3406;0 ;; Gnome terminal 2.32.1 reports 1;2802;0 (setq version 200)) (when (equal (match-string 1 str) "83") ;; `screen' (which returns 83;40003;0) seems to also lack support for ;; some of these (bug#17607). (setq version 240)) ;; If version is 242 or higher, assume the xterm supports ;; reporting the background color (TODO: maybe earlier ;; versions do too...) (when (>= version 242) (xterm--query "\e]11;?\e\\" '(("\e]11;" . xterm--report-background-handler)))) ;; If version is 216 (the version when modifyOtherKeys was ;; introduced) or higher, initialize the ;; modifyOtherKeys support. (when (>= version 216) (terminal-init-xterm-modify-other-keys)))))) (defun xterm--query (query handlers) "Send QUERY string to the terminal and watch for a response. HANDLERS is an alist with elements of the form (STRING . FUNCTION). We run the first FUNCTION whose STRING matches the input events." ;; We used to query synchronously, but the need to use `discard-input' is ;; rather annoying (bug#6758). Maybe we could always use the asynchronous ;; approach, but it's less tested. ;; FIXME: Merge the two branches. (if (input-pending-p) (progn (dolist (handler handlers) (define-key input-decode-map (car handler) (lambda (&optional _prompt) ;; Unregister the handler, since we don't expect further answers. (dolist (handler handlers) (define-key input-decode-map (car handler) nil)) (funcall (cdr handler)) []))) (send-string-to-terminal query)) ;; Pending input can be mistakenly returned by the calls to ;; read-event below. Discard it. (send-string-to-terminal query) (while handlers (let ((handler (pop handlers)) (i 0)) (while (and (< i (length (car handler))) (let ((evt (read-event nil nil 2))) (or (eq evt (aref (car handler) i)) (progn (if evt (push evt unread-command-events)) nil)))) (setq i (1+ i))) (if (= i (length (car handler))) (progn (setq handlers nil) (funcall (cdr handler))) (while (> i 0) (push (aref (car handler) (setq i (1- i))) unread-command-events))))))) (defun terminal-init-xterm () "Terminal initialization function for xterm." ;; rxvt terminals sometimes set the TERM variable to "xterm", but ;; rxvt's keybindings are incompatible with xterm's. It is ;; better in that case to use rxvt's initialization function. (if (and (getenv "COLORTERM" (selected-frame)) (string-match "\\`rxvt" (getenv "COLORTERM" (selected-frame)))) (tty-run-terminal-initialization (selected-frame) "rxvt") (let ((map (copy-keymap xterm-alternatives-map))) (set-keymap-parent map (keymap-parent local-function-key-map)) (set-keymap-parent local-function-key-map map)) (let ((map (copy-keymap xterm-function-map))) ;; Use inheritance to let the main keymap override those defaults. ;; This way we don't override terminfo-derived settings or settings ;; made in the init file. (set-keymap-parent map (keymap-parent input-decode-map)) (set-keymap-parent input-decode-map map))) (xterm-register-default-colors) (tty-set-up-initial-frame-faces) (if (eq xterm-extra-capabilities 'check) ;; Try to find out the type of terminal by sending a "Secondary ;; Device Attributes (DA)" query. (xterm--query "\e[>0c" ;; Some terminals (like OS X's Terminal.app) respond to ;; this query as if it were a "Primary Device Attributes" ;; query instead, so we should handle that too. '(("\e[?" . xterm--version-handler) ("\e[>" . xterm--version-handler))) (when (memq 'reportBackground xterm-extra-capabilities) (xterm--query "\e]11;?\e\\" '(("\e]11;" . xterm--report-background-handler)))) (when (memq 'modifyOtherKeys xterm-extra-capabilities) (terminal-init-xterm-modify-other-keys))) (run-hooks 'terminal-init-xterm-hook)) (defun terminal-init-xterm-modify-other-keys () "Terminal initialization for xterm's modifyOtherKeys support." ;; Make sure that the modifyOtherKeys state is restored when ;; suspending, resuming and exiting. (add-hook 'suspend-hook 'xterm-turn-off-modify-other-keys) (add-hook 'suspend-resume-hook 'xterm-turn-on-modify-other-keys) (add-hook 'kill-emacs-hook 'xterm-remove-modify-other-keys) (add-hook 'delete-terminal-functions 'xterm-remove-modify-other-keys) ;; Add the selected frame to the list of frames that ;; need to deal with modify-other-keys. (push (frame-terminal) xterm-modify-other-keys-terminal-list) (xterm-turn-on-modify-other-keys)) ;; Set up colors, for those versions of xterm that support it. (defvar xterm-standard-colors ;; The names in the comments taken from XTerm-col.ad in the xterm ;; distribution, see ftp://dickey.his.com/xterm/. RGB values are ;; from rgb.txt. '(("black" 0 ( 0 0 0)) ; black ("red" 1 (205 0 0)) ; red3 ("green" 2 ( 0 205 0)) ; green3 ("yellow" 3 (205 205 0)) ; yellow3 ("blue" 4 ( 0 0 238)) ; blue2 ("magenta" 5 (205 0 205)) ; magenta3 ("cyan" 6 ( 0 205 205)) ; cyan3 ("white" 7 (229 229 229)) ; gray90 ("brightblack" 8 (127 127 127)) ; gray50 ("brightred" 9 (255 0 0)) ; red ("brightgreen" 10 ( 0 255 0)) ; green ("brightyellow" 11 (255 255 0)) ; yellow ("brightblue" 12 (92 92 255)) ; rgb:5c/5c/ff ("brightmagenta" 13 (255 0 255)) ; magenta ("brightcyan" 14 ( 0 255 255)) ; cyan ("brightwhite" 15 (255 255 255))) ; white "Names of 16 standard xterm/aixterm colors, their numbers, and RGB values.") (defun xterm-rgb-convert-to-16bit (prim) "Convert an 8-bit primary color value PRIM to a corresponding 16-bit value." (logior prim (lsh prim 8))) (defun xterm-register-default-colors () "Register the default set of colors for xterm or compatible emulator. This function registers the number of colors returned by `display-color-cells' for the currently selected frame. The first 16 colors are taken from `xterm-standard-colors', which see, while the rest are computed assuming either the 88- or 256-color standard color scheme supported by latest versions of xterm." (let* ((ncolors (display-color-cells (selected-frame))) (colors xterm-standard-colors) (color (car colors))) (if (> ncolors 0) ;; Clear the 8 default tty colors registered by startup.el (tty-color-clear)) ;; Only register as many colors as are supported by the display. (while (and (> ncolors 0) colors) (tty-color-define (car color) (cadr color) (mapcar 'xterm-rgb-convert-to-16bit (car (cddr color)))) (setq colors (cdr colors) color (car colors) ncolors (1- ncolors))) ;; We've exhausted the colors from `xterm-standard-colors'. If there ;; are more colors to support, compute them now. (when (> ncolors 0) (cond ((= ncolors 240) ; 256-color xterm ;; 216 non-gray colors first (let ((r 0) (g 0) (b 0)) (while (> ncolors 24) ;; This and other formulas taken from 256colres.pl and ;; 88colres.pl in the xterm distribution. (tty-color-define (format "color-%d" (- 256 ncolors)) (- 256 ncolors) (mapcar 'xterm-rgb-convert-to-16bit (list (if (zerop r) 0 (+ (* r 40) 55)) (if (zerop g) 0 (+ (* g 40) 55)) (if (zerop b) 0 (+ (* b 40) 55))))) (setq b (1+ b)) (if (> b 5) (setq g (1+ g) b 0)) (if (> g 5) (setq r (1+ r) g 0)) (setq ncolors (1- ncolors)))) ;; Now the 24 gray colors (while (> ncolors 0) (setq color (xterm-rgb-convert-to-16bit (+ 8 (* (- 24 ncolors) 10)))) (tty-color-define (format "color-%d" (- 256 ncolors)) (- 256 ncolors) (list color color color)) (setq ncolors (1- ncolors)))) ((= ncolors 72) ; 88-color xterm ;; 64 non-gray colors (let ((levels '(0 139 205 255)) (r 0) (g 0) (b 0)) (while (> ncolors 8) (tty-color-define (format "color-%d" (- 88 ncolors)) (- 88 ncolors) (mapcar 'xterm-rgb-convert-to-16bit (list (nth r levels) (nth g levels) (nth b levels)))) (setq b (1+ b)) (if (> b 3) (setq g (1+ g) b 0)) (if (> g 3) (setq r (1+ r) g 0)) (setq ncolors (1- ncolors)))) ;; Now the 8 gray colors (while (> ncolors 0) (setq color (xterm-rgb-convert-to-16bit (floor (if (= ncolors 8) 46.36363636 (+ (* (- 8 ncolors) 23.18181818) 69.54545454))))) (tty-color-define (format "color-%d" (- 88 ncolors)) (- 88 ncolors) (list color color color)) (setq ncolors (1- ncolors)))) (t (error "Unsupported number of xterm colors (%d)" (+ 16 ncolors))))) ;; Modifying color mappings means realized faces don't use the ;; right colors, so clear them. (clear-face-cache))) (defun xterm-turn-on-modify-other-keys () "Turn the modifyOtherKeys feature of xterm back on." (let ((terminal (frame-terminal))) (when (and (terminal-live-p terminal) (memq terminal xterm-modify-other-keys-terminal-list)) (send-string-to-terminal "\e[>4;1m" terminal)))) (defun xterm-turn-off-modify-other-keys (&optional frame) "Temporarily turn off the modifyOtherKeys feature of xterm." (let ((terminal (when frame (frame-terminal frame)))) (when (and (terminal-live-p terminal) (memq terminal xterm-modify-other-keys-terminal-list)) (send-string-to-terminal "\e[>4m" terminal)))) (defun xterm-remove-modify-other-keys (&optional terminal) "Turn off the modifyOtherKeys feature of xterm for good." (setq terminal (or terminal (frame-terminal))) (when (and (terminal-live-p terminal) (memq terminal xterm-modify-other-keys-terminal-list)) (setq xterm-modify-other-keys-terminal-list (delq terminal xterm-modify-other-keys-terminal-list)) (send-string-to-terminal "\e[>4m" terminal))) (defun xterm-maybe-set-dark-background-mode (redc greenc bluec) ;; Use the heuristic in `frame-set-background-mode' to decide if a ;; frame is dark. (when (< (+ redc greenc bluec) (* .6 (+ 65535 65535 65535))) (set-terminal-parameter nil 'background-mode 'dark) t)) (provide 'xterm) ;;; xterm.el ends here