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;;; iso-ascii.el --- set up char tables for ISO 8859/1 on ASCII terminals -*- lexical-binding: t -*-
;; Copyright (C) 1987, 1995, 1998, 2001-2020 Free Software Foundation,
;; Inc.
;; Author: Howard Gayle
;; Maintainer: emacs-devel@gnu.org
;; Keywords: i18n
;; 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 <https://www.gnu.org/licenses/>.
;;; Commentary:
;; Written by Howard Gayle. See display-table.el for details.
;; This code sets up to display ISO 8859/1 characters on plain
;; ASCII terminals. The display strings for the characters are
;; more-or-less based on TeX.
;;; Code:
(require 'disp-table)
(defgroup iso-ascii nil
"Set up char tables for ISO 8859/1 on ASCII terminals."
:prefix "iso-ascii-"
:group 'i18n)
(defcustom iso-ascii-convenient nil
"Non-nil means `iso-ascii' should aim for convenience, not precision."
:type 'boolean)
(defvar iso-ascii-display-table (make-display-table)
"Display table used for ISO-ASCII mode.")
(defvar iso-ascii-standard-display-table nil
"Display table used when not in ISO-ASCII mode.")
;; Don't alter iso-ascii-standard-display-table if this file is loaded again,
;; or even by using C-M-x on any of the expressions.
(unless iso-ascii-standard-display-table
(setq iso-ascii-standard-display-table
standard-display-table))
(defun iso-ascii-display (code string &optional convenient-string)
(if iso-ascii-convenient
(setq string (or convenient-string string))
(setq string (concat "{" string "}")))
;; unibyte
(aset iso-ascii-display-table code string)
;; multibyte
(aset iso-ascii-display-table (make-char 'latin-iso8859-1 (- code 128))
string))
(iso-ascii-display 160 "_" " ") ; NBSP (no-break space)
(iso-ascii-display 161 "!") ; inverted exclamation mark
(iso-ascii-display 162 "c") ; cent sign
(iso-ascii-display 163 "GBP") ; pound sign
(iso-ascii-display 164 "$") ; general currency sign
(iso-ascii-display 165 "JPY") ; yen sign
(iso-ascii-display 166 "|") ; broken vertical line
(iso-ascii-display 167 "S" "(S)") ; section sign
(iso-ascii-display 168 "\"") ; diaeresis
(iso-ascii-display 169 "C" "(C)") ; copyright sign
(iso-ascii-display 170 "_a") ; ordinal indicator, feminine
(iso-ascii-display 171 "<<") ; left angle quotation mark
(iso-ascii-display 172 "~") ; not sign
(iso-ascii-display 173 "-") ; soft hyphen
(iso-ascii-display 174 "R" "(R)") ; registered sign
(iso-ascii-display 175 "=") ; macron
(iso-ascii-display 176 "o") ; degree sign
(iso-ascii-display 177 "+-") ; plus or minus sign
(iso-ascii-display 178 "2") ; superscript two
(iso-ascii-display 179 "3") ; superscript three
(iso-ascii-display 180 "'") ; acute accent
(iso-ascii-display 181 "u") ; micro sign
(iso-ascii-display 182 "P" "(P)") ; pilcrow
(iso-ascii-display 183 ".") ; middle dot
(iso-ascii-display 184 ",") ; cedilla
(iso-ascii-display 185 "1") ; superscript one
(iso-ascii-display 186 "_o") ; ordinal indicator, masculine
(iso-ascii-display 187 ">>") ; right angle quotation mark
(iso-ascii-display 188 "1/4") ; fraction one-quarter
(iso-ascii-display 189 "1/2") ; fraction one-half
(iso-ascii-display 190 "3/4") ; fraction three-quarters
(iso-ascii-display 191 "?") ; inverted question mark
(iso-ascii-display 192 "`A") ; A with grave accent
(iso-ascii-display 193 "'A") ; A with acute accent
(iso-ascii-display 194 "^A") ; A with circumflex accent
(iso-ascii-display 195 "~A") ; A with tilde
(iso-ascii-display 196 "\"A") ; A with diaeresis or umlaut mark
(iso-ascii-display 197 "AA") ; A with ring
(iso-ascii-display 198 "AE") ; AE diphthong
(iso-ascii-display 199 ",C") ; C with cedilla
(iso-ascii-display 200 "`E") ; E with grave accent
(iso-ascii-display 201 "'E") ; E with acute accent
(iso-ascii-display 202 "^E") ; E with circumflex accent
(iso-ascii-display 203 "\"E") ; E with diaeresis or umlaut mark
(iso-ascii-display 204 "`I") ; I with grave accent
(iso-ascii-display 205 "'I") ; I with acute accent
(iso-ascii-display 206 "^I") ; I with circumflex accent
(iso-ascii-display 207 "\"I") ; I with diaeresis or umlaut mark
(iso-ascii-display 208 "-D") ; D with stroke, Icelandic eth
(iso-ascii-display 209 "~N") ; N with tilde
(iso-ascii-display 210 "`O") ; O with grave accent
(iso-ascii-display 211 "'O") ; O with acute accent
(iso-ascii-display 212 "^O") ; O with circumflex accent
(iso-ascii-display 213 "~O") ; O with tilde
(iso-ascii-display 214 "\"O") ; O with diaeresis or umlaut mark
(iso-ascii-display 215 "x") ; multiplication sign
(iso-ascii-display 216 "/O") ; O with slash
(iso-ascii-display 217 "`U") ; U with grave accent
(iso-ascii-display 218 "'U") ; U with acute accent
(iso-ascii-display 219 "^U") ; U with circumflex accent
(iso-ascii-display 220 "\"U") ; U with diaeresis or umlaut mark
(iso-ascii-display 221 "'Y") ; Y with acute accent
(iso-ascii-display 222 "TH") ; capital thorn, Icelandic
(iso-ascii-display 223 "ss") ; small sharp s, German
(iso-ascii-display 224 "`a") ; a with grave accent
(iso-ascii-display 225 "'a") ; a with acute accent
(iso-ascii-display 226 "^a") ; a with circumflex accent
(iso-ascii-display 227 "~a") ; a with tilde
(iso-ascii-display 228 "\"a") ; a with diaeresis or umlaut mark
(iso-ascii-display 229 "aa") ; a with ring
(iso-ascii-display 230 "ae") ; ae diphthong
(iso-ascii-display 231 ",c") ; c with cedilla
(iso-ascii-display 232 "`e") ; e with grave accent
(iso-ascii-display 233 "'e") ; e with acute accent
(iso-ascii-display 234 "^e") ; e with circumflex accent
(iso-ascii-display 235 "\"e") ; e with diaeresis or umlaut mark
(iso-ascii-display 236 "`i") ; i with grave accent
(iso-ascii-display 237 "'i") ; i with acute accent
(iso-ascii-display 238 "^i") ; i with circumflex accent
(iso-ascii-display 239 "\"i") ; i with diaeresis or umlaut mark
(iso-ascii-display 240 "-d") ; d with stroke, Icelandic eth
(iso-ascii-display 241 "~n") ; n with tilde
(iso-ascii-display 242 "`o") ; o with grave accent
(iso-ascii-display 243 "'o") ; o with acute accent
(iso-ascii-display 244 "^o") ; o with circumflex accent
(iso-ascii-display 245 "~o") ; o with tilde
(iso-ascii-display 246 "\"o") ; o with diaeresis or umlaut mark
(iso-ascii-display 247 "/") ; division sign
(iso-ascii-display 248 "/o") ; o with slash
(iso-ascii-display 249 "`u") ; u with grave accent
(iso-ascii-display 250 "'u") ; u with acute accent
(iso-ascii-display 251 "^u") ; u with circumflex accent
(iso-ascii-display 252 "\"u") ; u with diaeresis or umlaut mark
(iso-ascii-display 253 "'y") ; y with acute accent
(iso-ascii-display 254 "th") ; small thorn, Icelandic
(iso-ascii-display 255 "\"y") ; small y with diaeresis or umlaut mark
(define-minor-mode iso-ascii-mode
"Toggle ISO-ASCII mode."
:variable ((eq standard-display-table iso-ascii-display-table)
. (lambda (v)
(setq standard-display-table
(cond
(v iso-ascii-display-table)
((eq standard-display-table iso-ascii-display-table)
iso-ascii-standard-display-table)
(t standard-display-table))))))
(provide 'iso-ascii)
;;; iso-ascii.el ends here
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