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;;; cyrillic.el --- support for Cyrillic -*- coding: utf-8; -*-
;; Copyright (C) 1997-1998, 2001-2015 Free Software Foundation, Inc.
;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
;; 2005, 2006, 2007, 2008, 2009, 2010, 2011
;; National Institute of Advanced Industrial Science and Technology (AIST)
;; Registration Number H14PRO021
;; Copyright (C) 2003
;; National Institute of Advanced Industrial Science and Technology (AIST)
;; Registration Number H13PRO009
;; Author: Kenichi Handa <handa@etl.go.jp>
;; Keywords: multilingual, Cyrillic, 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 <http://www.gnu.org/licenses/>.
;;; Commentary:
;; The character set ISO8859-5 is supported. KOI-8 and ALTERNATIVNYJ
;; are converted to Unicode internally. See
;; <URL:http://www.ecma.ch/ecma1/STAND/ECMA-113.HTM>. For more info
;; on Cyrillic charsets, see
;; <URL:http://czyborra.com/charsets/cyrillic.html>. The KOI and
;; Alternativnyj coding systems should live in code-pages.el, but
;; they've always been preloaded and the coding system autoload
;; mechanism didn't get accepted, so they have to stay here and
;; duplicate code-pages stuff.
;; Note that 8859-5 maps directly onto the Unicode Cyrillic block,
;; apart from codepoints 160 (NBSP, c.f. U+0400), 173 (soft hyphen,
;; c.f. U+04OD) and 253 (section sign, c.f U+045D). The KOI-8 and
;; Alternativnyj coding systems encode both 8859-5 and Unicode.
;; ucs-tables.el provides unification for cyrillic-iso-8bit.
;; Customizing `utf-fragment-on-decoding' allows decoding characters
;; from KOI and Alternativnyj into 8859-5 where that's possible.
;; cyrillic-iso8859-5 characters take half as much space in the buffer
;; as the mule-unicode-0100-24ff equivalents, though that's probably
;; not normally a big deal.
;;; Code:
;; Cyrillic (general)
;; ISO-8859-5 stuff
(define-coding-system 'cyrillic-iso-8bit
"ISO 2022 based 8-bit encoding for Cyrillic script (MIME:ISO-8859-5)."
:coding-type 'charset
:mnemonic ?5
:charset-list '(iso-8859-5)
:mime-charset 'iso-8859-5)
(define-coding-system-alias 'iso-8859-5 'cyrillic-iso-8bit)
(set-language-info-alist
"Cyrillic-ISO" '((charset iso-8859-5)
(coding-system cyrillic-iso-8bit)
(coding-priority cyrillic-iso-8bit)
(input-method . "cyrillic-yawerty") ; fixme
(nonascii-translation . iso-8859-5)
(unibyte-display . cyrillic-iso-8bit)
(features cyril-util)
(sample-text . "Russian (Русский) Здравствуйте!")
(documentation . "Support for Cyrillic ISO-8859-5."))
'("Cyrillic"))
;; KOI-8R stuff
(define-coding-system 'cyrillic-koi8
"KOI8 8-bit encoding for Cyrillic (MIME: KOI8-R)."
:coding-type 'charset
;; We used to use ?K. It is true that ?K is more strictly correct,
;; but it is also used for Korean. So people who use koi8 for
;; languages other than Russian will have to forgive us.
:mnemonic ?R
:charset-list '(koi8)
:mime-charset 'koi8-r)
(define-coding-system-alias 'koi8-r 'cyrillic-koi8)
(define-coding-system-alias 'koi8 'cyrillic-koi8)
(define-coding-system-alias 'cp878 'cyrillic-koi8)
(set-language-info-alist
"Cyrillic-KOI8" `((charset koi8)
(coding-system cyrillic-koi8)
(coding-priority cyrillic-koi8 cyrillic-iso-8bit)
(ctext-non-standard-encodings "koi8-r")
(nonascii-translation . koi8)
(input-method . "russian-typewriter")
(features cyril-util)
(unibyte-display . cyrillic-koi8)
(sample-text . "Russian (Русский) Здравствуйте!")
(documentation . "Support for Cyrillic KOI8-R."))
'("Cyrillic"))
(set-language-info-alist
"Russian" `((charset cyrillic-iso8859-5)
(nonascii-translation
. ,(get 'cyrillic-koi8-r-nonascii-translation-table
'translation-table))
(coding-system cyrillic-koi8)
(coding-priority cyrillic-koi8 cyrillic-iso-8bit)
(input-method . "russian-computer")
(features cyril-util)
(unibyte-display . cyrillic-koi8)
(sample-text . "Russian (Русский) Здравствуйте!")
(documentation . "\
Support for Russian using koi8-r and the russian-computer input method.")
(tutorial . "TUTORIAL.ru"))
'("Cyrillic"))
(define-coding-system 'koi8-u
"KOI8-U 8-bit encoding for Cyrillic (MIME: KOI8-U)"
:coding-type 'charset
:mnemonic ?U
:charset-list '(koi8-u)
:mime-charset 'koi8-u)
(set-language-info-alist
"Ukrainian" `((charset koi8-u)
(coding-system koi8-u)
(coding-priority koi8-u)
(nonascii-translation . koi8-u)
(input-method . "ukrainian-computer")
(documentation
. "Support for Ukrainian with KOI8-U character set."))
'("Cyrillic"))
;;; ALTERNATIVNYJ stuff
(define-coding-system 'cyrillic-alternativnyj
"ALTERNATIVNYJ 8-bit encoding for Cyrillic."
:coding-type 'charset
:mnemonic ?A
:charset-list '(alternativnyj))
(define-coding-system-alias 'alternativnyj 'cyrillic-alternativnyj)
(set-language-info-alist
"Cyrillic-ALT" `((charset alternativnyj)
(coding-system cyrillic-alternativnyj)
(coding-priority cyrillic-alternativnyj)
(nonascii-translation . alternativnyj)
(input-method . "russian-typewriter")
(features cyril-util)
(unibyte-display . cyrillic-alternativnyj)
(sample-text . "Russian (Русский) Здравствуйте!")
(documentation . "Support for Cyrillic ALTERNATIVNYJ."))
'("Cyrillic"))
(define-coding-system 'cp866
"CP866 encoding for Cyrillic."
:coding-type 'charset
:mnemonic ?*
:charset-list '(ibm866)
:mime-charset 'cp866)
(define-coding-system 'koi8-u
"KOI8-U 8-bit encoding for Cyrillic (MIME: KOI8-U)"
:coding-type 'charset
:mnemonic ?U
:charset-list '(koi8-u)
:mime-charset 'koi8-u)
(define-coding-system 'koi8-t
"KOI8-T 8-bit encoding for Cyrillic"
:coding-type 'charset
:mnemonic ?*
:charset-list '(koi8-t)
:mime-charset 'koi8-t)
(define-coding-system 'windows-1251
"windows-1251 8-bit encoding for Cyrillic (MIME: WINDOWS-1251)"
:coding-type 'charset
:mnemonic ?b
:charset-list '(windows-1251)
:mime-charset 'windows-1251)
(define-coding-system-alias 'cp1251 'windows-1251)
(define-coding-system 'cp1125
"cp1125 8-bit encoding for Cyrillic"
:coding-type 'charset
:mnemonic ?*
:charset-list '(cp1125))
(define-coding-system-alias 'ruscii 'cp1125)
;; Original name for cp1125, says Serhii Hlodin <hlodin@lutsk.bank.gov.ua>
(define-coding-system-alias 'cp866u 'cp1125)
(define-coding-system 'cp855
"DOS codepage 855 (Russian)"
:coding-type 'charset
:mnemonic ?D
:charset-list '(cp855)
:mime-charset 'cp855)
(define-coding-system-alias 'ibm855 'cp855)
(define-coding-system 'mik
"Bulgarian DOS codepage"
:coding-type 'charset
:mnemonic ?D
:charset-list '(mik))
(define-coding-system 'pt154
"ParaType Asian Cyrillic codepage"
:coding-type 'charset
:mnemonic ?D
:charset-list '(pt154))
;; (set-language-info-alist
;; "Windows-1251" `((coding-system windows-1251)
;; (coding-priority windows-1251)
;; (input-method . "russian-typewriter") ; fixme?
;; (features code-pages)
;; (documentation . "Support for windows-1251 character set."))
;; '("Cyrillic"))
(set-language-info-alist
"Tajik" `((coding-system koi8-t)
(coding-priority koi8-t)
(nonascii-translation . cyrillic-koi8-t)
(charset koi8-t)
(input-method . "russian-typewriter") ; fixme?
(features code-pages)
(documentation . "Support for Tajik using KOI8-T."))
'("Cyrillic"))
(set-language-info-alist
"Bulgarian" `((coding-system windows-1251)
(coding-priority windows-1251)
(nonascii-translation . windows-1251)
(charset windows-1251)
(ctext-non-standard-encodings "microsoft-cp1251")
(input-method . "bulgarian-bds")
(documentation
. "Support for Bulgarian with windows-1251 character set."))
'("Cyrillic"))
(set-language-info-alist
"Belarusian" `((coding-system windows-1251)
(coding-priority windows-1251)
(nonascii-translation . windows-1251)
(charset windows-1251)
(ctext-non-standard-encodings "microsoft-cp1251")
(input-method . "belarusian")
(documentation
. "Support for Belarusian with windows-1251 character set.
\(The name Belarusian replaced Byelorussian in the early 1990s.)"))
'("Cyrillic"))
(set-language-info-alist
"Ukrainian" `((coding-system koi8-u)
(coding-priority koi8-u)
(input-method . "ukrainian-computer")
(documentation
. "Support for Ukrainian with koi8-u character set."))
'("Cyrillic"))
(provide 'cyrillic)
;;; cyrillic.el ends here
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