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KOI8-E (1986)
Alias(es)ISO-IR-111
Language(s)Russian, Belarusian, Macedonian, Serbian, Ukrainian (partial)
StandardECMA-113:1986
ClassificationExtended ASCII, KOI
ExtendsKOI8-B
Succeeded byECMA-113:1988 (ISO-8859-5)
Other related encoding(s)KOI8-F

ISO-IR-111[1] or KOI8-E[2] is an 8-bit character set. It is a multinational extension of KOI-8 for Belarusian, Macedonian, Serbian, and Ukrainian (except Ґґ which is added to KOI8-F). The name "ISO-IR-111" refers to its registration number in the ISO-IR registry, and denotes it as a set usable with ISO/IEC 2022.

It was defined by the first (1986) edition of ECMA-113,[3] which is the Ecma International standard corresponding to ISO/IEC 8859-5, and as such also corresponds to a 1987 draft version of ISO-8859-5.[4] The published editions of ISO/IEC 8859-5 instead correspond to subsequent editions of ECMA-113, which defines a different encoding.[5]

Naming confusion

Further information: ISO-IR-153 § Standards

ISO-IR-111, the 1985 edition of ECMA-113 (also called "ECMA-Cyrillic" or "KOI8-E"), was based on the 1974 edition of GOST 19768 (i.e. KOI-8). In 1987 ECMA-113 was redesigned.[5] These newer editions of ECMA-113 are equivalent to ISO-8859-5,[5][6] and do not follow the KOI layout. This confusion has led to a common misconception that ISO-8859-5 was defined in or based on GOST 19768-74.[6]

Possibly as another consequence of this, RFC 1345 erroneously lists a different codepage under the names "ISO-IR-111" and "ECMA-Cyrillic", resembling ISO-8859-5 with re-ordered rows, and partially compatible with Windows-1251.[7][6] Due to concerns that existing implementations might use the RFC 1345 definition for those two labels, it was proposed that the IANA additionally recognise KOI8-E as a label for ECMA-113:1985 content,[7] and the IANA presently lists that label as an alias.[2]

Character set

The following table shows the ISO-IR-111 encoding. Each character is shown with its equivalent Unicode code point.

ISO-IR-111
0 1 2 3 4 5 6 7 8 9 A B C D E F
0x
1x
2x  SP  ! " # $ % & ' ( ) * + , - . /
3x 0 1 2 3 4 5 6 7 8 9 : ; < = > ?
4x @ A B C D E F G H I J K L M N O
5x P Q R S T U V W X Y Z [ \ ] ^ _
6x ` a b c d e f g h i j k l m n o
7x p q r s t u v w x y z { | } ~
8x
9x
Ax NBSP ђ
0452 		ѓ
0453 		ё
0451 		є
0454 		ѕ
0455 		і
0456 		ї
0457 		ј
0458 		љ
0459 		њ
045A 		ћ
045B 		ќ
045C 		SHY ў
045E 		џ
045F
Bx №
2116 		Ђ
0402 		Ѓ
0403 		Ё
0401 		Є
0404 		Ѕ
0405 		І
0406 		Ї
0407 		Ј
0408 		Љ
0409 		Њ
040A 		Ћ
040B 		Ќ
040C 		¤
00A4 		Ў
040E 		Џ
040F
Cx ю
044E 		а
0430 		б
0431 		ц
0446 		д
0434 		е
0435 		ф
0444 		г
0433 		х
0445 		и
0438 		й
0439 		к
043A 		л
043B 		м
043C 		н
043D 		о
043E
Dx п
043F 		я
044F 		р
0440 		с
0441 		т
0442 		у
0443 		ж
0436 		в
0432 		ь
044C 		ы
044B 		з
0437 		ш
0448 		э
044D 		щ
0449 		ч
0447 		ъ
044A
Ex Ю
042E 		А
0410 		Б
0411 		Ц
0426 		Д
0414 		Е
0415 		Ф
0424 		Г
0413 		Х
0425 		И
0418 		Й
0419 		К
041A 		Л
041B 		М
041C 		Н
041D 		О
041E
Fx П
041F 		Я
042F 		Р
0420 		С
0421 		Т
0422 		У
0423 		Ж
0416 		В
0412 		Ь
042C 		Ы
042B 		З
0417 		Ш
0428 		Э
042D 		Щ
0429 		Ч
0427 		Ъ
042A

Extended and modified versions

A modified version named KOI8 Unified or KOI8-F was used in software produced by Fingertip Software, adding the Ґ in its KOI8-U location (replacing the soft hyphen and displacing the universal currency sign), and adding some graphical characters in the C1 control codes area, mainly from KOI8-R and Windows-1251.[4][6][8][9]

Incorrect RFC 1345 code page

RFC 1345's "ECMA-Cyrillic"
Language(s)Russian, Belarusian, Macedonian, Serbian
StandardRFC 1345
ClassificationExtended ASCII
Transforms / EncodesISO-IR-111
Other related encoding(s)ISO-8859-5, Windows-1251

RFC 1345 erroneously lists a different code page under the name ISO-IR-111, encoding the same Cyrillic characters but with a different layout. It resembles a mixture of Windows-1251 and ISO-8859-5.[7] Specifically, line A_ corresponds to ISO-8859-5, lines C_ through F_ correspond to Windows-1251[6] (equivalent to lines B_ through E_ of ISO-8859-5), and line B_ nearly corresponds to line F_ of ISO-8859-5, with the exception of the § being replaced with a ¤.

Certain codes resemble ISO-IR-111 with flipped letter case, which may have contributed to the confusion. The majority differ and are shown below.

Code page erroneously labelled "ISO-IR-111" or "ECMA-Cyrillic" in RFC 1345
0 1 2 3 4 5 6 7 8 9 A B C D E F
Ax NBSP Ё Ђ Ѓ Є Ѕ І Ї Ј Љ Њ Ћ Ќ SHY Ў Џ
Bx № ё ђ ѓ є ѕ і ї ј љ њ ћ ќ ¤ ў џ
Cx А Б В Г Д Е Ж З И Й К Л М Н О П
Dx Р С Т У Ф Х Ц Ч Ш Щ Ъ Ы Ь Э Ю Я
Ex а б в г д е ж з и й к л м н о п
Fx р с т у ф х ц ч ш щ ъ ы ь э ю я
  Deviating from ISO-IR-111 (excluding deviations in case only)

See also

References

  1. ^ ECMA (1 August 1985). Right-hand Part of the Cyrillic Alphabet (PDF). ITSCJ/IPSJ. ISO-IR-111.
  2. ^ a b "Character Sets". IANA.
  3. ^ ECMA-113. 8-Bit Single-Byte Coded Graphic Character Sets - Latin/Cyrillic Alphabet (1st ed., June 1986)
  4. ^ a b Czyborra, Roman (1998-11-30) [1998-05-25]. "The Cyrillic Charset Soup". Archived from the original on 2016-12-03. Retrieved 2016-12-03.
  5. ^ a b c ECMA-113. 8-Bit Single-Byte Coded Graphic Character Sets - Latin/Cyrillic Alphabet (2nd ed., June 1988)
  6. ^ a b c d e Nechayev, Valentin (2013) [2001]. "Review of 8-bit Cyrillic encodings universe". Archived from the original on 2016-12-05. Retrieved 2016-12-05.
  7. ^ a b c Sokolov, Michael (2003-04-05). "ECMA-cyrillic alias iso-ir-111 sore". IETF Charsets Mailing List.
  8. ^ "KOI8 Unified". Fingertip Software. Archived from the original on 1998-01-09. Retrieved 2020-02-11.
  9. ^ Leisher, Mark (2008) [1998-03-05]. "KOI8 Unified Cyrillic to Unicode 2.1 mapping table". Department of Mathematical Sciences, New Mexico State University. Retrieved 2020-05-02.
source: https://en.wikipedia.org/wiki/ISO-IR-111

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