imported>Comp.arch: /* EUC-KR */ Stats.

2025-10-09T21:12:16Z

EUC-KR: Stats.

← Previous revision		Revision as of 21:12, 9 October 2025
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	'''EUC-JP''' is a [[variable-width encoding\|variable-length encoding]] used to represent the elements of three [[JIS encoding\|Japanese character set standards]], namely {{nowrap\|[[JIS X 0208]]}}, {{nowrap\|[[JIS X 0212]]}}, and {{nowrap\|[[JIS X 0201]]}}. Other names for this encoding include '''Unixized JIS''' (or '''UJIS''') and '''AT&T JIS'''.<ref name="lunde">{{cite book \| url=https://books.google.com/books?id=EH1MDAAAQBAJ&q=%22euc+packed+format%22&pg=PA244 \| title=CJKV Information Processing: Chinese, Japanese, Korean, and Vietnamese Computing \| publisher=O'Reilly \| author=Lunde, Ken \| year=2008 \| isbn=9780596800925 \| pages=242–244}}</ref> 0.1% of all web pages use EUC-JP since ~~September 2022~~,<ref>{{cite web \| url=https://w3techs.com/technologies/history_overview/character_encoding \| title=Historical trends in the usage of character encodings for websites \| publisher=W3Techs}}</ref> while 2.6% of websites written with Japanese use this second-most popular (for Japanese) encoding<ref>{{Cite web \|title=Distribution of Character Encodings among websites that use Japanese \|url=https://w3techs.com/technologies/segmentation/cl-ja-/character_encoding \|access-date=~~2023~~-11-01 \|website=w3techs.com}}</ref> (<!-- i.e. of those "that use Japanese as content language." -->which is more than for [[Shift JIS]]<!-- might be a fluke, but now by either metric: , though of those sites, i.e. on national Japanese websites,<!- i.e. with ".jp as top level domain."; it used to be "less used", note https://w3techs.com/technologies/details/en-shiftjis ShiftJIS recently took a nose-dive (a statistical fluke?), -> less used than {{nowrap\|[[Shift JIS]]}}, --> both are much less used that [[UTF-8]]). It is called '''Code page 954''' by IBM.<ref>{{cite web\|title=CCSID 954 information document\|archive-url=https://web.archive.org/web/20160327022203/http://www-01.ibm.com/software/globalization/ccsid/ccsid954.html\|archive-date=2016-03-27\|url=https://www-01.ibm.com/software/globalization/ccsid/ccsid954.html}}</ref><ref>{{Citation\|title=International Components for Unicode (ICU), ibm-954_P101-2007.ucm\|url=https://github.com/unicode-org/icu/blob/master/icu4c/source/data/mappings/ibm-954_P101-2007.ucm\|date=2002-12-03}}</ref> Microsoft has two code page numbers for this encoding (51932 and 20932).		'''EUC-JP''' is a [[variable-width encoding\|variable-length encoding]] used to represent the elements of three [[JIS encoding\|Japanese character set standards]], namely {{nowrap\|[[JIS X 0208]]}}, {{nowrap\|[[JIS X 0212]]}}, and {{nowrap\|[[JIS X 0201]]}}. Other names for this encoding include '''Unixized JIS''' (or '''UJIS''') and '''AT&T JIS'''.<ref name="lunde">{{cite book \| url=https://books.google.com/books?id=EH1MDAAAQBAJ&q=%22euc+packed+format%22&pg=PA244 \| title=CJKV Information Processing: Chinese, Japanese, Korean, and Vietnamese Computing \| publisher=O'Reilly \| author=Lunde, Ken \| year=2008 \| isbn=9780596800925 \| pages=242–244}}</ref> Less than 0.1% of all web pages use EUC-JP since January 2025,<ref>{{cite web \| url=https://w3techs.com/technologies/history_overview/character_encoding \| title=Historical trends in the usage of character encodings for websites \| publisher=W3Techs}}</ref> while 2.3% of websites written with Japanese use this second-most popular (for Japanese) encoding<ref>{{Cite web \|title=Distribution of Character Encodings among websites that use Japanese \|url=https://w3techs.com/technologies/segmentation/cl-ja-/character_encoding \|access-date=2025-07-09 \|website=w3techs.com}}</ref> (<!-- i.e. of those "that use Japanese as content language." -->which is more than for [[Shift JIS]]<!-- might be a fluke, but now by either metric: though of those sites, i.e. on national Japanese websites,<!- i.e. with ".jp as top level domain."; it used to be "less used", note https://w3techs.com/technologies/details/en-shiftjis ShiftJIS recently took a nose-dive (a statistical fluke?), -> less used than {{nowrap\|[[Shift JIS]]}}, --> both are much less used that [[UTF-8]]). It is called '''Code page 954''' by IBM.<ref>{{cite web\|title=CCSID 954 information document\|archive-url=https://web.archive.org/web/20160327022203/http://www-01.ibm.com/software/globalization/ccsid/ccsid954.html\|archive-date=2016-03-27\|url=https://www-01.ibm.com/software/globalization/ccsid/ccsid954.html}}</ref><ref>{{Citation\|title=International Components for Unicode (ICU), ibm-954_P101-2007.ucm\|url=https://github.com/unicode-org/icu/blob/master/icu4c/source/data/mappings/ibm-954_P101-2007.ucm\|date=2002-12-03}}</ref> Microsoft has two code page numbers for this encoding (51932 and 20932).

	This encoding scheme allows the easy mixing of 7-bit ASCII and 8-bit Japanese without the need for the escape characters employed by [[ISO-2022-JP]], which is based on the same character set standards, and without ASCII bytes appearing as trail bytes (unlike [[Shift JIS]]).		This encoding scheme allows the easy mixing of 7-bit ASCII and 8-bit Japanese without the need for the escape characters employed by [[ISO-2022-JP]], which is based on the same character set standards, and without ASCII bytes appearing as trail bytes (unlike [[Shift JIS]]).
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	It is usually referred to as Wansung ({{korean\|완성\|rr=Wanseong\|lit=precomposed<ref>{{cite book\|chapter-url=https://books.google.com/books?id=SA92uQqTB-AC&pg=PA146\|title=CJKV Information Processing\|last=Lunde\|first=Ken\|author-link=Ken Lunde\|page=146\|chapter=Chapter 3: Character Set Standards\|isbn=978-0596514471\|date=2009\|publisher="O'Reilly Media, Inc." }}</ref>}}) in the [[Republic of Korea]]. IBM refers to the double-byte component as '''Code page 971''',<ref>{{Cite web\|title=IBM Globalization – Coded character set identifiers – CCSID 971\|url=https://www-01.ibm.com/software/globalization/ccsid/ccsid971.html\|archive-url=https://web.archive.org/web/20141130005339/http://www-01.ibm.com/software/globalization/ccsid/ccsid971.html\|access-date=2021-09-03\|archive-date=2014-11-30}}</ref> and to EUC-KR with ASCII as '''Code page 970'''.<ref>{{cite web\|url=https://www-01.ibm.com/software/globalization/ccsid/ccsid970.html\|title=CCSID 970\|publisher=IBM\|work=IBM Globalization\|archive-url=https://web.archive.org/web/20141201233141/http://www-01.ibm.com/software/globalization/ccsid/ccsid970.html\|archive-date=2014-12-01}}</ref><ref>{{cite web\|url=https://icu4c-demos.unicode.org/icu-bin/convexp?conv=euc-kr\|title=ibm-970_P110_P110-2006_U2 (alias euc-kr)\|work=Converter Explorer – ICU Demonstration\|publisher=International Components for Unicode}}</ref><ref>{{Citation\|title=International Components for Unicode (ICU), ibm-970_P110_P110-2006_U2.ucm\|url=https://github.com/unicode-org/icu/blob/master/icu4c/source/data/mappings/ibm-970_P110_P110-2006_U2.ucm\|date=2002-12-03}}</ref> It is implemented as '''Code page 20949''' ("Korean Wansung")<ref name="winids" /><ref>{{cite web \|url=https://source.winehq.org/git/wine.git/blob/6f68543692a7588daa581d00c475715395036b15:/tools/make_unicode#l946 \|title=dump_krwansung_codepage: build Korean Wansung table from the KSX1001 file \|work=make_unicode: Generate code page .c files from ftp.unicode.org descriptions \|first=Alexandre \|last=Julliard \|date=11 March 2021 \|publisher=[[Wine (software)\|Wine Project]]}}</ref> and '''Code page 51949''' ("EUC Korean") by Microsoft.<ref name="winids">{{cite web \|url=https://docs.microsoft.com/en-us/windows/desktop/intl/code-page-identifiers \|title=Code Page Identifiers \|publisher=Microsoft \|department=Windows Dev Center\|date=7 January 2021 }}</ref>		It is usually referred to as Wansung ({{korean\|완성\|rr=Wanseong\|lit=precomposed<ref>{{cite book\|chapter-url=https://books.google.com/books?id=SA92uQqTB-AC&pg=PA146\|title=CJKV Information Processing\|last=Lunde\|first=Ken\|author-link=Ken Lunde\|page=146\|chapter=Chapter 3: Character Set Standards\|isbn=978-0596514471\|date=2009\|publisher="O'Reilly Media, Inc." }}</ref>}}) in the [[Republic of Korea]]. IBM refers to the double-byte component as '''Code page 971''',<ref>{{Cite web\|title=IBM Globalization – Coded character set identifiers – CCSID 971\|url=https://www-01.ibm.com/software/globalization/ccsid/ccsid971.html\|archive-url=https://web.archive.org/web/20141130005339/http://www-01.ibm.com/software/globalization/ccsid/ccsid971.html\|access-date=2021-09-03\|archive-date=2014-11-30}}</ref> and to EUC-KR with ASCII as '''Code page 970'''.<ref>{{cite web\|url=https://www-01.ibm.com/software/globalization/ccsid/ccsid970.html\|title=CCSID 970\|publisher=IBM\|work=IBM Globalization\|archive-url=https://web.archive.org/web/20141201233141/http://www-01.ibm.com/software/globalization/ccsid/ccsid970.html\|archive-date=2014-12-01}}</ref><ref>{{cite web\|url=https://icu4c-demos.unicode.org/icu-bin/convexp?conv=euc-kr\|title=ibm-970_P110_P110-2006_U2 (alias euc-kr)\|work=Converter Explorer – ICU Demonstration\|publisher=International Components for Unicode}}</ref><ref>{{Citation\|title=International Components for Unicode (ICU), ibm-970_P110_P110-2006_U2.ucm\|url=https://github.com/unicode-org/icu/blob/master/icu4c/source/data/mappings/ibm-970_P110_P110-2006_U2.ucm\|date=2002-12-03}}</ref> It is implemented as '''Code page 20949''' ("Korean Wansung")<ref name="winids" /><ref>{{cite web \|url=https://source.winehq.org/git/wine.git/blob/6f68543692a7588daa581d00c475715395036b15:/tools/make_unicode#l946 \|title=dump_krwansung_codepage: build Korean Wansung table from the KSX1001 file \|work=make_unicode: Generate code page .c files from ftp.unicode.org descriptions \|first=Alexandre \|last=Julliard \|date=11 March 2021 \|publisher=[[Wine (software)\|Wine Project]]}}</ref> and '''Code page 51949''' ("EUC Korean") by Microsoft.<ref name="winids">{{cite web \|url=https://docs.microsoft.com/en-us/windows/desktop/intl/code-page-identifiers \|title=Code Page Identifiers \|publisher=Microsoft \|department=Windows Dev Center\|date=7 January 2021 }}</ref>

	{{As of\|2025\|05}}, less than 0.~~065~~% of all web pages globally declare using EUC-KR,<ref>{{Cite web \|title=Usage Statistics and Market Share of EUC-KR for Websites, March 2025 \|url=https://w3techs.com/technologies/details/en-euckr \|access-date=2025-05-02 \|website=w3techs.com}}</ref> but <!-- At 7.4% but rather showing result of calculation, that number plus other encoding adds up to way more than 100.0%. [[KS C 5601]] seems to be related, and is factored into the calculation: 100-95.5% = --> 4.5% of South Korean web pages use EUC-KR.<ref>{{Cite web\|title=Distribution of Character Encodings among websites that use .kr\|url=https://w3techs.com/technologies/segmentation/tld-kr-/character_encoding\|website=w3techs.com\|access-date=2025-05-02}}</ref> <!-- Cyrillic Windows-1251 in Russia at 100-96.1% = 3.9% (4.5%) is often higher, currently lower, and some small languages have higher non-UTF-8 use: https://w3techs.com/technologies/segmentation/cl-br-/character_encoding meaning the following is an untrue statement: making it the most popular non-[[UTF-8]]/Unicode encoding for a language/web domain.<ref>{{Cite web\|url=https://w3techs.com/technologies/segmentation/cl-ko-/character_encoding\|title=Distribution of Character Encodings among websites that use Korean\|website=w3techs.com\|access-date=2022-06-18}}</ref> --> Including extensions, it is the most widely used legacy character encoding in Korea on all three major platforms ([[macOS]], other Unix-like OSes, and Windows), but its use has been very slowly shifting to [[UTF-8]] as it gains popularity, especially on Linux and macOS.		{{As of\|2025\|10}}, less than 0.06% of all web pages globally declare using EUC-KR,<ref>{{Cite web \|title=Usage Statistics and Market Share of EUC-KR for Websites, March 2025 \|url=https://w3techs.com/technologies/details/en-euckr \|access-date=2025-07-09 \|website=w3techs.com}}</ref> but <!-- At 6.67% but rather showing result of calculation, that number plus other encoding adds up to way more than 100.0%. [[KS C 5601]] seems to be related, and is factored into the calculation: 100-96.0% = --> 4.0% of South Korean web pages use EUC-KR.<ref>{{Cite web\|title=Distribution of Character Encodings among websites that use .kr\|url=https://w3techs.com/technologies/segmentation/tld-kr-/character_encoding\|website=w3techs.com\|access-date=2025-07-09}}</ref> <!-- Cyrillic Windows-1251 in Russia at 100-96.3% = 3.7% (4.3%) is often higher, currently lower, and some small languages have higher non-UTF-8 use: https://w3techs.com/technologies/segmentation/cl-br-/character_encoding meaning the following is an untrue statement: making it the most popular non-[[UTF-8]]/Unicode encoding for a language/web domain.<ref>{{Cite web\|url=https://w3techs.com/technologies/segmentation/cl-ko-/character_encoding\|title=Distribution of Character Encodings among websites that use Korean\|website=w3techs.com\|access-date=2022-06-18}}</ref> --> Including extensions, it is the most widely used legacy character encoding in Korea on all three major platforms ([[macOS]], other Unix-like OSes, and Windows), but its use has been very slowly shifting to [[UTF-8]] as it gains popularity, especially on Linux and macOS.

	As with most other encodings, [[UTF-8]] is now preferred for new use, solving problems with consistency between platforms and vendors.		As with most other encodings, [[UTF-8]] is now preferred for new use, solving problems with consistency between platforms and vendors.

imported>HarJIT: /* EUC-TW */Partial revert: the (classic) Mac OS Traditional Chinese encoding is based on a Big5 DBCS with a slightly reduced lead-byte range, not on EUC-TW; see e.g. https://unicode.org/Public/MAPPINGS/VENDORS/APPLE/CHINTRAD.TXT

2025-05-11T14:45:13Z

EUC-TW: Partial revert: the (classic) Mac OS Traditional Chinese encoding is based on a Big5 DBCS with a slightly reduced lead-byte range, not on EUC-TW; see e.g. https://unicode.org/Public/MAPPINGS/VENDORS/APPLE/CHINTRAD.TXT

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Extended Unix Code - Revision history

imported>Comp.arch: /* EUC-KR */ Stats.

imported>HarJIT: /* EUC-TW */Partial revert: the (classic) Mac OS Traditional Chinese encoding is based on a Big5 DBCS with a slightly reduced lead-byte range, not on EUC-TW; see e.g. https://unicode.org/Public/MAPPINGS/VENDORS/APPLE/CHINTRAD.TXT