This document is mechanically formatted from the XML file for the LGR. It provides additional summary data and explanatory text. The XML file remains the sole normative specification of the LGR.
Date | 2016-08-30 |
---|---|
LGR Version | 1 |
Language | bul-Cyrl |
Unicode Version | 6.3.0 |
This document specifies a reference set of Label Generation Rules for Bulgarian using a limited repertoire as appropriate for a second level domain.
All references converge on 30 Cyrillic code points (23 +9 as defined by RFC 5992 [130]). CLDR in its auxiliary list adds 7 code points of which 2 correspond to historic letters. These code points are U+0463 (ѣ) CYRILLIC SMALL LETTER YAT and U+046B (ѫ) CYRILLIC SMALL LETTER BIG YUS. They are also excluded from MSR-2 (see MSR-2 in the Table of References) as being obsolete. Of the other 5, 3 have no other sources and are not included. The last 2: U+0450 (ѐ) CYRILLIC SMALL LETTER IE WITH GRAVE and U+045D (ѝ) CYRILLIC SMALL LETTER I WITH GRAVE have additional sources and are part of the extended set.
Note: The article in [605] indicates that "In Bulgarian and Macedonian, the grave accent is sometimes, although not very often, used on the vowels а, о, у, е, и and ъ (ъ exists in Bulgarian only) to mark stress...In a few cases (mostly on the vowels е and и) the stress mark is orthographically required to distinguish words which are Homographs".
There is an IDN table published in the IANA Repository of IDN Practices for Bulgarian by .bg (Bulgaria cctld) in [700]
Letters documented in some references but not included:
U+044B (ы) CYRILLIC SMALL LETTER YERU
U+044D (э) CYRILLIC SMALL LETTER E
U+0451 (ё) CYRILLIC SMALL LETTER IO
U+0463 (ѣ) CYRILLIC SMALL LETTER YAT
U+046B (ѫ) CYRILLIC SMALL LETTER BIG YUS
U+0463 (ѣ) CYRILLIC SMALL LETTER YAT
U+0430 U+0300 (а̀) CYRILLIC SMALL LETTER A WITH GRAVE ACCENT
U+043E U+0300 (о̀) CYRILLIC SMALL LETTER O WITH GRAVE ACCENT
U+0443 U+0300 (у̀) CYRILLIC SMALL LETTER U WITH GRAVE ACCENT
U+044A U+0300 (ъ̀) CYRILLIC SMALL LETTER HARD SIGN WITH GRAVE ACCENT
U+044E U+0300 (ю̀) CYRILLIC SMALL LETTER YU WITH GRAVE ACCENT
U+044F U+0300 (я̀) CYRILLIC SMALL LETTER YA WITH GRAVE ACCENT
Two letters not considered essential to writing the core vocabulary of the language are nevertheless in common use. Where they have not been added to the core repertoire, they are flagged as "extended-cp" in the table of code points. A context rule is provided that by default will prohibit labels with extended code points. To support extended single code points or code point sequences, delete the context "extended-cp" from their repertoire definition.
None.
This LGR defines no named character classes.
Common rules only:
Hyphen Restrictions — restrictions on the allowable placement of hyphens (no leading/ending hyphen and no hyphen in positions 3 and 4). These restrictions are described in section 4.2.3.1 of RFC5891 [120]. They are implemented here as context rule on U+002D (-) (-) HYPHEN-MINUS.
Leading Combining Marks — restrictions on the allowable placement of combining marks (no leading combining mark). This rule is described in section 4.2.3.2 of RFC5891 [120].
Actions included are the default actions for LGRs as well as those needed to invalidate labels with misplaced combining marks.
Variant-related actions included to facilitate integration as appropriate.
This reference LGR for Bulgarian for the 2nd Level has been developed by Michel Suignard and Asmus Freytag, verified in expert reviews by Michael Everson, Nicholas Ostler, and Wil Tan, and based on multiple open public consultations.
General reference for the language:
Scatton, Ernest B. 1993. "Bulgarian", in Bernard Comrie & Greville G. Corbett, eds. The Slavonic languages. London; New York: Routledge. ISBN 0-415-04755-2
In the listing of the repertoire by code point, references starting from [0] refer to the version of the Unicode Standard in which the corresponding code point was initially encoded. Other references, (starting from [100]) document usage of code points. For more details, see the Table of References below.
Number of elements in Repertoire | 41 |
---|---|
Number of extended elements | 2 |
Total entries in table | 43 |
Longest code point sequence | 1 |
The following table lists the repertoire by code point (or code point sequence). The data in the Script and Name column are extracted from the Unicode character database. Where a comment in the original LGR is equal to the character name, it has been suppressed.
Code Point |
Glyph | Script | Name | References | Tags | Required Context | Part of Repertoire |
Comment |
---|---|---|---|---|---|---|---|---|
U+002D | - | Common | HYPHEN-MINUS | [0] | sc:Zyyy | not: hyphen-minus-disallowed | ✔ | |
U+0030 | 0 | Common | DIGIT ZERO | [0] | sc:Zyyy | ✔ | ||
U+0031 | 1 | Common | DIGIT ONE | [0] | sc:Zyyy | ✔ | ||
U+0032 | 2 | Common | DIGIT TWO | [0] | sc:Zyyy | ✔ | ||
U+0033 | 3 | Common | DIGIT THREE | [0] | sc:Zyyy | ✔ | ||
U+0034 | 4 | Common | DIGIT FOUR | [0] | sc:Zyyy | ✔ | ||
U+0035 | 5 | Common | DIGIT FIVE | [0] | sc:Zyyy | ✔ | ||
U+0036 | 6 | Common | DIGIT SIX | [0] | sc:Zyyy | ✔ | ||
U+0037 | 7 | Common | DIGIT SEVEN | [0] | sc:Zyyy | ✔ | ||
U+0038 | 8 | Common | DIGIT EIGHT | [0] | sc:Zyyy | ✔ | ||
U+0039 | 9 | Common | DIGIT NINE | [0] | sc:Zyyy | ✔ | ||
U+0430 | а | Cyrillic | CYRILLIC SMALL LETTER A | [0], [100], [130], [201], [301], [401], [700] | sc:Cyrl | ✔ | ||
U+0431 | б | Cyrillic | CYRILLIC SMALL LETTER BE | [0], [100], [130], [201], [301], [401], [700] | sc:Cyrl | ✔ | ||
U+0432 | в | Cyrillic | CYRILLIC SMALL LETTER VE | [0], [100], [130], [201], [301], [401], [700] | sc:Cyrl | ✔ | ||
U+0433 | г | Cyrillic | CYRILLIC SMALL LETTER GHE | [0], [100], [130], [201], [301], [401], [700] | sc:Cyrl | ✔ | ||
U+0434 | д | Cyrillic | CYRILLIC SMALL LETTER DE | [0], [100], [130], [201], [301], [401], [700] | sc:Cyrl | ✔ | ||
U+0435 | е | Cyrillic | CYRILLIC SMALL LETTER IE | [0], [100], [130], [201], [301], [401], [700] | sc:Cyrl | ✔ | ||
U+0436 | ж | Cyrillic | CYRILLIC SMALL LETTER ZHE | [0], [100], [130], [201], [301], [401], [700] | sc:Cyrl | ✔ | ||
U+0437 | з | Cyrillic | CYRILLIC SMALL LETTER ZE | [0], [100], [130], [201], [301], [401], [700] | sc:Cyrl | ✔ | ||
U+0438 | и | Cyrillic | CYRILLIC SMALL LETTER I | [0], [100], [130], [201], [301], [401], [700] | sc:Cyrl | ✔ | ||
U+0439 | й | Cyrillic | CYRILLIC SMALL LETTER SHORT I | [0], [100], [130], [201], [301], [401], [700] | sc:Cyrl | ✔ | ||
U+043A | к | Cyrillic | CYRILLIC SMALL LETTER KA | [0], [100], [130], [201], [301], [401], [700] | sc:Cyrl | ✔ | ||
U+043B | л | Cyrillic | CYRILLIC SMALL LETTER EL | [0], [100], [130], [201], [301], [401], [700] | sc:Cyrl | ✔ | ||
U+043C | м | Cyrillic | CYRILLIC SMALL LETTER EM | [0], [100], [130], [201], [301], [401], [700] | sc:Cyrl | ✔ | ||
U+043D | н | Cyrillic | CYRILLIC SMALL LETTER EN | [0], [100], [130], [201], [301], [401], [700] | sc:Cyrl | ✔ | ||
U+043E | о | Cyrillic | CYRILLIC SMALL LETTER O | [0], [100], [130], [201], [301], [401], [700] | sc:Cyrl | ✔ | ||
U+043F | п | Cyrillic | CYRILLIC SMALL LETTER PE | [0], [100], [130], [201], [301], [401], [700] | sc:Cyrl | ✔ | ||
U+0440 | р | Cyrillic | CYRILLIC SMALL LETTER ER | [0], [100], [130], [201], [301], [401], [700] | sc:Cyrl | ✔ | ||
U+0441 | с | Cyrillic | CYRILLIC SMALL LETTER ES | [0], [100], [130], [201], [301], [401], [700] | sc:Cyrl | ✔ | ||
U+0442 | т | Cyrillic | CYRILLIC SMALL LETTER TE | [0], [100], [130], [201], [301], [401], [700] | sc:Cyrl | ✔ | ||
U+0443 | у | Cyrillic | CYRILLIC SMALL LETTER U | [0], [100], [130], [201], [301], [401], [700] | sc:Cyrl | ✔ | ||
U+0444 | ф | Cyrillic | CYRILLIC SMALL LETTER EF | [0], [100], [130], [201], [301], [401], [700] | sc:Cyrl | ✔ | ||
U+0445 | х | Cyrillic | CYRILLIC SMALL LETTER HA | [0], [100], [130], [201], [301], [401], [700] | sc:Cyrl | ✔ | ||
U+0446 | ц | Cyrillic | CYRILLIC SMALL LETTER TSE | [0], [100], [130], [201], [301], [401], [700] | sc:Cyrl | ✔ | ||
U+0447 | ч | Cyrillic | CYRILLIC SMALL LETTER CHE | [0], [100], [130], [201], [301], [401], [700] | sc:Cyrl | ✔ | ||
U+0448 | ш | Cyrillic | CYRILLIC SMALL LETTER SHA | [0], [100], [130], [201], [301], [401], [700] | sc:Cyrl | ✔ | ||
U+0449 | щ | Cyrillic | CYRILLIC SMALL LETTER SHCHA | [0], [100], [130], [201], [301], [401], [700] | sc:Cyrl | ✔ | ||
U+044A | ъ | Cyrillic | CYRILLIC SMALL LETTER HARD SIGN | [0], [100], [130], [201], [301], [401], [700] | sc:Cyrl | ✔ | ||
U+044C | ь | Cyrillic | CYRILLIC SMALL LETTER SOFT SIGN | [0], [100], [130], [201], [301], [401], [700] | sc:Cyrl | ✔ | ||
U+044E | ю | Cyrillic | CYRILLIC SMALL LETTER YU | [0], [100], [130], [201], [301], [401], [700] | sc:Cyrl | ✔ | ||
U+044F | я | Cyrillic | CYRILLIC SMALL LETTER YA | [0], [100], [130], [201], [301], [401], [700] | sc:Cyrl | ✔ | ||
U+0450 | ѐ | Cyrillic | CYRILLIC SMALL LETTER IE WITH GRAVE | [3], [301], [402], [605] | sc:Cyrl | extended-cp | ◯ | |
U+045D | ѝ | Cyrillic | CYRILLIC SMALL LETTER I WITH GRAVE | [3], [301], [402], [605] | sc:Cyrl | extended-cp | ◯ |
This LGR does not specify any variants.
The following table lists all named classes with their definition and a list of their members intersected with the current repertoire (for larger classes, this list is elided).
Name | Definition | Count | Members or Ranges | Ref | Comment |
---|---|---|---|---|---|
implicit | Tag=sc:Cyrl | 32 Elements: | {0430-044A 044C 044E-0450 045D} | ||
implicit | Tag=sc:Zyyy | 11 Elements: | {002D 0030-0039} |
The following table lists all named rules defined in the LGR and indicates whether they are used as trigger in an action or as context (when or not-when) for a code point. (Any use of context rules for variants is not indicated).
Name | Used as Trigger |
Used as Context |
Anchor | Regular Expression | Ref | Comment |
---|---|---|---|---|---|---|
leading-combining-mark | ✔ | (^[∅=[[∅=\p{gc=Mn}][∅=\p{gc=Mc}]]]) |
[120] | RFC5891 restrictions on placement of combining marks | ||
hyphen-minus-disallowed | ✔ | ✔ | ((((?<=^)⚓)|(⚓(?=$))|((?<=^..\u002D)⚓))) |
[120] | RFC5891 restrictions on placement of U+002D | |
extended-cp | ✔ | (^$) |
code points from the extended range |
The following table lists the actions that are used to assign dispositions to labels and variant labels, based on the specified conditions. The order of actions defines their precedence: the first action triggered by a label is the one defining its disposition.
# | Condition | Rule / Variant Set | Disposition | Ref | Comment | |
---|---|---|---|---|---|---|
1 | if label matches | leading-combining-mark | → | invalid | by default, labels with leading combining marks are invalid | |
2 | if any label (catch-all) | → | valid | catch all (default action) |
[0] | The Unicode Consortium. The Unicode Standard, Version 6.3.0, (Mountain View, CA: The Unicode Consortium, 2013. ISBN 978-1-936213-08-5) Any code point cited was originally encoded in Unicode Version 1.1 |
[3] | The Unicode Consortium. The Unicode Standard, Version 6.3.0, (Mountain View, CA: The Unicode Consortium, 2013. ISBN 978-1-936213-08-5) Any code point cited was originally encoded in Unicode Version 3.0 |
[100] | Internetstiftelsen i Sverige (IIS), Bulgarian https://github.com/dotse/IDN-ref-tables/blob/master/language-tables/bulgarian-lang-ref-table.txt |
[107] | MSR-2 Maximum Starting Repertoire https://www.icann.org/en/system/files/files/msr-2-overview-14apr15-en.pdf |
[120] | RFC5891, Internationalized Domain Names in Applications (IDNA): Protocol http://tools.ietf.org/html/rfc5891 |
[130] | RFC5992, Internationalized Domain Names Registration and Administration Guidelines for European Languages Using Cyrillic - section 2.2 Bulgarian https://tools.ietf.org/html/rfc5992 |
[201] | Omniglot Bulgarian http://www.omniglot.com/writing/bulgarian.htm Code points cited form the standard set |
[204] | Omniglot Bulgarian http://www.omniglot.com/writing/bulgarian.htm Code points cited are rare or archaic |
[301] | Everson, Michael, The Alphabets of Europe, Bulgarian http://evertype.com/alphabets/bulgarian.pdf Code points cited form the standard set |
[304] | Everson, Michael, The Alphabets of Europe, Bulgarian http://evertype.com/alphabets/bulgarian.pdf Code points cited are rare or archaic |
[401] | The Unicode Consortium, Common Locale Data Repository - CLDR Version 28 (2015-09-16) - Locale Data Summary for Bulgarian [bg]- http://www.unicode.org/cldr/charts/28/summary/bg.html Code points cited are from the set of Main Letters |
[402] | The Unicode Consortium, Common Locale Data Repository - CLDR Version 28 (2015-09-16) - Locale Data Summary for Bulgarian [bg]- http://www.unicode.org/cldr/charts/28/summary/bg.html Code points cited are from the set of Auxiliary Letters |
[605] | Wikipedia https://en.wikipedia.org/wiki/Grave_accent accessed 2015-11-11 Article providing evidence for the use of the grave accent in Bulgarian and Macedonian |
[700] | Register.BG (.bg cctld Bulgarian Register) http://www.iana.org/domains/idn-tables/tables/bg_bg-bg_1.0.html |