Reference LGR for language: Lithuanian (lt) | lgr-second-level-lithuanian-language-18may21-en |
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This document is mechanically formatted from the above 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 | 2021-05-18 |
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LGR Version | 2 (Second Level Reference LGR) |
Language | lt (Lithuanian Language) |
Unicode Version | 6.3.0 |
This document specifies a reference set of Label Generation Rules for Lithuanian using a limited repertoire as appropriate for a second level domain.
Most references converge on 35 Latin code points.
There is no IDN table published in the IANA Repository of IDN Practices by .lt ccTLD, but the registry provides IDN information [700].
Letters and sequences documented in some references but not included:
U+0069 U+0307 U+0301 (i̇́) LATIN SMALL LETTER I WITH DOT ABOVE AND ACUTE
U+0069 U+0307 U+0303 (i̇̃) LATIN SMALL LETTER I WITH DOT ABOVE AND TILDE
U+006A U+0303 (j̃) LATIN SMALL LETTER J WITH TILDE
U+006A U+0307 U+0303 (j̇̃) LATIN SMALL LETTER J WITH DOT ABOVE AND TILDE
U+006C U+0303 (l̃) LATIN SMALL LETTER L WITH TILDE
U+006D U+0303 (m̃) LATIN SMALL LETTER M WITH TILDE
U+0072 U+0303 (r̃) LATIN SMALL LETTER R WITH TILDE
U+00E0 (à) LATIN SMALL LETTER A WITH GRAVE
U+00E1 (á) LATIN SMALL LETTER A WITH ACUTE
U+00E3 (ã) LATIN SMALL LETTER A WITH TILDE
U+00E8 (è) LATIN SMALL LETTER E WITH GRAVE
U+00E9 (é) LATIN SMALL LETTER E WITH ACUTE
U+00EC (ì) LATIN SMALL LETTER I WITH GRAVE
U+00ED (í) LATIN SMALL LETTER I WITH ACUTE
U+00F1 (ñ) LATIN SMALL LETTER N WITH TILDE
U+00F2 (ò) LATIN SMALL LETTER O WITH GRAVE
U+00F3 (ó) LATIN SMALL LETTER O WITH ACUTE
U+00F5 (õ) LATIN SMALL LETTER O WITH TILDE
U+00F9 (ù) LATIN SMALL LETTER U WITH GRAVE
U+00FA (ú) LATIN SMALL LETTER U WITH ACUTE
U+0105 U+0301 (ą́) LATIN SMALL LETTER A WITH OGONEK AND ACUTE
U+0105 U+0303 (ą̃) LATIN SMALL LETTER A WITH OGONEK AND TILDE
U+0117 U+0301 (ė́) LATIN SMALL LETTER E WITH DOT ABOVE AND ACUTE
U+0117 U+0303 (ė̃) LATIN SMALL LETTER E WITH DOT ABOVE AND TILDE
U+0119 U+0301 (ę́) LATIN SMALL LETTER E WITH OGONEK AND ACUTE
U+0119 U+0303 (ę̃) LATIN SMALL LETTER E WITH OGONEK AND TILDE
U+0129 (ĩ) LATIN SMALL LETTER I WITH TILDE
U+012F U+0301 (į́) LATIN SMALL LETTER I WITH OGONEK AND ACUTE
U+012F U+0303 (į̃) LATIN SMALL LETTER I WITH OGONEK AND TILDE
U+012F U+0307 (į̇) 0301 LATIN SMALL LETTER I WITH OGONEK AND DOT ABOVE AND ACUTE
U+012F U+0307 (į̇) 0303 LATIN SMALL LETTER I WITH OGONEK AND DOT ABOVE AND TILDE
U+0169 (ũ) LATIN SMALL LETTER U WITH TILDE
U+016B U+0301 (ū́) LATIN SMALL LETTER U WITH MACRON AND ACUTE
U+016B U+0303 (ū̃) LATIN SMALL LETTER U WITH MACRON AND TILDE
U+0173 U+0301 (ų́) LATIN SMALL LETTER U WITH OGONEK AND ACUTE
U+0173 U+0303 (ų̃) LATIN SMALL LETTER U WITH OGONEK AND TILDE
U+1EBD (ẽ) LATIN SMALL LETTER E WITH TILDE
Many, if not all of these letters are limited for use in Lithuanian dialectology [304].
None.
The letters 'w' and 'x' are not part of the core alphabet for Lithuanian. However, they are included here as part of the core repertoire because of their use in representing foreign words, brand names and other common uses such as "www" in domain names, They are supported by the .lt ccTLD registry.
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.
This reference LGR for Lithuanian 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.
Language tag has been updated.
General references for the language:
Piesarskas, Bronius, & Bronius Svecevičus. 1991. Lietuvių-anglų kalbų žodynas:- Lithuanian-English dictionary. Vilnius: Mokslas. ISBN 5-420-00855-6
Wikipedia: "Lithuanian orthography",
http://en.wikipedia.org/wiki/Lithuanian_alphabet
Omniglot: "Lithuanian (lietuvių kalba)"
http://www.omniglot.com/writing/lithuanian.htm
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 | 46 | ||||
---|---|---|---|---|---|
Number of code points for each script |
|
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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.
See also the legend provided below the table.
Code Point |
Glyph | Script | Name | Ref | Required Context | Comment |
---|---|---|---|---|---|---|
U+002D | - | Common | HYPHEN-MINUS | [0], [100], [301], [401], [601] | not: hyphen-minus-disallowed | |
U+0030 | 0 | Common | DIGIT ZERO | [0], [100], [301], [401], [601] | ||
U+0031 | 1 | Common | DIGIT ONE | [0], [100], [301], [401], [601] | ||
U+0032 | 2 | Common | DIGIT TWO | [0], [100], [301], [401], [601] | ||
U+0033 | 3 | Common | DIGIT THREE | [0], [100], [301], [401], [601] | ||
U+0034 | 4 | Common | DIGIT FOUR | [0], [100], [301], [401], [601] | ||
U+0035 | 5 | Common | DIGIT FIVE | [0], [100], [301], [401], [601] | ||
U+0036 | 6 | Common | DIGIT SIX | [0], [100], [301], [401], [601] | ||
U+0037 | 7 | Common | DIGIT SEVEN | [0], [100], [301], [401], [601] | ||
U+0038 | 8 | Common | DIGIT EIGHT | [0], [100], [301], [401], [601] | ||
U+0039 | 9 | Common | DIGIT NINE | [0], [100], [301], [401], [601] | ||
U+0061 | a | Latin | LATIN SMALL LETTER A | [0], [100], [301], [401], [601] | ||
U+0062 | b | Latin | LATIN SMALL LETTER B | [0], [100], [301], [401], [601] | ||
U+0063 | c | Latin | LATIN SMALL LETTER C | [0], [100], [301], [401], [601] | ||
U+0064 | d | Latin | LATIN SMALL LETTER D | [0], [100], [301], [401], [601] | ||
U+0065 | e | Latin | LATIN SMALL LETTER E | [0], [100], [301], [401], [601] | ||
U+0066 | f | Latin | LATIN SMALL LETTER F | [0], [100], [301], [401], [601] | ||
U+0067 | g | Latin | LATIN SMALL LETTER G | [0], [100], [301], [401], [601] | ||
U+0068 | h | Latin | LATIN SMALL LETTER H | [0], [100], [301], [401], [601] | ||
U+0069 | i | Latin | LATIN SMALL LETTER I | [0], [100], [301], [401], [601] | ||
U+006A | j | Latin | LATIN SMALL LETTER J | [0], [100], [301], [401], [601] | ||
U+006B | k | Latin | LATIN SMALL LETTER K | [0], [100], [301], [401], [601] | ||
U+006C | l | Latin | LATIN SMALL LETTER L | [0], [100], [301], [401], [601] | ||
U+006D | m | Latin | LATIN SMALL LETTER M | [0], [100], [301], [401], [601] | ||
U+006E | n | Latin | LATIN SMALL LETTER N | [0], [100], [301], [401], [601] | ||
U+006F | o | Latin | LATIN SMALL LETTER O | [0], [100], [301], [401], [601] | ||
U+0070 | p | Latin | LATIN SMALL LETTER P | [0], [100], [301], [401], [601] | ||
U+0071 | q | Latin | LATIN SMALL LETTER Q | [0], [302], [402], [600] | ||
U+0072 | r | Latin | LATIN SMALL LETTER R | [0], [100], [301], [401], [601] | ||
U+0073 | s | Latin | LATIN SMALL LETTER S | [0], [100], [301], [401], [601] | ||
U+0074 | t | Latin | LATIN SMALL LETTER T | [0], [100], [301], [401], [601] | ||
U+0075 | u | Latin | LATIN SMALL LETTER U | [0], [100], [301], [401], [601] | ||
U+0076 | v | Latin | LATIN SMALL LETTER V | [0], [100], [301], [401], [601] | ||
U+0077 | w | Latin | LATIN SMALL LETTER W | [0], [302], [402], [600] | ||
U+0078 | x | Latin | LATIN SMALL LETTER X | [0], [302], [402], [600] | ||
U+0079 | y | Latin | LATIN SMALL LETTER Y | [0], [100], [301], [401], [601] | ||
U+007A | z | Latin | LATIN SMALL LETTER Z | [0], [100], [301], [401], [601] | ||
U+0105 | ą | Latin | LATIN SMALL LETTER A WITH OGONEK | [0], [100], [200], [301], [401], [604], [700] | ||
U+010D | č | Latin | LATIN SMALL LETTER C WITH CARON | [0], [100], [200], [301], [401], [604], [700] | ||
U+0117 | ė | Latin | LATIN SMALL LETTER E WITH DOT ABOVE | [0], [100], [200], [301], [401], [604], [700] | ||
U+0119 | ę | Latin | LATIN SMALL LETTER E WITH OGONEK | [0], [100], [200], [301], [401], [604], [700] | ||
U+012F | į | Latin | LATIN SMALL LETTER I WITH OGONEK | [0], [100], [200], [301], [401], [604], [700] | ||
U+0161 | š | Latin | LATIN SMALL LETTER S WITH CARON | [0], [100], [200], [301], [401], [604], [700] | ||
U+016B | ū | Latin | LATIN SMALL LETTER U WITH MACRON | [0], [100], [200], [301], [401], [604], [700] | ||
U+0173 | ų | Latin | LATIN SMALL LETTER U WITH OGONEK | [0], [100], [200], [301], [401], [604], [700] | ||
U+017E | ž | Latin | LATIN SMALL LETTER Z WITH CARON | [0], [100], [200], [301], [401], [604], [700] |
This LGR does not specify any variants.
The following table lists all named and implicit 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:Latn | 35 | {0061-007A 0105 010D 0117 0119 012F 0161 016B 0173 017E} | Any character tagged as Latin | |
implicit | Tag=sc:Zyyy | 11 | {002D 0030-0039} | Any character tagged as Common |
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 or variant.
Name | Regular Expression | Used as Trigger |
Anchor | Used as Context |
Ref | Comment |
---|---|---|---|---|---|---|
leading-combining-mark | (start)[∅=[[∅=\p{gc=Mn}] ∪ [∅=\p{gc=Mc}]]] |
✔ | [120] | RFC5891 restrictions on placement of combining marks | ||
hyphen-minus-disallowed | (((start))← ⚓︎)|(⚓︎ →((end)))|(((start)..\u002D)← ⚓︎) |
✔ | C | [120] | RFC5891 restrictions on placement of U+002D (-) | |
extended-cp | (start)(end) |
code points from the extended range |
Note: The following rules are defined but not used in this LGR: extended-cp.
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 |
The following lists the references cited for specific code points, variants, classes, rules or actions in this LGR.
[0] | The Unicode Consortium. The Unicode Standard, Version 6.3.0,
(Mountain View, CA: The Unicode Consortium, 2013. ISBN 978-1-936213-08-5)
http://www.unicode.org/versions/Unicode6.3.0/ Code points cited were originally encoded in Unicode Version 1.1 |
[100] | Internetstiftelsen i Sverige (IIS), "IDN Reference table for Lithuanian language"
https://github.com/dotse/IDN-ref-tables/blob/master/language-tables/lithuanian-lang-ref-table.txt |
[120] | RFC5891, Internationalized Domain Names in Applications (IDNA): Protocol http://tools.ietf.org/html/rfc5891 |
[200] | ISO/IEC 6937 Third Ed. 2001-12-17-
Information technology — Coded graphic character set for text communication — Latin alphabet: Table D.1 (p 35) Use of Latin alphabetic characters. This table lists only the characters outside the set a-z. Some obvious typographical errors have been corrected |
[301] | Everson, Michael. The Alphabets of Europe: "Lithuanian" http://www.evertype.com/alphabets/lithuanian.pdf Code points cited form the standard set |
[302] | Everson, Michael. The Alphabets of Europe: "Lithuanian" http://www.evertype.com/alphabets/lithuanian.pdf Code points cited are from an extended set |
[304] | Everson, Michael. The Alphabets of Europe: "Lithuanian" http://www.evertype.com/alphabets/lithuanian.pdf Code points cited are for dialectology |
[401] | The Unicode Consortium, Common Locale Data Repository (CLDR) Version 28 (2015-09-16) -
Locale Data Summary for Lithuanian [lt] http://www.unicode.org/cldr/charts/28/summary/lt.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 Lithuanian [lt] http://www.unicode.org/cldr/charts/28/summary/lt.html Code points and sequences cited are from the Auxiliary set |
[600] | Table "Reduced usage of the letters of the ISO Basic
Latin alphabet (A-Z) in various alphabets " in Wikipedia: "Latin alphabets"
https://en.wikipedia.org/wiki/Latin_alphabets accessed 2015-10-31. Code points cited are omitted from the basic Latin set A-Z according to the table. |
[601] | Table "Reduced usage of the letters
of the ISO Basic Latin alphabet (A-Z) in various alphabets " in Wikipedia: "Latin Alphabets" in https://en.wikipedia.org/wiki/Latin_alphabets accessed 2015-10-31. Code points cited from the basic set from A-Z are included in the alphabet according to the table. |
[604] | Wikipedia: "Latin Alphabets"
https://en.wikipedia.org/wiki/Latin_alphabets accessed 2015-10-31. The table only lists code points beyond A-Z |
[605] | Wikipedia: Lithuanian orthography https://en.wikipedia.org/wiki/Lithuanian_orthography Listed as in extended use |
[700] | Kaunas University of Technology (www.domreg.lt) "IDN"
http://www.domreg.lt/public?pg=8A7FB6&sp=idn&loc=en Code points cited are the non-ASCII code points listed by the registry for .lt domain |