This document specifies a set of Label Generation Rules (LGR) for the Latvian language using a language-specific repertoire for the second level domain or domains identified above. The format of this file follows [RFC 7940]. This LGR is adapted from the “Reference LGR for the Second Level for the Latvian Language” [Ref-LGR-lv-Latn], for details, see Change History below.
Standalone LGR: This LGR is designed to be used in a zone that does not cater to IDNs other than those valid under this LGR. This LGR lacks features that would allow its use in the context of another LGR in the same zone, and it may contain other features incompatible with such use.
Nearly all references converge on 39 Latin code points with no extensions or exclusions.
There is no IDN table published in the IANA Repository of IDN Practices for the .lv ccTLD but the IDN extensions are spelled out in the registry’s policy [700]. They match the repertoire specified here.
None.
None.
The four letters ‘q’, ‘w’, ‘x’ and ‘y’ are not part of the core alphabet for Latvian. 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. The two letters o-macron and r-cedilla which, while no longer part of the modern alphabet, are said to still be in use in the diaspora [605] and therefore included in the core repertoire.
No variants are applicable when using the LGR in a standalone fashion.
This LGR does not define named character classes.
By default, the LGR includes the rules and actions to implement the following restrictions mandated by the IDNA protocol. They are marked with ⍟.
This LGR includes the default actions for LGRs as well as the action needed to invalidate labels with misplaced combining marks. They are marked with ⍟. For a description see [RFC 7940].
The LGR in this document has been adapted from the corresponding Reference LGR for the Second Level. The Second Level Reference LGR for the Latvian Language was developed by Michel Suignard and Asmus Freytag, including input by Michael Everson, Nicholas Ostler, and Wil Tan, and based on multiple open public consultations.
Language tag has been updated.
Unicode Version has been updated.
This version modifies the Second Level Reference LGR for the Latvian Language [Ref-LGR-lv-Latn] by injecting the complete (maximal) set of cross-repertoire variants, including any imposed by transitivity. Injected variants are marked by special comments. Any character classes, context and WLE rules required for testing are also imported. In all other respects, description or annotations have not been updated to reflect the injected variants. Any LGR elements that might pose a possible conflict when the LGR is used with the Common LGR for cross-repertoire variant resolution are clearly marked. All modifications are carried out mechanically; there may be an occasional context rule or similar that is injected because its definition relates to some repertoire element even though it can never be triggered by any label valid under the modified LGR.
General references for the language:
Latvijas Valsts Standarts LVS 24-93, Informācijas tehnoloģija, valodas lietošana datoros: Latviešu valoda datoriem, 1993
Turkina, E. 1982. Latviešu-angļu vārdnīca = Latvian-English dictionary. Rīga: Avots
Wikipedia: “Latvian orthography”, https://en.wikipedia.org/wiki/Latvian_alphabet
Omniglot: “Latvian (latviešu valoda)” https://www.omniglot.com/writing/latvian.htm
Other references cited in this document:
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. Entries in the table may have multiple source reference values. In the listing of whole label evaluation and context rules, reference [150] indicates the source for common rules. For more details, see the Table of References below.
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