This document specifies a set of Label Generation Rules (LGR) for the Norwegian 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 Norwegian Language” [Ref-LGR-no-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.
Most references converge on 43 (36 + 7) Latin code points with a few additional extensions.
There is no IDN table published in the IANA Repository of IDN Practices by a .no ccTLD, but the registry provides IDN information [700].
Norwegian is not a single language. Instead, there are two closely related but different written languages (Bokmål and Nynorsk). As both of them are written in the same country and the differences are relatively minor for purposes of IDNs, this LGR covers both, by extending the repertoire slightly.
Letters documented in some references but not included:
U+00E2 LATIN SMALL LETTER A WITH CIRCUMFLEX
U+00EF LATIN SMALL LETTER I WITH DIAERESIS
U+00F9 LATIN SMALL LETTER U WITH GRAVE
U+00FB LATIN SMALL LETTER U WITH CIRCUMFLEX
U+01CE LATIN SMALL LETTER A WITH CARON
A number of 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 such extended code points. To support extended single code points or code point sequences, delete the context “extended-cp” from their repertoire definition.
The following extended code points in particular are needed to write Northern Sami, a minority language in Norway.
U+010D LATIN SMALL LETTER C WITH CARON
U+0111 LATIN SMALL LETTER D WITH STROKE
U+0144 LATIN SMALL LETTER N WITH ACUTE ACCENT (alternate for N with tilde in Lule Sami)
U+014B LATIN SMALL LETTER ENG
U+0161 LATIN SMALL LETTER S WITH CARON
U+0167 LATIN SMALL LETTER T WITH STROKE
U+017E LATIN SMALL LETTER Z WITH CARON
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 Norwegian 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 Norwegian Language [Ref-LGR-no-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:
Norsk språkråd, in Icelandic Council for Standardization. 1992. Nordic cultural requirements on information technology. Reykjavík: Staðlaráð Íslands. ISBN 9979-9004-3-1
Hovdenak, Marit, et al. 1994. Nynorskordboka: definisjons- og rettskrivings- ordbok. Oslo: Det norske samlaget. ISBN 82-521-4121-8- The repertoire covers Bokmål and Nynorsk
Wikipedia: “Norwegian orthography”, https://en.wikipedia.org/wiki/Norwegian_alphabet
Omniglot: “Norwegian (norsk)” https://www.omniglot.com/writing/norwegian.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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