Bosnian (Cyrillic)

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Label Generation Rules for the Bosnian language using the Cyrillic script

Overview

This document specifies a set of Label Generation Rules (LGR) for Bosnian in Cyrillic script 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 Bosnian (Cyrillic) Language” [Ref-LGR-bs-Cyrl], 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.

Repertoire

All references converge on 30 Cyrillic code points (23 + 7 as defined by RFC 5992 [130]), identical to the Serbian Cyrillic set.

There is no IDN table published in the IANA Repository of IDN Practices by .ba (Bosnia-Herzegovina cctld). Because the repertoire is identical to Serbian Cyrillic, any IDNA practice for Bosnian is likely to follow the same guidelines as for Serbian.

There is some historic use of U+044C CYRILLIC SMALL LETTER SOFT SIGN, U+044E CYRILLIC SMALL LETTER YU, and U+0461 CYRILLIC SMALL LETTER OMEGA, attested in [201] but included in a repertoire with terms that call for their exclusion in modern use: “Some of the letters used in the Modern Bosnian Cyrillic alphabet were not used in this version, and there are some extra letters that are no longer used." The 3 letters mentioned above belong to these ‘extra’ letters.

Excluded code points

Letters documented in some references but not included:

• U+044C CYRILLIC SMALL LETTER SOFT SIGN

• U+044E CYRILLIC SMALL LETTER YU

• U+0461 CYRILLIC SMALL LETTER OMEGA

Extended code points

None.

Any code points outside the Bosnian (Cyrillic) Language repertoire that are targets for out-of-repertoire variants would be included here only if the variant is listed in this file. In this case they are identified as a reflexive (identity) variant of type “out-of-repertoire-var”. Whether or not they are listed, they do not form part of the repertoire.

Variants

There are no variants defined between Cyrillic letters.

No ASCII Variants: Note that this LGR does not contain definitions for “blocked” variants for letters that look indistinguishable from ASCII letters (homoglyphs). If concurrent use of LDH labels is desired, the resulting conflicts can be handled by using the “Common LGR” in processing. For details, see Section 3, “Use of Multiple Reference LGRs in the Same Zone” in [Level-2-Overview].

Character Classes

This LGR does not define named character classes.

Rules

Common Rules

By default, the LGR includes the rules and actions to implement the following restrictions mandated by the IDNA protocol. They are marked with ⍟.

• 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 RFC 5891 [150]. 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 RFC 5891 [150].

Actions

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].

Variant-related actions included to facilitate integration as appropriate.

Methodology and Contributors

The LGR in this document has been adapted from the corresponding Reference LGR for the Second Level. The Second Level Reference LGR for the Bosnian (Cyrillic) 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.

Changes from Version Dated 10 October 2016

Language tag has been updated.

Changes from Version Dated 18 May 2021

Unicode Version has been updated.

Changes from Version Dated 25 October 2024

Adopted from the Second Level Reference LGR for the Bosnian (Cyrillic) Language [Ref-LGR-bs-Cyrl] without normative changes.

References

General reference for the language:

• Uzicanin, Nikolina. 1996. Hippocrene compact dictionary: Bosnian-English English-Bosnian. New York: Hippocrene Books. ISBN 0-7818-0499-X

Other references cited in this document:

[Level-2-Overview]

Internet Corporation for Assigned Names and Numbers, (ICANN),“Reference Label Generation Rules (LGR) for the Second Level: Overview and Summary” (PDF), (Los Angeles, California: ICANN, 25 October 2024), https://www.icann.org/en/system/files/files/level2-lgr-overview-summary-25oct24-en.pdf

[RFC 7940]

Davies, K. and A. Freytag, “Representing Label Generation Rulesets Using XML”, RFC 7940, August 2016, https://www.rfc-editor.org/info/rfc7940

[RFC 8228]

A. Freytag, “Guidance on Designing Label Generation Rulesets (LGRs) Supporting Variant Labels”, RFC 8228, August 2017, https://www.rfc-editor.org/info/rfc8228

[Ref-LGR-bs-Cyrl]

ICANN, Second Level Reference Label Generation Rules for the Bosnian (Cyrillic) Language (bs-Cyrl), 25 October 2024 (XML) https://www.icann.org/sites/default/files/packages/lgr/lgr-second-level-bosnian-cyrillic-language-25oct24-en.xml non-normative HTML presentation: https://www.icann.org/sites/default/files/packages/lgr/lgr-second-level-bosnian-cyrillic-language-25oct24-en.html

[Unicode 11.0.0]

The Unicode Consortium. The Unicode Standard, Version 11.0.0, (Mountain View, CA: The Unicode Consortium, 2018. ISBN 978-1-936213-19-1) https://www.unicode.org/versions/Unicode11.0.0/

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.