Reference LGR for language: Bosnian (bs-Cyrl)	lgr-second-level-bosnian-cyrillic-language-18may21-en

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
LGR Version	2 (Second Level Reference LGR)
Language	bs-Cyrl (Bosnian Language)
Unicode Version	6.3.0

1 Description
2 Repertoire
3 Variant Sets
4 Classes, Rules and Actions
4.1 Character Classes
4.2 Whole Label Evaluation and Context Rules
4.3 Actions
5 Table of References

1 Description

Label Generation Rules for the Bosnian language using the Cyrillic script

Overview

This document specifies a reference set of Label Generation Rules for Bosnian in Cyrillic script using a limited repertoire as appropriate for a second level domain.

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 (ь) CYRILLIC SMALL LETTER SOFT SIGN, U+044E (ю) CYRILLIC SMALL LETTER YU, and U+0461 (ѡ) 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 (ь) CYRILLIC SMALL LETTER SOFT SIGN
U+044E (ю) CYRILLIC SMALL LETTER YU
U+0461 (ѡ) CYRILLIC SMALL LETTER OMEGA

Extended code points

None.

Variants

None.

Character Classes

This LGR defines no named character classes.

Rules

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

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.

Methodology and Contributors

This reference LGR for Bosnian-Cyrillic 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.

Changes from Version 1

Language tag has been updated.

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

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.

2 Repertoire

Repertoire Summary

Number of elements in repertoire

Number of code points
for each script

Cyrillic	30
Common	11

Longest code point sequence

Repertoire by Code Point

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
U+002D	-	Common	HYPHEN-MINUS	[0]	not: hyphen-minus-disallowed
U+0030	0	Common	DIGIT ZERO	[0]
U+0031	1	Common	DIGIT ONE	[0]
U+0032	2	Common	DIGIT TWO	[0]
U+0033	3	Common	DIGIT THREE	[0]
U+0034	4	Common	DIGIT FOUR	[0]
U+0035	5	Common	DIGIT FIVE	[0]
U+0036	6	Common	DIGIT SIX	[0]
U+0037	7	Common	DIGIT SEVEN	[0]
U+0038	8	Common	DIGIT EIGHT	[0]
U+0039	9	Common	DIGIT NINE	[0]
U+0430	а	Cyrillic	CYRILLIC SMALL LETTER A	[0], [100], [130], [201], [301], [401]
U+0431	б	Cyrillic	CYRILLIC SMALL LETTER BE	[0], [100], [130], [201], [301], [401]
U+0432	в	Cyrillic	CYRILLIC SMALL LETTER VE	[0], [100], [130], [201], [301], [401]
U+0433	г	Cyrillic	CYRILLIC SMALL LETTER GHE	[0], [100], [130], [201], [301], [401]
U+0434	д	Cyrillic	CYRILLIC SMALL LETTER DE	[0], [100], [130], [201], [301], [401]
U+0435	е	Cyrillic	CYRILLIC SMALL LETTER IE	[0], [100], [130], [201], [301], [401]
U+0436	ж	Cyrillic	CYRILLIC SMALL LETTER ZHE	[0], [100], [130], [201], [301], [401]
U+0437	з	Cyrillic	CYRILLIC SMALL LETTER ZE	[0], [100], [130], [201], [301], [401]
U+0438	и	Cyrillic	CYRILLIC SMALL LETTER I	[0], [100], [130], [201], [301], [401]
U+043A	к	Cyrillic	CYRILLIC SMALL LETTER KA	[0], [100], [130], [201], [301], [401]
U+043B	л	Cyrillic	CYRILLIC SMALL LETTER EL	[0], [100], [130], [201], [301], [401]
U+043C	м	Cyrillic	CYRILLIC SMALL LETTER EM	[0], [100], [130], [201], [301], [401]
U+043D	н	Cyrillic	CYRILLIC SMALL LETTER EN	[0], [100], [130], [201], [301], [401]
U+043E	о	Cyrillic	CYRILLIC SMALL LETTER O	[0], [100], [130], [201], [301], [401]
U+043F	п	Cyrillic	CYRILLIC SMALL LETTER PE	[0], [100], [130], [201], [301], [401]
U+0440	р	Cyrillic	CYRILLIC SMALL LETTER ER	[0], [100], [130], [201], [301], [401]
U+0441	с	Cyrillic	CYRILLIC SMALL LETTER ES	[0], [100], [130], [201], [301], [401]
U+0442	т	Cyrillic	CYRILLIC SMALL LETTER TE	[0], [100], [130], [201], [301], [401]
U+0443	у	Cyrillic	CYRILLIC SMALL LETTER U	[0], [100], [130], [201], [301], [401]
U+0444	ф	Cyrillic	CYRILLIC SMALL LETTER EF	[0], [100], [130], [201], [301], [401]
U+0445	х	Cyrillic	CYRILLIC SMALL LETTER HA	[0], [100], [130], [201], [301], [401]
U+0446	ц	Cyrillic	CYRILLIC SMALL LETTER TSE	[0], [100], [130], [201], [301], [401]
U+0447	ч	Cyrillic	CYRILLIC SMALL LETTER CHE	[0], [100], [130], [201], [301], [401]
U+0448	ш	Cyrillic	CYRILLIC SMALL LETTER SHA	[0], [100], [130], [201], [301], [401]
U+0452	ђ	Cyrillic	CYRILLIC SMALL LETTER DJE	[0], [100], [130], [201], [301], [401]
U+0458	ј	Cyrillic	CYRILLIC SMALL LETTER JE	[0], [100], [130], [201], [301], [401]
U+0459	љ	Cyrillic	CYRILLIC SMALL LETTER LJE	[0], [100], [130], [201], [301], [401]
U+045A	њ	Cyrillic	CYRILLIC SMALL LETTER NJE	[0], [100], [130], [201], [301], [401]
U+045B	ћ	Cyrillic	CYRILLIC SMALL LETTER TSHE	[0], [100], [130], [201], [301], [401]
U+045F	џ	Cyrillic	CYRILLIC SMALL LETTER DZHE	[0], [100], [130], [201], [301], [401]

Legend

Code Point: A code point or code point sequence.
Glyph: The shape displayed depends on the fonts available to your browser.
Script: Shows the script property value from the Unicode Character Database. Combining marks may have the value Inherited and code points used with more than one script may have the value Common.
Name: Shows the character or sequence name from the Unicode Character Database.
Ref: Links to the references associated with the code point or sequence, if any.
Required Context: Link to a rule defining the required context a code point or sequence must satisfy. If prefixed by “not:” identifies a context that must not occur.
Comment: The comment as given in the XML file. However, if the comment for this row consists only of the code point or sequence name, it is suppressed in this view. By convention, comments starting with “=” denote an alias. If present, the symbol ⍟ marks a default item shared among a set of LGRs.

3 Variant Sets

This LGR does not specify any variants.

4 Classes, Rules and Actions

4.1 Character Classes

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:Cyrl	30	{0430-0438 043A-0448 0452 0458-045B 045F}		Any character tagged as Cyrillic
implicit	Tag=sc:Zyyy	11	{002D 0030-0039}		Any character tagged as Common

Legend

Members or Ranges: Lists the members of the class as code points (xxx) or as ranges of code points (xxx-yyy). Any class too numerous to list in full is elided with "...".
Tag=ttt: A named or implicit class defined by all code points that share the given tag value (ttt).
Implicit: An anonymous class implicitly defined based on tag value and for which there is no named equivalent.

4.2 Whole label evaluation and context rules

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

Legend

Used as Trigger: This rule triggers one of the actions listed below.
Used as Context: This rule defines a required or prohibited context for a code point C or variant V.
Anchor: This rule has a placeholder for the code point for which it is evaluated.
Regular Expression: A regular expression equivalent to the rule, shown in a modified notation as noted:
⚓︎ - context anchor: Placeholder for the actual code point when a context is evaluated. The code point must occur at the position corresponding to the anchor. Rules containing an anchor cannot be used as triggers.
(...)← - look-behind: If present encloses required context preceding the anchor.
→(..) - look-ahead: If present encloses required context following the anchor.
(... | ...) - choice: When there is more than one alternative in a rule, the choices are separated by the alternation operator (...|...).
start or end: (start) matches the start of the label; (end) matches the end of the label.
. - any code point: . matches any code point.
[\p{ }] - property character set: Set of all characters matching a given value for a Unicode property [\p{prop=val}]. Note: uppercase “\P” defines the complement of a property set.
∪, ∩, ∖, ∆ - set operators: Sets may be combined by set operators (∪ = union, ∩ = intersection, ∖ = difference, ∆ = symmetric difference).
∅= - empty set: Indicates that the following set is empty because of the result of set operations, or because none of its elements is part of the repertoire defined here. A rule with a non-optional empty set never matches.
(^$) - empty label: The regex (^$) matches the empty label. Used as a context rule, it always fails to match, thus disallowing the affected code point in any label. By convention, it is used for context rules that disable code points that are not part of the repertoire, yet explicitly listed in the LGR as excluded or for optional future extension.

Note: The following rules are defined but not used in this LGR: extended-cp.

4.3 Actions

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)

Legend

{...} - variant type set: In the “Rule/Variant Set” column, the notation {...} means a set of variant types.

5 Table of References

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) Any code point cited was originally encoded in Unicode Version 1.1
[100]	Internetstiftelsen i Sverige (IIS), Bosnian https://github.com/dotse/IDN-ref-tables/blob/master/language-tables/bosnian-lang-cyrillic-based-ref-table.txt
[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 2.1 Bosnian https://tools.ietf.org/html/rfc5992
[201]	Omniglot Bosnian http://www.omniglot.com/writing/bosnian.htm Code points cited form the standard set
[204]	Omniglot Bosnian http://www.omniglot.com/writing/bosnian.htm Code points cited are rare or archaic
[301]	Everson, Michael, The Alphabets of Europe, Bosnian http://www.evertype.com/alphabets/bosnian.pdf Code points cited form the standard set
[401]	The Unicode Consortium, Common Locale Data Repository - CLDR Version 28 (2015-09-16) - Locale Data Summary for Bosnian [bs]- // http://www.unicode.org/cldr/charts/28/summary/bs.html Code points cited are from the set of Main Letters

Table of Contents

1 Description

Label Generation Rules for the Bosnian language using the Cyrillic script

Overview

Repertoire

Excluded code points

Extended code points

Variants

Character Classes

Rules

Actions

Methodology and Contributors

Changes from Version 1

References

2 Repertoire

Repertoire Summary

Repertoire by Code Point

3 Variant Sets

4 Classes, Rules and Actions

4.1 Character Classes

4.2 Whole label evaluation and context rules

4.3 Actions

5 Table of References