This file contains Label Generation Rules (LGR) for the Armenian script for the Root Zone. For more details on this LGR and additional background on the script, see “Proposal for a Armenian Script Root Zone LGR” [Proposal-Armenian]. This file is one of a set of LGR files that together form an integrated LGR for the DNS Root Zone [RZ-LGR-5]. The format of this file follows [RFC 7940].
According to [Proposal-Armenian], the repertoire of 38 code points is based on [MSR-5], which is a subset of [Unicode 11.0]. The range of permissible code points is U+0561–U+0586 and supports the Armenian language as written in the Armenian script.
Note that U+0587 is not included in the repertoire because it is DISALLOWED in IDNA2008 [RFC 5892] and therefore not permissible in IDNs.
Code points outside this range that are listed in this file are targets for out-of-script variants and are identified by a reflexive (identity) variant of type “out-of-repertoire-var”. They do not form part of the repertoire.
As part of the Root Zone, this LGR includes neither decimal digits nor the HYPHEN-MINUS.
Each code point is tagged with the script or scripts with which the code point is used, and one or more references documenting sufficient justification for inclusion in the repertoire; see “References” below. For code points that are part of the repertoire, comments identify the languages using the code point.
According to Section 6, “Variants” in [Proposal-Armenian], there are no variants defined within the Armenian script. However, integration with the Latin and Greek LGRs does introduce some in-script variants due to cross-script variant transitivity.
In particular, the Armenian LGR inherits the following in-script variant as result of integration:
Additional Variants: This LGR inherits additional blocked cross-script variants by integration; they may not be listed here unless they result in in-script variants. However, for consistency, the variant mappings among the related scripts Armenian, Cyrillic, Greek and Latin are listed in full. See the merged, Common LGR [RZ-LGR-5] for details of all applicable cross-script variants, including any not listed here; always use the Common LGR for determining cross-script collisions of labels.
Where homoglyphs or near homoglyphs with Armenian code points exist in the Latin, Greek and Cyrillic scripts, out-of-repertoire variants are defined with a comment “Cross-script homoglyph” or “Cross-script near homoglyph” respectively. As result of integration, including the effecs of cross-script transitivity, the number of cross-script variants listed for these scripts is larger than defined in Section 6, “Variants” in [Proposal-Armenian]. These are generally not marked.
Variant Disposition: All variants are of type “blocked”, making labels that differ only by these variants mutually exclusive: whichever label containing either of these variants is chosen earlier would be delegated, while any other equivalent labels should be blocked.
This LGR does not define allocatable variants.
The specification of variants in the Root Zone LGR follows the guidelines in [RFC 8228].
The LGR does not define character classes.
The LGR includes the set of required default WLE rules and actions applicable to the Root Zone and defined in [MSR-5]. They are marked with ⍟.
This LGR does not define rules specific to Armenian.
The Root Zone LGR for the Armenian script was developed by the Armenian Generation Panel. For methodology and contributors, see Sections 4 and 8 of [Proposal-Armenian], as well as [RZ-LGR-5-Overview]. After initial review by the Integration Panel, this LGR was deferred until it could be considered in the context of all related scripts. The LGR has been updated to reflect inherited variants resulting from integration.
The following general references are cited in this document:
For references consulted particularly in designing the repertoire for the Armenian script for the Root Zone please see details in the Table of References below. Reference [0] refers to the Unicode Standard version in which corresponding code points were initially encoded. Reference [100] corresponds to a source given in [Proposal-Armenian] for justifying the inclusion of the corresponding code points. Entries in the table may have multiple source reference values.
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