Note: this merged file may be used for testing a label for conflicts with existing labels irrespective of their script. However, it can neither be used to conclusively establish the validity of any label nor to generate the set of allocatable variant labels.
This document, together with the set of element LGRs, specifies an integrated set of Label Generation Rules for the Root Zone. For more details on the Root Zone LGRs and their development see "Root Zone Label Generation Rules - LGR-2: Overview and Summary [LGR-2]. The format of this file follows [RFC 7940].
The Label Generation Rules for the Root Zone (LGR-2) are integrated from the following set of script-specific element LGRs:
Each element LGR represents in full the underlying, proposed script-based LGR cited, except for changes required by the integration process or for uniformity of presentation. See Section 3, "Integration and Contents of LGR-2" in [LGR-2].
This merged LGR contains the union of the repertoire, variant mappings and Whole Label Evaluation (WLE) rules as described in the following sections. Data that are necessarily script-dependent, such as the type for variant mappings have been removed or replaced by default values.
When processing an applied for label, this merged LGR presents the complete data and specification needed for conflict checking with any existing label, independent of script, while each script-specific element LGR presents the complete data and specification to determine the validity and full set of allocatable variants for the label, when applied for under that script. See also section 5 in [LGR-2].
The repertoire of the integrated Root Zone LGR is the cumulative repertoire of all the Element LGRs that have been integrated into this version. Those repertoires, in turn were developed based on [MSR-2], which is a subset of Unicode 6.3 [Unicode 6.3].
As a Root Zone LGR, the repertoire includes neither digits nor the HYPHEN-MINUS.
For further details, see Section 3.2.1, in [LGR-2].
Each code point or range is tagged with the script or scripts that the code point is used with, and a reference to the Unicode Standard in which the code point was first encoded, see "References" below.
The variant mappings in this LGR are the union of the variant mappings from all the Element LGRs that have been integrated into this version of the Root Zone LGR. Because the disposition of variant labels, for example as "allocatable", is specific to each script, they cannot be expressed in the script-neutral context of this integrated LGR. Instead. all variant mappings are labeled as "blocked" in this document as needed for conflict checking. See also Section 3.2.2 in [LGR-2].
This merged LGR includes the cumulative set of character classes from all the Element LGRs that have been integrated into this version of the Root Zone LGR. See Section 3.2.3, in [LGR-2].
This merged LGR includes the cumulative set of Whole Label Evaluation rules and actions from all the Element LGRs that have been integrated into this version of the Root Zone LGR. See Section 3.2.4, in [LGR-2]. See also the comments given for each rule or action.
The integrated LGR includes the set of required default WLE rules and actions applicable to the Root Zone and defined in [MSR-2]. They are marked with ⍟.
The Root Zone Label Generation Rules - LGR-2 [LGR-2] were integrated by the Integration Panel [IP], from a set of proposals for script-based root zone LGRs developed by community-based Generation Panels [GPS] in an open process with multipe public consultations defined in [Procedure] and [Guidelines]. For more information on the methodology and contributors see [LGR-2].
In the listing of the repertoire, references starting at [0] refer to Unicode Standard versions in which the corresponding code points were initially encoded. References [100] and above correspond to the script-specific LGRs that include the repertoire item. Repertoire items may have more than one reference.
In addition the following references are cited in this document:
For more details for references [100] and up and [0] and up refer to the Table of References below, as well as to [LGR-2].
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