Gujarati
Root Zone Label Generation Rules, 5th Edition
Summary
| Version | 5 — Root Zone LGR for the Gujarati Script |
|---|---|
| Date | |
| Tag |
und-Gujr (Gujarati)
|
| Unicode | 11.0.0 |
| Scope | DNS root zone |
| Source file | rz-lgr-5-gujarati-script-26may22-en.xml (17.0kb) |
Description
Root Zone Label Generation Rules for the Gujarati Script
Overview
This file contains Label Generation Rules (LGR) for the Gujarati script for the Root Zone. For more details on this LGR and additional background on the script, see “Proposal for a Gujarati Script Label Generation Ruleset for the Root Zone” [Proposal-Gujarati]. 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].
Repertoire
According to Section 5, “Repertoire” in [Proposal-Gujarati], the Gujarati LGR contains 65 single code points. This repertoire covers multiple languages written using the Gujarati script and ranging from 1 to 4 on the [EGIDS] scale.
The repertoire is based on [MSR-5], which is a subset of [Unicode 11.0].
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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 points is used, one or more other character categories, and one or more references documenting sufficient justification for inclusion in the repertoire; see “References” below.
Variants
According to Section 6, “Variants”, in [Proposal-Gujarati], there are no characters or character sequences in the Gujarati repertoire that look exactly alike. Hence no variants have been defined.
However, Gujarati has some cases of confusingly similar combinations which have been listed in Appendix A in [Proposal-Gujarati].
Character Classes
Gujarati is an alphasyllabary and the heart of the writing system is the Akshar. This is the unit which is instinctively recognized by users of the script. The writing system of Gujarati could be summed up as composed of Consonants, the Implicit Vowel Killer: Halant, Vowels, Anusvara, Candrabindu, Nukta, Visarga and Avagraha.
Consonants: Gujarati consonants contain an implicit vowel schwa /ə/. The traditional classification categorizes them according to their phonetic properties. There are 5 Varga groups (classes) and one non-Varga group. Each varga, which corresponds to a particular stop, contains five consonants classified as per their properties. The first four consonants are classified on the basis of Voicing and Aspiration and the last is the corresponding nasal. More details in Section 3.4.1, “The Consonants” of the [Proposal-Gujarati].
Halant: All consonants contain the implicit vowel (schwa). A special sign is needed to denote that this implicit vowel is stripped off. This is known as the Halant (્). The Halant thus joins two consonants and creates conjuncts, which generally combine 2 to 4 consonants. In rare cases the Halant can join up to 5 consonants. More details in Section 3.4.2, “The Implicit Vowel Killer: Halant” in [Proposal-Gujarati].
Vowels and Matras: Separate symbols exist for all Vowels, which are either pronounced independently at the beginning or attached to a consonant. To indicate the latter (other than the implicit one), a Vowel modifier (matra) is attached to the consonant. Since the consonant has a built-in schwa, there are equivalent Matras for all vowels excepting the અ (U+0A85). More details in Section 3.4.3, “Vowels” in [Proposal-Gujarati].
Anusvara: In Gujarati, the Anusvara has a dual function. On the one hand, it acts as homorganic nasal, that is, it replaces a conjunct group of a Nasal Consonant+Halant+Consonant belonging to that particular varga. On the other hand, before a non-varga consonant the anusvara represents a nasal sound. Gujarati and its dialects prefer the anusvara to the corresponding half-nasal. More details in Section 3.4.4, “The Anusvara” in [Proposal-Gujarati].
Nukta: Traditionally Gujarati does not admit the Nukta. Gujarati grammarians in their inventory of the Gujarati alphabet do not admit this diacritic. However, the Nukta is used to represent content where Perso-Arabic characters have to be transliterated. It follows specific consonants listed in set C1. More details in Section 3.4.6, “Nukta” in [Proposal-Gujarati].
Visarga and Avagraha: The Visarga is frequently used in Sanskrit and represents a sound very close to /h/, as in દુઃખ /du:kh/ sorrow, unhappiness. It is used sparingly in Gujarati with a few words borrowed from Sanskrit. The Avagraha is rarely used and excluded from the LGR. More details in Section 3.4.7, “Visarga and Avagraha” in [Proposal-Gujarati].
Whole Label Evaluation (WLE) and Context Rules
Default Whole Label Evaluation Rules and Actions
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 ⍟. The default prohibition on leading combining marks is equivalent to ensuring that a label only starts with a consonant or vowel.
Gujarati-specific Rules
These rules have been drafted to ensure that the prospective Gujarati label conforms to akshar formation norms as desired in Gujarati script. These norms are exclusively presented as context rules.
The following symbols are used in the WLE rules:
C → Consonant
M → Matra
V → Vowel
B → Anusvara
X → Visarga
H → Halant/Virama
N → Nukta
C1 → Consonants used with Nukta
The rules are:
- 1. N: must be preceded by any of the specific set of Consonants (C1)
- 2. H: must be preceded either by C or N
- 3. X: must be preceded by any of V, C, N or M
- 4. B: must be preceded by any of V, C, N or M
- 5. M: must be preceded either by C or N
More details in Section 7, “Whole Label Evaluation Rules (WLE)” in [Proposal-Gujarati].
Methodology and Contributors
The Root Zone LGR for the Gujarati script was developed by the Neo-Brahmi Generation Panel (NBGP) the members of which have experience in linguistics and computational linguistics in a wide variety of languages written with Neo-Brahmi scripts. Under the Neo-Brahmi Generation Panel, there are nine scripts belonging to separate Unicode blocks. Each of these scripts has been assigned a separate LGR, with the Neo-Brahmi GP ensuring that the fundamental philosophy behind building each LGR is in sync with all other Brahmi-derived scripts. For further details on methodology and contributors, see Sections 4 and 8 in [Proposal-Gujarati], as well as [RZ-LGR-5-Overview].
References
The following general references are cited in this document:
- [MSR-5]
- Integration Panel, “Maximal Starting Repertoire — MSR-5 Overview and Rationale”, 24 June 2021, https://www.icann.org/en/system/files/files/msr-5-overview-24jun21-en.pdf
- [EGIDS]
- Lewis and Simons, “EGIDS: Expanded Graded Intergenerational Disruption Scale,” documented in [SIL-Ethnologue] and summarized here: https://en.wikipedia.org/wiki/Expanded_Graded_Intergenerational_Disruption_Scale_(EGIDS)
- [Proposal-Gujarati]
- Neo-Brahmi Generation Panel, “Proposal for a Gujarati Script Root Zone Label Generation Ruleset (LGR)”, 6 March 2019, https://www.icann.org/en/system/files/files/proposal-gujarati-lgr-06mar19-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
- [RZ-LGR-5-Overview]
- Integration Panel, “Root Zone Label Generation Rules (RZ LGR-5): Overview and Summary”, 26 May 2022, https://www.icann.org/sites/default/files/lgr/rz-lgr-5-overview-26may22-en.pdf
- [RZ-LGR-5]
- Integration Panel, “Root Zone Label Generation Rules (RZ-LGR-5)”, 26 May 2022 (XML), https://www.icann.org/sites/default/files/lgr/rz-lgr-5-common-26may22-en.xml
non-normative HTML presentation: https://www.icann.org/sites/default/files/lgr/rz-lgr-5-common-26may22-en.html - [SIL-Ethnologue]
- David M. Eberhard, Gary F. Simons & Charles D. Fennig (eds.). 2021. Ethnologue: Languages of the World, Twenty fourth edition. Dallas, Texas: SIL International. Online version available as https://www.ethnologue.com
- [Unicode 11.0]
- 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/
For references consulted particularly in designing the repertoire for the Gujarati script for the Root Zone please see details in the Table of References below. Reference [0] refers to the Unicode Standard version in which the corresponding code points were initially encoded. Reference [101] corresponds to a source given in [Proposal-Gujarati] justifying the inclusion of the corresponding code points. Entries in the table may have multiple source reference values.
Repertoire
| Glyph | Code point | Tags and context | Variants |
|---|---|---|---|
| ં | U+0A82 GUJARATI SIGN ANUSVARA 0 101 |
|
|
| ઃ | U+0A83 GUJARATI SIGN VISARGA 0 101 |
|
|
| અ | U+0A85 GUJARATI LETTER A 0 101 |
|
|
| આ | U+0A86 GUJARATI LETTER AA 0 101 |
|
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| ઇ | U+0A87 GUJARATI LETTER I 0 101 |
|
|
| ઈ | U+0A88 GUJARATI LETTER II 0 101 |
|
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| ઉ | U+0A89 GUJARATI LETTER U 0 101 |
|
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| ઊ | U+0A8A GUJARATI LETTER UU 0 101 |
|
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| ઋ | U+0A8B GUJARATI LETTER VOCALIC R 0 101 |
|
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| ઌ | U+0A8C GUJARATI LETTER VOCALIC L 6 101 |
|
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| ઍ | U+0A8D GUJARATI VOWEL CANDRA E 0 101 |
|
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| એ | U+0A8F GUJARATI LETTER E 0 101 |
|
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| ઐ | U+0A90 GUJARATI LETTER AI 0 101 |
|
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| ઑ | U+0A91 GUJARATI VOWEL CANDRA O 0 101 |
|
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| ઓ | U+0A93 GUJARATI LETTER O 0 101 |
|
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| ઔ | U+0A94 GUJARATI LETTER AU 0 101 |
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| ક | U+0A95 GUJARATI LETTER KA 0 101 |
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| ખ | U+0A96 GUJARATI LETTER KHA 0 101 |
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| ગ | U+0A97 GUJARATI LETTER GA 0 101 |
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| ઘ | U+0A98 GUJARATI LETTER GHA 0 101 |
|
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| ઙ | U+0A99 GUJARATI LETTER NGA 0 101 |
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| ચ | U+0A9A GUJARATI LETTER CA 0 101 |
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| છ | U+0A9B GUJARATI LETTER CHA 0 101 |
|
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| જ | U+0A9C GUJARATI LETTER JA 0 101 |
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| ઝ | U+0A9D GUJARATI LETTER JHA 0 101 |
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| ઞ | U+0A9E GUJARATI LETTER NYA 0 101 |
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| ટ | U+0A9F GUJARATI LETTER TTA 0 101 |
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| ઠ | U+0AA0 GUJARATI LETTER TTHA 0 101 |
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| ડ | U+0AA1 GUJARATI LETTER DDA 0 101 |
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| ઢ | U+0AA2 GUJARATI LETTER DDHA 0 101 |
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| ણ | U+0AA3 GUJARATI LETTER NNA 0 101 |
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| ત | U+0AA4 GUJARATI LETTER TA 0 101 |
|
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| થ | U+0AA5 GUJARATI LETTER THA 0 101 |
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| દ | U+0AA6 GUJARATI LETTER DA 0 101 |
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| ધ | U+0AA7 GUJARATI LETTER DHA 0 101 |
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| ન | U+0AA8 GUJARATI LETTER NA 0 101 |
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| પ | U+0AAA GUJARATI LETTER PA 0 101 |
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| ફ | U+0AAB GUJARATI LETTER PHA 0 101 |
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| બ | U+0AAC GUJARATI LETTER BA 0 101 |
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| ભ | U+0AAD GUJARATI LETTER BHA 0 101 |
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| મ | U+0AAE GUJARATI LETTER MA 0 101 |
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| ય | U+0AAF GUJARATI LETTER YA 0 101 |
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| ર | U+0AB0 GUJARATI LETTER RA 0 101 |
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| લ | U+0AB2 GUJARATI LETTER LA 0 101 |
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| ળ | U+0AB3 GUJARATI LETTER LLA 0 101 |
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| વ | U+0AB5 GUJARATI LETTER VA 0 101 |
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| શ | U+0AB6 GUJARATI LETTER SHA 0 101 |
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| ષ | U+0AB7 GUJARATI LETTER SSA 0 101 |
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| સ | U+0AB8 GUJARATI LETTER SA 0 101 |
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| હ | U+0AB9 GUJARATI LETTER HA 0 101 |
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| ઼ | U+0ABC GUJARATI SIGN NUKTA 0 101 |
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| ા | U+0ABE GUJARATI VOWEL SIGN AA 0 101 |
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| િ | U+0ABF GUJARATI VOWEL SIGN I 0 101 |
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| ી | U+0AC0 GUJARATI VOWEL SIGN II 0 101 |
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| ુ | U+0AC1 GUJARATI VOWEL SIGN U 0 101 |
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| ૂ | U+0AC2 GUJARATI VOWEL SIGN UU 0 101 |
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| ૃ | U+0AC3 GUJARATI VOWEL SIGN VOCALIC R 0 101 |
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| ૄ | U+0AC4 GUJARATI VOWEL SIGN VOCALIC RR 0 101 |
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| ૅ | U+0AC5 GUJARATI VOWEL SIGN CANDRA E 0 101 |
|
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| ે | U+0AC7 GUJARATI VOWEL SIGN E 0 101 |
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| ૈ | U+0AC8 GUJARATI VOWEL SIGN AI 0 101 |
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| ૉ | U+0AC9 GUJARATI VOWEL SIGN CANDRA O 0 101 |
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| ો | U+0ACB GUJARATI VOWEL SIGN O 0 101 |
|
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| ૌ | U+0ACC GUJARATI VOWEL SIGN AU 0 101 |
|
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| ્ | U+0ACD GUJARATI SIGN VIRAMA 0 101 |
|
Character classes
Named sets of code points that the rules below refer to.
| Name | Definition |
|---|---|
C |
{tag Consonant}
Any Gujarati consonant
|
V |
{tag Vowel}
Any Gujarati vowel letter
|
M |
{tag Matra}
Any Gujarati vowel sign
|
N |
{tag Nukta}
The Gujarati Nukta
|
C1 |
{tag C1}
Consonants used with Gujarati Nukta
|
Rules
Conditions evaluated against a whole label, or against the context around a
single code point. The notation borrows from regular expressions:
^ and $ anchor to the start and end of a label,
. matches any code point, (?= ) and
(?<= ) look ahead and behind, and * and
+ repeat. Two symbols are specific to rulesets:
◆ is the code point being tested, and
⟨name⟩ refers to another rule.
leading-combining-mark MSR default
Default WLE rule matching labels with leading combining marks
^ ({gc:Mn} ∪ {gc:Mc})
Structure
-
^start -
({gc:Mn} ∪ {gc:Mc})union-
{gc:Mn}class -
{gc:Mc}class
-
Referenced by 1 definition
- action 1 (invalid)
follows-specific-C
Section 7, WLE 1: N must be preceded by a specific set of Cs
(?<= {C1} ) ◆
Structure
-
(?<= {C1} )look-behind-
{C1}class
-
-
◆anchor
Referenced by 1 definition
- context of U+0ABC
follows-C-or-N
Section 7, WLE 2: Halant must be preceded by C or N; WLE 5: M: must be preceded by C or N
(?<= ( {C} │ {N} ) ) ◆
Structure
-
(?<= ( {C} │ {N} ) )look-behind-
( {C} │ {N} )choice-
{C}class -
{N}class
-
-
-
◆anchor
Referenced by 14 definitions
- context of U+0ABE
- context of U+0ABF
- context of U+0AC0
- context of U+0AC1
- context of U+0AC2
- context of U+0AC3
- context of U+0AC4
- context of U+0AC5
- context of U+0AC7
- context of U+0AC8
- context of U+0AC9
- context of U+0ACB
follows-V-C-N-or-M
Section 7, WLE 3 and WLE 4: Visarga and Anusvara must be preceded by V, C, N or M
(?<= ( {V} │ {C} │ {N} │ {M} ) ) ◆
Structure
-
(?<= ( {V} │ {C} │ {N} │ {M} ) )look-behind-
( {V} │ {C} │ {N} │ {M} )choice-
{V}class -
{C}class -
{N}class -
{M}class
-
-
-
◆anchor
Referenced by 2 definitions
- context of U+0A82
- context of U+0A83
Actions
Actions are evaluated in the order shown. The first action whose conditions match determines the disposition of the label.
| # | Disposition | Conditions |
|---|---|---|
| 1 |
invalid
|
label matches leading-combining-mark labels with leading combining marks are invalid MSR default |
| 2 |
invalid
|
any variant is out-of-repertoire-var any variant label with a code point out of repertoire is invalid MSR default |
| 3 |
blocked
|
any variant is blocked any variant label containing blocked variants is blocked MSR default |
| 4 |
allocatable
|
all variants are allocatable variant labels with all variants allocatable are allocatable MSR default |
| 5 |
valid
|
any label default catch all (default action) MSR default |
References
| Ref | Source |
|---|---|
| 0 | The Unicode Standard 1.1 |
| 6 | The Unicode Standard 4.0 |
| 101 | Omniglot, “Gujarati” https://www.omniglot.com/writing/gujarati.htm (Accessed on 6 Jan. 2018) |