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Merged
merged 3 commits into from
May 29, 2025
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Normative: Add Intl.Locale.prototype.variants #960

merged 3 commits into from
May 29, 2025
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gibson042
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@gibson042 gibson042 commented Feb 14, 2025 •
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Fixes #900

test262 PR: tc39/test262#4474

@sffc sffc moved this to Priority Issues in ECMA-402 Meeting Topics Mar 3, 2025
FrankYFTang
FrankYFTang reviewed Mar 6, 2025
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spec/locale.html Outdated
1. Perform ? RequireInternalSlot(_loc_, [[InitializedLocale]]).
1. Let _variantsString_ be GetLocaleVariants(_loc_.[[Locale]]).
1. Let _variantsList_ be StringSplitToList(_variantsString_, *"-"*).
1. Return CreateArrayFromList(_variantsList_).
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It might benefit from a note, but nothing more—alphabetization is already required by use of CanonicalizeUnicodeLocaleId in the Intl.Locale constructor.

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If we do this, then how about setting variants in option bag them?

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If we do this, then how about setting variants in option bag them?

Good question, and I think the answer is "yes". This also interacts with the design question about representing variants as an array of strings or as a single dash-separated string, and I'm increasingly inclined towards the latter.

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sffc commented Mar 10, 2025

TG2 discussion: https://github.com/tc39/ecma402/blob/main/meetings/notes-2025-03-06.md#normative-add-localeprototypegetvariants-960

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sffc commented Apr 3, 2025

TG2 discussion, focused on the motivation: https://github.com/tc39/ecma402/blob/main/meetings/notes-2025-04-03.md#normative-add-localeprototypegetvariants-960

eemeli
eemeli requested changes May 8, 2025
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In accord with #960 (comment) and TG2 discussion, this will be exposed as a string-returning variants getter to align with the other subtag-based properties (language, baseName, script, region, calendar, etc.).

@gibson042 gibson042 force-pushed the gh-900-locale-getvariants branch from c001a65 to a606142 Compare May 8, 2025 20:21
gibson042 added a commit to gibson042/test262 that referenced this pull request May 8, 2025
@gibson042
Add tests for Intl.Locale.prototype.variants
ab9c77e 
Ref tc39/ecma402#960
@gibson042 gibson042 mentioned this pull request May 8, 2025
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@gibson042 gibson042 changed the title Normative: Add Locale.prototype.getVariants Normative: Add Intl.Locale.prototype.getVariants May 9, 2025
@gibson042 gibson042 changed the title Normative: Add Intl.Locale.prototype.getVariants Normative: Add Intl.Locale.prototype.variants May 9, 2025
@ryzokuken ryzokuken added has consensus Has consensus from TC39-TG2 has tests and removed needs tests needs review labels May 13, 2025
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This reached consensus in TC39 plenary.

@gibson042 gibson042 merged commit e8c995a into tc39:main May 29, 2025
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gibson042 added a commit to gibson042/test262 that referenced this pull request May 29, 2025
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Add tests for Intl.Locale.prototype.variants
b6fd532 
Ref tc39/ecma402#960
anba
anba reviewed May 29, 2025
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spec/locale.html
1. Let _variants_ be GetLocaleVariants(_baseName_).
1. Let _variants_ be ? GetOption(_options_, *"variants"*, ~string~, ~empty~, GetLocaleVariants(_baseName_)).
1. If _variants_ is not *undefined*, then
1. If _variants_ cannot be matched by the <code>unicode_variant_subtag</code> Unicode locale nonterminal, throw a *RangeError* exception.
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unicode_variant_subtag matches a single variant subtag. That means new Intl.Locale("kl-tunumiit-kleinsch") will now always throw a RangeError. Probably needs StringSplitToList(variants, "-") and then check unicode_variant_subtag on all elements of the returned List.

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#1006

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Ugh, nice catch. Fix: #1007.

@sffc sffc mentioned this pull request May 30, 2025
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gibson042 added a commit to gibson042/ecma402 that referenced this pull request May 30, 2025
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Editorial: Fix incorrect application of unicode_variant_subtag agai…
b3ab8c9 
…nst a subtag sequence

Fixes tc39#960
@gibson042 gibson042 mentioned this pull request May 30, 2025
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Ms2ger pushed a commit to gibson042/test262 that referenced this pull request Jun 4, 2025
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Add tests for Intl.Locale.prototype.variants
9da80fa 
Ref tc39/ecma402#960
Ms2ger pushed a commit to tc39/test262 that referenced this pull request Jun 4, 2025
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Add tests for Intl.Locale.prototype.variants
c2bfc5b 
Ref tc39/ecma402#960
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sffc commented Jun 14, 2025

TG2 discussion in May 2025: https://github.com/tc39/ecma402/blob/main/meetings/notes-2025-05-08.md#normative-add-localeprototypegetvariants-960

@linusg linusg mentioned this pull request Jun 14, 2025
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sosukesuzuki added a commit to sosukesuzuki/WebKit that referenced this pull request Jun 20, 2025
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[JSC] Implement Intl.Locale.prototype.variants getter
c6bde4d 
https://bugs.webkit.org/show_bug.cgi?id=294755

Reviewed by NOBODY (OOPS!).

tc39/ecma402#960 added `Intl.Locale.prototype.variants`
to the ECMAScript specification. The test262 test suite has also been updated [1].

This patch implements `Intl.Locale.prototype.variants` for JSC.

[1]: tc39/test262#4474

* JSTests/stress/intl-locale-prototype-variants.js: Added.
(shouldBe):
(shouldThrow):
* JSTests/test262/expectations.yaml:
* Source/JavaScriptCore/runtime/CommonIdentifiers.h:
* Source/JavaScriptCore/runtime/IntlLocale.cpp:
(JSC::LocaleIDBuilder::overrideLanguageScriptRegionVariants):
(JSC::IntlLocale::initializeLocale):
(JSC::IntlLocale::variants):
(JSC::LocaleIDBuilder::overrideLanguageScriptRegion): Deleted.
* Source/JavaScriptCore/runtime/IntlLocale.h:
* Source/JavaScriptCore/runtime/IntlLocalePrototype.cpp:
(JSC::JSC_DEFINE_CUSTOM_GETTER):
@sosukesuzuki sosukesuzuki mentioned this pull request Jun 20, 2025
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webkit-commit-queue pushed a commit to sosukesuzuki/WebKit that referenced this pull request Jun 21, 2025
@sosukesuzuki
[JSC] Implement Intl.Locale.prototype.variants getter
b8b32fe 
https://bugs.webkit.org/show_bug.cgi?id=294755

Reviewed by Yusuke Suzuki.

tc39/ecma402#960 added `Intl.Locale.prototype.variants`
to the ECMAScript specification. The test262 test suite has also been updated [1].

This patch implements `Intl.Locale.prototype.variants` for JSC.

[1]: tc39/test262#4474

* JSTests/stress/intl-locale-prototype-variants.js: Added.
(shouldBe):
(shouldThrow):
* JSTests/test262/expectations.yaml:
* Source/JavaScriptCore/runtime/CommonIdentifiers.h:
* Source/JavaScriptCore/runtime/IntlLocale.cpp:
(JSC::LocaleIDBuilder::overrideLanguageScriptRegionVariants):
(JSC::IntlLocale::initializeLocale):
(JSC::IntlLocale::variants):
(JSC::LocaleIDBuilder::overrideLanguageScriptRegion): Deleted.
* Source/JavaScriptCore/runtime/IntlLocale.h:
* Source/JavaScriptCore/runtime/IntlLocalePrototype.cpp:
(JSC::JSC_DEFINE_CUSTOM_GETTER):

Canonical link: https://commits.webkit.org/296467@main
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@anba anba anba left review comments

@FrankYFTang FrankYFTang FrankYFTang left review comments

@eemeli eemeli eemeli approved these changes

@ryzokuken ryzokuken ryzokuken approved these changes

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Why is there no Intl.Locale.prototype.variants?
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@gibson042 @FrankYFTang @sffc @eemeli @anba @ryzokuken