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Adjusting NumberFormat's numberingSystem validation #1

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Jan 28, 2020
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Adjusting NumberFormat's numberingSystem validation #1

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5 changes: 3 additions & 2 deletions spec/numberformat.html
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Original file line number Diff line number Diff line change
Expand Up @@ -41,7 +41,7 @@ <h1>InitializeNumberFormat ( _numberFormat_, _locales_, _options_ )</h1>
</p>

<p>
The following algorithm refers to <a href="http://www.unicode.org/reports/tr35/#Unicode_locale_identifier">UTS 35's Unicode Locale Identifier grammar</a>.
The following algorithm refers to the `type` nonterminal from <a href="http://www.unicode.org/reports/tr35/#Unicode_locale_identifier">UTS 35's Unicode Locale Identifier grammar</a>.
</p>

<emu-alg>
Expand All @@ -55,7 +55,8 @@ <h1>InitializeNumberFormat ( _numberFormat_, _locales_, _options_ )</h1>
1. Set _opt_.[[localeMatcher]] to _matcher_.
1. Let _numberingSystem_ be ? GetOption(_options_, `"numberingSystem"`, `"string"`, *undefined*, *undefined*).
1. If _numberingSystem_ is not *undefined*, then
1. If _numberingSystem_ does not match the `(3*8alphanum) *("-" (3*8alphanum))` sequence, throw a *RangeError* exception.
1. If _numberingSystem_ does not match the Unicode Locale Identifier `type` nonterminal, throw a *RangeError* exception.
1. Set _numberingSystem_ to the result of mapping _numberingSystem_ to lower case as as specified in <emu-xref href="#sec-case-sensitivity-and-case-mapping"></emu-xref>.
1. Set _opt_.[[nu]] to _numberingSystem_.
1. Let _localeData_ be %NumberFormat%.[[LocaleData]].
1. Let _r_ be ResolveLocale(%NumberFormat%.[[AvailableLocales]], _requestedLocales_, _opt_, %NumberFormat%.[[RelevantExtensionKeys]], _localeData_).
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