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Added support for ICU message format (#2745) · PrismJS/prism@bf4e7ba · GitHub

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Added support for ICU message format (#2745)
1 parent d85e30d commit bf4e7ba

11 files changed

Lines changed: 866 additions & 2 deletions

‎components.js‎

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‎components.json‎

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"title": "Icon",
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"owner": "Golmote"
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},
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"icu-message-format": {
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"title": "ICU Message Format",
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"owner": "RunDevelopment"
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},
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"idris": {
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"title": "Idris",
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"alias": "idr",

‎components/prism-icu-message-format.js‎

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// https://unicode-org.github.io/icu/userguide/format_parse/messages/
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// https://unicode-org.github.io/icu-docs/apidoc/released/icu4j/com/ibm/icu/text/MessageFormat.html
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(function (Prism) {
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/**
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* @param {string} source
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* @param {number} level
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* @returns {string}
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*/
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function nested(source, level) {
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if (level <= 0) {
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return /[]/.source;
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} else {
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return source.replace(/<SELF>/g, function () { return nested(source, level - 1) });
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}
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}
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var stringPattern = /'[{}:=,](?:[^']|'')*'(?!')/;
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var escape = {
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pattern: /''/,
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greedy: true,
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alias: 'operator'
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};
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var string = {
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pattern: stringPattern,
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greedy: true,
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inside: {
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'escape': escape
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}
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};
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var argumentSource = nested(
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/\{(?:[^{}']|'(?![{},'])|''|<STR>|<SELF>)*\}/.source
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.replace(/<STR>/g, function () { return stringPattern.source; }),
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8
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);
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var nestedMessage = {
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pattern: RegExp(argumentSource),
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inside: {
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'message': {
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pattern: /^(\{)[\s\S]+(?=\}$)/,
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lookbehind: true,
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inside: null // see below
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},
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'message-delimiter': {
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pattern: /./,
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alias: 'punctuation'
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}
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}
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};
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Prism.languages['icu-message-format'] = {
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'argument': {
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pattern: RegExp(argumentSource),
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greedy: true,
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inside: {
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'content': {
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pattern: /^(\{)[\s\S]+(?=\}$)/,
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lookbehind: true,
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inside: {
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'argument-name': {
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pattern: /^(\s*)[^{}:=,\s]+/,
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lookbehind: true
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},
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'choice-style': {
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// https://unicode-org.github.io/icu-docs/apidoc/released/icu4c/classicu_1_1ChoiceFormat.html#details
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pattern: /^(\s*,\s*choice\s*,\s*)\S(?:[\s\S]*\S)?/,
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lookbehind: true,
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inside: {
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'punctuation': /\|/,
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'range': {
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pattern: /^(\s*)[+-]?(?:\d+(?:\.\d*)?|\u221e)\s*[<#\u2264]/,
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lookbehind: true,
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inside: {
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'operator': /[<#\u2264]/,
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'number': /\S+/
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}
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},
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rest: null // see below
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}
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},
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'plural-style': {
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// https://unicode-org.github.io/icu-docs/apidoc/released/icu4j/com/ibm/icu/text/PluralFormat.html#:~:text=Patterns%20and%20Their%20Interpretation
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pattern: /^(\s*,\s*(?:plural|selectordinal)\s*,\s*)\S(?:[\s\S]*\S)?/,
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lookbehind: true,
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inside: {
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'offset': /^offset:\s*\d+/,
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'nested-message': nestedMessage,
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'selector': {
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pattern: /=\d+|[^{}:=,\s]+/,
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inside: {
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'keyword': /^(?:zero|one|two|few|many|other)$/
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}
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}
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}
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},
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'select-style': {
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// https://unicode-org.github.io/icu-docs/apidoc/released/icu4j/com/ibm/icu/text/SelectFormat.html#:~:text=Patterns%20and%20Their%20Interpretation
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pattern: /^(\s*,\s*select\s*,\s*)\S(?:[\s\S]*\S)?/,
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lookbehind: true,
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inside: {
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'nested-message': nestedMessage,
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'selector': {
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pattern: /[^{}:=,\s]+/,
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inside: {
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'keyword': /^other$/
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}
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}
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}
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},
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'keyword': /\b(?:choice|plural|select|selectordinal)\b/,
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'arg-type': {
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pattern: /\b(?:number|date|time|spellout|ordinal|duration)\b/,
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alias: 'keyword'
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},
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'arg-skeleton': {
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pattern: /(,\s*)::[^{}:=,\s]+/,
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lookbehind: true
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},
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'arg-style': {
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pattern: /(,\s*)(?:short|medium|long|full|integer|currency|percent)(?=\s*$)/,
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lookbehind: true
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},
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'arg-style-text': {
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pattern: RegExp(/(^\s*,\s*(?=\S))/.source + nested(/(?:[^{}']|'[^']*'|\{(?:<SELF>)?\})+/.source, 8) + '$'),
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lookbehind: true,
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alias: 'string'
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},
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'punctuation': /,/
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}
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},
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'argument-delimiter': {
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pattern: /./,
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alias: 'operator'
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}
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}
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},
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'escape': escape,
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'string': string
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};
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nestedMessage.inside.message.inside = Prism.languages['icu-message-format'];
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Prism.languages['icu-message-format'].argument.inside.content.inside['choice-style'].inside.rest = Prism.languages['icu-message-format'];
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}(Prism));

‎components/prism-icu-message-format.min.js‎

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‎examples/prism-icu-message-format.html‎

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<h2>Full example</h2>
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<pre><code>https://unicode-org.github.io/icu/userguide/format_parse/messages/
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{gender_of_host, select,
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female {
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{num_guests, plural, offset:1
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=0 {{host} does not give a party.}
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=1 {{host} invites {guest} to her party.}
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=2 {{host} invites {guest} and one other person to her party.}
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other {{host} invites {guest} and # other people to her party.}}}
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male {
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{num_guests, plural, offset:1
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=0 {{host} does not give a party.}
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=1 {{host} invites {guest} to his party.}
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=2 {{host} invites {guest} and one other person to his party.}
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other {{host} invites {guest} and # other people to his party.}}}
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other {
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{num_guests, plural, offset:1
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=0 {{host} does not give a party.}
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=1 {{host} invites {guest} to their party.}
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=2 {{host} invites {guest} and one other person to their party.}
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other {{host} invites {guest} and # other people to their party.}}}}</code></pre>

‎plugins/show-language/prism-show-language.js‎

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"hpkp": "HTTP Public-Key-Pins",
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"hsts": "HTTP Strict-Transport-Security",
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"ichigojam": "IchigoJam",
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"icu-message-format": "ICU Message Format",
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"idr": "Idris",
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"ignore": ".ignore",
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"gitignore": ".gitignore",

‎plugins/show-language/prism-show-language.min.js‎

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‎tests/languages/icu-message-format/arg-skeleton_feature.test‎

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At {1,time,::jmm} on {1,date,::dMMMM}, there was {2} on planet {3,number,integer}.
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----------------------------------------------------
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[
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"At ",
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["argument", [
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["argument-delimiter", "{"],
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["content", [
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["argument-name", "1"],
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["punctuation", ","],
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["arg-type", "time"],
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["punctuation", ","],
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["arg-skeleton", "::jmm"]
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]],
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["argument-delimiter", "}"]
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]],
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" on ",
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["argument", [
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["argument-delimiter", "{"],
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["content", [
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["argument-name", "1"],
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["punctuation", ","],
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["arg-type", "date"],
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["punctuation", ","],
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["arg-skeleton", "::dMMMM"]
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]],
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["argument-delimiter", "}"]
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]],
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", there was ",
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["argument", [
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["argument-delimiter", "{"],
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["content", [
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["argument-name", "2"]
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]],
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["argument-delimiter", "}"]
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]],
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" on planet ",
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["argument", [
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["argument-delimiter", "{"],
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["content", [
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["argument-name", "3"],
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["punctuation", ","],
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["arg-type", "number"],
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["punctuation", ","],
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["arg-style", "integer"]
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]],
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["argument-delimiter", "}"]
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]],
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"."
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]

‎tests/languages/icu-message-format/choice-style_feature.test‎

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The disk {1} contains {0,choice,0#no files|1#one file|1<{0,number,integer} files}
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{3, choice, -1#is negative| 0#is zero or fraction | 1#is one |1.0<is 1+ |2#is two |2<is more than 2.}
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----------------------------------------------------
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[
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"The disk ",
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["argument", [
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["argument-delimiter", "{"],
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["content", [
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["argument-name", "1"]
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]],
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["argument-delimiter", "}"]
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]],
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" contains ",
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["argument", [
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["argument-delimiter", "{"],
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["content", [
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["argument-name", "0"],
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["punctuation", ","],
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["keyword", "choice"],
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["punctuation", ","],
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["choice-style", [
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["range", [
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["number", "0"],
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["operator", "#"]
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]],
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"no files",
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["punctuation", "|"],
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["range", [
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["number", "1"],
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["operator", "#"]
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]],
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"one file",
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["punctuation", "|"],
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["range", [
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["number", "1"],
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["operator", "<"]
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]],
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["argument", [
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["argument-delimiter", "{"],
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["content", [
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["argument-name", "0"],
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["punctuation", ","],
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["arg-type", "number"],
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["punctuation", ","],
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["arg-style", "integer"]
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]],
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["argument-delimiter", "}"]
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]],
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" files"
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]]
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]],
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["argument-delimiter", "}"]
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]],
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["argument", [
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["argument-delimiter", "{"],
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["content", [
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["argument-name", "3"],
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["punctuation", ","],
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["keyword", "choice"],
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["punctuation", ","],
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["choice-style", [
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["range", [
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["number", "-1"],
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["operator", "#"]
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]],
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"is negative",
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["punctuation", "|"],
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["range", [
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["number", "0"],
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["operator", "#"]
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]],
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"is zero or fraction ",
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["punctuation", "|"],
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["range", [
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["number", "1"],
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["operator", "#"]
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]],
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"is one ",
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["punctuation", "|"],
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["range", [
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["number", "1.0"],
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["operator", "<"]
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]],
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"is 1+ ",
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["punctuation", "|"],
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["range", [
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["number", "2"],
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["operator", "#"]
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]],
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"is two ",
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["punctuation", "|"],
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["range", [
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["number", "2"],
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["operator", "<"]
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]],
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"is more than 2."
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]]
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]],
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["argument-delimiter", "}"]
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]]
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]

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