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fix(l10n): Fix plural issue with different locale and language #38917

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Jun 22, 2023
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fix(l10n): Fix plural issue with different locale and language #38917

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7 changes: 6 additions & 1 deletion lib/private/L10N/L10N.php
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Original file line number Diff line number Diff line change
Expand Up @@ -215,7 +215,12 @@ public function getTranslations(): array {
public function getIdentityTranslator(): IdentityTranslator {
if (\is_null($this->identityTranslator)) {
$this->identityTranslator = new IdentityTranslator();
$this->identityTranslator->setLocale($this->getLocaleCode());
// We need to use the language code here instead of the locale,
// because Symfony does not distinguish between the two and would
// otherwise e.g. with locale "Czech" and language "German" try to
// pick a non-existing plural rule, because Czech has 4 plural forms
// and German only 2.
$this->identityTranslator->setLocale($this->getLanguageCode());
}

return $this->identityTranslator;
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9 changes: 9 additions & 0 deletions tests/lib/L10N/L10nTest.php
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Expand Up @@ -85,6 +85,15 @@ public function testCzechPluralTranslations() {
$this->assertEquals('5 oken', (string)$l->n('%n window', '%n windows', 5));
}

public function testGermanPluralWithCzechLocaleTranslations() {
$transFile = \OC::$SERVERROOT.'/tests/data/l10n/de.json';
$l = new L10N($this->getFactory(), 'test', 'de', 'cs_CZ', [$transFile]);

$this->assertEquals('1 Datei', (string) $l->n('%n file', '%n files', 1));
$this->assertEquals('2 Dateien', (string) $l->n('%n file', '%n files', 2));
$this->assertEquals('5 Dateien', (string) $l->n('%n file', '%n files', 5));
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Before the patch this here fails:

1) Test\L10N\L10nTest::testGermanPluralWithCzechLocaleTranslations
Symfony\Component\Translation\Exception\InvalidArgumentException: Unable to choose a translation for "%count% Datei|%count% Dateien" with locale "cs_CZ" for value "5". Double check that this translation has the correct plural options (e.g. "There is one apple|There are %count% apples").

}

public function dataPlaceholders(): array {
return [
['Ordered placeholders one %s two %s', 'Placeholder one 1 two 2'],
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