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beckermarc merged 1 commit into from
Mar 13, 2025
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Improve i18n docs #1695

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3 changes: 2 additions & 1 deletion guides/i18n.md
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Expand Up @@ -238,7 +238,7 @@ In CAP Java the preserved locales can be configured via the <Config java>cds.loc
However this list is configured, ensure to have translations for the listed locales, as the fallback language will otherwise be `en`.
:::

#### Use Hyphens in File Names
#### Use Underscores in File Names

Due to the ambiguity regarding standards, for example, the usage of hyphens (`-`) in contrast to underscores (`_`), CAP follows the approach of the [SAP Translation Hub](https://discovery-center.cloud.sap/serviceCatalog/sap-translation-hub). Using that approach, CAP normalizes locales to **underscores** as our de facto standard.

Expand All @@ -247,6 +247,7 @@ In effect, this means:
- We support incoming locales as [language tags](https://www.ietf.org/rfc/bcp/bcp47.txt) using hyphens to separate sub tags <sup>1</sup>, for example `en-GB`.
- We always normalize these to underscores, which is `en_GB`.
- Always use underscores in filenames, for example, `i18n_en_GB.properties`
- Always use underscores when filling `LOCALE` columns of localized text tables (e.g. in CSV files).

<sup>1</sup> CAP Node.js also supports underscore separated tags, for example `en_GB`.

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