Registers (or extends) the catalog for a locale. Locale keys are matched case-insensitively and by primary subtag ("fr-CA" falls back to "fr"). Use this to override a built-in locale or add a new one.
Registers (or extends) the catalog for a locale. Locale keys are matched case-insensitively and by primary subtag ("fr-CA" falls back to "fr"). Use this to override a built-in locale or add a new one.