Alternate Mapping for Locales

[JE4GLE]

I have my locales configured as follows:

lunetics_locale:
  strict_mode: false
  strict_match: true
  allowed_locales:
    - de_DE
    - en_US

I'm using the xx_XX format instead of xx, because I might want to create separate versions for en_US and en_GB later. This format is commonly used in computing environments to adapt software to the user's linguistic, cultural, and regional preferences. It can influence the formatting of dates, numbers, currency, and more, as well as the language used for text display in user interfaces.

Unfortunately, this doesn't allow for locales like en being detected. In this case, the default (de_DE) is used.
I'm also relying on strict_match, because my application only supports the defined locales.

My request is the following:

If there is no exact mapping available, match only the first part.

// Not match found
if (strpos($locale, '_') !== false) {
  $newLocale = explode('_', $locale)[0];
  // Retry with $newLocale
}

** Another solution would be:**

Add a map of locales, which can serve as a mapping. For example:

lunetics_locale:
  ...
  locale_mapping:
    de: de_DE
    en: en_US

This would allow en and en_XX being redirected to en_US.