Rename language identifiers to support /usr/share/i18n/SUPPORTED

[buhtz]

Follow-up of debian#1103042

Current BIT is using language codes (for gettext po/mo files) following "more modern" IETF language tags. These are not supported by gettext/locales.

Example use case is a user setup its Debian GNU/Linux to "Serbian (Latin)". The locales system is using sr@Latin to identify this. BIT doesn't recognize it because it is using `sr_Latin" for "Serbian (Latin)".

Thank you to the Guillem Jover from Debian, explaining this to me. guillem@debian.org

ToDo

• Weblate is not able to add sr@Latin as "New language". But try how Weblate sync ("Discard" button) react to a new po file in upstream repo named sr@Latin.po.

[guillemj]

Hi!

BTW the name for the gettext locale should be sr@latin (lowercase), I don't think gettext/glibc do any normalization over that, but I've not tried/checked, but better to stick with the existing name. (Also not important, but the currently used name in backintime is sr_Latn, where the name is expected to be missing the i.)

[buhtz]

BTW the name for the gettext locale should be sr@latin (lowercase), I don't think gettext/glibc do any normalization over that, but I've not tried/checked, but better to stick with the existing name.

Yes, I will use that SUPPORTED file as a reference.

sr_Latn, where the name is expected to be missing the i.)

The official tag is without the 'i'.