identifier for language or languoid per the Internet Engineering Task Force; can include a primary language subtag, subtags for script, region, variant, extension, or private-use. Format: 2 or 3 letters, followed by "-" if subtags present
- language tag IETF
- BCP 47 language code
- language code
- ISO language code IETF implementation
| Language | Label | Description | Also known as |
|---|---|---|---|
| default for all languages | No label defined |
–
|
|
| English | IETF language tag |
identifier for language or languoid per the Internet Engineering Task Force; can include a primary language subtag, subtags for script, region, variant, extension, or private-use. Format: 2 or 3 letters, followed by "-" if subtags present |
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Data type
External identifier
Statements
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1 reference
3 July 2022
https://r12a.github.io/app-subtags/index?check=$1
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Constraints
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([a-z]{2,3}(-[A-Z][a-z]{3})?(-([A-Z]{2}|[0-9]{3}))?(-[a-z0-9]{5,8})*(-u-sd-[a-z]{2}[a-z0-9]{1,3})?|i-[a-z]{3,8}|art-x-[a-z]{4,8})
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([a-z]{2,3}(-[a-zA-Z0-9]{1,8})*|i-[a-z]{3,8})|
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