From catalog/rfc5646-langtag.abnf rule: script
Definition
script = 4ALPHA
Info
- Rulename
- script
- Dependencies
- ALPHA, script
- Used Builtins
- ALPHA
Alphabet
A…Z a…z
Translations
Railroad Diagram
Swift Regular Expression
[A-Za-z][A-Za-z][A-Za-z][A-Za-z]
POSIX Extended Regular Expression
[A-Za-z][A-Za-z][A-Za-z][A-Za-z]