From catalog/rfc9110-http.abnf rule: product-version
Definition
product-version = token
token = 1*tchar
tchar = "!" / "#" / "$" / "%" / "&" / "'" / "*" / "+" / "-" / "." / "^" / "_" / "`" / "|" / "~" / DIGIT / ALPHA
Info
- Rulename
- product-version
- Dependencies
- ALPHA, DIGIT, tchar, token, product-version
- Used Builtins
- ALPHA, DIGIT
Alphabet
! #…' *…+ -…. 0…9 A…Z ^…z | ~
Translations
Railroad Diagram
Swift Regular Expression
[!#-'*-+\--.0-9A-Z\^-z|~][!#-'*-+\--.0-9A-Z\^-z|~]*
POSIX Extended Regular Expression
[!#-'*-+\--.0-9A-Z\^-z|~][!#-'*-+\--.0-9A-Z\^-z|~]*