From catalog/rfc3986-uri.abnf rule: unreserved
Definition
unreserved = ALPHA / DIGIT / "-" / "." / "_" / "~"
Info
- Rulename
- unreserved
- Dependencies
- ALPHA, DIGIT, unreserved
- Used Builtins
- ALPHA, DIGIT
Alphabet
-…. 0…9 A…Z _ a…z ~
Translations
Railroad Diagram
Swift Regular Expression
[\--.0-9A-Z_a-z~]
POSIX Extended Regular Expression
[\--.0-9A-Z_a-z~]