Set

Name

A character in attribute Copy

Original expression

$rfc2231:attribute-char Copy

Normalized

[!\u0023-\u0024\u0026+\u002D-.0-9A-Z\u005E-~] Copy

Perl

[!\x23-\x24\x26+\x2D-.0-9A-Z\x5E-~] Copy

Complemetary

[Notes] [RFC2231]

The set definition is contained in sets.json data file.