[#5B9667126E56AF668D5129CCC2504719FA911E06]
The sub-delims character set
constexpr grammar::lut_chars const sub_delim_chars = "!$&()*+,;=\x27";
Character sets are used with rules and the functions grammar::find_if and grammar::find_if_not .
system::result< decode_view > = grammar::parse( "Program%20Files", pct_encoded_rule( sub_delim_chars ) );
sub-delims = "!" / "$" / "&" / "'" / "(" / ")"
/ "*" / "+" / "," / ";" / "="