Function melib::email::parser::generic::ctext

fn ctext(input: &[u8]) -> IResult<&[u8], ()>

ctext           =   %d33-39 /          ; Printable US-ASCII
                     %d42-91 /          ;  characters not including
                     %d93-126 /         ;  "(", ")", or "\"
                     obs-ctext