pub fn parse_cusd(line: &str) -> Option<Cusd>Expand description
Parse one logical +CUSD line (prefix case-insensitive). The string may hold
commas, CR/LF and quotes; the closing quote is the last one on the line. A trailing
OK glued to the line after the string or the DCS is ignored; an OK inside an
unclosed string is kept as text. None if this is not a +CUSD line.