pub fn encode(text: &str) -> Result<Vec<u8>, char>Expand description
Text as HP bytes: ASCII and Latin-1 as themselves, the math and Greek
characters of 128-159 from their Unicode forms (x̄ is x with a
combining macron). Err names the first character the set lacks
(C1 controls and anything beyond U+00FF that is not one of 128-159).