Source text and comments

moon source is UTF-8 and whitespace is not significant. A semicolon may separate statements on one line. // starts a line comment; /* ... */ comments may nest. A run of /// immediately before a declaration becomes its documentation.

Identifiers start with a letter or underscore, followed by letters, digits, or underscores. Comments may appear between tokens, so removing one never joins its neighbours.

/// Returns a small greeting.
fn greeting() -> string {
  /* outer /* nested */ comment */
  "Hello"
}

fn main() {
  let _name2 = greeting(); println(_name2) // line comment
}