{"ast_node_type":"function","tokens":[{"end":86,"kind":"keyword","start":0,"text":"fn"}]}
fn make_output(matches: &getopts::Matches) -> (Option<PathBuf>, Option<OutFileName>) {
/// Extract output directory and file from matches.
    let odir = matches.opt_str("out-dir").map(|o| PathBuf::from(&o));