pub fn parse_opts(args: &[String]) -> Option<OptRes> {
// Parse matches.
let opts = optgroups();
+ let binary = args.get(0).map(|c| &**c).unwrap_or("...");
let args = args.get(1..).unwrap_or(args);
let matches = match opts.parse(args) {
Ok(m) => m,
// Check if help was requested.
if matches.opt_present("h") {
// Show help and do nothing more.
- usage(&args[0], &opts);
+ usage(binary, &opts);
return None;
}