OptionParser#complete

# File tmp/rubies/ruby-3.0.5/lib/optparse.rb, line 1811
def complete(typ, opt, icase = false, *pat)
  if pat.empty?
    search(typ, opt) {|sw| return [sw, opt]} # exact match or...
  end
  ambiguous = catch(:ambiguous) {
    visit(:complete, typ, opt, icase, *pat) {|o, *sw| return sw}
  }
  exc = ambiguous ? AmbiguousOption : InvalidOption
  raise exc.new(opt, additional: self.method(:additional_message).curry[typ])
end