code: func flagHackLookup(flagName string) string {
  	// e.g. "-d" for "--driver"
  	flagPrefix := flagName[1:3]
  
  	// TODO: Should we support -flag-name (single hyphen) syntax as well?
  	for i, arg := range os.Args {
  		if strings.Contains(arg, flagPrefix) {
  			// format '--driver foo' or '-d foo'
  			if arg == flagPrefix || arg == flagName {
  				if i+1 < len(os.Args) {
  					return os.Args[i+1]
  				}
  			}
  
  			// format '--driver=foo' or '-d=foo'
  			if strings.HasPrefix(arg, flagPrefix+"=") || strings.HasPrefix(arg, flagName+"=") {
  				return strings.Split(arg, "=")[1]
  			}
  		}
  	}
  
  	return ""
  }
docs: // The following function is needed because the CLI acrobatics that we're doing
  // (with having an "outer" and "inner" function each with their own custom
  // settings and flag parsing needs) are not well supported by codegangsta/cli.
  //
  // Instead of trying to make a convoluted series of flag parsing and relying on
  // codegangsta/cli internals work well, we simply read the flags we're
  // interested in from the outer function into module-level variables, and then
  // use them from the "inner" function.
  //
  // I'm not very pleased about this, but it seems to be the only decent
  // compromise without drastically modifying codegangsta/cli internals or our
  // own CLI.