code: func IdentNeedsQuotes(ident string) bool {
  	// check if this identifier is a keyword
  	tok := Lookup(ident)
  	if tok != IDENT {
  		return true
  	}
  	for i, r := range ident {
  		if i == 0 && !isIdentFirstChar(r) {
  			return true
  		} else if i > 0 && !isIdentChar(r) {
  			return true
  		}
  	}
  	return false
  }
docs: // IdentNeedsQuotes returns true if the ident string given would require quotes.