Error in diary-mail-entries example script?

[Colin Baxter]

There is an example script given in the function `diary-mail-entries'
which reads:

--8<---------------cut here---------------start------------->8---
#!/usr/bin/emacs -script
;; diary-rem.el - run the Emacs diary-reminder

(setq diary-mail-days 3
      diary-file "/path/to/diary.file"
      calendar-date-style 'european
      diary-mail-addr "user@host.name")

(diary-mail-entries)

# diary-rem.el ends here
--8<---------------cut here---------------end--------------->8---

This only works for me if the calendar-date-style is not quoted but
instead placed between double quotes "".

Colin Baxter.