7. Insert-sgml-header程式之範例

讀者在撰寫一份 Linux Documentation Project 文件時，可以使用下列程式來啟動自動插入自訂的頁首。

透過一 mini-buffer，上述程式會要求讀者提供一些或許必要的資訊。

它會先詢問要輸出的標題是什麼，若您沒有提供，則頁首就不會顯現標題。再來是日期，作者，作者的電子郵件帳號與 home page （最後兩項可隨意填入）。

接著它會詢問翻譯者的名字。若無，請直接鍵入 Return。若有，程式就會接著詢問譯者的電子郵件帳號及 home page （同樣也是隨意填入）。

再來它會把您的輸入存入 current buffer，包括任何您輸入的資訊格式，及摘要和第一章的標籤。之後它會將游標導向您要鍵入摘要的的地方。

(defun insert-sgml-header ()
  "Inserts the header for a LinuxDoc document"
  (interactive)
  (let (title author email home translator email-translator home-translator date 
              starting-point)
    (setq title (read-from-minibuffer "Title: "))
    (if (> (length title) 0)
        (progn 
          (setq date (read-from-minibuffer "Date: ")
                author (read-from-minibuffer "Author: ")
                email (read-from-minibuffer "Author e-mail: ")
                home (read-from-minibuffer "Author home page: http://")
                translator (read-from-minibuffer "Translator: "))
          (insert "<!doctype linuxdoc system>\n<article>\n<title>")
          (insert title)
          (insert "</title>\n<author>\nAuthor: ") (insert author) (insert "<newline>\n")
          (if (> (length email) 0)
              (progn
                (insert "<htmlurl url=\"mailto:")
                (insert email) (insert "\" name=\"") (insert email)
                (insert "\"><newline>\n")))
          (if (> (length home) 0)
              (progn
                (insert "<htmlurl url=\"http://")
                (insert home) (insert "\" name=\"") (insert home)
                (insert "\">\n<newline>")))
          (if (> (length translator) 0)
              (progn
                (setq email-translator (read-from-minibuffer "Translator e-mail: ")
                      home-translator (read-from-minibuffer "Translator home page: http://"))
                (insert "Translator : ") 
                (insert translator) 
                (insert "<newline>\n")
                (if (> (length email-translator) 0)
                    (progn 
                      (insert "<htmlurl url=\"mailto:") 
                      (insert email-translator) (insert "\" name=\"") 
                      (insert email-translator)
                      (insert "\"><newline>\n")))
                (if (> (length home-translator) 0)
                    (progn 
                      (insert "<htmlurl url=\"http://") 
                      (insert home-translator) (insert "\" name=\"")
                      (insert home-translator)
                      (insert "\"><newline>\n")))))
          (insert "</author>\n<date>\n")
          (insert date)
          (insert "\n</date>\n\n<abstract>\n")
          (setq point-beginning (point))
          (insert "\n</abstract>\n<toc>\n\n<sect>\n<p>\n\n\n</sect>\n\n</article>\n")
          (goto-char point-beginning)
          ))))