7. Insert-sgml-header程序之范例

读者在撰写一份 Linux Documentation Project 文件时，可以使用下列程序来启动自动插入自订的页首。

透过一 mini-buffer，上述程序会要求读者提供一些或许必要的信息。

它会先询问要输出的标题是什么，若您没有提供，则页首就不会显现标题。再来是日期，作者，作者的电子邮件帐号与 home page （最后两项可随意填入）。

接著它会询问翻译者的名字。若无，请直接键入 Return。若有，程序就会接著询问译者的电子邮件帐号及 home page （同样也是随意填入）。

再来它会把您的输入存入 current buffer，包括任何您输入的信息格式，及摘要和第一章的标签。之后它会将游标导向您要键入摘要的的地方。

(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)
          ))))