LaTeX Export: The output of headline is incorrect when tag contains '_' or '@'

[Frank Chang <frank.nevermind@gmail.com>]

Hello everyone,

I'm new to Emacs (22.1) and org-mode (6.05b).
Recently I start to use org-mode for note-taking, and it's really useful.

But the problem comes when I try to export my org file to LaTeX.
For example, if the headline is:

    * Headline                 :@tag_1:tag_2:tag3:

which contains 3 tags: '@tag_1', 'tag_1',  and 'tag3',
then the output will become

    #+OPTIONS:   toc:nil ^:nil
    \section{Headline                 :@tag\_{}1:tag\_{}2}

    #+OPTIONS:   toc:nil ^:{}
    #+OPTIONS:   toc:nil ^:t
    \section{Headline                 :@$tag_1$:$tag_2$}

which seems incorrect.

I look at the source code 'org-export-latex.el', and find the statement 
in function org-export-latex-keywords-maybe()

    ;; convert tags
    (when (re-search-forward "\\(:[a-zA-Z0-9]+\\)+:" nil t)
          (if (or (not org-export-with-tags)
              (plist-get remove-list :tags))
          (replace-match "")
        (replace-match (format "\\texttt{%s}" (match-string 0)) t t)))

It seems that LaTeX exporter takes only letters and numbers as parts of 
tags.

But even I add '_' and '@' in regex it doesn't work, because '_'  has 
been exported
by the function org-export-latex-special-chars() (maybe '\_{}')

I'm a Emacs newbie, and really don't know what to do next:)

So is there anyway to work around or fix it?

Thanks.


Best regards,
Frank