From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nicolas Goaziou <n.goaziou@gmail.com>
Subject: Re: [PATCH] Longtable continuation strings customizable
Date: Thu, 31 Oct 2013 11:19:17 +0100
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In-Reply-To: <m1d2mmyauy.fsf@tsdye.com> (Thomas S. Dye's message of "Wed, 30
	Oct 2013 06:36:21 -1000")
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To: "Thomas S. Dye" <tsd@tsdye.com>
Cc: Org-mode <emacs-orgmode@gnu.org>, Carsten Dominik <carsten.dominik@gmail.com>

Hello,

tsd@tsdye.com (Thomas S. Dye) writes:

> I have this, based on the example above:
>
>
> #+name: tsd-continuation-strings
> #+begin_src emacs-lisp
>
>   (defun my-personal-table-continuation-strings (row backend info)
>     (when (org-export-derived-backend-p 'latex)
>       (replace-regexp-in-string
>        "multicolumn{[0-9]+}{l}{\\(.*\\)}" "\\ldots\\ continued from previous page"
>        row nil nil 1)
>        (replace-regexp-in-string
>         "multicolumn{[0-9]+}{r}{\\(.*\\)}" "continued on next page \\ldots"
>        row nil nil 1)))
>   (add-to-list 'org-export-filter-table-row-functions
>                'my-personal-table-continuation-strings)
> #+end_src
>
> I also tried 'org-export-filter-table-functions without success.  I
> always get the default continuation strings.  I've looked around for an
> error message, but there doesn't appear to be one, at least that I can
> find. The asynchronous export runs through to completion.

The first `replace-regexp-in-string' has to be applied to the return
value of the second one. IOW they have to be nested.

Also, you need to double again backslashes in replacement string, or use
a non-nil LITERAL argument in `replace-regexp-in-string'.

Eventually, I made a typo in my suggestion: the second line should be:

  (org-export-derived-backend-p backend 'latex)

In a nutshell:

  (defun my-personal-table-continuation-strings (row backend info)
    (when (org-export-derived-backend-p backend 'latex)
      (replace-regexp-in-string
       "multicolumn{[0-9]+}{l}{\\(.*\\)}" "\\ldots\\ continued from previous page"
       (replace-regexp-in-string
        "multicolumn{[0-9]+}{r}{\\(.*\\)}" "continued on next page \\ldots"
        row nil t 1) nil t 1)))


Regards,

-- 
Nicolas Goaziou