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Re: [O] using export filters to emulate multi-column table cells?
From: |
Nicolas Goaziou |
Subject: |
Re: [O] using export filters to emulate multi-column table cells? |
Date: |
Thu, 14 Feb 2013 18:42:52 +0100 |
Hello,
Eric Abrahamsen <address@hidden> writes:
> Is there any way to use the new exporter mechanisms to emulate table
> cells that span rows or columns on export? I'm envisioning something
> like this:
>
> | | <2col>Grains | |
> | Year | Oats | Wheat |
> | 2007 | 10lbs | 40lbs |
>
> Where an export filter would pick up on the <2col> cookie, replace it
> with something backend-specific like \multicolumn{2}{Grains}, and then
> somehow remove the following table field from export.
You can add a function to `org-export-filter-table-row-functions'. It
will be called with three arguments. The first one is the table row, as
a string in back-end syntax. If you recognize the pattern "<2col>", you
modify the string accordingly and return it as a replacement. E.g:
#+begin_src emacs-lisp
(defun my-multicolumn-filter (row backend info)
(when (and (org-export-derived-backend-p backend 'latex)
(string-match "<\\([0-9]+\\)col>" row))
(let ((columns (string-to-number (match-string 1 row)))
(start (match-end 0)))
(setq row (replace-match "" nil nil row))
(while (and (> columns 1) (string-match "&" row start))
(setq row (replace-match "" nil nil row))
(decf columns))
row)))
(add-to-list 'org-export-filter-table-row-functions 'my-multicolumn-filter)
#+end_src
Regards,
--
Nicolas Goaziou