Re: [O] new (LaTeX) exporter and date formatting

[Andreas Leha]

Hi Nicolas,

>> I am exporting a document containing dates like this inactive one
>> [2011-10-17 Mo].
>>
>> I do not want to change the displaying of dates in org mode (as that
>> breaks indentation and point movement).  But I'd like this to be
>> exported as "Mo, 17.10.2011".  How do I do that?
>>

[...]

>
> You can either add a filter in `org-export-filter-timestamp-functions',
> or implement your own function to handle timestamp objects. If you
> choose the latter, you can install the function in
> `org-e-latex-translate-alist' to overwrite current latex exporter
> behaviour, or use `org-export-define-derived-backend' to implement your
> own back-end.
>
> Assuming you want to overwrite current behaviour, something along the
> lines of the following (untested) should do the work:
>
> #+begin_src emacs-lisp
> (defun my-e-latex-timestamp (timestamp contents info)
>   (let ((value (org-translate-time (org-element-property :value timestamp))))
>     (setq value
>           (replace-regexp-in-string
>            org-ts-regexp1
>            (lambda (text)
>              (concat (save-match-data (org-trim (match-string 5 value))) ", "
>                      (substring text 0 (1- (match-beginning 5)))
>                      (substring text (match-end 5))))
>            value))
>     (case (org-element-property :type timestamp)
>       ((active active-range) (format org-e-latex-active-timestamp-format 
> value))
>       ((inactive inactive-range)
>        (format org-e-latex-inactive-timestamp-format value))
>       (otherwise (format org-e-latex-diary-timestamp-format value)))))
>
> (add-to-list 'org-e-latex-translate-alist 'my-e-latex-timestamp)
> #+end_src

Thanks a lot for that elaborate response.  It got me where I wanted to be!

>
>> Side note:
>> Ideally, in my opinion, the LaTeX-exporter would honor the
>> "#+LANGUAGE: XX"
>> setting and change the babel-settings accordingly
>
> That seems reasonable. Is there any translation table between language
> symbols and Babel options?

Not that I am aware of.  But we could start one quite easily.  I got
this list of LaTeX-babel supported languages from
http://www.tug.org/texlive/Contents/live/texmf-dist/doc/generic/babel/babel.pdf:
(just a quick hack...)

| LaTeX babel  | lang symbol |
|--------------+-------------|
| acadian      | ??          |
| albanian     | sq          |
| afrikaans    | af          |
| american     | en-us       |
| australian   | en-au       |
| austrian     | de-at       |
| bahasa       | ??          |
| indonesian   | id          |
| indon        | ??          |
| bahasai      | ??          |
| malay        | ms          |
| meyalu       | ??          |
| bahasam      | ??          |
| basque       | eu          |
| brazil       | bt-br       |
| brazilian    | bt-br       |
| breton       | ??          |
| british      | en-gb       |
| bulgarian    | bg          |
| canadian     | en-ca       |
| canadien     | fr-ca       |
| catalan      | ca          |
| croatian     | hr          |
| czech        | cs          |
| danish       | da          |
| dutch        | nl          |
| english      | en          |
| esperanto    | ??          |
| estonian     | et          |
| finnish      | fi          |
| francais     | fr          |
| frenchb      | fr          |
| french       | fr          |
| galician     | gl          |
| german       | de          |
| germanb      | de          |
| greek        | el          |
| hungarian    | hu          |
| icelandic    | is          |
| interlingua  | ??          |
| irish        | en-ie       |
| italian      | it          |
| latin        | la          |
| lowersorbian | sr          |
| magyar       | ??          |
| nagari       | ??          |
| naustrian    | de-at       |
| newzealand   | en-nz       |
| ngerman      | de-de       |
| norsk        | no-no       |
| samin        | ??          |
| nynorsk      | no-no       |
| polish       | pl          |
| portuges     | pt          |
| portuguese   | pt          |
| romanian     | ro          |
| russian      | ru          |
| sanskrit     | sa          |
| scottish     | en-gb       |
| serbian      | sr          |
| slovak       | sk          |
| slovene      | sl          |
| spanish      | es          |
| swedish      | sv          |
| tamil        | ta          |
| turkish      | tr          |
| ukrainian    | uk          |
| uppersorbian | sb          |
| welsh        | cy          |
| UKenglish    | en-gb       |
| USenglish    | en-us       |


Regards,
Andreas