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org-export: Allow variable arity in `org-export-with-backend' 

* contrib/lisp/org-export.el (org-export-with-backend): Allow to
  ignore contents and info, if necessary.  Also fix code typo.
This commit is contained in:
Nicolas Goaziou 2012-11-22 15:02:21 +01:00
parent cc998ccbad
commit d1a075e6bb
1 changed files with 7 additions and 5 deletions
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12
contrib/lisp/org-export.el
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@ -2983,15 +2983,17 @@ Caption lines are separated by a white space."
;; back-end, it may be used as a fall-back function once all specific
;; cases have been treated.
(defun org-export-with-backend (back-end data &rest args)
"Call a transcoder from BACK-END on DATA."
(defun org-export-with-backend (back-end data &optional contents info)
"Call a transcoder from BACK-END on DATA.
CONTENTS, when non-nil, is the transcoded contents of DATA
element, as a string. INFO, when non-nil, is the communication
channel used for export, as a plist.."
(org-export-barf-if-invalid-backend back-end)
(let ((type (org-element-type data)))
(if (or (memq type '(nil org-data)))
(error "No foreign transcoder available")
(if (memq type '(nil org-data)) (error "No foreign transcoder available")
(let ((transcoder
(cdr (assq type (org-export-backend-translate-table back-end)))))
(if (functionp transcoder) (apply transcoder data args)
(if (functionp transcoder) (funcall transcoder contents info)
(error "No foreign transcoder available"))))))