Re: new exporter

[Nicolas Goaziou <n.goaziou@gmail.com>]

Hello,

Achim Gratz <Stromeko@nexgo.de> writes:

> After some consideration, I think this is what the macro should look
> like:
>
> (defmacro org-export-with-current-buffer-copy (&rest body)
>   "Apply BODY in a copy of the current buffer.
>
> The copy preserves local variables and visibility of the original
> buffer.
>
> Point is at buffer's beginning when BODY is applied."
>   `(org-with-gensyms (original-buffer offset buffer-string overlays)
>      (let ((original-buffer (current-buffer))
> 	   (offset (1- (point-min)))
> 	   (buffer-string (buffer-string))
> 	   (overlays (mapcar
> 		       'copy-overlay (overlays-in (point-min) (point-max)))))
>        (with-temp-buffer
> 	 (let ((buffer-invisibility-spec nil))
> 	   (org-clone-local-variables
> 	    original-buffer
> 	    "^\\(org-\\|orgtbl-\\|major-mode$\\|outline-\\(regexp\\|level\\)$\\)")
> 	   (insert buffer-string)
> 	   (mapc (lambda (ov)
> 		   (move-overlay
> 		    ov
> 		    (- (overlay-start ov) offset)
> 		    (- (overlay-end ov) offset)
> 		    (current-buffer)))
> 		 overlays)
> 	   (goto-char (point-min))
> 	   (progn ,@body))))))
> (def-edebug-spec org-export-with-current-buffer-copy (body))

Not exactly. With this version, symbols generated with gensym are never
used, and the macro isn't hygienic anymore.

I still think your first take about this macro was the good one. I've
pushed something very similar. Could you verify if it is correct on the
compiling side?

> The org-export-define-derived-backend macro seems similarly starstruck,
> but I really don't know what you think the expansion should be.

Something along the lines of:

#+begin_src emacs-lisp
(progn
  (defconst org-e-beamer-options-alist '(...)
    "Alist between filters keywords and back-end specific filters.
See `org-export-filters-alist' for more information.")
  (defvar org-e-beamer-translate-alist '(...)
    "Alist between element or object types and translators."))
#+end_src

> One of your recent changes introduced four test fail when org-element is
> compiled.  I haven't yet looked why that would be, the four tests are:
>
>    FAILED  test-org-export/table-cell-alignment
>    FAILED  test-org-export/table-cell-borders
>    FAILED  test-org-export/table-row-ends-header-p
>    FAILED  test-org-export/table-row-starts-header-p

Could you paste the error reported by ERT? I can't think of any recent
change in this area.

> The new org-e-beamer.el doesn't compile at all:
> org-e-beamer.el:258:1:Error: Wrong type argument: listp,
> org-e-beamer-export-block

It should be fixed.

Thank you.


Regards,

-- 
Nicolas Goaziou