Hi Nicolas,

I know nothing about lisp, but I think I understand enough of the structure
to propose the following changes:

In my testfile, this preserves the current behavior if no #+CAPTION is
present. However, if the  #+CAPTION is not empty, the table will be
exported as float with the proper caption and label. The code needs
probably some cleanup, but I don't understand enough lisp to know what's
save to drop.

Hope this can be merged

Cheers

Uli

--- org-mode/lisp/ox-latex.el   2018-11-28 11:58:15.234232222 -0500
+++ org-mode-uliw/ox-latex.el.uliw      2018-11-28 11:57:09.057281230 -0500

@@ -3305,6 +3310,21 @@

 This function assumes TABLE has `table.el' as its `:type'
 property."
+  (let* ((caption (org-latex--caption/label-string table info))
+        (attr (org-export-read-attribute :attr_latex table))
+        ;; Determine alignment string.
+        (alignment (org-latex--align-string table info))
+        ;; Determine environment for the table: longtable, tabular...
+        (table-env (or (plist-get attr :environment)
+                       (plist-get info :latex-default-table-environment)))
+        ;; If table is a float, determine environment: table, table*
+        ;; or sidewaystable.
+        (placement
+         (or (plist-get attr :placement)
+             (format "[%s]" (plist-get info
:latex-default-figure-position))))
+        (centerp (if (plist-member attr :center) (plist-get attr :center)
+                   (plist-get info :latex-tables-centered)))
+        (caption-above-p (org-latex--caption-above-p table info)))
   (require 'table)
   ;; Ensure "*org-export-table*" buffer is empty.
   (with-current-buffer (get-buffer-create "*org-export-table*")
@@ -3332,7 +3352,16 @@
       (let ((centerp (if (plist-member attr :center) (plist-get attr
:center)
                       (plist-get info :latex-tables-centered))))
        (if (not centerp) output
-         (format "\\begin{center}\n%s\n\\end{center}" output))))))
+         (if (string= "" caption)
+             (format (concat "\\begin{center}\n"
+                             "%s\n"
+                             "\\end{center}\n") output)
+           (format (concat "\\begin{table}\n"
+                           caption
+                           "\\centering\n"
+                           "%s\n"
+                           "\\end{table}\n") output))
+         ))))))

 (defun org-latex--math-table (table info)
   "Return appropriate LaTeX code for a matrix.


On Mon, 26 Nov 2018 at 16:02 Nicolas Goaziou <mail@nicolasgoaziou.fr> wrote:

> Hello,
>
> "Ulrich G. Wortmann" <uli.wortmann@utoronto.ca> writes:
>
> > I had a quick look at table.el
> >
> > It exports only a tabular command, not a table. Is there a way to make
> org
> > wrap the
> >
> > \begin{tabular}
> > \end{tabular}
> >
> > into a regular
> >
> > \begin{table}
> > \end{table}
> >
> > This would be perfectly correct latex, and keep the export mechanism,
> > neatly separated
>
> You may want to look at `org-latex--table.el-table' and see what can be
> done.
>
> Regards,
>
> --
> Nicolas Goaziou
>
-- 

Ulrich Wortmann 416 978 7084

Associate Chair Undergraduate Affairs

Department of Earth Sciences

University of Toronto
22 Russel St., Toronto, ON, Canada, M5S 3B1