Hi,

So the problem is due to lexical binding (I am using emacs 25 devel branch).
The following variables can't be dynamically bound anymore in ox-html:
row-number, rowgroup-number, start-rowgroup-p, end-rowgroup-p,
top-row-p, bottom-row-p
.
There are 2 options :
- declare them with defvar
- pass them to eval as an environment.
Here is a patch for the second option, but I wonder if the first one
wouldn't be better.

diff --git a/vendor/org-mode/lisp/ox-html.el
b/vendor/org-mode/lisp/ox-html.el
index 6affac4..4e56ab3 100644
--- a/vendor/org-mode/lisp/ox-html.el
+++ b/vendor/org-mode/lisp/ox-html.el
@@ -3336,10 +3336,22 @@ communication channel."
        ;; Begin a rowgroup?
        (when start-rowgroup-p (car rowgroup-tags))
        ;; Actual table row.
-       (concat "\n" (eval (car (plist-get info :html-table-row-tags)) t)
+       (concat "\n" (eval (car (plist-get info :html-table-row-tags))
+                         `((row-number . ,row-number)
+                           (rowgroup-number . ,rowgroup-number)
+                           (start-rowgroup-p . ,start-rowgroup-p)
+                           (end-rowgroup-p . , end-rowgroup-p)
+                           (top-row-p . ,top-row-p)
+                           (bottom-row-p . ,bottom-row-p)))
               contents
               "\n"
-              (eval (cdr (plist-get info :html-table-row-tags)) t))
+              (eval (cdr (plist-get info :html-table-row-tags))
+                    `((row-number . ,row-number)
+                      (rowgroup-number . ,rowgroup-number)
+                      (start-rowgroup-p . ,start-rowgroup-p)
+                      (end-rowgroup-p . , end-rowgroup-p)
+                      (top-row-p . ,top-row-p)
+                      (bottom-row-p . ,bottom-row-p))))
        ;; End a rowgroup?
        (when end-rowgroup-p (cdr rowgroup-tags))))))

Best regards,

Fabrice

2015-12-13 0:36 GMT+01:00 Fabrice Popineau <fabrice.popineau@gmail.com>:

> Hi,
>
> I get an error in ox-html.el with the latest org-mode when exporting
> tables to html :
>
> Debugger entered--Lisp error: (void-variable top-row-p)
>   (cond (top-row-p "<tr class=\"tr-top\">") (bottom-row-p "<tr
> class=\"tr-bottom\">") (t (if (= (mod row-number 2) 1) "<tr
> class=\"tr-odd\">" "<tr class=\"tr-even\">")))
>   eval((cond (top-row-p "<tr class=\"tr-top\">") (bottom-row-p "<tr
> class=\"tr-bottom\">") (t (if (= (mod row-number 2) 1) "<tr
> class=\"tr-odd\">" "<tr class=\"tr-even\">"))) t)
>   org-html-table-row((table-row (:type standard :begin 1784 :end 1898
> :contents-begin 1785 :contents-end 1897 :post-blank 0 :post-affiliated 1784
> :parent ...))
>
> Can anybody confirm or is something wrong on my side ?
>
> Greetings,
>
> Fabrice
>