Hi Ihor,
Thanks for the response. 
I updated my patched and mailed the requested copyright form to assign@gnu.org

Kind regards,
Bob 


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Apr 4, 2022, 12:33 by yantar92@gmail.com:
emacs--- via "General discussions about Org-mode."
<emacs-orgmode@gnu.org> writes:
I have implemented tabbing (http://www.ctex.org/documents/latex/latex2e-html/ltx-58.html) support for ox-latex. By setting #+ATTR_LATEX: :mode tabbingthe exporter will use the tabbing environment. 

The benefits of using tabbing over tabular:
- Can span multiple pages (also possible with long tables).
- Cell width is fixed and does not depend on the content.
- Cells can overflow. 

Looks useful. Marking your message as a patch to be tracked at
updated.orgmode.org

Some comments are below.
TINYCHANGE

Note that your patch >15 LOC and cannot be applied without copyright
assignment. See https://orgmode.org/worg/org-contribute.html#copyright
-;; `org-latex--org-table' or `org-latex--math-table' functions,
+;; `org-latex--org-table' or `org-latex--math-table' or `org-latex--org-tabbing' functions,

We generally try to keep all the text in source files narrower than 70
characters (default value of fill-column). You can use fill-region to
make Emacs autofill the comment lines.
+(defun org-latex--align-string-tabbing (table info &optional math?)

It looks like math? argument is unused. Is it intentional?
+ "Return an appropriate LaTeX alignment string, for the
+latex tabbing environment.
+TABLE is the considered table. INFO is a plist used as
+a communication channel. When optional argument MATH? is
+non-nil, TABLE is meant to be a matrix, where all cells are
+centered."
+ (or (org-export-read-attribute :attr_latex table :align)
+ (let ((align "")
+ (count 0)
+ (separator ""))
+ (progn

You do not need an extra progn inside let.
+(defun org-table--org-tabbing (table contenst info)

^contents
+ "Return appropriate LaTeX code for an Org table, using the
+latex tabbing syntax.
+TABLE is the table type element to transcode. CONTENTS is its
+contents, as a string. INFO is a plist used as a communication
+channel.
+This function assumes TABLE has `org' as its `:type' property and
+`tabbing' as its `:mode' attribute."
+ (let ((output (format "\\begin{%s}\n%s\n%s\\end{%s}"
+ "tabbing"
+ (org-latex--align-string-tabbing table info )
+ contenst

^contents


Best,
Ihor