org-ascii-table-use-ascii-art

org-ascii-table-use-ascii-art is a variable defined in `ox-ascii.el'.
Its value is

nil

Documentation:
Non-nil means table.el tables are turned into ascii-art.

It only makes sense when export charset is `utf-8'. It is nil by
default since it requires ascii-art-to-unicode.el package. You
can download it here:

http://gnuvola.org/software/j/aa2u/ascii-art-to-unicode.el.

You can customize this variable.

This variable was introduced, or its default value was changed, in version 24.4 of Emacs.