[XeTeX] longtable and RTL (Arabic)

[Jens Bakker]

Dear Ladies and Gentlemen,

I would like to ask you for help with longtable and right to left writing direction, please. As the attached example with polyglossia, longtable, and main language Arabic shows, the text within the table is set correctly from right to left, but the cells of the table are set from left to right: "Titel" should be on the right and "Page" on the left. In the bidi manual (p.13, section 1.23) it is said, that tabulars are set left to right in an LTR environment and right to left in an RTL environment. What is my mistake?

With best wishes and best regards,
Jens Bakker

P.S.: Strange enough, the English words "Titel" and "Page" are set correctly LTR without defining a Latin language in the preamble.