It seems that there is a bug in converters.alphabetic function,
converters.alphabetic(0,"arabic") returns the western 0 (no matter what
is the selected language) while converters.alphabetic(1,"arabic") gives
the Arabic 0 not 1 and so one i.e. it looks like as if it starts
counting from zero.

This has been reported few weeks ago, but I think it got missed.

Regards,
 Khaled

-- 
 Khaled Hosny
 Arabic localizer and member of Arabeyes.org team