Hi Kamal,

On 25/10/2010, at 6:05 AM, Kamal Abdali wrote:

> Thanks, Ross, for your effort to tame makeindex for the Arabic script. 
> 
> I also came across an interesting Persian sample that uses xepersian and 
> makeindex. The pdf and tex source are at 
>      http://www.parsilatex.com/joomla/attachments/vahid-seminar.pdf 
>      http://www.parsilatex.com/joomla/attachments/vahid-seminar.tex
> Missing some of the source components, I couldn't reproduce the pdf exactly. 
> But lo and behold, the index was generated without fuss and in the desired 
> order of entries. I am still mystified why the letters are disconnected in 
> the text, but that's another debugging chore.

The \index entries in that document result in the following kinds 
of line within the .idx file:

\indexentry{$ \uparrow \left\lbrace x\right\rbrace  $|hyperpage}{3}
\indexentry{قی�...@کران بالا|hyperpage}{3}

This is another way to apply a macro to the page-number;
in this case  \hyperpage  is applied, due to the  'pagebackref'
option when hyperref is loaded. It is done by a redefinition
of the \index  command, or of a LaTeX internal that it calls.


The arabic page numbering must be due to the font that is being used,
with a language setting. This is because XeTeX just receives the numbers 
as ordinary western digits, but is outputting in the Hex range  
x01d0 --> x01d9 .

The font  "XB Niloofar" is accompanied by CMap bfrange transformations, 
as follows:
<01D0> <01D2> <0661>
<01D3> <01D5> <06F4>
<01D6> <01D8> <0667>

These map into the arabic-indic digits part of Unicode.
Thus Copy/Paste from the PDF recovers the digits in this form.


> Kamal Abdali


Hope this helps,

        Ross

------------------------------------------------------------------------
Ross Moore                                       ross.mo...@mq.edu.au 
Mathematics Department                           office: E7A-419      
Macquarie University                             tel: +61 (0)2 9850 8955
Sydney, Australia  2109                          fax: +61 (0)2 9850 8114
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