[xep-support] page number and page-range

[David Tolpin]

On Wed, 10 May 2006 19:09:16 +0500, ekimber <ekimber at innodata-isogen.com>  
wrote:

> Enrico Raymundo wrote:
>> Hi Eliot,
>>  Thanks for your help.  In a way XEP extensions work if the Table of  
>> Contents
>> is part of the backmatter, not in the Front Matter.  It is definitely a
>> "back-of-the-book" solution.  I tested it by generating TOC at the  
>> front and
>> at the back.  The front matter BTW I am using XEP 4.4.
>
> Bummer--I didn't realize they had that limitation. In that case your  
> only 1.0 solution is a two-pass process or a PDF post-process.
>

Hi Eliot,

this is not a limitation, this is a restriction. You don't want  
back-of-the-book index algorithms to involve back-tracking, potentially  
endless. It is possible, in general, to build a formatter invariant to  
backtracking, but it will be too slow.

David
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