Re: \everyaftershipout isn't "called" for every pagebreak

[Andreas Schneider <aksdb@gmx.de>]

> dealing with multipass data in mkiv is completely different from mkii
> and at some point there will be a proper api for users (makes no sense
> now as i might as well change internals along with luatex developments)
> 
> in mkiv we store info in tables and much is available during a document
> run anyway (in mkii we filter data from the tuo file) so the question
> is, what info do you need? it's probably easier to provide it as core
> functionality
> 
> so i need speccs and a small test file
> 
> Hans

Thanks for that info!
I think for specs my "plan" is too vague. I will explain what my goal is 
then you either see a good solution and/or tell me that this is out of scope 
for now :-)

The test file to demonstrate the problem is in my initial newsgroup post for 
this thread. I will re-attach it here.

What I need would be a precise page break handling. Currently ConTeXt seems 
to process a whole paragraph as one object, and then breaks it down to 
individual pages. That leads to a problem however:
I want to refine my citation style. All bibliography is inserted into 
footnotes. If two (or more) consecutive citations _on the same page_ refer 
to the same bib entry, the footnote for that citation should read "Ibidem". 
Therefore I have to remember the last cited entry. Currently I use 
\appendtoks...\to\everyaftershipout to reset/clear the variable I use for 
storing that last entry. That works fine as long as the paragraphs are 
small. If however several citations within one (possibly large) paragraph 
are separated by a page break, the output will be wrong, since the event to 
reset the variable occurs too late (see above).

The problem can be demonstrated with this example - the first footnote on 
each page should be "New".

\define\test{\doifelse{\getvalue{testvar}}{page}{%
  \footnote{Repeat}%
}{%
  \footnote{New}%
  \setvalue{testvar}{page}%
}}

\appendtoks
  \global\setvalue{testvar}{}
\to\everyaftershipout

\starttext
  \dorecurse{10}{\dorecurse{250}{text }\test}

  \dorecurse{10}{\dorecurse{250}{text }\test}
\stoptext


Best Regards,
Andreas.

___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________