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

[Andreas Schneider <aksdb@gmx.de>]

Hans Hagen wrote:
> It depends on your document. We have workflows where we can do with one
> pass in which case we run with --once (--runs=2 or so)
> 
> Future versions of context mkiv might need one run less (in some cases)
> or one perceived run (which saves startup cycles) but as Wolgangs
> explained already, in more complex cases we cannot do with less runs as
> any change haping now can influence something a few pages back which in
> turn might influence what follows.
> 
> Normally, when you correct only typos there will be no multiple runs.
> 
> MkIV already is more efficient as we now always assume an advanced pdf
> backend so that we don't need to use the MkII the object reference
> mechanism.
> 
> Hans

In my example I can't even get \pagenumber to work correctly. If I replace 
my \test macro with \pagenumber, the first 4 pages all print page "1" (since 
it's still the same paragraph). Is there anything I can do about that? (Of 
course my main concern is the original problem of not catching page breaks 
to reset a variable).

I also can't quite work out a multi-pass solution ... the only way I could 
imagine how it could work is by storing the content I would like to print 
together with the coordinates it was printed to in the first run, and in the 
second run evaluate from these information when a page break occured and 
modify the data accordingly. But I'm a bit lost here where to start ... my 
TeX knowledge is rather basic and I don't know anything about the luatex 
internals so I don't know if there are any events I could hook (and when and 
where to hook them :-/).

I would be very grateful if you could point me in a direction I can work 
forward from - I can only guess that there are similar mechanisms in the 
already existing MkIV code ... although the \pagenumber problem seems to 
indicate that it might be near to impossible :-/

Best Regards,
Andreas.

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