Thanks all for the discussion. As a simple user, I think I must pass. All this
complexity in my document text and setup is too much trouble and it seems risky
(wjhat am I going to break?). Far less work to do a small check at the end.
What I was looking for was something simple that made for instance
\at{page][foo] conditional, e.g.
\conditionalat[when]{page}[foo]
with ‘when’ is something like
always
onpage
offpage
onspread
offspread
never
Typing \conditionalat instead of \at is what I as a simpleton user can handle…
G
On 25 Jul 2014, at 13:06, Hans Hagen <pra...@wxs.nl> wrote:
> On 7/24/2014 2:03 PM, Otared Kavian wrote:
>> Hi,
>>
>> Thanks for your attention, Wolfgang: indeed removing
>> \analyzecurrentreference
>> from your example allows mkiv to typeset correctly and obtain the expected
>> result.
>
> > ....
>
> yet another sparsely documented feature ... in beta:
>
> % tests/mkiv/pagestate-001.tex
>
> \useMPlibrary[dum]
>
> \setuppagenumbering
> [alternative=doublesided]
>
> % new: \setupreferencing[doublesided=no]
>
> % old: \somewhere{backward}{foreward}[label]
> % new: \someplace{preceding}{backward}{current}{foreward}{following}[label]
> % old: \atpage[#label]
> % new:
> \doifcheckedpagestate{label}{preceding}{backward}{current}{foreward}{following}{otherwise}
>
> \starttext
>
> \dorecurse {20} {
> \placefigure
> [here]
> [fig:#1]
> {}
> {\externalfigure[dummy]}
> \dorecurse {20} {
> ##1: \atpage[fig:##1] /
> \doifcheckedpagestate{fig:##1}
> {preceding}
> {backward}
> {current}
> {foreward}
> {following}
> {otherwise}
> }
> }
>
> \stoptext
>
> if okay, then it's something to wikify ... should
> \setupreferencing[doublesided=no] be default? (currently yes i.e. spread
> aware)
>
> keep in mind that this kind of functionality once it kicks in (is used) can
> result in a few more runs to get thing right and that there's always the
> danger of oscillation as the text injected is dependent on the situation
>
> Hans
>
>
> -----------------------------------------------------------------
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