On 7/25/2014 4:31 PM, Gerben Wierda wrote:

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.

Well, that kind of decisions demand injecting a node so there could be potential interference (as with more mechanisms that carry status info around for a second pass).

Anyway, maybe someone else benefits from the extension.

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…

\unprotect

\unexpanded\def\strc_references_conditional#1#2[#3]#4[#5]% {text}[condition][reference]
 {\doifcheckedpagestate{#5}%
    {\doifelse{#3}\v!precedingpage{#1{#2}[#5]}\ignorespaces}%
    {\doifelse{#3}\v!hencefore    {#1{#2}[#5]}\ignorespaces}%
    {\doifelse{#3}\v!current      {#1{#2}[#5]}\ignorespaces}%
    {\doifelse{#3}\v!hereafter    {#1{#2}[#5]}\ignorespaces}%
    {\doifelse{#3}\v!followingpage{#1{#2}[#5]}\ignorespaces}%
    {}}

\unexpanded\def\conditionalat   {\strc_references_conditional\at}
\unexpanded\def\conditionalin   {\strc_references_conditional\in}
\unexpanded\def\conditionalabout{\strc_references_conditional\about}

\protect

But I'll not enable it to the code as it's not used anyway (maybe sometime a module).

G

On 25 Jul 2014, at 13:06, Hans Hagen <pragma@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


-----------------------------------------------------------------
                                         Hans Hagen | PRAGMA ADE
             Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
   tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
                                            | www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
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
___________________________________________________________________________________

___________________________________________________________________________________
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
___________________________________________________________________________________

-- 

-----------------------------------------------------------------
                                         Hans Hagen | PRAGMA ADE
             Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
   tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
                                            | www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
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
___________________________________________________________________________________