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From: jbf via ntg-context <ntg-context@ntg.nl>
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Subject: Re: \setupheadertexts for chapters with different
 authors
Date: Sat, 19 Mar 2022 13:16:42 +1100
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I might need a little more help just to understand how best to adapt 
this to my situation:

One thing is clear: I was attempting to use a 'list' variable, and I can 
see why that was an error, since it is headertexts, not TOC that I want 
to influence.

But let me simplify my situation:

You seem to suggest initially that I could use \structureuservariable 
(or \structurevariable) instead, especially since I already have a 
variable to call on, e.g \startchapter[title={My title}][author={A. 
uthor}]. But in the example you then gave, you made no use of either of 
these.

My current setting is:

\setupheadertexts   [{\hfill\getmarking[chapter]\hfill}][]   
[{\hfill\documentvariable{metadata:title}\hfill}][]

which gives me the book title centred on verso pages, and the chapter 
title centred on recto pages. All I want to do is to have the chapter 
contributors' name for each chapter instead of the chapter title.

So why can't I create a setups along the lines of:

\startsetups[contributor] \getmarking[\structureuservariable{author}] 
\stopsetups

Then just swap 'chapter' in \setupheadertexts, with 'contributor'? I 
tried it but it doesn't work. I thought it would be logical. Clearly I'm 
wrong but don't appreciate why.

Julian

On 18/3/22 18:52, Henning Hraban Ramm via ntg-context wrote:
> The *list* variables work only in lists.
>
> There’s also \structurevariable and \structureuservariable.
>
> Make sure you use setups for the header, otherwise the variable gets 
> expanded only once at the beginning.
>
> Like in:
>
> \setuppagenumbering[alternative=doublesided]
> \setupheadertexts[] % empty
> \setupheadertexts[\setups{text right}][][][\setups{text left}]
>
> \startsetups[text right]
> \rlap{\pagenumber}
> \hfill
> \getmarking[chapter]
> \hfill
> \llap{Un Nom}
> \stopsetups
>
> \startsetups[text left]
> \rlap{Una Person}
> \hfill
> \getmarking[section]
> \hfill
> \llap{\pagenumber}
> \stopsetups 
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<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  </head>
  <body>
    <p>I might need a little more help just to understand how best to adapt this to my situation:</p>
    <p>One thing is clear: I was attempting to use a 'list' variable, and I can see why that was an error, since it is headertexts, not TOC that I want to influence. 
</p>
    <p>But let me simplify my situation:
</p>
    <p>You seem to suggest initially that I could use \structureuservariable (or \structurevariable) instead, especially since I already have a variable to call on, e.g \startchapter[title={My title}][author={A. uthor}]. But in the example you then gave, you made no use of either of these.
</p>
    <p>My current setting is:</p>
    <p>\setupheadertexts
  [{\hfill\getmarking[chapter]\hfill}][] 
  [{\hfill\documentvariable{metadata:title}\hfill}][] </p>
    <p>which gives me the book title centred on verso pages, and the chapter title centred on recto pages. All I want to do is to have the chapter contributors' name for each chapter instead of the chapter title.
</p>
    <p>So why can't I create a setups along the lines of:</p>
    <p>\startsetups[contributor]
  \getmarking[\structureuservariable{author}]
\stopsetups</p>
    <p>Then just swap 'chapter' in \setupheadertexts, with 'contributor'? I tried it but it doesn't work. I thought it would be logical. Clearly I'm wrong but don't appreciate why.</p>
    <p>Julian
<style type="text/css">p, li { white-space: pre-wrap; }</style></p>
    <div class="moz-cite-prefix">On 18/3/22 18:52, Henning Hraban Ramm
      via ntg-context wrote:<br>
    </div>
    <blockquote type="cite"
      cite="mid:49d83fe5-3310-30ac-79cc-26b88be47403@fiee.net">The <b
        class="moz-txt-star"><span class="moz-txt-tag">*</span>list<span
          class="moz-txt-tag">*</span></b> variables work only in lists.
      <br>
      <br>
      There’s also \structurevariable and \structureuservariable.
      <br>
      <br>
      Make sure you use setups for the header, otherwise the variable
      gets expanded only once at the beginning.
      <br>
      <br>
      Like in:
      <br>
      <br>
      \setuppagenumbering[alternative=doublesided]
      <br>
      \setupheadertexts[] % empty
      <br>
      \setupheadertexts[\setups{text right}][][][\setups{text left}]
      <br>
      <br>
      \startsetups[text right]
      <br>
      \rlap{\pagenumber}
      <br>
      \hfill
      <br>
      \getmarking[chapter]
      <br>
      \hfill
      <br>
      \llap{Un Nom}
      <br>
      \stopsetups
      <br>
      <br>
      \startsetups[text left]
      <br>
      \rlap{Una Person}
      <br>
      \hfill
      <br>
      \getmarking[section]
      <br>
      \hfill
      <br>
      \llap{\pagenumber}
      <br>
      \stopsetups
    </blockquote>
  </body>
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