Am 22.03.2015 um 11:53 schrieb Pablo Rodriguez <oinos@gmx.es>:

On 03/22/2015 12:27 AM, Hans Hagen wrote:
On 3/21/2015 10:49 PM, Pablo Rodriguez wrote:
Dear list,

I have the following sample:

    \setupinteraction[state=start]
    \starttext
    \placelist[chapter]
    %~ \uppercasestring{context}\to\ascii
    %~ \chapter{\getvalue{\ascii}}
    \chapter{ConTeXt}
    \stoptext

ConTeXt complains about an error in the first line.

What am I doing wrong? (Sorry, but I wanted to test the commented lines,
but I don’t know why the simplified example doesn’t work.)

\uppercasestring{context}\to\ascii
\chapter{\meaning\ascii} % \getvalue{\ascii}}
\chapter{\WORD{ConTeXt}}

so, \ascii is made undefined at some time

Many thanks for your reply, Hans.

I’m afraid that my ignorance prevents me for understanding your reply.

What I was trying to solve was this:

   \startbuffer[demo]
   <doc>
       <h1><span label="context">ConTeXt</a></h1>
       <span label="context">ConTeXt</a>
       <span label="tex">TeX</a>
       <span label="latex">LaTeX</a>
   </doc>
   \stopbuffer

You’re mixing tags, each <span> ends with </a>.

   \setupinteraction[state=start]

   \startxmlsetups xml:initialize
       \xmlsetsetup{#1}{h1|span}{xml:*}
       \xmlsetsetup{#1}{span[@label]}{xml:logo}
       \xmlsetsetup{#1}{span[@label='context']}{xml:context}
   \stopxmlsetups

   \xmlregistersetup{xml:initialize}

   \startxmlsetups xml:h1
       \placecontent[criterium=all]
       \chapter{\xmlflush{#1}}
   \stopxmlsetups

   \startxmlsetups xml:logo
       \uppercasestring\xmlatt{#1}{label}\xmlatt{#1}{name}\to\ascii
       \ifx\ascii\empty\else\getvalue{\ascii}\fi
   \stopxmlsetups

   \startxmlsetups xml:context
       \ConTeXt
   \stopxmlsetups

   \starttext
        \xmlprocessbuffer{main}{demo}{}
   \stoptext

xml:logo doesn’t work when it has to be parsed in a heading.

Is there a fix for xml:logo or is xml:context the proper fix?