[NTG-context] index entry with sorting and processor

[NTG-context] index entry with sorting and processor

[Henning Hraban Ramm]

Hi again,

the page number of register entries from a glossary should have a 
different color:

\defineprocessor[glossar][color=green]
\define[1]\GlIndex{\index[glossar->]{#1}}

This works, but I’d like to apply a macro to the text, and then I need 
to set the sort order:

\define[1]\GlIndex{\index[glossar->#1]{\Word{#1}}}

This also works, but I get separate index entries from
\index{Something}
and
\GlIndex{something}

Glossary entries may be lowercase, but in the index I’d like to 
normalize to uppercase initials. (The index command is part of a lemma 
setup.)

How can I combine the entries?

I also tried \setregisterentry but didn’t find out how to use a 
processor for the page number. In the wiki, the (generally working) 
processor option is undocumented, so if there’s another option, it’s 
also missing.
In the source, I found processors for entry & page, but not how to 
address the latter.

MWE:
"""
\defineprocessor[glossar][color=green]
\define[1]\GlIndex{\index[glossar->#1]{\Word{#1}}}

\starttext

\samplefile{ward}
\index{something}
\index{anything}
\page

\samplefile{tufte}
\GlIndex{something}
\GlIndex{anything}

\page
\placeindex
\stoptext

"""

Hraban
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