Hi Hans,
playing with the solution for Horacio the line \enableregime[utf] stops
treating index entries and its subentries right in MkII.
%\enableregime[utf]
\starttext
\placeregister[index]
\page
A\index[arbol+rojo]{arbol+rojo}\page
B\index[araña+linda]{araña+linda}\page
C\index[arbol+verde]{arbol+verde}\page
D\index[araña+grande]{araña+grande}\page
E\index[arbol+blanco]{arbol+blanco}\page
\stoptext
Creator: ConTeXt - 2010.11.20 12:51
Producer: pdfTeX-1.40.11
Jano
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