Hi. In latest LMTX (2021.01.07 16:59), your example works as expected:

\defineregister[myindex]

\defineprocessor[style][style=italic]%Isn't another name available?

\starttext

In \myindex{style->Observer, The}{\em The Observer} of 31 July 2018

\placemyindex%

\stoptext

Jairo


El jue, 7 de ene. de 2021 a la(s) 17:29, jbf (roma83537@gmail.com) escribió:

I'm wondering if further progress has been made in Mk IV on styling parts of an index (register) entry? I have followed the explanation on the wiki, but do not seem to be able to achieve what I need.

And what I need is to be able to italicise entries that refer to newspaper names, e.g. The Observer

MWE

\defineregister[myindex]
\defineprocessor[style][style=italic]

\starttext

In \myindex{style->Observer, The} {\em The Observer} of 31 July 2018

\stoptext

The only result I am getting is:

->Observer, The   223

But what I want is Observer, The (in other words, in italics).

Clearly I am doing something wrong, or not enough, or... maybe there is another way to achieve waht I need?

Julian

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