Re: register entries in footnotes

[Hans Hagen <j.hagen@xs4all.nl>]

On 4/26/2020 4:35 PM, Thomas A. Schmitz wrote:
> A similar question has been asked three years ago, and Rik Kabel posted 
> a partial solution, adapted here:
> 
> \defineprocessor [Footnote] [right={ n}]
> 
> \define[1]
>    \fnindex{\index[Footnote->]{#1}}
> 
> \starttext
> 
> This is a sentence with a term in the index: cat\index{cat}. This 
> sentence also has an indexed term, dog\index{dog}, as well as a 
> footnote.\footnote{The footnote also contains an indexed term, 
> mouse.\fnindex{mouse}}
> 
> \page
> 
> \placeregister [index]
> 
> \stoptext
> 
> And about a year ago, Hans made a different suggestion to my own 
> question; however, I didn't realize then that it was not what I was 
> looking for:
> 
> \starttext
> 
>            Test1: \index{cat}cat.
> \footnote{Test2: \index{mouse}mouse.}
> \footnote[note:cat]{Test3: \index[cat]{cat in \in{note}[note:cat]}cat.}
> 
> \page
> 
> \placeregister [index]
> \stoptext
> 
> This creates two index entries for cat, which is not the intended result.
> 
> My questions are:
> 
> 1. I would like to have the footnote number appear in the index, so it 
> says something like "cat 1 n. 1." Is that possible?
> 
> 2. Is it necessary to define an extra command for index entries in 
> footnotes? Is context clever enough to know that it's processing a 
> footnote, so one could write a condition such as (pseudocode):
> 
> \define [1]
>    \myindex
>    {\infinfootnoteelse
>      {\index[Footnote]->{#1}}
>      {\index{#1}}}
> 
> Thanks a lot, have a good Sunday!
You probably know intuitively that there is an answer, don't you?

\unexpanded\def\doifelseinnote
   {\ifconditional\processingnote
      \expandafter\firstoftwoarguments
    \else
      \expandafter\secondoftwoarguments
    \fi}

Hans

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