On 2017-04-26 09:18, Florian Grammel wrote:
> Back in april 2012 Robert Blackstone asked some questions about indexing
> http://www.mail-archive.com/ntg-context@ntg.nl/msg63134.html
> i.a.:
>
>> For a book in the area of musicology I would like to make one register with
>> entries of different kinds, distinguishable by their appearance in the
>> register (or index or whatever).
>> The index entries will mostly be authors, including composers, musical terms
>> and musical compositions. The titles of the compositions and the foreign words
>> are set in italic characters throughout in the text of the book.
>> What I would like is to be able to distinguish all entries according to whether
>> they are treated in the text, are shown in a musical example, or are mentioned
>> only in a foot- or endnote.
>>
>> In many books page numbers indicating illustrations are set in italics.
>> Pagenumbers indicating foot- or endnotes often have a suffix "n".
>>
> His other question were resolved, but this one remained unanswered, apart from that two other users also wanted to do exactly the same thing.
>
> I would like to do something very similar and was wondering: Has this been addressed/solved since then?
>
>
Perhaps the following can help. It has separate user page numbers for 
the main matter and back matter, with a suffixed ‘n’ for the items 
indexed from backmatter pages, but no suffix on the backmatter page 
numbers. The index entries for figures are rubricated and have a leading 
‘f’.

    \defineprocessor [backpart] [style=slanted,right=n]
    \defineprocessor [Figure] [style=\tf,color=red,left=f]
    \defineconversionset [backpart:pagenumber][][backpart->o]
    \setupuserpagenumber[way=byblock]
    \setuppagenumbering [location=none]
    \setupheadertexts[{\convertedcounter[userpage][numberconversionset=number]}]
    \setupnote[footnote][location=none]
    \useMPlibrary[dum]
    \starttext
    \startbodymatter
    \startchapter[title=A chapter]
       \index{aaa}This is in the main body.\footnote{\index{bbb}This is
    a footnote.}
    \stopchapter
    \startchapter[title={Another chapter}]
       \index{aaa}This is in the main body.\footnote{\index{bbb}This is
    a footnote.}
       \startplacefigure[location=default,
           title={Body illustration\index[Figure->]{ccc}}]
         \externalfigure[dummy][]
       \stopplacefigure
    \stopchapter
    \stopbodymatter
    \page
    \startbackmatter
    \startchapter[title=An appendix]
       This is in the backmatter.\index{aaa}\footnote{\index{bbb}This is
    a footnote.}
       \startplacefigure[location=default,
           title={Appendix illustration\index[Figure->]{ddd}}]
         \externalfigure[dummy][]
       \stopplacefigure
    \stopchapter
    \startchapter[title=Notes]
       \placenotes[footnote]
    \stopchapter
    \startchapter[title=Index]
       \placeregister[index]
    \stopchapter
    \stopbackmatter
    \stoptext


-- 
Rik