Adam Reviczky via ntg-context schrieb am 25.08.2021 um 02:02:
> Hi,
>
> I have asked this question before, but now I cannot get it working again.
> https://ntg-context.ntg.narkive.com/lvvdNOQz/the-appendices-envrionment-and-title-in-toc
>
> I want to set partlabels in my TOC but not in the document itself.
>
> The desired output would be:
> ---
> Contents
> Chapter 1 Bodypart
> Appendix A Appendix
>
> 1 Bodypart
> A Appendix
> ---
>
> [...]
>
> But that does not show the labels in the TOC (trying it with LMTX and MKIV).

The easy way is to create a new heading for the appendices (e.g.
\extrachapter) and set the label you want to use in the list.

        \setuplist [chapter]      [label=chapter]
        \setuplist [extrachapter] [label=appendix]


A complexer solution where you can keep \chapter in the appendices can
be achieved with a customized number type and the use of the processor
mechanism to set the labels in the list entries.

\setuplist
   [chapter]
   [width=fit,
    distance=\spaceamount]

\defineconversionset [bodypart:chapternumber] [] [bodypartnumber->n]
\defineconversionset [appendix:chapternumber] [] [appendixnumber->A]

\setuphead
   [chapter]
   [sectionconversionset=chapternumber]

\startsectionblockenvironment [frontpart]

     \defineprocessor [bodypartnumber] [left=Chapter~]
     \defineprocessor [appendixnumber] [left=Appendix~]

\stopsectionblockenvironment

\starttext

\startfrontmatter
\completecontent
\stopfrontmatter

\startbodymatter
\chapter{Bodypart}
\stopbodymatter

\startappendices
\chapter{Appendix}
\stopappendices

\stoptext

Wolfgang